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Date: Fri, 24 Jan 2014 20:08:40 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Johannes Berg <johannes.berg@...el.com>
Cc: linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [mac80211] BUG: unable to handle kernel paging request at 6b6b6b8f
Hi Johannes,
The BUG does not show up in linux-next 20140124, is it fixed now?
I got the below dmesg and the first bad commit is
commit c990d19e30cea9f3d39f02c807f09f0be2a5ed71
Author: Johannes Berg <johannes.berg@...el.com>
AuthorDate: Wed Jan 22 10:36:59 2014 +0100
Commit: Johannes Berg <johannes.berg@...el.com>
CommitDate: Wed Jan 22 11:00:56 2014 +0100
mac80211: remove module handling from rate control ops
There's not a single rate control algorithm actually in
a separate module where the module refcount would be
required. Similarly, there's no specific rate control
module.
Therefore, all the module handling code in rate control
is really just dead code, so remove it.
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
+------------------------------------------------------------------------------+--------------+--------------+
| | 99b767b457fe | abcab52cfba5 |
+------------------------------------------------------------------------------+--------------+--------------+
| boot_successes | 0 | 0 |
| boot_failures | 80 | 19 |
| WARNING:CPU:PID:at_drivers/media/v4l2-core/videobuf2-core.c:vb2_queue_init() | 80 | |
| BUG:unable_to_handle_kernel_paging_request_at | 0 | 19 |
| Oops | 0 | 19 |
| EIP_is_at_kobject_get | 0 | 19 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 19 |
+------------------------------------------------------------------------------+--------------+--------------+
[623936.597242] ieee80211 phy0: Failed to select rate control algorithm
[623936.598414] ieee80211 phy0: Failed to initialize rate control algorithm
[623936.599745] mac80211_hwsim: ieee80211_register_hw failed (-2)
[623936.600901] BUG: unable to handle kernel paging request at 6b6b6b8f
[623936.602208] IP: [<c14638e1>] kobject_get+0x3d/0xc1
[623936.603293] *pde = 00000000
[623936.604115] Oops: 0002 [#1]
[623936.604939] CPU: 0 PID: 1 Comm: swapper Not tainted 3.13.0-04758-gabcab52 #159
[623936.606557] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[623936.607648] task: ce060000 ti: ce064000 task.ti: ce064000
[623936.608700] EIP: 0060:[<c14638e1>] EFLAGS: 00010246 CPU: 0
[623936.609769] EIP is at kobject_get+0x3d/0xc1
[623936.610680] EAX: 00000001 EBX: 6b6b6b73 ECX: 00000000 EDX: c0122360
[623936.611825] ESI: c2ce5450 EDI: ce065f04 EBP: ce065ec4 ESP: ce065ec0
[623936.612987] DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
[623936.614033] CR0: 8005003b CR2: 6b6b6b8f CR3: 02fa2000 CR4: 00000690
[623936.615191] Stack:
[623936.615837] 6b6b6b6b ce065ecc c1769a1b ce065ee0 c176facd c2ce5450 fffffffe ce065f04
[623936.618016] ce065ef0 c176e06d c2ce5450 ce065f04 ce065f08 c17707f4 c1770766 00000000
[623936.620196] c17707f4 00000000 ce065f10 c1772b2d ce065f24 c2f1562a c2f14f8a 00000000
[623936.622388] Call Trace:
[623936.623132] [<c1769a1b>] get_device+0x2b/0x41
[623936.624039] [<c176facd>] driver_detach+0x69/0x14e
[623936.625044] [<c176e06d>] bus_remove_driver+0x12d/0x172
[623936.626090] [<c17707f4>] driver_unregister+0x7e/0x91
[623936.627082] [<c1770766>] ? driver_remove_groups+0x19/0x29
[623936.628160] [<c17707f4>] ? driver_unregister+0x7e/0x91
[623936.629157] [<c1772b2d>] platform_driver_unregister+0x19/0x29
