INFO: task kworker/1:9:5256 blocked for more than 143 seconds. Not tainted 6.4.0-next-20230630-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:9 state:D stack:23408 pid:5256 ppid:2 flags:0x00004000 Workqueue: rcu_gp wait_rcu_exp_gp Call Trace: context_switch kernel/sched/core.c:5380 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6709 schedule+0xde/0x1a0 kernel/sched/core.c:6785 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6844 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747 rcu_exp_wait_wake+0x100/0x1670 kernel/rcu/tree_exp.h:698 process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748 kthread+0x344/0x440 kernel/kthread.c:389 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task dhcpcd:23167 blocked for more than 143 seconds. Not tainted 6.4.0-next-20230630-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack:28688 pid:23167 ppid:4694 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5380 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6709 schedule+0xde/0x1a0 kernel/sched/core.c:6785 synchronize_rcu_expedited+0x5d4/0x770 kernel/rcu/tree_exp.h:1007 synchronize_rcu+0x2f1/0x3a0 kernel/rcu/tree.c:3535 synchronize_net+0x4e/0x60 net/core/dev.c:10759 __unregister_prot_hook+0x4b3/0x5c0 net/packet/af_packet.c:380 packet_do_bind+0x994/0xe90 net/packet/af_packet.c:3238 packet_bind+0x105/0x150 net/packet/af_packet.c:3322 __sys_bind+0x1ed/0x260 net/socket.c:1792 __do_sys_bind net/socket.c:1803 [inline] __se_sys_bind net/socket.c:1801 [inline] __x64_sys_bind+0x73/0xb0 net/socket.c:1801 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff249a93677 RSP: 002b:00007fffb51179d8 EFLAGS: 00000217 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 0000558f56a24ca3 RCX: 00007ff249a93677 RDX: 0000000000000014 RSI: 00007fffb51179e8 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000558f575d46c0 R09: 0000000000200000 R10: 000000000000006d R11: 0000000000000217 R12: 0000558f575d1160 R13: 0000558f575d44d8 R14: 00007fffb51382cc R15: 0000558f575d44a4 INFO: task dhcpcd:23168 blocked for more than 144 seconds. Not tainted 6.4.0-next-20230630-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack:28336 pid:23168 ppid:4694 flags:0x00000002 Call Trace: context_switch kernel/sched/core.c:5380 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6709 schedule+0xde/0x1a0 kernel/sched/core.c:6785 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6844 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747 exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline] synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:992 synchronize_rcu+0x2f1/0x3a0 kernel/rcu/tree.c:3535 synchronize_net+0x4e/0x60 net/core/dev.c:10759 __unregister_prot_hook+0x4b3/0x5c0 net/packet/af_packet.c:380 packet_do_bind+0x994/0xe90 net/packet/af_packet.c:3238 packet_bind+0x105/0x150 net/packet/af_packet.c:3322 __sys_bind+0x1ed/0x260 net/socket.c:1792 __do_sys_bind net/socket.c:1803 [inline] __se_sys_bind net/socket.c:1801 [inline] __x64_sys_bind+0x73/0xb0 net/socket.c:1801 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff249a93677 RSP: 002b:00007fffb51179d8 EFLAGS: 00000217 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 0000558f56a24ca3 RCX: 00007ff249a93677 RDX: 0000000000000014 RSI: 00007fffb51179e8 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000558f575d46c0 R09: 0000000000200000 R10: 000000000000006d R11: 0000000000000217 R12: 0000558f575d1160 R13: 0000558f575d6368 R14: 00007fffb51382cc R15: 0000558f575d6334 INFO: task dhcpcd:23169 blocked for more than 145 seconds. Not tainted 6.4.0-next-20230630-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack:28256 pid:23169 