* random-sig randomly failing with gdbserver
@ 2013-08-30 11:20 Philippe Waroquiers
2013-08-30 11:36 ` Jan Kratochvil
0 siblings, 1 reply; 4+ messages in thread
From: Philippe Waroquiers @ 2013-08-30 11:20 UTC (permalink / raw)
To: gdb
gdb.base/random-sig.exp (frequently) randomly fails when running with gdbserver,
when running multiple times
make check RUNTESTFLAGS="--target_board native-gdbserver random-signal.exp"
It looks like it can fail for at least three reasons
A successful run gives:
(gdb) PASS: gdb.base/random-signal.exp: watch v
continue
Continuing.
PASS: gdb.base/random-signal.exp: continue
^C
Program received signal SIGINT, Interrupt.
main () at ./gdb.base/random-signal.c:28
28 ;
(gdb) PASS: gdb.base/random-signal.exp: stop with control-c
A failing run gives:
(gdb) PASS: gdb.base/random-signal.exp: watch v
continue
Continuing.
PASS: gdb.base/random-signal.exp: continue
^Cmain () at ./gdb.base/random-signal.c:28
28 ;
Quit
(gdb) FAIL: gdb.base/random-signal.exp: stop with control-c
testcase ./gdb.base/random-signal.exp completed in 1 seconds
It can also fail with:
(gdb) PASS: gdb.base/random-signal.exp: watch v
continue
Continuing.
PASS: gdb.base/random-signal.exp: continue
^CFAIL: gdb.base/random-signal.exp: stop with control-c (timeout)
testcase ./gdb.base/random-signal.exp completed in 11 seconds
Or fail with
(gdb) PASS: gdb.base/random-signal.exp: watch v
continue
Continuing.
PASS: gdb.base/random-signal.exp: continue
^CError evaluating expression for watchpoint 2
Quit
Watchpoint 2 deleted.
main () at ./gdb.base/random-signal.c:28
28 ;
(gdb) FAIL: gdb.base/random-signal.exp: stop with control-c
testcase ./gdb.base/random-signal.exp completed in 1 seconds
Unclear what exactly happens. I suspect a race condition between
gdbserver reporting that the inferior stopped (to examine the
software watchpoint) and gdb sending at the same time
the interrupt, and expecting a SIGINT, but instead receiving
the stopped condition from gdbserver.
Philippe
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: random-sig randomly failing with gdbserver
2013-08-30 11:20 random-sig randomly failing with gdbserver Philippe Waroquiers
@ 2013-08-30 11:36 ` Jan Kratochvil
2013-08-30 11:55 ` Pedro Alves
2013-08-30 11:55 ` Pedro Alves
0 siblings, 2 replies; 4+ messages in thread
From: Jan Kratochvil @ 2013-08-30 11:36 UTC (permalink / raw)
To: Philippe Waroquiers; +Cc: gdb
On Fri, 30 Aug 2013 13:20:28 +0200, Philippe Waroquiers wrote:
> gdb.base/random-sig.exp (frequently) randomly fails when running with gdbserver,
This is a known issue, I see it daily from my nightly runs:
CTRL-C with set debug remote often crashes GDB
https://sourceware.org/bugzilla/show_bug.cgi?id=15297#c2
->
[patchv2 2/2] Fix CTRL-C for remote.c (PR remote/15297)
http://sourceware.org/ml/gdb-patches/2013-06/msg00943.html
Still it is not 100% reliable, it was discussed with Pedro off-list, planning
to send some update.
Jan
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: random-sig randomly failing with gdbserver
2013-08-30 11:36 ` Jan Kratochvil
@ 2013-08-30 11:55 ` Pedro Alves
2013-08-30 11:55 ` Pedro Alves
1 sibling, 0 replies; 4+ messages in thread
From: Pedro Alves @ 2013-08-30 11:55 UTC (permalink / raw)
To: Jan Kratochvil; +Cc: Philippe Waroquiers, gdb
On 08/30/2013 12:36 PM, Jan Kratochvil wrote:
> Still it is not 100% reliable, it was discussed with Pedro off-list, planning
> to send some update.
Yeah, I'm working on it, but I don't have the update ready yet.
--
Pedro Alves
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: random-sig randomly failing with gdbserver
2013-08-30 11:36 ` Jan Kratochvil
2013-08-30 11:55 ` Pedro Alves
@ 2013-08-30 11:55 ` Pedro Alves
1 sibling, 0 replies; 4+ messages in thread
From: Pedro Alves @ 2013-08-30 11:55 UTC (permalink / raw)
To: Jan Kratochvil; +Cc: Philippe Waroquiers, gdb
On 08/30/2013 12:36 PM, Jan Kratochvil wrote:
> Still it is not 100% reliable, it was discussed with Pedro off-list, planning
> to send some update.
Yeah, I've working on it, but I don't have the update ready yet.
--
Pedro Alves
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2013-08-30 11:55 UTC | newest]
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2013-08-30 11:20 random-sig randomly failing with gdbserver Philippe Waroquiers
2013-08-30 11:36 ` Jan Kratochvil
2013-08-30 11:55 ` Pedro Alves
2013-08-30 11:55 ` Pedro Alves
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