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gfs2: fsid=syz:syz.0: jid=0, already locked for use
gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
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kernel BUG at block/bio.c:346!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 786 Comm: kworker/0:2 Not tainted syzkaller #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: gfs2_recovery gfs2_recover_func
RIP: 0010:bio_chain+0xee/0x100 block/bio.c:346
Code: 43 1c 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 89 f9 80 e1 07 fe c1 38 c1 7c cf e8 da 43 bd fd eb c8 e8 93 99 55 fd 90 <0f> 0b e8 8b 99 55 fd 90 0f 0b 0f 1f 84 00 00 00 00 00 90 90 90 90
RSP: 0018:ffffc90001e3f540 EFLAGS: 00010293
RAX: ffffffff846b6dcd RBX: ffff88803358f500 RCX: ffff888000a824c0
RDX: 0000000000000000 RSI: ffff88803358f500 RDI: ffff88803132e640
RBP: 0000000000002004 R08: ffffffff84780ac0 R09: ffffffff8df41aa0
R10: dffffc0000000000 R11: ffffed10066b1eaf R12: dffffc0000000000
R13: 1ffff11006265cd0 R14: ffff88803132e640 R15: ffff88803132e680
FS:  0000000000000000(0000) GS:ffff88808d414000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbf40f909c0 CR3: 00000000113cd000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_chain_bio fs/gfs2/lops.c:487 [inline]
 gfs2_find_jhead+0x627/0xe40 fs/gfs2/lops.c:549
 gfs2_recover_func+0x5f5/0x1c90 fs/gfs2/recovery.c:459
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bio_chain+0xee/0x100 block/bio.c:346
Code: 43 1c 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 89 f9 80 e1 07 fe c1 38 c1 7c cf e8 da 43 bd fd eb c8 e8 93 99 55 fd 90 <0f> 0b e8 8b 99 55 fd 90 0f 0b 0f 1f 84 00 00 00 00 00 90 90 90 90
RSP: 0018:ffffc90001e3f540 EFLAGS: 00010293
RAX: ffffffff846b6dcd RBX: ffff88803358f500 RCX: ffff888000a824c0
RDX: 0000000000000000 RSI: ffff88803358f500 RDI: ffff88803132e640
RBP: 0000000000002004 R08: ffffffff84780ac0 R09: ffffffff8df41aa0
R10: dffffc0000000000 R11: ffffed10066b1eaf R12: dffffc0000000000
R13: 1ffff11006265cd0 R14: ffff88803132e640 R15: ffff88803132e680
FS:  0000000000000000(0000) GS:ffff88808d414000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbf40f909c0 CR3: 00000000559bb000 CR4: 0000000000352ef0