INFO: task syz-executor.0:15259 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.0 D25912 15259 8994 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:00007f4904f30c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f4904f316d4 RCX: 000000000045c479
RDX: 0000000000000010 RSI: 0000000020000140 RDI: 0000000000000006
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000096 R14: 00000000004c2ece R15: 000000000076bf2c
Showing all locks held in the system:
3 locks held by kworker/u4:5/346:
#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
1 lock held by khungtaskd/1078:
#0: ffffffff892d9948 (rcu_read_lock){....}, at: rcu_lock_acquire+0x4/0x30 include/linux/rcupdate.h:207
1 lock held by rsyslogd/8863:
2 locks held by getty/8953:
#0: ffff8880a6dfd090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267
#1: ffffc900017772e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156
2 locks held by getty/8954:
#0: ffff88809bfeb090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267
#1: ffffc900017bb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156
2 locks held by getty/8955:
#0: ffff88809f8e6090 (&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
2 locks held by getty/8956:
#0: ffff8880a81c6090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267
#1: ffffc900017fb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156
2 locks held by getty/8957:
#0: ffff8880a4e6a090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267
#1: ffffc900017732e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156
2 locks held by getty/8958:
#0: ffff88809e91c090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267
#1: ffffc900017db2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156
2 locks held by getty/8959:
#0: ffff8880928f1090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267
#1: ffffc9000174b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156
1 lock held by syz-executor.0/15259:
#0: ffff8880a9b3a8d0 (sk_lock-AF_VSOCK){+.+.}, at: lock_sock include/net/sock.h:1541 [inline]
#0: ffff8880a9b3a8d0 (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: 1078 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: 346 Comm: kworker/u4:5 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_iv_send_outstanding_bat_ogm_packet
RIP: 0010:check_memory_region+0x0/0x2f0 mm/kasan/generic.c:191
Code: c7 03 17 e7 88 eb 0c 31 db 48 c7 c7 3b 17 e7 88 4c 89 fe 31 c0 e8 93 b4 ab ff eb cf cc cc cc cc cc cc cc cc cc cc cc cc cc cc <55> 48 89 e5 41 57 41 56 41 55 41 54 53 b0 01 48 85 f6 0f 84 09 02
RSP: 0018:ffffc90002117958 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 000000000000002b RCX: ffffffff815be511
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8a0328a0
RBP: ffffc90002117960 R08: dffffc0000000000 R09: fffffbfff1406515
R10: fffffbfff1406515 R11: 0000000000000000 R12: ffff8880a8bfec74
R13: ffff8880a8bfebd0 R14: ffff8880a8bfec50 R15: ffff8880a8bfe340
FS: 0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 0000000092ad0000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline]
__lock_acquire+0x6f1/0x1bc0 kernel/locking/lockdep.c:3924
lock_acquire+0x154/0x250 kernel/locking/lockdep.c:4484
rcu_lock_acquire+0x2e/0x40 include/linux/rcupdate.h:208
rcu_read_lock include/linux/rcupdate.h:601 [inline]
batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:754 [inline]
batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:821 [inline]
batadv_iv_ogm_schedule+0x37a/0xf00 net/batman-adv/bat_iv_ogm.c:865
batadv_iv_send_outstanding_bat_ogm_packet+0x664/0x770 net/batman-adv/bat_iv_ogm.c:1718
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