u.:d]:.,['
libceph: resolve '
u.' (ret=-3): failed
libceph: parse_ips bad ip '
u.:d]:.,['
INFO: task syz-executor4:6087 blocked for more than 140 seconds.
      Not tainted 4.20.0+ #170
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor4   D24128  6087   1232 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2831 [inline]
 __schedule+0x86c/0x1ed0 kernel/sched/core.c:3472
 schedule+0xfe/0x460 kernel/sched/core.c:3516
 exp_funnel_lock kernel/rcu/tree_exp.h:319 [inline]
 _synchronize_rcu_expedited.constprop.58+0x882/0x980 kernel/rcu/tree_exp.h:620
 synchronize_rcu_expedited+0x27/0xa0 kernel/rcu/tree_exp.h:758
 synchronize_net+0x3b/0x60 net/core/dev.c:9074
 packet_set_ring+0x286/0x1da0 net/packet/af_packet.c:4343
 packet_setsockopt+0x16ef/0x23b0 net/packet/af_packet.c:3653
 __sys_setsockopt+0x1ba/0x3c0 net/socket.c:1902
 __do_sys_setsockopt net/socket.c:1913 [inline]
 __se_sys_setsockopt net/socket.c:1910 [inline]
 __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1910
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4579b9
Code: fd ff 48 8b 44 24 20 48 c7 80 b0 00 00 00 17 00 00 00 8b 0d 09 66 19 01 48 8d 90 a8 00 00 00 85 c9 75 1d 48 8d 0d 2a d3 46 00 <48> 89 88 a8 00 00 00 48 8b 4c 24 18 48 8b 54 24 28 e9 60 ff ff ff
RSP: 002b:00007faf5e909c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004579b9
RDX: 0000000000000005 RSI: 0000000000000107 RDI: 000000000000000a
RBP: 000000000073c0e0 R08: 000000000000001c R09: 0000000000000000
R10: 0000000020000040 R11: 0000000000000246 R12: 00007faf5e90a6d4
R13: 00000000004c5835 R14: 00000000004da0b0 R15: 00000000ffffffff

Showing all locks held in the system:
1 lock held by khungtaskd/1027:
 #0: 00000000556e41f7 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4379
2 locks held by rsyslogd/8264:
 #0: 000000005209ad89 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766
 #1: 0000000089f1ea86 (fs_reclaim){+.+.}, at: syslog_print kernel/printk/printk.c:1309 [inline]
 #1: 0000000089f1ea86 (fs_reclaim){+.+.}, at: do_syslog+0xc45/0x1690 kernel/printk/printk.c:1469
2 locks held by getty/8386:
 #0: 0000000093f78d9d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 0000000026d9696f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/8387:
 #0: 0000000096d61bb8 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 0000000060649ad3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/8388:
 #0: 00000000627ed168 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 000000006f85a4e8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/8389:
 #0: 00000000849e23d9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 000000006b0130a3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/8390:
 #0: 00000000ff5cd459 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 000000005e67d173 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/8391:
 #0: 00000000fac80336 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 0000000011a1b367 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/8392:
 #0: 00000000b59673c5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 0000000049c3a3ab (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
1 lock held by syz-executor4/6087:
 #0: 000000007173bca6 (sk_lock-AF_PACKET){+.+.}, at: lock_sock include/net/sock.h:1492 [inline]
 #0: 000000007173bca6 (sk_lock-AF_PACKET){+.+.}, at: packet_setsockopt+0x602/0x23b0 net/packet/af_packet.c:3636

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 1027 Comm: khungtaskd Not tainted 4.20.0+ #170
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+0x1d3/0x2c6 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.4+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1c2/0x22c 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+0xb51/0x1060 kernel/hung_task.c:289
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11594 Comm: kworker/u4:6 Not tainted 4.20.0+ #170
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:756 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:778 [inline]
RIP: 0010:lock_acquire+0x101/0x520 kernel/locking/lockdep.c:3839
Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ae 03 00 00 48 83 3d 4f 88 10 08 00 0f 84 1f 03 00 00 9c 58 <0f> 1f 44 00 00 48 c7 c7 b8 0a 72 89 48 89 85 20 ff ff ff 48 b8 00
RSP: 0018:ffff88805edef4b0 EFLAGS: 00000282
RAX: 0000000000000282 RBX: 1ffff1100bdbde9b RCX: 0000000000000000
RDX: 1ffffffff12e4155 RSI: 0000000000000000 RDI: ffffffff89720aa8
RBP: ffff88805edef5a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: ffff8880ae72dc7b R12: 0000000000000000
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 000000008bfb3000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 rcu_lock_acquire include/linux/rcupdate.h:223 [inline]
 rcu_read_lock include/linux/rcupdate.h:607 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:419 [inline]
 batadv_nc_worker+0x1ab/0x920 net/batman-adv/network-coding.c:730
 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153
 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352