[14599] 0 14599 17601 8197 25 3 0 1000 syz-executor3 [14603] 0 14603 17634 8199 25 3 0 1000 syz-executor3 [14620] 0 14620 17601 8197 25 3 0 1000 syz-executor3 [14623] 0 14623 17634 8199 25 3 0 1000 syz-executor3 [14637] 0 14637 17601 8197 25 3 0 1000 syz-executor3 INFO: task syz-executor5:5333 blocked for more than 140 seconds. [14666] 0 14666 17601 8196 24 3 0 1000 syz-executor3 Not tainted 4.14.91+ #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D29936 5333 1859 0x00000004 [14669] 0 14669 17634 8199 25 3 0 1000 syz-executor3 Call Trace: [14679] 0 14679 17601 8197 24 3 0 1000 syz-executor3 [14683] 0 14683 17634 8198 24 3 0 1000 syz-executor3 [14705] 0 14705 17601 8196 24 3 0 1000 syz-executor3 [14710] 0 14710 17634 8199 25 3 0 1000 syz-executor3 [14730] 0 14730 17601 8197 25 3 0 1000 syz-executor3 [14734] 0 14734 17634 8199 25 3 0 1000 syz-executor3 schedule+0x7f/0x1b0 kernel/sched/core.c:3490 [14748] 0 14748 17601 8232 25 4 0 1000 syz-executor4 __lock_sock+0x11d/0x210 net/core/sock.c:2237 [14750] 0 14750 17601 8196 24 3 0 1000 syz-executor3 [14754] 0 14754 17634 8199 25 3 0 1000 syz-executor3 [14768] 0 14768 17601 8196 24 3 0 1000 syz-executor3 [14794] 0 14794 17601 8196 24 3 0 1000 syz-executor3 [14799] 0 14799 17634 8200 25 3 0 1000 syz-executor3 [14811] 0 14811 17601 8196 24 3 0 1000 syz-executor3 [14831] 0 14831 17601 8196 24 3 0 1000 syz-executor3 [14836] 0 14836 17634 8198 24 3 0 1000 syz-executor3 [14851] 0 14851 17601 8197 25 3 0 1000 syz-executor3 [14854] 0 14854 17634 8199 25 3 0 1000 syz-executor3 [14866] 0 14866 17601 8196 24 3 0 1000 syz-executor3 [14885] 0 14885 17601 8197 25 3 0 1000 syz-executor3 lock_sock_nested+0xe3/0x100 net/core/sock.c:2758 [14889] 0 14889 17667 8238 25 4 0 1000 syz-executor4 [14935] 0 14935 17667 8201 25 3 0 1000 syz-executor3 [14945] 0 14945 17601 8197 25 3 0 1000 syz-executor3 [14948] 0 14948 17634 8199 25 3 0 1000 syz-executor3 lock_sock include/net/sock.h:1452 [inline] packet_setsockopt+0x4d8/0x2680 net/packet/af_packet.c:3671 [14980] 0 14980 17601 8199 25 3 0 1000 syz-executor3 [14982] 0 14982 17634 8201 25 3 0 1000 syz-executor3 [14999] 0 14999 17601 8197 25 3 0 1000 syz-executor3 [15003] 0 15003 17634 8200 25 3 0 1000 syz-executor3 [15029] 0 15029 17601 8197 25 3 0 1000 syz-executor3 [15055] 0 15055 17601 8197 25 3 0 1000 syz-executor3 SYSC_setsockopt net/socket.c:1864 [inline] SyS_setsockopt+0x132/0x220 net/socket.c:1843 [15061] 0 15061 17634 8199 25 3 0 1000 syz-executor3 [15081] 0 15081 17601 8198 25 3 0 1000 syz-executor3 [15112] 0 15112 17601 8196 24 3 0 1000 syz-executor3 [15116] 0 15116 17634 8199 25 3 0 1000 syz-executor3 [15127] 0 15127 17601 8197 25 3 0 1000 syz-executor3 [15129] 0 15129 17634 8199 25 3 0 1000 syz-executor3 [15145] 0 15145 17601 8197 25 3 0 1000 syz-executor3 [15177] 0 15177 17601 8198 25 3 0 1000 syz-executor3 [15200] 0 15200 17601 8196 24 3 0 1000 syz-executor3 [15209] 0 15209 17634 8198 24 3 0 1000 syz-executor3 [15245] 0 15245 17601 8197 25 3 0 1000 syz-executor3 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4579b9 [15272] 0 15272 17634 8200 25 3 0 1000 syz-executor3 RSP: 002b:00007fa07326bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [15285] 0 15285 17601 8196 24 3 0 1000 syz-executor3 [15348] 0 15348 17601 8196 24 3 0 1000 syz-executor3 [15353] 0 15353 17634 8198 24 3 0 1000 syz-executor3 [15369] 0 15369 17601 8197 25 3 0 1000 syz-executor3 [15373] 0 15373 17634 8199 25 3 0 1000 syz-executor3 [15429] 0 15429 17601 8196 23 3 0 1000 syz-executor3 [15446] 0 15446 17601 8197 25 3 0 1000 syz-executor3 [15448] 0 15448 17634 8199 25 3 0 1000 syz-executor3 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004579b9 [15473] 0 15473 17601 8196 24 3 0 1000 syz-executor3 [15475] 0 15475 17634 8199 25 3 0 1000 syz-executor3 [15513] 0 15513 17601 8197 25 3 0 1000 syz-executor3 RDX: 0000000000000005 RSI: 0000000000000107 RDI: 0000000000000005 [15525] 0 15525 17667 8201 25 3 0 1000 syz-executor3 RBP: 000000000073bfa0 R08: 0000000000000010 R09: 0000000000000000 [15558] 0 15558 17634 8199 25 3 0 1000 syz-executor3 R10: 0000000020000200 R11: 0000000000000246 R12: 00007fa07326c6d4 [15567] 0 15567 17667 8201 25 3 0 1000 syz-executor3 [15585] 0 15585 17601 8196 24 3 0 1000 syz-executor3 [15598] 0 15598 17601 8196 24 3 0 1000 syz-executor3 [15609] 0 15609 17601 8196 24 3 0 1000 syz-executor3 [15612] 0 15612 17634 8198 24 3 0 1000 syz-executor3 [15627] 0 15627 17601 8196 24 3 0 1000 syz-executor3 [15632] 0 15632 17634 8198 24 3 0 1000 syz-executor3 [15653] 0 15653 17601 8197 25 3 0 1000 syz-executor3 R13: 00000000004c581b R14: 00000000004da098 R15: 00000000ffffffff [15708] 0 15708 17601 8197 25 3 0 1000 syz-executor3 INFO: task syz-executor5:5341 blocked for more than 140 seconds. Not tainted 4.14.91+ #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [15714] 0 15714 17634 8199 25 3 0 1000 syz-executor3 syz-executor5 D29464 5341 1859 0x00000004 [15732] 0 15732 17601 8196 24 3 0 1000 syz-executor3 Call Trace: [15736] 0 15736 17634 8200 25 3 0 1000 syz-executor3 [15762] 0 15762 17601 8197 25 3 0 1000 syz-executor3 [15765] 0 15765 17634 8199 25 3 0 1000 syz-executor3 [15791] 0 15791 17601 8198 25 3 0 1000 syz-executor3 [15793] 0 15793 17634 8199 25 3 0 1000 syz-executor3 [15812] 0 15812 17601 8197 25 3 0 1000 syz-executor3 [15817] 0 15817 17634 8199 25 3 0 1000 syz-executor3 [15829] 0 15829 17601 8198 25 3 0 1000 syz-executor5 schedule+0x7f/0x1b0 kernel/sched/core.c:3490 __lock_sock+0x11d/0x210 net/core/sock.c:2237 lock_sock_nested+0xe3/0x100 net/core/sock.c:2758 lock_sock include/net/sock.h:1452 [inline] packet_setsockopt+0x4d8/0x2680 net/packet/af_packet.c:3671 [15833] 0 15833 17601 8199 25 3 0 1000 syz-executor3 [15848] 0 15848 17601 8198 25 3 0 1000 syz-executor5 [15855] 0 15855 17601 8197 25 3 0 1000 syz-executor3 [15859] 0 15859 17634 8199 25 3 0 1000 syz-executor3 [15875] 0 15875 17601 8197 24 3 0 1000 syz-executor3 [15878] 0 15878 17634 8199 25 3 0 1000 syz-executor3 SYSC_setsockopt net/socket.c:1864 [inline] SyS_setsockopt+0x132/0x220 net/socket.c:1843 [15895] 0 15895 17601 8197 25 3 0 1000 syz-executor3 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4579b9 RSP: 002b:00007fa073229c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [15900] 0 15900 17634 8199 25 3 0 1000 syz-executor3 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004579b9 RDX: 0000000000000005 RSI: 0000000000000107 RDI: 0000000000000008 [15921] 0 15921 17601 8197 25 3 0 1000 syz-executor3 RBP: 000000000073c0e0 R08: 0000000000000010 R09: 0000000000000000 [15960] 0 15960 17601 8197 25 3 0 1000 syz-executor3 R10: 0000000020000200 R11: 0000000000000246 R12: 00007fa07322a6d4 R13: 00000000004c581b R14: 00000000004da098 R15: 00000000ffffffff [15964] 0 15964 17634 8199 25 3 0 1000 syz-executor3 Showing all locks held in the system: [15975] 0 15975 17601 8196 24 3 0 1000 syz-executor3 2 locks held by init/1: #0: (&mm->mmap_sem){++++}, at: [] __do_page_fault+0x26d/0xb60 arch/x86/mm/fault.c:1354 #1: (&ei->i_mmap_sem){++++}, at: [] ext4_filemap_fault+0x75/0xb0 fs/ext4/inode.c:6178 1 lock held by khungtaskd/23: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x74/0x20f kernel/locking/lockdep.c:4541 [15977] 0 15977 17634 8198 24 3 0 1000 syz-executor3 2 locks held by cron/1679: #0: (&mm->mmap_sem){++++}, at: [] __do_page_fault+0x26d/0xb60 arch/x86/mm/fault.c:1354 #1: (&ei->i_mmap_sem){++++}, at: [] ext4_filemap_fault+0x75/0xb0 fs/ext4/inode.c:6178 2 locks held by getty/1755: #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x20/0x80 drivers/tty/tty_ldisc.c:275 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1ff/0x1700 drivers/tty/n_tty.c:2156 2 locks held by udevd/22441: #0: (&mm->mmap_sem){++++}, at: [] __do_page_fault+0x26d/0xb60 arch/x86/mm/fault.c:1354 #1: (&ei->i_mmap_sem){++++}, at: [] ext4_filemap_fault+0x75/0xb0 fs/ext4/inode.c:6178 2 locks held by kworker/u4:10/790: #0: ("events_unbound"){+.