summaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2019-11-08mac80211: fix station inactive_time shortly after bootAhmed Zaki
In the first 5 minutes after boot (time of INITIAL_JIFFIES), ieee80211_sta_last_active() returns zero if last_ack is zero. This leads to "inactive time" showing jiffies_to_msecs(jiffies). # iw wlan0 station get fc:ec:da:64:a6:dd Station fc:ec:da:64:a6:dd (on wlan0) inactive time: 4294894049 ms . . connected time: 70 seconds Fix by returning last_rx if last_ack == 0. Signed-off-by: Ahmed Zaki <anzaki@gmail.com> Link: https://lore.kernel.org/r/20191031121243.27694-1-anzaki@gmail.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-11-08net/fq_impl: Switch to kvmalloc() for memory allocationToke Høiland-Jørgensen
The FQ implementation used by mac80211 allocates memory using kmalloc(), which can fail; and Johannes reported that this actually happens in practice. To avoid this, switch the allocation to kvmalloc() instead; this also brings fq_impl in line with all the FQ qdiscs. Fixes: 557fc4a09803 ("fq: add fair queuing framework") Reported-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/r/20191105155750.547379-1-toke@redhat.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-11-08mac80211: fix ieee80211_txq_setup_flows() failure pathJohannes Berg
If ieee80211_txq_setup_flows() fails, we don't clean up LED state properly, leading to crashes later on, fix that. Fixes: dc8b274f0952 ("mac80211: Move up init of TXQs") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Toke Høiland-Jørgensen <toke@toke.dk> Link: https://lore.kernel.org/r/20191105154110.1ccf7112ba5d.I0ba865792446d051867b33153be65ce6b063d98c@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-11-08Merge tag 'drm-fixes-5.4-2019-11-06' of ↵Dave Airlie
git://people.freedesktop.org/~agd5f/linux into drm-fixes drm-fixes-5.4-2019-11-06: amdgpu: - Fix navi14 display issue root cause and revert workaround - GPU reset scheduler interaction fix - Fix fan boost on multi-GPU - Gfx10 and sdma5 fixes for navi - GFXOFF fix for renoir - Add navi14 PCI ID - GPUVM fix for arcturus radeon: - Port an SI power fix from amdgpu Signed-off-by: Dave Airlie <airlied@redhat.com> From: Alex Deucher <alexdeucher@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191107032241.1021217-1-alexander.deucher@amd.com
2019-11-08Merge tag 'drm-intel-fixes-2019-11-06' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-intel into drm-fixes - Fix HPD poll to avoid kworker consuming a lot of cpu cycles. - Do not use TBT type for non Type-C ports. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191106213958.GA16525@intel.com
2019-11-08drm/i915/gvt: fix dropping obj reference twicePan Bian
The reference count of obj will be decremented twice if error occurs in dma_buf_fd(). Additionally, attempting to read the reference count of obj after dropping reference may lead to a use after free bug. Here, we drop obj's reference until it is not used. Fixes: e546e281d33d ("drm/i915/gvt: Dmabuf support for GVT-g") Signed-off-by: Pan Bian <bianpan2016@163.com> Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2019-11-08Merge tag 'drm-misc-fixes-2019-11-07-1' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-misc into drm-fixes - Some new documentation for GEM shmem madvise helpers - Fix for a state dereference in atomic self-refresh helpers - One compilation fix for c2p fbdev helpers Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <mripard@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20191107082215.GA34850@gilmour.lan
2019-11-07ipv4: Fix table id reference in fib_sync_down_addrDavid Ahern
Hendrik reported routes in the main table using source address are not removed when the address is removed. The problem is that fib_sync_down_addr does not account for devices in the default VRF which are associated with the main table. Fix by updating the table id reference. Fixes: 5a56a0b3a45d ("net: Don't delete routes in different VRFs") Reported-by: Hendrik Donner <hd@os-cillation.de> Signed-off-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-07ipv6: fixes rt6_probe() and fib6_nh->last_probe initEric Dumazet
