Warning: Permanently added '10.128.0.38' (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 (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)[ **] A start job is running for dev-ttyS0.device (12s / 1min 30s)[ *] A start job is running for dev-ttyS0.device (13s / 1min 30s)[ 21.072828][ T22] audit: type=1400 audit(1619305111.800:8): avc: denied { execmem } for pid=336 comm="syz-executor284" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 21.102481][ T338] FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) [ 21.112674][ T338] incfs: Can't find or create .index dir in ./file0 [ 21.120124][ T338] BUG: Dentry ffff8881efba3550{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 21.129887][ T338] ------------[ cut here ]------------ [ 21.135348][ T338] WARNING: CPU: 1 PID: 338 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 21.143650][ T338] Modules linked in: [ 21.147528][ T338] CPU: 1 PID: 338 Comm: syz-executor284 Not tainted 5.4.114-syzkaller-00371-gaa0556d71ff1 #0 [ 21.157641][ T338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.167701][ T338] RIP: 0010:umount_check+0x179/0x1c0 [ 21.172961][ T338] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 f4 e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 67 e3 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 [ 21.192552][ T338] RSP: 0018:ffff8881e89ffa58 EFLAGS: 00010282 [ 21.198589][ T338] RAX: 0000000000000055 RBX: ffffffff85fc5400 RCX: bc52800972801000 [ 21.206536][ T338] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 21.214495][ T338] RBP: ffff8881e9207420 R08: ffffffff814e8767 R09: ffffed103ede5e08 [ 21.222471][ T338] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 21.230578][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efba3550 [ 21.238724][ T338] FS: 0000000001e39300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 21.247624][ T338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.254178][ T338] CR2: 00000000004b51d0 CR3: 00000001f4010000 CR4: 00000000001406e0 [ 21.262247][ T338] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.270189][ T338] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.278146][ T338] Call Trace: [ 21.281428][ T338] d_walk+0x2d9/0x540 [ 21.285468][ T338] ? __d_free+0x20/0x20 [ 21.289599][ T338] shrink_dcache_for_umount+0x8a/0x1a0 [ 21.295051][ T338] generic_shutdown_super+0x63/0x2a0 [ 21.300323][ T338] kill_block_super+0x79/0xd0 [ 21.304970][ T338] deactivate_locked_super+0xaf/0x100 [ 21.310311][ T338] deactivate_super+0x1b3/0x270 [ 21.315155][ T338] ? deactivate_locked_super+0x100/0x100 [ 21.320770][ T338] ? dput+0x4de/0x5d0 [ 21.324732][ T338] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.329816][ T338] ? find_next_bit+0xc6/0x110 [ 21.334488][ T338] cleanup_mnt+0x432/0x4e0 [ 21.339922][ T338] task_work_run+0x186/0x1b0 [ 21.344500][ T338] do_exit+0xcb9/0x2bf0 [ 21.348640][ T338] ? mm_update_next_owner+0x5c0/0x5c0 [ 21.354076][ T338] ? __up_read+0x6f/0x1b0 [ 21.358393][ T338] ? __down_read+0x210/0x210 [ 21.362960][ T338] ? check_preemption_disabled+0x154/0x330 [ 21.368737][ T338] ? debug_smp_processor_id+0x20/0x20 [ 21.374087][ T338] do_group_exit+0x15c/0x2c0 [ 21.378670][ T338] ? do_user_addr_fault+0x6b0/0xb40 [ 21.383842][ T338] __do_sys_exit_group+0x13/0x20 [ 21.388770][ T338] __se_sys_exit_group+0x10/0x10 [ 21.393679][ T338] __x64_sys_exit_group+0x37/0x40 [ 21.398780][ T338] do_syscall_64+0xcb/0x1e0 [ 21.403254][ T338] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 21.409169][ T338] RIP: 0033:0x442e39 [ 21.413080][ T338] Code: Bad RIP value. [ 21.417568][ T338] RSP: 002b:00007ffeb63cacd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 21.426005][ T338] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e39 [ 21.434116][ T338] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 21.442070][ T338] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 21.450019][ T338] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 21.457966][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 21.465922][ T338] ---[ end trace 656cde8e29042b9b ]--- [ *[0[ 21.472835]