syzbot

R13: 00007f5010631f90 R14: 000000000001d53e R15: 00007fff7fa1e3c0
 </TASK>
gfs2: fsid=syz:syz.0: about to withdraw this file system
------------[ cut here ]------------
kernel BUG at fs/gfs2/super.c:76!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5932 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:gfs2_jindex_free+0x44e/0x450 fs/gfs2/super.c:76
Code: 23 22 ed fc cc 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c e2 fd ff ff e8 c2 92 0c fe e9 d8 fd ff ff e8 58 02 8a 07 e8 a3 6c a2 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6
RSP: 0018:ffffc90003227bc0 EFLAGS: 00010293
RAX: ffffffff84231f0d RBX: dead000000000122 RCX: ffff88802737dac0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: ffffc90003227c80 R08: ffff88803295ce37 R09: 1ffff1100652b9c6
R10: dffffc0000000000 R11: ffffed100652b9c7 R12: ffff88803295c908
R13: dffffc0000000000 R14: ffff8880690ee800 R15: ffff8880690ee878
FS:  0000555592a5c500(0000) GS:ffff888125464000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e1eaffee48 CR3: 000000007ca1d000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 gfs2_put_super+0x7d9/0x860 fs/gfs2/super.c:638
 generic_shutdown_super+0x13d/0x2d0 fs/super.c:646
 kill_block_super+0x44/0x90 fs/super.c:1725
 deactivate_locked_super+0xbc/0x130 fs/super.c:476
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f501059d9d7
Code: a2 c7 05 1c ed 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fff7fa1d238 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f5010631f90 RCX: 00007f501059d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff7fa1d2f0
RBP: 00007fff7fa1d2f0 R08: 00007fff7fa1e2f0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff7fa1e380
R13: 00007f5010631f90 R14: 000000000001d53e R15: 00007fff7fa1e3c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gfs2_jindex_free+0x44e/0x450 fs/gfs2/super.c:76
Code: 23 22 ed fc cc 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c e2 fd ff ff e8 c2 92 0c fe e9 d8 fd ff ff e8 58 02 8a 07 e8 a3 6c a2 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6
RSP: 0018:ffffc90003227bc0 EFLAGS: 00010293
RAX: ffffffff84231f0d RBX: dead000000000122 RCX: ffff88802737dac0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: ffffc90003227c80 R08: ffff88803295ce37 R09: 1ffff1100652b9c6
R10: dffffc0000000000 R11: ffffed100652b9c7 R12: ffff88803295c908
R13: dffffc0000000000 R14: ffff8880690ee800 R15: ffff8880690ee878
FS:  0000555592a5c500(0000) GS:ffff888125564000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e1eb0090f0 CR3: 000000007ca1d000 CR4: 0000000000350ef0