IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
INFO: task login:6903 blocked for more than 140 seconds.
      Not tainted 4.6.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
login           D ffff8800b45ef968 25776  6903      1 0x00000002
 ffff8800b45ef968 ffffed0000000001 ffff88012c120d90 ffff88012c120d68
 ffff88012c120418 ffff8801298ca048 ffff880100000000 ffff8800b104c7c0
 ffff8801298ca040 ffff8800b45e8000 ffffed00168bd001 ffff8800b45e8008
Call Trace:
 [<ffffffff85b612ca>] schedule+0x9a/0x1c0 kernel/sched/core.c:3250
 [<ffffffff85b6dd67>] schedule_timeout+0x457/0x670 kernel/time/timer.c:1508
 [<ffffffff82f9ccbe>] down_write_failed drivers/tty/tty_ldsem.c:299 [inline]
 [<ffffffff82f9ccbe>] __ldsem_down_write_nested+0x1be/0x370 drivers/tty/tty_ldsem.c:351
 [<ffffffff85b6ee5d>] ldsem_down_write+0x2d/0x32 drivers/tty/tty_ldsem.c:393
 [<ffffffff82f96d31>] __tty_ldisc_lock drivers/tty/tty_ldisc.c:321 [inline]
 [<ffffffff82f96d31>] tty_ldisc_lock+0x11/0x30 drivers/tty/tty_ldisc.c:340
 [<ffffffff82f98093>] tty_ldisc_hangup+0x173/0x540 drivers/tty/tty_ldisc.c:728
 [<ffffffff82f7e806>] __tty_hangup+0x596/0xab0 drivers/tty/tty_io.c:739
 [<ffffffff82f8103f>] tty_vhangup_session drivers/tty/tty_io.c:848 [inline]
 [<ffffffff82f8103f>] disassociate_ctty.part.23+0x8f/0x6c0 drivers/tty/tty_io.c:901
 [<ffffffff82f8171e>] disassociate_ctty+0x6e/0x90 drivers/tty/tty_io.c:895
 [<ffffffff8134ef33>] do_exit+0x18f3/0x2dc0 kernel/exit.c:746
 [<ffffffff81350534>] do_group_exit+0xf4/0x2f0 kernel/exit.c:878
 [<ffffffff81350748>] SYSC_exit_group kernel/exit.c:889 [inline]
 [<ffffffff81350748>] SyS_exit_group+0x18/0x20 kernel/exit.c:887
 [<ffffffff85b6fe80>] entry_SYSCALL_64_fastpath+0x23/0xc1
2 locks held by login/6903:
 #0:  (&tty->legacy_mutex){+.+.+.}, at: [<ffffffff82f9c8d5>] tty_lock+0x55/0xb0 drivers/tty/tty_mutex.c:18
 #1:  (&tty->ldisc_sem){++++++}, at: [<ffffffff85b6ee5d>] ldsem_down_write+0x2d/0x32 drivers/tty/tty_ldsem.c:393
Sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 6813 Comm: rsyslogd Not tainted 4.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800b44dc7c0 ti: ffff8800b4e28000 task.ti: ffff8800b4e28000
RIP: 0010:[<ffffffff814ed200>]  [<ffffffff814ed200>] is_module_text_address+0x0/0x50 kernel/module.c:4021
RSP: 0018:ffff8800b4e2f798  EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff86ff9900 RCX: ffffffff85c52ea0
RDX: 0000000000000000 RSI: ffff8800b4e2f858 RDI: ffffffff86ff9900
RBP: ffff8800b4e2f7a8 R08: ffff8800b4e2f8b0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800b4e2f888
R13: ffff8800b4e2f858 R14: ffffffff85c52ea0 R15: ffffffff86ff9900
FS:  00007fb8be059700(0000) GS:ffff88012c000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f24f853adb8 CR3: 00000000b78f4000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff8139f131 0000000000000000 ffff8800b4e2f808 ffffffff811e569b
 ffff8800b4e2fff8 ffff8800b4e28000 ffff8800b4e2f888 ffffffffffff8000
 ffff8800b4e2f8b0 ffff8800b44dc7c0 ffff8800b4e2f858 ffff8800b4e2f8b0
Call Trace:
 [<ffffffff811e569b>] print_context_stack+0x7b/0xc0 arch/x86/kernel/dumpstack.c:107
 [<ffffffff811e49bd>] dump_trace+0x11d/0x320 arch/x86/kernel/dumpstack_64.c:243
 [<ffffffff81205056>] save_stack_trace+0x26/0x50 arch/x86/kernel/stacktrace.c:67
 [<ffffffff8173f3e6>] save_stack+0x46/0xd0 mm/kasan/kasan.c:450
