| Age | Commit message (Collapse) | Author |
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Recent changes (especially 05cd271fd61a ("cls_flower: Support multiple
masks per priority")) in the fl_flow_mask structure grow it and its
current size e.g. on x86_64 with defconfig is 760 bytes and more than
1024 bytes with some debug options enabled. Prior the mentioned commit
its size was 176 bytes (using defconfig on x86_64).
With regard to this fact it's reasonable to allocate this structure
dynamically in fl_change() to reduce its stack size.
v2:
- use kzalloc() instead of kcalloc()
Fixes: 05cd271fd61a ("cls_flower: Support multiple masks per priority")
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: Paul Blakey <paulb@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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signal handling core calls show_regs() with preemption disabled which
on ARC takes mmap_sem for mm/vma access, causing lockdep splat.
| [ARCLinux]# ./segv-null-ptr
| potentially unexpected fatal signal 11.
| BUG: sleeping function called from invalid context at kernel/fork.c:1011
| in_atomic(): 1, irqs_disabled(): 0, pid: 70, name: segv-null-ptr
| no locks held by segv-null-ptr/70.
| CPU: 0 PID: 70 Comm: segv-null-ptr Not tainted 4.18.0+ #69
|
| Stack Trace:
| arc_unwind_core+0xcc/0x100
| ___might_sleep+0x17a/0x190
| mmput+0x16/0xb8
| show_regs+0x52/0x310
| get_signal+0x5ee/0x610
| do_signal+0x2c/0x218
| resume_user_mode_begin+0x90/0xd8
Workaround by re-enabling preemption temporarily.
Note that the preemption disabling in core code around show_regs()
was introduced by commit 3a9f84d354ce ("signals, debug: fix BUG: using
smp_processor_id() in preemptible code in print_fatal_signal()")
to silence a differnt lockdep seen on x86 bakc in 2009.
Cc: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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and use smaller/on-stack buffer instead
The motivation for this change was lockdep splat like below.
| potentially unexpected fatal signal 11.
| BUG: sleeping function called from invalid context at ../mm/page_alloc.c:4317
| in_atomic(): 1, irqs_disabled(): 0, pid: 57, name: segv
| no locks held by segv/57.
| Preemption disabled at:
| [<8182f17e>] get_signal+0x4a6/0x7c4
| CPU: 0 PID: 57 Comm: segv Not tainted 4.17.0+ #23
|
| Stack Trace:
| arc_unwind_core.constprop.1+0xd0/0xf4
| __might_sleep+0x1f6/0x234
| __get_free_pages+0x174/0xca0
| show_regs+0x22/0x330
| get_signal+0x4ac/0x7c4 # print_fatal_signals() -> preempt_disable()
| do_signal+0x30/0x224
| resume_user_mode_begin+0x90/0xd8
So signal handling core calls show_regs() with preemption disabled but
an ensuing GFP_KERNEL page allocator call is flagged by lockdep.
We could have switched to GFP_NOWAIT, but turns out that is not enough
anways and eliding page allocator call leads to less code and
instruction traces to sift thru when debugging pesky crashes.
FWIW, this patch doesn't cure the lockdep splat (which next patch does).
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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No, not gonna die tonight.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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Move HW events mapping to separate function to make code more readable.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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Export all available ARC architected hardware events as
kernel PMU events to make non-generic events accessible.
ARC PMU HW allow us to read the list of all available
events names. So we generate kernel PMU event list
dynamically in arc_pmu_device_probe() using
human-readable events names we got from HW instead of
using pre-defined events list.
-------------------------->8--------------------------
$ perf list
[snip]
arc_pmu/bdata64/ [Kernel PMU event]
arc_pmu/bdcstall/ [Kernel PMU event]
arc_pmu/bdslot/ [Kernel PMU event]
arc_pmu/bfbmp/ [Kernel PMU event]
arc_pmu/bfirqex/ [Kernel PMU event]
arc_pmu/bflgstal/ [Kernel PMU event]
arc_pmu/bflush/ [Kernel PMU event]
-------------------------->8--------------------------
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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* Use BIT(), lower_32_bits(), upper_32_bits() macroses,
fix code style violations.
