INFO: task syz-executor.4:14378 blocked for more than 143 seconds. Not tainted 5.6.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D29248 14378 14218 0x00004004 Call Trace: context_switch kernel/sched/core.c:3380 [inline] __schedule+0x87f/0xcd0 kernel/sched/core.c:4080 schedule+0x188/0x210 kernel/sched/core.c:4154 __lock_sock+0x15f/0x2a0 net/core/sock.c:2413 lock_sock_nested+0x7c/0x120 net/core/sock.c:2938 virtio_transport_release+0x5e/0xd20 net/vmw_vsock/virtio_transport_common.c:832 vsock_assign_transport+0x1e5/0x3b0 net/vmw_vsock/af_vsock.c:454 vsock_stream_connect+0x46d/0xb50 net/vmw_vsock/af_vsock.c:1288 __sys_connect_file net/socket.c:1857 [inline] __sys_connect+0x314/0x3a0 net/socket.c:1874 __do_sys_connect net/socket.c:1885 [inline] __se_sys_connect net/socket.c:1882 [inline] __x64_sys_connect+0x7a/0x90 net/socket.c:1882 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c479 Code: Bad RIP value. RSP: 002b:00007f040c951c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007f040c9526d4 RCX: 000000000045c479 RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000096 R14: 00000000004c2ece R15: 000000000076bf2c INFO: task syz-executor.4:14412 blocked for more than 143 seconds. Not tainted 5.6.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D29496 14412 14218 0x00004004 Call Trace: context_switch kernel/sched/core.c:3380 [inline] __schedule+0x87f/0xcd0 kernel/sched/core.c:4080 schedule+0x188/0x210 kernel/sched/core.c:4154 __lock_sock+0x15f/0x2a0 net/core/sock.c:2413 lock_sock_nested+0x7c/0x120 net/core/sock.c:2938 virtio_transport_release+0x5e/0xd20 net/vmw_vsock/virtio_transport_common.c:832 vsock_assign_transport+0x1e5/0x3b0 net/vmw_vsock/af_vsock.c:454 vsock_stream_connect+0x46d/0xb50 net/vmw_vsock/af_vsock.c:1288 __sys_connect_file net/socket.c:1857 [inline] __sys_connect+0x314/0x3a0 net/socket.c:1874 __do_sys_connect net/socket.c:1885 [inline] __se_sys_connect net/socket.c:1882 [inline] __x64_sys_connect+0x7a/0x90 net/socket.c:1882 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c479 Code: 15 08 c5 01 48 89 04 24 48 8d 44 24 28 48 89 44 24 08 e8 ea 87 fa ff 48 8d 7c 24 78 0f 57 c0 48 8d 7f d0 48 89 6c 24 f0 48 8d <6c> 24 f0 e8 d4 33 00 00 48 8b 6d 00 48 c7 44 24 38 00 00 00 00 66 RSP: 002b:00007f040c90fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007f040c9106d4 RCX: 000000000045c479 RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 000000000076c060 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000096 R14: 00000000004c2ece R15: 000000000076c06c Showing all locks held in the system: 5 locks held by kworker/u4:0/7: #0: ffff8880aea37198 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1215 [inline] #0: ffff8880aea37198 (&rq->lock){-.-.}, at: __schedule+0xdb/0xcd0 kernel/sched/core.c:4028 #1: ffffffff892d9948 (rcu_read_lock){....}, at: rcu_lock_acquire+0x4/0x30 include/linux/rcupdate.h:207 #2: ffff8880aea27258 (&base->lock){-.-.}, at: lock_timer_base kernel/time/timer.c:936 [inline] #2: ffff8880aea27258 (&base->lock){-.-.}, at: __mod_timer+0x1a1/0x1570 kernel/time/timer.c:1008 #3: ffffffff8a68b720 (&obj_hash[i].lock){-.-.}, at: debug_object_activate+0x63/0x6f0 lib/debugobjects.c:636 #4: ffff8880aea27258 (&base->lock){-.-.}, at: lock_timer_base kernel/time/timer.c:936 [inline] #4: ffff8880aea27258 (&base->lock){-.-.}, at: __mod_timer+0x1a1/0x1570 kernel/time/timer.c:1008 1 lock held by khungtaskd/1135: #0: ffffffff892d9948 (rcu_read_lock){....}, at: rcu_lock_acquire+0x4/0x30 include/linux/rcupdate.h:207 3 locks held by rsyslogd/8670: #0: ffff8880a4091de0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x279/0x310 fs/file.c:821 #1: ffffffff892d9948 (rcu_read_lock){....}, at: rcu_lock_acquire+0x9/0x40 include/linux/rcupdate.h:207 #2: ffffffff892d9948 (rcu_read_lock){....}, at: rcu_lock_acquire+0x4/0x30 include/linux/rcupdate.h:207 2 locks held by getty/8760: #0: ffff888097e24090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc9000187b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by getty/8761: #0: ffff88809bd16090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc900018ab2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by getty/8762: #0: ffff88809e694090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc9000186b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by getty/8763: #0: ffff888097e20090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc9000188b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by getty/8764: #0: ffff88809517d090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc9000189b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by getty/8765: #0: ffff888095628090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc9000185b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by getty/8766: #0: ffff8880939d4090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc900017eb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.4/14378: #0: ffff888096786950 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1541 [inline] #0: ffff888096786950 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0x110/0xb50 net/vmw_vsock/af_vsock.c:1258 1 lock held by syz-executor.4/14412: #0: ffff88809663b8d0 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1541 [inline] #0: ffff88809663b8d0 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0x110/0xb50 net/vmw_vsock/af_vsock.c:1258 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1135 Comm: khungtaskd Not tainted 5.6.0-rc3-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+0x1fb/0x318 lib/dump_stack.c:118 nmi_cpu_backtrace+0xaa/0x190 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x16f/0x290 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace+0x17/0x20 include/linux/nmi.h:146 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0xd40/0xd60 kernel/hung_task.c:289 kthread+0x332/0x350 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 CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:405 [inline] RIP: 0010:batadv_nc_worker+0xb3/0x5f0 net/batman-adv/network-coding.c:718 Code: 35 02 00 00 45 31 ff 48 8b 5d c0 48 89 d8 48 c1 e8 03 48 89 45 b0 90 48 8b 45 b0 42 80 3c 20 00 74 08 48 89 df e8 1d b8 ba f9 <4c> 8b 33 e8 45 0a 6b f9 48 c7 c7 48 99 2d 89 e8 19 86 00 00 e8 a4 RSP: 0018:ffffc90000cdfc78 EFLAGS: 00000246 RAX: 1ffff11014d7c490 RBX: ffff8880a6be2480 RCX: ffff8880a99a21c0 RDX: 0000000000000000 RSI: ffff8880a99a2ac8 RDI: 0000000000000286 RBP: ffffc90000cdfcd8 R08: dffffc0000000000 R09: fffffbfff12d372d R10: fffffbfff12d372d R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88803bc58b80 R14: ffff88803bc5c000 R15: 000000000000027e FS: 0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000018b0000 CR3: 000000008fd3e000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x7f5/0x10f0 kernel/workqueue.c:2264 worker_thread+0xbbc/0x1630 kernel/workqueue.c:2410 kthread+0x332/0x350 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352