linux-kernel - Re: [syzbot] [ext4?] KASAN: use-after-free Read in __ext4_check_dir

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Date: Wed, 26 Jun 2024 00:55:02 -0700
From: syzbot <syzbot+11af34d3c0711f233fd4@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, norbert.kaminski@...ogain.com, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [ext4?] KASAN: use-after-free Read in
 __ext4_check_dir_entry (2)

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
SYZFAIL: NL802154_CMD_SET_SHORT_ADDR failed

2024/06/26 07:54:36 ignoring optional flag "sandboxArg"="0"
2024/06/26 07:54:37 parsed 1 programs
2024/06/26 07:54:37 [FATAL] failed to run ["./syz-executor" "setup" "fault" "binfmt_misc" "usb" "802154" "swap"]: exit status 67
mkdir(/syzcgroup) failed: 17
mount(binfmt_misc) failed: 16
SYZFAIL: NL802154_CMD_SET_SHORT_ADDR failed
 (errno 16: Device or resource busy)

Tested on:

commit:         55027e68 Merge tag 'input-for-v6.10-rc5' of git://git...
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=1000b3b6980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=7bff6f9b539bef0c
dashboard link: https://syzkaller.appspot.com/bug?extid=11af34d3c0711f233fd4
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.