Warning: Permanently added '10.128.0.148' (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 (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)[ **] A start job is running for dev-ttyS0.device (12s / 1min 30s)[ 20.235676][ T22] audit: type=1400 audit(1626859256.298:8): avc: denied { execmem } for pid=336 comm="syz-executor190" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 20.277800][ T337] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 20.289502][ T337] EXT4-fs error (device loop0): __ext4_new_inode:930: comm syz-executor190: reserved inode found cleared - inode=1 [ 20.302782][ T337] incfs: Can't find or create .index dir in ./file0 [ 20.310213][ T337] BUG: Dentry ffff8881ecb9d330{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 20.320075][ T337] ------------[ cut here ]------------ [ 20.325511][ T337] WARNING: CPU: 1 PID: 337 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 20.334677][ T337] Modules linked in: [ 20.338681][ T337] CPU: 1 PID: 337 Comm: syz-executor190 Not tainted 5.4.125-syzkaller-00004-gfe8243e7f1d1 #0 [ 20.348797][ T337] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.359022][ T337] RIP: 0010:umount_check+0x179/0x1c0 [ 20.364285][ T337] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 60 0b 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 [ 20.383952][ T337] RSP: 0018:ffff8881e5f3fa58 EFLAGS: 00010282 [ 20.390000][ T337] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: ded3ee17ee5d8600 [ 20.397944][ T337] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 20.405884][ T337] RBP: ffff8881e6275420 R08: ffffffff814e90d7 R09: ffffed103ede9608 [ 20.413826][ T337] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 [ 20.421784][ T337] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecb9d330 [ 20.429731][ T337] FS: 000000000204b300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 20.438718][ T337] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.445277][ T337] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406e0 [ 20.453226][ T337] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.461166][ T337] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.469214][ T337] Call Trace: [ 20.472486][ T337] d_walk+0x2d9/0x540 [ 20.476449][ T337] ? __d_free+0x20/0x20 [ 20.480831][ T337] shrink_dcache_for_umount+0x8a/0x1a0 [ 20.486253][ T337] generic_shutdown_super+0x63/0x2a0 [ 20.491507][ T337] kill_block_super+0x79/0xd0 [ 20.496150][ T337] deactivate_locked_super+0xaf/0x100 [ 20.501509][ T337] deactivate_super+0x1b3/0x270 [ 20.506325][ T337] ? deactivate_locked_super+0x100/0x100 [ 20.511924][ T337] ? dput+0x4de/0x5d0 [ 20.516088][ T337] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 20.521174][ T337] ? find_next_bit+0xc6/0x110 [ 20.525827][ T337] cleanup_mnt+0x432/0x4e0 [ 20.530217][ T337] task_work_run+0x186/0x1b0 [ 20.534775][ T337] do_exit+0xcb9/0x2bf0 [ 20.538899][ T337] ? mm_update_next_owner+0x5c0/0x5c0 [ 20.544235][ T337] ? __up_read+0x6f/0x1b0 [ 20.548559][ T337] ? __down_read+0x210/0x210 [ 20.553129][ T337] ? check_preemption_disabled+0x154/0x330 [ 20.558902][ T337] ? debug_smp_processor_id+0x20/0x20 [ 20.564245][ T337] do_group_exit+0x15c/0x2c0 [ 20.568803][ T337] ? do_user_addr_fault+0x6b0/0xb40 [ 20.573991][ T337] __do_sys_exit_group+0x13/0x20 [ 20.578895][ T337] __se_sys_exit_group+0x10/0x10 [ 20.583806][ T337] __x64_sys_exit_group+0x37/0x40 [ 20.588806][ T337] do_syscall_64+0xcb/0x1e0 [ 20.593278][ T337] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.599144][ T337] RIP: 0033:0x442f09 [ 20.603008][ T337] Code: Bad RIP value. [ 20.607057][ T337] RSP: 002b:00007fff188039c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 20.615457][ T337] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442f09 [ 20.623402][ T337] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 20.631354][ T337] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 20.639313][ T337] R10: 0000000004000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 20.647339][ T337] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 20.655281][ T337] ---[ end trace 0ce4be089ddf9f4b ]--- [ *] A start job [ 20.664281][ T337] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... is running for dev-ttyS0.device (13s / 1min 30s)