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2018-08-13Merge branch 'smp-hotplug-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull CPU hotplug update from Thomas Gleixner: "A trivial name fix for the hotplug state machine" * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpu/hotplug: Clarify CPU hotplug step name for timers
2018-08-13net/mlx5e: Ethtool steering flow parsing refactoringSaeed Mahameed
Have a parsing function per flow type, that converts from ethtool rx flow spec to mlx5 flow spec. Will be useful to add support for ip6 ethtool flow steering in the next patch. Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-08-13net/mlx5e: Ethtool steering flow validation refactoringSaeed Mahameed
Have a ethtool rx flow spec validation helper function per flow type. Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-08-13remoteproc/davinci: Mark error recovery as disabledSuman Anna
The Davinci remoteproc driver does not support error recovery at present, so mark the corresponding remoteproc flag appropriately so that the debugfs flag shows the value as 'disabled' by default. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2018-08-13ide: mark expected switch fall-throughsGustavo A. R. Silva
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-13ide-tape: remove redundant variable buffer_sizeColin Ian King
Variable buffer_size is being assigned but is never used hence it is redundant and can be removed. Cleans up clang warning: warning: variable 'buffer_size' set but not used [-Wunused-but-set-variable] Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-13ide: remove redundant variables queue_run_ms and leftColin Ian King
Variable queue_run_ms is not being used and is redundant and hence can be removed. Removing this also means that variable left can also be removed. Cleans up clang warning: warning: variable ‘queue_run_ms’ set but not used [-Wunused-but-set-variable] Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-13perf tools: Fix check-headers.sh AND list path of executionAlexander Kapshuk
The '||' path of execution in the 'test' block of the check_2() function may also be taken if file2 does not exist, in which case the warning message about the ABI headers being different would still be printed where it should not be. See below. % file1=file1; file2=file2 % cmd="echo diff $file1 $file2" % test -f $file2 && \ eval $cmd || echo "Warning: Kernel ABI header at 'tools/$file1' differs from latest version at '$file2'" >&2 Warning: Kernel ABI header at 'tools/file1' differs from latest version at 'file2' The proposed patch converts the code following the '&&' operator into a compound list to be executed in the current process environment only if file2 does exist. Should the files being compared differ, a diff command to compare the files concerned is printed on standard output. E.g. $ diff -u tools/arch/x86/lib/memcpy_64.S arch/x86/lib/memcpy_64.S Committer testing: Remove a line from that tools/arch/x86/lib/memcpy_64.S file to test this: BUILD: Doing 'make -j4' parallel build Warning: Kernel ABI header at 'tools/arch/x86/lib/memcpy_64.S' differs from latest version at 'arch/x86/lib/memcpy_64.S' diff -u tools/arch/x86/lib/memcpy_64.S arch/x86/lib/memcpy_64.S CC /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o Signed-off-by: Alexander Kapshuk <alexander.kapshuk@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180811083915.17471-1-alexander.kapshuk@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13net: sched: act_ife: disable bh when taking ife_mod_lockVlad Buslov
Lockdep reports deadlock for following locking scenario in ife action: Task one: 1) Executes ife action update. 2) Takes tcfa_lock. 3) Waits on ife_mod_lock which is already taken by task two. Task two: 1) Executes any path that obtains ife_mod_lock without disabling bh (any path that takes ife_mod_lock while holding tcfa_lock has bh disabled) like loading a meta module, or creating new action. 2) Takes ife_mod_lock. 3) Task is preempted by rate estimator timer. 4) Timer callback waits on tcfa_lock which is taken by task one. In described case tasks deadlock because they take same two locks in different order. To prevent potential deadlock reported by lockdep, always disable bh when obtaining ife_mod_lock. Lockdep warning: [ 508.101192] ===================================================== [ 508.107708] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 508.114728] 4.18.0-rc8+ #646 Not tainted [ 508.119050] ----------------------------------------------------- [ 508.125559] tc/5460 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 508.132025] 000000005a938c68 (ife_mod_lock){++++}, at: find_ife_oplist+0x1e/0xc0 [act_ife] [ 508.140996] and this task is already holding: [ 508.147548] 00000000d46f6c56 (&(&p->tcfa_lock)->rlock){+.-.}, at: tcf_ife_init+0x6ae/0xf40 [act_ife] [ 508.157371] which would create a new lock dependency: [ 508.162828] (&(&p->tcfa_lock)->rlock){+.-.} -> (ife_mod_lock){++++} [ 508.169572] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 508.178197] (&(&p->tcfa_lock)->rlock){+.-.} [ 508.178201] ... which became SOFTIRQ-irq-safe at: [ 508.189771] _raw_spin_lock+0x2c/0x40 [ 508.193906] est_fetch_counters+0x41/0xb0 [ 508.198391] est_timer+0x83/0x3c0 [ 508.202180] call_timer_fn+0x16a/0x5d0 [ 508.206400] run_timer_softirq+0x399/0x920 [ 508.210967] __do_softirq+0x157/0x97d [ 508.215102] irq_exit+0x152/0x1c0 [ 508.218888] smp_apic_timer_interrupt+0xc0/0x4e0 [ 508.223976] apic_timer_interrupt+0xf/0x20 [ 508.228540] cpuidle_enter_state+0xf8/0x5d0 [ 508.233198] do_idle+0x28a/0x350 [ 508.236881] cpu_startup_entry+0xc7/0xe0 [ 508.241296] start_secondary+0x2e8/0x3f0 [ 508.245678] secondary_startup_64+0xa5/0xb0 [ 508.250347] to a SOFTIRQ-irq-unsafe lock: (ife_mod_lock){++++} [ 508.256531] ... which became SOFTIRQ-irq-unsafe at: [ 508.267279] ... [ 508.267283] _raw_write_lock+0x2c/0x40 [ 508.273653] register_ife_op+0x118/0x2c0 [act_ife] [ 508.278926] do_one_initcall+0xf7/0x4d9 [ 508.283214] do_init_module+0x18b/0x44e [ 508.287521] load_module+0x4167/0x5730 [ 508.291739] __do_sys_finit_module+0x16d/0x1a0 [ 508.296654] do_syscall_64+0x7a/0x3f0 [ 508.300788] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 508.306302] other info that might help us debug this: [ 508.315286] Possible interrupt unsafe locking scenario: [ 508.322771] CPU0 CPU1 [ 508.327681] ---- ---- [ 508.332604] lock(ife_mod_lock); [ 508.336300] local_irq_disable(); [ 508.342608] lock(&(&p->tcfa_lock)->rlock); [ 508.349793] lock(ife_mod_lock); [ 508.355990] <Interrupt> [ 508.358974] lock(&(&p->tcfa_lock)->rlock); [ 508.363803] *** DEADLOCK *** [ 508.370715] 2 locks held by tc/5460: [ 508.374680] #0: 00000000e27e4fa4 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x583/0x7b0 [ 508.383366] #1: 00000000d46f6c56 (&(&p->tcfa_lock)->rlock){+.-.}, at: tcf_ife_init+0x6ae/0xf40 [act_ife] [ 508.393648] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 508.403505] -> (&(&p->tcfa_lock)->rlock){+.-.