INFO: task syz-executor.5:1981 blocked for more than 143 seconds. Not tainted 5.3.0-rc3+ #122 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28384 1981 10321 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_timeout+0x717/0xc50 kernel/time/timer.c:1783 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+0x29c/0x440 kernel/sched/completion.c:136 __flush_work+0x508/0xa50 kernel/workqueue.c:3040 __cancel_work_timer+0x3d9/0x540 kernel/workqueue.c:3127 cancel_delayed_work_sync+0x1b/0x20 kernel/workqueue.c:3259 tls_sw_cancel_work_tx+0x68/0x80 net/tls/tls_sw.c:2063 tls_sk_proto_close+0x47b/0x910 net/tls/tls_main.c:299 inet_release+0xed/0x200 net/ipv4/af_inet.c:427 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:470 __sock_release+0xce/0x280 net/socket.c:590 sock_close+0x1e/0x30 net/socket.c:1268 __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x316/0x380 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5a9/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413511 Code: eb 27 4d 8d 6b 08 44 0f b6 36 49 89 cf 4c 89 d9 49 d3 e6 48 83 f9 40 4c 89 f9 4d 19 ff 4d 21 f7 4d 09 fc 48 ff c6 4d 89 eb 4d <39> cb 72 d4 4c 89 c6 49 c1 e8 03 4f 8d 0c 00 49 83 f9 39 0f 87 74 RSP: 002b:00007ffeaade2320 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000413511 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 00000000f810385f R09: 00000000f8103863 R10: 00007ffeaade2400 R11: 0000000000000293 R12: 000000000075c9a0 R13: 000000000075c9a0 R14: 0000000000760958 R15: ffffffffffffffff INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 PID: 1050 Comm: khungtaskd Not tainted 5.3.0-rc3+ #122 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0x9d0/0xef0 kernel/hung_task.c:289 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0-rc3+ #122 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:95 Code: 89 25 a4 28 19 09 41 bc f4 ff ff ff e8 ed 9f e9 ff 48 c7 05 8e 28 19 09 00 00 00 00 e9 77 e9 ff ff 90 90 90 90 90 90 90 90 90 <55> 48 89 e5 65 48 8b 04 25 40 fe 01 00 65 8b 15 74 74 8f 7e 81 e2 RSP: 0018:ffff8880ae909ed8 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 0000000001205c7a RCX: ffffffff81637aa1 RDX: 000000000004a37a RSI: 000000000004a37a RDI: 0000000000000004 RBP: ffff8880ae909f28 R08: ffff8880a98c6340 R09: fffffbfff134af30 R10: fffffbfff134af2f R11: ffffffff89a5797f R12: fffffbfff11a5e61 R13: dffffc0000000000 R14: 1ffffffff11a5e63 R15: 000000000004a37a FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 000000009ceb7000 CR4: 00000000001406e0 Call Trace: tick_nohz_irq_enter kernel/time/tick-sched.c:1250 [inline] tick_irq_enter+0xb5/0x3f0 kernel/time/tick-sched.c:1271 irq_enter+0xbd/0xe0 kernel/softirq.c:354 scheduler_ipi+0x28e/0x640 kernel/sched/core.c:2218 smp_reschedule_interrupt+0x78/0x4c0 arch/x86/kernel/smp.c:276 reschedule_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:854 RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61 Code: 28 5f 6e fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 04 e6 49 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d f4 e5 49 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 fe 14 22 fa e8 39 RSP: 0018:ffff8880a98dfd68 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff02 RAX: 1ffffffff11a5e65 RBX: ffff8880a98c6340 RCX: 1ffffffff134b56e RDX: dffffc0000000000 RSI: ffffffff817805de RDI: ffffffff873e382c RBP: ffff8880a98dfd98 R08: ffff8880a98c6340 R09: ffffed1015318c69 R10: ffffed1015318c68 R11: ffff8880a98c6347 R12: dffffc0000000000 R13: ffffffff89a57978 R14: 0000000000000000 R15: 0000000000000001 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:571 default_idle_call+0x84/0xb0 kernel/sched/idle.c:94 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x413/0x760 kernel/sched/idle.c:263 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:354 start_secondary+0x315/0x430 arch/x86/kernel/smpboot.c:264 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241