Warning: Permanently added '10.128.1.6' (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 (10s / 1min 30s)[ ***] A start job is running for dev-ttyS0.device (11s / 1min 30s)[ 18.576662][ T22] audit: type=1400 audit(1630178848.439:8): avc: denied { execmem } for pid=338 comm="syz-executor888" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 18.621825][ T341] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 18.633881][ T341] EXT4-fs error (device loop0): __ext4_new_inode:930: comm syz-executor888: reserved inode found cleared - inode=1 [ 18.646511][ T341] incfs: Can't find or create .index dir in ./file0 [ 18.654916][ T341] BUG: Dentry ffff8881ecb8daa0{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 18.666361][ T341] ------------[ cut here ]------------ [ 18.671817][ T341] WARNING: CPU: 0 PID: 341 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 18.680106][ T341] Modules linked in: [ 18.683976][ T341] CPU: 0 PID: 341 Comm: syz-executor888 Not tainted 5.4.125-syzkaller-00016-gae94e015273b #0 [ 18.694453][ T341] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.704651][ T341] RIP: 0010:umount_check+0x179/0x1c0 [ 18.709939][ T341] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 09 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 [ 18.729599][ T341] RSP: 0018:ffff8881e54e7738 EFLAGS: 00010282 [ 18.735631][ T341] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: c8e029b00e681100 [ 18.743585][ T341] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 18.751621][ T341] RBP: ffff8881e5451420 R08: ffffffff814e90d7 R09: ffffed103edc9608 [ 18.759565][ T341] R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 [ 18.767512][ T341] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecb8daa0 [ 18.775466][ T341] FS: 00007f7409d78700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 18.784548][ T341] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.791114][ T341] CR2: 00000000004d15c0 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 18.799515][ T341] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.807658][ T341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.815599][ T341] Call Trace: [ 18.818879][ T341] d_walk+0x2d9/0x540 [ 18.822839][ T341] ? __d_free+0x20/0x20 [ 18.827060][ T341] shrink_dcache_for_umount+0x8a/0x1a0 [ 18.832501][ T341] generic_shutdown_super+0x63/0x2a0 [ 18.837845][ T341] kill_block_super+0x79/0xd0 [ 18.842614][ T341] deactivate_locked_super+0xaf/0x100 [ 18.847953][ T341] deactivate_super+0x1b3/0x270 [ 18.852772][ T341] ? deactivate_locked_super+0x100/0x100 [ 18.858471][ T341] ? dput+0x4de/0x5d0 [ 18.862509][ T341] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.867599][ T341] ? find_next_bit+0xc6/0x110 [ 18.872344][ T341] cleanup_mnt+0x432/0x4e0 [ 18.876738][ T341] task_work_run+0x186/0x1b0 [ 18.881297][ T341] do_exit+0xcb9/0x2bf0 [ 18.885426][ T341] ? mm_update_next_owner+0x5c0/0x5c0 [ 18.890765][ T341] ? debug_smp_processor_id+0x20/0x20 [ 18.896136][ T341] ? stack_trace_snprint+0x150/0x150 [ 18.901391][ T341] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.906482][ T341] ? _raw_spin_lock_irqsave+0x210/0x210 [ 18.912083][ T341] do_group_exit+0x15c/0x2c0 [ 18.916727][ T341] get_signal+0x164f/0x1fc0 [ 18.921322][ T341] ? ptrace_notify+0x340/0x340 [ 18.926051][ T341] ? check_preemption_disabled+0x154/0x330 [ 18.932184][ T341] do_signal+0x8d/0x610 [ 18.936321][ T341] ? kfree+0xe0/0x660 [ 18.940284][ T341] ? signal_fault+0x1e0/0x1e0 [ 18.945121][ T341] ? ksys_mount+0xe0/0xf0 [ 18.949433][ T341] ? __x64_sys_futex+0x1d/0xf0 [ 18.954261][ T341] prepare_exit_to_usermode+0x207/0x310 [ 18.959779][ T341] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.965738][ T341] RIP: 0033:0x44a109 [ 18.969605][ T341] Code: Bad RIP value. [ 18.973639][ T341] RSP: 002b:00007f7409d782f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 18.982025][ T341] RAX: fffffffffffffe00 RBX: 00000000004cb400 RCX: 000000000044a109 [ 18.990080][ T341] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cb408 [ 18.998222][ T341] RBP: 00000000004cb40c R08: 0000000000000000 R09: 0000000000000000 [ 19.006173][ T341] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 19.014170][ T341] R13: e5d26e84aa4cf3c6 R14: 6e656d6572636e69 R15: 00000000004cb408 [ 19.022124][