} ops: 1001553 { [ 508.409646] HARDIRQ-ON-W at: [ 508.413136] _raw_spin_lock_bh+0x34/0x40 [ 508.419059] gnet_stats_start_copy_compat+0xa2/0x230 [ 508.426021] gnet_stats_start_copy+0x16/0x20 [ 508.432333] tcf_action_copy_stats+0x95/0x1d0 [ 508.438735] tcf_action_dump_1+0xb0/0x4e0 [ 508.444795] tcf_action_dump+0xca/0x200 [ 508.450673] tcf_exts_dump+0xd9/0x320 [ 508.456392] fl_dump+0x1b7/0x4a0 [cls_flower] [ 508.462798] tcf_fill_node+0x380/0x530 [ 508.468601] tfilter_notify+0xdf/0x1c0 [ 508.474404] tc_new_tfilter+0x84a/0xc90 [ 508.480270] rtnetlink_rcv_msg+0x5bd/0x7b0 [ 508.486419] netlink_rcv_skb+0x184/0x220 [ 508.492394] netlink_unicast+0x31b/0x460 [ 508.507411] netlink_sendmsg+0x3fb/0x840 [ 508.513390] sock_sendmsg+0x7b/0xd0 [ 508.518907] ___sys_sendmsg+0x4c6/0x610 [ 508.524797] __sys_sendmsg+0xd7/0x150 [ 508.530510] do_syscall_64+0x7a/0x3f0 [ 508.536201] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 508.543301] IN-SOFTIRQ-W at: [ 508.546834] _raw_spin_lock+0x2c/0x40 [ 508.552522] est_fetch_counters+0x41/0xb0 [ 508.558571] est_timer+0x83/0x3c0 [ 508.563912] call_timer_fn+0x16a/0x5d0 [ 508.569699] run_timer_softirq+0x399/0x920 [ 508.575840] __do_softirq+0x157/0x97d [ 508.581538] irq_exit+0x152/0x1c0 [ 508.586882] smp_apic_timer_interrupt+0xc0/0x4e0 [ 508.593533] apic_timer_interrupt+0xf/0x20 [ 508.599686] cpuidle_enter_state+0xf8/0x5d0 [ 508.605895] do_idle+0x28a/0x350 [ 508.611147] cpu_startup_entry+0xc7/0xe0 [ 508.617097] start_secondary+0x2e8/0x3f0 [ 508.623029] secondary_startup_64+0xa5/0xb0 [ 508.629245] INITIAL USE at: [ 508.632686] _raw_spin_lock_bh+0x34/0x40 [ 508.638557] gnet_stats_start_copy_compat+0xa2/0x230 [ 508.645491] gnet_stats_start_copy+0x16/0x20 [ 508.651719] tcf_action_copy_stats+0x95/0x1d0 [ 508.657992] tcf_action_dump_1+0xb0/0x4e0 [ 508.663937] tcf_action_dump+0xca/0x200 [ 508.669716] tcf_exts_dump+0xd9/0x320 [ 508.675337] fl_dump+0x1b7/0x4a0 [cls_flower] [ 508.681650] tcf_fill_node+0x380/0x530 [ 508.687366] tfilter_notify+0xdf/0x1c0 [ 508.693031] tc_new_tfilter+0x84a/0xc90 [ 508.698820] rtnetlink_rcv_msg+0x5bd/0x7b0 [ 508.704869] netlink_rcv_skb+0x184/0x220 [ 508.710758] netlink_unicast+0x31b/0x460 [ 508.716627] netlink_sendmsg+0x3fb/0x840 [ 508.722510] sock_sendmsg+0x7b/0xd0 [ 508.727931] ___sys_sendmsg+0x4c6/0x610 [ 508.733729] __sys_sendmsg+0xd7/0x150 [ 508.739346] do_syscall_64 +0x7a/0x3f0 [ 508.744943] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 508.751930] } [ 508.753964] ... key at: [<ffffffff916b3e20>] __key.61145+0x0/0x40 [ 508.760946] ... acquired at: [ 508.764294] _raw_read_lock+0x2f/0x40 [ 508.768513] find_ife_oplist+0x1e/0xc0 [act_ife] [ 508.773692] tcf_ife_init+0x82f/0xf40 [act_ife] [ 508.778785] tcf_action_init_1+0x510/0x750 [ 508.783468] tcf_action_init+0x1e8/0x340 [ 508.787938] tcf_action_add+0xc5/0x240 [ 508.792241] tc_ctl_action+0x203/0x2a0 [ 508.796550] rtnetlink_rcv_msg+0x5bd/0x7b0 [ 508.801200] netlink_rcv_skb+0x184/0x220 [ 508.805674] netlink_unicast+0x31b/0x460 [ 508.810129] netlink_sendmsg+0x3fb/0x840 [ 508.814611] sock_sendmsg+0x7b/0xd0 [ 508.818665] ___sys_sendmsg+0x4c6/0x610 [ 508.823029] __sys_sendmsg+0xd7/0x150 [ 508.827246] do_syscall_64+0x7a/0x3f0 [ 508.831483] entry_SYSCALL_64_after_hwframe+0x49/0xbe the dependencies between the lock to be acquired [ 508.838945] and SOFTIRQ-irq-unsafe lock: [ 508.851177] -> (ife_mod_lock){++++} ops: 95 { [ 508.855920] HARDIRQ-ON-W at: [ 508.859478] _raw_write_lock+0x2c/0x40 [ 508.865264] register_ife_op+0x118/0x2c0 [act_ife] [ 508.872071] do_one_initcall+0xf7/0x4d9 [ 508.877947] do_init_module+0x18b/0x44e [ 508.883819] load_module+0x4167/0x5730 [ 508.889595] __do_sys_finit_module+0x16d/0x1a0 [ 508.896043] do_syscall_64+0x7a/0x3f0 [ 508.901734] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 508.908827] HARDIRQ-ON-R at: [ 508.912359] _raw_read_lock+0x2f/0x40 [ 508.918043] find_ife_oplist+0x1e/0xc0 [act_ife] [ 508.924692] tcf_ife_init+0x82f/0xf40 [act_ife] [ 508.931252] tcf_action_init_1+0x510/0x750 [ 508.937393] tcf_action_init+0x1e8/0x340 [ 508.943366] tcf_action_add+0xc5/0x240 [ 508.949130] tc_ctl_action+0x203/0x2a0 [ 508.954922] rtnetlink_rcv_msg+0x5bd/0x7b0 [ 508.961024] netlink_rcv_skb+0x184/0x220 [ 508.966970] netlink_unicast+0x31b/0x460 [ 508.972915] netlink_sendmsg+0x3fb/0x840 [ 508.978859] sock_sendmsg+0x7b/0xd0 [ 508.984400] ___sys_sendmsg+0x4c6/0x610 [ 508.990264] __sys_sendmsg+0xd7/0x150 [ 508.995952] do_syscall_64+0x7a/0x3f0 [ 509.001643] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 509.008722] SOFTIRQ-ON-W at:\ [ 509.012242] _raw_write_lock+0x2c/0x40 [ 509.018013] register_ife_op+0x118/0x2c0 [act_ife] [ 509.024841] do_one_initcall+0xf7/0x4d9 [ 509.030720] do_init_module+0x18b/0x44e [ 509.036604] load_module+0x4167/0x5730 [ 509.042397] __do_sys_finit_module+0x16d/0x1a0 [ 509.048865] do_syscall_64+0x7a/0x3f0 [ 509.054551] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 509.061636] SOFTIRQ-ON-R at: [ 509.065145] _raw_read_lock+0x2f/0x40 [ 509.070854] find_ife_oplist+0x1e/0xc0 [act_ife] [ 509.077515] tcf_ife_init+0x82f/0xf40 [act_ife] [ 509.084051] tcf_action_init_1+0x510/0x750 [ 509.090172] tcf_action_init+0x1e8/0x340 [ 509.096124] tcf_action_add+0xc5/0x240 [ 509.101891] tc_ctl_action+0x203/0x2a0 [ 509.107671] rtnetlink_rcv_msg+0x5bd/0x7b0 [ 509.113811] netlink_rcv_skb+0x184/0x220 [ 509.119768] netlink_unicast+0x31b/0x460 [ 509.125716] netlink_sendmsg+0x3fb/0x840 [ 509.131668] sock_sendmsg+0x7b/0xd0 [ 509.137167] ___sys_sendmsg+0x4c6/0x610 [ 509.143010] __sys_sendmsg+0xd7/0x150 [ 509.148718] do_syscall_64+0x7a/0x3f0 [ 509.154443] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 509.161533] INITIAL USE at: [ 509.164956] _raw_read_lock+0x2f/0x40 [ 509.170574] find_ife_oplist+0x1e/0xc0 [act_ife] [ 509.177134] tcf_ife_init+0x82f/0xf40 [act_ife] [ 509.183619] tcf_action_init_1+0x510/0x750 [ 509.189674] tcf_action_init+0x1e8/0x340 [ 509.195534] tcf_action_add+0xc5/0x240 [ 509.201229] tc_ctl_action+0x203/0x2a0 [ 509.206920] rtnetlink_rcv_msg+0x5bd/0x7b0 [ 509.212936] netlink_rcv_skb+0x184/0x220 [ 509.218818] netlink_unicast+0x31b/0x460 [ 509.224699] netlink_sendmsg+0x3fb/0x840 [ 509.230581] sock_sendmsg+0x7b/0xd0 [ 509.235984] ___sys_sendmsg+0x4c6/0x610 [ 509.241791] __sys_sendmsg+0xd7/0x150 [ 509.247425] do_syscall_64+0x7a/0x3f0 [ 509.253007] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 509.259975] } [ 509.261998] ... key at: [<ffffffffc1554258>] ife_mod_lock+0x18/0xffffffffffff8dc0 [act_ife] [ 509.271569] ... acquired at: [ 509.274912] _raw_read_lock+0x2f/0x40 [ 509.279134] find_ife_oplist+0x1e/0xc0 [act_ife] [ 509.284324] tcf_ife_init+0x82f/0xf40 [act_ife] [ 509.289425] tcf_action_init_1+0x510/0x750 [ 509.294068] tcf_action_init+0x1e8/0x340 [ 509.298553] tcf_action_add+0xc5/0x240 [ 509.302854] tc_ctl_action+0x203/0x2a0 [ 509.307153] rtnetlink_rcv_msg+0x5bd/0x7b0 [ 509.311805] netlink_rcv_skb+0x184/0x220 [ 509.316282] netlink_unicast+0x31b/0x460 [ 509.320769] netlink_sendmsg+0x3fb/0x840 [ 509.325248] sock_sendmsg+0x7b/0xd0 [ 509.329290] ___sys_sendmsg+0x4c6/0x610 [ 509.333687] __sys_sendmsg+0xd7/0x150 [ 509.337902] do_syscall_64+0x7a/0x3f0 [ 509.342116] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 509.349601] stack backtrace: [ 509.354663] CPU: 6 PID: 5460 Comm: tc Not tainted 4.18.0-rc8+ #646 [ 509.361216] Hardware name: Supermicro SYS-2028TP-DECR/X10DRT-P, BIOS 2.0b 03/30/2017 Fixes: ef6980b6becb ("introduce IFE action") Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-13perf tools: Check for null when copying nsinfo.Benno Evers
