2021-11-28 16:37:54

by Thomas Gleixner

Subject: [GIT pull] perf/urgent for v5.16-rc3

Linus,

please pull the latest perf/urgent branch from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf-urgent-2021-11-28

up to: 73743c3b0922: perf: Ignore sigtrap for tracepoints destined for other tasks


A single fix for perf to prevent that it sends SIGTRAP to another task from
a trace point event as it's not possible to deliver a synchronous signal to
a different task from there.


Thanks,

tglx

------------------>
Marco Elver (1):
perf: Ignore sigtrap for tracepoints destined for other tasks


kernel/events/core.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 523106a506ee..30d94f68c5bd 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -9759,6 +9759,9 @@ void perf_tp_event(u16 event_type, u64 count, void *record, int entry_size,
continue;
if (event->attr.config != entry->type)
continue;
+ /* Cannot deliver synchronous signal to other task. */
+ if (event->attr.sigtrap)
+ continue;
if (perf_tp_event_match(event, &data, regs))
perf_swevent_event(event, count, &data, regs);
}

2021-11-28 17:56:39

by pr-tracker-bot

Subject: Re: [GIT pull] perf/urgent for v5.16-rc3

The pull request you sent on Sun, 28 Nov 2021 17:35:18 +0100 (CET):

> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf-urgent-2021-11-28

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/1ed1d3a3da224d8d2d82ad4a1f769a472a603e62

Thank you!

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