ppid:4694 flags:0x00000002 Call Trace: context_switch kernel/sched/core.c:5380 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6709 schedule+0xde/0x1a0 kernel/sched/core.c:6785 exp_funnel_lock kernel/rcu/tree_exp.h:316 [inline] synchronize_rcu_expedited+0x6f8/0x770 kernel/rcu/tree_exp.h:992 synchronize_rcu+0x2f1/0x3a0 kernel/rcu/tree.c:3535 synchronize_net+0x4e/0x60 net/core/dev.c:10759 __unregister_prot_hook+0x4b3/0x5c0 net/packet/af_packet.c:380 packet_do_bind+0x994/0xe90 net/packet/af_packet.c:3238 packet_bind+0x105/0x150 net/packet/af_packet.c:3322 __sys_bind+0x1ed/0x260 net/socket.c:1792 __do_sys_bind net/socket.c:1803 [inline] __se_sys_bind net/socket.c:1801 [inline] __x64_sys_bind+0x73/0xb0 net/socket.c:1801 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff249a93677 RSP: 002b:00007fffb51179d8 EFLAGS: 00000217 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 0000558f56a24ca3 RCX: 00007ff249a93677 RDX: 0000000000000014 RSI: 00007fffb51179e8 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000558f575d46c0 R09: 0000000000200000 R10: 000000000000006d R11: 0000000000000217 R12: 0000558f575d1160 R13: 0000558f575d64e8 R14: 00007fffb51382cc R15: 0000558f575d64b4 INFO: task dhcpcd:23170 blocked for more than 145 seconds. Not tainted 6.4.0-next-20230630-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack:29016 pid:23170 ppid:4694 flags:0x00000002 Call Trace: context_switch kernel/sched/core.c:5380 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6709 schedule+0xde/0x1a0 kernel/sched/core.c:6785 exp_funnel_lock kernel/rcu/tree_exp.h:316 [inline] synchronize_rcu_expedited+0x6f8/0x770 kernel/rcu/tree_exp.h:992 synchronize_rcu+0x2f1/0x3a0 kernel/rcu/tree.c:3535 synchronize_net+0x4e/0x60 net/core/dev.c:10759 __unregister_prot_hook+0x4b3/0x5c0 net/packet/af_packet.c:380 packet_do_bind+0x994/0xe90 net/packet/af_packet.c:3238 packet_bind+0x105/0x150 net/packet/af_packet.c:3322 __sys_bind+0x1ed/0x260 net/socket.c:1792 __do_sys_bind net/socket.c:1803 [inline] __se_sys_bind net/socket.c:1801 [inline] __x64_sys_bind+0x73/0xb0 net/socket.c:1801 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff249a93677 RSP: 002b:00007fffb51179d8 EFLAGS: 00000217 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 0000558f56a24ca3 RCX: 00007ff249a93677 RDX: 0000000000000014 RSI: 00007fffb51179e8 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000558f575d5120 R09: 0000000000200000 R10: 000000000000006d R11: 0000000000000217 R12: 0000558f575d1160 R13: 0000558f575d4728 R14: 00007fffb51382cc R15: 0000558f575d46f4 INFO: task dhcpcd:23171 blocked for more than 146 seconds. Not tainted 6.4.0-next-20230630-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack:28688 pid:23171 ppid:4694 flags:0x00000002 Call Trace: context_switch kernel/sched/core.c:5380 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6709 schedule+0xde/0x1a0 kernel/sched/core.c:6785 exp_funnel_lock kernel/rcu/tree_exp.h:316 [inline] synchronize_rcu_expedited+0x6f8/0x770 kernel/rcu/tree_exp.h:992 synchronize_rcu+0x2f1/0x3a0 kernel/rcu/tree.c:3535 synchronize_net+0x4e/0x60 net/core/dev.c:10759 __unregister_prot_hook+0x4b3/0x5c0 net/packet/af_packet.c:380 packet_do_bind+0x994/0xe90 net/packet/af_packet.c:3238 packet_bind+0x105/0x150 net/packet/af_packet.c:3322 __sys_bind+0x1ed/0x260 net/socket.c:1792 __do_sys_bind net/socket.c:1803 [inline] __se_sys_bind net/socket.c:1801 [inline] __x64_sys_bind+0x73/0xb0 net/socket.c:1801 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff249a93677 RSP: 002b:00007fffb51179d8 EFLAGS: 00000217 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 0000558f56a24ca3 RCX: 00007ff249a93677 RDX: 