[syzbot] [gfs2?] kernel BUG in gfs2_trans_add_revoke

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 785f0eb2f85d Add linux-next specific files for 20260320
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=11c08b52580000
kernel config: https://syzkaller.appspot.com/x/.config?x=c584910d0d74158d
dashboard link: https://syzkaller.appspot.com/bug?extid=b17a83b050e9617376f0
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/a1f7fd9c1a63/disk-785f0eb2.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/6c138da87c25/vmlinux-785f0eb2.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4d1be64e56db/bzImage-785f0eb2.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+b17a83...@syzkaller.appspotmail.com

RBP: 00007ffd277b4f80 R08: 00007ffd277b5f80 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd277b6010
R13: 00007fd855832050 R14: 000000000008c299 R15: 00007ffd277b6050
</TASK>
gfs2: fsid=syz:syz.0: about to withdraw this file system
------------[ cut here ]------------
kernel BUG at fs/gfs2/trans.c:321!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 9715 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:321
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 d7 80 0a fe eb d9 e8 a0 1a a1 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:ffffc90007607998 EFLAGS: 00010293
RAX: ffffffff842536e0 RBX: ffff88802a9439c0 RCX: ffff88802db05b80
RDX: 0000000000000000 RSI: ffff8880346d4070 RDI: ffff88807b910000
RBP: ffff88806a0ac650 R08: ffffffff90123cf7 R09: 1ffffffff202479e
R10: dffffc0000000000 R11: fffffbfff202479f R12: ffff8880346d4088
R13: dffffc0000000000 R14: ffff8880346d4070 R15: ffff88807b910000
FS: 0000555573c27500(0000) GS:ffff888125548000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ac2744a90 CR3: 0000000076a06000 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:1368 [inline]
gfs2_evict_inode+0x743/0x1130 fs/gfs2/super.c:1434
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:325 [inline]
do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd85579d9d7
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:00007ffd277b4ec8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fd855832050 RCX: 00007fd85579d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd277b4f80
RBP: 00007ffd277b4f80 R08: 00007ffd277b5f80 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd277b6010
R13: 00007fd855832050 R14: 000000000008c299 R15: 00007ffd277b6050
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gfs2_trans_add_revoke+0xd1/0xe0 fs/gfs2/trans.c:321
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 d7 80 0a fe eb d9 e8 a0 1a a1 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:ffffc90007607998 EFLAGS: 00010293
RAX: ffffffff842536e0 RBX: ffff88802a9439c0 RCX: ffff88802db05b80
RDX: 0000000000000000 RSI: ffff8880346d4070 RDI: ffff88807b910000
RBP: ffff88806a0ac650 R08: ffffffff90123cf7 R09: 1ffffffff202479e
R10: dffffc0000000000 R11: fffffbfff202479f R12: ffff8880346d4088
R13: dffffc0000000000 R14: ffff8880346d4070 R15: ffff88807b910000
FS: 0000555573c27500(0000) GS:ffff888125548000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ac2744a90 CR3: 0000000076a06000 CR4: 00000000003526f0


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