[haiku-bugs] [Haiku] #9377: Network Stack Deadlock
- From: "jackburton" <trac@xxxxxxxxxxxx>
- Date: Wed, 16 Jan 2013 08:22:24 -0000
#9377: Network Stack Deadlock
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Reporter: jackburton | Owner: axeld
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: Network & Internet/Stack | Version: R1/alpha4.1
Keywords: | Blocked By:
Blocking: | Has a Patch: 0
Platform: All |
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Yesterday I was doing some tests with the network stack, and after a
while, I experienced a deadlock. ifconfig was locked and couldn't be
killed (even with kill -9). net_server was locked, too.
I then entered KDL, and had a look at the threads involved.
There were four threads waiting on the "net_interfaces" mutexes: ifconfig,
net_server, and a couple I can't remember (but it's reproducible, so I'll
try to reproduce it and save more info).
the net_interfaces mutex was held by wpa_supplicant, which was waiting on
the mutex of the wireless interface, which in turn was held by net_server.
So I guess we have a lock inversion somewhere.
Will add stack traces and the rest as soon as I reproduce it again.
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Ticket URL: <http://dev.haiku-os.org/ticket/9377>
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