TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. INFO: task syz-executor0:9230 blocked for more than 143 seconds. Not tainted 5.6.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D28088 9230 7601 0x00000004 Call Trace: context_switch kernel/sched/core.c:3380 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4080 schedule+0xc3/0x2b0 kernel/sched/core.c:4154 schedule_timeout+0x5c4/0xad0 kernel/time/timer.c:1871 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x28b/0x460 kernel/sched/completion.c:136 __flush_work+0x3ee/0x8b0 kernel/workqueue.c:3043 __cancel_work_timer+0x308/0x440 kernel/workqueue.c:3130 cancel_delayed_work_sync+0xe/0x10 kernel/workqueue.c:3262 tls_sw_cancel_work_tx+0x63/0x70 net/tls/tls_sw.c:2096 tls_sk_proto_close+0x400/0x9a0 net/tls/tls_main.c:304 inet_release+0xc6/0x1c0 net/ipv4/af_inet.c:427 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:470 __sock_release+0xc7/0x280 net/socket.c:605 sock_close+0x13/0x20 net/socket.c:1283 __fput+0x25d/0x780 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0x10e/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1be/0x210 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x53d/0x630 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411211 Code: a5 fe ff ff 48 8d 3c 18 48 8d 7f f8 48 8b 07 48 85 c0 74 0d 90 48 8d 78 08 45 31 c0 e9 4b fe ff ff 48 89 d0 e9 56 ff ff ff 48 <89> 44 24 20 48 8b 4c 24 48 48 89 0c 24 48 89 54 24 08 48 89 44 24 RSP: 002b:00007ffc15777e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffc15777d60 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor3:9233 blocked for more than 143 seconds. Not tainted 5.6.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D28088 9233 7591 0x00000004 Call Trace: context_switch kernel/sched/core.c:3380 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4080 schedule+0xc3/0x2b0 kernel/sched/core.c:4154 schedule_timeout+0x5c4/0xad0 kernel/time/timer.c:1871 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x28b/0x460 kernel/sched/completion.c:136 __flush_work+0x3ee/0x8b0 kernel/workqueue.c:3043 __cancel_work_timer+0x308/0x440 kernel/workqueue.c:3130 cancel_delayed_work_sync+0xe/0x10 kernel/workqueue.c:3262 tls_sw_cancel_work_tx+0x63/0x70 net/tls/tls_sw.c:2096 tls_sk_proto_close+0x400/0x9a0 net/tls/tls_main.c:304 inet_release+0xc6/0x1c0 net/ipv4/af_inet.c:427 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:470 __sock_release+0xc7/0x280 net/socket.c:605 sock_close+0x13/0x20 net/socket.c:1283 __fput+0x25d/0x780 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0x10e/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1be/0x210 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x53d/0x630 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411211 Code: a5 fe ff ff 48 8d 3c 18 48 8d 7f f8 48 8b 07 48 85 c0 74 0d 90 48 8d 78 08 45 31 c0 e9 4b fe ff ff 48 89 d0 e9 56 ff ff ff 48 <89> 44 24 20 48 8b 4c 24 48 48 89 0c 24 48 89 54 24 08 48 89 44 24 RSP: 002b:00007ffd99b14f50 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffd99b14e80 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000003 INFO: task syz-executor4:9238 blocked for more than 143 seconds. Not tainted 5.6.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D28088 9238 7595 0x00000004 Call Trace: context_switch kernel/sched/core.c:3380 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4080 schedule+0xc3/0x2b0 kernel/sched/core.c:4154 schedule_timeout+0x5c4/0xad0 kernel/time/timer.c:1871 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x28b/0x460 kernel/sched/completion.c:136 __flush_work+0x3ee/0x8b0 kernel/workqueue.c:3043 __cancel_work_timer+0x308/0x440 kernel/workqueue.c:3130 cancel_delayed_work_sync+0xe/0x10 kernel/workqueue.c:3262 tls_sw_cancel_work_tx+0x63/0x70 net/tls/tls_sw.c:2096 tls_sk_proto_close+0x400/0x9a0 net/tls/tls_main.c:304 inet_release+0xc6/0x1c0 net/ipv4/af_inet.c:427 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:470 __sock_release+0xc7/0x280 net/socket.c:605 sock_close+0x13/0x20 net/socket.c:1283 __fput+0x25d/0x780 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0x10e/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1be/0x210 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x53d/0x630 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411211 Code: a5 fe ff ff 48 8d 3c 18 48 8d 7f f8 48 8b 07 48 85 c0 74 0d 90 48 8d 78 08 45 31 c0 e9 4b fe ff ff 48 89 d0 e9 56 ff ff ff 48 <89> 44 24 20 48 8b 4c 24 48 48 89 0c 24 48 89 54 24 08 48 89 44 24 RSP: 002b:00007fff6dc029f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007fff6dc02920 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000004 INFO: task syz-executor5:9239 blocked for more than 144 seconds. Not tainted 5.6.