[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty6. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.5' (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)[ ***] A start job is running for dev-ttyS0.device (11s / 1min 30s)[ **] A start job is running for dev-ttyS0.device (12s / 1min 30s)[ *] A start job is running for dev-ttyS0.device (13s / 1min 30s)[ **] A start job is running for dev-ttyS0.device (13s / 1min 30s)[ ***] A start job is running for dev-ttyS0.device (14s / 1min 30s)[ *** ] A start job is running for dev-ttyS0.device (15s / 1min 30s)[ 23.053195][ T22] audit: type=1400 audit(1611311829.472:8): avc: denied { execmem } for pid=356 comm="syz-executor041" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 23.080383][ T357] FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) [ 23.092301][ T357] incfs: Can't find or create .index dir in ./file0 [ 23.099674][ T357] BUG: Dentry 0000000074f8cce5{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 23.109449][ T357] ------------[ cut here ]------------ [ 23.114903][ T357] WARNING: CPU: 1 PID: 357 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 23.123196][ T357] Kernel panic - not syncing: panic_on_warn set ... [ 23.129981][ T357] CPU: 1 PID: 357 Comm: syz-executor041 Not tainted 5.4.91-syzkaller-00438-g15cec007c4a8 #0 [ 23.140011][ T357] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.150042][ T357] Call Trace: [ 23.153311][ T357] dump_stack+0x1dd/0x24e [ 23.157622][ T357] ? devkmsg_release+0x11c/0x11c [ 23.162541][ T357] ? show_regs_print_info+0x12/0x12 [ 23.167769][ T357] ? vprintk_store+0x690/0x690 [ 23.172507][ T357] ? console_trylock+0x166/0x1c0 [ 23.177415][ T357] ? umount_check+0x130/0x1c0 [ 23.182066][ T357] ? umount_check+0x130/0x1c0 [ 23.186711][ T357] panic+0x285/0x750 [ 23.190577][ T357] ? __warn+0xfa/0x200 [ 23.194613][ T357] ? nmi_panic+0x90/0x90 [ 23.198822][ T357] ? devkmsg_release+0x11c/0x11c [ 23.203728][ T357] ? is_valid_bugaddr+0xa0/0x150 [ 23.208634][ T357] ? umount_check+0x179/0x1c0 [ 23.213279][ T357] __warn+0x1fd/0x200 [ 23.217229][ T357] ? umount_check+0x179/0x1c0 [ 23.221876][ T357] report_bug+0x390/0x4d0 [ 23.226176][ T357] ? umount_check+0x179/0x1c0 [ 23.230823][ T357] do_invalid_op+0x6e/0x110 [ 23.235295][ T357] invalid_op+0x1e/0x30 [ 23.239419][ T357] RIP: 0010:umount_check+0x179/0x1c0 [ 23.244670][ T357] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 e3 57 1d 85 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 67 36 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 [ 23.264242][ T357] RSP: 0018:ffff8881e840fa40 EFLAGS: 00010292 [ 23.270279][ T357] RAX: 0000000000000055 RBX: ffffffff8548d020 RCX: f8f9b70bdbde9000 [ 23.278220][ T357] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 23.286167][ T357] RBP: ffff8881ed2d8420 R08: ffffffff814e45f1 R09: ffffed103ee25e08 [ 23.294123][ T357] R10: ffffed103ee25e08 R11: 0000000000000000 R12: dffffc0000000000 [ 23.302066][ T357] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881effc0990 [ 23.310014][ T357] ? vprintk_emit+0x3b1/0x500 [ 23.314661][ T357] d_walk+0x2e9/0x570 [ 23.318611][ T357] ? __d_free+0x20/0x20 [ 23.322754][ T357] shrink_dcache_for_umount+0x8a/0x1b0 [ 23.328180][ T357] generic_shutdown_super+0x63/0x2a0 [ 23.333432][ T357] kill_block_super+0x79/0xd0 [ 23.338089][ T357] deactivate_locked_super+0xaf/0x100 [ 23.343428][ T357] deactivate_super+0x1b8/0x280 [ 23.348246][ T357] ? deactivate_locked_super+0x100/0x100 [ 23.353843][ T357] ? dput+0x4ed/0x5e0 [ 23.357826][ T357] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 23.362921][ T357] ? find_next_bit+0xd8/0x120 [ 23.367567][ T357] cleanup_mnt+0x432/0x4e0 [ 23.371951][ T357] task_work_run+0x176/0x1a0 [ 23.376509][ T357] do_exit+0xcc2/0x2830 [ 23.380634][ T357] ? mm_update_next_owner+0x5d0/0x5d0 [ 23.385973][ T357] ? __up_read+0x6f/0x1b0 [ 23.390266][ T357] ? __down_read+0x210/0x210 [ 23.394821][ T357] ? check_preemption_disabled+0x15a/0x330 [ 23.400609][ T357] ? debug_smp_processor_id+0x20/0x20 [ 23.406042][ T357] do_group_exit+0x155/0x2b0 [ 23.410617][ T357] ? do_user_addr_fault+0x6dd/0xb10 [ 23.415789][ T357] __do_sys_exit_group+0x13/0x20 [ 23.420697][ T357] __se_sys_exit_group+0x10/0x10 [ 23.425604][ T357] __x64_sys_exit_group+0x37/0x40 [ 23.430597][ T357] do_syscall_64+0xcb/0x150 [ 23.435068][ T357] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 23.440933][ T357] RIP: 0033:0x443748 [ 23.444828][ T357] Code: Bad RIP value. [ 23.448863][ T357] RSP: 002b:00007ffc8be0ab28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 23.457254][ T357] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000443748 [ 23.465195][ T357] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001 [ 23.473135][ T357] RBP: 00000000004c3ab0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 23.481088][ T357] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 23.489049][ T357] R13: 00000000006d6180 R14: 0000000000000000 R15: 0000000000000000 [ 23.497578][ T357] Kernel Offset: disabled [ 23.501880][ T357] Rebooting in 86400 seconds..