The argument to nsinfo__copy() was assumed to be valid, but some code paths exist that will lead to NULL being passed. In particular, running 'perf script -D' on a perf.data file containing an PERF_RECORD_MMAP event associating the '[vdso]' dso with pid 0 earlier in the event stream will lead to a segfault. Since all calling code is already checking for a non-null return value, just return NULL for this case as well. Signed-off-by: Benno Evers <bevers@mesosphere.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Krister Johansen <kjlx@templeofstupid.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180810133614.9925-1-bevers@mesosphere.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13Merge branch 'for-upstream' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next Johan Hedberg says: ==================== pull request: bluetooth-next 2018-08-13 There was one pretty bad bug that slipped into the MediaTek HCI driver in the last bluetooth-next pull request. Would it be possible to get this one-liner fix pulled to net-next before you make your first 4.19 pull request for Linus? Thanks. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-13tools lib traceevent: Rename static variables and functions in event-parse.cTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes static variables and functions in event-parse.c: pevent_func_params, __pevent_parse_format, __pevent_parse_event, pevent_error_str, pevent_search_event Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180703.575392642@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent: Rename various pevent APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_reset_function_resolver, pevent_strerror, pevent_list_events, pevent_event_common_fields, pevent_event_fields, pevent_ref, pevent_unref Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180703.426198047@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent: Rename internal parser related APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_buffer_init, pevent_read_token, pevent_free_token, pevent_peek_char, pevent_get_input_buf, pevent_get_input_buf_ptr Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180703.275281085@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent: Rename various pevent get/set/is APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_pid_is_registered, pevent_get_cpus, pevent_set_cpus, pevent_is_file_bigendian, pevent_is_host_bigendian, pevent_is_latency_format, pevent_set_latency_format Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180703.114110715@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent: Rename pevent_find_* APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_find_function, pevent_find_function_address, pevent_find_event_by_name, pevent_find_event_by_record Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180702.966965051@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent: Rename pevent field APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_free_format, pevent_free_format_field, pevent_get_field_raw, pevent_get_field_val, pevent_get_common_field_val, pevent_get_any_field_val Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180702.821244942@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent: Rename pevent_data_ APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_data_lat_fmt, pevent_data_type, pevent_data_event_from_type, pevent_data_pid, pevent_data_preempt_count, pevent_data_flags, pevent_data_comm_from_pid, pevent_data_pid_from_comm, pevent_cmdline_pid Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180702.678020020@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent: Rename pevent_register / unregister APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_register_print_function, pevent_unregister_print_function, pevent_register_event_handler, pevent_unregister_event_handler, pevent_register_function, pevent_register_trace_clock Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180702.524813185@goodmis.org Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent: Rename pevent_filter* APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: PEVENT_FILTER_ERROR_BUFSZ, pevent_filter_alloc, pevent_filter_add_filter_str, pevent_filter_match, pevent_filter_strerror, pevent_event_filtered, pevent_filter_reset, pevent_filter_clear_trivial, pevent_filter_free, pevent_filter_make_string, pevent_filter_remove_event, pevent_filter_event_has_trivial, pevent_filter_copy, pevent_update_trivial, pevent_filter_compare Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180702.370659353@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent, perf tools: Rename traceevent_plugin_* APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "traceevent_". This changes APIs: traceevent_plugin_list_options, traceevent_plugin_free_options_list, traceevent_plugin_add_options, traceevent_plugin_remove_options, traceevent_print_plugins Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180702.089951638@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13Merge branch 'sched-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler updates from Thomas Gleixner: - Cleanup and improvement of NUMA balancing - Refactoring and improvements to the PELT (Per Entity Load Tracking) code - Watchdog simplification and related cleanups - The usual pile of small incremental fixes and improvements * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits) watchdog: Reduce message verbosity stop_machine: Reflow cpu_stop_queue_two_works() sched/numa: Move task_numa_placement() closer to numa_migrate_preferred() sched/numa: Use group_weights to identify if migration degrades locality sched/numa: Update the scan period without holding the numa_group lock sched/numa: Remove numa_has_capacity() sched/numa: Modify migrate_swap() to accept additional parameters sched/numa: Remove unused task_capacity from 'struct numa_stats' sched/numa: Skip nodes that are at 'hoplimit' sched/debug: Reverse the order of printing faults sched/numa: Use task faults only if numa_group is not yet set up sched/numa: Set preferred_node based on best_cpu sched/numa: Simplify load_too_imbalanced() sched/numa: Evaluate move once per node sched/numa: Remove redundant field sched/debug: Show the sum wait time of a task group sched/fair: Remove #ifdefs from scale_rt_capacity() sched/core: Remove get_cpu() from sched_fork() sched/cpufreq: Clarify sugov_get_util() sched/sysctl: Remove unused sched_time_avg_ms sysctl ...
