linux-kernel - Re: [syzbot] [kernel?] WARNING: locking bug in get_random

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Message-ID: <20241126145108.49mT4Lc9@linutronix.de>
Date: Tue, 26 Nov 2024 15:51:08 +0100
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: syzbot <syzbot+7f4f9a43a9c78eaee04f@...kaller.appspotmail.com>
Cc: Jason@...c4.com, boqun.feng@...il.com, hdanton@...a.com,
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com,
	tytso@....edu
Subject: Re: [syzbot] [kernel?] WARNING: locking bug in get_random_u8

On 2024-11-25 04:41:23 [-0800], syzbot wrote:
> syzbot has found a reproducer for the following issue on:
> 
> HEAD commit:    9f16d5e6f220 Merge tag 'for-linus' of git://git.kernel.org..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=16ee775f980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=d8bc8a5565eebec6
> dashboard link: https://syzkaller.appspot.com/bug?extid=7f4f9a43a9c78eaee04f
> compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1612dee8580000
> 
> Downloadable assets:
> disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-9f16d5e6.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/dbaabe559df8/vmlinux-9f16d5e6.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/5fe0afceb260/bzImage-9f16d5e6.xz
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+7f4f9a43a9c78eaee04f@...kaller.appspotmail.com

#syz fix: kasan: Make kasan_record_aux_stack_noalloc() the default behaviour
#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/bigeasy/staging.git 5cb0bc2a8ec81da5d1af5de29a6549c66c9254ad

Sebastian