 [<ffffffff8173f7a9>] set_track mm/kasan/kasan.c:462 [inline]
 [<ffffffff8173f7a9>] kasan_kmalloc+0xc9/0xe0 mm/kasan/kasan.c:532
 [<ffffffff8173fbe2>] kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:482
 [<ffffffff8173cdbb>] slab_post_alloc_hook mm/slab.h:408 [inline]
 [<ffffffff8173cdbb>] slab_alloc mm/slab.c:3232 [inline]
 [<ffffffff8173cdbb>] kmem_cache_alloc_trace+0x12b/0x6b0 mm/slab.c:3445
 [<ffffffff8146427b>] kmalloc include/linux/slab.h:478 [inline]
 [<ffffffff8146427b>] syslog_print kernel/printk/printk.c:1150 [inline]
 [<ffffffff8146427b>] do_syslog+0x47b/0x980 kernel/printk/printk.c:1327
 [<ffffffff8191b435>] kmsg_read+0x65/0x80 fs/proc/kmsg.c:39
 [<ffffffff818f433c>] proc_reg_read+0xbc/0x180 fs/proc/inode.c:203
 [<ffffffff8179627b>] __vfs_read+0xdb/0x4e0 fs/read_write.c:472
 [<ffffffff817999d9>] vfs_read+0xd9/0x2c0 fs/read_write.c:494
 [<ffffffff8179d38b>] SYSC_read fs/read_write.c:609 [inline]
 [<ffffffff8179d38b>] SyS_read+0xcb/0x1a0 fs/read_write.c:602
 [<ffffffff85b6fe80>] entry_SYSCALL_64_fastpath+0x23/0xc1
Code: e8 d6 9d ec ff 65 8b 05 af 92 b2 7e 85 c0 74 05 89 d8 5b 5d c3 e8 63 6e b1 ff 89 d8 5b 5d c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 <55> 48 89 e5 53 48 89 fb bf 01 00 00 00 e8 6e 82 ec ff 48 89 df 
NMI backtrace for cpu 1
CPU: 1 PID: 948 Comm: khungtaskd Not tainted 4.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800bbb70700 ti: ffff88012b318000 task.ti: ffff88012b318000
RIP: 0010:[<ffffffff81260b36>]  [<ffffffff81260b36>] native_write_msr_safe+0x6/0x40 arch/x86/include/asm/msr.h:124
RSP: 0018:ffff88012b31fc48  EFLAGS: 00000086
RAX: 0000000000000400 RBX: 0000000100000400 RCX: 0000000000000830
RDX: 0000000000000001 RSI: 0000000000000400 RDI: 0000000000000830
RBP: ffff88012b31fc60 R08: 0000000000000400 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: fffffbfff0eca430
R13: ffffffff876551c0 R14: 0000000000080000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f988e56c008 CR3: 00000000b78f4000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff81254bc0 ffff88012b31fc60 0000000000000007 ffff88012b31fcc8
 ffffffff81254d7a ffff88012b31fd20 ffffffff00000010 0000000000000286
 000000022b31fcb8 0000000000000001 0000000000000001 ffffffff86ca7e80
Call Trace:
 [<ffffffff81254d7a>] __x2apic_send_IPI_mask+0x19a/0x2d0 arch/x86/kernel/apic/x2apic_phys.c:62
 [<ffffffff81254f0e>] x2apic_send_IPI_mask+0xe/0x10 arch/x86/kernel/apic/x2apic_cluster.c:87
 [<ffffffff8124a4db>] nmi_raise_cpu_backtrace+0x5b/0x70 arch/x86/kernel/apic/hw_nmi.c:33
 [<ffffffff82c58e36>] nmi_trigger_all_cpu_backtrace+0x4d6/0x640 lib/nmi_backtrace.c:85
 [<ffffffff8124a574>] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 [<ffffffff81551d81>] trigger_all_cpu_backtrace include/linux/nmi.h:41 [inline]
 [<ffffffff81551d81>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff81551d81>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff81551d81>] watchdog+0x661/0xa00 kernel/hung_task.c:239
 [<ffffffff813a3a09>] kthread+0x209/0x2d0 kernel/kthread.c:209
 [<ffffffff85b700d2>] ret_from_fork+0x22/0x50 arch/x86/entry/entry_64.S:392
Code: 5b 5d c3 48 c1 e2 20 48 89 d3 31 d2 48 09 c3 48 89 de e8 1e 62 ab 01 48 89 d8 5b 5d c3 0f 1f 84 00 00 00 00 00 89 f0 89 f9 0f 30 <31> c0 0f 1f 44 00 00 c3 41 89 f0 48 89 d6 55 89 c2 48 c1 e6 20