lkml.org 
[lkml]   [2012]   [Apr]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: Regression introduced by 19b4a8d520a6e0176dd52aaa429261ad4fcaa545 (p54 driver fails with WARNING) , bisected
From
1. apr. 2012 12.55 skrev Bjarke Istrup Pedersen <gurligebis@gmail.com>:
> 1. apr. 2012 05.52 skrev Paul E. McKenney <paulmck@linux.vnet.ibm.com>:
>> On Sun, Mar 25, 2012 at 01:41:23PM +0200, Bjarke Istrup Pedersen wrote:
>>> Hey,
>>>
>>> I'm having a problem with the p54 driver, which seems to be caused by
>>> the commit 19b4a8d520a6e0176dd52aaa429261ad4fcaa545 (found out by
>>> bisecting between v3.1 and v3.2-rc1)
>>>
>>> I'm however unable to spot what in that commit causes the problem,
>>> since it is a merge.
>>>
>>> I have attached the bisect log and the 3 warnings the kernel spit out.
>>>
>>> ----- BISECT LOG START -----
>>>
>>> git bisect start
>>> # good: [c3b92c8787367a8bb53d57d9789b558f1295cc96] Linux 3.1
>>> git bisect good c3b92c8787367a8bb53d57d9789b558f1295cc96
>>> # bad: [1ea6b8f48918282bdca0b32a34095504ee65bab5] Linux 3.2-rc1
>>> git bisect bad 1ea6b8f48918282bdca0b32a34095504ee65bab5
>>> # bad: [37be944a0270402f9cda291a930b0286f6dc92f5] Merge branch
>>> 'drm-core-next' of git://people.freedesktop.org/~airlied/linux
>>> git bisect bad 37be944a0270402f9cda291a930b0286f6dc92f5
>>> # good: [7e0bb71e75020348bee523720a0c2f04cc72f540] Merge branch
>>> 'pm-for-linus' of
>>> git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
>>> git bisect good 7e0bb71e75020348bee523720a0c2f04cc72f540
>>> # good: [46a971913611a23478283931460a95be962ce329] Staging: hv: move
>>> hyperv code out of staging directory
>>> git bisect good 46a971913611a23478283931460a95be962ce329
>>> # bad: [8a4a8918ed6e4a361f4df19f199bbc2d0a89a46c] Merge branch
>>> 'sched-core-for-linus' of
>>> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
>>> git bisect bad 8a4a8918ed6e4a361f4df19f199bbc2d0a89a46c
>>> # good: [aa77677e0a288e08073620db5d2a31df83ca4788] Merge branch
>>> 'staging-next' of
>>> git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
>>> git bisect good aa77677e0a288e08073620db5d2a31df83ca4788
>>> # good: [c752d04066a36ae30b29795f3fa3f536292c1f8c] perf symbols:
>>> Increase symbol KSYM_NAME_LEN size
>>> git bisect good c752d04066a36ae30b29795f3fa3f536292c1f8c
>>> # bad: [19b4a8d520a6e0176dd52aaa429261ad4fcaa545] Merge branch
>>> 'core-rcu-for-linus' of
>>> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
>>> git bisect bad 19b4a8d520a6e0176dd52aaa429261ad4fcaa545
>>> # good: [048b718029033af117870d3da47da12995be14a3] Merge branch
>>> 'rcu/next' of git://github.com/paulmckrcu/linux into core/rcu
>>> git bisect good 048b718029033af117870d3da47da12995be14a3
>>> # good: [96f8e98bfeba3efa82eca85343bc058f6eced888] locking, x86,
