From: bugzilla-daemon@bugzilla.kernel.org
To: linux-ext4@vger.kernel.org
Subject: [Bug 208173] BUG: using smp_processor_id() in preemptible, caller is ext4_mb_new_blocks
Date: Mon, 15 Jun 2020 00:40:38 +0000 [thread overview]
Message-ID: <bug-208173-13602-y0eoQep2Ar@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-208173-13602@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=208173
--- Comment #3 from Tom Seewald (tseewald@gmail.com) ---
After looking around, syzkaller already found this bug [1], and a fix was
already posted [2] but Linus didn't pull it before tagging the rc1 release.
I manually applied commit 811985365378df01386c3cfb7ff716e74ca376d5 ("ext4:
mballoc: Use this_cpu_read instead of this_cpu_ptr") from
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git, and I can
confirm that this fixes the problem. Hopefully this makes it in by rc2.
I'll close this report once Linus pulls the fix.
[1]
https://syzkaller.appspot.com/bug?id=b7f459091a40a67a13f27d2281281ffd0ed8e5e1
[2] https://lore.kernel.org/lkml/20200614200034.GA3294624@mit.edu/T/
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prev parent reply other threads:[~2020-06-15 0:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-15 0:10 [Bug 208173] New: BUG: using smp_processor_id() in preemptible, caller is ext4_mb_new_blocks bugzilla-daemon
2020-06-15 0:11 ` [Bug 208173] " bugzilla-daemon
2020-06-15 0:22 ` bugzilla-daemon
2020-06-15 0:40 ` bugzilla-daemon [this message]
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