INFO: task syz-executor.1:24105 blocked for more than 143 seconds. Not tainted 5.3.0-rc7+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28104 24105 8973 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xd9/0x260 kernel/sched/core.c:3947 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 crypto_wait_req include/linux/crypto.h:685 [inline] crypto_wait_req include/linux/crypto.h:680 [inline] tls_sw_release_resources_tx+0x4ee/0x6b0 net/tls/tls_sw.c:2073 tls_sk_proto_cleanup net/tls/tls_main.c:288 [inline] tls_sk_proto_close+0x686/0x9c0 net/tls/tls_main.c:313 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: 0033:0x4135d1 Code: 49 89 c9 48 85 d2 0f 84 e3 02 00 00 44 0f b6 32 48 ff c2 b9 08 00 00 00 49 39 f5 0f 85 9c 02 00 00 48 8b 73 08 48 c1 ee 03 48 <85> f6 0f 84 fc 03 00 00 48 83 fe 02 0f 83 79 02 00 00 bb 02 00 00 RSP: 002b:00007ffe31a51f00 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00000000004135d1 RDX: 0000000000000000 RSI: 0000000000000cc4 RDI: 0000000000000004 RBP: 0000000000000001 R08: 00000000aa52ccc4 R09: 00000000aa52ccc8 R10: 00007ffe31a51fe0 R11: 0000000000000293 R12: 000000000075c9a0 R13: 000000000075c9a0 R14: 0000000000762050 R15: ffffffffffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1057: #0: 00000000ebc14ca4 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5256 2 locks held by rsyslogd/8843: #0: 00000000199ee546 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801 #1: 0000000027abf7ef (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1207 [inline] #1: 0000000027abf7ef (&rq->lock){-.-.}, at: __schedule+0x1f5/0x1580 kernel/sched/core.c:3832 2 locks held by getty/8933: #0: 0000000014797b89 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000f3e93826 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8934: #0: 00000000c3a1cfc7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000c2adcacb (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8935: #0: 000000004b27484c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 000000007e345003 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8936: #0: 0000000035bdd331 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 000000008b0455e9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8937: #0: 000000000cd4b272 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000a6183277 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8938: #0: 00000000bd3837dd (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000a9f5d628 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8939: #0: 0000000067d7f107 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 0000000084ea03b3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by syz-executor.1/24105: #0: 000000001eb5c06e (&sb->s_type->i_mutex_key#12){+.+.}, at: inode_lock include/linux/fs.h:778 [inline] #0: 000000001eb5c06e (&sb->s_type->i_mutex_key#12){+.+.}, at: __sock_release+0x89/0x280 net/socket.c:589 #1: 000000002e7ab73b (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1522 [inline] #1: 000000002e7ab73b (sk_lock-AF_INET6){+.+.}, at: tls_sk_proto_close+0x12b/0x9c0 net/tls/tls_main.c:309 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc7+ #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+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 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60