net.ipv6.conf.syz0.accept_dad = 0
net.ipv6.conf.syz0.router_solicitations = 0
executing program
syzkaller login: [   22.547482] kasan: CONFIG_KASAN_INLINE enabled
[   22.547950] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   22.557164] general protection fault: 0000 [#1] SMP KASAN
[   22.557592] Dumping ftrace buffer:
[   22.557830]    (ftrace buffer empty)
[   22.558099] Modules linked in:
[   22.558314] CPU: 0 PID: 2976 Comm: syzkaller948158 Not tainted 4.13.0-rc7-next-20170901+ #13
[   22.558878] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[   22.559708] task: ffff8800683ae740 task.stack: ffff880066eb8000
[   22.560476] RIP: 0010:perf_trace_block_get_rq+0x697/0x970
[   22.561647] RSP: 0018:ffff880066ebf3f0 EFLAGS: 00010246
[   22.562354] RAX: ffff8800683ae740 RBX: 1ffff1000cdd7e84 RCX: 1ffffd1ffa144f82
[   22.562899] RDX: dffffc0000000001 RSI: 1ffff10007d83e7a RDI: ffffe8ffd0a27c10
[   22.563664] RBP: ffff880066ebf530 R08: 1ffff10007d83e6c R09: ffffe8ffd0a27c3c
[   22.564406] R10: 0000000000000002 R11: fffff91ffa144f88 R12: ffffe8ffd0a27ba0
[   22.565824] R13: ffffe8ffd0a27c08 R14: ffffffff85cad9e0 R15: 0000000000000000
[   22.566567] FS:  000000000279a940(0000) GS:ffff88003ec00000(0000) knlGS:0000000000000000
[   22.567692] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.568495] CR2: 0000000020fd0ff7 CR3: 0000000069272000 CR4: 00000000000006f0
[   22.569490] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.570388] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   22.571198] Call Trace:
[   22.571484]  ? _raw_spin_unlock_irq+0x27/0x70
[   22.571976]  ? perf_trace_block_bio_queue+0x8f0/0x8f0
[   22.572565]  ? trace_hardirqs_on+0xd/0x10
[   22.572968]  ? _raw_spin_unlock_irq+0x27/0x70
[   22.574720]  ? cfq_set_request+0x6d5/0xce0
[   22.575061]  ? rcu_pm_notify+0xc0/0xc0
[   22.575342]  ? perf_trace_block_bio_queue+0x8f0/0x8f0
[   22.575703]  get_request+0x1518/0x23b0
[   22.575969]  ? get_request+0x1518/0x23b0
[   22.576279]  ? sg_ioctl+0x192d/0x2ed0
[   22.576560]  ? generic_make_request_checks+0x1cf0/0x1cf0
[   22.577077]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   22.577594]  ? create_task_io_context+0x364/0x540
[   22.578092]  ? rcu_pm_notify+0xc0/0xc0
[   22.578495]  ? do_raw_spin_trylock+0x190/0x190
[   22.578989]  ? __raw_spin_lock_init+0x1c/0x100
[   22.579471]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   22.580005]  ? __lockdep_init_map+0xe4/0x650
[   22.580486]  ? lock_acquire+0x1d5/0x580
[   22.580882]  ? blk_get_request+0x1c8/0x3c0
[   22.581332]  ? __might_fault+0xe0/0x1d0
[   22.581755]  ? lock_release+0xd70/0xd70
[   22.582177]  ? lock_release+0xd70/0xd70
[   22.582605]  ? check_same_owner+0x320/0x320
[   22.583064]  ? finish_wait+0x490/0x490
[   22.583471]  blk_get_request+0x1d8/0x3c0
[   22.583901]  sg_scsi_ioctl+0x117/0x750
[   22.584268]  sg_ioctl+0x192d/0x2ed0
[   22.584566]  ? sg_new_write.isra.20+0x830/0x830
[   22.584881]  ? lock_release+0xd70/0xd70
[   22.585152]  ? is_bpf_text_address+0xa4/0x120
[   22.585467]  ? __kernel_text_address+0xae/0xe0
[   22.585780]  ? avc_has_perm+0x43e/0x680
[   22.586048]  ? avc_has_perm_noaudit+0x520/0x520
[   22.586372]  ? lock_downgrade+0x990/0x990
[   22.586648]  ? quarantine_put+0x10f/0x190
[   22.586926]  ? do_raw_spin_trylock+0x190/0x190
[   22.587228]  ? __fd_install+0x2f7/0x6a0
[   22.587524]  ? file_has_perm+0x2c2/0x500
[   22.587803]  ? get_unused_fd_flags+0x190/0x190
[   22.588212]  ? selinux_capset+0x100/0x100
[   22.588612]  ? sg_new_write.isra.20+0x830/0x830
[   22.589034]  do_vfs_ioctl+0x1b1/0x1530
[   22.589392]  ? ioctl_preallocate+0x2b0/0x2b0
[   22.589781]  ? selinux_capable+0x40/0x40
[   22.590135]  ? putname+0xf3/0x130
[   22.590460]  ? do_sys_open+0x320/0x6d0
[   22.590836]  ? security_file_ioctl+0x7d/0xb0
[   22.591227]  ? security_file_ioctl+0x89/0xb0
[   22.591553]  SyS_ioctl+0x8f/0xc0
[   22.591805]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   22.592119] RIP: 0033:0x43acc9
[   22.592413] RSP: 002b:00000000007dfe48 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
[   22.593097] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043acc9
[   22.594294] RDX: 0000000020001000 RSI: 0000000100000001 RDI: 0000000000000005
[   22.595801] RBP: 0000000000000082 R08: 00000000000000fe R09: 0000000000000000
[   22.596991] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
[   22.598296] R13: 0000000000403290 R14: 0000000000403320 R15: 0000000000000000
[   22.599349] Code: df 48 89 f9 48 c1 e9 03 0f b6 14 11 84 d2 74 09 80 fa 03 0f 8e e1 02 00 00 48 ba 01 00 00 00 00 fc ff df 41 c7 45 08 00 00 00 00 <80> 3a 00 0f 85 b7 02 00 00 4c 8b 3c 25 08 00 00 00 48 ba 00 00 
[   22.602151] RIP: perf_trace_block_get_rq+0x697/0x970 RSP: ffff880066ebf3f0
[   22.603468] ---[ end trace aab4287adfeb05b7 ]---
[   22.604206] Kernel panic - not syncing: Fatal exception
[   22.605322] Dumping ftrace buffer:
[   22.605817]    (ftrace buffer empty)
[   22.606387] Kernel Offset: disabled
[   22.607034] Rebooting in 86400 seconds..