linux-kernel - Re: [syzbot] [ext4?] [mm?] INFO: rcu detected stall in ext4_release

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Message-ID: <66fc0fa0.050a0220.f28ec.04ab.GAE@google.com>
Date: Tue, 01 Oct 2024 08:05:04 -0700
From: syzbot <syzbot+9c703233282a4a1a6749@...kaller.appspotmail.com>
To: adilger.kernel@...ger.ca, andreyknvl@...il.com, dvyukov@...gle.com, 
	elver@...gle.com, glider@...gle.com, linux-ext4@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, peterz@...radead.org, 
	syzkaller-bugs@...glegroups.com, tglx@...utronix.de, tytso@....edu
Subject: Re: [syzbot] [ext4?] [mm?] INFO: rcu detected stall in
 ext4_release_file (2)

syzbot suspects this issue was fixed by commit:

commit ae94b263f5f69c180347e795fbefa051b65aacc3
Author: Dmitry Vyukov <dvyukov@...gle.com>
Date:   Tue Jun 11 07:50:33 2024 +0000

    x86: Ignore stack unwinding in KCOV

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17353dd0580000
start commit:   56fb6f92854f Merge tag 'drm-next-2024-05-25' of https://gi..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=966dbeb548ca6926
dashboard link: https://syzkaller.appspot.com/bug?extid=9c703233282a4a1a6749
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16e7abe0980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15b23f6c980000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: x86: Ignore stack unwinding in KCOV

For information about bisection process see: https://goo.gl/tpsmEJ#bisection