>>> iommu: Annotate irq_2_ir_lock as raw
>>> git bisect good 96f8e98bfeba3efa82eca85343bc058f6eced888
>>> # good: [c020570138f5d9cb1fc0a853f9cf9e641178b5c5] x86, ioapic:
>>> Consolidate the explicit EOI code
>>> git bisect good c020570138f5d9cb1fc0a853f9cf9e641178b5c5
>>> # good: [68cc3990a545dc0da221b4844dd8b9c06623a6c5] rtmutex: Add
>>> missing rcu_read_unlock() in debug_rt_mutex_print_deadlock()
>>> git bisect good 68cc3990a545dc0da221b4844dd8b9c06623a6c5
>>> # good: [08613e4626c06ca408fc55071f6aedee36986a87] caif: Fix BUG()
>>> with network namespaces
>>> git bisect good 08613e4626c06ca408fc55071f6aedee36986a87
>>> # good: [982653009b883ef1529089e3e6f1ae2fee41cbe2] Merge branch
>>> 'core-iommu-for-linus' of
>>> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
>>> git bisect good 982653009b883ef1529089e3e6f1ae2fee41cbe2
>>> # good: [3cfef9524677a4ecb392d6fbffe6ebce6302f1d4] Merge branch
>>> 'core-locking-for-linus' of
>>> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
>>> git bisect good 3cfef9524677a4ecb392d6fbffe6ebce6302f1d4
>>>
>>> Result: 19b4a8d520a6e0176dd52aaa429261ad4fcaa545 is the first bad commit
>>>
>>> ----- BISECT LOG END -----
>>>
>>> ----- KERNEL WARNINGS START -----
>>>
>>> ------------[ cut here ]------------
>>> WARNING: at drivers/net/wireless/p54/main.c:348 p54_config+0x179/0x1d8()
>>> Pid: 2529, comm: hostapd Not tainted 3.3.0 #2
>>> Call Trace:
>>>  [<c102511d>] ? warn_slowpath_common+0x65/0x78
>>>  [<c11e579c>] ? p54_config+0x179/0x1d8
>>>  [<c10251ab>] ? warn_slowpath_null+0xd/0x12
>>>  [<c11e579c>] ? p54_config+0x179/0x1d8
>>>  [<c12ee0ce>] ? ieee80211_hw_config+0xe7/0xef
>>>  [<c12fc641>] ? ieee80211_do_open+0x3ab/0x46f
>>>  [<c120b374>] ? __dev_open+0x74/0x9b
>>>  [<c120b59b>] ? __dev_change_flags+0x8c/0x101
>>>  [<c120b671>] ? dev_change_flags+0x10/0x3b
>>>  [<c1256af7>] ? devinet_ioctl+0x254/0x4c4
>>>  [<c120bf62>] ? dev_ioctl+0x543/0x586
>>>  [<c11fd890>] ? sock_ioctl+0x163/0x185
>>>  [<c11fd72d>] ? sock_fasync+0x5e/0x5e
>>>  [<c108e92d>] ? do_vfs_ioctl+0x44d/0x486
>>>  [<c1090b38>] ? dentry_kill+0xe6/0xef
>>>  [<c1090b38>] ? dentry_kill+0xe6/0xef
>>>  [<c1090ce0>] ? dput+0xa1/0xa9
>>>  [<c10842ac>] ? fput+0x126/0x13e
>>>  [<c1094dfa>] ? mnt_add_count.clone.18+0x17/0x21
>>>  [<c108e9aa>] ? sys_ioctl+0x44/0x66
>>>  [<c1317431>] ? syscall_call+0x7/0xb
>>> ---[ end trace 7c0a20dadc443bc0 ]---
>>> ------------[ cut here ]------------
>>> WARNING: at drivers/net/wireless/p54/main.c:351 p54_config+0x19e/0x1d8()
>>> Pid: 2529, comm: hostapd Tainted: G        W    3.3.0 #2
>>> Call Trace:
>>>  [<c102511d>] ? warn_slowpath_common+0x65/0x78
>>>  [<c11e57c1>] ? p54_config+0x19e/0x1d8
>>>  [<c10251ab>] ? warn_slowpath_null+0xd/0x12
>>>  [<c11e57c1>] ? p54_config+0x19e/0x1d8