* Use u32, u64, s64 instead of uint32_t, uint64_t, int64_t
* Fix description comment as this code doesn't belong only to
ARC700 anymore.
* Use SPDX License Identifier.
* Remove useless ifdefs. ifdef around 'arc_pmu_match' structure
declaration is useless as we refer to 'arc_pmu_match' in
several places which aren't guarded with ifdef. Nevertheless
'ARC' option selects 'OF' unconditionally so we can simply
get rid of this ifdef.
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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So far we've mapped branches to "ijmp" which also counts conditional
branches NOT taken. This makes us different from other architectures
such as ARM which seem to be counting only taken branches.
So use "ijmptak" hardware condition which only counts (all jump
instructions that are taken)
'ijmptak' event is available on both ARCompact and ARCv2 ISA based
cores.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Cc: stable@vger.kernel.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
[vgupta: reworked changelog]
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In setup_arch_memory we reserve the memory area wherein the kernel
is located. Current implementation may reserve more memory than
it actually required in case of CONFIG_LINUX_LINK_BASE is not
equal to CONFIG_LINUX_RAM_BASE. This happens because we calculate
start of the reserved region relatively to the CONFIG_LINUX_RAM_BASE
and end of the region relatively to the CONFIG_LINUX_RAM_BASE.
For example in case of HSDK board we wasted 256MiB of physical memory:
------------------->8------------------------------
Memory: 770416K/1048576K available (5496K kernel code,
240K rwdata, 1064K rodata, 2200K init, 275K bss,
278160K reserved, 0K cma-reserved)
------------------->8------------------------------
Fix that.
Fixes: 9ed68785f7f2b ("ARC: mm: Decouple RAM base address from kernel link addr")
Cc: stable@vger.kernel.org #4.14+
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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This commit removes redundant generic-y defines in
arch/arc/include/asm/Kbuild.
It is redundant to define generic-y when arch-specific implementation
exists in arch/$(ARCH)/include/asm/*.h
Remove the following generic-y:
dma-mapping.h
fb.h
kmap_types.h
pci.h
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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| CC mm/nobootmem.o
|In file included from ./include/asm-generic/bug.h:18:0,
| from ./arch/arc/include/asm/bug.h:32,
| from ./include/linux/bug.h:5,
| from ./include/linux/mmdebug.h:5,
| from ./include/linux/gfp.h:5,
| from ./include/linux/slab.h:15,
| from mm/nobootmem.c:14:
|mm/nobootmem.c: In function '__free_pages_memory':
|./include/linux/kernel.h:845:29: warning: comparison of distinct pointer types lacks a cast
| (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
| ^
|./include/linux/kernel.h:859:4: note: in expansion of macro '__typecheck'
| (__typecheck(x, y) && __no_side_effects(x, y))
| ^~~~~~~~~~~
|./include/linux/kernel.h:869:24: note: in expansion of macro '__safe_cmp'
| __builtin_choose_expr(__safe_cmp(x, y), \
| ^~~~~~~~~~
|./include/linux/kernel.h:878:19: note: in expansion of macro '__careful_cmp'
| #define min(x, y) __careful_cmp(x, y, <)
| ^~~~~~~~~~~~~
|mm/nobootmem.c:104:11: note: in expansion of macro 'min'
| order = min(MAX_ORDER - 1UL, __ffs(start));
Change __ffs return value from 'int' to 'unsigned long' as it
is done in other implementations (like asm-generic, x86, etc...)
to avoid build-time warnings in places where type is strictly
checked.
As __ffs may return values in [0-31] interval changing return
type to unsigned is valid.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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This now prints the number of action points {2,4,8} and {min,full}
targets supported.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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Use the new of_get_compatible_child() helper to look up child nodes to
avoid ever matching non-child nodes elsewhere in the tree.
Also fix up the related struct device_node leaks.
Fixes: d8652956cf37 ("net: dsa: realtek-smi: Add Realtek SMI driver")
Cc: stable <stable@vger.kernel.org> # 4.19: 36156f9241cb0
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When lp55xx_read() fails, "status" is an uninitialized variable and thus
may contain random value; using it leads to undefined behaviors.
