ACK/Cmnt: [PATCH 0/1][linux-5.15] trace events WARN
Tim Gardner
tim.gardner at canonical.com
Mon Aug 29 12:37:26 UTC 2022
On 8/27/22 20:02, Krister Johansen wrote:
> Dear Ubuntu Kernel Team:
>
> I'm requesting a cherry-pick of a patch that has been merged to both Linus's
> tree and the 5.15 stable branches. It showed up for my team on
> linux-aws-5.15.0-1015, but I believe that it's common to all 5.15-based
> releases.
>
> This bug results in a WARN about an incorrect reference count if a program that
> is configuring uprobes receives a signal before it can complete the uprobe
> setup. I believe that I have followed the KernelPatches procedure documented
> here (https://wiki.ubuntu.com/Kernel/Dev/KernelPatches). I've tested this patch
> on an Ubuntu 5.15 branch as well as mainline.
>
> The issue is tracked in Launchpad as bug 1987232
> (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1987232)
>
> The impact for my team is that we see this WARN many times a day and it does get
> picked up by our logging that tracks potential kernel problems. If you'd be
> willing to target this at an upcoming 5.15 SRU release ahead of adopting the
> stable release that it's in right now, I'd be much obliged.
>
> Sincerely,
>
> -K
>
> Steven Rostedt (Google) (1):
> tracing/perf: Fix double put of trace event when init fails
>
> kernel/trace/trace_event_perf.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
Acked-by: Tim Gardner <tim.gardner at canonical.com>
Will also be included with v5.15.63 (whenever that gets applied)
--
-----------
Tim Gardner
Canonical, Inc
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