[623936.630265] [<c2f1562a>] init_mac80211_hwsim+0x6a0/0x6b8
[623936.631332] [<c2f14f8a>] ? p54p_driver_init+0x32/0x32
[623936.632330] [<c2eb456e>] do_one_initcall+0x131/0x24d
[623936.633350] [<c2eb36a1>] ? repair_env_string+0x32/0xd3
[623936.634411] [<c2eb366f>] ? do_early_param+0x128/0x128
[623936.635436] [<c10ca94a>] ? parse_args+0x41a/0x5cf
[623936.636419] [<c2eb366f>] ? do_early_param+0x128/0x128
[623936.637436] [<c2eb4905>] kernel_init_freeable+0x27b/0x3e9
[623936.638466] [<c2eb4905>] ? kernel_init_freeable+0x27b/0x3e9
[623936.639854] [<c25906c2>] kernel_init+0x16/0x1fa
[623936.641025] [<c25c725b>] ret_from_kernel_thread+0x1b/0x30
[623936.642112] [<c25906ac>] ? rest_init+0xf1/0xf1
[623936.643111] Code: c0 53 89 c3 0f 84 a0 00 00 00 83 05 c8 d4 19 c3 01 83 15 cc d4 19 c3 00 b8 01 00 00 00 83 05 18 c8 19 c3 01 83 15 1c c8 19 c3 00 <0f> c1 43 1c 83 05 20 c8 19 c3 01 83 15 24 c8 19 c3 00 40 48 7f
[623936.650430] EIP: [<c14638e1>] kobject_get+0x3d/0xc1 SS:ESP 0068:ce065ec0
[623936.651747] CR2: 000000006b6b6b8f
[623936.652564] ---[ end trace 788ca11104c0a921 ]---
[623936.653543] Kernel panic - not syncing: Fatal exception
git bisect start abcab52cfba54e0e3b19d88eab7e9d340593b987 d8ec26d7f8287f5788a494f56e8814210f0e64be --
git bisect good e1ebe59b6ae7248f7debe42da4cf14c3a4e076a5 # 16:49 20+ 20 Merge 'drm-intel/drm-intel-fixes' into devel-roam-i386-201401221837
git bisect good 32c0862ea6457f27d049ff8fbe83aeb314358111 # 16:54 20+ 20 Merge 'f2fs/dev' into devel-roam-i386-201401221837
git bisect good 11efa21121b0048691b0c9f210ffeb46e37e88b9 # 17:03 20+ 20 Merge 'f2fs/linux-3.10' into devel-roam-i386-201401221837
git bisect bad 78390893c0628d4e83fb2630bde99c8fd6b0f0d0 # 17:05 0- 2 Merge 'mac80211-next/wip' into devel-roam-i386-201401221837
git bisect good 99b767b457fee362b257229a356a72ae60fea97a # 17:14 20+ 20 mac80211: minstrel_ht: sample_table can be __read_mostly
git bisect bad 97b51a91bbcee1cf217c4af2140c8c9ab7761ddd # 17:16 0- 2 mac80211_hwsim: report survey data for scanned channels
git bisect bad d30ffb10dfa134ef1d1e017e96bc74fd909d0778 # 17:19 0- 18 mac80211_hwsim: make P2P-Device support optional
git bisect bad c990d19e30cea9f3d39f02c807f09f0be2a5ed71 # 17:21 0- 5 mac80211: remove module handling from rate control ops
# first bad commit: [c990d19e30cea9f3d39f02c807f09f0be2a5ed71] mac80211: remove module handling from rate control ops
git bisect good 99b767b457fee362b257229a356a72ae60fea97a # 17:48 60+ 80 mac80211: minstrel_ht: sample_table can be __read_mostly
git bisect bad abcab52cfba54e0e3b19d88eab7e9d340593b987 # 17:49 0- 19 0day head guard for 'devel-roam-i386-201401221837'
git bisect good 6358567276c459f3ea052fdeee6b297bc327ee83 # 18:25 60+ 60 Revert "mac80211: remove module handling from rate control ops"
git bisect good 3aacd625f20129f5a41ea3ff3b5353b0e4dabd01 # 18:38 60+ 60 Merge branch 'akpm' (incoming from Andrew)
git bisect good 0d92c4f9dbb6151bbba41c06f829d46b406fb8a2 # 18:49 60+ 60 Add linux-next specific files for 20140124
Thanks,
Fengguang
View attachment "dmesg-quantal-inn-9:20140122190445:i386-randconfig-r1-0122:3.13.0-04758-gabcab52:159" of type "text/plain" (53667 bytes)
Download attachment "i386-randconfig-r1-0122-abcab52cfba54e0e3b19d88eab7e9d340593b987-BUG:-unable-to-handle-kernel-paging-request-at-70545.log" of type "application/octet-stream" (33246 bytes)
View attachment "config-3.13.0-04758-gabcab52" of type "text/plain" (97932 bytes)
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