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Message-ID: <0000000000000aeb7f06015e5cbd@google.com>
Date: Tue, 25 Jul 2023 23:57:22 -0700
From: syzbot <syzbot+8645fe63c4d22c8d27b8@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, liam.howlett@...cle.com,
linux-kernel@...r.kernel.org, linux-mm@...ck.org,
syzkaller-bugs@...glegroups.com, willy@...radead.org
Subject: Re: [syzbot] [mm?] WARNING: suspicious RCU usage in mas_walk (2)
syzbot has bisected this issue to:
commit a52f58b34afe095ebc5823684eb264404dad6f7b
Author: Matthew Wilcox (Oracle) <willy@...radead.org>
Date: Mon Jul 24 18:54:10 2023 +0000
mm: handle faults that merely update the accessed bit under the VMA lock
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1783585ea80000
start commit: [unknown]
git tree: linux-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=1443585ea80000
console output: https://syzkaller.appspot.com/x/log.txt?x=1043585ea80000
kernel config: https://syzkaller.appspot.com/x/.config?x=f481ab36ce878b84
dashboard link: https://syzkaller.appspot.com/bug?extid=8645fe63c4d22c8d27b8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1697cec9a80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1566986ea80000
Reported-by: syzbot+8645fe63c4d22c8d27b8@...kaller.appspotmail.com
Fixes: a52f58b34afe ("mm: handle faults that merely update the accessed bit under the VMA lock")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
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