0000000000000014 RSI: 00007fffb51179e8 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000558f575d5120 R09: 0000000000200000 R10: 000000000000006d R11: 0000000000000217 R12: 0000558f575d1160 R13: 0000558f575d48a8 R14: 00007fffb51382cc R15: 0000558f575d4874 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8c9a2170 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522 1 lock held by rcu_tasks_trace/14: #0: ffffffff8c9a1e70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522 1 lock held by khungtaskd/28: #0: ffffffff8c9a2d80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615 2 locks held by kworker/u4:2/41: #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2567 #1: ffffc90000b27db0 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2571 2 locks held by kworker/0:3/3749: 2 locks held by getty/4781: #0: ffff888028b54098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900015d02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xf08/0x13f0 drivers/tty/n_tty.c:2187 3 locks held by syz-fuzzer/5018: #0: ffff88814bf38410 (sb_writers#4){.+.+}-{0:0}, at: do_rmdir+0x1da/0x430 fs/namei.c:4243 #1: ffff888074940400 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:806 [inline] #1: ffff888074940400 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_rmdir+0x225/0x430 fs/namei.c:4247 #2: ffff888074a8b600 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:771 [inline] #2: ffff888074a8b600 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: vfs_rmdir.part.0+0x63/0x5a0 fs/namei.c:4189 3 locks held by kworker/0:4/5028: 2 locks held by kworker/u4:6/5149: #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2567 #1: ffffc90004fbfdb0 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2571 3 locks held by kworker/1:9/5256: #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2567 #1: ffffc9000572fdb0 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2571 #2: ffffffff8c9ae2c8 (rcu_state.exp_wake_mutex){+.+.}-{3:3}, at: rcu_exp_wait_wake+0x100/0x1670 kernel/rcu/tree_exp.h:698 4 locks held by kworker/0:13/7113: 2 locks held by kworker/0:14/7114: 2 locks held by kworker/0:0/17840: 3 locks held by kworker/0:2/18964: 2 locks held by kworker/0:5/18965: 2 locks held by kworker/0:7/18967: 4 locks held by syz-executor.5/23128: 2 locks held by dhcpcd/23167: #0: ffff888088fac130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888088fac130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 #1: ffffffff8c9ae238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #1: ffffffff8c9ae238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x64a/0x770 kernel/rcu/tree_exp.h:992 2 locks held by dhcpcd/23168: #0: ffff88802c10e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88802c10e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 #1: ffffffff8c9ae238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline] #1: ffffffff8c9ae238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:992 1 lock held by dhcpcd/23169: #0: ffff88803f7ee130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88803f7ee130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/23170: #0: ffff888084b18130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888084b18130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/23171: #0: ffff8880840f0130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880840f0130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/23172: #0: ffff88807c672130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88807c672130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-next-20230630-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xe16/0x1090 kernel/hung_task.c:379 kthread+0x344/0x440 