2018-08-13tools lib traceevent: Rename pevent_function* APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_function_handler, pevent_func_handler, pevent_func_arg_type, PEVENT_FUNC_ARG_VOID, PEVENT_FUNC_ARG_INT, PEVENT_FUNC_ARG_LONG, PEVENT_FUNC_ARG_STRING, PEVENT_FUNC_ARG_PTRS, PEVENT_FUNC_ARG_MAX_TYPES Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180701.935881193@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent, tools lib lockdep: Rename 'enum pevent_errno' to 'enum ↵Tzvetomir Stoyanov (VMware)
tep_errno' In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes 'enum pevent_errno' to 'enum tep_errno'. Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180701.770475059@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent, perf tools: Rename 'enum pevent_flag' to 'enum tep_flag'Tzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes pevent_get_page_size API and enum pevent_flag to enum tep_flag Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180701.623942406@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent, perf tools: Rename traceevent_* APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "traceevent_". This changes APIs: traceevent_host_bigendian, traceevent_load_plugins and traceevent_unload_plugins Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180701.484691639@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent, perf tools: Rename pevent_set_* APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_set_file_bigendian, pevent_set_flag, pevent_set_function_resolver, pevent_set_host_bigendian, pevent_set_long_size, pevent_set_page_size and pevent_get_long_size Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180701.256265951@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent, perf tools: Rename pevent_register_* APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_register_comm, pevent_register_print_string Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180700.948980691@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent, perf tools: Rename pevent_read_number_* APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_read_number, pevent_read_number_field Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180700.804271434@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent, perf tools: Rename pevent print APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_print_field, pevent_print_fields, pevent_print_funcs, pevent_print_printk Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180700.654453763@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent, perf tools: Rename pevent parse APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_parse_event, pevent_parse_format, pevent_parse_header_page Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180700.469749700@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent, perf tools: Rename pevent find APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_find_any_field, pevent_find_common_field, pevent_find_event, pevent_find_field Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180700.316995920@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent, perf tools: Rename pevent alloc / free APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_alloc, pevent_free, pevent_event_info and pevent_func_resolver_t Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180700.152609945@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13tools lib traceevent, perf tools: Rename pevent plugin related APIsTzvetomir Stoyanov (VMware)
In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes the pevent plugin related API. Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180700.005287044@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13Merge branch 'sched-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fix from Thomas Gleixner: "A single bugfix to prevent a pinned thread which queues stomp machine work to be preempted by the stopper thread on its CPU which causes a live lock as it is unable to wake the second CPUs stopper thread" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: stop_machine: Atomically queue and wake stopper threads
2018-08-13tools lib traceevent, perf tools: Rename 'struct pevent_record' to 'struct ↵Tzvetomir Stoyanov (VMware)
tep_record' In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes the 'struct pevent_record' to 'struct tep_record'. Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yordan Karadzhov (VMware) <y.karadz@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180659.866021298@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-13Merge branch 'ras-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 RAS updates from Thomas Gleixner: "A small set of changes to the RAS core: - Rework of the MCE bank scanning code - Y2038 converion" * 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mce: Cleanup __mc_scan_banks() x86/mce: Carve out bank scanning code x86/mce: Remove !banks check x86/mce: Carve out the crashing_cpu check x86/mce: Always use 64-bit timestamps
2018-08-13Merge branch 'core-rcu-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull RCU updates from Thomas Gleixner: "A large update to RCU: Preparatory work for consolidating the RCU flavors: - Introduce grace-period sequence numbers to the RCU-bh, RCU-preempt, and RCU-sched flavors, replacing the old ->gpnum and ->completed pair of fields. This change allows lockless code to obtain the complete grace-period state with a single READ_ONCE(), which is needed to maintain tolerable lock contention during the upcoming consolidation of the three RCU flavors. Note that grace-period sequence numbers are already used by rcu_barrier(), expedited RCU grace periods, and SRCU, and are thus already heavily used and well-tested. Joel Fernandes contributed a number of excellent fixes and improvements. - Clean up some grace-period-reporting loose ends, including improving the handling of quiescent states from offline CPUs and fixing some false-positive WARN_ON_ONCE() invocations. (Strictly speaking, the WARN_ON_ONCE() invocations were quite correct, but their invariants were (harmlessly) violated by the earlier sloppy handling of quiescent states from offline CPUs.) In addition, improve grace-period forward-progress guarantees so as to allow removal of fail-safe checks that required otherwise needless lock acquisitions. Finally, add more diagnostics to help debug the upcoming consolidation of the RCU-bh, RCU-preempt, and RCU-sched flavors. The rest: - SRCU updates - Updates to rcutorture and associated scripting. - The usual pile of miscellaneous fixes" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (118 commits) rcutorture: Fix rcu_barrier successes counter rcutorture: Add support to detect if boost kthread prio is too low rcutorture: Use monotonic timestamp for stall detection rcutorture: Make boost test more robust rcutorture: Disable RT throttling for boost tests rcutorture: Emphasize testing of single reader protection type rcutorture: Handle extended read-side critical sections rcutorture: Make rcu_torture_timer() use rcu_torture_one_read() rcutorture: Use per-CPU random state for rcu_torture_timer() rcutorture: Use atomic increment for n_rcu_torture_timers rcutorture: Extract common code from rcu_torture_reader() rcuperf: Remove unused torturing_tasks() function rcu: Remove rcutorture test version and sequence number rcutorture: Change units of onoff_interval to jiffies rcu: Assign higher prio to RCU threads if rcutorture is built-in rculist: Improve documentation for list_for_each_entry_from_rcu() srcu: Add grace-period number to rcutorture statistics printout rcu: Print stall-warning NMI dyntick state in hexadecimal MAINTAINERS: Update RCU, SRCU, and TORTURE-TEST entries rcu: Make rcu_seq_diff() more exact ...
2018-08-13f2fs: support fault_type mount optionChao Yu
Previously, once fault injection is on, by default, all kind of faults will be injected to f2fs, if we want to trigger single or specified combined type during the test, we need to configure sysfs entry, it will be a little inconvenient to integrate sysfs configuring into testsuit, such as xfstest. So this patch introduces a new mount option 'fault_type' to assist old option 'fault_injection', with these two mount options, we can specify any fault rate/type at mount-time. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-08-13f2fs: fix to return success when trimming meta areaChao Yu
generic/251 --- tests/generic/251.out 2016-05-03 20:20:11.381899000 +0800 QA output created by 251 Running the test: done. +fstrim: /mnt/scratch_f2fs: FITRIM ioctl failed: Invalid argument +fstrim: /mnt/scratch_f2fs: FITRIM ioctl failed: Invalid argument +fstrim: /mnt/scratch_f2fs: FITRIM ioctl failed: Invalid argument +fstrim: /mnt/scratch_f2fs: FITRIM ioctl failed: Invalid argument +fstrim: /mnt/scratch_f2fs: FITRIM ioctl failed: Invalid argument ... Ran: generic/251 Failures: generic/251 The reason is coverage of fstrim locates in meta area, previously we just return -EINVAL for such case, making generic/251 failed, to fix this problem, let's relieve restriction to return success with no block discarded. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-08-13f2fs: fix use-after-free of dicard command entryChao Yu
As Dan Carpenter reported: The patch 20ee4382322c: "f2fs: issue small discard by LBA order" from Jul 8, 2018, leads to the following Smatch warning: fs/f2fs/segment.c:1277 __issue_discard_cmd_orderly() warn: 'dc' was already freed. See also: fs/f2fs/segment.c:2550 __issue_discard_cmd_range() warn: 'dc' was already freed. In order to fix this issue, let's get error from __submit_discard_cmd(), and release current discard command after we referenced next one. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-08-13f2fs: support discard submission error injectionChao Yu
This patch adds to support discard submission error injection for testing error handling of __submit_discard_cmd(). Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-08-13f2fs: split discard command in prior to block layerChao Yu
Some devices has small max_{hw,}discard_sectors, so that in __blkdev_issue_discard(), one big size discard bio can be split into multiple small size discard bios, result in heavy load in IO scheduler and device, which can hang other sync IO for long time. Now, f2fs is trying to control discard commands more elaboratively, in order to make less conflict in between discard IO and user IO to enhance application's performance, so in this patch, we will split discard bio in f2fs in prior to in block layer to reduce issuing multiple discard bios in a short time. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-08-13f2fs: wake up gc thread immediately when gc_urgent is setSheng Yong
Fixes: 5b0e95398e2b ("f2fs: introduce sbi->gc_mode to determine the policy") Signed-off-by: Sheng Yong <shengyong1@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-08-13f2fs: fix incorrect range->len in f2fs_trim_fs()Chao Yu
generic/260 reported below error: [+] Default length with start set (should succeed) [+] Length beyond the end of fs (should succeed) [+] Length beyond the end of fs with start set (should succeed) +./tests/generic/260: line 94: [: 18446744073709551615: integer expression expected +./tests/generic/260: line 104: [: 18446744073709551615: integer expression expected Test done ... In f2fs_trim_fs(), if there is no discard being trimmed, we need to correct range->len before return. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-08-13f2fs: refresh recent accessed nat entry in lru listChao Yu
Introduce nat_list_lock to protect nm_i->nat_entries list, and manage it as a LRU list, refresh location for therein recent accessed entries in the list. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-08-13f2fs: fix avoid race between truncate and background GCChao Yu
Thread A Background GC - f2fs_setattr isize to 0 - truncate_setsize - gc_data_segment - f2fs_get_read_data_page page #0 - set_page_dirty - set_cold_data - f2fs_truncate - f2fs_setattr isize to 4k - read 4k <--- hit data in cached page #0 Above race condition can cause read out invalid data in a truncated page, fix it by i_gc_rwsem[WRITE] lock. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-08-13f2fs: avoid race between zero_range and background GCChao Yu
Thread A Background GC - f2fs_zero_range - truncate_pagecache_range - gc_data_segment - get_read_data_page - move_data_page - set_page_dirty - set_cold_data - f2fs_do_zero_range - dn->data_blkaddr = NEW_ADDR; - f2fs_set_data_blkaddr Actually, we don't need to set dirty & checked flag on the page, since all valid data in the page should be zeroed by zero_range(). Use i_gc_rwsem[WRITE] to avoid such race condition. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-08-13f2fs: fix to do sanity check with block address in main area v2Chao Yu
This patch adds f2fs_is_valid_blkaddr() in below functions to do sanity check with block address to avoid pentential panic: - f2fs_grab_read_bio() - __written_first_block() https://bugzilla.kernel.org/show_bug.cgi?id=200465 - Reproduce - POC (poc.c) #define _GNU_SOURCE #include <sys/types.h> #include <sys/mount.h> #include <sys/mman.h> #include <sys/stat.h> #include <sys/xattr.h> #include <dirent.h> #include <errno.h> #include <error.h> #include <fcntl.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <linux/falloc.h> #include <linux/loop.h> static void activity(char *mpoint) { char *xattr; int err; err = asprintf(&xattr, "%s/foo/bar/xattr", mpoint); char buf2[113]; memset(buf2, 0, sizeof(buf2)); listxattr(xattr, buf2, sizeof(buf2)); } int main(int argc, char *argv[]) { activity(argv[1]); return 0; } - kernel message [ 844.718738] F2FS-fs (loop0): Mounted with checkpoint version = 2 [ 846.430929] F2FS-fs (loop0): access invalid blkaddr:1024 [ 846.431058] WARNING: CPU: 1 PID: 1249 at fs/f2fs/checkpoint.c:154 f2fs_is_valid_blkaddr+0x10f/0x160 [ 846.431059] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper [ 846.431310] CPU: 1 PID: 1249 Comm: a.out Not tainted 4.18.0-rc3+ #1 [ 846.431312] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 846.431315] RIP: 0010:f2fs_is_valid_blkaddr+0x10f/0x160 [ 846.431316] Code: 00 eb ed 31 c0 83 fa 05 75 ae 48 83 ec 08 48 8b 3f 89 f1 48 c7 c2 fc 0b 0f 8b 48 c7 c6 8b d7 09 8b 88 44 24 07 e8 61 8b ff ff <0f> 0b 0f b6 44 24 07 48 83 c4 08 eb 81 4c 8b 47 10 8b 8f 38 04 00 [ 846.431347] RSP: 0018:ffff961c414a7bc0 EFLAGS: 00010282 [ 846.431349] RAX: 0000000000000000 RBX: ffffc5f787b8ea80 RCX: 0000000000000000 [ 846.431350] RDX: 0000000000000000 RSI: ffff89dfffd165d8 RDI: ffff89dfffd165d8 [ 846.431351] RBP: ffff961c414a7c20 R08: 0000000000000001 R09: 0000000000000248 [ 846.431353] R10: 0000000000000000 R11: 0000000000000248 R12: 0000000000000007 [ 846.431369] R13: ffff89dff5492800 R14: ffff89dfae3aa000 R15: ffff89dff4ff88d0 [ 846.431372] FS: 00007f882e2fb700(0000) GS:ffff89dfffd00000(0000) knlGS:0000000000000000 [ 846.431373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 846.431374] CR2: 0000000001a88008 CR3: 00000001eb572000 CR4: 00000000000006e0 [ 846.431384] Call Trace: [ 846.431426] f2fs_iget+0x6f4/0xe70 [ 846.431430] ? f2fs_find_entry+0x71/0x90 [ 846.431432] f2fs_lookup+0x1aa/0x390 [ 846.431452] __lookup_slow+0x97/0x150 [ 846.431459] lookup_slow+0x35/0x50 [ 846.431462] walk_component+0x1c6/0x470 [ 846.431479] ? memcg_kmem_charge_memcg+0x70/0x90 [ 846.431488] ? page_add_file_rmap+0x13/0x200 [ 846.431491] path_lookupat+0x76/0x230 [ 846.431501] ? __alloc_pages_nodemask+0xfc/0x280 [ 846.431504] filename_lookup+0xb8/0x1a0 [ 846.431534] ? _cond_resched+0x16/0x40 [ 846.431541] ? kmem_cache_alloc+0x160/0x1d0 [ 846.431549] ? path_listxattr+0x41/0xa0 [ 846.431551] path_listxattr+0x41/0xa0 [ 846.431570] do_syscall_64+0x55/0x100 [ 846.431583] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 846.431607] RIP: 0033:0x7f882de1c0d7 [ 846.431607] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48 [ 846.431639] RSP: 002b:00007ffe8e66c238 EFLAGS: 00000202 ORIG_RAX: 00000000000000c2 [ 846.431641] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f882de1c0d7 [ 846.431642] RDX: 0000000000000071 RSI: 00007ffe8e66c280 RDI: 0000000001a880c0 [ 846.431643] RBP: 00007ffe8e66c300 R08: 0000000001a88010 R09: 0000000000000000 [ 846.431645] R10: 00000000000001ab R11: 0000000000000202 R12: 0000000000400550 [ 846.431646] R13: 00007ffe8e66c400 R14: 0000000000000000 R15: 0000000000000000 [ 846.431648] ---[ end trace abca54df39d14f5c ]--- [ 846.431651] F2FS-fs (loop0): invalid blkaddr: 1024, type: 5, run fsck to fix. [ 846.431762] WARNING: CPU: 1 PID: 1249 at fs/f2fs/f2fs.h:2697 f2fs_iget+0xd17/0xe70 [ 846.431763] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper [ 846.431797] CPU: 1 PID: 1249 Comm: a.out Tainted: G W 4.18.0-rc3+ #1 [ 846.431798] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 846.431800] RIP: 0010:f2fs_iget+0xd17/0xe70 [ 846.431801] Code: ff ff 48 63 d8 e9 e1 f6 ff ff 48 8b 45 c8 41 b8 05 00 00 00 48 c7 c2 d8 e8 0e 8b 48 c7 c6 1d b0 0a 8b 48 8b 38 e8 f9 b4 00 00 <0f> 0b 48 8b 45 c8 f0 80 48 48 04 e9 d8 f9 ff ff 0f 0b 48 8b 43 18 [ 846.431832] RSP: 0018:ffff961c414a7bd0 EFLAGS: 00010282 [ 846.431834] RAX: 0000000000000000 RBX: ffffc5f787b8ea80 RCX: 0000000000000006 [ 846.431835] RDX: 0000000000000000 RSI: 0000000000000096 RDI: ffff89dfffd165d0 [ 846.431836] RBP: ffff961c414a7c20 R08: 0000000000000000 R09: 0000000000000273 [ 846.431837] R10: 0000000000000000 R11: ffff89dfad50ca60 R12: 0000000000000007 [ 846.431838] R13: ffff89dff5492800 R14: ffff89dfae3aa000 R15: ffff89dff4ff88d0 [ 846.431840] FS: 00007f882e2fb700(0000) GS:ffff89dfffd00000(0000) knlGS:0000000000000000 [ 846.431841] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 846.431842] CR2: 0000000001a88008 CR3: 00000001eb572000 CR4: 00000000000006e0 [ 846.431846] Call Trace: [ 846.431850] ? f2fs_find_entry+0x71/0x90 [ 846.431853] f2fs_lookup+0x1aa/0x390 [ 846.431856] __lookup_slow+0x97/0x150 [ 846.431858] lookup_slow+0x35/0x50 [ 846.431874] walk_component+0x1c6/0x470 [ 846.431878] ? memcg_kmem_charge_memcg+0x70/0x90 [ 846.431880] ? page_add_file_rmap+0x13/0x200 [ 846.431882] path_lookupat+0x76/0x230 [ 846.431884] ? __alloc_pages_nodemask+0xfc/0x280 [ 846.431886] filename_lookup+0xb8/0x1a0 [ 846.431890] ? _cond_resched+0x16/0x40 [ 846.431891] ? kmem_cache_alloc+0x160/0x1d0 [ 846.431894] ? path_listxattr+0x41/0xa0 [ 846.431896] path_listxattr+0x41/0xa0 [ 846.431898] do_syscall_64+0x55/0x100 [ 846.431901] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 846.431902] RIP: 0033:0x7f882de1c0d7 [ 846.431903] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48 [ 846.431934] RSP: 002b:00007ffe8e66c238 EFLAGS: 00000202 ORIG_RAX: 00000000000000c2 [ 846.431936] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f882de1c0d7 [ 846.431937] RDX: 0000000000000071 RSI: 00007ffe8e66c280 RDI: 0000000001a880c0 [ 846.431939] RBP: 00007ffe8e66c300 R08: 0000000001a88010 R09: 0000000000000000 [ 846.431940] R10: 00000000000001ab R11: 0000000000000202 R12: 0000000000400550 [ 846.431941] R13: 00007ffe8e66c400 R14: 0000000000000000 R15: 0000000000000000 [ 846.431943] ---[ end trace abca54df39d14f5d ]--- [ 846.432033] F2FS-fs (loop0): access invalid blkaddr:1024 [ 846.432051] WARNING: CPU: 1 PID: 1249 at fs/f2fs/checkpoint.c:154 f2fs_is_valid_blkaddr+0x10f/0x160 [ 846.432051] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper [ 846.432085] CPU: 1 PID: 1249 Comm: a.out Tainted: G W 4.18.0-rc3+ #1 [ 846.432086] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 846.432089] RIP: 0010:f2fs_is_valid_blkaddr+0x10f/0x160 [ 846.432089] Code: 00 eb ed 31 c0 83 fa 05 75 ae 48 83 ec 08 48 8b 3f 89 f1 48 c7 c2 fc 0b 0f 8b 48 c7 c6 8b d7 09 8b 88 44 24 07 e8 61 8b ff ff <0f> 0b 0f b6 44 24 07 48 83 c4 08 eb 81 4c 8b 47 10 8b 8f 38 04 00 [ 846.432120] RSP: 0018:ffff961c414a7900 EFLAGS: 00010286 [ 846.432122] RAX: 0000000000000000 RBX: 0000000000000400 RCX: 0000000000000006 [ 846.432123] RDX: 0000000000000000 RSI: 0000000000000096 RDI: ffff89dfffd165d0 [ 846.432124] RBP: ffff89dff5492800 R08: 0000000000000001 R09: 000000000000029d [ 846.432125] R10: ffff961c414a7820 R11: 000000000000029d R12: 0000000000000400 [ 846.432126] R13: 0000000000000000 R14: ffff89dff4ff88d0 R15: 0000000000000000 [ 846.432128] FS: 00007f882e2fb700(0000) GS:ffff89dfffd00000(0000) knlGS:0000000000000000 [ 846.432130] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 846.432131] CR2: 0000000001a88008 CR3: 00000001eb572000 CR4: 00000000000006e0 [ 846.432135] Call Trace: [ 846.432151] f2fs_wait_on_block_writeback+0x20/0x110 [ 846.432158] f2fs_grab_read_bio+0xbc/0xe0 [ 846.432161] f2fs_submit_page_read+0x21/0x280 [ 846.432163] f2fs_get_read_data_page+0xb7/0x3c0 [ 846.432165] f2fs_get_lock_data_page+0x29/0x1e0 [ 846.432167] f2fs_get_new_data_page+0x148/0x550 [ 846.432170] f2fs_add_regular_entry+0x1d2/0x550 [ 846.432178] ? __switch_to+0x12f/0x460 [ 846.432181] f2fs_add_dentry+0x6a/0xd0 [ 846.432184] f2fs_do_add_link+0xe9/0x140 [ 846.432186] __recover_dot_dentries+0x260/0x280 [ 846.432189] f2fs_lookup+0x343/0x390 [ 846.432193] __lookup_slow+0x97/0x150 [ 846.432195] lookup_slow+0x35/0x50 [ 846.432208] walk_component+0x1c6/0x470 [ 846.432212] ? memcg_kmem_charge_memcg+0x70/0x90 [ 846.432215] ? page_add_file_rmap+0x13/0x200 [ 846.432217] path_lookupat+0x76/0x230 [ 846.432219] ? __alloc_pages_nodemask+0xfc/0x280 [ 846.432221] filename_lookup+0xb8/0x1a0 [ 846.432224] ? _cond_resched+0x16/0x40 [ 846.432226] ? kmem_cache_alloc+0x160/0x1d0 [ 846.432228] ? path_listxattr+0x41/0xa0 [ 846.432230] path_listxattr+0x41/0xa0 [ 846.432233] do_syscall_64+0x55/0x100 [ 846.432235] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 846.432237] RIP: 0033:0x7f882de1c0d7 [ 846.432237] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48 [ 846.432269] RSP: 002b:00007ffe8e66c238 EFLAGS: 00000202 ORIG_RAX: 00000000000000c2 [ 846.432271] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f882de1c0d7 [ 846.432272] RDX: 0000000000000071 RSI: 00007ffe8e66c280 RDI: 0000000001a880c0 [ 846.432273] RBP: 00007ffe8e66c300 R08: 0000000001a88010 R09: 0000000000000000 [ 846.432274] R10: 00000000000001ab R11: 0000000000000202 R12: 0000000000400550 [ 846.432275] R13: 00007ffe8e66c400 R14: 0000000000000000 R15: 0000000000000000 [ 846.432277] ---[ end trace abca54df39d14f5e ]--- [ 846.432279] F2FS-fs (loop0): invalid blkaddr: 1024, type: 5, run fsck to fix. [ 846.432376] WARNING: CPU: 1 PID: 1249 at fs/f2fs/f2fs.h:2697 f2fs_wait_on_block_writeback+0xb1/0x110 [ 846.432376] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper [ 846.432410] CPU: 1 PID: 1249 Comm: a.out Tainted: G W 4.18.0-rc3+ #1 [ 846.432411] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 846.432413] RIP: 0010:f2fs_wait_on_block_writeback+0xb1/0x110 [ 846.432414] Code: 66 90 f0 ff 4b 34 74 59 5b 5d c3 48 8b 7d 00 41 b8 05 00 00 00 89 d9 48 c7 c2 d8 e8 0e 8b 48 c7 c6 1d b0 0a 8b e8 df