Re: [syzbot] [overlayfs?] possible deadlock in seq_read_iter (2)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


On Wed, Dec 20, 2023 at 2:30 AM syzbot
<syzbot+da4f9f61f96525c62cc7@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> syzbot has bisected this issue to:
> commit 1e8c813b083c4122dfeaa5c3b11028331026e85d
> Author: Christoph Hellwig <hch@xxxxxx>
> Date:   Wed May 31 12:55:32 2023 +0000
>     PM: hibernate: don't use early_lookup_bdev in resume_store
> bisection log:
> start commit:   2cf4f94d8e86 Merge tag 'scsi-fixes' of git://git.kernel.or..
> git tree:       upstream
> final oops:
> console output:
> kernel config:
> dashboard link:
> syz repro:
> C reproducer:
> Reported-by: syzbot+da4f9f61f96525c62cc7@xxxxxxxxxxxxxxxxxxxxxxxxx
> Fixes: 1e8c813b083c ("PM: hibernate: don't use early_lookup_bdev in resume_store")

I'm not sure this bisection is reliable, so I wouldn't use this Fixes tag.
The reproducer may be a little flakey.

Anyway, this is just one of many problems, real or false positives,
related to the unholy dependency which sendfile() creates between
locks on two different filesystems.

I think those changes that are queued for 6.8 are going so fix this class
of problems:

#syz test:


[Index of Archives]     [Linux Filesystems Devel]     [Linux NFS]     [Linux NILFS]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux