Your message dated Sun, 12 Apr 2009 14:11:41 +0200 with message-id <[email protected]> and subject line fixed has caused the Debian Bug report #466771, regarding busybox cpio: does not unpack hardlinks to empty files to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 466771: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=466771 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: busybox Version: 1:1.1.3-5 Severity: important -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 busybox cpio seems to corrupt its memory (maybe with a double free?) when extracting a hardlink. Here's a transcript of a simple case to trigger the failure: 0 d...@ape:/tmp$ mkdir tt 0 d...@ape:/tmp$ touch tt/x 0 d...@ape:/tmp$ ln tt/x tt/y 0 d...@ape:/tmp$ mkdir xx 0 d...@ape:/tmp$ find tt | cpio -H newc --create | (cd xx && busybox cpio -i) 1 block 1 blocks cpio: TRAILER!!! not created: cannot resolve hardlink cpio: (null) not created: cannot resolve hardlink *** glibc detected *** busybox: double free or corruption (fasttop): 0x08178048 *** ======= Backtrace: ========= /lib/i686/cmov/libc.so.6[0xb7dd8915] /lib/i686/cmov/libc.so.6(cfree+0x90)[0xb7ddc380] busybox[0x805378b] ======= Memory map: ======== 08048000-080ac000 r-xp 00000000 fd:0a 65545 /bin/busybox 080ac000-080ae000 rwxp 00064000 fd:0a 65545 /bin/busybox 080ae000-08199000 rwxp 080ae000 00:00 0 [heap] b7c00000-b7c21000 rwxp b7c00000 00:00 0 b7c21000-b7d00000 ---p b7c21000 00:00 0 b7d6c000-b7d6d000 rwxp b7d6c000 00:00 0 b7d6d000-b7eb4000 r-xp 00000000 fd:0a 114782 /lib/i686/cmov/libc-2.7.so b7eb4000-b7eb5000 r-xp 00147000 fd:0a 114782 /lib/i686/cmov/libc-2.7.so b7eb5000-b7eb7000 rwxp 00148000 fd:0a 114782 /lib/i686/cmov/libc-2.7.so b7eb7000-b7eba000 rwxp b7eb7000 00:00 0 b7eba000-b7edd000 r-xp 00000000 fd:0a 114787 /lib/i686/cmov/libm-2.7.so b7edd000-b7edf000 rwxp 00023000 fd:0a 114787 /lib/i686/cmov/libm-2.7.so b7edf000-b7ee8000 r-xp 00000000 fd:0a 114784 /lib/i686/cmov/libcrypt-2.7.so b7ee8000-b7eea000 rwxp 00008000 fd:0a 114784 /lib/i686/cmov/libcrypt-2.7.so b7eea000-b7f12000 rwxp b7eea000 00:00 0 b7f1a000-b7f26000 r-xp 00000000 fd:0a 114764 /lib/libgcc_s.so.1 b7f26000-b7f27000 rwxp 0000b000 fd:0a 114764 /lib/libgcc_s.so.1 b7f27000-b7f29000 rwxp b7f27000 00:00 0 b7f29000-b7f45000 r-xp 00000000 fd:0a 114725 /lib/ld-2.7.so b7f45000-b7f47000 rwxp 0001b000 fd:0a 114725 /lib/ld-2.7.so bffb3000-bffc8000 rw-p bffeb000 00:00 0 [stack] ffffe000-fffff000 r-xp 00000000 00:00 0 [vdso] 134 d...@ape:/tmp$ The standard cpio doesn't seem to have this problem: 0 d...@ape:/tmp$ rm -rf xx 0 d...@ape:/tmp$ mkdir xx 0 d...@ape:/tmp$ find tt | cpio -H newc --create | (cd xx && cpio -i) 1 block 1 block 0 d...@ape:/tmp$ ls -lR xx xx: total 0 drwxr-xr-x 2 wt215 wt215 80 2008-02-20 15:26 tt xx/tt: total 0 - -rw-r--r-- 2 wt215 wt215 0 2008-02-20 15:26 x - -rw-r--r-- 2 wt215 wt215 0 2008-02-20 15:26 y 0 d...@ape:/tmp$ This seems to happen with -t (list) the same as -i (extract), so i expect it's a problem with parsing, not file creation. fwiw, it doesn't seem to be a problem with busybox 1.9.1, as built with waldi's debian packaging at: svn://svn.debian.org/d-i/people/waldi/packages/busybox/debian With version 1.9.1, it still doesn't unpack the hardlinks, but it doesn't double-free, at least: 0 d...@ape:/tmp$ find tt | cpio -H newc --create | (cd xx && ~/src/busybox/busybox-1.9.1/debian/busybox/bin/busybox cpio -i) 1 block 1 blocks cpio: tt/x not created: cannot resolve hardlink cpio: tt/y not created: cannot resolve hardlink 0 d...@ape:/tmp$ find xx xx xx/tt 0 d...@ape:/tmp$ Thanks for maintaining busybox in debian! --dkg - -- System Information: Debian Release: lenny/sid APT prefers testing APT policy: (500, 'testing'), (200, 'unstable'), (101, 'experimental') Architecture: i386 (i686) Kernel: Linux 2.6.24-1-686 (SMP w/1 CPU core) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages busybox depends on: ii libc6 2.7-6 GNU C Library: Shared libraries busybox recommends no packages. - -- no debconf information -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iQIVAwUBR7yP7szS7ZTSFznpAQKKqw/+MzMP1qA+Ips+xfvshkybvzi436MaDdCM byP3jbAK0JHvH4Yp4d80ZZD09S21LhlEIfMvPfrZmjmnrWw89QiTB61mNuJHq8xB JmaHZku/5uXsM5xhk8aTv9xLWrC0R/6iUu3r+9sUwWKwcg3SwCeFeLitV08TYlgM pO7Fr1uVpBd13A5JZiLvgoSEC6BIjR1ct3yzDbi7B1oOMwPQBF+BkSxUmOsEsQU1 C4VhS+kvQ6YLFqc07PlXbaGH78waWbo2z3Oacsn7gEVbbNKjTIorwcvlAu9fYPHy MbufuWlVQyddJIwHj9b3Qtq28xHDDyZYn5pnSJ2xjl7Q4OZcbUCSUWnRjUp2SJGH ZQJZpEBE7utYBDWYFsAuq8vGVziOk47/TZSgWqWvCxHt/ZqBrkGsAlrItL9Ies+C VmQGU7yqbouRHovrc2vwDsB1j8MjUt2DfrHNt+7ElSBcGwKnhdkeK7gEfLFRuLUp jvOAzFISdGurDEgkNkmZRKinS+/98xy4RvxKXkp4JpVXiF+SNMAwzsgivuYdYQ+g /UKSLVHEgly4KogPYXwEAT7/GD6jkgZgmVnJycAdhXSMGyGWUF6AkAFfuqPHk8u3 d5tB72G8jhkVu9IPx/g2fhczu1BNKXllOQBpzGnYkMbUPSKj8xgvn761zZeYKaZM 9bihbCO4/mQ= =vs9z -----END PGP SIGNATURE-----
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--- Begin Message ---This was fixed some time ago. Bastian -- Conquest is easy. Control is not. -- Kirk, "Mirror, Mirror", stardate unknown
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