bisecting fixing commit since 90cadbbf341dd5b2df991c33a6bd6341f3a53788 building syzkaller on 8a41a0ad8ed91a6c7a65663b1bacaf6d79cde558 testing commit 90cadbbf341dd5b2df991c33a6bd6341f3a53788 with gcc (GCC) 8.1.0 kernel signature: 95be3b79416c22922746c40b18e8eb5ac9635c0db69fbb59979a9429cf72153a run #0: crashed: KASAN: use-after-free Read in generic_gcmaes_encrypt run #1: crashed: KASAN: use-after-free Read in generic_gcmaes_encrypt run #2: crashed: KASAN: use-after-free Read in generic_gcmaes_encrypt run #3: crashed: KASAN: use-after-free Read in generic_gcmaes_encrypt run #4: crashed: KASAN: use-after-free Read in generic_gcmaes_encrypt run #5: crashed: KASAN: use-after-free Read in generic_gcmaes_encrypt run #6: crashed: KASAN: use-after-free Read in generic_gcmaes_encrypt run #7: crashed: KASAN: use-after-free Read in generic_gcmaes_encrypt run #8: crashed: INFO: task hung in tls_sw_free_resources_tx run #9: crashed: INFO: task hung in tls_sw_free_resources_tx testing current HEAD 63bef48fd6c9d3f1ba4f0e23b4da1e007db6a3c0 testing commit 63bef48fd6c9d3f1ba4f0e23b4da1e007db6a3c0 with gcc (GCC) 8.1.0 kernel signature: 9e4247068b5b8b3378266e5d7a1df9874ade3de3c5dc5e6d965816b24880b4f2 all runs: crashed: INFO: task hung in tls_sw_cancel_work_tx revisions tested: 2, total time: 23m42.764864932s (build: 10m50.626448993s, test: 12m6.491304057s) the crash still happens on HEAD commit msg: Merge branch 'akpm' (patches from Andrew) crash: INFO: task hung in tls_sw_cancel_work_tx 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-executor1:9065 blocked for more than 143 seconds. Not tainted 5.6.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D28136 9065 6667 0x00000004 Call Trace: context_switch kernel/sched/core.c:3378 [inline] __schedule+0x85b/0x1960 kernel/sched/core.c:4094 schedule+0xc3/0x2b0 kernel/sched/core.c:4168 schedule_timeout+0x47a/0x710 kernel/time/timer.c:1874 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x171/0x280 kernel/sched/completion.c:138 __flush_work+0x3f7/0x8c0 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:305 inet_release+0xc6/0x1c0 net/ipv4/af_inet.c:427 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:471 __sock_release+0xc7/0x280 net/socket.c:605 sock_close+0x13/0x20 net/socket.c:1283 __fput+0x2aa/0x790 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0xd4/0x170 kernel/task_work.c:123 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1be/0x210 arch/x86/entry/common.c:165 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x53d/0x630 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x411211 Code: Bad RIP value. RSP: 002b:00007fff4797a820 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007fff4797a750 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 INFO: task syz-executor0:9071 blocked for more than 143 seconds. Not tainted 5.6.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D28136 9071 6677 0x00000004 Call Trace: context_switch kernel/sched/core.c:3378 [inline] __schedule+0x85b/0x1960 kernel/sched/core.c:4094 schedule+0xc3/0x2b0 kernel/sched/core.c:4168 schedule_timeout+0x47a/0x710 kernel/time/timer.c:1874 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x171/0x280 kernel/sched/completion.c:138 __flush_work+0x3f7/0x8c0 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:305 inet_release+0xc6/0x1c0 net/ipv4/af_inet.c:427 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:471 __sock_release+0xc7/0x280 net/socket.c:605 sock_close+0x13/0x20 net/socket.c:1283 __fput+0x2aa/0x790 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0xd4/0x170 kernel/task_work.c:123 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1be/0x210 arch/x86/entry/common.c:165 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x53d/0x630 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x411211 Code: Bad RIP value. RSP: 002b:00007ffd9d7fadf0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffd9d7fad20 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor5:9072 blocked for more than 143 seconds. Not tainted 5.6.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D28136 9072 6689 0x00000004 Call Trace: context_switch kernel/sched/core.c:3378 [inline] __schedule+0x85b/0x1960 kernel/sched/core.c:4094 schedule+0xc3/0x2b0 kernel/sched/core.c:4168 schedule_timeout+0x47a/0x710 kernel/time/timer.c:1874 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x171/0x280 kernel/sched/completion.c:138 __flush_work+0x3f7/0x8c0 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:305 inet_release+0xc6/0x1c0 net/ipv4/af_inet.c:427 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:471 __sock_release+0xc7/0x280 net/socket.c:605 sock_close+0x13/0x20 net/socket.c:1283 __fput+0x2aa/0x790 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0xd4/0x170 kernel/task_work.c:123 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1be/0x210 arch/x86/entry/common.c:165 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x53d/0x630 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x411211 Code: Bad RIP value. RSP: 002b:00007ffc27ee3560 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffc27ee3490 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000005 INFO: task syz-executor3:9089 blocked for more than 144 seconds. Not tainted 5.6.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D27528 9089 6664 0x00000004 Call Trace: context_switch kernel/sched/core.c:3378 [inline] __schedule+0x85b/0x1960 kernel/sched/core.c:4094 schedule+0xc3/0x2b0 kernel/sched/core.c:4168 schedule_timeout+0x47a/0x710 kernel/time/timer.c:1874 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x171/0x280 kernel/sched/completion.c:138 __flush_work+0x3f7/0x8c0 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:305 inet_release+0xc6/0x1c0 net/ipv4/af_inet.c:427 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:471 __sock_release+0xc7/0x280 net/socket.c:605 sock_close+0x13/0x20 net/socket.c:1283 __fput+0x2aa/0x790 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0xd4/0x170 kernel/task_work.c:123 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1be/0x210 arch/x86/entry/common.c:165 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x53d/0x630 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x411211 Code: Bad RIP value. RSP: 002b:00007ffe6a83fad0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffe6a83fa00 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000003 INFO: task syz-executor4:9092 blocked for more than 144 seconds. Not tainted 5.6.