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 tty5. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty6. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.141' (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)[ 18.408030][ T22] audit: type=1400 audit(1613325222.931:8): avc: denied { execmem } for pid=324 comm="syz-executor691" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 18.435174][ T327] FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) [ 18.446346][ T327] incfs: Can't find or create .index dir in ./file0 [ 18.454444][ T330] BUG: Dentry 00000000468ba596{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 18.464220][ T330] ------------[ cut here ]------------ [ 18.469666][ T330] WARNING: CPU: 1 PID: 330 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 18.477955][ T330] Kernel panic - not syncing: panic_on_warn set ... [ 18.484508][ T330] CPU: 1 PID: 330 Comm: syz-executor691 Not tainted 5.4.98-syzkaller-00277-g0cd79a8750fa #0 [ 18.494550][ T330] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.504573][ T330] Call Trace: [ 18.507835][ T330] dump_stack+0x1d8/0x24e [ 18.512131][ T330] ? devkmsg_release+0x11c/0x11c [ 18.517037][ T330] ? show_regs_print_info+0x12/0x12 [ 18.522199][ T330] ? vprintk_store+0x680/0x680 [ 18.526928][ T330] ? console_trylock+0x166/0x1c0 [ 18.531830][ T330] ? umount_check+0x120/0x1c0 [ 18.536470][ T330] ? umount_check+0x120/0x1c0 [ 18.541114][ T330] panic+0x285/0x740 [ 18.545002][ T330] ? __warn+0xfa/0x200 [ 18.549035][ T330] ? nmi_panic+0x90/0x90 [ 18.553242][ T330] ? devkmsg_release+0x11c/0x11c [ 18.558146][ T330] ? is_valid_bugaddr+0xa0/0x150 [ 18.563062][ T330] ? umount_check+0x179/0x1c0 [ 18.567704][ T330] __warn+0x1f1/0x200 [ 18.571665][ T330] ? umount_check+0x179/0x1c0 [ 18.576308][ T330] report_bug+0x380/0x4d0 [ 18.580607][ T330] ? umount_check+0x179/0x1c0 [ 18.585262][ T330] do_invalid_op+0x6e/0x110 [ 18.589728][ T330] invalid_op+0x1e/0x30 [ 18.593897][ T330] RIP: 0010:umount_check+0x179/0x1c0 [ 18.599153][ T330] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 00 ca e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 87 43 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 [ 18.618730][ T330] RSP: 0018:ffff8881ea55f718 EFLAGS: 00010286 [ 18.624809][ T330] RAX: 0000000000000055 RBX: ffffffff85fc4f20 RCX: b41583caf6368800 [ 18.632771][ T330] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 18.640712][ T330] RBP: ffff8881f15f2420 R08: ffffffff814e6147 R09: ffffed103ede5e08 [ 18.648650][ T330] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 18.656591][ T330] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ef9f1880 [ 18.664561][ T330] ? vprintk_emit+0x457/0x4c0 [ 18.669214][ T330] d_walk+0x2d9/0x540 [ 18.673163][ T330] ? __d_free+0x20/0x20 [ 18.677284][ T330] shrink_dcache_for_umount+0x8a/0x1a0 [ 18.682709][ T330] generic_shutdown_super+0x63/0x2a0 [ 18.687962][ T330] kill_block_super+0x79/0xd0 [ 18.692622][ T330] deactivate_locked_super+0xaf/0x100 [ 18.697960][ T330] deactivate_super+0x1b3/0x270 [ 18.702781][ T330] ? deactivate_locked_super+0x100/0x100 [ 18.708380][ T330] ? dput+0x4de/0x5d0 [ 18.712329][ T330] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.717406][ T330] ? find_next_bit+0xc6/0x110 [ 18.722051][ T330] cleanup_mnt+0x432/0x4e0 [ 18.726434][ T330] task_work_run+0x186/0x1b0 [ 18.731001][ T330] do_exit+0xcb9/0x2bf0 [ 18.735123][ T330] ? mm_update_next_owner+0x5c0/0x5c0 [ 18.740461][ T330] ? futex_exit_release+0xc0/0xc0 [ 18.745452][ T330] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.750528][ T330] ? _raw_spin_lock_irqsave+0x210/0x210 [ 18.756045][ T330] do_group_exit+0x15c/0x2c0 [ 18.760603][ T330] get_signal+0x164f/0x1fc0 [ 18.765075][ T330] ? check_preemption_disabled+0x154/0x330 [ 18.770854][ T330] ? ptrace_notify+0x340/0x340 [ 18.775626][ T330] do_signal+0x92/0x5c0 [ 18.779788][ T330] ? __se_sys_futex+0x352/0x470 [ 18.784606][ T330] ? signal_fault+0x1e0/0x1e0 [ 18.789251][ T330] ? __x64_sys_futex+0x1d/0xf0 [ 18.793983][ T330] prepare_exit_to_usermode+0x207/0x310 [ 18.799496][ T330] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.805358][ T330] RIP: 0033:0x449f19 [ 18.809230][ T330] Code: Bad RIP value. [ 18.813310][ T330] RSP: 002b:00007f6a3acbe308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 18.821700][ T330] RAX: 0000000000000001 RBX: 00000000004cb418 RCX: 0000000000449f19 [ 18.829645][ T330] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00000000004cb41c [ 18.837583][ T330] RBP: 00000000004cb410 R08: 00007f6a3acbe6b8 R09: 0000000000000000 [ 18.845534][ T330] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb41c [ 18.853497][ T330] R13: 0030656c69662f2e R14: 6e656d6572636e69 R15: 0000000000022000 [ 18.862047][ T330] Kernel Offset: disabled [ 18.866349][ T330] Rebooting in 86400 seconds..