Code: a2 c7 05 1c fd 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:00007fff8e0b67e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f3236032050 RCX: 00007f3235f9d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff8e0b68a0
RBP: 00007fff8e0b68a0 R08: 00007fff8e0b78a0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8e0b7930
R13: 00007f3236032050 R14: 0000000000112335 R15: 00007fff8e0b7970
</TASK>
gfs2: fsid=syz:syz.0: about to withdraw this file system
------------[ cut here ]------------
kernel BUG at fs/gfs2/trans.c:324!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 17968 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:gfs2_trans_add_revoke+0xd1/0xe0 fs/gfs2/trans.c:324
Code: 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc cc 89 d9 80 e1 07 80 c1 03 38 c1 7c e3 48 89 df e8 37 2d 0a fe eb d9 e8 30 d2 a0 fd 90 <0f> 0b 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffc900065b7998 EFLAGS: 00010293
RAX: ffffffff84254920 RBX: ffff88802ffaf8f0 RCX: ffff88807decdb80
RDX: 0000000000000000 RSI: ffff8880596e6c40 RDI: ffff88807cb44000
RBP: ffff888034f550c0 R08: ffffffff90127bf7 R09: 1ffffffff2024f7e
R10: dffffc0000000000 R11: fffffbfff2024f7f R12: ffff8880596e6c58
R13: dffffc0000000000 R14: ffff8880596e6c40 R15: ffff88807cb44000
FS: 000055557d13e500(0000) GS:ffff888125442000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556d770a68 CR3: 00000000223dc000 CR4: 00000000003526f0
Call Trace:
<TASK>
__gfs2_ail_flush+0x12c/0x220 fs/gfs2/glops.c:78
gfs2_ail_flush+0xbd/0x100 fs/gfs2/glops.c:152
evict_linked_inode fs/gfs2/super.c:1397 [inline]
gfs2_evict_inode+0x743/0x12d0 fs/gfs2/super.c:1465
evict+0x61e/0xb10 fs/inode.c:846
gfs2_evict_inodes fs/gfs2/ops_fstype.c:1760 [inline]
gfs2_kill_sb+0x2bb/0x430 fs/gfs2/ops_fstype.c:1786
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:238 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:269 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:328 [inline]
do_syscall_64+0x33e/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3235f9d9d7
Code: a2 c7 05 1c fd 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:00007fff8e0b67e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f3236032050 RCX: 00007f3235f9d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff8e0b68a0
RBP: 00007fff8e0b68a0 R08: 00007fff8e0b78a0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8e0b7930
R13: 00007f3236032050 R14: 0000000000112335 R15: 00007fff8e0b7970
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gfs2_trans_add_revoke+0xd1/0xe0 fs/gfs2/trans.c:324
Code: 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc cc 89 d9 80 e1 07 80 c1 03 38 c1 7c e3 48 89 df e8 37 2d 0a fe eb d9 e8 30 d2 a0 fd 90 <0f> 0b 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffc900065b7998 EFLAGS: 00010293
RAX: ffffffff84254920 RBX: ffff88802ffaf8f0 RCX: ffff88807decdb80
RDX: 0000000000000000 RSI: ffff8880596e6c40 RDI: ffff88807cb44000
RBP: ffff888034f550c0 R08: ffffffff90127bf7 R09: 1ffffffff2024f7e
R10: dffffc0000000000 R11: fffffbfff2024f7f R12: ffff8880596e6c58
R13: dffffc0000000000 R14: ffff8880596e6c40 R15: ffff88807cb44000
FS: 000055557d13e500(0000) GS:ffff888125442000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556d770a68 CR3: 00000000223dc000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: a2 c7 05 1c fd 24 00 movabs %al,0x24fd1c05c7
7: 00 00
9: 00 00 add %al,(%rax)
b: eb 96 jmp 0xffffffa3
d: e8 e1 12 00 00 call 0x12f3
12: 90 nop
13: 31 f6 xor %esi,%esi
15: e9 09 00 00 00 jmp 0x23
1a: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1)
21: 00 00
23: b8 a6 00 00 00 mov $0xa6,%eax
28: 0f 05 syscall
* 2a: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction
30: 77 01 ja 0x33
32: c3 ret
33: 48 c7 c2 e8 ff ff ff mov $0xffffffffffffffe8,%rdx
3a: f7 d8 neg %eax
3c: 64 89 02 mov %eax,%fs:(%rdx)
3f: b8 .byte 0xb8