(jbd2/loop0-29,6882,0):ocfs2_abort_trigger:596 ERROR: ocfs2_abort_trigger called by JBD2. bh = 0xffff888079e70ae0, bh->b_blocknr = 16979 OCFS2: ERROR (device (efault)): void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *, struct buffer_head *): JBD2 has aborted our journal, ocfs2 cannot continue general protection fault, probably for non-canonical address 0xdffffc00000000cf: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000678-0x000000000000067f] CPU: 0 PID: 6882 Comm: jbd2/loop0-29 Not tainted 6.1.140-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:ocfs2_handle_error+0x2a/0x250 fs/ocfs2/super.c:2532 Code: 55 41 57 41 56 41 55 41 54 53 48 89 fb 49 bd 00 00 00 00 00 fc ff df e8 a4 33 7b f7 4c 8d b3 78 06 00 00 4c 89 f0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 f7 e8 87 a9 cc f7 4d 8b 26 4d 8d b4 24 RSP: 0018:ffffc90003b57748 EFLAGS: 00010206 RAX: 00000000000000cf RBX: 0000000000000000 RCX: ffff88802f9b5940 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90003b57890 R08: dffffc0000000000 R09: fffff5200076ae91 R10: fffff5200076ae91 R11: 1ffff9200076ae90 R12: ffffffff8aac5b00 R13: dffffc0000000000 R14: 0000000000000678 R15: 1ffff9200076aef8 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055558e8e85c8 CR3: 0000000023c08000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __ocfs2_error+0x124/0x170 fs/ocfs2/super.c:2575 ocfs2_abort_trigger+0xfc/0x130 fs/ocfs2/journal.c:598 jbd2_journal_commit_transaction+0x1314/0x60e0 fs/jbd2/commit.c:623 kjournald2+0x412/0x810 fs/jbd2/journal.c:210 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_handle_error+0x2a/0x250 fs/ocfs2/super.c:2532 Code: 55 41 57 41 56 41 55 41 54 53 48 89 fb 49 bd 00 00 00 00 00 fc ff df e8 a4 33 7b f7 4c 8d b3 78 06 00 00 4c 89 f0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 f7 e8 87 a9 cc f7 4d 8b 26 4d 8d b4 24 RSP: 0018:ffffc90003b57748 EFLAGS: 00010206 RAX: 00000000000000cf RBX: 0000000000000000 RCX: ffff88802f9b5940 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90003b57890 R08: dffffc0000000000 R09: fffff5200076ae91 R10: fffff5200076ae91 R11: 1ffff9200076ae90 R12: ffffffff8aac5b00 R13: dffffc0000000000 R14: 0000000000000678 R15: 1ffff9200076aef8 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f27dc37fab8 CR3: 000000005c7e2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 55 push %rbp 1: 41 57 push %r15 3: 41 56 push %r14 5: 41 55 push %r13 7: 41 54 push %r12 9: 53 push %rbx a: 48 89 fb mov %rdi,%rbx d: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 14: fc ff df 17: e8 a4 33 7b f7 call 0xf77b33c0 1c: 4c 8d b3 78 06 00 00 lea 0x678(%rbx),%r14 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 f7 mov %r14,%rdi 34: e8 87 a9 cc f7 call 0xf7cca9c0 39: 4d 8b 26 mov (%r14),%r12 3c: 4d rex.WRB 3d: 8d .byte 0x8d 3e: b4 24 mov $0x24,%ah