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From: y2k <y2k@desarrollaria.com>
To: oleg@redhat.com
Cc: brauner@kernel.org, linux-kernel@vger.kernel.org,
	syzkaller@googlegroups.com
Subject: Re: WARNING in do_notify_parent (kernel/signal.c:2174)
Date: Thu, 07 May 2026 18:00:04 +0200	[thread overview]
Message-ID: <9b025c57da794fba731182c0f19a3745.y2k@desarrollaria.com> (raw)

I noticed that commit 0f8e38eeb995 adds WARN_ON_ONCE for invalid signals
in do_notify_parent(). The syzkaller reproducer triggers this via
syz_clone() with CLONE_THREAD flags.

Could this be related to the ptrace path in exit.c:749 where
exit_signal=-1 (set for CLONE_THREAD processes) could reach
do_notify_parent() without a valid_signal() check?

Thanks,
y2k
y2k@desarrollaria.com

             reply	other threads:[~2026-05-07 16:05 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-07 16:00 y2k [this message]
  -- strict thread matches above, loose matches on Subject: below --
2026-05-07 15:45 y2k
2026-05-07 13:24 y2k
2026-05-09 10:37 ` Oleg Nesterov
2026-04-24 23:27 Jie Zhu

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