Warning: Permanently added '10.128.15.200' (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)[ 19.762034][ T22] audit: type=1400 audit(1612811104.695:8): avc: denied { execmem } for pid=336 comm="syz-executor413" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 19.795403][ T338] incfs: Can't find or create .index dir in ./file0 [ 19.802511][ T338] BUG: Dentry 000000003fc18620{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 19.812291][ T338] ------------[ cut here ]------------ [ 19.817736][ T338] WARNING: CPU: 1 PID: 338 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 19.826027][ T338] Kernel panic - not syncing: panic_on_warn set ... [ 19.832603][ T338] CPU: 1 PID: 338 Comm: syz-executor413 Not tainted 5.4.96-syzkaller-00109-g7a1cafd7d4ac #0 [ 19.842635][ T338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.852662][ T338] Call Trace: [ 19.855929][ T338] dump_stack+0x1d8/0x24e [ 19.860232][ T338] ? devkmsg_release+0x11c/0x11c [ 19.865137][ T338] ? show_regs_print_info+0x12/0x12 [ 19.870420][ T338] ? vprintk_store+0x680/0x680 [ 19.875196][ T338] ? console_trylock+0x166/0x1c0 [ 19.880108][ T338] ? umount_check+0x80/0x1c0 [ 19.884668][ T338] ? umount_check+0x80/0x1c0 [ 19.889234][ T338] panic+0x285/0x740 [ 19.893124][ T338] ? __warn+0xfa/0x200 [ 19.897163][ T338] ? nmi_panic+0x90/0x90 [ 19.901376][ T338] ? devkmsg_release+0x11c/0x11c [ 19.906283][ T338] ? is_valid_bugaddr+0xa0/0x150 [ 19.911204][ T338] ? umount_check+0x179/0x1c0 [ 19.915866][ T338] __warn+0x1f1/0x200 [ 19.919830][ T338] ? umount_check+0x179/0x1c0 [ 19.924485][ T338] report_bug+0x380/0x4d0 [ 19.928790][ T338] ? umount_check+0x179/0x1c0 [ 19.933441][ T338] do_invalid_op+0x6e/0x110 [ 19.937924][ T338] invalid_op+0x1e/0x30 [ 19.942051][ T338] RIP: 0010:umount_check+0x179/0x1c0 [ 19.947321][ T338] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 c0 ad e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 c7 4d 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 [ 19.966922][ T338] RSP: 0018:ffff8881e97c7a58 EFLAGS: 00010282 [ 19.972961][ T338] RAX: 0000000000000055 RBX: ffffffff85fc4620 RCX: 25d790601b8ce900 [ 19.980918][ T338] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 19.988860][ T338] RBP: ffff8881e97dc420 R08: ffffffff814e6127 R09: ffffed103ede5e08 [ 19.996799][ T338] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 20.004827][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881eff3b220 [ 20.012775][ T338] ? vprintk_emit+0x457/0x4c0 [ 20.017599][ T338] d_walk+0x2d9/0x540 [ 20.021550][ T338] ? __d_free+0x20/0x20 [ 20.030648][ T338] shrink_dcache_for_umount+0x8a/0x1a0 [ 20.036091][ T338] generic_shutdown_super+0x63/0x2a0 [ 20.041346][ T338] kill_block_super+0x79/0xd0 [ 20.045994][ T338] deactivate_locked_super+0xaf/0x100 [ 20.051347][ T338] deactivate_super+0x1b3/0x270 [ 20.056184][ T338] ? deactivate_locked_super+0x100/0x100 [ 20.061794][ T338] ? dput+0x4de/0x5d0 [ 20.065966][ T338] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 20.071158][ T338] ? find_next_bit+0xc6/0x110 [ 20.075893][ T338] cleanup_mnt+0x432/0x4e0 [ 20.081333][ T338] task_work_run+0x186/0x1b0 [ 20.086334][ T338] do_exit+0xcb9/0x2bf0 [ 20.091070][ T338] ? mm_update_next_owner+0x5c0/0x5c0 [ 20.096867][ T338] ? __up_read+0x6f/0x1b0 [ 20.101177][ T338] ? __down_read+0x210/0x210 [ 20.105753][ T338] ? check_preemption_disabled+0x154/0x330 [ 20.111632][ T338] ? debug_smp_processor_id+0x20/0x20 [ 20.117319][ T338] do_group_exit+0x15c/0x2c0 [ 20.121879][ T338] ? do_user_addr_fault+0x6b0/0xb40 [ 20.127045][ T338] __do_sys_exit_group+0x13/0x20 [ 20.131949][ T338] __se_sys_exit_group+0x10/0x10 [ 20.136855][ T338] __x64_sys_exit_group+0x37/0x40 [ 20.141860][ T338] do_syscall_64+0xcb/0x150 [ 20.146364][ T338] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.152270][ T338] RIP: 0033:0x4434c9 [ 20.156169][ T338] Code: Bad RIP value. [ 20.160204][ T338] RSP: 002b:00007fff13769388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 20.168581][ T338] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 00000000004434c9 [ 20.178518][ T338] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 20.186546][ T338] RBP: 0000000000000001 R08: ffffffffffffffc4 R09: 0000000000000000 [ 20.194485][ T338] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 20.202425][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 20.211254][ T338] Kernel Offset: disabled [ 20.215563][ T338] Rebooting in 86400 seconds..