Warning: Permanently added '10.128.0.40' (ECDSA) to the list of known hosts. executing program [ 457.031924][ T27] audit: type=1400 audit(1601384315.496:8): avc: denied { execmem } for pid=6874 comm="syz-executor931" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 462.032627][ T6875] block nbd0: shutting down sockets [ 487.679451][ T2462] block nbd0: Possible stuck request 0000000072a1c6e0: control (read@0,1024B). Runtime 30 seconds [ 487.690375][ T2462] block nbd0: Possible stuck request 000000009c1aa90b: control (read@1024,1024B). Runtime 30 seconds [ 487.709353][ T2462] block nbd0: Possible stuck request 000000006fd675cd: control (read@2048,1024B). Runtime 30 seconds [ 487.720523][ T2462] block nbd0: Possible stuck request 00000000481d9a5c: control (read@3072,1024B). Runtime 30 seconds [ 517.759252][ T2462] block nbd0: Possible stuck request 0000000072a1c6e0: control (read@0,1024B). Runtime 60 seconds [ 517.770432][ T2462] block nbd0: Possible stuck request 000000009c1aa90b: control (read@1024,1024B). Runtime 60 seconds [ 517.781444][ T2462] block nbd0: Possible stuck request 000000006fd675cd: control (read@2048,1024B). Runtime 60 seconds [ 517.793135][ T2462] block nbd0: Possible stuck request 00000000481d9a5c: control (read@3072,1024B). Runtime 60 seconds [ 547.839441][ T2462] block nbd0: Possible stuck request 0000000072a1c6e0: control (read@0,1024B). Runtime 90 seconds [ 547.850216][ T2462] block nbd0: Possible stuck request 000000009c1aa90b: control (read@1024,1024B). Runtime 90 seconds [ 547.869377][ T2462] block nbd0: Possible stuck request 000000006fd675cd: control (read@2048,1024B). Runtime 90 seconds [ 547.880425][ T2462] block nbd0: Possible stuck request 00000000481d9a5c: control (read@3072,1024B). Runtime 90 seconds [ 577.919565][ T2462] block nbd0: Possible stuck request 0000000072a1c6e0: control (read@0,1024B). Runtime 120 seconds [ 577.930409][ T2462] block nbd0: Possible stuck request 000000009c1aa90b: control (read@1024,1024B). Runtime 120 seconds [ 577.949484][ T2462] block nbd0: Possible stuck request 000000006fd675cd: control (read@2048,1024B). Runtime 120 seconds [ 577.962090][ T2462] block nbd0: Possible stuck request 00000000481d9a5c: control (read@3072,1024B). Runtime 120 seconds [ 607.999621][ T2462] block nbd0: Possible stuck request 0000000072a1c6e0: control (read@0,1024B). Runtime 150 seconds [ 608.011805][ T2462] block nbd0: Possible stuck request 000000009c1aa90b: control (read@1024,1024B). Runtime 150 seconds [ 608.029525][ T2462] block nbd0: Possible stuck request 000000006fd675cd: control (read@2048,1024B). Runtime 150 seconds [ 608.040732][ T2462] block nbd0: Possible stuck request 00000000481d9a5c: control (read@3072,1024B). Runtime 150 seconds [ 620.799731][ T1174] INFO: task syz-executor931:6875 blocked for more than 143 seconds. [ 620.809279][ T1174] Not tainted 5.9.0-rc7-syzkaller #0 [ 620.816669][ T1174] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 620.826913][ T1174] task:syz-executor931 state:D stack:27640 pid: 6875 ppid: 6874 flags:0x80004006 [ 620.838334][ T1174] Call Trace: [ 620.842403][ T1174] __schedule+0xec9/0x2280 [ 620.847193][ T1174] ? io_schedule_timeout+0x140/0x140 [ 620.852930][ T1174] schedule+0xd0/0x2a0 [ 620.857138][ T1174] schedule_preempt_disabled+0xf/0x20 [ 620.863668][ T1174] __mutex_lock+0x3e2/0x10e0 [ 620.868909][ T1174] ? blkdev_put+0x30/0x520 [ 620.874596][ T1174] ? mutex_lock_io_nested+0xf60/0xf60 [ 620.880800][ T1174] ? do_raw_spin_lock+0x120/0x2b0 [ 620.886240][ T1174] ? rwlock_bug.part.0+0x90/0x90 [ 620.892354][ T1174] ? locks_check_ctx_file_list+0x1d/0x110 [ 620.898496][ T1174] ? _raw_spin_unlock+0x24/0x40 [ 620.903807][ T1174] ? locks_remove_file+0x30d/0x560 [ 620.910018][ T1174] blkdev_put+0x30/0x520 [ 620.914855][ T1174] blkdev_close+0x8c/0xb0 [ 620.919967][ T1174] __fput+0x285/0x920 [ 620.924377][ T1174] ? blkdev_put+0x520/0x520 [ 620.929850][ T1174] task_work_run+0xdd/0x190 [ 620.935879][ T1174] do_exit+0xb7d/0x29f0 [ 620.940340][ T1174] ? lock_is_held_type+0xbb/0xf0 [ 620.945831][ T1174] ? find_held_lock+0x2d/0x110 [ 620.959142][ T1174] ? mm_update_next_owner+0x7a0/0x7a0 [ 620.964958][ T1174] ? get_signal+0x34f/0x1f00 [ 620.970158][ T1174] ? lock_downgrade+0x830/0x830 [ 620.975358][ T1174] ? lock_is_held_type+0xbb/0xf0 [ 620.980636][ T1174] do_group_exit+0x125/0x310 [ 620.985691][ T1174] get_signal+0x428/0x1f00 [ 620.990924][ T1174] ? nbd_ioctl+0x301/0xbc4 [ 620.996354][ T1174] arch_do_signal+0x82/0x2520 [ 621.003161][ T1174] ? add_wait_queue_exclusive+0x180/0x180 [ 621.009803][ T1174] ? generic_block_fiemap+0x60/0x60 [ 621.015403][ T1174] ? selinux_inode_getsecctx+0x90/0x90 [ 621.022955][ T1174] ? build_open_flags+0x650/0x650 [ 621.028307][ T1174] ? copy_siginfo_to_user32+0xa0/0xa0 [ 621.034491][ T1174] ? nbd_release+0x180/0x180 [ 621.039542][ T1174] ? blkdev_ioctl+0xc9/0x700 [ 621.044629][ T1174] ? lock_is_held_type+0xbb/0xf0 [ 621.050349][ T1174] ? exit_to_user_mode_prepare+0xb9/0x200 [ 621.057309][ T1174] ? check_preemption_disabled+0x50/0x130 [ 621.064735][ T1174] exit_to_user_mode_prepare+0x1ae/0x200 [ 621.071000][ T1174] syscall_exit_to_user_mode+0x7e/0x2e0 [ 621.076946][ T1174] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 621.083143][ T1174] RIP: 0033:0x445039 [ 621.087156][ T1174] Code: Bad RIP value. [ 621.091504][ T1174] RSP: 002b:00007ffdc5595ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 621.100605][ T1174] RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 0000000000445039 [ 621.108758][ T1174] RDX: 00000000ffffffff RSI: 000000000000ab03 RDI: 0000000000000003 [ 621.117216][ T1174] RBP: 00000000006cf018 R08: 00000000004002e0 R09: 00000000004002e0 [ 621.126244][ T1174] R10: 00000000004002e0 R11: 0000000000000246 R12: 0000000000402200 [ 621.136242][ T1174] R13: 0000000000402290 R14: 0000000000000000 R15: 0000000000000000 [ 621.146709][ T1174] INFO: task systemd-udevd:6879 blocked for more than 143 seconds. [ 621.154915][ T1174] Not tainted 5.9.0-rc7-syzkaller #0 [ 621.161672][ T1174] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 621.172100][ T1174] task:systemd-udevd state:D stack:26264 pid: 6879 ppid: 3932 flags:0x00004100 [ 621.181589][ T1174] Call Trace: [ 621.185072][ T1174] __schedule+0xec9/0x2280 [ 621.191031][ T1174] ? io_schedule_timeout+0x140/0x140 [ 621.196857][ T1174] ? preempt_schedule_thunk+0x16/0x18 [ 621.203044][ T1174] ? preempt_schedule_common+0x59/0xc0 [ 621.210510][ T1174] schedule+0xd0/0x2a0 [ 621.214870][ T1174] io_schedule+0xb5/0x120 [ 621.219987][ T1174] wait_on_page_bit_common+0x32a/0xe30 [ 621.226988][ T1174] ? find_get_pages_contig+0xb30/0xb30 [ 621.233075][ T1174] ? end_buffer_async_read_io+0x2f0/0x2f0 [ 621.239560][ T1174] ? __wait_on_page_locked_async+0x680/0x680 [ 621.246687][ T1174] ? alloc_pages_current+0x199/0x2a0 [ 621.252690][ T1174] ? __page_cache_alloc+0x10b/0x420 [ 621.258705][ T1174] do_read_cache_page+0x957/0x1390 [ 621.266134][ T1174] read_part_sector+0xf6/0x5af [ 621.271357][ T1174] adfspart_check_ICS+0x9d/0xc90 [ 621.277058][ T1174] ? pointer+0x970/0x970 [ 621.282087][ T1174] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 621.288503][ T1174] ? adfspart_check_ADFS+0x7f0/0x7f0 [ 621.294991][ T1174] ? snprintf+0xbb/0xf0 [ 621.299227][ T1174] ? vsprintf+0x30/0x30 [ 621.303800][ T1174] ? adfspart_check_ADFS+0x7f0/0x7f0 [ 621.309730][ T1174] blk_add_partitions+0x45c/0xe40 [ 621.315967][ T1174] bdev_disk_changed+0x1ea/0x370 [ 621.321613][ T1174] __blkdev_get+0xee4/0x1aa0 [ 621.326553][ T1174] ? freeze_bdev+0x250/0x250 [ 621.331501][ T1174] ? do_raw_spin_unlock+0x171/0x230 [ 621.336990][ T1174] blkdev_open+0x227/0x300 [ 621.341728][ T1174] do_dentry_open+0x4b9/0x11b0 [ 621.346896][ T1174] ? blkdev_get_by_path+0x100/0x100 [ 621.353518][ T1174] path_openat+0x1b9a/0x2730 [ 621.360048][ T1174] ? path_lookupat+0x830/0x830 [ 621.366622][ T1174] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 621.374526][ T1174] ? lock_is_held_type+0xbb/0xf0 [ 621.382522][ T1174] ? inet6_create+0xae0/0x1010 [ 621.388152][ T1174] do_filp_open+0x17e/0x3c0 [ 621.394404][ T1174] ? may_open_dev+0xf0/0xf0 [ 621.400045][ T1174] ? do_raw_spin_lock+0x120/0x2b0 [ 621.405375][ T1174] ? rwlock_bug.part.0+0x90/0x90 [ 621.410460][ T1174] ? _raw_spin_unlock+0x24/0x40 [ 621.416094][ T1174] ? __alloc_fd+0x28d/0x600 [ 621.421389][ T1174] do_sys_openat2+0x16d/0x420 [ 621.426997][ T1174] ? build_open_flags+0x650/0x650 [ 621.432703][ T1174] __x64_sys_open+0x119/0x1c0 [ 621.437776][ T1174] ? do_sys_open+0x140/0x140 [ 621.442873][ T1174] ? __secure_computing+0x104/0x360 [ 621.448479][ T1174] do_syscall_64+0x2d/0x70 [ 621.453580][ T1174] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 621.460652][ T1174] RIP: 0033:0x7fd8b1526840 [ 621.465475][ T1174] Code: Bad RIP value. [ 621.470510][ T1174] RSP: 002b:00007ffc6e5f3668 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 621.479863][ T1174] RAX: ffffffffffffffda RBX: 000055f1c1bb6e40 RCX: 00007fd8b1526840 [ 621.488888][ T1174] RDX: 000055f1c0593fe3 RSI: 00000000000a0800 RDI: 000055f1c1bb9b10 [ 621.498545][ T1174] RBP: 00007ffc6e5f37e0 R08: 000055f1c0593670 R09: 0000000000000010 [ 621.507410][ T1174] R10: 000055f1c0593d0c R11: 0000000000000246 R12: 00007ffc6e5f3730 [ 621.516584][ T1174] R13: 000055f1c1bb1a90 R14: 0000000000000003 R15: 000000000000000e [ 621.525922][ T1174] [ 621.525922][ T1174] Showing all locks held in the system: [ 621.534200][ T1174] 1 lock held by khungtaskd/1174: [ 621.540512][ T1174] #0: ffffffff8a067f40 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 621.551829][ T1174] 1 lock held by in:imklog/6556: [ 621.557276][ T1174] #0: ffff88809144e370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 621.568085][ T1174] 1 lock held by syz-executor931/6875: [ 621.574134][ T1174] #0: ffff88808927b6c0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x30/0x520 [ 621.584609][ T1174] 1 lock held by systemd-udevd/6879: [ 621.590410][ T1174] #0: ffff88808927b6c0 (&bdev->bd_mutex){+.+.