gfs2: fsid=syz:syz.0: first mount done, others may mount gfs2: fsid=syz:syz.0: found 1 quota changes BUG: Dentry 00000000ae11e59d{i=925,n=/} still in use (5) [unmount of gfs2 loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5102 at fs/dcache.c:1681 umount_check+0x180/0x1bc fs/dcache.c:1672 Modules linked in: CPU: 0 PID: 5102 Comm: syz.0.190 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : umount_check+0x180/0x1bc fs/dcache.c:1672 lr : umount_check+0x180/0x1bc fs/dcache.c:1672 sp : ffff800021c477a0 x29: ffff800021c477a0 x28: ffff0000e14b7608 x27: ffff800021c47a40 x26: dfff800000000000 x25: dfff800000000000 x24: ffff0000fd4e4000 x23: dfff800000000000 x22: ffff8000157fe9a0 x21: 0000000000000005 x20: 0000000000000925 x19: ffff0000e14b7608 x18: 0000000000000000 x17: 756f6d6e755b2029 x16: ffff8000082d22e0 x15: 0000000000000002 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000080000 x11: 0000000000005146 x10: ffff8000224f9000 x9 : 84b2d21218383d00 x8 : 84b2d21218383d00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800021c47278 x4 : ffff8000151a4820 x3 : ffff80000a84556c x2 : ffff00019f6bcd10 x1 : 0000000100000001 x0 : 0000000000000051 Call trace: umount_check+0x180/0x1bc fs/dcache.c:1672 d_walk+0x68/0x654 fs/dcache.c:1367 do_one_tree+0x40/0xf0 fs/dcache.c:1688 shrink_dcache_for_umount+0x68/0x114 fs/dcache.c:1704 generic_shutdown_super+0x68/0x324 fs/super.c:473 kill_block_super+0x70/0xdc fs/super.c:1470 gfs2_kill_sb+0xc0/0xd4 fs/gfs2/ops_fstype.c:-1 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xe8/0x108 fs/super.c:363 gfs2_thaw_super+0x184/0x254 fs/gfs2/super.c:828 do_vfs_ioctl+0xfb4/0x206c fs/ioctl.c:-1 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 123498 hardirqs last enabled at (123497): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (123498): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (123452): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (123450): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- BUG: Dentry 00000000ae11e59d{i=925,n=/} still in use (5) [unmount of gfs2 loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5102 at fs/dcache.c:1681 umount_check+0x180/0x1bc fs/dcache.c:1672 Modules linked in: CPU: 0 PID: 5102 Comm: syz.0.190 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : umount_check+0x180/0x1bc fs/dcache.c:1672 lr : umount_check+0x180/0x1bc fs/dcache.c:1672 sp : ffff800021c477a0 x29: ffff800021c477a0 x28: ffff0000e14b7608 x27: ffff0000e14b7720 x26: ffff0000e14b7608 x25: dfff800000000000 x24: ffff0000fd4e4000 x23: dfff800000000000 x22: ffff8000157fe9a0 x21: 0000000000000005 x20: 0000000000000925 x19: ffff0000e14b7608 x18: ffff800011abbcc0 x17: 756f6d6e755b2029 x16: ffff8000082d22e0 x15: 0000000000000002 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000080000 x11: 0000000000022ccb x10: ffff8000224f9000 x9 : 84b2d21218383d00 x8 : 84b2d21218383d00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800021c47278 x4 : ffff8000151a4820 x3 : ffff80000a84556c x2 : ffff00019f6bcd10 x1 : 0000000000000002 x0 : 0000000000000051 Call trace: umount_check+0x180/0x1bc fs/dcache.c:1672 d_walk+0x68/0x654 fs/dcache.c:1367 do_one_tree+0x40/0xf0 fs/dcache.c:1688 shrink_dcache_for_umount+0x68/0x114 fs/dcache.c:1704 generic_shutdown_super+0x68/0x324 fs/super.c:473 kill_block_super+0x70/0xdc fs/super.c:1470 gfs2_kill_sb+0xc0/0xd4 fs/gfs2/ops_fstype.c:-1 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xe8/0x108 fs/super.c:363 gfs2_thaw_super+0x184/0x254 fs/gfs2/super.c:828 