The fix inserts a check for the return value of lp55xx_read: if it
fails, returns with its error code.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
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in OF device ID table
Correct a typo in OF device ID table
The last one should be 'ti,tmp442'
Signed-off-by: Cheng-Min Ao <tony_ao@wiwynn.com>
Signed-off-by: Yu-Hsiang Chen <matt_chen@wiwynn.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Shifting the 1 by exp by an int can lead to sign-extension overlow when
exp is 31 since 1 is an signed int and sign-extending this result to an
unsigned long long will set the upper 32 bits. Fix this by shifting an
unsigned long.
Detected by cppcheck:
(warning) Shifting signed 32-bit value by 31 bits is undefined behaviour
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull AFS fixes from David Howells:
"Here's a set of fixes for AFS:
- Use struct_size() for kzalloc() size calculation.
- When calling YFS.CreateFile rather than AFS.CreateFile, it is
possible to create a file with a file lock already held. The
default value indicating no lock required is actually -1, not 0.
- Fix an oops in inode/vnode validation if the target inode doesn't
have a server interest assigned (ie. a server that will notify us
of changes by third parties).
- Fix refcounting of keys in file locking.
- Fix a race in refcounting asynchronous operations in the event of
an error during request transmission. The provision of a dedicated
function to get an extra ref on a call is split into a separate
commit"
* tag 'afs-fixes-20190117' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix race in async call refcounting
afs: Provide a function to get a ref on a call
afs: Fix key refcounting in file locking code
afs: Don't set vnode->cb_s_break in afs_validate()
afs: Set correct lock type for the yfs CreateFile
afs: Use struct_size() in kzalloc()
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git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
Pull swiotlb fix from Konrad Rzeszutek Wilk:
"A tiny fix for v5.0-rc2:
This fixes an issue with GPU cards not working anymore with the DMA
mapping work Christopher did - as the SWIOTLB is initialized first and
then free'd (as IOMMU is available) but we forgot to clear our start
and end entries which are used and BOOM"
* 'stable/for-linus-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
swiotlb: clear io_tlb_start and io_tlb_end in swiotlb_exit
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- clean generated files in scripts/kconfig/ by 'make mrproper'
- fix conflict between dead code elimination and ftrace for GCC <= 4.7
- fix external module build with CONFIG_STACKPROTECTOR
- remove unused code
* tag 'kbuild-fixes-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: mark prepare0 as PHONY to fix external module build
openrisc: remove unneeded code in arch/openrisc/Makefile
nds32: remove unneeded code in arch/nds32/Makefile
ia64: remove redundant 'export AWK'
kbuild: remove unused archmrproper
kbuild: remove unused baseprereq
kbuild: Disable LD_DEAD_CODE_DATA_ELIMINATION with ftrace & GCC <= 4.7
kconfig: clean generated *conf-cfg files
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull Devicetree fixes from Rob Herring:
- Remove now unused struct device_node.type pointer
- Fix meson-axg reset header SPDX tag
- Add missing of_node_put in of_graph_get_remote_port_parent
- Fix several binding doc file references and typos
* tag 'devicetree-fixes-for-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: reset: meson-axg: fix SPDX license id
dt-bindings: soc: qcom: Fix trivial language typos
doc: gpio-mvebu: fix broken reference to cp110-system-controller0.txt file
OF: properties: add missing of_node_put
doc: bindings: fix bad reference to ARM CPU bindings
dt-bindings: marvell,mmp2: fix typos in bindings doc
of: Remove struct device_node.type pointer
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In the face of missing user notification support, the self test needs
to stop executing a test (ASSERT_*) instead of just reporting and
continuing (EXPECT_*). This adjusts the user notification tests to do
that where needed.
Reported-by: Shuah Khan <shuah@kernel.org>
Fixes: 6a21cc50f0c7 ("seccomp: add a return code to trap to userspace")
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Tycho Andersen <tycho@tycho.ws>
Tested-by: Shuah Khan <shuah@kernel.org>
Signed-off-by: Shuah Khan <shuah@kernel.org>
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commit b05c950698fe ("pstore/ram: Simplify ramoops_get_next_prz()
arguments") changed update assignment in getting next persistent ram zone
by adding a check for record type. But the check always returns true since
the record type is assigned 0. And this breaks console ramoops by showing
current console log instead of previous log on warm reset and hard reset
(actually hard reset should not be showing any logs).
