linux-kernel - Re: [syzbot] [ext4?] KASAN: slab-use-after-free Read in fsnotify

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Date: Tue, 16 Apr 2024 19:03:02 -0700
From: syzbot <syzbot+5e3f9b2a67b45f16d4e6@...kaller.appspotmail.com>
To: amir73il@...il.com, hdanton@...a.com, jack@...e.cz, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [ext4?] KASAN: slab-use-after-free Read in fsnotify

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

failed to apply patch:
checking file fs/notify/fsnotify.c
Hunk #1 FAILED at 103.
Hunk #2 succeeded at 510 (offset 4 lines).
Hunk #3 succeeded at 540 (offset 4 lines).
Hunk #4 succeeded at 569 (offset 4 lines).
1 out of 4 hunks FAILED
checking file include/linux/fsnotify_backend.h

Tested on:

commit:         2f012b22 fsnotify: fix UAF from FS_ERROR event on a sh..
git tree:       https://github.com/amir73il/linux fsnotify-fixes
kernel config:  https://syzkaller.appspot.com/x/.config?x=16ca158ef7e08662
dashboard link: https://syzkaller.appspot.com/bug?extid=5e3f9b2a67b45f16d4e6
compiler:       
patch:          https://syzkaller.appspot.com/x/patch.diff?x=10103657180000