bc fd ff <0f> 0b f0 80 4d 48 04 e9 67 ff ff ff 48 8b 03 48 c1 e8 37 83 e0 07 [ 846.432445] RSP: 0018:ffff961c414a7910 EFLAGS: 00010286 [ 846.432447] RAX: 0000000000000000 RBX: 0000000000000400 RCX: 0000000000000006 [ 846.432448] RDX: 0000000000000000 RSI: 0000000000000092 RDI: ffff89dfffd165d0 [ 846.432449] RBP: ffff89dff5492800 R08: 0000000000000000 R09: 00000000000002d1 [ 846.432450] R10: ffff961c414a7820 R11: ffff89dfad50cf80 R12: 0000000000000400 [ 846.432451] R13: 0000000000000000 R14: ffff89dff4ff88d0 R15: 0000000000000000 [ 846.432453] FS: 00007f882e2fb700(0000) GS:ffff89dfffd00000(0000) knlGS:0000000000000000 [ 846.432454] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 846.432455] CR2: 0000000001a88008 CR3: 00000001eb572000 CR4: 00000000000006e0 [ 846.432459] Call Trace: [ 846.432463] f2fs_grab_read_bio+0xbc/0xe0 [ 846.432464] f2fs_submit_page_read+0x21/0x280 [ 846.432466] f2fs_get_read_data_page+0xb7/0x3c0 [ 846.432468] f2fs_get_lock_data_page+0x29/0x1e0 [ 846.432470] f2fs_get_new_data_page+0x148/0x550 [ 846.432473] f2fs_add_regular_entry+0x1d2/0x550 [ 846.432475] ? __switch_to+0x12f/0x460 [ 846.432477] f2fs_add_dentry+0x6a/0xd0 [ 846.432480] f2fs_do_add_link+0xe9/0x140 [ 846.432483] __recover_dot_dentries+0x260/0x280 [ 846.432485] f2fs_lookup+0x343/0x390 [ 846.432488] __lookup_slow+0x97/0x150 [ 846.432490] lookup_slow+0x35/0x50 [ 846.432505] walk_component+0x1c6/0x470 [ 846.432509] ? memcg_kmem_charge_memcg+0x70/0x90 [ 846.432511] ? page_add_file_rmap+0x13/0x200 [ 846.432513] path_lookupat+0x76/0x230 [ 846.432515] ? __alloc_pages_nodemask+0xfc/0x280 [ 846.432517] filename_lookup+0xb8/0x1a0 [ 846.432520] ? _cond_resched+0x16/0x40 [ 846.432522] ? kmem_cache_alloc+0x160/0x1d0 [ 846.432525] ? path_listxattr+0x41/0xa0 [ 846.432526] path_listxattr+0x41/0xa0 [ 846.432529] do_syscall_64+0x55/0x100 [ 846.432531] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 846.432533] RIP: 0033:0x7f882de1c0d7 [ 846.432533] Code: f0 ff ff 73 01 c3 48 8b 0d be dd 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 c2 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 dd 2b 00 f7 d8 64 89 01 48 [ 846.432565] RSP: 002b:00007ffe8e66c238 EFLAGS: 00000202 ORIG_RAX: 00000000000000c2 [ 846.432567] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f882de1c0d7 [ 846.432568] RDX: 0000000000000071 RSI: 00007ffe8e66c280 RDI: 0000000001a880c0 [ 846.432569] RBP: 00007ffe8e66c300 R08: 0000000001a88010 R09: 0000000000000000 [ 846.432570] R10: 00000000000001ab R11: 0000000000000202 R12: 0000000000400550 [ 846.432571] R13: 00007ffe8e66c400 R14: 0000000000000000 R15: 0000000000000000 [ 846.432573] ---[ end trace abca54df39d14f5f ]--- [ 846.434280] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 [ 846.434424] PGD 80000001ebd3a067 P4D 80000001ebd3a067 PUD 1eb1ae067 PMD 0 [ 846.434551] Oops: 0000 [#1] SMP PTI [ 846.434697] CPU: 0 PID: 44 Comm: kworker/u5:0 Tainted: G W 4.18.0-rc3+ #1 [ 846.434805] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 846.435000] Workqueue: fscrypt_read_queue decrypt_work [ 846.435174] RIP: 0010:fscrypt_do_page_crypto+0x6e/0x2d0 [ 846.435351] Code: 00 65 48 8b 04 25 28 00 00 00 48 89 84 24 88 00 00 00 31 c0 e8 43 c2 e0 ff 49 8b 86 48 02 00 00 85 ed c7 44 24 70 00 00 00 00 <48> 8b 58 08 0f 84 14 02 00 00 48 8b 78 10 48 8b 0c 24 48 c7 84 24 [ 846.435696] RSP: 0018:ffff961c40f9bd60 EFLAGS: 00010206 [ 846.435870] RAX: 0000000000000000 RBX: ffffc5f787719b80 RCX: ffffc5f787719b80 [ 846.436051] RDX: ffffffff8b9f4b88 RSI: ffffffff8b0ae622 RDI: ffff961c40f9bdb8 [ 846.436261] RBP: 0000000000001000 R08: ffffc5f787719b80 R09: 0000000000001000 [ 846.436433] R10: 0000000000000018 R11: fefefefefefefeff R12: ffffc5f787719b80 [ 846.436562] R13: ffffc5f787719b80 R14: ffff89dff4ff88d0 R15: 0ffff89dfaddee60 [ 846.436658] FS: 0000000000000000(0000) GS:ffff89dfffc00000(0000) knlGS:0000000000000000 [ 846.436758] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 846.436898] CR2: 0000000000000008 CR3: 00000001eddd0000 CR4: 00000000000006f0 [ 846.437001] Call Trace: [ 846.437181] ? check_preempt_wakeup+0xf2/0x230 [ 846.437276] ? check_preempt_curr+0x7c/0x90 [ 846.437370] fscrypt_decrypt_page+0x48/0x4d [ 846.437466] __fscrypt_decrypt_bio+0x5b/0x90 [ 846.437542] decrypt_work+0x12/0x20 [ 846.437651] process_one_work+0x15e/0x3d0 [ 846.437740] worker_thread+0x4c/0x440 [ 846.437848] kthread+0xf8/0x130 [ 846.437938] ? rescuer_thread+0x350/0x350 [ 846.438022] ? kthread_associate_blkcg+0x90/0x90 [ 846.438117] ret_from_fork+0x35/0x40 [ 846.438201] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev soundcore serio_raw i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 raid10 raid456 libcrc32c async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear qxl ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops pcbc drm 8139too aesni_intel 8139cp floppy psmouse mii aes_x86_64 crypto_simd pata_acpi cryptd glue_helper [ 846.438653] CR2: 0000000000000008 [ 846.438713] ---[ end trace abca54df39d14f60 ]--- [ 846.438796] RIP: 0010:fscrypt_do_page_crypto+0x6e/0x2d0 [ 846.438844] Code: 00 65 48 8b 04 25 28 00 00 00 48 89 84 24 88 00 00 00 31 c0 e8 43 c2 e0 ff 49 8b 86 48 02 00 00 85 ed c7 44 24 70 00 00 00 00 <48> 8b 58 08 0f 84 14 02 00 00 48 8b 78 10 48 8b 0c 24 48 c7 84 24 [ 846.439084] RSP: 0018:ffff961c40f9bd60 EFLAGS: 00010206 [ 846.439176] RAX: 0000000000000000 RBX: ffffc5f787719b80 RCX: ffffc5f787719b80 [ 846.440927] RDX: ffffffff8b9f4b88 RSI: ffffffff8b0ae622 RDI: ffff961c40f9bdb8 [ 846.442083] RBP: 0000000000001000 R08: ffffc5f787719b80 R09: 0000000000001000 [ 846.443284] R10: 0000000000000018 R11: fefefefefefefeff R12: ffffc5f787719b80 [ 846.444448] R13: ffffc5f787719b80 R14: ffff89dff4ff88d0 R15: 0ffff89dfaddee60 [ 846.445558] FS: 0000000000000000(0000) GS:ffff89dfffc00000(0000) knlGS:0000000000000000 [ 846.446687] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 846.447796] CR2: 0000000000000008 CR3: 00000001eddd0000 CR4: 00000000000006f0 - Location https://elixir.bootlin.com/linux/v4.18-rc4/source/fs/crypto/crypto.c#L149 struct crypto_skcipher *tfm = ci->ci_ctfm; Here ci can be NULL Note that this issue maybe require CONFIG_F2FS_FS_ENCRYPTION=y to reproduce. Reported-by Wen Xu <wen.xu@gatech.edu> Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-08-13f2fs: fix to do sanity check with inline flagsChao Yu
https://bugzilla.kernel.org/show_bug.cgi?id=200221 - Overview BUG() in clear_inode() when mounting and un-mounting a corrupted f2fs image - Reproduce - Kernel message [ 538.601448] F2FS-fs (loop0): Invalid segment/section count (31, 24 x 1376257) [ 538.601458] F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock [ 538.724091] F2FS-fs (loop0): Try to recover 2th superblock, ret: 0 [ 538.724102] F2FS-fs (loop0): Mounted with checkpoint version = 2 [ 540.970834] ------------[ cut here ]------------ [ 540.970838] kernel BUG at fs/inode.c:512! [ 540.971750] invalid opcode: 0000 [#1] SMP KASAN PTI [ 540.972755] CPU: 1 PID: 1305 Comm: umount Not tainted 4.18.0-rc1+ #4 [ 540.974034] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 540.982913] RIP: 0010:clear_inode+0xc0/0xd0 [ 540.983774] Code: 8d a3 30 01 00 00 4c 89 e7 e8 1c ec f8 ff 48 8b 83 30 01 00 00 49 39 c4 75 1a 48 c7 83 a0 00 00 00 60 00 00 00 5b 41 5c 5d c3 <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 1f 40 00 66 66 66 66 90 55 [ 540.987570] RSP: 0018:ffff8801e34a7b70 EFLAGS: 00010002 [ 540.988636] RAX: 0000000000000000 RBX: ffff8801e9b744e8 RCX: ffffffffb840eb3a [ 540.990063] RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8801e9b746b8 [ 540.991499] RBP: ffff8801e34a7b80 R08: ffffed003d36e8ce R09: ffffed003d36e8ce [ 