linux-kernel - Re: [syzbot] [mm?] possible deadlock in shmem_file_write

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Message-ID: <CAHQche8jUaarbLbMcQ10NXQrqAZSz6ibghML38c2fkXALpEoug@mail.gmail.com>
Date: Tue, 1 Oct 2024 07:52:27 +0800
From: Shu Han <ebpqwerty472123@...il.com>
To: syzbot <syzbot+288aa6838b3263f52e7e@...kaller.appspotmail.com>
Cc: akpm@...ux-foundation.org, hughd@...gle.com, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, paul@...l-moore.com, stephen.smalley.work@...il.com, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [mm?] possible deadlock in shmem_file_write_iter

It seems to be the same as [1].
Link: https://lore.kernel.org/lkml/20240928065620.7abadb2d8552f03d785c77c9@linux-foundation.org/
[1]

syzbot <syzbot+288aa6838b3263f52e7e@...kaller.appspotmail.com>
于2024年9月30日周一 14:51写道：
>
> syzbot has bisected this issue to:
>
> commit ea7e2d5e49c05e5db1922387b09ca74aa40f46e2
> Author: Shu Han <ebpqwerty472123@...il.com>
> Date:   Tue Sep 17 09:41:04 2024 +0000
>
>     mm: call the security_mmap_file() LSM hook in remap_file_pages()
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=110d4ea9980000
> start commit:   3efc57369a0c Merge tag 'for-linus' of git://git.kernel.org..
> git tree:       upstream
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=130d4ea9980000
> console output: https://syzkaller.appspot.com/x/log.txt?x=150d4ea9980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a4fcb065287cdb84
> dashboard link: https://syzkaller.appspot.com/bug?extid=288aa6838b3263f52e7e
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17af2980580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11607d9f980000
>
> Reported-by: syzbot+288aa6838b3263f52e7e@...kaller.appspotmail.com
> Fixes: ea7e2d5e49c0 ("mm: call the security_mmap_file() LSM hook in remap_file_pages()")
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection