Warning: Permanently added '10.128.0.196' (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)[ 18.698108][ T22] audit: type=1400 audit(1631513372.706:8): avc: denied { execmem } for pid=338 comm="syz-executor770" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 18.734402][ T339] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 18.744126][ T339] EXT4-fs error (device loop0): __ext4_new_inode:930: comm syz-executor770: reserved inode found cleared - inode=1 [ 18.756775][ T339] incfs: Can't find or create .index dir in ./file0 [ 18.764306][ T339] BUG: Dentry ffff8881ecaf7880{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 18.774398][ T339] ------------[ cut here ]------------ [ 18.779862][ T339] WARNING: CPU: 1 PID: 339 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 18.788156][ T339] Modules linked in: [ 18.792039][ T339] CPU: 1 PID: 339 Comm: syz-executor770 Not tainted 5.4.125-syzkaller-00017-g8670e680e307 #0 [ 18.802183][ T339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.812239][ T339] RIP: 0010:umount_check+0x179/0x1c0 [ 18.817511][ T339] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 60 0c 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 [ 18.837216][ T339] RSP: 0018:ffff8881e5047a58 EFLAGS: 00010282 [ 18.843270][ T339] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: 93a7a46f52873600 [ 18.851227][ T339] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 18.859204][ T339] RBP: ffff8881e5a58420 R08: ffffffff814e90d7 R09: ffffed103ede9608 [ 18.867205][ T339] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 [ 18.875181][ T339] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecaf7880 [ 18.883156][ T339] FS: 0000000000e92300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 18.892072][ T339] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.898651][ T339] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406e0 [ 18.906607][ T339] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.914569][ T339] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.922588][ T339] Call Trace: [ 18.925893][ T339] d_walk+0x2d9/0x540 [ 18.929876][ T339] ? __d_free+0x20/0x20 [ 18.934021][ T339] shrink_dcache_for_umount+0x8a/0x1a0 [ 18.939477][ T339] generic_shutdown_super+0x63/0x2a0 [ 18.944767][ T339] kill_block_super+0x79/0xd0 [ 18.949438][ T339] deactivate_locked_super+0xaf/0x100 [ 18.954820][ T339] deactivate_super+0x1b3/0x270 [ 18.959734][ T339] ? deactivate_locked_super+0x100/0x100 [ 18.965466][ T339] ? dput+0x4de/0x5d0 [ 18.969451][ T339] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.974553][ T339] ? find_next_bit+0xc6/0x110 [ 18.979230][ T339] cleanup_mnt+0x432/0x4e0 [ 18.983638][ T339] task_work_run+0x186/0x1b0 [ 18.988243][ T339] do_exit+0xcb9/0x2bf0 [ 18.992475][ T339] ? mm_update_next_owner+0x5c0/0x5c0 [ 18.997838][ T339] ? __up_read+0x6f/0x1b0 [ 19.002162][ T339] ? __down_read+0x210/0x210 [ 19.006758][ T339] ? check_preemption_disabled+0x154/0x330 [ 19.012579][ T339] ? debug_smp_processor_id+0x20/0x20 [ 19.018057][ T339] do_group_exit+0x15c/0x2c0 [ 19.022908][ T339] ? do_user_addr_fault+0x6b0/0xb40 [ 19.028175][ T339] __do_sys_exit_group+0x13/0x20 [ 19.033104][ T339] __se_sys_exit_group+0x10/0x10 [ 19.038153][ T339] __x64_sys_exit_group+0x37/0x40 [ 19.043177][ T339] do_syscall_64+0xcb/0x1e0 [ 19.050556][ T339] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.056783][ T339] RIP: 0033:0x442f39 [ 19.060672][ T339] Code: Bad RIP value. [ 19.064744][ T339] RSP: 002b:00007ffdbf4508e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 19.073229][ T339] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442f39 [ 19.081194][ T339] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 19.089166][ T339] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 19.097117][ T339] R10: 0000