do_vfs_ioctl+0xfb4/0x206c fs/ioctl.c:-1 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 123596 hardirqs last enabled at (123595): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (123596): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (123560): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (123560): [] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624 softirqs last disabled at (123501): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5102 at include/linux/backing-dev.h:247 inode_to_wb include/linux/backing-dev.h:243 [inline] WARNING: CPU: 1 PID: 5102 at include/linux/backing-dev.h:247 folio_account_dirtied mm/page-writeback.c:2587 [inline] WARNING: CPU: 1 PID: 5102 at include/linux/backing-dev.h:247 __folio_mark_dirty+0x8a0/0xce0 mm/page-writeback.c:2638 Modules linked in: CPU: 1 PID: 5102 Comm: syz.0.190 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 824000c5 (Nzcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : inode_to_wb include/linux/backing-dev.h:243 [inline] pc : folio_account_dirtied mm/page-writeback.c:2587 [inline] pc : __folio_mark_dirty+0x8a0/0xce0 mm/page-writeback.c:2638 lr : inode_to_wb include/linux/backing-dev.h:243 [inline] lr : folio_account_dirtied mm/page-writeback.c:2587 [inline] lr : __folio_mark_dirty+0x8a0/0xce0 mm/page-writeback.c:2638 sp : ffff800021c472a0 x29: ffff800021c472c0 x28: 1fffff80007682f8 x27: dfff800000000000 x26: 0000000000000000 x25: ffff0000c049be90 x24: 0000000000000001 x23: 0000000000000000 x22: fffffc0003b417c8 x21: 1fffe000180937d2 x20: ffff0000d033f228 x19: fffffc0003b417c0 x18: ffff800011abbcc0 x17: ffff8000181f8000 x16: ffff8000082d0e30 x15: ffff800017cd8fc0 x14: ffff0000c934ddd8 x13: 1ffff00002a180b1 x12: 0000000000080000 x11: 000000000006f605 x10: ffff8000224f9000 x9 : ffff8000086fb7c0 x8 : 000000000006f606 x7 : ffff8000086faf64 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff8000082e7768 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: inode_to_wb include/linux/backing-dev.h:243 [inline] folio_account_dirtied mm/page-writeback.c:2587 [inline] __folio_mark_dirty+0x8a0/0xce0 mm/page-writeback.c:2638 __set_page_dirty include/linux/pagemap.h:1088 [inline] mark_buffer_dirty+0x2b8/0x5cc fs/buffer.c:1105 gfs2_unpin+0x120/0x914 fs/gfs2/lops.c:111 buf_lo_after_commit+0x140/0x188 fs/gfs2/lops.c:747 lops_after_commit fs/gfs2/lops.h:49 [inline] gfs2_log_flush+0xbc8/0x1aa0 fs/gfs2/log.c:1116 gfs2_trans_end+0x2e8/0x4b4 fs/gfs2/trans.c:158 do_sync+0x7ec/0xa94 fs/gfs2/quota.c:976 gfs2_quota_sync+0x2e0/0x528 fs/gfs2/quota.c:1329 gfs2_sync_fs+0x4c/0xc4 fs/gfs2/super.c:660 sync_filesystem+0xe8/0x218 fs/sync.c:56 generic_shutdown_super+0x70/0x324 fs/super.c:474 kill_block_super+0x70/0xdc fs/super.c:1470 gfs2_kill_sb+0xc0/0xd4 fs/gfs2/ops_fstype.c:-1 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xe8/0x108 fs/super.c:363 gfs2_thaw_super+0x184/0x254 fs/gfs2/super.c:828 do_vfs_ioctl+0xfb4/0x206c fs/ioctl.c:-1 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 124018 hardirqs last enabled at (124017): [] folio_memcg_lock+0xe8/0x1fc mm/memcontrol.c:2113 hardirqs last disabled at (124018): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (124018): [] _raw_spin_lock_irqsave+0xa4/0xb4 kernel/locking/spinlock.c:162 softirqs last enabled at (123776): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (123776): [] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624 softirqs last disabled at (123599): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---