RBP: 0000200000000000 R08: 00007f3de808eef0 R09: 0000000000200001 R10: 0000000000200001 R11: 0000000000000246 R12: 0000200000012500 R13: 00007f3de808eeb0 R14: 00000000000125bf R15: 0000200000000680 gfs2: fsid=syz:syz.0: about to withdraw this file system gfs2: fsid=syz:syz.0: can't lookup journal index: 0 ------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff888106b70598 object type: work_struct hint: gfs2_withdraw_func+0x0/0x790 fs/gfs2/util.c:-1 WARNING: CPU: 1 PID: 3678 at lib/debugobjects.c:615 debug_print_object lib/debugobjects.c:612 [inline] WARNING: CPU: 1 PID: 3678 at lib/debugobjects.c:615 __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline] WARNING: CPU: 1 PID: 3678 at lib/debugobjects.c:615 debug_check_no_obj_freed+0x20f/0x290 lib/debugobjects.c:1129 Modules linked in: CPU: 1 UID: 0 PID: 3678 Comm: syz.3.23 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:debug_print_object lib/debugobjects.c:612 [inline] RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:1099 [inline] RIP: 0010:debug_check_no_obj_freed+0x20f/0x290 lib/debugobjects.c:1129 Code: 8b 4d 00 48 c7 c7 ba d0 47 83 48 c7 c6 19 08 3f 83 48 c7 c2 bb 14 40 83 8b 4c 24 0c 4d 89 e0 50 e8 96 8c 74 ff 48 83 c4 08 90 <0f> 0b 90 90 ff 05 e3 b4 1d 02 4c 8b 5d 30 4d 85 db 74 18 4c 89 e7 RSP: 0018:ffffc90001d2bc78 EFLAGS: 00010286 RAX: 4b6b7d8f13c33600 RBX: ffff888106b72000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: 00000000ffffdfff RDI: 00000000ffffffff RBP: ffffffff82c11ac0 R08: 0000000000001fff R09: ffffffff838fee80 R10: 0000000000005ffd R11: 00000000ffffdfff R12: ffff888106b70598 R13: ffff888106b70000 R14: ffff888106b70000 R15: dead000000000100 FS: 00007f3de808f6c0(0000) GS:ffff8882b351a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3de71722e0 CR3: 0000000106bb8000 CR4: 00000000003506f0 Call Trace: slab_free_hook mm/slub.c:2454 [inline] slab_free mm/slub.c:6611 [inline] kfree+0x10f/0x5c0 mm/slub.c:6818 free_sbd fs/gfs2/ops_fstype.c:71 [inline] gfs2_fill_super+0x811/0xb10 fs/gfs2/ops_fstype.c:1324 get_tree_bdev_flags+0x13c/0x1c0 fs/super.c:1691 gfs2_get_tree+0x20/0x90 fs/gfs2/ops_fstype.c:1340 vfs_get_tree+0x29/0xf0 fs/super.c:1751 fc_mount fs/namespace.c:1208 [inline] do_new_mount_fc fs/namespace.c:3651 [inline] do_new_mount+0x168/0x3b0 fs/namespace.c:3727 do_mount fs/namespace.c:4050 [inline] __do_sys_mount fs/namespace.c:4238 [inline] __se_sys_mount+0x144/0x1b0 fs/namespace.c:4215 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0x2f0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3de719076a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3de808ee68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f3de808eef0 RCX: 00007f3de719076a RDX: 0000200000000000 RSI: 0000200000012500 RDI: 00007f3de808eeb0 RBP: 0000200000000000 R08: 00007f3de808eef0 R09: 0000000000200001 R10: 0000000000200001 R11: 0000000000000246 R12: 0000200000012500 R13: 00007f3de808eeb0 R14: 00000000000125bf R15: 0000200000000680