IPVS: Creating netns size=2552 id=9 IPVS: Creating netns size=2552 id=10 INFO: task syz-executor6:5424 blocked for more than 120 seconds. Not tainted 4.4.116-g17c7c49 #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor6 D ffff8800aaf4f8c8 28320 5424 3846 0x00000002 ffff8800aaf4f8c8 0000000000000000 0000000000000000 0000000000000000 0000000000000001 ffff8800aaf4f800 ffff8801db31fdb8 ffff8801db31fde0 ffff8801db31f4d8 ffff8800aafa0000 ffff8800aa9c4800 0000000000000000 Call Trace: [] schedule+0x7a/0x1b0 kernel/sched/core.c:3353 [] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3386 [] __mutex_lock_common kernel/locking/mutex.c:582 [inline] [] mutex_lock_nested+0x306/0x850 kernel/locking/mutex.c:621 [] odev_release+0x4a/0x70 sound/core/seq/oss/seq_oss.c:151 [] __fput+0x233/0x6d0 fs/file_table.c:208 [] ____fput+0x15/0x20 fs/file_table.c:244 [] task_work_run+0x104/0x180 kernel/task_work.c:115 [] exit_task_work include/linux/task_work.h:21 [inline] [] do_exit+0x82a/0x2a10 kernel/exit.c:755 [] do_group_exit+0x108/0x320 kernel/exit.c:885 [] get_signal+0x4f2/0x1550 kernel/signal.c:2317 [] do_signal+0x8b/0x1d40 arch/x86/kernel/signal.c:712 [] exit_to_usermode_loop+0x11a/0x160 arch/x86/entry/common.c:247 [] prepare_exit_to_usermode arch/x86/entry/common.c:282 [inline] [] syscall_return_slowpath+0x1b5/0x1f0 arch/x86/entry/common.c:347 [] int_ret_from_sys_call+0x25/0xa3 INFO: lockdep is turned off. Sending NMI to all CPUs: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.116-g17c7c49 #17 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffffffff84217840 task.stack: ffffffff84200000 RIP: 0010:[] [] native_write_msr_safe+0xa/0x10 arch/x86/include/asm/msr.h:95 RSP: 0018:ffff8801c640fa00 EFLAGS: 00000007 RAX: 00000000da408700 RBX: ffff8801c6430000 RCX: 00000000c0000100 RDX: 0000000000007f9a RSI: 00000000da408700 RDI: 00000000c0000100 RBP: ffff8801c640fa00 R08: ffffffff838443e0 R09: 0000000000000000 R10: 0000000000000000 R11: 1ffffffff0840f76 R12: ffffffff84217840 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f9ada408700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c428661010 CR3: 00000001d1d26000 CR4: 0000000000160670 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801c640fac0 ffffffff8100b266 0000000000000046 ffff8801c6430060 1ffff10038c81f47 ffff8801db208840 ffff880100000001 0000000041b58ab3 ffffffff83fa1ef2 ffffffff8100ad60 ffff8800adfce300 ffff8801c64304a0 Call Trace: dCode: 00 55 89 f9 48 89 e5 0f 32 31 ff 48 c1 e2 20 89 3e 5d 48 09 d0 c3 90 66 2e 0f 1f 84 00 00 00 00 00 55 89 f0 89 f9 48 89 e5 0f 30 <31> c0 5d c3 66 90 55 89 f9 48 89 e5 0f 33 48 c1 e2 20 5d 48 09 NMI backtrace for cpu 1 CPU: 1 PID: 485 Comm: khungtaskd Not tainted 4.4.116-g17c7c49 #17 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8800baca1800 task.stack: ffff8800bac48000 RIP: 0010:[] [] native_apic_mem_write arch/x86/include/asm/apic.h:94 [inline] RIP: 0010:[] [] __default_send_IPI_dest_field arch/x86/include/asm/ipi.h:119 [inline] RIP: 0010:[] [] _flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:61 [inline] RIP: 0010:[] [] flat_send_IPI_mask+0xf7/0x1a0 arch/x86/kernel/apic/apic_flat_64.c:69 RSP: 0018:ffff8800bac4fcb8 EFLAGS: 00000046 RAX: 0000000003000000 RBX: 0000000000000c00 RCX: ffffffff8126a2f2 RDX: 0000000000000c00 RSI: 0000000000000002 RDI: ffffffffff5fb300 RBP: ffff8800bac4fce0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: fffffbfff0ad7e24 R12: 0000000000000246 R13: 0000000000000003 R14: ffffffff8426f3e0 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fed1f910000 CR3: 00000001d1d26000 CR4: 0000000000160670 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff8426f3e0 ffffffff847ef800 fffffbfff08fd9b4 dffffc0000000000 ffff8801db31bca0 ffff8800bac4fd00 ffffffff810b99eb ffffffff839f61c0 0000000000000003 ffff8800bac4fd60 ffffffff81d0eed4 0000000000000001 Call Trace: [] nmi_raise_cpu_backtrace+0x5b/0x70 arch/x86/kernel/apic/hw_nmi.c:33 [] nmi_trigger_all_cpu_backtrace+0x4a4/0x550 lib/nmi_backtrace.c:85 [] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 [] trigger_all_cpu_backtrace include/linux/nmi.h:44 [inline] [] check_hung_task kernel/hung_task.c:125 [inline] [] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline] [] watchdog+0x6fa/0xae0 kernel/hung_task.c:238 [] kthread+0x268/0x300 kernel/kthread.c:211 [] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:506 Code: b3 5f ff f6 c4 10 75 e1 44 89 e8 c1 e0 18 89 04 25 10 b3 5f ff 44 89 fa 09 da 80 cf 04 41 83 ff 02 0f 44 d3 89 14 25 00 b3 5f ff <41> f7 c4 00 02 00 00 74 1a e8 7b 2f 17 00 4c 89 e7 57 9d 0f 1f