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<body><span class="vcard"><a class="email" href="mailto:daniel@ffwll.ch" title="Daniel Vetter <daniel@ffwll.ch>"> <span class="fn">Daniel Vetter</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [HSW bisected] igt/module_reload randomly causes system hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65880">bug 65880</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>gordon.jin@intel.com, yi.sun@intel.com
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [HSW bisected] igt/module_reload randomly causes system hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65880#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [HSW bisected] igt/module_reload randomly causes system hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65880">bug 65880</a>
from <span class="vcard"><a class="email" href="mailto:daniel@ffwll.ch" title="Daniel Vetter <daniel@ffwll.ch>"> <span class="fn">Daniel Vetter</span></a>
</span></b>
<pre>Quick note on bug filing BKMs:
When pasting a backtrace always paste the first backtrace, not the last one
like here. Usually later backtraces are just follow-up fallout. So in this case
the right paste would be
[ 168.675293] IP: [<ffffffffa007751c>] ivb_can_enable_err_int+0x20/0x33 [i915]
[ 168.675306] PGD 0
[ 168.675308] Oops: 0000 [#1] SMP
[ 168.675309] Modules linked in: i915(+) drm_kms_helper drm netconsole
configfs ipv6 dm_mod acpi_cpufreq coretemp kvm_intel kvm snd_hda_codec_realtek
microcode pcspkr i2c_i801 iTCO_wdt iTCO_vendor_support snd_hda_intel lpc_ich
snd_hda_codec mfd_core snd_hwdep snd_pcm snd_page_alloc snd_timer snd soundcore
video button mperf freq_table [last unloaded: drm]
[ 168.675321] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
3.10.0-rc5_nightlytop_c18149_20130618_+ #4155
[ 168.675322] Hardware name: Intel Corporation Shark Bay Client
platform/Flathead Creek Crb, BIOS HSWLPTU1.86C.0109.R03.1301282055 01/28/2013
[ 168.675323] task: ffffffff81a58410 ti: ffffffff81a48000 task.ti:
ffffffff81a48000
[ 168.675324] RIP: 0010:[<ffffffffa007751c>] [<ffffffffa007751c>]
ivb_can_enable_err_int+0x20/0x33 [i915]
[ 168.675334] RSP: 0018:ffff88024e203ea0 EFLAGS: 00010002
[ 168.675335] RAX: 0000000000000001 RBX: ffff88023e118000 RCX:
0000000000000003
[ 168.675336] RDX: ffff88023e118000 RSI: 0000000000000000 RDI:
ffff880243ed5800
[ 168.675336] RBP: ffff880243ed5800 R08: ffffffff816f42f0 R09:
000000000000b5a1
[ 168.675337] R10: 00000000000000f6 R11: 00000000000000f6 R12:
0000000000000010
[ 168.675337] R13: 0000000000000001 R14: 00000000ffffffff R15:
0000000000000002
[ 168.675338] FS: 0000000000000000(0000) GS:ffff88024e200000(0000)
knlGS:0000000000000000
[ 168.675339] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 168.675340] CR2: 0000000000000920 CR3: 000000024316f000 CR4:
00000000001407f0
[ 168.675341] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 168.675341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 168.675341] Stack:
[ 168.675342] ffffffffa007ccde 000000000000012c f400252900000040
ffff88024e212150
[ 168.675343] ffff88023f137c00 ffff88023f3a0500 000000000000002b
0000000000000000
[ 168.675345] 0000000000000000 000000000000f000 ffffffff81082bbb
ffff880245400000
[ 168.675346] Call Trace:
[ 168.675347] <IRQ> [<ffffffffa007ccde>] ? ivybridge_irq_handler+0x429/0x491
[i915]
[ 168.675358] [<ffffffff81082bbb>] ? handle_irq_event_percpu+0x24/0x119
[ 168.675362] [<ffffffff81082cde>] ? handle_irq_event+0x2e/0x4c
[ 168.675364] [<ffffffff81085019>] ? handle_edge_irq+0xbb/0xde
[ 168.675366] [<ffffffff810038c1>] ? handle_irq+0x15/0x1d
[ 168.675368] [<ffffffff810035bd>] ? do_IRQ+0x41/0xa6
[ 168.675370] [<ffffffff816e3a2a>] ? common_interrupt+0x6a/0x6a
[ 168.675372] <EOI> [<ffffffff815ff34c>] ? cpuidle_enter_state+0x43/0xa6
[ 168.675376] [<ffffffff815ff345>] ? cpuidle_enter_state+0x3c/0xa6
[ 168.675377] [<ffffffff815ff46e>] ? cpuidle_idle_call+0xbf/0x10b
[ 168.675378] [<ffffffff810085cb>] ? arch_cpu_idle+0x6/0x17
[ 168.675380] [<ffffffff8105dd7c>] ? cpu_startup_entry+0xa1/0xfd
[ 168.675382] [<ffffffff81b08c6a>] ? start_kernel+0x378/0x383
[ 168.675384] [<ffffffff81b08708>] ? repair_env_string+0x57/0x57
[ 168.675386] Code: 05 e1 b8 01 00 00 00 c3 0f 1f 00 48 8b 97 30 03 00 00 48
8b 42 10 8a 48 04 31 c0 83 e1 07 eb 14 48 8b b4 c2 d8 22 00 00 48 ff c0 <80> be
20 09 00 00 00 75 07 39 c1 77 e8 b0 01 c3 31 c0 c3 8b 97
[ 168.675404] RIP [<ffffffffa007751c>] ivb_can_enable_err_int+0x20/0x33
[i915]
[ 168.675413] RSP <ffff88024e203ea0>
[ 168.675414] CR2: 0000000000000920
[ 168.675415] ---[ end trace 51d2d549a433189e ]---
[ 168.675416] Kernel panic - not syncing: Fatal exception in interrupt
Although in this case it looks a bit like 2 backtraces are a bit interleaved,
so a more complicated situation. CC'ing Sun Yi and Gordon Jin to take note of
this BKM.</pre>
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