540.992923] R10: 0000000000000001 R11: ffffed003d36e8cd R12: ffff8801e9b74668 [ 540.994360] R13: ffff8801e9b74760 R14: ffff8801e9b74528 R15: ffff8801e9b74530 [ 540.995786] FS: 00007f4662bdf840(0000) GS:ffff8801f6f00000(0000) knlGS:0000000000000000 [ 540.997403] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 540.998571] CR2: 000000000175c568 CR3: 00000001dcfe6000 CR4: 00000000000006e0 [ 541.000015] Call Trace: [ 541.000554] f2fs_evict_inode+0x253/0x630 [ 541.001381] evict+0x16f/0x290 [ 541.002015] iput+0x280/0x300 [ 541.002654] dentry_unlink_inode+0x165/0x1e0 [ 541.003528] __dentry_kill+0x16a/0x260 [ 541.004300] dentry_kill+0x70/0x250 [ 541.005018] dput+0x154/0x1d0 [ 541.005635] do_one_tree+0x34/0x40 [ 541.006354] shrink_dcache_for_umount+0x3f/0xa0 [ 541.007285] generic_shutdown_super+0x43/0x1c0 [ 541.008192] kill_block_super+0x52/0x80 [ 541.008978] kill_f2fs_super+0x62/0x70 [ 541.009750] deactivate_locked_super+0x6f/0xa0 [ 541.010664] deactivate_super+0x5e/0x80 [ 541.011450] cleanup_mnt+0x61/0xa0 [ 541.012151] __cleanup_mnt+0x12/0x20 [ 541.012893] task_work_run+0xc8/0xf0 [ 541.013635] exit_to_usermode_loop+0x125/0x130 [ 541.014555] do_syscall_64+0x138/0x170 [ 541.015340] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 541.016375] RIP: 0033:0x7f46624bf487 [ 541.017104] Code: 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 c9 2b 00 f7 d8 64 89 01 48 [ 541.020923] RSP: 002b:00007fff5e12e9a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 541.022452] RAX: 0000000000000000 RBX: 0000000001753030 RCX: 00007f46624bf487 [ 541.023885] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 000000000175a1e0 [ 541.025318] RBP: 000000000175a1e0 R08: 0000000000000000 R09: 0000000000000014 [ 541.026755] R10: 00000000000006b2 R11: 0000000000000246 R12: 00007f46629c883c [ 541.028186] R13: 0000000000000000 R14: 0000000001753210 R15: 00007fff5e12ec30 [ 541.029626] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy [ 541.039445] ---[ end trace 4ce02f25ff7d3df5 ]--- [ 541.040392] RIP: 0010:clear_inode+0xc0/0xd0 [ 541.041240] Code: 8d a3 30 01 00 00 4c 89 e7 e8 1c ec f8 ff 48 8b 83 30 01 00 00 49 39 c4 75 1a 48 c7 83 a0 00 00 00 60 00 00 00 5b 41 5c 5d c3 <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 1f 40 00 66 66 66 66 90 55 [ 541.045042] RSP: 0018:ffff8801e34a7b70 EFLAGS: 00010002 [ 541.046099] RAX: 0000000000000000 RBX: ffff8801e9b744e8 RCX: ffffffffb840eb3a [ 541.047537] RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8801e9b746b8 [ 541.048965] RBP: ffff8801e34a7b80 R08: ffffed003d36e8ce R09: ffffed003d36e8ce [ 541.050402] R10: 0000000000000001 R11: ffffed003d36e8cd R12: ffff8801e9b74668 [ 541.051832] R13: ffff8801e9b74760 R14: ffff8801e9b74528 R15: ffff8801e9b74530 [ 541.053263] FS: 00007f4662bdf840(0000) GS:ffff8801f6f00000(0000) knlGS:0000000000000000 [ 541.054891] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 541.056039] CR2: 000000000175c568 CR3: 00000001dcfe6000 CR4: 00000000000006e0 [ 541.058506] ================================================================== [ 541.059991] BUG: KASAN: stack-out-of-bounds in update_stack_state+0x38c/0x3e0 [ 541.061513] Read of size 8 at addr ffff8801e34a7970 by task umount/1305 [ 541.063302] CPU: 1 PID: 1305 Comm: umount Tainted: G D 4.18.0-rc1+ #4 [ 541.064838] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 541.066778] Call Trace: [ 541.067294] dump_stack+0x7b/0xb5 [ 541.067986] print_address_description+0x70/0x290 [ 541.068941] kasan_report+0x291/0x390 [ 541.069692] ? update_stack_state+0x38c/0x3e0 [ 541.070598] __asan_load8+0x54/0x90 [ 541.071315] update_stack_state+0x38c/0x3e0 [ 541.072172] ? __read_once_size_nocheck.constprop.7+0x20/0x20 [ 541.073340] ? vprintk_func+0x27/0x60 [ 541.074096] ? printk+0xa3/0xd3 [ 541.074762] ? __save_stack_trace+0x5e/0x100 [ 541.075634] unwind_next_frame.part.5+0x18e/0x490 [ 541.076594] ? unwind_dump+0x290/0x290 [ 541.077368] ? __show_regs+0x2c4/0x330 [ 541.078142] __unwind_start+0x106/0x190 [ 541.085422] __save_stack_trace+0x5e/0x100 [ 541.086268] ? __save_stack_trace+0x5e/0x100 [ 541.087161] ? unlink_anon_vmas+0xba/0x2c0 [ 541.087997] save_stack_trace+0x1f/0x30 [ 541.088782] save_stack+0x46/0xd0 [ 541.089475] ? __alloc_pages_slowpath+0x1420/0x1420 [ 541.090477] ? flush_tlb_mm_range+0x15e/0x220 [ 541.091364] ? __dec_node_state+0x24/0xb0 [ 541.092180] ? lock_page_memcg+0x85/0xf0 [ 541.092979] ? unlock_page_memcg+0x16/0x80 [ 541.093812] ? page_remove_rmap+0x198/0x520 [ 541.094674] ? mark_page_accessed+0x133/0x200 [ 541.095559] ? _cond_resched+0x1a/0x50 [ 541.096326] ? unmap_page_range+0xcd4/0xe50 [ 541.097179] ? rb_next+0x58/0x80 [ 541.097845] ? rb_next+0x58/0x80 [ 541.098518] __kasan_slab_free+0x13c/0x1a0 [ 541.099352] ? unlink_anon_vmas+0xba/0x2c0 [ 541.100184] kasan_slab_free+0xe/0x10 [ 541.100934] kmem_cache_free+0x89/0x1e0 [ 541.101724] unlink_anon_vmas+0xba/0x2c0 [ 541.102534] free_pgtables+0x101/0x1b0 [ 541.103299] exit_mmap+0x146/0x2a0 [ 541.103996] ? __ia32_sys_munmap+0x50/0x50 [ 541.104829] ? kasan_check_read+0x11/0x20 [ 541.105649] ? mm_update_next_owner+0x322/0x380 [ 541.106578] mmput+0x8b/0x1d0 [ 541.107191] do_exit+0x43a/0x1390 [ 541.107876] ? mm_update_next_owner+0x380/0x380 [ 541.108791] ? deactivate_super+0x5e/0x80 [ 541.109610] ? cleanup_mnt+0x61/0xa0 [ 541.110351] ? __cleanup_mnt+0x12/0x20 [ 541.111115] ? task_work_run+0xc8/0xf0 [ 541.111879] ? exit_to_usermode_loop+0x125/0x130 [ 541.112817] rewind_stack_do_exit+0x17/0x20 [ 541.113666] RIP: 0033:0x7f46624bf487 [ 541.114404] Code: Bad RIP value. [ 541.115094] RSP: 002b:00007fff5e12e9a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 541.116605] RAX: 0000000000000000 RBX: 0000000001753030 RCX: 00007f46624bf487 [ 541.118034] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 000000000175a1e0 [ 541.119472] RBP: 000000000175a1e0 R08: 0000000000000000 R09: 0000000000000014 [ 541.120890] R10: 00000000000006b2 R11: 0000000000000246 R12: 00007f46629c883c [ 541.122321] R13: 0000000000000000 R14: 0000000001753210 R15: 00007fff5e12ec30 [ 541.124061] The buggy address belongs to the page: [ 541.125042] page:ffffea00078d29c0 count:0 mapcount:0 mapping:0000000000000000 index:0x0 [ 541.126651] flags: 0x2ffff0000000000() [ 541.127418] raw: 02ffff0000000000 dead000000000100 dead000000000200 0000000000000000 [ 541.128963] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 541.130516] page dumped because: kasan: bad access detected [ 541.131954] Memory state around the buggy address: [ 541.132924] ffff8801e34a7800: 00 f1 f1 f1 f1 00 f4 f4 f4 f3 f3 f3 f3 00 00 00 [ 541.134378] ffff8801e34a7880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 541.135814] >ffff8801e34a7900: 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 [ 541.137253] ^ [ 541.138637] ffff8801e34a7980: f1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 541.140075] ffff8801e34a7a00: 00 00 00 00 00 00 00 00 f3 00 00 00 00 00 00 00 [ 541.141509] ================================================================== - Location https://elixir.bootlin.com/linux/v4.18-rc1/source/fs/inode.c#L512 BUG_ON(inode->i_data.nrpages); The root cause is root directory inode is corrupted, it has both inline_data and inline_dentry flag, and its nlink is zero, so in ->evict(), after dropping all page cache, it grabs page #0 for inline data truncation, result in panic in later clear_inode() where we will check inode->i_data.nrpages value. This patch adds inline flags check in sanity_check_inode, in addition, do sanity check with root inode's nlink. Reported-by Wen Xu <wen.xu@gatech.edu> Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
generated by cgit (git 2.34.1) at 2025-09-15 21:45:52 +0000