Bug 1087501

Summary: [abrt] WARNING: CPU: 1 PID: 5176 at kernel/softirq.c:156 local_bh_enable_ip+0x6a/0x90()
Product: [Fedora] Fedora Reporter: Nerses Gevorgyan <nerses73>
Component: kernelAssignee: fedora-kernel-wireless-realtek
Status: CLOSED INSUFFICIENT_DATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 20CC: gansalmon, itamar, jonathan, kernel-maint, larry.finger, madhu.chinakonda, mchehab
Target Milestone: ---Flags: jforbes: needinfo?
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
URL: https://retrace.fedoraproject.org/faf/reports/bthash/c6a2297a2e962e293e4c86cfb4fc6961a92b9866
Whiteboard: abrt_hash:49fa295bd5e6e5b5e62c84df8730fc308e8eaf60
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-06-23 14:49:32 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:
Attachments:
Description Flags
File: dmesg none

Description Nerses Gevorgyan 2014-04-14 13:18:57 UTC 
Description of problem:
Usually after this my wireless stops working.

Additional info:
reporter:       libreport-2.2.1
WARNING: CPU: 1 PID: 5176 at kernel/softirq.c:156 local_bh_enable_ip+0x6a/0x90()
Modules linked in: fuse ipt_MASQUERADE xt_CHECKSUM tun ccm bnep bluetooth ip6t_rpfilter ip6t_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw binfmt_misc vfat fat snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq arc4 snd_seq_device rtl8188ee x86_pkg_temp_thermal snd_pcm coretemp rtl_pci rtlwifi kvm_intel kvm mac80211 cfg80211 rfkill crct10dif_pclmul crc32_pclmul iTCO_wdt crc32c_intel snd_page_alloc shpchp joydev snd_timer snd iTCO_vendor_support ghash_clmulni_intel
uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev serio_raw media microcode mei_me mei lpc_ich mfd_core soundcore i2c_i801 nfsd auth_rpcgss nfs_acl lockd sunrpc i915 i2c_algo_bit alx drm_kms_helper mdio drm i2c_core video
CPU: 1 PID: 5176 Comm: kworker/u16:1 Not tainted 3.13.9-200.fc20.x86_64 #1
Hardware name: TOSHIBA Satellite C55-A/Portable PC, BIOS 1.30 09/16/2013
Workqueue: phy0 ieee80211_scan_work [mac80211]
0000000000000009 ffff880097263b18 ffffffff81687dac 0000000000000000
ffff880097263b50 ffffffff8106d4dd ffff8800a79adc08 ffffffff81cc7c80
ffffffffa02f0650 0000000000000052 ffff8800b977c7a0 ffff880097263b60
Call Trace:
[<ffffffff81687dac>] dump_stack+0x45/0x56
[<ffffffff8106d4dd>] warn_slowpath_common+0x7d/0xa0
[<ffffffffa02f0650>] ? rtl_pci_reset_trx_ring+0x1a0/0x230 [rtl_pci]
[<ffffffff8106d5ba>] warn_slowpath_null+0x1a/0x20
[<ffffffff8107288a>] local_bh_enable_ip+0x6a/0x90
[<ffffffff8168e676>] _raw_spin_unlock_bh+0x16/0x20
[<ffffffffa05877b2>] destroy_conntrack+0x92/0x110 [nf_conntrack]
[<ffffffff815b49f7>] nf_conntrack_destroy+0x17/0x20
[<ffffffff81574f55>] skb_release_head_state+0xa5/0xf0
[<ffffffff815760d2>] skb_release_all+0x12/0x30
[<ffffffff81576142>] kfree_skb+0x32/0x90
[<ffffffffa02f0650>] rtl_pci_reset_trx_ring+0x1a0/0x230 [rtl_pci]

Potential duplicate: bug 1007589
Comment 1 Nerses Gevorgyan 2014-04-14 13:19:02 UTC 
Created attachment 886137 [details]
File: dmesg
Comment 2 Larry Finger 2014-04-14 17:23:10 UTC 
I took a look at the traceback. As this code is similar in all the rtlwifi-based drivers, I do not understand shy it is happening here, but I will work at sorting it out.

As this is involved with power saving on the wifi link, you should be able to avoid it by loading rtl8188ee with power saving disabled.

One way to do this is to run the following commands (as root):

echo "options rtl8188eu ips=0" > /etc/modprobe.d/50-rtl8188ee.conf
modprobe -rv rtl8188ee
modprobe -v rtl8188ee

The last command should show that rtl8188ee was loaded with ips equal to zero.
Comment 3 Justin M. Forbes 2014-05-21 19:40:49 UTC 
*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There is a large number of bugs to go through and several of them have gone stale.  Due to this, we are doing a mass bug update across all of the Fedora 20 kernel bugs.

Fedora 20 has now been rebased to 3.14.4-200.fc20.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.

If you experience different issues, please open a new bug report for those.
Comment 4 Justin M. Forbes 2014-06-23 14:49:32 UTC 
*********** MASS BUG UPDATE **************
This bug is being closed with INSUFFICIENT_DATA as there has not been a response in 4 weeks. If you are still experiencing this issue, please reopen and attach the relevant data from the latest kernel you are running and any data that might have been requested previously.