Fix this by having persistent ram zone type check instead of record type
check. Tested this on SDM845 MTP and dragonboard 410c.
Reproducing this issue is simple as below:
1. Trigger hard reset and mount pstore. Will see console-ramoops
record in the mounted location which is the current log.
2. Trigger warm reset and mount pstore. Will see the current
console-ramoops record instead of previous record.
Fixes: b05c950698fe ("pstore/ram: Simplify ramoops_get_next_prz() arguments")
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Acked-by: Joel Fernandes (Google) <joel@joelfernandes.org>
[kees: dropped local variable usage]
Signed-off-by: Kees Cook <keescook@chromium.org>
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There is a plan to build the kernel with -Wimplicit-fallthrough and
this place in the code produced a warnings (W=1).
To preserve as much of the existing comment only change a ‘:’ into a ‘,’.
This is enough change, to match the regular expression expected by GCC.
This commit removes the following warning:
net/core/filter.c:5310:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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There is a plan to build the kernel with -Wimplicit-fallthrough
and this place in the code produced a warnings (W=1).
This commit removes the following warning:
kernel/bpf/cgroup.c:719:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Initially in commit 69b693f0aefa ("bpf: btf: Introduce BPF Type Format
(BTF)") the function 'btf_name_offset_valid' was introduced as static
function it was later on changed to a non-static one, and then finally
in commit 23127b33ec80 ("bpf: Create a new btf_name_by_offset() for
non type name use case") the function prototype was removed.
Revert back to original implementation and make the function static.
Remove warning triggered with W=1:
kernel/bpf/btf.c:470:6: warning: no previous prototype for 'btf_name_offset_valid' [-Wmissing-prototypes]
Fixes: 23127b33ec80 ("bpf: Create a new btf_name_by_offset() for non type name use case")
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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While running test_progs in a loop I found out that I'm sometimes hitting
"Didn't find expected build ID from the map" error.
Looking at stack_map_get_build_id_offset() it seems that it is racy (by
design) and can sometimes return BPF_STACK_BUILD_ID_IP (i.e. can't trylock
current->mm->mmap_sem).
Let's retry this test a single time.
Fixes: 13790d1cc72c ("bpf: add selftest for stackmap with build_id in NMI context")
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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When returning BPF_STACK_BUILD_ID_IP from stack_map_get_build_id_offset,
make sure that build_id field is empty. Since we are using percpu
free list, there is a possibility that we might reuse some previous
bpf_stack_build_id with non-zero build_id.
Fixes: 615755a77b24 ("bpf: extend stackmap to save binary_build_id+offset instead of address")
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Build-id length is not fixed to 20, it can be (`man ld` /--build-id):
* 128-bit (uuid)
* 160-bit (sha1)
* any length specified in ld --build-id=0xhexstring
To fix the issue of missing BPF_STACK_BUILD_ID_VALID for shorter build-ids,
assume that build-id is somewhere in the range of 1 .. 20.
Set the remaining bytes to zero.
v2:
* don't introduce new "len = min(BPF_BUILD_ID_SIZE, nhdr->n_descsz)",
we already know that nhdr->n_descsz <= BPF_BUILD_ID_SIZE if we enter
this 'if' condition
Fixes: 615755a77b24 ("bpf: extend stackmap to save binary_build_id+offset instead of address")
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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There's a race between afs_make_call() and afs_wake_up_async_call() in the
case that an error is returned from rxrpc_kernel_send_data() after it has
queued the final packet.
afs_make_call() will try and clean up the mess, but the call state may have
been moved on thereby causing afs_process_async_call() to also try and to
delete the call.
Fix this by:
(1) Getting an extra ref for an asynchronous call for the call itself to
hold. This makes sure the call doesn't evaporate on us accidentally
and will allow the call to be retained by the caller in a future
patch. The ref is released on leaving afs_make_call() or
afs_wait_for_call_to_complete().
(2) In the event of an error from rxrpc_kernel_send_data():
(a) Don't set the call state to AFS_CALL_COMPLETE until *after* the
call has been aborted and ended. This prevents
afs_deliver_to_call() from doing anything with any notifications
it gets.
