INFO: task kworker/0:3:10032 blocked for more than 143 seconds. Not tainted 5.3.0-rc2 #81 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:3 D27976 10032 2 0x80004000 Workqueue: events linkwatch_event Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 linkwatch_event+0xf/0x70 net/core/link_watch.c:242 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 INFO: task syz-executor.0:14165 blocked for more than 143 seconds. Not tainted 5.3.0-rc2 #81 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D24984 14165 10580 0x20020004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 prb_calc_retire_blk_tmo net/packet/af_packet.c:527 [inline] init_prb_bdqc net/packet/af_packet.c:590 [inline] packet_set_ring+0x1662/0x1b60 net/packet/af_packet.c:4336 packet_setsockopt+0x530/0x2df0 net/packet/af_packet.c:3682 compat_packet_setsockopt+0x106/0x164 net/packet/af_packet.c:4034 __compat_sys_setsockopt+0x185/0x380 net/compat.c:384 __do_compat_sys_setsockopt net/compat.c:397 [inline] __se_compat_sys_setsockopt net/compat.c:394 [inline] __ia32_compat_sys_setsockopt+0xbd/0x150 net/compat.c:394 do_syscall_32_irqs_on arch/x86/entry/common.c:332 [inline] do_fast_syscall_32+0x27b/0xdb3 arch/x86/entry/common.c:403 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7fd79c9 Code: Bad RIP value. RSP: 002b:00000000f5dd30cc EFLAGS: 00000296 ORIG_RAX: 000000000000016e RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000107 RDX: 0000000000000005 RSI: 0000000020001000 RDI: 00000000000000c5 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.5:14176 blocked for more than 143 seconds. Not tainted 5.3.0-rc2 #81 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D26800 14176 10596 0x20020004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 prb_calc_retire_blk_tmo net/packet/af_packet.c:527 [inline] init_prb_bdqc net/packet/af_packet.c:590 [inline] packet_set_ring+0x1662/0x1b60 net/packet/af_packet.c:4336 packet_setsockopt+0x530/0x2df0 net/packet/af_packet.c:3682 compat_packet_setsockopt+0x106/0x164 net/packet/af_packet.c:4034 __compat_sys_setsockopt+0x185/0x380 net/compat.c:384 __do_compat_sys_setsockopt net/compat.c:397 [inline] __se_compat_sys_setsockopt net/compat.c:394 [inline] __ia32_compat_sys_setsockopt+0xbd/0x150 net/compat.c:394 do_syscall_32_irqs_on arch/x86/entry/common.c:332 [inline] do_fast_syscall_32+0x27b/0xdb3 arch/x86/entry/common.c:403 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f649c9 Code: Bad RIP value. RSP: 002b:00000000f5d600cc EFLAGS: 00000296 ORIG_RAX: 000000000000016e RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000107 RDX: 0000000000000005 RSI: 0000000020001000 RDI: 00000000000000c5 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.4:14179 blocked for more than 144 seconds. Not tainted 5.3.0-rc2 #81 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D24832 14179 10593 0x20024004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 exp_funnel_lock kernel/rcu/tree_exp.h:308 [inline] synchronize_rcu_expedited+0x544/0x5b0 kernel/rcu/tree_exp.h:816 synchronize_net+0x3b/0x60 net/core/dev.c:9259 dev_deactivate_many+0x507/0xc20 net/sched/sch_generic.c:1201 __dev_close_many+0x14b/0x310 net/core/dev.c:1476 dev_close_many+0x25b/0x6f0 net/core/dev.c:1514 rollback_registered_many+0x35a/0xdf0 net/core/dev.c:8173 rollback_registered+0x109/0x1d0 net/core/dev.c:8238 unregister_netdevice_queue net/core/dev.c:9285 [inline] unregister_netdevice_queue+0x1ee/0x2c0 net/core/dev.c:9278 unregister_netdevice include/linux/netdevice.h:2631 [inline] veth_newlink+0x619/0x990 drivers/net/veth.c:1350 __rtnl_newlink+0x1086/0x16c0 net/core/rtnetlink.c:3196 rtnl_newlink+0x69/0xa0 net/core/rtnetlink.c:3254 rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:5223 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5241 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __compat_sys_sendmsg net/compat.c:642 [inline] __do_compat_sys_sendmsg net/compat.c:649 [inline] __se_compat_sys_sendmsg net/compat.c:646 [inline] __ia32_compat_sys_sendmsg+0x7a/0xb0 net/compat.c:646 do_syscall_32_irqs_on arch/x86/entry/common.c:332 [inline] do_fast_syscall_32+0x27b/0xdb3 arch/x86/entry/common.c:403 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7efe9c9 Code: Bad RIP value. RSP: 002b:00000000f5cfa0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000580 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.3:14190 blocked for more than 144 seconds. Not tainted 5.3.0-rc2 #81 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28752 14190 10589 0x20020004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 __tun_chr_ioctl+0x206/0x3ef0 drivers/net/tun.c:3056 tun_chr_compat_ioctl+0x29/0x30 drivers/net/tun.c:3374 __do_compat_sys_ioctl fs/compat_ioctl.c:1052 [inline] __se_compat_sys_ioctl fs/compat_ioctl.c:998 [inline] __ia32_compat_sys_ioctl+0x195/0x620 fs/compat_ioctl.c:998 do_syscall_32_irqs_on arch/x86/entry/common.c:332 [inline] do_fast_syscall_32+0x27b/0xdb3 arch/x86/entry/common.c:403 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f369c9 Code: Bad RIP value. RSP: 002b:00000000f5d320cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000400454ca RDX: 0000000020000040 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor.2:14192 blocked for more than 145 seconds. Not tainted 5.3.0-rc2 #81 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28912 14192 10585 0x20020004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 prb_calc_retire_blk_tmo net/packet/af_packet.c:527 [inline] init_prb_bdqc net/packet/af_packet.c:590 [inline] packet_set_ring+0x1662/0x1b60 net/packet/af_packet.c:4336 packet_setsockopt+0x530/0x2df0 net/packet/af_packet.c:3682 compat_packet_setsockopt+0x106/0x164 net/packet/af_packet.c:4034 __compat_sys_setsockopt+0x185/0x380 net/compat.c:384 __do_compat_sys_setsockopt net/compat.c:397 [inline] __se_compat_sys_setsockopt net/compat.c:394 [inline] __ia32_compat_sys_setsockopt+0xbd/0x150 net/compat.c:394 do_syscall_32_irqs_on arch/x86/entry/common.c:332 [inline] do_fast_syscall_32+0x27b/0xdb3 arch/x86/entry/common.c:403 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7fbb9c9 Code: Bad RIP value. RSP: 002b:00000000f5db70cc EFLAGS: 00000296 ORIG_RAX: 000000000000016e RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000107 RDX: 0000000000000005 RSI: 0000000020001000 RDI: 00000000000000c5 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc2 #81 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0x9d0/0xef0 kernel/hung_task.c:289 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0-rc2 #81 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:reschedule_interrupt+0x0/0x20 arch/x86/entry/entry_64.S:852 Code: 66 2e 0f 1f 84 00 00 00 00 00 68 03 ff ff ff e8 d6 f0 ff ff e8 c1 23 00 00 e9 cb f1 ff ff 66 90 66 2e 0f 1f 84 00 00 00 00 00 <68> 02 ff ff ff e8 b6 f0 ff ff e8 e1 1e 00 00 e9 ab f1 ff ff 66 90 RSP: 0018:ffff8880a98dfd38 EFLAGS: 00000082 RAX: 1ffffffff11a5e45 RBX: ffff8880a98c6340 RCX: 1ffffffff134b42e RDX: dffffc0000000000 RSI: ffffffff81781b8e RDI: ffffffff873ddf2c RBP: ffff8880a98dfd98 R08: ffff8880a98c6340 R09: ffffed1015318c69 R10: ffffed1015318c68 R11: ffff8880a98c6347 R12: dffffc0000000000 R13: ffffffff89a56f78 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff73c807000 CR3: 000000009b7f8000 CR4: 00000000001406e0 Call Trace: arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:571 default_idle_call+0x84/0xb0 kernel/sched/idle.c:94 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x413/0x760 kernel/sched/idle.c:263 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:354 start_secondary+0x315/0x430 arch/x86/kernel/smpboot.c:264 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241