From: Madhavan Srinivasan <maddy@linux.ibm.com>
To: tglx@kernel.org, linuxppc-dev@lists.ozlabs.org,
Shrikanth Hegde <sshegde@linux.ibm.com>
Cc: linux-kernel@vger.kernel.org, chleroy@kernel.org,
sbhat@linux.ibm.com, mkchauras@gmail.com
Subject: Re: [PATCH] powerpc/entry: Clear TIF_SYSCALL_RET before syscall error return
Date: Wed, 9 Sep 2026 11:48:44 +0530 [thread overview]
Message-ID: <178893459265.174069.668944164131216470.b4-ty@linux.ibm.com> (raw)
In-Reply-To: <20260828053811.1042300-1-sshegde@linux.ibm.com>
On Fri, 28 Aug 2026 11:08:11 +0530, Shrikanth Hegde wrote:
> Shivaprasad reported a boot failure due to userspace processes crash on
> abort() from libc.so.6. It was bisected to merge request
> commit '3424d8c18a7d ("Merge tag 'core-entry-2026-08-17' of
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip")'
>
> Upon checking the merge, when syscall_enter_from_user_mode_randomize_stack
> fails, which could happen when a tracer like seccomp or ptrace intercepts
> and skips the syscall, the code returns to userspace immediately without
> clearing the intermediate flag which was set.
>
> [...]
Applied to powerpc/fixes.
[1/1] powerpc/entry: Clear TIF_SYSCALL_RET before syscall error return
https://git.kernel.org/powerpc/c/2c1dde8a69a3a7d64425a6de0add6e289a5a402f
cheers
prev parent reply other threads:[~2026-09-09 6:18 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-28 5:38 Shrikanth Hegde
2026-08-29 6:01 ` Shivaprasad G Bhat
2026-08-31 4:39 ` Mukesh Kumar Chaurasiya
2026-08-31 9:04 ` Shrikanth Hegde
2026-09-01 7:13 ` Mukesh Kumar Chaurasiya
2026-09-01 9:17 ` Venkat
2026-09-09 6:18 ` Madhavan Srinivasan [this message]
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