While looking at a syzbot KCSAN report [1], I found multiple issues in this code : 1) fib6_nh->last_probe has an initial value of 0. While probably okay on 64bit kernels, this causes an issue on 32bit kernels since the time_after(jiffies, 0 + interval) might be false ~24 days after boot (for HZ=1000) 2) The data-race found by KCSAN I could use READ_ONCE() and WRITE_ONCE(), but we also can take the opportunity of not piling-up too many rt6_probe_deferred() works by using instead cmpxchg() so that only one cpu wins the race. [1] BUG: KCSAN: data-race in find_match / find_match write to 0xffff8880bb7aabe8 of 8 bytes by interrupt on cpu 1: rt6_probe net/ipv6/route.c:663 [inline] find_match net/ipv6/route.c:757 [inline] find_match+0x5bd/0x790 net/ipv6/route.c:733 __find_rr_leaf+0xe3/0x780 net/ipv6/route.c:831 find_rr_leaf net/ipv6/route.c:852 [inline] rt6_select net/ipv6/route.c:896 [inline] fib6_table_lookup+0x383/0x650 net/ipv6/route.c:2164 ip6_pol_route+0xee/0x5c0 net/ipv6/route.c:2200 ip6_pol_route_output+0x48/0x60 net/ipv6/route.c:2452 fib6_rule_lookup+0x3d6/0x470 net/ipv6/fib6_rules.c:117 ip6_route_output_flags_noref+0x16b/0x230 net/ipv6/route.c:2484 ip6_route_output_flags+0x50/0x1a0 net/ipv6/route.c:2497 ip6_dst_lookup_tail+0x25d/0xc30 net/ipv6/ip6_output.c:1049 ip6_dst_lookup_flow+0x68/0x120 net/ipv6/ip6_output.c:1150 inet6_csk_route_socket+0x2f7/0x420 net/ipv6/inet6_connection_sock.c:106 inet6_csk_xmit+0x91/0x1f0 net/ipv6/inet6_connection_sock.c:121 __tcp_transmit_skb+0xe81/0x1d60 net/ipv4/tcp_output.c:1169 tcp_transmit_skb net/ipv4/tcp_output.c:1185 [inline] tcp_xmit_probe_skb+0x19b/0x1d0 net/ipv4/tcp_output.c:3735 read to 0xffff8880bb7aabe8 of 8 bytes by interrupt on cpu 0: rt6_probe net/ipv6/route.c:657 [inline] find_match net/ipv6/route.c:757 [inline] find_match+0x521/0x790 net/ipv6/route.c:733 __find_rr_leaf+0xe3/0x780 net/ipv6/route.c:831 find_rr_leaf net/ipv6/route.c:852 [inline] rt6_select net/ipv6/route.c:896 [inline] fib6_table_lookup+0x383/0x650 net/ipv6/route.c:2164 ip6_pol_route+0xee/0x5c0 net/ipv6/route.c:2200 ip6_pol_route_output+0x48/0x60 net/ipv6/route.c:2452 fib6_rule_lookup+0x3d6/0x470 net/ipv6/fib6_rules.c:117 ip6_route_output_flags_noref+0x16b/0x230 net/ipv6/route.c:2484 ip6_route_output_flags+0x50/0x1a0 net/ipv6/route.c:2497 ip6_dst_lookup_tail+0x25d/0xc30 net/ipv6/ip6_output.c:1049 ip6_dst_lookup_flow+0x68/0x120 net/ipv6/ip6_output.c:1150 inet6_csk_route_socket+0x2f7/0x420 net/ipv6/inet6_connection_sock.c:106 inet6_csk_xmit+0x91/0x1f0 net/ipv6/inet6_connection_sock.c:121 __tcp_transmit_skb+0xe81/0x1d60 net/ipv4/tcp_output.c:1169 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 18894 Comm: udevd Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Fixes: cc3a86c802f0 ("ipv6: Change rt6_probe to take a fib6_nh") Fixes: f547fac624be ("ipv6: rate-limit probes for neighbourless routes") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-07net: hns: Fix the stray netpoll locks causing deadlock in NAPI pathSalil Mehta
This patch fixes the problem of the spin locks, originally meant for the netpoll path of hns driver, causing deadlock in the normal NAPI poll path. The issue happened due to the presence of the stray leftover spin lock code related to the netpoll, whose support was earlier removed from the HNS[1], got activated due to enabling of NET_POLL_CONTROLLER switch. Earlier background: The netpoll handling code originally had this bug(as identified by Marc Zyngier[2]) of wrong spin lock API being used which did not disable the interrupts and hence could cause locking issues. i.e. if the lock were first acquired in context to thread like 'ip' util and this lock if ever got later acquired again in context to the interrupt context like TX/RX (Interrupts could always pre-empt the lock holding task and acquire the lock again) and hence could cause deadlock. Proposed Solution: 1. If the netpoll was enabled in the HNS driver, which is not right now, we could have simply used spin_[un]lock_irqsave() 2. But as netpoll is disabled, therefore, it is best to get rid of the existing locks and stray code for now. This should solve the problem reported by Marc. [1] https://git.kernel.org/torvalds/c/4bd2c03be7 [2] https://patchwork.ozlabs.org/patch/1189139/ Fixes: 4bd2c03be707 ("net: hns: remove ndo_poll_controller") Cc: lipeng <lipeng321@huawei.com> Cc: Yisen Zhuang <yisen.zhuang@huawei.com> Cc: Eric Dumazet <edumazet@google.com> Cc: David S. Miller <davem@davemloft.net> Reported-by: Marc Zyngier <maz@kernel.org> Acked-by: Marc Zyngier <maz@kernel.org> Tested-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-07net: usb: qmi_wwan: add support for DW5821e with eSIM supportAleksander Morgado
