INFO: task syz-executor194:8927 blocked for more than 143 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor194 D27400 8927 8925 0x20020004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 __lock_sock+0x165/0x290 net/core/sock.c:2413 lock_sock_nested+0xfe/0x120 net/core/sock.c:2938 virtio_transport_release+0xc4/0xd50 net/vmw_vsock/virtio_transport_common.c:822 vsock_assign_transport+0xea/0x330 net/vmw_vsock/af_vsock.c:437 vsock_stream_connect+0x2b3/0xc70 net/vmw_vsock/af_vsock.c:1268 __sys_connect_file+0x25d/0x2e0 net/socket.c:1847 __sys_connect+0x51/0x90 net/socket.c:1860 __do_sys_connect net/socket.c:1871 [inline] __se_sys_connect net/socket.c:1868 [inline] __ia32_sys_connect+0x72/0xb0 net/socket.c:1868 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline] do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f6aa39 Code: Bad RIP value. RSP: 002b:00000000ffe66c3c EFLAGS: 00000216 ORIG_RAX: 000000000000016a RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 RDX: 0000000000000010 RSI: 000000000000016a RDI: 0000000000000003 RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor194:8932 blocked for more than 143 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor194 D28144 8932 8931 0x20020004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 __lock_sock+0x165/0x290 net/core/sock.c:2413 lock_sock_nested+0xfe/0x120 net/core/sock.c:2938 virtio_transport_release+0xc4/0xd50 net/vmw_vsock/virtio_transport_common.c:822 vsock_assign_transport+0xea/0x330 net/vmw_vsock/af_vsock.c:437 vsock_stream_connect+0x2b3/0xc70 net/vmw_vsock/af_vsock.c:1268 __sys_connect_file+0x25d/0x2e0 net/socket.c:1847 __sys_connect+0x51/0x90 net/socket.c:1860 __do_sys_connect net/socket.c:1871 [inline] __se_sys_connect net/socket.c:1868 [inline] __ia32_sys_connect+0x72/0xb0 net/socket.c:1868 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline] do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f6aa39 Code: Bad RIP value. RSP: 002b:00000000ffe66c3c EFLAGS: 00000212 ORIG_RAX: 000000000000016a RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 RDX: 0000000000000010 RSI: 000000000000016a RDI: 0000000000000003 RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor194:8933 blocked for more than 143 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor194 D28144 8933 8930 0x20020004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 __lock_sock+0x165/0x290 net/core/sock.c:2413 lock_sock_nested+0xfe/0x120 net/core/sock.c:2938 virtio_transport_release+0xc4/0xd50 net/vmw_vsock/virtio_transport_common.c:822 vsock_assign_transport+0xea/0x330 net/vmw_vsock/af_vsock.c:437 vsock_stream_connect+0x2b3/0xc70 net/vmw_vsock/af_vsock.c:1268 __sys_connect_file+0x25d/0x2e0 net/socket.c:1847 __sys_connect+0x51/0x90 net/socket.c:1860 __do_sys_connect net/socket.c:1871 [inline] __se_sys_connect net/socket.c:1868 [inline] __ia32_sys_connect+0x72/0xb0 net/socket.c:1868 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline] do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f6aa39 Code: Bad RIP value. RSP: 002b:00000000ffe66c3c EFLAGS: 00000212 ORIG_RAX: 000000000000016a RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 RDX: 0000000000000010 RSI: 000000000000016a RDI: 0000000000000003 RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor194:8934 blocked for more than 144 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor194 D28144 8934 8928 0x20020004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 __lock_sock+0x165/0x290 net/core/sock.c:2413 lock_sock_nested+0xfe/0x120 net/core/sock.c:2938 virtio_transport_release+0xc4/0xd50 net/vmw_vsock/virtio_transport_common.c:822 vsock_assign_transport+0xea/0x330 net/vmw_vsock/af_vsock.c:437 vsock_stream_connect+0x2b3/0xc70 net/vmw_vsock/af_vsock.c:1268 __sys_connect_file+0x25d/0x2e0 net/socket.c:1847 __sys_connect+0x51/0x90 net/socket.c:1860 __do_sys_connect net/socket.c:1871 [inline] __se_sys_connect net/socket.c:1868 [inline] __ia32_sys_connect+0x72/0xb0 net/socket.c:1868 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline] do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f6aa39 Code: Bad RIP value. RSP: 002b:00000000ffe66c3c EFLAGS: 00000212 ORIG_RAX: 000000000000016a RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 RDX: 0000000000000010 RSI: 000000000000016a RDI: 0000000000000003 RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor194:8935 blocked for more than 144 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor194 D28144 8935 8926 0x20020004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 __lock_sock+0x165/0x290 net/core/sock.c:2413 lock_sock_nested+0xfe/0x120 net/core/sock.c:2938 virtio_transport_release+0xc4/0xd50 net/vmw_vsock/virtio_transport_common.c:822 vsock_assign_transport+0xea/0x330 net/vmw_vsock/af_vsock.c:437 vsock_stream_connect+0x2b3/0xc70 net/vmw_vsock/af_vsock.c:1268 __sys_connect_file+0x25d/0x2e0 net/socket.c:1847 __sys_connect+0x51/0x90 net/socket.c:1860 __do_sys_connect net/socket.c:1871 [inline] __se_sys_connect net/socket.c:1868 [inline] __ia32_sys_connect+0x72/0xb0 net/socket.c:1868 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline] do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f6aa39 Code: Bad RIP value. RSP: 002b:00000000ffe66c3c EFLAGS: 00000216 ORIG_RAX: 000000000000016a RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 RDX: 0000000000000010 RSI: 000000000000016a RDI: 0000000000000003 RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor194:8936 blocked for more than 144 seconds. Not tainted 5.4.