(b) Explicitly end the call immediately to prevent further callbacks.
(c) Cancel any queued async_work and wait for the work if it's
executing. This allows us to be sure the race won't recur when we
change the state. We put the work queue's ref on the call if we
managed to cancel it.
(d) Put the call's ref that we got in (1). This belongs to us as long
as the call is in state AFS_CALL_CL_REQUESTING.
Fixes: 341f741f04be ("afs: Refcount the afs_call struct")
Signed-off-by: David Howells <dhowells@redhat.com>
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Provide a function to get a reference on an afs_call struct.
Signed-off-by: David Howells <dhowells@redhat.com>
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Fix the refcounting of the authentication keys in the file locking code.
The vnode->lock_key member points to a key on which it expects to be
holding a ref, but it isn't always given an extra ref, however.
Fixes: 0fafdc9f888b ("afs: Fix file locking")
Signed-off-by: David Howells <dhowells@redhat.com>
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A cb_interest record is not necessarily attached to the vnode on entry to
afs_validate(), which can cause an oops when we try to bring the vnode's
cb_s_break up to date in the default case (ie. no current callback promise
and the vnode has not been deleted).
Fix this by simply removing the line, as vnode->cb_s_break will be set when
needed by afs_register_server_cb_interest() when we next get a callback
promise from RPC call.
The oops looks something like:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
...
RIP: 0010:afs_validate+0x66/0x250 [kafs]
...
Call Trace:
afs_d_revalidate+0x8d/0x340 [kafs]
? __d_lookup+0x61/0x150
lookup_dcache+0x44/0x70
? lookup_dcache+0x44/0x70
__lookup_hash+0x24/0xa0
do_unlinkat+0x11d/0x2c0
__x64_sys_unlink+0x23/0x30
do_syscall_64+0x4d/0xf0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fixes: ae3b7361dc0e ("afs: Fix validation/callback interaction")
Signed-off-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
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The disable_acs_redir parameter stores a pointer to the string passed to
pci_setup(). However, the string passed to PCI setup is actually a
temporary copy allocated in static __initdata memory. After init, once the
memory is freed, it is no longer valid to reference this pointer.
This bug was noticed in v5.0-rc1 after a change in commit c5eb1190074c
("PCI / PM: Allow runtime PM without callback functions") caused
pci_disable_acs_redir() to be called during shutdown which manifested
as an unable to handle kernel paging request at:
RIP: 0010:pci_enable_acs+0x3f/0x1e0
Call Trace:
pci_restore_state.part.44+0x159/0x3c0
pci_restore_standard_config+0x33/0x40
pci_pm_runtime_resume+0x2b/0xd0
? pci_restore_standard_config+0x40/0x40
__rpm_callback+0xbc/0x1b0
rpm_callback+0x1f/0x70
? pci_restore_standard_config+0x40/0x40
rpm_resume+0x4f9/0x710
? pci_conf1_read+0xb6/0xf0
? pci_conf1_write+0xb2/0xe0
__pm_runtime_resume+0x47/0x70
pci_device_shutdown+0x1e/0x60
device_shutdown+0x14a/0x1f0
kernel_restart+0xe/0x50
__do_sys_reboot+0x1ee/0x210
? __fput+0x144/0x1d0
do_writev+0x5e/0xf0
? do_writev+0x5e/0xf0
do_syscall_64+0x48/0xf0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
It was also likely possible to trigger this bug when hotplugging PCI
devices.
To fix this, instead of storing a pointer, we use kstrdup() to copy the
disable_acs_redir_param to its own buffer which will never be freed.
Fixes: aaca43fda742 ("PCI: Add "pci=disable_acs_redir=" parameter for peer-to-peer support")
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
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Commit c3ff2a5193fa ("powerpc/32: add stack protector support")
caused kernel panic on PowerPC when an external module is used with
CONFIG_STACKPROTECTOR because the 'prepare' target was not executed
for the external module build.
Commit e07db28eea38 ("kbuild: fix single target build for external
module") turned it into a build error because the 'prepare' target is
now executed but the 'prepare0' target is missing for the external
module build.
External module on arm/arm64 with CONFIG_STACKPROTECTOR_PER_TASK is
also broken in the same way.