Exactly same layout as the default DW5821e module, just a different vid/pid. The QMI interface is exposed in USB configuration #1: P: Vendor=413c ProdID=81e0 Rev=03.18 S: Manufacturer=Dell Inc. S: Product=DW5821e-eSIM Snapdragon X20 LTE S: SerialNumber=0123456789ABCDEF C: #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=500mA I: If#=0x0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan I: If#=0x1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid I: If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option Signed-off-by: Aleksander Morgado <aleksander@aleksander.es> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-07CDC-NCM: handle incomplete transfer of MTUOliver Neukum
A malicious device may give half an answer when asked for its MTU. The driver will proceed after this with a garbage MTU. Anything but a complete answer must be treated as an error. V2: used sizeof as request by Alexander Reported-and-tested-by: syzbot+0631d878823ce2411636@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-07nfc: netlink: fix double device reference dropPan Bian
The function nfc_put_device(dev) is called twice to drop the reference to dev when there is no associated local llcp. Remove one of them to fix the bug. Fixes: 52feb444a903 ("NFC: Extend netlink interface for LTO, RW, and MIUX parameters support") Fixes: d9b8d8e19b07 ("NFC: llcp: Service Name Lookup netlink interface") Signed-off-by: Pan Bian <bianpan2016@163.com> Reviewed-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-07selftests: sync: Fix cast warnings on armMasami Hiramatsu
Fix warnings on __u64 and pointer translation on arm and other 32bit architectures. Since the pointer is 32bits on those archs, we should not directly cast those types. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Emilio López <emilio.lopez@collabora.co.uk> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-11-07selftests: net: Fix printf format warnings on armMasami Hiramatsu
Fix printf format warnings on arm (and other 32bit arch). - udpgso.c and udpgso_bench_tx use %lu for size_t but it should be unsigned long long on 32bit arch. - so_txtime.c uses %ld for int64_t, but it should be unsigned long long on 32bit arch. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Willem de Bruijn <willemb@google.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-11-07selftests: net: Use size_t and ssize_t for counting file sizeMasami Hiramatsu
Use size_t and ssize_t correctly for counting send file size instead of unsigned long and long, because long is 32bit on 32bit arch, which is not enough for counting long file size (>4GB). Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Eric Dumazet <edumazet@google.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-11-07selftests: vm: Build/Run 64bit tests only on 64bit archMasami Hiramatsu
Some virtual address range tests requires 64bit address space, and we can not build and run those tests on the 32bit machine. Filter the 64bit architectures in Makefile and run_vmtests, so that those tests are built/run only on 64bit archs. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-11-07selftests: proc: Make va_max 1MBMasami Hiramatsu
Currently proc-self-map-files-002.c sets va_max (max test address of user virtual address) to 4GB, but it is too big for 32bit arch and 1UL << 32 is overflow on 32bit long. Also since this value should be enough bigger than vm.mmap_min_addr (64KB or 32KB by default), 1MB should be enough. Make va_max 1MB unconditionally. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-11-07kselftest: Fix NULL INSTALL_PATH for TARGETS runlistPrabhakar Kushwaha
As per commit 131b30c94fbc ("kselftest: exclude failed TARGETS from runlist") failed targets were excluded from the runlist. But value $$INSTALL_PATH is always NULL. It should be $INSTALL_PATH instead $$INSTALL_PATH. So, fix Makefile to use $INSTALL_PATH. Fixes: 131b30c94fbc ("kselftest: exclude failed TARGETS from runlist") Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com> Reviewed-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-11-07selftests: Move kselftest_module.sh into kselftest/Kees Cook
The kselftest_module.sh file was not being installed by the Makefile "install" target, rendering the lib/*.sh tests nonfunction. This fixes that and takes the opportunity to move it into the kselftest/ subdirectory which is where the kselftest infrastructure bits are collecting. Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Link: https://lore.kernel.org/lkml/CA+G9fYsfJpXQvOvHdjtg8z4a89dSStOQZOKa9zMjjQgWKng1aw@mail.gmail.com Fixes: d3460527706e ("kselftest: Add test runner creation script") Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-11-07selftests: gen_kselftest_tar.sh: Do not clobber kselftest/Kees Cook
