[BUG] 3.4.109 - unable to handle kernel NULL pointer dereference at (null)

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I merged 3.4.109 into 3.4-rt, and it bugged. I then booted 3.4.109
vanilla and it bugged too. 3.4.108 is fine.

BUG: unable to handle kernel NULL pointer dereference at           (null)
IP: [<          (null)>]           (null)
PGD 76c22067 PUD 78329067 PMD 0
Oops: 0010 [#1] PREEMPT SMP
Dumping ftrace buffer:
   (ftrace buffer empty)
CPU 2
Modules linked in: sunrpc ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables uinput snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_page_alloc snd_timer snd i2c_i801 shpchp soundcore floppy i915 drm_kms_helper drm i2c_algo_bit video [last unloaded: freq_table]

Pid: 69, comm: kworker/u:5 Not tainted 3.4.109-test #409 To Be Filled By O.E.M. To Be Filled By O.E.M./To be filled by O.E.M.
RIP: 0010:[<0000000000000000>]  [<          (null)>]           (null)
RSP: 0018:ffff880037ac3d78  EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff8800774081c8 RCX: 0000000000293a02
RDX: ffff880077408100 RSI: ffff880077409728 RDI: ffff8800774081c8
RBP: ffff880037ac3dc0 R08: 0000000000014350 R09: ffffea0001e29e00
R10: ffffffffa0066b8d R11: ffff880078a78100 R12: ffff880037bf1800
R13: ffff880077409758 R14: 0000000000000001 R15: ffff880037ac7a05
FS:  0000000000000000(0000) GS:ffff88007d500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 0000000078a90000 CR4: 00000000000007e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process kworker/u:5 (pid: 69, threadinfo ffff880037ac2000, task ffff880037a74d80)
Stack:
 ffffffffa0066adc 00000005c838e132 ffff880077408158 ffff880079faf440
 ffff880077408000 ffff880037bf1800 ffff880077409758 0000000000000001
 ffff880037ac7a05 ffff880037ac3df0 ffffffffa00686fe 0000000000000002
Call Trace:
 [<ffffffffa0066adc>] ? i915_gem_retire_requests_ring+0x1f/0x19b [i915]
 [<ffffffffa00686fe>] i915_gem_retire_requests+0x75/0x8a [i915]
 [<ffffffffa006876f>] i915_gem_retire_work_handler+0x5c/0x12a [i915]
 [<ffffffff81059e8f>] ? get_parent_ip+0xf/0x40
 [<ffffffff81049787>] process_one_work+0x187/0x298
 [<ffffffff8104a293>] worker_thread+0xd3/0x157
 [<ffffffff8104a1c0>] ? manage_workers.isra.26+0x16f/0x16f
 [<ffffffff8104dc79>] kthread+0x6f/0x77
 [<ffffffff8151a9d4>] kernel_thread_helper+0x4/0x10
 [<ffffffff81513cce>] ? retint_restore_args+0xe/0xe
 [<ffffffff8104dc0a>] ? kthread_freezable_should_stop+0x43/0x43
 [<ffffffff8151a9d0>] ? gs_change+0xb/0xb
Code:  Bad RIP value.
RIP  [<          (null)>]           (null)
 RSP <ffff880037ac3d78>
CR2: 0000000000000000
eth0: no IPv6 routers present


Config attached.

-- Steve

Attachment: config.gz
Description: application/gzip


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