Warning: Permanently added '10.128.0.180' (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)[ 17.510698][ T22] audit: type=1400 audit(1612063723.716:8): avc: denied { execmem } for pid=360 comm="syz-executor753" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 17.537804][ T362] incfs: Can't find or create .index dir in ./file0 [ 17.547256][ T362] BUG: Dentry 0000000050b8e456{i=0,n=.index} still in use (1) [unmount of 9p 9p] [ 17.556587][ T362] ------------[ cut here ]------------ [ 17.562074][ T362] WARNING: CPU: 1 PID: 362 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 17.562079][ T362] Kernel panic - not syncing: panic_on_warn set ... [ 17.5620[ **[09][ T;31m* ] A st36art job is runni2] Cng for dev-ttyS0PU.device (10s / 1: 1min 30s) PID: 362 Comm: syz-executor753 Not tainted 5.4.93-syzkaller-00590-g1e5f5a14faba #0 [ 17.562093][ T362] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 17.562103][ T362] Call Trace: [ 17.610103][ T362] dump_stack+0x1dd/0x24e [ 17.614420][ T362] ? devkmsg_release+0x11c/0x11c [ 17.619344][ T362] ? show_regs_print_info+0x12/0x12 [ 17.624531][ T362] ? vprintk_store+0x690/0x690 [ 17.629262][ T362] ? console_trylock+0x166/0x1c0 [ 17.634237][ T362] ? umount_check+0x120/0x1c0 [ 17.638901][ T362] ? umount_check+0x120/0x1c0 [ 17.643563][ T362] panic+0x285/0x750 [ 17.647447][ T362] ? __warn+0xfa/0x200 [ 17.651586][ T362] ? nmi_panic+0x90/0x90 [ 17.655805][ T362] ? devkmsg_release+0x11c/0x11c [ 17.660731][ T362] ? is_valid_bugaddr+0xa0/0x150 [ 17.665639][ T362] ? umount_check+0x179/0x1c0 [ 17.670287][ T362] __warn+0x1fd/0x200 [ 17.674255][ T362] ? umount_check+0x179/0x1c0 [ 17.678915][ T362] report_bug+0x390/0x4d0 [ 17.683220][ T362] ? umount_check+0x179/0x1c0 [ 17.688308][ T362] do_invalid_op+0x6e/0x110 [ 17.692805][ T362] invalid_op+0x1e/0x30 [ 17.696932][ T362] RIP: 0010:umount_check+0x179/0x1c0 [ 17.702181][ T362] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 63 55 1d 85 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 07 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 [ 17.722280][ T362] RSP: 0018:ffff8881e865fa20 EFLAGS: 00010292 [ 17.728332][ T362] RAX: 000000000000004f RBX: ffffffff8548f7d0 RCX: 5ff58196cf992900 [ 17.736287][ T362] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 17.744230][ T362] RBP: ffff8881e946f420 R08: ffffffff814e47a1 R09: ffffed103ee25e08 [ 17.752394][ T362] R10: ffffed103ee25e08 R11: 0000000000000000 R12: dffffc0000000000 [ 17.760341][ T362] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881eff0dbb0 [ 17.768316][ T362] ? vprintk_emit+0x3b1/0x500 [ 17.772985][ T362] d_walk+0x2e9/0x570 [ 17.776947][ T362] ? __d_free+0x20/0x20 [ 17.781101][ T362] shrink_dcache_for_umount+0x8a/0x1b0 [ 17.786554][ T362] generic_shutdown_super+0x63/0x2a0 [ 17.791806][ T362] kill_anon_super+0x36/0x60 [ 17.796382][ T362] v9fs_kill_super+0x48/0x90 [ 17.800964][ T362] deactivate_locked_super+0xaf/0x100 [ 17.806671][ T362] deactivate_super+0x1b8/0x280 [ 17.811508][ T362] ? dput+0x5e/0x5e0 [ 17.815372][ T362] ? deactivate_locked_super+0x100/0x100 [ 17.820973][ T362] ? dput+0x4fb/0x5e0 [ 17.824942][ T362] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 17.830035][ T362] ? find_next_bit+0xd8/0x120 [ 17.834681][ T362] cleanup_mnt+0x432/0x4e0 [ 17.839075][ T362] task_work_run+0x176/0x1a0 [ 17.843638][ T362] do_exit+0xcc2/0x2830 [ 17.847774][ T362] ? mm_update_next_owner+0x5d0/0x5d0 [ 17.853133][ T362] ? __up_read+0x6f/0x1b0 [ 17.857445][ T362] ? __down_read+0x210/0x210 [ 17.862013][ T362] ? check_preemption_disabled+0x15a/0x330 [ 17.867822][ T362] ? debug_smp_processor_id+0x20/0x20 [ 17.873161][ T362] do_group_exit+0x155/0x2b0 [ 17.877733][ T362] ? do_user_addr_fault+0x6dd/0xb10 [ 17.882898][ T362] __do_sys_exit_group+0x13/0x20 [ 17.887804][ T362] __se_sys_exit_group+0x10/0x10 [ 17.892716][ T362] __x64_sys_exit_group+0x37/0x40 [ 17.897725][ T362] do_syscall_64+0xcb/0x150 [ 17.902194][ T362] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 17.908055][ T362] RIP: 0033:0x443829 [ 17.911941][ T362] Code: Bad RIP value. [ 17.915974][ T362] RSP: 002b:00007ffeab276988 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 17.924366][ T362] RAX: ffffffffffffffda RBX: 00000000004b53b0 RCX: 0000000000443829 [ 17.932321][ T362] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 17.940274][ T362] RBP: 0000000000000001 R08: ffffffffffffffc4 R09: 0000000000000000 [ 17.948217][ T362] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b53b0 [ 17.956155][ T362] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 17.964774][ T362] Kernel Offset: disabled [ 17.969118][ T362] Rebooting in 86400 seconds..