bisecting fixing commit since 5694cecdb092656a822287a6691aa7ce668c8160 building syzkaller on 8a41a0ad8ed91a6c7a65663b1bacaf6d79cde558 testing commit 5694cecdb092656a822287a6691aa7ce668c8160 with gcc (GCC) 8.1.0 kernel signature: ce7e6f0b31e0a837b3890a452ddf9fcce9242dd1fdc0ca5b4e400f63ef09af00 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 00086336a8d96a04aa960f912287692a258f6cf5 testing commit 00086336a8d96a04aa960f912287692a258f6cf5 with gcc (GCC) 8.1.0 kernel signature: 057da98336edd7496d890b0c5db545183e08734a2b2a5febef15b7a483d6dd84 all runs: crashed: INFO: task hung in tls_sw_cancel_work_tx revisions tested: 2, total time: 24m16.519913988s (build: 11m42.466524131s, test: 12m1.378894064s) the crash still happens on HEAD commit msg: Merge tag 'efi-urgent-2020-04-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 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-executor5:9017 blocked for more than 143 seconds. Not tainted 5.7.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D28136 9017 6648 0x00000004 Call Trace: context_switch kernel/sched/core.c:3372 [inline] __schedule+0x85b/0x1960 kernel/sched/core.c:4088 schedule+0xc3/0x2b0 kernel/sched/core.c:4163 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:3045 __cancel_work_timer+0x308/0x440 kernel/workqueue.c:3132 cancel_delayed_work_sync+0xe/0x10 kernel/workqueue.c:3264 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:00007ffdeedccf00 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffdeedcce30 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000005 INFO: task syz-executor3:9037 blocked for more than 143 seconds. Not tainted 5.7.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D28136 9037 6640 0x00000004 Call Trace: context_switch kernel/sched/core.c:3372 [inline] __schedule+0x85b/0x1960 kernel/sched/core.c:4088 schedule+0xc3/0x2b0 kernel/sched/core.c:4163 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:3045 __cancel_work_timer+0x308/0x440 kernel/workqueue.c:3132 cancel_delayed_work_sync+0xe/0x10 kernel/workqueue.c:3264 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:00007ffe0f5c2220 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffe0f5c2150 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000003 INFO: task syz-executor1:9070 blocked for more than 143 seconds. Not tainted 5.7.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D27696 9070 6635 0x00000004 Call Trace: context_switch kernel/sched/core.c:3372 [inline] __schedule+0x85b/0x1960 kernel/sched/core.c:4088 schedule+0xc3/0x2b0 kernel/sched/core.c:4163 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:3045 __cancel_work_timer+0x308/0x440 kernel/workqueue.c:3132 cancel_delayed_work_sync+0xe/0x10 kernel/workqueue.c:3264 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:00007ffd0d03c320 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffd0d03c250 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 INFO: task syz-executor4:9077 blocked for more than 144 seconds. Not tainted 5.7.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D28136 9077 6651 0x00000004 Call Trace: context_switch kernel/sched/core.c:3372 [inline] __schedule+0x85b/0x1960 kernel/sched/core.c:4088 schedule+0xc3/0x2b0 kernel/sched/core.c:4163 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:3045 __cancel_work_timer+0x308/0x440 kernel/workqueue.c:3132 cancel_delayed_work_sync+0xe/0x10 kernel/workqueue.c:3264 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:00007ffc2c548e70 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffc2c548da0 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000004 INFO: task syz-executor2:9087 blocked for more than 144 seconds. Not tainted 5.7.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D28136 9087 6639 0x00000004 Call Trace: context_switch kernel/sched/core.c:3372 [inline] __schedule+0x85b/0x1960 kernel/sched/core.c:4088 schedule+0xc3/0x2b0 kernel/sched/core.c:4163 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:3045 __cancel_work_timer+0x308/0x440 kernel/workqueue.c:3132 cancel_delayed_work_sync+0xe/0x10 kernel/workqueue.c:3264 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:00007ffdcaca59d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffdcaca5900 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000002 INFO: task syz-executor0:9091 blocked for more than 144 seconds. Not tainted 5.7.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D28136 9091 6647 0x00000004 Call Trace: context_switch kernel/sched/core.c:3372 [inline] __schedule+0x85b/0x1960 kernel/sched/core.c:4088 schedule+0xc3/0x2b0 kernel/sched/core.c:4163 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:3045 __cancel_work_timer+0x308/0x440 kernel/workqueue.c:3132 cancel_delayed_work_sync+0xe/0x10 kernel/workqueue.c:3264 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:00007ffe9a7a07d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411211 RDX: 0000000000000000 RSI: 0000000000740b80 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffe9a7a0700 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000 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:2239 #1: ffff8881da2e7de8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d7/0x1690 kernel/workqueue.c:2243 #2: ffff8881cd7f54d8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 3 locks held by kworker/0:1/12: #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:2239 #1: ffff8881da337de8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d7/0x1690 kernel/workqueue.c:2243 #2: ffff8881d7f6dcd8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 3 locks held by kworker/1:1/23: #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:2239 #1: ffff8881d986fde8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d7/0x1690 kernel/workqueue.c:2243 #2: ffff8881d80664d8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 1 lock held by khungtaskd/1059: #0: ffffffff885b68c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x5b/0x275 kernel/locking/lockdep.c:5756 3 locks held by kworker/0:2/2532: #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:2239 #1: ffff8881cf8f7de8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d7/0x1690 kernel/workqueue.c:2243 #2: ffff8881c7e194d8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 3 locks held by kworker/1:9/3775: #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:2239 #1: ffff8881c5adfde8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d7/0x1690 kernel/workqueue.c:2243 #2: ffff8881d3db00d8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 1 lock held by in:imklog/6101: 1 lock held by syz-executor5/9017: #0: ffff8881ae7abc90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:797 [inline] #0: ffff8881ae7abc90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor3/9037: #0: ffff8881a1c80210 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:797 [inline] #0: ffff8881a1c80210 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor1/9070: #0: ffff8881ae7d1c90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:797 [inline] #0: ffff8881ae7d1c90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor4/9077: #0: ffff8881a1c61c90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:797 [inline] #0: ffff8881a1c61c90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor2/9087: #0: ffff8881cd837750 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:797 [inline] #0: ffff8881cd837750 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x7d/0x280 net/socket.c:604 1 lock held by syz-executor0/9091: #0: ffff8881c1803c90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:797 [inline] #0: ffff8881c1803c90 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x7d/0x280 net/socket.c:604 3 locks held by kworker/0:5/9096: #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:2239 #1: ffff88819e287de8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d7/0x1690 kernel/workqueue.c:2243 #2: ffff8881d49e88d8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0xf5/0x150 net/tls/tls_sw.c:2209 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1059 Comm: khungtaskd Not tainted 5.7.0-rc1-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