From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8AB7228F5 for ; Tue, 26 Nov 2024 14:51:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732632673; cv=none; b=Uis6YKtnq34EF4Hq1CnhjylvaEfdT34D1yM1q+f3sXJ/hcGgJRs0jywLinHhn9iClvBYj1xfrKjPzvIqHUdbG9w7Szh43iZ4mLB1N9p7dmG7EibHHQ5z1mo600dbXTPVHYSYYie+be6BHNgCQfeLDdsrtnOMaWsMWsRBGou+Sow= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732632673; c=relaxed/simple; bh=9ofGJOnVnXlwCy3x6i6NllQzH6agqh53YuhWlcN/ByI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=d8Fq0AWv478So0vcM3iwqPJRYIO96hBLbkIrhZrjLJ9YjGuIYl5fisYGoRjqX3TkorTDXnpxSnOxAazKL18wkre9u4Z5tDLXre74PTt+X39Swd/TB9Zq+eNldoPRv68fNTEB5orhTjVhWh5yzRb/PXodVl7eTCbb2+LDIdH8218= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=jE5VOyKp; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=SMAlfStE; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="jE5VOyKp"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="SMAlfStE" Date: Tue, 26 Nov 2024 15:51:08 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1732632669; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=vVSDCCDMTFkX5gNjADWJWeRq6cvvlxZJxWMO0JTKp+0=; b=jE5VOyKpgSM8a9Yq0mQJBdhoJDzaJQaDh5Gotn+00kPQABmGR4VVvigSq2k+nIj6ndr7R5 yQ9Sm3PHX05DMDfHnWqLtJ6Y9leOKTpLBaXG4WfLpipnmLObN2FaJ+Nl5hctmk7OQjMWbo wXDAYqqTTSB2ZKo3GLempGeK6JWyN7HHlqONq4dumjQl9teQlAosHNhryep21DSlkl8LqQ qcZAsXUi5gAhLeZmWKRa15vLpDv/gY1DQnJuvI5VqqG11xQTHKjAAFPm3TGjaRo+3FMroX 6AcgRlG9sri1AKB+mXLXIb3P+DibrwtGrmhcwQMspUNk3I9dc99+zMfq/09JDw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1732632669; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=vVSDCCDMTFkX5gNjADWJWeRq6cvvlxZJxWMO0JTKp+0=; b=SMAlfStEkjshJxUNNAAiS0pp5WjlhHweA2kJUZR/SABvSob0TH2YexbCJZRfkdCDduUwUQ 5JQx4RYFD6BaZeAA== From: Sebastian Andrzej Siewior To: syzbot Cc: Jason@zx2c4.com, boqun.feng@gmail.com, hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tytso@mit.edu Subject: Re: [syzbot] [kernel?] WARNING: locking bug in get_random_u8 Message-ID: <20241126145108.49mT4Lc9@linutronix.de> References: <6738c3ba.050a0220.bb738.000d.GAE@google.com> <67447073.050a0220.1cc393.007b.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <67447073.050a0220.1cc393.007b.GAE@google.com> 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@syzkaller.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