Warning: Permanently added '10.128.0.93' (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)[ **] A start job is running for dev-ttyS0.device (11s / 1min 30s)[ *] A start job is running for dev-ttyS0.device (12s / 1min 30s)[ 18.938389][ T22] audit: type=1400 audit(1609806982.670:8): avc: denied { execmem } for pid=361 comm="syz-executor726" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 18.966321][ T364] FAT-fs (loop0): Directory bread(block 6) failed [ 18.975308][ T364] FAT-fs (loop0): Directory bread(block 6) failed [ 18.981944][ T364] incfs: Can't find or create .index dir in ./file0 [ 18.990462][ T364] BUG: Dentry 00000000eb72097f{i=0,n=.index} still in use (1) [unmount of vfat loop0] [ 19.000216][ T364] ------------[ cut here ]------------ [ 19.005671][ T364] WARNING: CPU: 1 PID: 364 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 19.013992][ T364] Kernel panic - not syncing: panic_on_warn set ... [ 19.020547][ T364] CPU: 1 PID: 364 Comm: syz-executor726 Not tainted 5.4.86-syzkaller-00678-ge627b02af655 #0 [ 19.030597][ T364] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.040617][ T364] Call Trace: [ 19.043900][ T364] dump_stack+0x1dd/0x24e [ 19.048223][ T364] ? devkmsg_release+0x11c/0x11c [ 19.053138][ T364] ? show_regs_print_info+0x12/0x12 [ 19.058297][ T364] ? vprintk_store+0x690/0x690 [ 19.063024][ T364] ? console_trylock+0x166/0x1c0 [ 19.067939][ T364] ? umount_check+0xf0/0x1c0 [ 19.072513][ T364] ? umount_check+0xf0/0x1c0 [ 19.077073][ T364] panic+0x285/0x750 [ 19.080948][ T364] ? __warn+0xfa/0x200 [ 19.084981][ T364] ? nmi_panic+0x90/0x90 [ 19.089203][ T364] ? devkmsg_release+0x11c/0x11c [ 19.094121][ T364] ? is_valid_bugaddr+0xa0/0x150 [ 19.099035][ T364] ? umount_check+0x179/0x1c0 [ 19.103677][ T364] __warn+0x1fd/0x200 [ 19.107626][ T364] ? umount_check+0x179/0x1c0 [ 19.112293][ T364] report_bug+0x390/0x4d0 [ 19.116586][ T364] ? umount_check+0x179/0x1c0 [ 19.121226][ T364] do_invalid_op+0x6e/0x110 [ 19.125711][ T364] invalid_op+0x1e/0x30 [ 19.129849][ T364] RIP: 0010:umount_check+0x179/0x1c0 [ 19.135107][ T364] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 a3 46 1d 85 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 a7 4e b0 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 [ 19.154676][ T364] RSP: 0018:ffff8881e84ff700 EFLAGS: 00010296 [ 19.160718][ T364] RAX: 0000000000000054 RBX: ffffffff8548cd70 RCX: 586ccf171e28cc00 [ 19.168656][ T364] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 19.176592][ T364] RBP: ffff8881e8537420 R08: ffffffff814e3571 R09: ffffed103ee25e08 [ 19.184532][ T364] R10: ffffed103ee25e08 R11: 0000000000000000 R12: dffffc0000000000 [ 19.192513][ T364] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881eff53770 [ 19.200456][ T364] ? vprintk_emit+0x3b1/0x500 [ 19.205111][ T364] d_walk+0x2e9/0x570 [ 19.209058][ T364] ? __d_free+0x20/0x20 [ 19.213205][ T364] shrink_dcache_for_umount+0x8a/0x1b0 [ 19.218643][ T364] generic_shutdown_super+0x63/0x2a0 [ 19.223902][ T364] kill_block_super+0x79/0xd0 [ 19.228552][ T364] deactivate_locked_super+0xaf/0x100 [ 19.233889][ T364] deactivate_super+0x1b8/0x280 [ 19.238714][ T364] ? deactivate_locked_super+0x100/0x100 [ 19.244311][ T364] ? dput+0x4ed/0x5e0 [ 19.248268][ T364] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.253341][ T364] ? find_next_bit+0xd8/0x120 [ 19.257980][ T364] cleanup_mnt+0x432/0x4e0 [ 19.262367][ T364] task_work_run+0x176/0x1a0 [ 19.266932][ T364] do_exit+0xcc2/0x2830 [ 19.271087][ T364] ? mm_update_next_owner+0x5d0/0x5d0 [ 19.276424][ T364] ? check_preemption_disabled+0x15a/0x330 [ 19.282206][ T364] ? futex_exit_release+0xc0/0xc0 [ 19.287205][ T364] ? debug_smp_processor_id+0x20/0x20 [ 19.292545][ T364] ? stack_trace_snprint+0x150/0x150 [ 19.297806][ T364] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.302884][ T364] ? _raw_spin_lock_irqsave+0x210/0x210 [ 19.308394][ T364] do_group_exit+0x155/0x2b0 [ 19.312952][ T364] get_signal+0x13ec/0x1f00 [ 19.317422][ T364] ? ptrace_notify+0x340/0x340 [ 19.322154][ T364] do_signal+0x92/0x5d0 [ 19.326302][ T364] ? __se_sys_futex+0x34d/0x470 [ 19.331119][ T364] ? kfree+0x12c/0x660 [ 19.335152][ T364] ? signal_fault+0x1f0/0x1f0 [ 19.339791][ T364] ? ksys_mount+0xe0/0xf0 [ 19.344084][ T364] ? __x64_sys_futex+0x1d/0xf0 [ 19.348812][ T364] prepare_exit_to_usermode+0x207/0x310 [ 19.354321][ T364] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.360186][ T364] RIP: 0033:0x44a229 [ 19.364069][ T364] Code: Bad RIP value. [ 19.368100][ T364] RSP: 002b:00007f5aea53ad98 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 19.376490][ T364] RAX: fffffffffffffe00 RBX: 00000000006dbc28 RCX: 000000000044a229 [ 19.376495][ T364] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dbc28 [ 19.376499][ T364] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 19.376503][ T364] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 19.376508][ T364] R13: 0000000000004002 R14: 0001800200746166 R15: 2e73666b6d903ceb [ 19.384899][ T364] Kernel Offset: disabled [ 19.420933][ T364] Rebooting in 86400 seconds..