>>>  [<c12ee0ce>] ? ieee80211_hw_config+0xe7/0xef
>>>  [<c12fc641>] ? ieee80211_do_open+0x3ab/0x46f
>>>  [<c120b374>] ? __dev_open+0x74/0x9b
>>>  [<c120b59b>] ? __dev_change_flags+0x8c/0x101
>>>  [<c120b671>] ? dev_change_flags+0x10/0x3b
>>>  [<c1256af7>] ? devinet_ioctl+0x254/0x4c4
>>>  [<c120bf62>] ? dev_ioctl+0x543/0x586
>>>  [<c11fd890>] ? sock_ioctl+0x163/0x185
>>>  [<c11fd72d>] ? sock_fasync+0x5e/0x5e
>>>  [<c108e92d>] ? do_vfs_ioctl+0x44d/0x486
>>>  [<c1090b38>] ? dentry_kill+0xe6/0xef
>>>  [<c1090b38>] ? dentry_kill+0xe6/0xef
>>>  [<c1090ce0>] ? dput+0xa1/0xa9
>>>  [<c10842ac>] ? fput+0x126/0x13e
>>>  [<c1094dfa>] ? mnt_add_count.clone.18+0x17/0x21
>>>  [<c108e9aa>] ? sys_ioctl+0x44/0x66
>>>  [<c1317431>] ? syscall_call+0x7/0xb
>>> ---[ end trace 7c0a20dadc443bc1 ]---
>>> wan0: no IPv6 routers present
>>> ------------[ cut here ]------------
>>> WARNING: at drivers/net/wireless/p54/main.c:355 p54_config+0x1c6/0x1d8()
>>> Pid: 2529, comm: hostapd Tainted: G        W    3.3.0 #2
>>> Call Trace:
>>>  [<c102511d>] ? warn_slowpath_common+0x65/0x78
>>>  [<c11e57e9>] ? p54_config+0x1c6/0x1d8
>>>  [<c10251ab>] ? warn_slowpath_null+0xd/0x12
>>>  [<c11e57e9>] ? p54_config+0x1c6/0x1d8
>>>  [<c12ee0ce>] ? ieee80211_hw_config+0xe7/0xef
>>>  [<c12fc641>] ? ieee80211_do_open+0x3ab/0x46f
>>>  [<c120b374>] ? __dev_open+0x74/0x9b
>>>  [<c120b59b>] ? __dev_change_flags+0x8c/0x101
>>>  [<c120b671>] ? dev_change_flags+0x10/0x3b
>>>  [<c1256af7>] ? devinet_ioctl+0x254/0x4c4
>>>  [<c120bf62>] ? dev_ioctl+0x543/0x586
>>>  [<c11fd890>] ? sock_ioctl+0x163/0x185
>>>  [<c11fd72d>] ? sock_fasync+0x5e/0x5e
>>>  [<c108e92d>] ? do_vfs_ioctl+0x44d/0x486
>>>  [<c1090b38>] ? dentry_kill+0xe6/0xef
>>>  [<c1090b38>] ? dentry_kill+0xe6/0xef
>>>  [<c1090ce0>] ? dput+0xa1/0xa9
>>>  [<c10842ac>] ? fput+0x126/0x13e
>>>  [<c1094dfa>] ? mnt_add_count.clone.18+0x17/0x21
>>>  [<c108e9aa>] ? sys_ioctl+0x44/0x66
>>>  [<c1317431>] ? syscall_call+0x7/0xb
>>> ---[ end trace 7c0a20dadc443bc2 ]---
>>> device wlan0 entered promiscuous mode
>>> br0: port 3(wlan0) entered forwarding state
>>> br0: port 3(wlan0) entered forwarding state
>>> ------------[ cut here ]------------
>>> WARNING: at drivers/net/wireless/p54/main.c:327 p54_config+0x54/0x1d8()
>>> Pid: 2529, comm: hostapd Tainted: G        W    3.3.0 #2
>>> Call Trace:
>>>  [<c102511d>] ? warn_slowpath_common+0x65/0x78
>>>  [<c11e5677>] ? p54_config+0x54/0x1d8
>>>  [<c10251ab>] ? warn_slowpath_null+0xd/0x12
>>>  [<c11e5677>] ? p54_config+0x54/0x1d8
>>>  [<c12ee0ce>] ? ieee80211_hw_config+0xe7/0xef
>>>  [<c12fe883>] ? ieee80211_set_channel+0xbd/0xea
>>>  [<c12eadf0>] ? cfg80211_set_freq+0xb1/0xdd
>>>  [<c12fe7c6>] ? ieee80211_scan+0x66/0x66
>>>  [<c12e29e5>] ? __nl80211_set_channel.clone.32+0x91/0xbc
>>>  [<c12e2c60>] ? nl80211_set_wiphy+0x23a/0x4c9
