Red Hat Bugzilla – Bug 431800
repeatable hang of rmmod of rtl8187
Last modified: 2014-06-16 09:11:30 EDT
Description of problem:
rmmod of rtl8187 hangs and rmmod and ksoftirqd go to 100% CPU in top. this
happens after the network 'goes dead' which happens after about 15-30 minutes of
Version-Release number of selected component (if applicable):
kernel-126.96.36.199-107.fc8, x86_64. dual core processor
every time i use the card it dies within 15 minutes, and after this rmmod hangs
Steps to Reproduce:
2. let nytimes.com reload for a while by itself until the network dies
rmmod hangs, ksoftirqd and rmmod go to 100%
i have dmesg and output from sysrq-t available, but it doesn't seem to include a
stack trace of rmmod or ksoftirqd. in fact, the capture of sysrq-t is almost
definitely truncated (see beginning of attached file)
i'm going to attach the syslog capture of the sysrq-t
Created attachment 294174 [details]
sysrq-t after hang
A lot of work has gone into the rtl8187 driver recently because of the rtl8187b work in 2.6.26.x/2.6.27.x. Is this still an issue?
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Recently one of us specifically made some changes to address this issue in the rtl8187 code. This should no longer be the issue with a sufficiently new driver code - the change will likely land in 2.6.29. People can't wait should get compat-wireless today.
I'm a "needinfo" but this is a dead issue.