Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Barret Rhoden 9bf3b3649d perf: Add cond_resched() to task_function_call() ... commit 2ed6edd33a214bca02bd2b45e3fc3038a059436b upstream. Under rare circumstances, task_function_call() can repeatedly fail and cause a soft lockup. There is a slight race where the process is no longer running on the cpu we targeted by the time remote_function() runs. The code will simply try again. If we are very unlucky, this will continue to fail, until a watchdog fires. This can happen in a heavily loaded, multi-core virtual machine. Reported-by: syzbot+bb4935a5c09b5ff79940@syzkaller.appspotmail.com Signed-off-by: Barret Rhoden <brho@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200414222920.121401-1-brho@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-06-20 10:24:13 +02:00
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callchain.c	perf: Remove superfluous allocation error check	2018-05-16 10:08:41 +02:00
core.c	perf: Add cond_resched() to task_function_call()	2020-06-20 10:24:13 +02:00
hw_breakpoint.c	perf/hwbp: Simplify the perf-hwbp code, fix documentation	2018-04-08 12:12:41 +02:00
internal.h	bpf, events: fix offset in skb copy handler	2016-07-25 10:34:11 -07:00
Makefile	ftrace: allow architectures to specify ftrace compile options	2015-01-29 09:19:19 +01:00
ring_buffer.c	perf/ring_buffer: Add ordering to rb->nest increment	2019-06-22 08:17:23 +02:00
uprobes.c	uprobes: ensure that uprobe->offset and ->ref_ctr_offset are properly aligned	2020-06-11 09:22:23 +02:00