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D28088 9239 7610 0x00000004 Call Trace: context_switch kernel/sched/core.c:3380 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4080 schedule+0xc3/0x2b0 kernel/sched/core.c:4154 schedule_timeout+0x5c4/0xad0 kernel/time/timer.c:1871 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x28b/0x460 kernel/sched/completion.c:136 __flush_work+0x3ee/0x8b0 kernel/workqueue.c:3043 __cancel_work_timer+0x308/0x440 kernel/workqueue.c:3130 cancel_delayed_work_sync+0xe/0x10 kernel/workqueue.c:3262 tls_sw_cancel_work_tx+0x63/0x70 net/tls/tls_sw.c:2096 tls_sk_proto_close+0x400/0x9a0 net/tls/tls_main.c:304 inet_release+0xc6/0x1c0 net/ipv4/af_inet.c:427 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:470 __sock_release+0xc7/0x280 net/socket.c:605 sock_close+0x13/0x20 net/socket.c:1283 __fput+0x25d/0x780 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0x10e/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1be/0x210 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x53d/0x630 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411211 Code: a5 fe ff ff 48 8d 3c 18 48 8d 7f f8 48 8b 07 48 85 c0 74 0d 90 48 8d 78 08 45 31 c0 e9 4b fe ff ff 48 89 d0 e9 56 ff ff ff 48 <89> 44 24 20 48 8b 4c 24 48 48 89 0c 24 48 89 54 24 08 48 89 44 24 RSP: 002b:00007ffe43be4150 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffe43be4080 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000005 INFO: task syz-executor2:9254 blocked for more than 144 seconds. Not tainted 5.6.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D28088 9254 7592 0x00004004 Call Trace: context_switch kernel/sched/core.c:3380 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4080 schedule+0xc3/0x2b0 kernel/sched/core.c:4154 schedule_timeout+0x5c4/0xad0 kernel/time/timer.c:1871 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x28b/0x460 kernel/sched/completion.c:136 __flush_work+0x3ee/0x8b0 kernel/workqueue.c:3043 __cancel_work_timer+0x308/0x440 kernel/workqueue.c:3130 cancel_delayed_work_sync+0xe/0x10 kernel/workqueue.c:3262 tls_sw_cancel_work_tx+0x63/0x70 net/tls/tls_sw.c:2096 tls_sk_proto_close+0x400/0x9a0 net/tls/tls_main.c:304 inet_release+0xc6/0x1c0 net/ipv4/af_inet.c:427 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:470 __sock_release+0xc7/0x280 net/socket.c:605 sock_close+0x13/0x20 net/socket.c:1283 __fput+0x25d/0x780 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0x10e/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1be/0x210 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x53d/0x630 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411211 Code: a5 fe ff ff 48 8d 3c 18 48 8d 7f f8 48 8b 07 48 85 c0 74 0d 90 48 8d 78 08 45 31 c0 e9 4b fe ff ff 48 89 d0 e9 56 ff ff ff 48 <89> 44 24 20 48 8b 4c 24 48 48 89 0c 24 48 89 54 24 08 48 89 44 24 RSP: 002b:00007ffd30a26970 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffd30a268a0 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000002 INFO: task syz-executor1:9258 blocked for more than 144 seconds. Not tainted 5.6.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D28088 9258 7608 0x00000004 Call Trace: context_switch kernel/sched/core.c:3380 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4080 schedule+0xc3/0x2b0 kernel/sched/core.c:4154 schedule_timeout+0x5c4/0xad0 kernel/time/timer.c:1871 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x28b/0x460 kernel/sched/completion.c:136 __flush_work+0x3ee/0x8b0 kernel/workqueue.c:3043 __cancel_work_timer+0x308/0x440 kernel/workqueue.c:3130 cancel_delayed_work_sync+0xe/0x10 kernel/workqueue.c:3262 tls_sw_cancel_work_tx+0x63/0x70 net/tls/tls_sw.c:2096 tls_sk_proto_close+0x400/0x9a0 net/tls/tls_main.c:304 inet_release+0xc6/0x1c0 net/ipv4/af_inet.c:427 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:470 __sock_release+0xc7/0x280 net/socket.c:605 sock_close+0x13/0x20 net/socket.c:1283 __fput+0x25d/0x780 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0x10e/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1be/0x210 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x53d/0x630 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411211 Code: a5 fe ff ff 48 8d 3c 18 48 8d 7f f8 48 8b 07 48 85 c0 74 0d 90 48 8d 78 08 45 31 c0 e9 4b fe ff ff 48 89 d0 e9 56 ff ff ff 48 <89> 44 24 20 48 8b 4c 24 48 48 89 0c 24 48 89 54 24 08 48 89 44 24 RSP: 002b:00007ffef2087810 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffef2087740 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000001 Showing all locks held in the system: 3 locks held by kworker/0:1/12: #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: process_one_work+0x79e/0x1690 kernel/workqueue.c:2237 #1: ffff8881da33fde8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}, at: process_one_work+0x7cf/0x1690 kernel/workqueue.c:2241 #2: ffff8881c160c8d0 (&ctx->tx_lock){+.+.}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 1 lock held by khungtaskd/1052: #0: ffffffff885a4a80 (rcu_read_lock){....}, at: debug_show_all_locks+0x5b/0x275 kernel/locking/lockdep.c:5333 3 locks held by kworker/0:2/2532: #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: process_one_work+0x79e/0x1690 kernel/workqueue.c:2237 #1: ffff8881cfd6fde8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}, at: process_one_work+0x7cf/0x1690 kernel/workqueue.c:2241 #2: ffff8881d2b748d0 (&ctx->tx_lock){+.+.}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 3 locks held by kworker/1:10/2619: #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: process_one_work+0x79e/0x1690 kernel/workqueue.c:2237 #1: ffff8881cf0c7de8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}, at: process_one_work+0x7cf/0x1690 kernel/workqueue.c:2241 #2: ffff8881b72de8d0 (&ctx->tx_lock){+.+.}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 3 locks held by kworker/0:3/2680: #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: process_one_work+0x79e/0x1690 kernel/workqueue.c:2237 #1: ffff8881ce95fde8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}, at: process_one_work+0x7cf/0x1690 kernel/workqueue.c:2241 #2: ffff8881b9bdccd0 (&ctx->tx_lock){+.+.}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 3 locks held by kworker/1:174/3141: #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: process_one_work+0x79e/0x1690 kernel/workqueue.c:2237 #1: ffff8881ccc07de8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}, at: process_one_work+0x7cf/0x1690 kernel/workqueue.c:2241 #2: ffff8881b9bf80d0 (&ctx->tx_lock){+.+.}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 3 locks held by kworker/1:176/3143: #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da026d28 ((wq_completion)events){+.+.}, at: process_one_work+0x79e/0x1690 kernel/workqueue.c:2237 #1: ffff8881ccc1fde8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}, at: process_one_work+0x7cf/0x1690 kernel/workqueue.c:2241 #2: ffff8881bd0e50d0 (&ctx->tx_lock){+.+.}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 1 lock held by rsyslogd/7389: #0: ffff8881c29d11a0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xa3/0xc0 fs/file.c:821 2 locks held by getty/7479: #0: ffff8881d6e81090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cc42e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/7480: #0: ffff8881c7af5090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cc82e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/7481: #0: ffff8881cf9a9090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cbc2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/7482: #0: ffff8881b95fc090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004ca82e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/7483: #0: ffff8881ced1c090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cb42e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/7484: #0: ffff8881cb7f2090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004ccc2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/7485: #0: ffff8881c523d090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004c9c2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 1 lock held by syz-executor0/9230: #0: ffff8881b45aec40 (&sb->s_type->i_mutex_key#12){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff8881b45aec40 (&sb->s_type->i_mutex_key#12){+.