Starting Permit User Sessions... [ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.2' (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)[ **] A start job is running for dev-ttyS0.device (13s / 1min 30s)[ 21.679464][ T22] audit: type=1400 audit(1617075570.938:8): avc: denied { execmem } for pid=340 comm="syz-executor446" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 21.715324][ T343] incfs: Can't find or create .incomplete dir in ./file0 [ 21.729077][ T343] BUG: Dentry ffff8881efb16770{i=0,n=.incomplete} still in use (1) [unmount of vfat loop0] [ 21.740138][ T343] ------------[ cut here ]------------ [ 21.746042][ T343] WARNING: CPU: 0 PID: 343 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 21.754364][ T343] Modules linked in: [ 21.758369][ T343] CPU: 0 PID: 343 Comm: syz-executor446 Not tainted 5.4.108-syzkaller-00847-g1dc47fb418c8 #0 [ 21.768512][ T343] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.778561][ T343] RIP: 0010:umount_check+0x179/0x1c0 [ 21.783914][ T343] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 60 ec e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 37 dc af 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 [ 21.803501][ T343] RSP: 0018:ffff8881e9717738 EFLAGS: 00010282 [ 21.809582][ T343] RAX: 0000000000000059 RBX: ffffffff85fc4de0 RCX: 51f9edbe3148e600 [ 21.818587][ T343] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 21.826531][ T343] RBP: ffff8881f1695420 R08: ffffffff814e8847 R09: ffffed103edc5e08 [ 21.834474][ T343] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 21.842501][ T343] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efb16770 [ 21.842509][ T343] FS: 00007ff071676700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 21.842515][ T343] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.842520][ T343] CR2: 0000557ca9dd5a00 CR3: 00000001e136f000 CR4: 00000000001406f0 [ 21.842533][ T343] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.882052][ T343] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.890043][ T343] Call Trace: [ 21.893344][ T343] d_walk+0x2d9/0x540 [ 21.897651][ T343] ? __d_free+0x20/0x20 [ 21.901822][ T343] shrink_dcache_for_umount+0x8a/0x1a0 [ 21.907291][ T343] generic_shutdown_super+0x63/0x2a0 [[ 21.912597][ T343] kill_block_super+0x79/0xd0 [ 21.917371][ T343] deactivate_locked_super+0xaf/0x100 [ 21.922762][ T343] deactivate_super+0x1b3/0x270 [ 21.927605][ T343] ? deactivate_locked_super+0x100/0x100 *[0;1[ 21.933263][ T343] ? dput+0x4de/0x5d0 [ 21.938645][ T343] ? _raw_spin_lock_irq+0xa4/0x1b0 ;31m*[ 21.943741][ T343] ? find_next_bit+0xc6/0x110 [ 21.950927][ T343] cleanup_mnt+0x432/0x4e0 [ 21.955375][ T343] task_work_run+0x186/0x1b0 *] [ 21.959994][ T343] do_exit+0xcb9/0x2bf0 [ 21.964759][ T343] ? mm_update_next_owner+0x5c0/0x5c0 [ 21.970140][ T343] ? debug_smp_processor_id+0x20/0x20 [ 21.975611][ T343] ? stack_trace_snprint+0x150/0x150 [ 21.980899][ T343] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.986015][ T343] ? _raw_spin_lock_irqsave+0x210/0x210 A start job is r[ 21.991557][ T343] do_group_exit+0x15c/0x2c0 [ 21.997518][ T343] get_signal+0x164f/0x1fc0 unning for dev-t[ 22.002058][ T343] ? debug_smp_processor_id+0x20/0x20 [ 22.008919][ T343] ? debug_smp_processor_id+0x20/0x20 tyS0.device (14s[ 22.014432][ T343] ? switch_mm_irqs_off+0x72f/0x9a0 [ 22.020995][ T343] ? ptrace_notify+0x340/0x340 [ 22.025764][ T343] ? _raw_spin_unlock_irq+0x4a/0x60 / 1min 30s)[ 22.030963][ T343] ? finish_task_switch+0x130/0x550 [ 22.037184][ T343] ? check_preemption_disabled+0x154/0x330 [ 22.042978][ T343] do_signal+0x8d/0x610 [ 22.047104][ T343] ? signal_fault+0x1e0/0x1e0 [ 22.051764][ T343] ? ksys_mount+0xe0/0xf0 [ 22.056061][ T343] ? __x64_sys_futex+0x1d/0xf0 [ 22.060795][ T343] prepare_exit_to_usermode+0x207/0x310 [ 22.066323][ T343] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 22.072184][ T343] RIP: 0033:0x449f29 [ 22.076069][ T343] Code: Bad RIP value. [ 22.080120][ T343] RSP: 002b:00007ff071676308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 22.088510][ T343] RAX: fffffffffffffe00 RBX: 00000000004cb408 RCX: 0000000000449f29 [ 22.096467][ T343] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cb408 [ 22.104408][ T343] RBP: 00000000004cb400 R08: 0000000000000000 R09: 0000000000000000 [ 22.112347][ T343] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb40c [ 22.120305][ T343] R13: 0030656c69662f2e R14: 6e656d6572636e69 R15: 0000000000022000 [ 22.128262][ T343] ---[ end trace d96688efaafeb966 ]--- [ 22.140016][ T343] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...