Starting Permit User Sessions... Starting OpenBSD Secure Shell server... [ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty5. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.158' (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)[ 18.455076][ T22] audit: type=1400 audit(1616091442.106:8): avc: denied { execmem } for pid=334 comm="syz-executor446" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 18.484266][ T335] incfs: Can't find or create .index dir in ./file0 [ 18.493239][ T335] BUG: Dentry ffff8881efae0220{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 18.503121][ T335] ------------[ cut here ]------------ [ 18.508648][ T335] WARNING: CPU: 0 PID: 335 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 18.516938][ T335] Modules linked in: [ 18.520807][ T335] CPU: 0 PID: 335 Comm: syz-executor446 Not tainted 5.4.106-syzkaller-00698-g3941336d0e38 #0 [ 18.530918][ T335] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.540948][ T335] RIP: 0010:umount_check+0x179/0x1c0 [ 18.546217][ T335] 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 f7 df 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 [ 18.565789][ T335] RSP: 0018:ffff8881e92dfa58 EFLAGS: 00010282 [ 18.571820][ T335] RAX: 0000000000000055 RBX: ffffffff85fc50e0 RCX: 23b71ccf39e23900 [ 18.579761][ T335] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 18.587700][ T335] RBP: ffff8881e9b55420 R08: ffffffff814e88c7 R09: ffffed103edc5e08 [ 18.595661][ T335] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 18.603603][ T335] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efae0220 [ 18.611542][ T335] FS: 000000000196b3c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 18.620447][ T335] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.626998][ T335] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 18.634939][ T335] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.642877][ T335] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.650874][ T335] Call Trace: [ 18.654136][ T335] d_walk+0x2d9/0x540 [ 18.658086][ T335] ? __d_free+0x20/0x20 [ 18.662217][ T335] shrink_dcache_for_umount+0x8a/0x1a0 [ 18.667654][ T335] generic_shutdown_super+0x63/0x2a0 [ 18.672907][ T335] kill_block_super+0x79/0xd0 [ 18.677554][ T335] deactivate_locked_super+0xaf/0x100 [ 18.682907][ T335] deactivate_super+0x1b3/0x270 [ 18.687736][ T335] ? deactivate_locked_super+0x100/0x100 [ 18.693352][ T335] ? dput+0x4de/0x5d0 [ 18.697302][ T335] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.702392][ T335] ? find_next_bit+0xc6/0x110 [ 18.707059][ T335] cleanup_mnt+0x432/0x4e0 [ 18.711444][ T335] task_work_run+0x186/0x1b0 [ 18.716009][ T335] do_exit+0xcb9/0x2bf0 [ 18.720151][ T335] ? mm_update_next_owner+0x5c0/0x5c0 [ 18.725499][ T335] ? __up_read+0x6f/0x1b0 [ 18.729795][ T335] ? __down_read+0x210/0x210 [ 18.734357][ T335] ? check_preemption_disabled+0x154/0x330 [ 18.740140][ T335] ? debug_smp_processor_id+0x20/0x20 [ 18.745491][ T335] do_group_exit+0x15c/0x2c0 [ 18.750050][ T335] ? do_user_addr_fault+0x6b0/0xb40 [ 18.755222][ T335] __do_sys_exit_group+0x13/0x20 [ 18.760129][ T335] __se_sys_exit_group+0x10/0x10 [ 18.765059][ T335] __x64_sys_exit_group+0x37/0x40 [ 18.770058][ T335] do_syscall_64+0xcb/0x1e0 [ 18.774532][ T335] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.780391][ T335] RIP: 0033:0x4434c9 [ 18.784260][ T335] Code: Bad RIP value. [ 18.788293][ T335] RSP: 002b:00007ffd8ed26ee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 18.796680][ T335] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 00000000004434c9 [ 18.804632][ T335] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 18.812573][ T335] RBP: 0000000000000001 R08: ffffffffffffffc4 R09: 0000000000000000 [ 18.820516][ T335] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 18.828456][ T335] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 18.836399][ T335] ---[ end trace 8380725edb939965 ]--- [ *[0;1[ 18.842763][ T335] BUG: Dentry ffff8881efae0220{i=0,n=.index} still in use (1) [unmount of msdos loop0] ;31m*[ 18.853888][ T335] ------------[ cut here ]------------ [ 18.860664][ T335] WARNING: CPU: 1 PID: 335 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 18.868968][ T335] Modules linked in: [ 18.872848][ T335] CPU: 1 PID: 335 Comm: syz-executor446 Tainted: G W 5.4.106-syzkaller-00698-g3941336d0e38 #0 [ 18.884361][ T335] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.894406][ T335] RIP: 0010:umount_check+0x179/0x1c0 * ] A start [ 18.899759][ T335] 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 f7 df 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 [ 18.920720][ T335] RSP: 0018:ffff8881e92dfa58 EFLAGS: 00010282 [ 18.926768][ T335] RAX: 0000000000000055 RBX: ffffffff85fc50e0 RCX: 23b71ccf39e23900 [ 18.934719][ T335] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 18.942687][ T335] RBP: ffff8881e9b55420 R08: ffffffff814e88c7 R09: ffffed103ede5e08 [ 18.950640][ T335] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 18.958614][ T335] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efae0220 [ 18.966572][ T335] FS: 000000000196b3c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 18.975480][ T335] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.982045][ T335] CR2: 00007fd9f938b000 CR3: 00000001f2795000 CR4: 00000000001406e0 [ 18.990002][ T335] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.997955][ T335] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.005917][ T335] Call Trace: [ 19.009193][ T335] d_walk+0x2d9/0x540 job is running f[ 19.013162][ T335] ? __d_free+0x20/0x20 [ 19.018676][ T335] shrink_dcache_for_umount+0x8a/0x1a0 [ 19.024120][ T335] generic_shutdown_super+0x63/0x2a0 or dev-ttyS0.dev[ 19.029389][ T335] kill_block_super+0x79/0xd0 [ 19.035619][ T335] deactivate_locked_super+0xaf/0x100 ice (11s / 1min [ 19.040971][ T335] deactivate_super+0x1b3/0x270 [ 19.047185][ T335] ? deactivate_locked_super+0x100/0x100 [ 19.052799][ T335] ? dput+0x4de/0x5d0 [ 19.057631][ T335] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.062721][ T335] ? find_next_bit+0xc6/0x110 [ 19.067389][ T335] cleanup_mnt+0x432/0x4e0 [ 19.071812][ T335] task_work_run+0x186/0x1b0 30s)[ 19.076410][ T335] do_exit+0xcb9/0x2bf0 [ 19.080955][ T335] ? mm_update_next_owner+0x5c0/0x5c0 [ 19.086322][ T335] ? __up_read+0x6f/0x1b0 [ 19.090627][ T335] ? __down_read+0x210/0x210 [ 19.095198][ T335] ? check_preemption_disabled+0x154/0x330 [ 19.100988][ T335] ? debug_smp_processor_id+0x20/0x20 [ 19.106335][ T335] do_group_exit+0x15c/0x2c0 [ 19.110909][ T335] ? do_user_addr_fault+0x6b0/0xb40 [ 19.116086][ T335] __do_sys_exit_group+0x13/0x20 [ 19.120995][ T335] __se_sys_exit_group+0x10/0x10 [ 19.125915][ T335] __x64_sys_exit_group+0x37/0x40 [ 19.130918][ T335] do_syscall_64+0xcb/0x1e0 [ 19.135391][ T335] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.141318][ T335] RIP: 0033:0x4434c9 [ 19.145193][ T335] Code: Bad RIP value. [ 19.149279][ T335] RSP: 002b:00007ffd8ed26ee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 19.157673][ T335] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 00000000004434c9 [ 19.165630][ T335] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 19.173573][ T335] RBP: 0000000000000001 R08: ffffffffffffffc4 R09: 0000000000000000 [ 19.181520][ T335] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 19.190431][ T335] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 19.198374][ T335] ---[ end trace 8380725edb939966 ]--- [ 19.205420][ T335] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...