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Bug 769651

Summary: Kernel module crash
Product: Red Hat Enterprise Linux 6 Reporter: Vaclav Ehrlich <vehrlich>
Component: kernelAssignee: Red Hat Kernel Manager <kernel-mgr>
Status: CLOSED CURRENTRELEASE QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: medium Docs Contact:
Priority: medium    
Version: 6.2CC: tpelka
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-12-23 10:25:20 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Vaclav Ehrlich 2011-12-21 15:47:06 UTC 
Description of problem:
Laptop is connected via eth0. Wireless is turned on. When attempt to connect secured wifi network is done - kernel crash shows up.
Connection via eth0 is not interrupted.  
When the laptop is disconnected from eth0, attempt to connect secured wifi is done without errors.

Version-Release number of selected component (if applicable):
kernel 2.6.32-220.el6.x86_64

How reproducible:
Always

Steps to Reproduce:
1.Be connected with eth0, have wifi turned on
2.Have some secured wifi networks available
3.Try to connect to one of secured wifi network
  
Actual results:
Kernel crash shows up

Expected results:
Laptop is connected via wifi

Additional info:
Wifi adapter : Intel Corporation Centrino Ultimate-N 6300
Laptop : Lenovo T520


Trace :

13:16:07 kernel: WARNING: at net/wireless/mlme.c:300 __cfg80211_auth_remove+0x6f/0xf0 [cfg80211]() (Tainted: G        W  ----------------  )
13:16:07 kernel: Hardware name: 4243BQ9
13:16:07 kernel: Modules linked in: ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle rfcomm sco bridge stp llc bnep l2cap autofs4 sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i libcxgbi cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi fuse ext2 vhost_net macvtap macvlan tun kvm_intel kvm uinput arc4 thinkpad_acpi ecb iwlagn iwlcore mac80211 cfg80211 sg btusb bluetooth rfkill uvcvideo videodev v4l2_compat_ioctl32 microcode i2c_i801 iTCO_wdt iTCO_vendor_support shpchp snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc e1000e ext4 mbcache jbd2 sd_mod crc_t10dif sr_mod c
13:16:07 kernel: drom firewire_ohci firewire_core crc_itu_t ahci wmi i915 drm_kms_helper drm i2c_algo_bit i2c_core video output dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan]
13:16:07 kernel: Pid: 1429, comm: phy0 Tainted: G        W  ----------------   2.6.32-220.el6.x86_64 #1
13:16:07 kernel: Call Trace:
13:16:07 kernel: [<ffffffff81069b77>] ? warn_slowpath_common+0x87/0xc0
13:16:07 kernel: [<ffffffff81069bca>] ? warn_slowpath_null+0x1a/0x20
13:16:07 kernel: [<ffffffffa037025f>] ? __cfg80211_auth_remove+0x6f/0xf0 [cfg80211]
13:16:07 kernel: [<ffffffffa0370371>] ? cfg80211_send_auth_timeout+0x71/0xd0 [cfg80211]
13:16:07 kernel: [<ffffffff8108c101>] ? queue_delayed_work+0x21/0x40
13:16:07 kernel: [<ffffffffa039b93c>] ? ieee80211_sta_work+0x5fc/0x10d0 [mac80211]
13:16:07 kernel: [<ffffffffa039b340>] ? ieee80211_sta_work+0x0/0x10d0 [mac80211]
13:16:07 kernel: [<ffffffff8108b2b0>] ? worker_thread+0x170/0x2a0
13:16:07 kernel: [<ffffffff81090bf0>] ? autoremove_wake_function+0x0/0x40
13:16:07 kernel: [<ffffffff8108b140>] ? worker_thread+0x0/0x2a0
13:16:07 kernel: [<ffffffff81090886>] ? kthread+0x96/0xa0
13:16:07 kernel: [<ffffffff8100c14a>] ? child_rip+0xa/0x20
13:16:07 kernel: [<ffffffff810907f0>] ? kthread+0x0/0xa0
13:16:07 kernel: [<ffffffff8100c140>] ? child_rip+0x0/0x20
Comment 2 Vaclav Ehrlich 2011-12-23 10:24:12 UTC 
Retested with new kernel 2.6.32-220.2.1.el6.x86_64 and works without errors.