On Thu, Jan 03, 2008 at 10:30:29PM +0530, Y Giridhar Appaji Nag wrote: > Package: ltrace > Version: 0.5-3 > Severity: important > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > I am able to reproduce this consistently. > > I have "elinks yahoo.com" running with pid 5292 and I do > > $ ltrace -f -o foo.txt -p 5292 > > Then I go to elinks, press CTRL+H and come back to ltrace and kill it with a > CTRL+C. This crashes ltrace with the following output > > *** glibc detected *** ltrace: double free or corruption (!prev): 0x08061008 > ***
Among my first activities getting started contributing to debian was to look at this bug. Looks like this is from a file being close()d twice: once in the signal handler and then during exit. As it turns out, this seems to have been recently fixed [1] so this bug can be marked "pending" I guess. [1] http://git.debian.org/?p=collab-maint/ltrace.git;a=commit;h=375ef8e667be88645f6af6bb099f04471c7f53cd > ======= Backtrace: ========= > /lib/i686/cmov/libc.so.6[0x400ae735] > /lib/i686/cmov/libc.so.6(cfree+0x90)[0x400b21a0] > /lib/i686/cmov/libc.so.6(fclose+0x134)[0x4009d054] > ltrace[0x804a4ad] > /lib/i686/cmov/libc.so.6(exit+0xd4)[0x40070eb4] > ltrace[0x804d059] > ltrace[0x804a237] > /lib/i686/cmov/libc.so.6(__libc_start_main+0xe0)[0x40059450] > ltrace[0x8049871] > ======= Memory map: ======== > 08048000-0805f000 r-xp 00000000 08:07 134295 /usr/bin/ltrace > 0805f000-08060000 rw-p 00017000 08:07 134295 /usr/bin/ltrace > 08060000-08082000 rw-p 08060000 00:00 0 [heap] > 40000000-4001c000 r-xp 00000000 08:07 469629 /lib/ld-2.7.so > 4001c000-4001e000 rw-p 0001b000 08:07 469629 /lib/ld-2.7.so > 4001e000-40020000 rw-p 4001e000 00:00 0 > 4002e000-40042000 r-xp 00000000 08:07 231738 /usr/lib/libelf.so.0.8.6 > 40042000-40043000 rw-p 00013000 08:07 231738 /usr/lib/libelf.so.0.8.6 > 40043000-4018a000 r-xp 00000000 08:07 724 /lib/i686/cmov/libc-2.7.so > 4018a000-4018b000 r--p 00147000 08:07 724 /lib/i686/cmov/libc-2.7.so > 4018b000-4018d000 rw-p 00148000 08:07 724 /lib/i686/cmov/libc-2.7.so > 4018d000-40191000 rw-p 4018d000 00:00 0 > 40191000-4019b000 r-xp 00000000 08:07 470998 /lib/libgcc_s.so.1 > 4019b000-4019c000 rw-p 00009000 08:07 470998 /lib/libgcc_s.so.1 > 40200000-40221000 rw-p 40200000 00:00 0 > 40221000-40300000 ---p 40221000 00:00 0 > bfa8d000-bfaa3000 rw-p bfa8d000 00:00 0 [stack] > ffffe000-fffff000 r-xp 00000000 00:00 0 [vdso] > [1] 5309 abort (core dumped) ltrace -f -o foo.txt -p 5292 > [loktak ~]Om:-} vi foo1.txt > > Giridhar > > - -- > Y Giridhar Appaji Nag | http://www.appaji.net/ > > - -- System Information: > Debian Release: lenny/sid > APT prefers unstable > APT policy: (800, 'unstable'), (700, 'experimental') > Architecture: i386 (i686) > > Kernel: Linux 2.6.22-3-686 (SMP w/1 CPU core) > Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968) > Shell: /bin/sh linked to /bin/bash > > Versions of packages ltrace depends on: > ii libc6 2.7-5 GNU C Library: Shared libraries > ii libelfg0 0.8.6-4 an ELF object file access library > > ltrace recommends no packages. > > - -- no debconf information > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.6 (GNU/Linux) > > iD8DBQFHfRSt4eu+pR04mIcRAmaqAKDjgejyihqvpKflsfJUaX5VDuEoXQCfexXQ > mNbJJQYfk52KWE0/BAQDZUw= > =GWIw > -----END PGP SIGNATURE----- > > > -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
