IPVS: ftp: loaded support on port[0] = 21 BUG: Dentry 0000000063025f47{i=1,n=/} still in use (2) [unmount of sysfs sysfs] WARNING: CPU: 1 PID: 9155 at fs/dcache.c:1529 umount_check fs/dcache.c:1520 [inline] WARNING: CPU: 1 PID: 9155 at fs/dcache.c:1529 umount_check.cold+0xe9/0x10a fs/dcache.c:1510 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9155 Comm: syz-executor713 Not tainted 5.2.0-rc4+ #25 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x744 kernel/panic.c:219 __warn.cold+0x20/0x4d kernel/panic.c:576 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986 RIP: 0010:umount_check fs/dcache.c:1529 [inline] RIP: 0010:umount_check.cold+0xe9/0x10a fs/dcache.c:1510 Code: 89 ff e8 00 5c f0 ff 48 81 c3 68 06 00 00 45 89 e8 4c 89 e1 53 4d 8b 0f 4c 89 f2 4c 89 e6 48 c7 c7 c0 ff 75 87 e8 a1 bd a1 ff <0f> 0b 58 e9 bd 2a ff ff e8 d0 5b f0 ff e9 29 ff ff ff 45 31 f6 e9 RSP: 0018:ffff88809614fba8 EFLAGS: 00010286 RAX: 0000000000000050 RBX: ffff8880957e0e28 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815ac956 RDI: ffffed1012c29f67 RBP: ffff88809614fbd8 R08: 0000000000000050 R09: ffff8880a02c4f08 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880917801e0 R13: 0000000000000002 R14: 0000000000000001 R15: ffffffff88c939a0 d_walk+0x194/0x950 fs/dcache.c:1264 do_one_tree+0x28/0x40 fs/dcache.c:1536 shrink_dcache_for_umount+0x72/0x170 fs/dcache.c:1552 generic_shutdown_super+0x6d/0x370 fs/super.c:443 kill_anon_super+0x3e/0x60 fs/super.c:1137 kernfs_kill_sb+0x165/0x1e3 fs/kernfs/mount.c:360 sysfs_kill_sb+0x23/0x40 fs/sysfs/mount.c:87 deactivate_locked_super+0x95/0x100 fs/super.c:331 deactivate_super fs/super.c:362 [inline] deactivate_super+0x1b2/0x1d0 fs/super.c:358 cleanup_mnt+0xbf/0x160 fs/namespace.c:1120 __cleanup_mnt+0x16/0x20 fs/namespace.c:1127 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:185 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:168 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_32_irqs_on arch/x86/entry/common.c:352 [inline] do_fast_syscall_32+0xb51/0xd7d arch/x86/entry/common.c:408 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f9e849 Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000ffa5a5ec EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000000000 RDX: 0000000000000005 RSI: 00000000080bc218 RDI: 0000000000000000 RBP: 00000000ffa5a638 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..