Warning: Permanently added '10.128.0.119' (ECDSA) to the list of known hosts. [* ] 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)[ 19.941636][ T22] audit: type=1400 audit(1615761109.036:8): avc: denied { execmem } for pid=347 comm="syz-executor996" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 19.983864][ T348] incfs: Can't find or create .index dir in ./file0 [ 19.992064][ T348] BUG: Dentry ffff8881eff3caa0{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 20.001985][ T348] ------------[ cut here ]------------ [ 20.007629][ T348] WARNING: CPU: 1 PID: 348 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 20.016738][ T348] Modules linked in: [ 20.020806][ T348] CPU: 1 PID: 348 Comm: syz-executor996 Not tainted 5.4.105-syzkaller-00511-g6ede59f3f8d0 #0 [ 20.031600][ T348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.041868][ T348] RIP: 0010:umount_check+0x179/0x1c0 [ 20.047312][ T348] 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 b7 e9 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 [ 20.069622][ T348] RSP: 0018:ffff8881e9237a58 EFLAGS: 00010282 [ 20.075845][ T348] RAX: 0000000000000055 RBX: ffffffff85fc50e0 RCX: e7bf16caad5fe600 [ 20.083809][ T348] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 20.091847][ T348] RBP: ffff8881e91cd420 R08: ffffffff814e8047 R09: ffffed103ede5e08 [ 20.102614][ T348] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 20.111196][ T348] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881eff3caa0 [ 20.119690][ T348] FS: 00000000021e03c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 20.129048][ T348] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.136044][ T348] CR2: 00000000004b51d0 CR3: 00000001ee000000 CR4: 00000000001406e0 [ 20.144470][ T348] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.144474][ T348] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.144477][ T348] Call Trace: [ 20.144492][ T348] d_walk+0x2d9/0x540 [ 20.144500][ T348] ? __d_free+0x20/0x20 [ 20.144513][ T348] shrink_dcache_for_umount+0x8a/0x1a0 [ 20.178234][ T348] generic_shutdown_super+0x63/0x2a0 [ 20.183796][ T348] kill_block_super+0x79/0xd0 [ 20.188655][ T348] deactivate_locked_super+0xaf/0x100 [ 20.194380][ T348] deactivate_super+0x1b3/0x270 [ 20.199317][ T348] ? deactivate_locked_super+0x100/0x100 [ 20.205118][ T348] ? dput+0x4de/0x5d0 [ 20.209184][ T348] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 20.214471][ T348] ? find_next_bit+0xc6/0x110 [ [ 20.219627][ T348] cleanup_mnt+0x432/0x4e0 [ 20.225634][ T348] task_work_run+0x186/0x1b0 **[ 20.230245][ T348] do_exit+0xcb9/0x2bf0 [ 20.235687][ T348] ? mm_update_next_owner+0x5c0/0x5c0 [ 20.242005][ T348] ? __up_read+0x6f/0x1b0 [ 20.246675][ T348] ? __down_read+0x210/0x210 ] [ 20.251358][ T348] ? check_preemption_disabled+0x154/0x330 [ 20.257784][ T348] ? debug_smp_processor_id+0x20/0x20 [ 20.263524][ T348] do_group_exit+0x15c/0x2c0 [ 20.268459][ T348] ? do_user_addr_fault+0x6b0/0xb40 [ 20.274090][ T348] __do_sys_exit_group+0x13/0x20 A start job is r[ 20.279333][ T348] __se_sys_exit_group+0x10/0x10 [ 20.285843][ T348] __x64_sys_exit_group+0x37/0x40 unning for dev-t[ 20.291082][ T348] do_syscall_64+0xcb/0x1e0 [ 20.297474][ T348] entry_SYSCALL_64_after_hwframe+0x44/0xa9 tyS0.device (12s[ 20.304098][ T348] RIP: 0033:0x4434b9 [ 20.309619][ T348] Code: Bad RIP value. [ 20.313876][ T348] RSP: 002b:00007fff9db56068 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 20.323089][ T348] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 00000000004434b9 [ 20.331516][ T348] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 20.339955][ T348] RBP: 0000000000000001 R08: ffffffffffffffc4 R09: 0000000000000000 [ 20.348317][ T348] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 20.356969][ T348] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 20.365237][ T348] ---[ end trace aaa036aab8e61e5b ]--- / 1min 30s)[ 20.377458][ T348] BUG: Dentry ffff8881eff3caa0{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 20.388735][ T348] ------------[ cut here ]------------ [ 20.394373][ T348] WARNING: CPU: 0 PID: 348 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 20.403787][ T348] Modules linked in: [ 20.407749][ T348] CPU: 0 PID: 348 Comm: syz-executor996 Tainted: G W 5.4.105-syzkaller-00511-g6ede59f3f8d0 #0 [ 20.420253][ T348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.431734][ T348] RIP: 0010:umount_check+0x179/0x1c0 [ 20.437083][ T348] 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 b7 e9 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 [ 20.456936][ T348] RSP: 0018:ffff8881e9237a58 EFLAGS: 00010282 [ 20.462990][ T348] RAX: 0000000000000055 RBX: ffffffff85fc50e0 RCX: e7bf16caad5fe600 [ 20.470937][ T348] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 20.479558][ T348] RBP: ffff8881e91cd420 R08: ffffffff814e8047 R09: ffffed103edc5e08 [ 20.489964][ T348] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 20.498468][ T348] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881eff3caa0 [ 20.506973][ T348] FS: 00000000021e03c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 20.516503][ T348] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.523523][ T348] CR2: 0000559df7fc7a20 CR3: 00000001f1008000 CR4: 00000000001406f0 [ 20.532458][ T348] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.540597][ T348] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.549416][ T348] Call Trace: [ 20.553020][ T348] d_walk+0x2d9/0x540 [ 20.557450][ T348] ? __d_free+0x20/0x20 [ 20.562210][ T348] shrink_dcache_for_umount+0x8a/0x1a0 [ 20.568562][ T348] generic_shutdown_super+0x63/0x2a0 [ 20.574835][ T348] kill_block_super+0x79/0xd0 [ 20.579793][ T348] deactivate_locked_super+0xaf/0x100 [ 20.585672][ T348] deactivate_super+0x1b3/0x270 [ 20.591081][ T348] ? deactivate_locked_super+0x100/0x100 [ 20.597215][ T348] ? dput+0x4de/0x5d0 [ 20.601743][ T348] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 20.607358][ T348] ? find_next_bit+0xc6/0x110 [ 20.612492][ T348] cleanup_mnt+0x432/0x4e0 [ 20.617195][ T348] task_work_run+0x186/0x1b0 [ 20.622404][ T348] do_exit+0xcb9/0x2bf0 [ 20.628049][ T348] ? mm_update_next_owner+0x5c0/0x5c0 [ 20.633861][ T348] ? __up_read+0x6f/0x1b0 [ 20.638194][ T348] ? __down_read+0x210/0x210 [ 20.643039][ T348] ? check_preemption_disabled+0x154/0x330 [ 20.648999][ T348] ? debug_smp_processor_id+0x20/0x20 [ 20.654352][ T348] do_group_exit+0x15c/0x2c0 [ 20.659336][ T348] ? do_user_addr_fault+0x6b0/0xb40 [ 20.664944][ T348] __do_sys_exit_group+0x13/0x20 [ 20.670441][ T348] __se_sys_exit_group+0x10/0x10 [ 20.675371][ T348] __x64_sys_exit_group+0x37/0x40 [ 20.680818][ T348] do_syscall_64+0xcb/0x1e0 [ 20.686251][ T348] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.692653][ T348] RIP: 0033:0x4434b9 [ 20.696893][ T348] Code: Bad RIP value. [ 20.701495][ T348] RSP: 002b:00007fff9db56068 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 20.710672][ T348] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 00000000004434b9 [ 20.719305][ T348] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 20.727780][ T348] RBP: 0000000000000001 R08: ffffffffffffffc4 R09: 0000000000000000 [ 20.735946][ T348] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 20.744345][ T348] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 20.753261][ T348] ---[ end trace aaa036aab8e61e5c ]--- [ 20.761262][ T348] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...