Warning: Permanently added '10.128.0.18' (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 (12s / 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 (14s / 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)[*** ] A start job is running for dev-ttyS0.device (15s / 1min 30s)[ 22.872529][ T22] audit: type=1400 audit(1614008002.762:8): avc: denied { execmem } for pid=335 comm="syz-executor577" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 22.917185][ T336] incfs: Can't find or create .index dir in ./file0 [ 22.924253][ T336] BUG: Dentry 00000000d71d95b0{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 22.934070][ T336] ------------[ cut here ]------------ [ 22.939511][ T336] WARNING: CPU: 0 PID: 336 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 22.947817][ T336] Kernel panic - not syncing: panic_on_warn set ... [ 22.954373][ T336] CPU: 0 PID: 336 Comm: syz-executor577 Not tainted 5.4.99-syzkaller-00347-g6228b4887854 #0 [ 22.964405][ T336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.974444][ T336] Call Trace: [ 22.977714][ T336] dump_stack+0x1d8/0x24e [ 22.982015][ T336] ? devkmsg_release+0x11c/0x11c [ 22.986926][ T336] ? show_regs_print_info+0x12/0x12 [ 22.992102][ T336] ? vprintk_store+0x680/0x680 [ 22.996846][ T336] ? console_trylock+0x166/0x1c0 [ 23.001754][ T336] ? umount_check+0x120/0x1c0 [ 23.006398][ T336] ? umount_check+0x120/0x1c0 [ 23.011046][ T336] panic+0x285/0x740 [ 23.014909][ T336] ? __warn+0xfa/0x200 [ 23.018946][ T336] ? nmi_panic+0x90/0x90 [ 23.023175][ T336] ? devkmsg_release+0x11c/0x11c [ 23.028082][ T336] ? is_valid_bugaddr+0xa0/0x150 [ 23.033002][ T336] ? umount_check+0x179/0x1c0 [ 23.037646][ T336] __warn+0x1f1/0x200 [ 23.041607][ T336] ? umount_check+0x179/0x1c0 [ 23.046252][ T336] report_bug+0x380/0x4d0 [ 23.050551][ T336] ? umount_check+0x179/0x1c0 [ 23.055198][ T336] do_invalid_op+0x6e/0x110 [ 23.059671][ T336] invalid_op+0x1e/0x30 [ 23.063807][ T336] RIP: 0010:umount_check+0x179/0x1c0 [ 23.069063][ T336] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 80 cb e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 87 42 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 [ 23.088648][ T336] RSP: 0018:ffff8881e8e0fa58 EFLAGS: 00010282 [ 23.088656][ T336] RAX: 0000000000000055 RBX: ffffffff85fc4f20 RCX: 7619071f33e5ec00 [ 23.088660][ T336] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 23.088665][ T336] RBP: ffff8881f1647420 R08: ffffffff814e6147 R09: ffffed103edc5e08 [ 23.088677][ T336] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 23.126513][ T336] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efba9330 [ 23.134471][ T336] ? vprintk_emit+0x457/0x4c0 [ 23.139126][ T336] d_walk+0x2d9/0x540 [ 23.143167][ T336] ? __d_free+0x20/0x20 [ 23.147291][ T336] shrink_dcache_for_umount+0x8a/0x1a0 [ 23.152721][ T336] generic_shutdown_super+0x63/0x2a0 [ 23.157995][ T336] kill_block_super+0x79/0xd0 [ 23.162666][ T336] deactivate_locked_super+0xaf/0x100 [ 23.168005][ T336] deactivate_super+0x1b3/0x270 [ 23.172836][ T336] ? deactivate_locked_super+0x100/0x100 [ 23.178439][ T336] ? dput+0x4de/0x5d0 [ 23.182390][ T336] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 23.187472][ T336] ? find_next_bit+0xc6/0x110 [ 23.192119][ T336] cleanup_mnt+0x432/0x4e0 [ 23.196504][ T336] task_work_run+0x186/0x1b0 [ 23.201064][ T336] do_exit+0xcb9/0x2bf0 [ 23.205187][ T336] ? mm_update_next_owner+0x5c0/0x5c0 [ 23.210536][ T336] ? __up_read+0x6f/0x1b0 [ 23.214831][ T336] ? __down_read+0x210/0x210 [ 23.219387][ T336] ? check_preemption_disabled+0x154/0x330 [ 23.225194][ T336] ? debug_smp_processor_id+0x20/0x20 [ 23.230581][ T336] do_group_exit+0x15c/0x2c0 [ 23.235151][ T336] ? do_user_addr_fault+0x6b0/0xb40 [ 23.240322][ T336] __do_sys_exit_group+0x13/0x20 [ 23.245232][ T336] __se_sys_exit_group+0x10/0x10 [ 23.250139][ T336] __x64_sys_exit_group+0x37/0x40 [ 23.255132][ T336] do_syscall_64+0xcb/0x150 [ 23.259618][ T336] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 23.265513][ T336] RIP: 0033:0x442de9 [ 23.269387][ T336] Code: Bad RIP value. [ 23.273420][ T336] RSP: 002b:00007ffe2c2f1eb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 23.281798][ T336] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442de9 [ 23.289753][ T336] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 23.297710][ T336] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 23.305662][ T336] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 23.313602][ T336] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 23.322014][ T336] Kernel Offset: disabled [ 23.326320][ T336] Rebooting in 86400 seconds..