>>>  [<c12fe16d>] ? ieee80211_set_cqm_rssi_config+0x72/0x72
>>>  [<c115c736>] ? nla_parse+0x3d/0x96
>>>  [<c12ddb97>] ? nl80211_pre_doit+0x1b/0xcc
>>>  [<c121c92d>] ? genl_rcv_msg+0x1a4/0x1c0
>>>  [<c121c789>] ? genl_rcv+0x20/0x20
>>>  [<c121c121>] ? netlink_rcv_skb+0x2f/0x6f
>>>  [<c121c781>] ? genl_rcv+0x18/0x20
>>>  [<c121b766>] ? netlink_unicast+0xee/0x14c
>>>  [<c121bc3b>] ? netlink_sendmsg+0x1d3/0x1ec
>>>  [<c11fd910>] ? __sock_sendmsg+0x56/0x5f
>>>  [<c11fe1db>] ? sock_sendmsg+0x77/0x8e
>>>  [<c121a2ef>] ? netlink_unlock_table+0x23/0x25
>>>  [<c1205afa>] ? verify_iovec+0x3d/0x74
>>>  [<c11fe359>] ? __sys_sendmsg+0x167/0x200
>>>  [<c11fddfe>] ? sock_sendmsg_nosec+0xd0/0xd0
>>>  [<c1208d9a>] ? dev_name_hash.clone.85+0x1b/0x2c
>>>  [<c1208d9a>] ? dev_name_hash.clone.85+0x1b/0x2c
>>>  [<c120bf62>] ? dev_ioctl+0x543/0x586
>>>  [<c11ffe31>] ? sk_prot_alloc+0x21/0xaf
>>>  [<c1202c75>] ? spin_unlock_irqrestore.clone.45+0x11/0x1b
>>>  [<c1090b38>] ? dentry_kill+0xe6/0xef
>>>  [<c1084067>] ? fget_light+0x27/0x77
>>>  [<c11ff3ad>] ? sys_sendmsg+0x2c/0x47
>>>  [<c11ff850>] ? sys_socketcall+0x16a/0x1be
>>>  [<c10828eb>] ? sys_close+0x57/0x8d
>>>  [<c1317431>] ? syscall_call+0x7/0xb
>>> ---[ end trace 7c0a20dadc443bc3 ]---
>>>
>>> ----- KERNEL WARNINGS END -----
>>>
>>> The warnings are from v3.3, but they are identical to the warnings
>>> that commit causes.
>>>
>>> It seems like there are at least one other than me having this
>>> problem: https://bugzilla.redhat.com/show_bug.cgi?id=804449
>>>
>>> Any help would be greatly appreciated.
>>
>> The merge 19b4a8d520a6e0176dd52aaa429261ad4fcaa545 is based on v3.1-rc8.
>> If possible, could you please bisect the following sequence of commits?
>>
>> o       v3.1-rc8
>> o       1f288094807861ec1e48c428d2c49ccf7aaf3767
>> o       1eb521210a8c9823038abe4ddfe8c69e713ec17d
>> o       ...
>> o       e90c53d3e238dd0b7b02964370e8fece1778df96
>> o       afe24b122eb6edb5f1cb942570ac8d766105c7fc
>
> I tried doing a git checkout of both
> 1f288094807861ec1e48c428d2c49ccf7aaf3767 and
> afe24b122eb6edb5f1cb942570ac8d766105c7fc, and both works fine.
> What is puzzling me, is that it points out a merge that is based
> before v3.1, which works fine.

Points out a commit, sorry :)

Could it be, that it has been so long since that tree has been pulled,
that those commits are dated back end 3.1 was in rc?
Otherwise I cannot figure out why it says it's before 3.1

/Bjarke

> That does not make sense to me.
>
> Best regards,
> Bjarke
>
>> Or am I confused about exactly which merge commit you bisected to?
>>
>>                                                        Thanx, Paul
>>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2012-04-01 14:35    [from the cache]
©2003-2011 Jasper Spaans