+.}, at: [] process_one_work+0x784/0x1670 kernel/workqueue.c:2085 #1: ((&sub_info->work)){+.+.}, at: [] process_one_work+0x7bc/0x1670 kernel/workqueue.c:2089 1 lock held by udevd/10278: #0: (&mm->mmap_sem){++++}, at: [] __do_page_fault+0x26d/0xb60 arch/x86/mm/fault.c:1354 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.91+ #30 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xb9/0x11b lib/dump_stack.c:53 nmi_cpu_backtrace.cold.0+0x47/0x85 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x121/0x146 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:196 [inline] watchdog+0x574/0xa70 kernel/hung_task.c:252 kthread+0x348/0x420 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5282 Comm: getty Not tainted 4.14.91+ #30 task: ffff88819bb09780 task.stack: ffff888045df8000 RIP: 0010:__lock_acquire+0x420/0x4320 kernel/locking/lockdep.c:3434 RSP: 0000:ffff888045dff210 EFLAGS: 00000002 RAX: 0000000000000004 RBX: 0000000000000234 RCX: 0000000000000004 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88819bb0a04c RBP: ffff888045dff400 R08: 0000000000000001 R09: 0000000000000000 R10: ffff88819bb0a028 R11: 1ffff11033761404 R12: 0000000000000003 R13: ffff88819bb09f9c R14: 0000000000000002 R15: ffff88819bb09780 FS: 00007fe60bb05700(0000) GS:ffff8881d7600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4c648d2ba4 CR3: 0000000002d8e004 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: lock_acquire+0x10f/0x380 kernel/locking/lockdep.c:3991 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152 spin_lock include/linux/spinlock.h:317 [inline] __list_lru_count_one mm/list_lru.c:171 [inline] list_lru_count_one+0x7f/0x1d0 mm/list_lru.c:182 list_lru_shrink_count include/linux/list_lru.h:117 [inline] super_cache_count+0x18a/0x2a0 fs/super.c:144 do_shrink_slab mm/vmscan.c:328 [inline] shrink_slab.part.8+0x25c/0xa30 mm/vmscan.c:504 shrink_slab mm/vmscan.c:468 [inline] shrink_node+0x8c8/0xbf0 mm/vmscan.c:2667 shrink_zones mm/vmscan.c:2814 [inline] do_try_to_free_pages+0x349/0xde0 mm/vmscan.c:2876 try_to_free_pages+0x204/0x6b0 mm/vmscan.c:3082 __perform_reclaim mm/page_alloc.c:3593 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3614 [inline] __alloc_pages_slowpath mm/page_alloc.c:4001 [inline] __alloc_pages_nodemask+0xa8a/0x2180 mm/page_alloc.c:4210 __alloc_pages include/linux/gfp.h:461 [inline] __alloc_pages_node include/linux/gfp.h:474 [inline] alloc_pages_node include/linux/gfp.h:488 [inline] __page_cache_alloc include/linux/pagemap.h:226 [inline] page_cache_read mm/filemap.c:2286 [inline] filemap_fault+0xcdd/0x14a0 mm/filemap.c:2470 ext4_filemap_fault+0x7d/0xb0 fs/ext4/inode.c:6179 __do_fault+0x80/0x210 mm/memory.c:3194 do_read_fault mm/memory.c:3604 [inline] do_fault mm/memory.c:3730 [inline] handle_pte_fault mm/memory.c:3960 [inline] __handle_mm_fault+0x991/0x25f0 mm/memory.c:4084 handle_mm_fault+0x2f2/0x6eb mm/memory.c:4121 __do_page_fault+0x45d/0xb60 arch/x86/mm/fault.c:1425 page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1104 RIP: 6dce65d0: (null) RSP: bb0c4c8:00007fe60af40ba4 EFLAGS: 00000004 Code: c1 e1 03 83 e2 03 c1 e2 05 83 e0 1f 09 d0 89 ca 41 0f b6 4a 22 41 89 c6 44 89 c0 83 e2 03 83 e0 01 41 09 f6 c1 e0 02 45 88 72 21 <83> e1 f8 09 d1 09 c1 83 e1 f7 44 09 c9 41 88 4a 22 0f b7 55 20