From: bugzilla-daemon@kernel.org
To: linuxppc-dev@lists.ozlabs.org
Subject: [Bug 214913] [xfstests generic/051] BUG: Kernel NULL pointer dereference on read at 0x00000108 NIP [c0000000000372e4] tm_cgpr_active+0x14/0x40
Date: Mon, 12 Dec 2022 05:57:38 +0000 [thread overview]
Message-ID: <bug-214913-206035-9pRSjAqPTs@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-214913-206035@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=214913
--- Comment #9 from Michael Ellerman (michael@ellerman.id.au) ---
I assume it's an io_uring IO worker.
They're created via create_io_worker() -> create_io_thread().
They pass a non-NULL `args->fn` to copy_process() -> copy_thread(), so we end
up in the "kernel thread" branch of the if, which sets p->thread.regs = NULL.
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next prev parent reply other threads:[~2022-12-12 5:58 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-02 9:27 [Bug 214913] New: [xfstests generic/051] BUG: Kernel NULL pointer dereference on read at 0x00000108 NIP [c0000000000372e4] tm_cgpr_active+0x14/0x40 bugzilla-daemon
2021-11-02 9:29 ` [Bug 214913] " bugzilla-daemon
2021-11-04 5:45 ` bugzilla-daemon
2021-11-04 8:15 ` bugzilla-daemon
2021-11-05 11:53 ` bugzilla-daemon
2021-12-09 11:43 ` bugzilla-daemon
2022-12-11 13:13 ` bugzilla-daemon
2022-12-11 13:19 ` bugzilla-daemon
2022-12-12 3:52 ` Nicholas Piggin
2022-12-12 7:30 ` Christophe Leroy
2022-12-12 3:52 ` bugzilla-daemon
2022-12-12 5:57 ` bugzilla-daemon [this message]
2022-12-12 7:19 ` Nicholas Piggin
2022-12-12 7:19 ` bugzilla-daemon
2022-12-12 7:30 ` bugzilla-daemon
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