Warning: Permanently added '10.128.0.142' (ECDSA) to the list of known hosts. executing program [* ] A start job is running for dev-ttyS0.device (8s / 1min 30s)[** ] A start job is running for dev-ttyS0.device (9s / 1min 30s)[*** ] A start job is running for dev-ttyS0.device (9s / 1min 30s)[ *** ] A start job is running for dev-ttyS0.device (9s / 1min 30s)[ *** ] A start job is running for dev-ttyS0.device (10s / 1min 30s)[ ***] A start job is running for dev-ttyS0.device (10s / 1min 30s)[ **] A start job is running for dev-ttyS0.device (11s / 1min 30s)[ *] A start job is running for dev-ttyS0.device (11s / 1min 30s)[ 19.591276][ T22] audit: type=1400 audit(1626705904.142:8): avc: denied { execmem } for pid=334 comm="syz-executor570" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ **] A start job is running for dev-ttyS0.device (12s / 1min 30s)[ 19.633373][ T336] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 19.642975][ T336] EXT4-fs error (device loop0): __ext4_new_inode:930: comm syz-executor570: reserved inode found cleared - inode=1 [ 19.657894][ T336] incfs: Can't find or create .index dir in ./file0 [ 19.666396][ T336] BUG: Dentry ffff8881ecbb2770{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 19.676240][ T336] ------------[ cut here ]------------ [ 19.681777][ T336] WARNING: CPU: 1 PID: 336 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 19.690080][ T336] Modules linked in: [ 19.693948][ T336] CPU: 1 PID: 336 Comm: syz-executor570 Not tainted 5.4.125-syzkaller-00002-g18f5581af79d #0 [ 19.704060][ T336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.714095][ T336] RIP: 0010:umount_check+0x179/0x1c0 [ 19.719345][ T336] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 e0 0a e9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 37 a2 af ff 48 83 c4 08 <0f> 0b e9 fd fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c d4 fe ff [ 19.738917][ T336] RSP: 0018:ffff8881e5ac7a58 EFLAGS: 00010282 [ 19.744952][ T336] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: 741b62dd2af4ff00 [ 19.752900][ T336] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 19.760850][ T336] RBP: ffff8881e6321420 R08: ffffffff814e90d7 R09: ffffed103ede9608 [ 19.769069][ T336] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 [ 19.777015][ T336] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecbb2770 [ 19.785201][ T336] FS: 0000000002202300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 19.795509][ T336] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.802265][ T336] CR2: 00000000004b51d0 CR3: 00000001eb167000 CR4: 00000000001406e0 [ 19.810238][ T336] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.818542][ T336] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.826496][ T336] Call Trace: [ 19.829771][ T336] d_walk+0x2d9/0x540 [ 19.833723][ T336] ? __d_free+0x20/0x20 [ 19.837849][ T336] shrink_dcache_for_umount+0x8a/0x1a0 [ 19.843407][ T336] generic_shutdown_super+0x63/0x2a0 [ 19.848858][ T336] kill_block_super+0x79/0xd0 [ 19.855197][ T336] deactivate_locked_super+0xaf/0x100 [ 19.860737][ T336] deactivate_super+0x1b3/0x270 [ 19.866188][ T336] ? deactivate_locked_super+0x100/0x100 [ 19.871890][ T336] ? dput+0x4de/0x5d0 [ 19.875844][ T336] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.881015][ T336] ? find_next_bit+0xc6/0x110 [ 19.885818][ T336] cleanup_mnt+0x432/0x4e0 [ 19.890214][ T336] task_work_run+0x186/0x1b0 [ 19.894876][ T336] do_exit+0xcb9/0x2bf0 [ 19.899121][ T336] ? mm_update_next_owner+0x5c0/0x5c0 [ 19.904553][ T336] ? __up_read+0x6f/0x1b0 [ 19.909043][ T336] ? __down_read+0x210/0x210 [ 19.913786][ T336] ? check_preemption_disabled+0x154/0x330 [ 19.919657][ T336] ? debug_smp_processor_id+0x20/0x20 [ 19.925217][ T336] do_group_exit+0x15c/0x2c0 [ 19.929951][ T336] ? do_user_addr_fault+0x6b0/0xb40 [ 19.935134][ T336] __do_sys_exit_group+0x13/0x20 [ 19.940044][ T336] __se_sys_exit_group+0x10/0x10 [ 19.945066][ T336] __x64_sys_exit_group+0x37/0x40 [ 19.950148][ T336] do_syscall_64+0xcb/0x1e0 [ 19.954708][ T336] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.960581][ T336] RIP: 0033:0x442e89 [ 19.964669][ T336] Code: Bad RIP value. [ 19.968710][ T336] RSP: 002b:00007ffeead15388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 19.977287][ T336] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e89 [ 19.985348][ T336] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 19.993320][ T336] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 20.001474][ T336] R10: 0000000000000800 R11: 0000000000000246 R12: 00000000004b42f0 [ 20.009508][ T336] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 20.017549][ T336] ---[ end trace f945140da95b40ef ]--- [ 20.025504][ T336] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...