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D27168 9092 6684 0x00000004 Call Trace: context_switch kernel/sched/core.c:3378 [inline] __schedule+0x85b/0x1960 kernel/sched/core.c:4094 schedule+0xc3/0x2b0 kernel/sched/core.c:4168 schedule_timeout+0x47a/0x710 kernel/time/timer.c:1874 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x171/0x280 kernel/sched/completion.c:138 __flush_work+0x3f7/0x8c0 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:305 inet_release+0xc6/0x1c0 net/ipv4/af_inet.c:427 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:471 __sock_release+0xc7/0x280 net/socket.c:605 sock_close+0x13/0x20 net/socket.c:1283 __fput+0x2aa/0x790 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0xd4/0x170 kernel/task_work.c:123 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1be/0x210 arch/x86/entry/common.c:165 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x53d/0x630 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x411211 Code: Bad RIP value. RSP: 002b:00007ffd2486da90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffd2486d9c0 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000004 INFO: task syz-executor2:9105 blocked for more than 144 seconds. Not tainted 5.6.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D27512 9105 6668 0x00000004 Call Trace: context_switch kernel/sched/core.c:3378 [inline] __schedule+0x85b/0x1960 kernel/sched/core.c:4094 schedule+0xc3/0x2b0 kernel/sched/core.c:4168 schedule_timeout+0x47a/0x710 kernel/time/timer.c:1874 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x171/0x280 kernel/sched/completion.c:138 __flush_work+0x3f7/0x8c0 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:305 inet_release+0xc6/0x1c0 net/ipv4/af_inet.c:427 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:471 __sock_release+0xc7/0x280 net/socket.c:605 sock_close+0x13/0x20 net/socket.c:1283 __fput+0x2aa/0x790 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0xd4/0x170 kernel/task_work.c:123 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1be/0x210 arch/x86/entry/common.c:165 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x53d/0x630 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x411211 Code: Bad RIP value. RSP: 002b:00007ffff64417b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffff64416e0 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000002 Showing all locks held in the system: 3 locks held by kworker/0:0/5: #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a6/0x1690 kernel/workqueue.c:2237 #1: ffff8881da2efde8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d7/0x1690 kernel/workqueue.c:2241 #2: ffff8881ce1a68d8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 1 lock held by khungtaskd/1051: #0: ffffffff885b3800 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x5b/0x275 kernel/locking/lockdep.c:5745 3 locks held by kworker/0:2/2534: #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a6/0x1690 kernel/workqueue.c:2237 #1: ffff8881cf8d7de8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d7/0x1690 kernel/workqueue.c:2241 #2: ffff8881d4c3fcd8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 3 locks held by kworker/0:3/2540: #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a6/0x1690 kernel/workqueue.c:2237 #1: ffff8881cf96fde8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d7/0x1690 kernel/workqueue.c:2241 #2: ffff8881bbaea4d8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 3 locks held by kworker/0:5/2555: #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a6/0x1690 kernel/workqueue.c:2237 #1: ffff8881cfa3fde8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d7/0x1690 kernel/workqueue.c:2241 #2: ffff8881d1ff4cd8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 3 locks held by kworker/0:6/2559: #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a6/0x1690 kernel/workqueue.c:2237 #1: ffff8881cfad7de8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d7/0x1690 kernel/workqueue.c:2241 #2: ffff8881c66988d8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 3 locks held by kworker/1:11/2790: #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da026d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a6/0x1690 kernel/workqueue.c:2237 #1: ffff8881cdc3fde8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d7/0x1690 kernel/workqueue.c:2241 #2: ffff8881c85020d8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 1 lock held by syz-executor1/9065: #0: ffff8881aeffd750 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:797 [inline] #0: ffff8881aeffd750 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor0/9071: #0: ffff8881a20b7c90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:797 [inline] #0: ffff8881a20b7c90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor5/9072: #0: ffff8881a2415c90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:797 [inline] #0: ffff8881a2415c90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor3/9089: #0: ffff8881a208cc90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:797 [inline] #0: ffff8881a208cc90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor4/9092: #0: ffff8881a2419210 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:797 [inline] #0: ffff8881a2419210 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor2/9105: #0: ffff8881aefe5c90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:797 [inline] #0: ffff8881aefe5c90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x7d/0x280 net/socket.c:604 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1051 Comm: khungtaskd Not tainted 5.6.0-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+0x357/0x420 kernel/kthread.c:268 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x12/0x20 arch/x86/include/asm/irqflags.h:60