INFO: task syz-executor954:8985 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-executor954 D27416 8985 8983 0x00000004 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] __x64_sys_connect+0x73/0xb0 net/socket.c:1868 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4412c9 Code: Bad RIP value. RSP: 002b:00007ffd05daaa48 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 RDX: 0000000000000010 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor954:8990 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-executor954 D28160 8990 8989 0x00000004 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] __x64_sys_connect+0x73/0xb0 net/socket.c:1868 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4412c9 Code: Bad RIP value. RSP: 002b:00007ffd05daaa48 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 RDX: 0000000000000010 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor954:8991 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-executor954 D28160 8991 8988 0x00000004 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] __x64_sys_connect+0x73/0xb0 net/socket.c:1868 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4412c9 Code: Bad RIP value. RSP: 002b:00007ffd05daaa48 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 RDX: 0000000000000010 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor954:8992 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-executor954 D28160 8992 8986 0x00000004 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] __x64_sys_connect+0x73/0xb0 net/socket.c:1868 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4412c9 Code: Bad RIP value. RSP: 002b:00007ffd05daaa48 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 RDX: 0000000000000010 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor954:8993 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-executor954 D28160 8993 8984 0x00000004 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] __x64_sys_connect+0x73/0xb0 net/socket.c:1868 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4412c9 Code: Bad RIP value. RSP: 002b:00007ffd05daaa48 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 RDX: 0000000000000010 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor954:8994 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-executor954 D28160 8994 8987 0x00000004 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] __x64_sys_connect+0x73/0xb0 net/socket.c:1868 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4412c9 Code: Bad RIP value. RSP: 002b:00007ffd05daaa48 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 RDX: 0000000000000010 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/992: #0: ffffffff895a4080 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 kernel/locking/lockdep.c:5334 2 locks held by getty/8958: #0: ffff88809641c090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f552e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8959: #0: ffff888096a83090 (&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/8960: #0: ffff888095eda090 (&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/8961: #0: ffff8880a0f80090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f592e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8962: #0: ffff888097f99090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f632e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8963: #0: ffff88809641d090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f672e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8964: #0: ffff888093a7a090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f352e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 1 lock held by syz-executor954/8985: #0: ffff8880962a98d0 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1526 [inline] #0: ffff8880962a98d0 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 net/vmw_vsock/af_vsock.c:1238 1 lock held by syz-executor954/8990: #0: ffff8880a7554910 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1526 [inline] #0: ffff8880a7554910 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 net/vmw_vsock/af_vsock.c:1238 1 lock held by syz-executor954/8991: #0: ffff8880a7554190 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1526 [inline] #0: ffff8880a7554190 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 net/vmw_vsock/af_vsock.c:1238 1 lock held by syz-executor954/8992: #0: ffff8880a077b950 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1526 [inline] #0: ffff8880a077b950 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 net/vmw_vsock/af_vsock.c:1238 1 lock held by syz-executor954/8993: #0: ffff8880a61d3890 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1526 [inline] #0: ffff8880a61d3890 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 net/vmw_vsock/af_vsock.c:1238 1 lock held by syz-executor954/8994: #0: ffff8880962a9150 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1526 [inline] #0: ffff8880962a9150 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 net/vmw_vsock/af_vsock.c:1238 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 992 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 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60