Warning: Permanently added '10.128.0.55' (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 (11s / 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)[ 20.188064][ T22] audit: type=1400 audit(1614557413.404:8): avc: denied { execmem } for pid=338 comm="syz-executor511" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 20.219721][ T339] incfs: Can't find or create .index dir in ./file0 [ 20.228912][ T339] BUG: Dentry 00000000a850dac3{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 20.238687][ T339] ------------[ cut here ]------------ [ 20.244145][ T339] WARNING: CPU: 1 PID: 339 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 20.252450][ T339] Kernel panic - not syncing: panic_on_warn set ... [ 20.259018][ T339] CPU: 1 PID: 339 Comm: syz-executor511 Not tainted 5.4.101-syzkaller-00441-g51f76f06a74d #0 [ 20.269179][ T339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.279201][ T339] Call Trace: [ 20.282463][ T339] dump_stack+0x1d8/0x24e [ 20.286761][ T339] ? devkmsg_release+0x11c/0x11c [ 20.291677][ T339] ? show_regs_print_info+0x12/0x12 [ 20.296840][ T339] ? vprintk_store+0x680/0x680 [ 20.301615][ T339] ? console_trylock+0x166/0x1c0 [ 20.306519][ T339] ? umount_check+0x170/0x1c0 [ 20.311162][ T339] ? umount_check+0x170/0x1c0 [ 20.315805][ T339] panic+0x285/0x740 [ 20.319664][ T339] ? __warn+0xfa/0x200 [ 20.323698][ T339] ? nmi_panic+0x90/0x90 [ 20.327919][ T339] ? devkmsg_release+0x11c/0x11c [ 20.332822][ T339] ? is_valid_bugaddr+0xa0/0x150 [ 20.337736][ T339] ? umount_check+0x179/0x1c0 [ 20.342384][ T339] __warn+0x1f1/0x200 [ 20.346344][ T339] ? umount_check+0x179/0x1c0 [ 20.350986][ T339] report_bug+0x380/0x4d0 [ 20.355289][ T339] ? umount_check+0x179/0x1c0 [ 20.359932][ T339] do_invalid_op+0x6e/0x110 [ 20.364407][ T339] invalid_op+0x1e/0x30 [ 20.368531][ T339] RIP: 0010:umount_check+0x179/0x1c0 [ 20.373780][ T339] 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 [ 20.393361][ T339] RSP: 0018:ffff8881e8d87a58 EFLAGS: 00010282 [ 20.399398][ T339] RAX: 0000000000000055 RBX: ffffffff85fc4f20 RCX: 7daed9c055d51000 [ 20.407336][ T339] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 20.415284][ T339] RBP: ffff8881f15dc420 R08: ffffffff814e6247 R09: ffffed103ede5e08 [ 20.423222][ T339] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 20.431165][ T339] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efcd8110 [ 20.439108][ T339] ? vprintk_emit+0x457/0x4c0 [ 20.443755][ T339] d_walk+0x2d9/0x540 [ 20.447704][ T339] ? __d_free+0x20/0x20 [ 20.451825][ T339] shrink_dcache_for_umount+0x8a/0x1a0 [ 20.457261][ T339] generic_shutdown_super+0x63/0x2a0 [ 20.462518][ T339] kill_block_super+0x79/0xd0 [ 20.467177][ T339] deactivate_locked_super+0xaf/0x100 [ 20.472524][ T339] deactivate_super+0x1b3/0x270 [ 20.477339][ T339] ? deactivate_locked_super+0x100/0x100 [ 20.482935][ T339] ? dput+0x4de/0x5d0 [ 20.486881][ T339] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 20.491958][ T339] ? find_next_bit+0xc6/0x110 [ 20.496698][ T339] cleanup_mnt+0x432/0x4e0 [ 20.501093][ T339] task_work_run+0x186/0x1b0 [ 20.505650][ T339] do_exit+0xcb9/0x2bf0 [ 20.509772][ T339] ? mm_update_next_owner+0x5c0/0x5c0 [ 20.515195][ T339] ? __up_read+0x6f/0x1b0 [ 20.519490][ T339] ? __down_read+0x210/0x210 [ 20.524045][ T339] ? check_preemption_disabled+0x154/0x330 [ 20.529827][ T339] ? debug_smp_processor_id+0x20/0x20 [ 20.535172][ T339] do_group_exit+0x15c/0x2c0 [ 20.539732][ T339] ? do_user_addr_fault+0x6b0/0xb40 [ 20.544985][ T339] __do_sys_exit_group+0x13/0x20 [ 20.549905][ T339] __se_sys_exit_group+0x10/0x10 [ 20.554813][ T339] __x64_sys_exit_group+0x37/0x40 [ 20.559809][ T339] do_syscall_64+0xcb/0x150 [ 20.564281][ T339] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.570170][ T339] RIP: 0033:0x4434c9 [ 20.574037][ T339] Code: Bad RIP value. [ 20.578069][ T339] RSP: 002b:00007ffd14ddd448 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 20.586457][ T339] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 00000000004434c9 [ 20.594399][ T339] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 20.602448][ T339] RBP: 0000000000000001 R08: ffffffffffffffc4 R09: 0000000000000000 [ 20.610419][ T339] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 20.618356][ T339] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 20.626942][ T339] Kernel Offset: disabled [ 20.631243][ T339] Rebooting in 86400 seconds..