The default installation location for gen_kselftest_tar.sh was still "kselftest/" which collides with the existing directory. Instead, this moves the installation target into "kselftest_install/kselftest/" and adjusts the tar creation accordingly. This also adjusts indentation and logic to be consistent. Fixes: 42d46e57ec97 ("selftests: Extract single-test shell logic from lib.mk") Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-11-07selftests: breakpoints: Fix a typo of function nameMasami Hiramatsu
Since commit 5821ba969511 ("selftests: Add test plan API to kselftest.h and adjust callers") accidentally introduced 'a' typo in the front of run_test() function, breakpoint_test_arm64.c became not able to be compiled. Remove the 'a' from arun_test(). Fixes: 5821ba969511 ("selftests: Add test plan API to kselftest.h and adjust callers") Reported-by: Jun Takahashi <takahashi.jun_s@aa.socionext.com> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Kees Cook <keescook@chromium.org> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-11-07Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid Pull HID fixes from Jiri Kosina: "Two fixes for the HID subsystem: - regression fix for i2c-hid power management (Hans de Goede) - signed vs unsigned API fix for Wacom driver (Jason Gerecke)" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: HID: wacom: generic: Treat serial number and related fields as unsigned HID: i2c-hid: Send power-on command after reset
2019-11-07blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTATTejun Heo
blkg_rwstat is now only used by bfq-iosched and blk-throtl when on cgroup1. Let's move it into its own files and gate it behind a config option. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-07blk-cgroup: reimplement basic IO stats using cgroup rstatTejun Heo
blk-cgroup has been using blkg_rwstat to track basic IO stats. Unfortunately, reading recursive stats scales badly as itinvolves walking all descendants. On systems with a huge number of cgroups (dead or alive), this can lead to substantial CPU cost when reading IO stats. This patch reimplements basic IO stats using cgroup rstat which uses more memory but makes recursive stat reading O(# descendants which have been active since last reading) instead of O(# descendants). * blk-cgroup core no longer uses sync/async stats. Introduce new stat enums - BLKG_IOSTAT_{READ|WRITE|DISCARD}. * Add blkg_iostat[_set] which encapsulates byte and io stats, last values for propagation delta calculation and u64_stats_sync for correctness on 32bit archs. * Update the new percpu stat counters directly and implement blkcg_rstat_flush() to implement propagation. * blkg_print_stat() can now bring the stats up to date by calling cgroup_rstat_flush() and print them instead of directly summing up all descendants. * It now allocates 96 bytes per cpu. It used to be 40 bytes. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Dan Schatzberg <dschatzberg@fb.com> Cc: Daniel Xu <dlxu@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-07blk-cgroup: remove now unused blkg_print_stat_{bytes|ios}_recursive()Tejun Heo
These don't have users anymore. Remove them. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-07blk-throtl: stop using blkg->stat_bytes and ->stat_iosTejun Heo
When used on cgroup1, blk-throtl uses the blkg->stat_bytes and ->stat_ios from blk-cgroup core to populate four stat knobs. blk-cgroup core is moving away from blkg_rwstat to improve scalability and won't be able to support this usage. It isn't like the sharing gains all that much. Let's break them out to dedicated rwstat counters which are updated when on cgroup1. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-07bfq-iosched: stop using blkg->stat_bytes and ->stat_iosTejun Heo
When used on cgroup1, bfq uses the blkg->stat_bytes and ->stat_ios from blk-cgroup core to populate six stat knobs. blk-cgroup core is moving away from blkg_rwstat to improve scalability and won't be able to support this usage. It isn't like the sharing gains all that much. Let's break it out to dedicated rwstat counters which are updated when on cgroup1. This makes use of bfqg_*rwstat*() helpers outside of CONFIG_BFQ_CGROUP_DEBUG. Move them out. v2: Compile fix when !CONFIG_BFQ_CGROUP_DEBUG. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Paolo Valente <paolo.valente@linaro.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-07bfq-iosched: relocate bfqg_*rwstat*() helpersTejun Heo
