Starting Permit User Sessions... Starting OpenBSD Secure Shell server... [ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty5. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.174' (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 (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)[ 20.719634][ T22] audit: type=1400 audit(1617976039.418:8): avc: denied { execmem } for pid=346 comm="syz-executor220" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 20.764431][ T348] incfs: Can't find or create .index dir in ./file0 [ 20.772493][ T348] BUG: Dentry ffff8881eff7e770{i=0,n=.index} still in use (1) [unmount of vfat loop0] [ 20.782683][ T348] ------------[ cut here ]------------ [ 20.788716][ T348] WARNING: CPU: 1 PID: 348 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 20.798233][ T348] Modules linked in: [ 20.802390][ T348] CPU: 1 PID: 348 Comm: syz-executor220 Not tainted 5.4.109-syzkaller-00004-gb98c912db9ec #0 [ 20.813199][ T348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.823519][ T348] RIP: 0010:umount_check+0x179/0x1c0 [ 20.829049][ T348] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 a0 ec e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 77 dc 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 [ 20.850321][ T348] RSP: 0018:ffff8881e8cefa58 EFLAGS: 00010282 [ 20.857086][ T348] RAX: 0000000000000054 RBX: ffffffff85fc4de0 RCX: 25792ee95a506000 [ 20.867459][ T348] RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 [ 20.877228][ T348] RBP: ffff8881e8c93420 R08: ffffffff814e8847 R09: ffffed103ede5e08 [ 20.887083][ T348] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 20.896797][ T348] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881eff7e770 [ 20.906104][ T348] FS: 000000000050a300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 20.915697][ T348] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.922789][ T348] CR2: 00000000004b5290 CR3: 0000000005e0e000 CR4: 00000000001406e0 [ 20.931149][ T348] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.940107][ T348] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.949402][ T348] Call Trace: [ 20.952991][ T348] d_walk+0x2d9/0x540 [ 20.957155][ T348] ? __d_free+0x20/0x20 [ 20.961425][ T348] shrink_dcache_for_umount+0x8a/0x1a0 [ 20.967309][ T348] generic_shutdown_super+0x63/0x2a0 [ 20.973590][ T348] kill_block_super+0x79/0xd0 [ 20.978811][ T348] deactivate_locked_super+0xaf/0x100 [ 20.984701][ T348] deactivate_super+0x1b3/0x270 [ 20.989994][ T348] ? deactivate_locked_super+0x100/0x100 [ 20.996510][ T348] ? dput+0x4de/0x5d0 [ 21.001523][ T348] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.007478][ T348] ? find_next_bit+0xc6/0x110 [ 21.012733][ T348] cleanup_mnt+0x432/0x4e0 [ 21.017472][ T348] task_work_run+0x186/0x1b0 [ 21.022915][ T348] do_exit+0xcb9/0x2bf0 [ 21.028229][ T348] ? mm_update_next_owner+0x5c0/0x5c0 [ 21.034993][ T348] ? __up_read+0x6f/0x1b0 [ 21.039848][ T348] ? __down_read+0x210/0x210 [ 21.045873][ T348] ? check_preemption_disabled+0x154/0x330 [ 21.054943][ T348] ? debug_smp_processor_id+0x20/0x20 [ 21.061112][ T348] do_group_exit+0x15c/0x2c0 [ 21.066623][ T348] ? do_user_addr_fault+0x6b0/0xb40 [ 21.073260][ T348] __do_sys_exit_group+0x13/0x20 [ 21.079578][ T348] __se_sys_exit_group+0x10/0x10 [ 21.086045][ T348] __x64_sys_exit_group+0x37/0x40 [ 21.093249][ T348] do_syscall_64+0xcb/0x1e0 [ 21.098928][ T348] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 21.105800][ T348] RIP: 0033:0x4430a9 [ 21.110217][ T348] Code: Bad RIP value. [ 21.114963][ T348] RSP: 002b:00007fff85544bf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 21.125003][ T348] RAX: ffffffffffffffda RBX: 00000000004b43b0 RCX: 00000000004430a9 [ 21.133952][ T348] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 21.143201][ T348] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 21.153029][ T348] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b43b0 [ 21.161642][ T348] R13: 0000000000000001 R14