Move 'PHONY += prepare0' to the common place. GNU Make is fine with
missing rule for phony targets. I also removed the comment which is
wrong irrespective of this commit.
I minimize the change so it can be easily backported to 4.20.x
To fix v4.20, please backport e07db28eea38 ("kbuild: fix single target
build for external module"), and then this commit.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=201891
Fixes: e07db28eea38 ("kbuild: fix single target build for external module")
Fixes: c3ff2a5193fa ("powerpc/32: add stack protector support")
Fixes: 189af4657186 ("ARM: smp: add support for per-task stack canaries")
Fixes: 0a1213fa7432 ("arm64: enable per-task stack canaries")
Cc: linux-stable <stable@vger.kernel.org> # v4.20
Reported-by: Samuel Holland <samuel@sholland.org>
Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
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- LDFLAGS_vmlinux is cleared by the top Makefile
- 'all: vmlinux' is specified by the top Makefile
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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- scripts/Kbuild.include already defined 'comma'
- The top Makefile has 'PHONY += FORCE'
- include/asm-*/ was moved to arch/*/include/asm/ a decade ago
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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There is a math problem here which leads to a lot of static checker
warnings for me:
net/sunrpc/clnt.c:451 rpc_new_client() error: (-4096) too low for ERR_PTR
Error values are from -1 to -4095 or from 0xffffffff to 0xfffff001 in
hexadecimal. (I am assuming a 32 bit system for simplicity). We are
using the lowest two bits to hold some internal XArray data so the
error is shifted two spaces to the left. 0xfffff001 << 2 is 0xffffc004.
And finally we want to check that BIT(1) is set so we add 2 which gives
us 0xffffc006.
In other words, we should be checking that "entry >= 0xffffc006", but
the check is actually testing if "entry >= 0xffffc002".
Fixes: 76b4e5299565 ("XArray: Permit storing 2-byte-aligned pointers")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
[Use xa_mk_internal() instead of changing the bracketing]
Signed-off-by: Matthew Wilcox <willy@infradead.org>
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drm-intel-fixes
gvt-fixes-2018-01-17
- Fix one register cmd parser failure (Colin)
- Fix region cleanup for vGPU destroy (Henry)
- Fix mmap size check (Zhenyu)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
From: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190117074604.GI18272@zhen-hp.sh.intel.com
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem fixes from James Morris:
"Fixes for the security subsystem.
The first (by Casey actually - it's misattributed) fixes a regression
introduced with the LSM stacking changes"
* 'fixes-v5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
LSM: Check for NULL cred-security on free
Yama: Check for pid death before checking ancestry
seccomp: fix UAF in user-trap code
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Failure __ip_append_data triggers udp_flush_pending_frames, but these
tests happen later. The skb must be freed directly.
Fixes: bec1f6f697362 ("udp: generate gso with UDP_SEGMENT")
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The section of bpfilter UMH blob is the ".bpfilter_umh". but this is not
an explicit section. so linking warning occurred at compile time for the
powerpc.
So, this patch makes use of the ".rodata" instead of the ".bpfilter_umh".
Config condition:
CONFIG_BPFILTER=y
CONFIG_BPFILTER_UMH=y
Result:
ld: warning: orphan section `.bpfilter_umh' from
`net/bpfilter/bpfilter_umh_blob.o' being placed in section `.bpfilter_umh'
Fixes: 61fbf5933d42 ("net: bpfilter: restart bpfilter_umh when error occurred")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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From: Casey Schaufler <casey@schaufler-ca.com>
Check that the cred security blob has been set before trying
to clean it up. There is a case during credential initialization
that could result in this.
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
Reported-by: syzbot+69ca07954461f189e808@syzkaller.appspotmail.com
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The bcm87xx and micrel driver has PHYs which are missing the .features
value. Add them. The bcm87xx is a 10G FEC only PHY. Add the needed
features definition of this PHY.
Fixes: 719655a14971 ("net: phy: Replace phy driver features u32 with link_mode bitmap")
Reported-by: Scott Wood <oss@buserror.net>
Reported-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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[Why]
Backlight is conceptually a property of links, not streams.