Collect them right under #ifdef CONFIG_BFQ_CGROUP_DEBUG. The next patch will use them from !DEBUG path and this makes it easy to move them out of the ifdef block. This is pure code reorganization. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-07Merge branch 'for-linus' into for-5.5/blockJens Axboe
Pull on for-linus to resolve what otherwise would have been a conflict with the cgroups rstat patchset from Tejun. * for-linus: (942 commits) blkcg: make blkcg_print_stat() print stats only for online blkgs nvme: change nvme_passthru_cmd64 to explicitly mark rsvd nvme-multipath: fix crash in nvme_mpath_clear_ctrl_paths nvme-rdma: fix a segmentation fault during module unload iocost: don't nest spin_lock_irq in ioc_weight_write() io_uring: ensure we clear io_kiocb->result before each issue um-ubd: Entrust re-queue to the upper layers nvme-multipath: remove unused groups_only mode in ana log nvme-multipath: fix possible io hang after ctrl reconnect io_uring: don't touch ctx in setup after ring fd install io_uring: Fix leaked shadow_req Linux 5.4-rc5 riscv: cleanup do_trap_break nbd: verify socket is supported during setup ata: libahci_platform: Fix regulator_get_optional() misuse nbd: handle racing with error'ed out commands nbd: protect cmd->status with cmd->lock io_uring: fix bad inflight accounting for SETUP_IOPOLL|SETUP_SQTHREAD io_uring: used cached copies of sq->dropped and cq->overflow ARM: dts: stm32: relax qspi pins slew-rate for stm32mp157 ...
2019-11-07io_uring: properly mark async work as bounded vs unboundedJens Axboe
Now that io-wq supports separating the two request lifetime types, mark the following IO as having unbounded runtimes: - Any read/write to a non-regular file - Any specific networked IO - Any poll command Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-07io-wq: add support for bounded vs unbunded workJens Axboe
io_uring supports request types that basically have two different lifetimes: 1) Bounded completion time. These are requests like disk reads or writes, which we know will finish in a finite amount of time. 2) Unbounded completion time. These are generally networked IO, where we have no idea how long they will take to complete. Another example is POLL commands. This patch provides support for io-wq to handle these differently, so we don't starve bounded requests by tying up workers for too long. By default all work is bounded, unless otherwise specified in the work item. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-09io-wq: io_wqe_run_queue() doesn't need to use list_empty_careful()Jens Axboe
We hold the wqe lock at this point (which is also annotated), so there's no need to use the careful variant of list_empty(). Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-09io_uring: add support for backlogged CQ ringJens Axboe
Currently we drop completion events, if the CQ ring is full. That's fine for requests with bounded completion times, but it may make it harder or impossible to use io_uring with networked IO where request completion times are generally unbounded. Or with POLL, for example, which is also unbounded. After this patch, we never overflow the ring, we simply store requests in a backlog for later flushing. This flushing is done automatically by the kernel. To prevent the backlog from growing indefinitely, if the backlog is non-empty, we apply back pressure on IO submissions. Any attempt to submit new IO with a non-empty backlog will get an -EBUSY return from the kernel. This is a signal to the application that it has backlogged CQ events, and that it must reap those before being allowed to submit more IO. Note that if we do return -EBUSY, we will have filled whatever backlogged events into the CQ ring first, if there's room. This means the application can safely reap events WITHOUT entering the kernel and waiting for them, they are already available in the CQ ring. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-08io_uring: pass in io_kiocb to fill/add CQ handlersJens Axboe
This is in preparation for handling CQ ring overflow a bit smarter. We should not have any functional changes in this patch. Most of the changes are fairly straight forward, the only ones that stick out a bit are the ones that change __io_free_req() to take the reference count into account. If the request hasn't been submitted yet, we know it's safe to simply ignore references and free it. But let's clean these up too, as later patches will depend on the caller doing the right thing if the completion logging grabs a reference to the request. Reviewed-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-08io_uring: make io_cqring_events() take 'ctx' as argumentJens Axboe
