From: Pierre Neidhardt <mail@ambrevar.xyz>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: 30785@debbugs.gnu.org
Subject: bug#30785: Man pages truncated, repeated
Date: Mon, 14 Jan 2019 17:24:55 +0100 [thread overview]
Message-ID: <87won78aw8.fsf@ambrevar.xyz> (raw)
In-Reply-To: <87a7k3rzio.fsf@gnu.org>
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ludo@gnu.org (Ludovic Courtès) writes:
> Maybe it’s just that the inferior is still running, no?
Well, it should finish in a fraction of a second.
sudo sh -c "echo '/tmp/core_%e.%p' > /proc/sys/kernel/core_pattern"
> ulimit -c unlimited
> man whatever that causes the crash
> gdb /path/to/preconv core
Smart!
This gave me no coredump at first because the pipeline "cd" into the
store/profile, which is readonly. So I did
--8<---------------cut here---------------start------------->8---
sudo sh -c "echo '/tmp/core_%e.%p' > /proc/sys/kernel/core_pattern"
--8<---------------cut here---------------end--------------->8---
and then the segfault would generate a core. From which GDB gives me:
--8<---------------cut here---------------start------------->8---
Core was generated by `preconv -e UTF-8'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 __stpcpy_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S:298
298 ../sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S: No such file or directory.
(gdb) bt
#0 __stpcpy_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S:298
#1 0x00000000004062c3 in relocatep ()
#2 0x0000000000405b5d in locale_charset ()
#3 0x0000000000402445 in main ()
(gdb)
--8<---------------cut here---------------end--------------->8---
I haven't looked at the code yet, but here is my clue: argv[0], the program
name, is too long and overflows some string.
--
Pierre Neidhardt
https://ambrevar.xyz/
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next prev parent reply other threads:[~2019-01-14 16:25 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-12 21:24 bug#30785: Man pages truncated, repeated Tobias Geerinckx-Rice
2018-03-13 21:34 ` Ludovic Courtès
2018-03-13 22:01 ` Tobias Geerinckx-Rice
2018-03-14 13:22 ` Ludovic Courtès
2018-03-14 13:43 ` Andreas Enge
2018-03-15 0:40 ` Marius Bakke
2018-05-05 21:40 ` Marius Bakke
2018-05-06 13:53 ` Marius Bakke
2018-05-06 22:06 ` Marius Bakke
2018-05-05 1:31 ` Vagrant Cascadian
2018-08-20 10:32 ` Pierre Neidhardt
2019-01-13 16:09 ` Pierre Neidhardt
2019-01-13 16:15 ` Pierre Neidhardt
2019-01-13 17:00 ` Ludovic Courtès
2019-01-13 17:31 ` Pierre Neidhardt
2019-01-13 17:43 ` Pierre Neidhardt
2019-01-13 20:27 ` Ludovic Courtès
2019-01-13 20:37 ` Pierre Neidhardt
2019-01-14 8:36 ` Ludovic Courtès
2019-01-14 8:49 ` Pierre Neidhardt
2019-01-14 10:19 ` Pierre Neidhardt
2019-01-14 10:59 ` Gábor Boskovits
2019-01-14 15:06 ` Pierre Neidhardt
2019-01-14 16:10 ` Ludovic Courtès
2019-01-14 16:24 ` Pierre Neidhardt [this message]
2019-01-14 16:42 ` Danny Milosavljevic
2019-01-14 16:57 ` Pierre Neidhardt
2019-01-14 17:46 ` Danny Milosavljevic
2019-01-14 17:48 ` Danny Milosavljevic
2019-01-14 17:50 ` Danny Milosavljevic
2019-01-14 18:19 ` Pierre Neidhardt
2019-01-14 20:27 ` Ludovic Courtès
2019-01-14 21:42 ` Danny Milosavljevic
2019-01-14 21:59 ` Pierre Neidhardt
2019-01-14 22:14 ` Danny Milosavljevic
2019-01-14 22:39 ` Pierre Neidhardt
2019-01-15 12:29 ` Ludovic Courtès
2019-01-16 10:01 ` Pierre Neidhardt
2019-01-16 10:56 ` Danny Milosavljevic
2019-01-16 13:02 ` Pierre Neidhardt
2019-01-16 14:17 ` Danny Milosavljevic
2019-01-16 17:39 ` Pierre Neidhardt
2019-01-16 18:12 ` Efraim Flashner
2019-01-16 18:18 ` Pierre Neidhardt
2019-01-16 19:57 ` Danny Milosavljevic
2019-01-16 22:32 ` Ludovic Courtès
2019-01-16 22:45 ` Danny Milosavljevic
2019-01-17 7:31 ` Pierre Neidhardt
2019-01-17 8:43 ` Ludovic Courtès
2019-01-17 9:39 ` Pierre Neidhardt
2019-01-17 9:42 ` Pierre Neidhardt
2019-01-17 11:32 ` Pierre Neidhardt
2019-11-28 0:13 ` Marius Bakke
2019-01-17 9:10 ` Danny Milosavljevic
2019-01-17 8:33 ` Ludovic Courtès
2019-01-17 8:41 ` Pierre Neidhardt
2021-04-22 18:53 ` G. Branden Robinson
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