+.}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor3/9233: #0: ffff8881b4083200 (&sb->s_type->i_mutex_key#12){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff8881b4083200 (&sb->s_type->i_mutex_key#12){+.+.}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor4/9238: #0: ffff8881b4525280 (&sb->s_type->i_mutex_key#12){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff8881b4525280 (&sb->s_type->i_mutex_key#12){+.+.}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor5/9239: #0: ffff8881c0933280 (&sb->s_type->i_mutex_key#12){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff8881c0933280 (&sb->s_type->i_mutex_key#12){+.+.}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor2/9254: #0: ffff8881c26e2700 (&sb->s_type->i_mutex_key#12){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff8881c26e2700 (&sb->s_type->i_mutex_key#12){+.+.}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor1/9258: #0: ffff8881c24c8c40 (&sb->s_type->i_mutex_key#12){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff8881c24c8c40 (&sb->s_type->i_mutex_key#12){+.+.}, at: __sock_release+0x7d/0x280 net/socket.c:604 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1052 Comm: khungtaskd Not tainted 5.6.0-rc5-syzkaller #0 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+0x12d/0x187 lib/dump_stack.c:118 nmi_cpu_backtrace.cold.7+0x4b/0x84 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x18b/0x1b7 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+0x611/0xc50 kernel/hung_task.c:289 kthread+0x334/0x3f0 kernel/kthread.c:255 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.6.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:_nohz_idle_balance+0x0/0x3f0 kernel/sched/fair.c:9961 Code: e8 55 eb 51 00 4c 8b 95 00 ff ff ff 49 b9 00 00 00 00 00 fc ff df e9 26 f6 ff ff 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 <48> b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 57 41 56 41 55 41 54 RSP: 0018:ffff8881db009e90 EFLAGS: 00000246 RAX: 0000000000000003 RBX: ffff8881db037300 RCX: ffffffff814d8266 RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8881db037300 RBP: ffff8881db009ed8 R08: ffffed103b606e6d R09: ffffed103b606e6d R10: ffffed103b606e6c R11: ffff8881db037363 R12: ffff8881db037300 R13: ffff8881db037dc8 R14: 0000000000000001 R15: ffff8881db037360 FS: 0000000000000000(0000) GS:ffff8881db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000017d9000 CR3: 00000001bc5af000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_softirq+0x268/0x9b4 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19a/0x1d0 kernel/softirq.c:413 scheduler_ipi+0x38c/0x610 kernel/sched/core.c:2343 smp_reschedule_interrupt+0x81/0x4c0 arch/x86/kernel/smp.c:244 reschedule_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:853 RIP: 0010:native_safe_halt+0x12/0x20 arch/x86/include/asm/irqflags.h:61 Code: fe ff ff 48 89 df e8 8d 79 d3 fa eb 9c cc cc cc cc cc cc cc cc cc cc cc 55 48 89 e5 e9 07 00 00 00 0f 00 2d 80 b4 5b 00 fb f4 <5d> c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 e9 07 00 00 RSP: 0018:ffffffff88407ce0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff02 RAX: dffffc0000000000 RBX: ffffffff8847a3c0 RCX: 0000000000000000 RDX: 1ffffffff10a6c53 RSI: 0000000000000006 RDI: ffffffff88536298 RBP: ffffffff88407ce0 R08: 0000000000000006 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: fffffbfff10a6c51 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:144 [inline] default_idle+0x51/0x350 arch/x86/kernel/process.c:695 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:686 default_idle_call+0x87/0xa0 kernel/sched/idle.c:94 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x4b5/0x6d0 kernel/sched/idle.c:269 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:361 rest_init+0x19a/0x26f init/main.c:660 arch_call_rest_init+0x9/0xc start_kernel+0x719/0x754 init/main.c:998 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:490 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:471 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242