The rings can be derived from the ctx, and we need the ctx there for a future change. No functional changes in this patch. Reviewed-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-07io_uring: add support for linked SQE timeoutsJens Axboe
While we have support for generic timeouts, we don't have a way to tie a timeout to a specific SQE. The generic timeouts simply trigger wakeups on the CQ ring. This adds support for IORING_OP_LINK_TIMEOUT. This command is only valid as a link to a previous command. The timeout specific can be either relative or absolute, following the same rules as IORING_OP_TIMEOUT. If the timeout triggers before the dependent command completes, it will attempt to cancel that command. Likewise, if the dependent command completes before the timeout triggers, it will cancel the timeout. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-07io_uring: abstract out io_async_cancel_one() helperJens Axboe
We're going to need this helper in a future patch, so move it out of io_async_cancel() and into its own separate function. No functional changes in this patch. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-07ceph: return -EINVAL if given fsc mount option on kernel w/o supportJeff Layton
If someone requests fscache on the mount, and the kernel doesn't support it, it should fail the mount. [ Drop ceph prefix -- it's provided by pr_err. ] Signed-off-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2019-11-07dm raid: Remove unnecessary negation of a shift in raid10_format_to_md_layoutNathan Chancellor
When building with Clang + -Wtautological-constant-compare: drivers/md/dm-raid.c:619:8: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] r = !RAID10_OFFSET; ^ drivers/md/dm-raid.c:517:28: note: expanded from macro 'RAID10_OFFSET' #define RAID10_OFFSET (1 << 16) /* stripes with data copies area adjacent on devices */ ^ 1 warning generated. Negating a non-zero number will always make it zero, which is the default value of r in this function so this statement is unnecessary; remove it so that clang no longer warns. Link: https://github.com/ClangBuiltLinux/linux/issues/753 Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2019-11-07KVM: arm/arm64: Let the timer expire in hardirq context on RTThomas Gleixner
The timers are canceled from an preempt-notifier which is invoked with disabled preemption which is not allowed on PREEMPT_RT. The timer callback is short so in could be invoked in hard-IRQ context on -RT. Let the timer expire on hard-IRQ context even on -RT. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Marc Zyngier <maz@kernel.org> Tested-by: Julien Grall <julien.grall@arm.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20191107095424.16647-1-bigeasy@linutronix.de
2019-11-07staging: Fix error return code in vboxsf_fill_super()Wei Yongjun
Fix to return negative error code -ENOMEM from the error handling case instead of 0, as done elsewhere in this function. Fixes: df4028658f9d ("staging: Add VirtualBox guest shared folder (vboxsf) support") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20191106115954.114678-1-weiyongjun1@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07staging: vboxsf: fix dereference of pointer dentry before it is null checkedColin Ian King
Currently the pointer dentry is being dereferenced before it is being null checked. Fix this by only dereferencing dentry once we know it is not null. Addresses-Coverity: ("Dereference before null check") Fixes: df4028658f9d ("staging: Add VirtualBox guest shared folder (vboxsf) support") Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20191105175108.79824-1-colin.king@canonical.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07staging: vboxsf: Remove unused including <linux/version.h>YueHaibing
Remove including <linux/version.h> that don't need it. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Link: https://lore.kernel.org/r/20191107015923.100013-1-yuehaibing@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07dm zoned: reduce overhead of backing device checksDmitry Fomichev
