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From: "cagney at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: frysk-bugzilla@sourceware.org
Subject: [Bug general/4389] ptrace in event-loop causes TestBreakpoints inferior to sig-seg-v
Date: Tue, 17 Apr 2007 22:46:00 -0000	[thread overview]
Message-ID: <20070417224604.4525.qmail@sourceware.org> (raw)
In-Reply-To: <20070417225454.4389.cagney@redhat.com>


------- Additional Comments From cagney at redhat dot com  2007-04-17 23:46 -------
Here are the dieing moments of the trace; pt=7 is PT_CONTINUE:

poke space=frysk.sys.Ptrace$AddressSpace@3c7970:USR pid=3664 index=114 value=f0
ptrace: pt=3 pid=3664 addr=0x114 data=0x0 -> 0xffff0ff0
ptrace: pt=6 pid=3664 addr=0x114 data=0xffff0ff0 -> 0x0
poke space=frysk.sys.Ptrace$AddressSpace@3c7970:USR pid=3664 index=115 value=f
ptrace: pt=3 pid=3664 addr=0x114 data=0x0 -> 0xffff0ff0
ptrace: pt=6 pid=3664 addr=0x114 data=0xffff0ff0 -> 0x0
poke space=frysk.sys.Ptrace$AddressSpace@3c7970:USR pid=3664 index=116 value=ff
ptrace: pt=3 pid=3664 addr=0x114 data=0x0 -> 0xffff0ff0
ptrace: pt=6 pid=3664 addr=0x114 data=0xffff0ff0 -> 0x0
poke space=frysk.sys.Ptrace$AddressSpace@3c7970:USR pid=3664 index=117 value=ff
ptrace: pt=3 pid=3664 addr=0x114 data=0x0 -> 0xffff0ff0
ptrace: pt=6 pid=3664 addr=0x114 data=0xffff0ff0 -> 0x0
ptrace: pt=12 pid=3664 addr=0x0 data=0x3c2378 -> 0x0
ptrace: pt=7 pid=3664 addr=0x0 data=0x5 -> 0x0
ptrace: pt=7 pid=3664 addr=0x0 data=0xb -> 0x0
ptrace: pt=16897 pid=3664 addr=0x0 data=0xbfb16ad8 -> 0x0
ptrace: pt=7 pid=3664 addr=0x0 data=0xb -> 0x0

and it's sending PT_CONT of signal 5/SIGTRAP to the process.  Per other
discussion, if in a signal handler this can kill the inferior.

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=4389

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  parent reply	other threads:[~2007-04-17 22:46 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-17 21:55 [Bug general/4389] New: " cagney at redhat dot com
2007-04-17 22:34 ` [Bug general/4389] " cagney at redhat dot com
2007-04-17 22:46 ` cagney at redhat dot com [this message]
2007-04-18 11:35 ` mark at klomp dot org
2007-04-18 12:10 ` mark at klomp dot org
2007-04-18 17:58 ` cagney at redhat dot com
2007-04-19 12:55 ` mark at klomp dot org
2007-04-19 14:21 ` cagney at redhat dot com
2007-04-19 17:03 ` cagney at redhat dot com

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