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[tor-bugs] #2097 [- Select a component]: Crash while checking whether directory_crashes_dir_info()
#2097: Crash while checking whether directory_crashes_dir_info()
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Reporter: nickm | Owner:
Type: defect | Status: new
Priority: normal | Milestone:
Component: - Select a component | Version:
Keywords: | Parent:
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rransom found this while testing his patch for bug988. Here's the stack
trace:
{{{
09:47 < rransom> #0 get_net_param_from_list
(net_params=0xb0b0b0b0b0b0b0b, para
m_name=0x4d8880 "refuseunknownexits", default_val=1) at
networkstatus.c:2127
09:51 < rransom> #1 0x00000000004959ec in directory_caches_dir_info
(options=0x1a66790) at dirserv.c:1217
09:51 < rransom> #2 0x0000000000410b20 in
networkstatus_set_current_consensus (consensus=<value optimized out>,
flavor=<value optimized out>, flags=<value optimized out>) at
networkstatus.c:1734
}}}
So set_current_consensus frees the current_consensus, then calls
directory_caches_dir_info, which indirectly calls get_net_param_for_list
on current_consensus, which has been freed.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2097>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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