gfs2: fsid=syz:syz.0: jid=0, already locked for use gfs2: fsid=syz:syz.0: jid=0: Looking at journal... ------------[ cut here ]------------ kernel BUG at block/bio.c:342! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 912 Comm: kworker/1:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: gfs2_recovery gfs2_recover_func RIP: 0010:bio_chain+0xee/0x100 block/bio.c:342 Code: 43 1c 5b 41 5c 41 5d 41 5e 41 5f 5d e9 1b e1 f2 06 cc 89 f9 80 e1 07 fe c1 38 c1 7c cf e8 aa fc bd fd eb c8 e8 d3 a8 57 fd 90 <0f> 0b e8 cb a8 57 fd 90 0f 0b 0f 1f 84 00 00 00 00 00 90 90 90 90 RSP: 0018:ffffc90003d07540 EFLAGS: 00010293 RAX: ffffffff846a0a5d RBX: ffff8880207223c0 RCX: ffff888025b49e80 RDX: 0000000000000000 RSI: ffff8880207223c0 RDI: ffff888020722500 RBP: 0000000000002004 R08: ffffffff8476a450 R09: ffffffff8df419e0 R10: dffffc0000000000 R11: ffffed10040e4487 R12: dffffc0000000000 R13: 1ffff110040e44a8 R14: ffff888020722500 R15: ffff888020722540 FS: 0000000000000000(0000) GS:ffff888125f49000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff5e0f43000 CR3: 0000000073e76000 CR4: 00000000003526f0 Call Trace: 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+0x93a/0x15a0 kernel/workqueue.c:3261 process_scheduled_works kernel/workqueue.c:3344 [inline] worker_thread+0x9b0/0xee0 kernel/workqueue.c:3425 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bio_chain+0xee/0x100 block/bio.c:342 Code: 43 1c 5b 41 5c 41 5d 41 5e 41 5f 5d e9 1b e1 f2 06 cc 89 f9 80 e1 07 fe c1 38 c1 7c cf e8 aa fc bd fd eb c8 e8 d3 a8 57 fd 90 <0f> 0b e8 cb a8 57 fd 90 0f 0b 0f 1f 84 00 00 00 00 00 90 90 90 90 RSP: 0018:ffffc90003d07540 EFLAGS: 00010293 RAX: ffffffff846a0a5d RBX: ffff8880207223c0 RCX: ffff888025b49e80 RDX: 0000000000000000 RSI: ffff8880207223c0 RDI: ffff888020722500 RBP: 0000000000002004 R08: ffffffff8476a450 R09: ffffffff8df419e0 R10: dffffc0000000000 R11: ffffed10040e4487 R12: dffffc0000000000 R13: 1ffff110040e44a8 R14: ffff888020722500 R15: ffff888020722540 FS: 0000000000000000(0000) GS:ffff888125f49000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563e2b893950 CR3: 0000000026910000 CR4: 00000000003526f0