Warning: Permanently added '10.128.0.227' (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)[** ] A start job is running for dev-ttyS0.device (16s / 1min 30s)[* ] A start job is running for dev-ttyS0.device (17s / 1min 30s)[** ] A start job is running for dev-ttyS0.device (17s / 1min 30s)[*** ] A start job is running for dev-ttyS0.device (18s / 1min 30s)[ *** ] A start job is running for dev-ttyS0.device (18s / 1min 30s)[ 26.773435][ T22] audit: type=1400 audit(1614613463.914:8): avc: denied { execmem } for pid=340 comm="syz-executor069" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 26.813581][ T341] FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) [ 26.823816][ T341] incfs: Can't find or create .index dir in ./file0 [ 26.831297][ T341] BUG: Dentry 00000000e9c0b7fb{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 26.841099][ T341] ------------[ cut here ]------------ [ 26.846588][ T341] WARNING: CPU: 1 PID: 341 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 26.855503][ T341] Kernel panic - not syncing: panic_on_warn set ... [ 26.862079][ T341] CPU: 1 PID: 341 Comm: syz-executor069 Not tainted 5.4.101-syzkaller-00441-g51f76f06a74d #0 [ 26.872382][ T341] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.882408][ T341] Call Trace: [ 26.885690][ T341] dump_stack+0x1d8/0x24e [ 26.890000][ T341] ? devkmsg_release+0x11c/0x11c [ 26.894906][ T341] ? show_regs_print_info+0x12/0x12 [ 26.900091][ T341] ? vprintk_store+0x680/0x680 [ 26.904833][ T341] ? console_trylock+0x166/0x1c0 [ 26.910106][ T341] ? umount_check+0x170/0x1c0 [ 26.914772][ T341] ? umount_check+0x170/0x1c0 [ 26.919420][ T341] panic+0x285/0x740 [ 26.923302][ T341] ? __warn+0xfa/0x200 [ 26.927355][ T341] ? nmi_panic+0x90/0x90 [ 26.932577][ T341] ? devkmsg_release+0x11c/0x11c [ 26.937703][ T341] ? is_valid_bugaddr+0xa0/0x150 [ 26.942641][ T341] ? umount_check+0x179/0x1c0 [ 26.947298][ T341] __warn+0x1f1/0x200 [ 26.951254][ T341] ? umount_check+0x179/0x1c0 [ 26.955901][ T341] report_bug+0x380/0x4d0 [ 26.960204][ T341] ? umount_check+0x179/0x1c0 [ 26.964849][ T341] do_invalid_op+0x6e/0x110 [ 26.969410][ T341] invalid_op+0x1e/0x30 [ 26.973565][ T341] RIP: 0010:umount_check+0x179/0x1c0 [ 26.978824][ T341] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 00 d1 e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 d7 3a 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 [ 26.998405][ T341] RSP: 0018:ffff8881e88c7a58 EFLAGS: 00010282 [ 27.004441][ T341] RAX: 0000000000000055 RBX: ffffffff85fc4f20 RCX: c4ed50d77f78ad00 [ 27.012381][ T341] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 27.020321][ T341] RBP: ffff8881de246420 R08: ffffffff814e6247 R09: ffffed103ede5e08 [ 27.028260][ T341] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 27.036219][ T341] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881effbd880 [ 27.044169][ T341] ? vprintk_emit+0x457/0x4c0 [ 27.048821][ T341] d_walk+0x2d9/0x540 [ 27.052773][ T341] ? __d_free+0x20/0x20 [ 27.056898][ T341] shrink_dcache_for_umount+0x8a/0x1a0 [ 27.062343][ T341] generic_shutdown_super+0x63/0x2a0 [ 27.067596][ T341] kill_block_super+0x79/0xd0 [ 27.072241][ T341] deactivate_locked_super+0xaf/0x100 [ 27.077684][ T341] deactivate_super+0x1b3/0x270 [ 27.082505][ T341] ? deactivate_locked_super+0x100/0x100 [ 27.088105][ T341] ? dput+0x4de/0x5d0 [ 27.093634][ T341] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 27.098713][ T341] ? find_next_bit+0xc6/0x110 [ 27.103360][ T341] cleanup_mnt+0x432/0x4e0 [ 27.107746][ T341] task_work_run+0x186/0x1b0 [ 27.112312][ T341] do_exit+0xcb9/0x2bf0 [ 27.116443][ T341] ? mm_update_next_owner+0x5c0/0x5c0 [ 27.121797][ T341] ? __up_read+0x6f/0x1b0 [ 27.126095][ T341] ? __down_read+0x210/0x210 [ 27.130712][ T341] ? check_preemption_disabled+0x154/0x330 [ 27.136529][ T341] ? debug_smp_processor_id+0x20/0x20 [ 27.141879][ T341] do_group_exit+0x15c/0x2c0 [ 27.146442][ T341] ? do_user_addr_fault+0x6b0/0xb40 [ 27.151622][ T341] __do_sys_exit_group+0x13/0x20 [ 27.156529][ T341] __se_sys_exit_group+0x10/0x10 [ 27.161435][ T341] __x64_sys_exit_group+0x37/0x40 [ 27.166442][ T341] do_syscall_64+0xcb/0x150 [ 27.170914][ T341] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 27.176782][ T341] RIP: 0033:0x442e19 [ 27.180657][ T341] Code: Bad RIP value. [ 27.184693][ T341] RSP: 002b:00007ffcbd496208 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 27.193125][ T341] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e19 [ 27.201340][ T341] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 27.209286][ T341] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 27.217230][ T341] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 27.225188][ T341] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 27.234084][ T341] Kernel Offset: disabled [ 27.238396][ T341] Rebooting in 86400 seconds..