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor194 D28144 8936 8929 0x20020004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x8e1/0x1f30 kernel/sched/core.c:4081 schedule+0xdc/0x2b0 kernel/sched/core.c:4155 __lock_sock+0x165/0x290 net/core/sock.c:2413 lock_sock_nested+0xfe/0x120 net/core/sock.c:2938 virtio_transport_release+0xc4/0xd50 net/vmw_vsock/virtio_transport_common.c:822 vsock_assign_transport+0xea/0x330 net/vmw_vsock/af_vsock.c:437 vsock_stream_connect+0x2b3/0xc70 net/vmw_vsock/af_vsock.c:1268 __sys_connect_file+0x25d/0x2e0 net/socket.c:1847 __sys_connect+0x51/0x90 net/socket.c:1860 __do_sys_connect net/socket.c:1871 [inline] __se_sys_connect net/socket.c:1868 [inline] __ia32_sys_connect+0x72/0xb0 net/socket.c:1868 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline] do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f6aa39 Code: Bad RIP value. RSP: 002b:00000000ffe66c3c EFLAGS: 00000216 ORIG_RAX: 000000000000016a RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 RDX: 0000000000000010 RSI: 000000000000016a RDI: 0000000000000003 RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/1098: #0: ffffffff895a4080 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 kernel/locking/lockdep.c:5334 1 lock held by rsyslogd/8809: #0: ffff8880997581a0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801 2 locks held by getty/8899: #0: ffff888095437090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f512e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8900: #0: ffff8880a3df6090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f692e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8901: #0: ffff888096ee1090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f452e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8902: #0: ffff88809252e090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f5d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8903: #0: ffff88809bddf090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f6d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8904: #0: ffff88809e1d9090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f652e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8905: #0: ffff88808c3b7090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f3d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 1 lock held by syz-executor194/8927: #0: ffff88809ffe58d0 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1526 [inline] #0: ffff88809ffe58d0 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 net/vmw_vsock/af_vsock.c:1238 1 lock held by syz-executor194/8932: #0: ffff888091fec910 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1526 [inline] #0: ffff888091fec910 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 net/vmw_vsock/af_vsock.c:1238 1 lock held by syz-executor194/8933: #0: ffff888091fec190 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1526 [inline] #0: ffff888091fec190 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 net/vmw_vsock/af_vsock.c:1238 1 lock held by syz-executor194/8934: #0: ffff8880a09a6950 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1526 [inline] #0: ffff8880a09a6950 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 net/vmw_vsock/af_vsock.c:1238 1 lock held by syz-executor194/8935: #0: ffff8880a4a08890 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1526 [inline] #0: ffff8880a4a08890 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 net/vmw_vsock/af_vsock.c:1238 1 lock held by syz-executor194/8936: #0: ffff88809ffe5150 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1526 [inline] #0: ffff88809ffe5150 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 net/vmw_vsock/af_vsock.c:1238 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1098 Comm: khungtaskd Not tainted 5.4.0-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+0x197/0x210 lib/dump_stack.c:118 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+0xb11/0x10c0 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: 3052 Comm: kworker/1:2 Not tainted 5.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_power_efficient gc_worker RIP: 0010:debug_lockdep_rcu_enabled.part.0+0x2a/0x60 kernel/rcu/update.c:252 Code: 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 65 48 8b 1c 25 c0 1e 02 00 48 8d bb 94 08 00 00 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 10 8b 93 94 08 00 RSP: 0018:ffff88809fd3fbc8 EFLAGS: 00000807 RAX: dffffc0000000000 RBX: ffff88809fd34080 RCX: 1ffffffff146e1da RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88809fd34914 RBP: ffff88809fd3fbd0 R08: 1ffffffff146dba0 R09: fffffbfff146dba1 R10: fffffbfff146dba0 R11: ffffffff8a36dd07 R12: ffffffff895a4080 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001066000 CR3: 0000000097b17000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_lockdep_rcu_enabled+0x71/0xa0 kernel/rcu/update.c:251 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x330/0x410 kernel/locking/lockdep.c:4484 rcu_lock_acquire include/linux/rcupdate.h:208 [inline] rcu_read_lock include/linux/rcupdate.h:617 [inline] gc_worker+0x1a4/0xdd0 net/netfilter/nf_conntrack_core.c:1244 process_one_work+0x9af/0x1740 kernel/workqueue.c:2264 worker_thread+0x98/0xe40 kernel/workqueue.c:2410 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352