IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
general protection fault: 0000 [#1] PREEMPT SMP 
Modules linked in:
CPU: 1 PID: 6723 Comm: syz-executor.2 Not tainted 4.1.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800ad060950 ti: ffff8800aaa40000 task.ti: ffff8800aaa40000
RIP: 0010:[<ffffffff811c403b>]  [<ffffffff811c403b>] atomic_inc arch/x86/include/asm/atomic.h:92 [inline]
RIP: 0010:[<ffffffff811c403b>]  [<ffffffff811c403b>] __lock_acquire+0x2db/0x1c70 kernel/locking/lockdep.c:3105
RSP: 0000:ffff8800aaa43b18  EFLAGS: 00010086
RAX: 0000000000000000 RBX: dead4ead00000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8800aaa43bd8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: ffff8800ab788028 R15: ffff8800ad060950
FS:  00000000026ea940(0063) GS:ffff88012c100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056458fa550b8 CR3: 00000000ad2c9000 CR4: 00000000001407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000001 ffff8800ad0611e0 ffff8800aaa43b38 ffffffff811e162d
 ffff8800aaa43c08 ffffffff00000000 0000000000000000 ffff880000000000
 ffff8800b649a8b8 ffffffff83d7e6c0 ffff8800ad0611e0 ffffffff00000000
Call Trace:
 [<ffffffff811c6496>] lock_acquire+0xe6/0x310 kernel/locking/lockdep.c:3623
 [<ffffffff8118af7a>] flush_work+0x3a/0x320 kernel/workqueue.c:2731
 [<ffffffff8118c9ca>] __cancel_work_timer+0xda/0x210 kernel/workqueue.c:2801
 [<ffffffff8118cb0b>] cancel_work_sync+0xb/0x10 kernel/workqueue.c:2836
 [<ffffffff81afbf6a>] release_tty+0x8a/0x120 drivers/tty/tty_io.c:1697
 [<ffffffff81afc3ea>] tty_release+0x3ea/0x570 drivers/tty/tty_io.c:1928
 [<ffffffff81300e2d>] __fput+0xed/0x250 fs/file_table.c:208
 [<ffffffff81300fd9>] ____fput+0x9/0x10 fs/file_table.c:244
 [<ffffffff81192564>] task_work_run+0xc4/0xf0 kernel/task_work.c:123
 [<ffffffff8107d238>] tracehook_notify_resume include/linux/tracehook.h:190 [inline]
 [<ffffffff8107d238>] do_notify_resume+0x68/0x70 arch/x86/kernel/signal.c:739
 [<ffffffff827a676b>] int_signal+0x12/0x17
Code: 49 81 3e 40 29 64 83 b8 00 00 00 00 44 0f 44 e0 41 83 fd 01 0f 87 aa fd ff ff 44 89 e8 49 8b 5c c6 08 48 85 db 0f 84 99 fd ff ff <f0> ff 83 98 01 00 00 8b 05 10 6c 11 03 41 8b 8f 60 08 00 00 85 
RIP  [<ffffffff811c403b>] __lock_acquire+0x2db/0x1c70 kernel/locking/lockdep.c:3100
 RSP <ffff8800aaa43b18>
---[ end trace 6fa09b6099d840b9 ]---