From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f208.google.com (mail-il1-f208.google.com [209.85.166.208]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 28860194080 for ; Sat, 19 Apr 2025 08:36:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745051782; cv=none; b=Mv6xW5rHq+2wwP1L9fu8+AY0oVJXolxGs2JWj+YzvcILXFD85xDiuT5yVEYAVQ71cIrfyUKVwA9NK6qCXJRmoDoOG7MaxSP72C7OZy/ebDjAcE27QyTHlmA2riu+vNW1/cGojB6+05cZ0eeB8CY13eJBiEpykwtz/5l8RA16eP8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745051782; c=relaxed/simple; bh=2muuX7Ih62Wo7gja35Okue8CWnhgSewdoNusaP2V7P0=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=eICr1LZ8qZRdApH+eTu6/Bsrj0exf5ZpY4N0+pwsf5pAhO1NVTMMYtBFT8A0eNeXZJvD7arE9JKgwQfAfP7S+iJ54W1V5VAwrGx7b/3sDgFkcxLwhE/qCM5KxRFrqcsS7TvNHOZ3cp17d9UAia9RvsPQ3IvyvmOSXXMUWZg6Rf0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.208 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f208.google.com with SMTP id e9e14a558f8ab-3d458e61faaso24710335ab.0 for ; Sat, 19 Apr 2025 01:36:20 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1745051780; x=1745656580; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=viXqPNMRsD79f0RGNVXeE0kyOUVbU86j7clKbfA/SQM=; b=nNSAb8XjGI5rYgL39ml9JbbVfKLt5TEVS2YVRx1F0JuqqkmSakJ5ZP/RpFWv7xfQZ9 +IKKJmMFda/qAdHwcNoeBvb3JGmfITvT2DOl0qaOC03PK9aH4YE2ywBRs9g8tvLL90l0 2zK8cNDIBaGTez/FKHCZwIsY9XWLvO6VHTnMlHax8a5T7HXp9j2Shl3AKu5PJiIxr+u1 x42WwCPOdJ0l/pO4omjrGR0BbxbXY/Fw5NYbWtkJqmYeR51x/qiMEaXz/nST0DoOTAPU ghYX9Fzzsw9iYnt/Zyi6KxAZGVFP0e1VnqqUPpKt/obOhDn/scfBih0Jeemklw9ulwo9 AHLA== X-Forwarded-Encrypted: i=1; AJvYcCWS21qNJgho7uR3A30SDzDttC9h8o/RxQnUINDrgn9BQGhzXTUz1zJ3fko4G1vC80/owUangaxCaQMgrg==@vger.kernel.org X-Gm-Message-State: AOJu0Yxul66I6in1e29XhWM02E3QtG/mAnqavTRWQ0h91KH2XJb+qezl 8Rg2dbUOFDu9VG4f47P/bIrawm7XVhxAG195T+ttfVjodQn4Ww42iWHgrW7xujtG4Qqj/AJHg9f 7MPIpREIaJf5CBnvHI3YSGzXcgjGMCqo/soZFxO5Js5e2us0bQSujibk= X-Google-Smtp-Source: AGHT+IHkH/wwUf5d8lEEpuJxnz3SCVRu5KO/+QNvaticspBogfzuSTTlnBcBEi4bqi+Aeol4UGA5h8ZFt1vmaZ6fdEINgQ1UFwDV Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:b41:b0:3d5:890b:d9e1 with SMTP id e9e14a558f8ab-3d8b694907emr40125955ab.1.1745051780294; Sat, 19 Apr 2025 01:36:20 -0700 (PDT) Date: Sat, 19 Apr 2025 01:36:20 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68036084.050a0220.297747.0018.GAE@google.com> Subject: [syzbot] [block?] [bcachefs?] kernel panic: KASAN: panic_on_warn set ... From: syzbot To: brauner@kernel.org, jack@suse.cz, kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 3088d26962e8 Merge tag 'x86-urgent-2025-04-18' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17aed470580000 kernel config: https://syzkaller.appspot.com/x/.config?x=2a31f7155996562 dashboard link: https://syzkaller.appspot.com/bug?extid=4eb503ec2b8156835f24 compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-3088d269.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/5ec84510bfc9/vmlinux-3088d269.xz kernel image: https://storage.googleapis.com/syzbot-assets/af58d0bee0a4/bzImage-3088d269.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4eb503ec2b8156835f24@syzkaller.appspotmail.com Kernel panic - not syncing: KASAN: panic_on_warn set ... CPU: 0 UID: 0 PID: 47 Comm: kworker/u4:3 Not tainted 6.15.0-rc2-syzkaller-00400-g3088d26962e8 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: loop0 loop_workfn Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 panic+0x349/0x880 kernel/panic.c:354 check_panic_on_warn+0x86/0xb0 kernel/panic.c:243 end_report+0x77/0x160 mm/kasan/report.c:227 kasan_report+0x154/0x180 mm/kasan/report.c:636 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x28f/0x2a0 mm/kasan/generic.c:189 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_dec include/linux/atomic/atomic-instrumented.h:592 [inline] put_bh include/linux/buffer_head.h:301 [inline] end_buffer_read_sync+0xc1/0xd0 fs/buffer.c:161 end_bio_bh_io_sync+0xbf/0x120 fs/buffer.c:2748 blk_update_request+0x5e5/0x1160 block/blk-mq.c:983 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1145 lo_rw_aio_do_completion drivers/block/loop.c:317 [inline] lo_rw_aio_complete drivers/block/loop.c:325 [inline] lo_rw_aio+0xdfd/0xf80 drivers/block/loop.c:398 do_req_filebacked drivers/block/loop.c:-1 [inline] loop_handle_cmd drivers/block/loop.c:1866 [inline] loop_process_work+0x8e3/0x11f0 drivers/block/loop.c:1901 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319 worker_thread+0x870/0xd50 kernel/workqueue.c:3400 kthread+0x7b7/0x940 kernel/kthread.c:464 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup