linux-kernel - [syzbot] [bcachefs?] kernel panic: bcachefs (loop0): panic after error

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Message-ID: <67282553.050a0220.35b515.01aa.GAE@google.com>
Date: Sun, 03 Nov 2024 17:37:23 -0800
From: syzbot <syzbot+4c6e722ab29ba1d06b19@...kaller.appspotmail.com>
To: kent.overstreet@...ux.dev, linux-bcachefs@...r.kernel.org, 
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [bcachefs?] kernel panic: bcachefs (loop0): panic after error

Hello,

syzbot found the following issue on:

HEAD commit:    4236f913808c Merge tag 'scsi-fixes' of git://git.kernel.or..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=116da55f980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=4aec7739e14231a7
dashboard link: https://syzkaller.appspot.com/bug?extid=4c6e722ab29ba1d06b19
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1792c630580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=156da55f980000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-4236f913.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/ca5604c008a4/vmlinux-4236f913.xz
kernel image: https://storage.googleapis.com/syzbot-assets/34ea5692a94f/bzImage-4236f913.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/8ac365f356c8/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+4c6e722ab29ba1d06b19@...kaller.appspotmail.com

bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=panic,metadata_checksum=crc64,data_checksum=none,compression=lz4,background_compression=gzip,no_splitbrain_check,nocow
superblock marked clean but clean section not present, shutting down
Kernel panic - not syncing: bcachefs (loop0): panic after error
CPU: 0 UID: 0 PID: 5308 Comm: syz-executor415 Not tainted 6.12.0-rc5-syzkaller-00047-g4236f913808c #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __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
 bch2_inconsistent_error+0x146/0x150 fs/bcachefs/error.c:26
 __bch2_fsck_err+0x10ee/0x1570 fs/bcachefs/error.c:425
 bch2_read_superblock_clean+0x3b4/0x520 fs/bcachefs/sb-clean.c:152
 bch2_fs_recovery+0x1f4/0x39c0 fs/bcachefs/recovery.c:640
 bch2_fs_start+0x356/0x5b0 fs/bcachefs/super.c:1036
 bch2_fs_get_tree+0xd68/0x1710 fs/bcachefs/fs.c:2170
 vfs_get_tree+0x90/0x2b0 fs/super.c:1800
 do_new_mount+0x2be/0xb40 fs/namespace.c:3507
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7d3c001eba
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffe9e18a88 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fffe9e18aa0 RCX: 00007f7d3c001eba
RDX: 00000000200058c0 RSI: 0000000020000100 RDI: 00007fffe9e18aa0
RBP: 0000000000000004 R08: 00007fffe9e18ae0 R09: 0000000000005951
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000
R13: 00007fffe9e18ae0 R14: 0000000000000003 R15: 0000000001000000
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..


---
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