kernel/kthread.c:389 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 23128 Comm: syz-executor.5 Not tainted 6.4.0-next-20230630-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:ip6t_do_table+0xe6e/0x1a50 net/ipv6/netfilter/ip6_tables.c:321 Code: 3c 30 00 0f 85 9b 0b 00 00 4a 03 1c e5 20 ca 37 8c 48 89 d8 49 89 dc 48 c1 e8 03 42 80 3c 30 00 0f 85 74 09 00 00 49 8b 1c 24 12 fb ff ff e8 78 42 92 f8 48 8b 3c 24 45 31 c0 ba ff ff ff ff RSP: 0018:ffffc90000006fc0 EFLAGS: 00000246 RAX: 1ffffd1ffff98a02 RBX: 0000000000120fde RCX: 0000000000000100 RDX: ffff88801a371dc0 RSI: 0000000000000301 RDI: ffffffff8c37ca20 RBP: ffff88803fe1f9b8 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000001 R12: ffffe8ffffcc5010 R13: 0000000000000002 R14: dffffc0000000000 R15: ffff88803fe1f910 FS: 00007f80a2bd0700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002001a030 CR3: 0000000085711000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline] nf_hook_slow+0xc9/0x1f0 net/netfilter/core.c:626 nf_hook+0x444/0x760 include/linux/netfilter.h:258 NF_HOOK include/linux/netfilter.h:301 [inline] br_nf_forward_ip net/bridge/br_netfilter_hooks.c:637 [inline] br_nf_forward_ip+0xb58/0x13c0 net/bridge/br_netfilter_hooks.c:578 nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline] nf_hook_slow+0xc9/0x1f0 net/netfilter/core.c:626 nf_hook+0x431/0x730 include/linux/netfilter.h:258 NF_HOOK include/linux/netfilter.h:301 [inline] __br_forward+0x19a/0x570 net/bridge/br_forward.c:115 deliver_clone net/bridge/br_forward.c:131 [inline] maybe_deliver+0x350/0x450 net/bridge/br_forward.c:189 br_flood+0x173/0x630 net/bridge/br_forward.c:235 br_handle_frame_finish+0xf89/0x1de0 net/bridge/br_input.c:210 br_nf_hook_thresh+0x2fb/0x3f0 net/bridge/br_netfilter_hooks.c:1048 br_nf_pre_routing_finish_ipv6+0x695/0xf30 net/bridge/br_netfilter_ipv6.c:148 NF_HOOK include/linux/netfilter.h:303 [inline] br_nf_pre_routing_ipv6+0x41b/0x830 net/bridge/br_netfilter_ipv6.c:178 br_nf_pre_routing+0xda4/0x1520 net/bridge/br_netfilter_hooks.c:508 nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline] nf_hook_bridge_pre net/bridge/br_input.c:272 [inline] br_handle_frame+0xac1/0x1440 net/bridge/br_input.c:417 __netif_receive_skb_core+0xa10/0x3900 net/core/dev.c:5346 __netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5450 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5566 process_backlog+0x101/0x670 net/core/dev.c:5894 __napi_poll+0xb7/0x6f0 net/core/dev.c:6460 napi_poll net/core/dev.c:6527 [inline] net_rx_action+0x8a9/0xcb0 net/core/dev.c:6660 __do_softirq+0x1d4/0x905 kernel/softirq.c:553 do_softirq.part.0+0x87/0xc0 kernel/softirq.c:454 do_softirq kernel/softirq.c:446 [inline] __local_bh_enable_ip+0x106/0x130 kernel/softirq.c:381 spin_unlock_bh include/linux/spinlock.h:395 [inline] tcp_metrics_flush_all+0x27c/0x390 net/ipv4/tcp_metrics.c:899 ops_exit_list+0x125/0x170 net/core/net_namespace.c:175 setup_net+0x64c/0xa40 net/core/net_namespace.c:362 copy_net_ns+0x334/0x6c0 net/core/net_namespace.c:491 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:228 ksys_unshare+0x449/0x920 kernel/fork.c:3437 __do_sys_unshare kernel/fork.c:3508 [inline] __se_sys_unshare kernel/fork.c:3506 [inline] __x64_sys_unshare+0x31/0x40 kernel/fork.c:3506 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f80a1e8c389 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f80a2bd0168 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f80a1fac050 RCX: 00007f80a1e8c389 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006c060000 RBP: 00007f80a1ed7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe837840ef R14: 00007f80a2bd0300 R15: 0000000000022000