Commit 75d66ffb48efb3 added backing device health checks and as a part of these checks, check_events() block ops template call is invoked in dm-zoned mapping path as well as in reclaim and flush path. Calling check_events() with ATA or SCSI backing devices introduces a blocking scsi_test_unit_ready() call being made in sd_check_events(). Even though the overhead of calling scsi_test_unit_ready() is small for ATA zoned devices, it is much larger for SCSI and it affects performance in a very negative way. Fix this performance regression by executing check_events() only in case of any I/O errors. The function dmz_bdev_is_dying() is modified to call only blk_queue_dying(), while calls to check_events() are made in a new helper function, dmz_check_bdev(). Reported-by: zhangxiaoxu <zhangxiaoxu5@huawei.com> Fixes: 75d66ffb48efb3 ("dm zoned: properly handle backing device failure") Cc: stable@vger.kernel.org Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2019-11-07x86/speculation/taa: Fix printing of TAA_MSG_SMT on IBRS_ALL CPUsJosh Poimboeuf
For new IBRS_ALL CPUs, the Enhanced IBRS check at the beginning of cpu_bugs_smt_update() causes the function to return early, unintentionally skipping the MDS and TAA logic. This is not a problem for MDS, because there appears to be no overlap between IBRS_ALL and MDS-affected CPUs. So the MDS mitigation would be disabled and nothing would need to be done in this function anyway. But for TAA, the TAA_MSG_SMT string will never get printed on Cascade Lake and newer. The check is superfluous anyway: when 'spectre_v2_enabled' is SPECTRE_V2_IBRS_ENHANCED, 'spectre_v2_user' is always SPECTRE_V2_USER_NONE, and so the 'spectre_v2_user' switch statement handles it appropriately by doing nothing. So just remove the check. Fixes: 1b42f017415b ("x86/speculation/taa: Add mitigation for TSX Async Abort") Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Tyler Hicks <tyhicks@canonical.com> Reviewed-by: Borislav Petkov <bp@suse.de>
2019-11-07scsi: sd_zbc: add zone open, close, and finish supportAjay Joshi
Implement REQ_OP_ZONE_OPEN, REQ_OP_ZONE_CLOSE and REQ_OP_ZONE_FINISH support to allow explicit control of zone states. Contains contributions from Matias Bjorling, Hans Holmberg, Keith Busch and Damien Le Moal. Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ajay Joshi <ajay.joshi@wdc.com> Signed-off-by: Matias Bjorling <matias.bjorling@wdc.com> Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com> Signed-off-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-07Merge branch 'fixes' of ↵Jens Axboe
git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi into for-5.5/drivers-post * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi: scsi: core: Handle drivers which set sg_tablesize to zero scsi: qla2xxx: fix NPIV tear down process scsi: sd_zbc: Fix sd_zbc_complete()
2019-11-07Merge tag 'scsi-fixes' of ↵Jens Axboe
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi into for-5.5/drivers-post SCSI fixes on 20191101 Nine changes, eight in drivers [ufs, target, lpfc x 2, qla2xxx x 4] and one core change in sd that fixes an I/O failure on DIF type 3 devices. Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com> * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (23 commits) scsi: qla2xxx: stop timer in shutdown path scsi: sd: define variable dif as unsigned int instead of bool scsi: target: cxgbit: Fix cxgbit_fw4_ack() scsi: qla2xxx: Fix partial flash write of MBI scsi: qla2xxx: Initialized mailbox to prevent driver load failure scsi: lpfc: Honor module parameter lpfc_use_adisc scsi: ufs-bsg: Wake the device before sending raw upiu commands scsi: lpfc: Check queue pointer before use scsi: qla2xxx: fixup incorrect usage of host_byte scsi: lpfc: remove left-over BUILD_NVME defines scsi: core: try to get module before removing device scsi: hpsa: add missing hunks in reset-patch scsi: target: core: Do not overwrite CDB byte 1 scsi: ch: Make it possible to open a ch device multiple times again scsi: fix kconfig dependency warning related to 53C700_LE_ON_BE scsi: sni_53c710: fix compilation error scsi: scsi_dh_alua: handle RTPG sense code correctly during state transitions scsi: qla2xxx: fix a potential NULL pointer dereference scsi: MAINTAINERS: Update qla2xxx driver scsi: zfcp: fix reaction on bit error threshold notification ...
2019-11-07null_blk: add zone open, close, and finish supportAjay Joshi
Implement REQ_OP_ZONE_OPEN, REQ_OP_ZONE_CLOSE and REQ_OP_ZONE_FINISH support to allow explicit control of zone states. Contains contributions from Matias Bjorling, Hans Holmberg, Keith Busch and Damien Le Moal. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ajay Joshi <ajay.joshi@wdc.com> Signed-off-by: Matias Bjorling <matias.bjorling@wdc.com> Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com> Signed-off-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
generated by cgit (git 2.34.1) at 2025-09-18 19:17:25 +0000