}-{3:3}, at: __blkdev_get+0x4b8/0x1aa0 [ 621.602829][ T1174] [ 621.605380][ T1174] ============================================= [ 621.605380][ T1174] [ 621.615505][ T1174] NMI backtrace for cpu 1 [ 621.620318][ T1174] CPU: 1 PID: 1174 Comm: khungtaskd Not tainted 5.9.0-rc7-syzkaller #0 [ 621.629080][ T1174] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 621.639319][ T1174] Call Trace: [ 621.650085][ T1174] dump_stack+0x198/0x1fd [ 621.654895][ T1174] nmi_cpu_backtrace.cold+0x70/0xb1 [ 621.660321][ T1174] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 621.666935][ T1174] nmi_trigger_cpumask_backtrace+0x1b3/0x223 [ 621.673143][ T1174] watchdog+0xd7d/0x1000 [ 621.677452][ T1174] ? reset_hung_task_detector+0x30/0x30 [ 621.683770][ T1174] kthread+0x3b5/0x4a0 [ 621.688279][ T1174] ? __kthread_bind_mask+0xc0/0xc0 [ 621.693955][ T1174] ret_from_fork+0x1f/0x30 [ 621.699104][ T1174] Sending NMI from CPU 1 to CPUs 0: [ 621.706884][ C0] NMI backtrace for cpu 0 [ 621.706892][ C0] CPU: 0 PID: 3911 Comm: systemd-journal Not tainted 5.9.0-rc7-syzkaller #0 [ 621.706899][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 621.706902][ C0] RIP: 0010:0xffffffffa00185f0 [ 621.706914][ C0] Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <0f> 1f 44 00 00 55 48 89 e5 48 81 ec 00 00 00 00 53 41 55 41 56 41 [ 621.706918][ C0] RSP: 0018:ffffc90003817d88 EFLAGS: 00000246 [ 621.706927][ C0] RAX: 1ffff920001c3e06 RBX: ffff8880a7b97c00 RCX: dffffc0000000000 [ 621.706932][ C0] RDX: ffff8880a77602c0 RSI: ffffc90000e1f038 RDI: ffffc90003817e38 [ 621.706938][ C0] RBP: ffffc90000e1f000 R08: 0000000000000001 R09: 0000000000000001 [ 621.706943][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 621.706949][ C0] R13: 00000000000001a0 R14: 0000000000080042 R15: ffffc90003817e38 [ 621.706955][ C0] FS: 00007fa30091e8c0(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 [ 621.706959][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 621.706965][ C0] CR2: 00007fa2fdcde010 CR3: 00000000a8f90000 CR4: 00000000001506f0 [ 621.706970][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 621.706976][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 621.706979][ C0] Call Trace: [ 621.706983][ C0] ? __seccomp_filter+0x151/0x1550 [ 621.706987][ C0] ? seccomp_notify_ioctl+0xd90/0xd90 [ 621.706991][ C0] ? strncpy_from_user+0x2bf/0x3e0 [ 621.706994][ C0] ? filename_parentat+0x560/0x560 [ 621.706998][ C0] ? getname_flags.part.0+0x1dd/0x4f0 [ 621.707002][ C0] ? do_mkdirat+0x1d2/0x2d0 [ 621.707006][ C0] ? __secure_computing+0xfc/0x360 [ 621.707011][ C0] ? syscall_trace_enter.constprop.0+0x7e/0x250 [ 621.707014][ C0] ? do_syscall_64+0xf/0x70 [ 621.707019][ C0] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 621.708651][ T1174] Kernel panic - not syncing: hung_task: blocked tasks [ 621.922298][ T1174] CPU: 1 PID: 1174 Comm: khungtaskd Not tainted 5.9.0-rc7-syzkaller #0 [ 621.932382][ T1174] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 621.943759][ T1174] Call Trace: [ 621.948467][ T1174] dump_stack+0x198/0x1fd [ 621.953341][ T1174] panic+0x382/0x7fb [ 621.957535][ T1174] ? __warn_printk+0xf3/0xf3 [ 621.962256][ T1174] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 621.968212][ T1174] ? preempt_schedule_thunk+0x16/0x18 [ 621.974768][ T1174] ? watchdog.cold+0x5/0x16b [ 621.979568][ T1174] ? watchdog+0xa82/0x1000 [ 621.984629][ T1174] watchdog.cold+0x16/0x16b [ 621.989632][ T1174] ? reset_hung_task_detector+0x30/0x30 [ 621.996204][ T1174] kthread+0x3b5/0x4a0 [ 622.001384][ T1174] ? __kthread_bind_mask+0xc0/0xc0 [ 622.006968][ T1174] ret_from_fork+0x1f/0x30 [ 622.013787][ T1174] Kernel Offset: disabled [ 622.018688][ T1174] Rebooting in 86400 seconds..