All backlight programming is done on links, but there is a
stream property bl_pwm_level that is used to restore backlight
on dpms on and s3 resume. This is unnecessary, as backlight
is already restored by hardware with no driver intervention.
[How]
Remove bl_pwm_level, and the stream argument to set_backlight
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=109375
Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 923fe4951282cbdfce05186c10380bbc45b5e03b)
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"IPv6: " prefix is already added by pr_fmt, no need to include
it again in the pr_warn() format. The message predates extack
support, we can replace the whole thing with an extack message.
Suggested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In iproute2 commit 90c5c969f0b9 ("fix print_0xhex on 32 bit"), the format
specifier for the ife type changed from 0x%X to %#llX, causing systematic
failures in the following TDC test cases:
7682 - Create valid ife encode action with mark and pass control
ef47 - Create valid ife encode action with mark and pipe control
df43 - Create valid ife encode action with mark and continue control
e4cf - Create valid ife encode action with mark and drop control
ccba - Create valid ife encode action with mark and reclassify control
a1cf - Create valid ife encode action with mark and jump control
cb3d - Create valid ife encode action with mark value at 32-bit maximum
95ed - Create valid ife encode action with prio and pass control
aa17 - Create valid ife encode action with prio and pipe control
74c7 - Create valid ife encode action with prio and continue control
7a97 - Create valid ife encode action with prio and drop control
f66b - Create valid ife encode action with prio and reclassify control
3056 - Create valid ife encode action with prio and jump control
7dd3 - Create valid ife encode action with prio value at 32-bit maximum
05bb - Create valid ife encode action with tcindex and pass control
ce65 - Create valid ife encode action with tcindex and pipe control
09cd - Create valid ife encode action with tcindex and continue control
8eb5 - Create valid ife encode action with tcindex and continue control
451a - Create valid ife encode action with tcindex and drop control
d76c - Create valid ife encode action with tcindex and reclassify control
e731 - Create valid ife encode action with tcindex and jump control
b7b8 - Create valid ife encode action with tcindex value at 16-bit maximum
2a9c - Create valid ife encode action with mac src parameter
cf5c - Create valid ife encode action with mac dst parameter
2353 - Create valid ife encode action with mac src and mac dst parameters
552c - Create valid ife encode action with mark and type parameters
0421 - Create valid ife encode action with prio and type parameters
4017 - Create valid ife encode action with tcindex and type parameters
fac3 - Create valid ife encode action with index at 32-bit maximnum
7c25 - Create valid ife decode action with pass control
dccb - Create valid ife decode action with pipe control
7bb9 - Create valid ife decode action with continue control
d9ad - Create valid ife decode action with drop control
219f - Create valid ife decode action with reclassify control
8f44 - Create valid ife decode action with jump control
b330 - Create ife encode action with cookie
Change 'matchPattern' values, allowing '0' and '0x0' if ife type is equal
to 0, and accepting both '0x' and '0X' otherwise, to let these tests pass
both with old and new tc binaries.
While at it, fix a small typo in test case fac3 ('maximnum'->'maximum').
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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With gcc 7.3.0:
gpio-mockup-chardev.c: In function ‘get_debugfs’:
gpio-mockup-chardev.c:62:3: warning: ignoring return value of ‘asprintf’, declared with attribute warn_unused_result [-Wunused-result]
asprintf(path, "%s/gpio", mnt_fs_get_target(fs));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Handle asprintf() failures to fix this.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Shuah Khan <shuah@kernel.org>
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This should be 1 for normal allocations, 0 disables leak reporting.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Reported-by: Cong Wang <xiyou.wangcong@gmail.com>
Fixes: 85704cb8dcfd ("net/core/neighbour: tell kmemleak about hash tables")
Signed-off-by: David S. Miller <davem@davemloft.net>
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The similar issue as fixed in Commit 4a2eb0c37b47 ("sctp: initialize
sin6_flowinfo for ipv6 addrs in sctp_inet6addr_event") also exists
in sctp_inetaddr_event, as Alexander noticed.
To fix it, allocate sctp_sockaddr_entry with kzalloc for both sctp
ipv4 and ipv6 addresses, as does in sctp_v4/6_copy_addrlist().
Reported-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reported-by: syzbot+ae0c70c0c2d40c51bb92@syzkaller.appspotmail.com
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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