gfs2: fsid=syz:syz.0: first mount done, others may mount ------------[ cut here ]------------ BUG: Dentry ffff88805d0b5608{i=925,n=/} still in use (3) [unmount of gfs2 loop2] WARNING: CPU: 0 PID: 6401 at fs/dcache.c:1680 umount_check+0x186/0x1d0 fs/dcache.c:1672 Modules linked in: CPU: 0 PID: 6401 Comm: syz.2.117 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:umount_check+0x186/0x1d0 fs/dcache.c:1672 Code: ea ff 4d 8b 0f 49 81 c5 60 06 00 00 48 c7 c7 c0 cc b7 8a 48 89 de 4c 89 f2 48 89 d9 41 89 e8 41 55 e8 ae 99 5d ff 48 83 c4 08 <0f> 0b 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 89 f9 80 e1 07 80 c1 RSP: 0018:ffffc9000bc3f8f8 EFLAGS: 00010282 RAX: 10626b4a66306800 RBX: ffff88805d0b5608 RCX: 0000000000080000 RDX: ffffc9000d7fc000 RSI: 000000000002c064 RDI: 000000000002c065 RBP: 0000000000000003 R08: ffffc9000bc3f4e7 R09: 1ffff92001787e9c R10: dffffc0000000000 R11: fffff52001787e9d R12: dffffc0000000000 R13: ffff88802450c660 R14: 0000000000000925 R15: ffffffff8d2cb6c0 FS: 00007fda6ebdf6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ec23ffc CR3: 000000007ba90000 CR4: 00000000003526f0 Call Trace: d_walk+0x4c/0x700 fs/dcache.c:1367 do_one_tree+0x35/0xe0 fs/dcache.c:1687 shrink_dcache_for_umount+0x69/0x110 fs/dcache.c:1703 generic_shutdown_super+0x67/0x2b0 fs/super.c:665 kill_block_super+0x44/0x90 fs/super.c:1660 deactivate_locked_super+0x97/0x100 fs/super.c:481 gfs2_thaw_super+0x179/0x1e0 fs/gfs2/super.c:833 do_vfs_ioctl+0x1232/0x1bb0 fs/ioctl.c:-1 __do_sys_ioctl fs/ioctl.c:869 [inline] __se_sys_ioctl+0x83/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fda6dd8eec9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fda6ebdf038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fda6dfe5fa0 RCX: 00007fda6dd8eec9 RDX: 0000000000000000 RSI: 00000000c0045878 RDI: 0000000000000003 RBP: 00007fda6de11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fda6dfe6038 R14: 00007fda6dfe5fa0 R15: 00007ffca8354f78