On Mon, Jun 27, 2011 at 01:44:01PM +0200, Alban Browaeys wrote:
>
> Package: libcap-ng0
> Version: 0.6.6-1
> Severity: important
>
> The issue about memset is back . I used gcc-4.6.real (Debian 4.6.0-14) 4.6.1
> 20110616 (prerelease).
> I rebuild the package locally first with dpkg-buildpackage -rfakeroot -b -uc
> -us then make; make install
> to get the debugging symbols (using the previous debian generated makefiles).
Hi,
One important change I made to the 0.6.6 packages is that I enabled the
hardening wrapper, which adds some flags to the compiler.
Could you test if the problem is related to the optimization (as in
#546823),
or if commenting the line
export DEB_BUILD_HARDENING=1
on top of debian/rules solves the problem ?
Thanks,
Pierre
>
> filecap backtrace:
> eading symbols from /usr/bin/filecap...done.
> (gdb) r
> Starting program: /usr/bin/filecap
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x40039f78 in init () at cap-ng.c:152
> 152 memset(&m.hdr, 0, sizeof(m.hdr));
> (gdb) bt full
> #0 0x40039f78 in init () at cap-ng.c:152
> No locals.
> #1 0x4003a18c in capng_clear (set=CAPNG_SELECT_BOTH) at cap-ng.c:176
> No locals.
> #2 0x40000ba8 in check_file (fpath=0x40171050 "/usr/sbin/NetworkManager",
> sb=0xbeffe4d0, typeflag_unused=0, s_unused=0xbefff62c) at filecap.c:56
> rc = 36553
> fd = 6
> #3 0x400faed8 in process_entry (data=0xbefff618, dir=0xbeffe57c,
> name=0x401720b3 "NetworkManager", namlen=<value optimized out>, d_type=8)
> at ftw.c:470
> st = {st_dev = 45857, __pad1 = 0, st_ino = 36553, st_mode = 33261,
> st_nlink = 1, st_uid = 0, st_gid = 0, st_rdev = 0, __pad2 = 0,
> st_size = 718376, st_blksize = 4096, st_blocks = 1408, st_atim =
> {tv_sec = 1309057780, tv_nsec = 380737313}, st_mtim = {
> tv_sec = 1306726376, tv_nsec = 0}, st_ctim = {tv_sec =
> 1309055517, tv_nsec = 529174812}, __unused4 = 0, __unused5 = 0}
> result = <value optimized out>
> flag = <value optimized out>
> new_buflen = <value optimized out>
> statres = <value optimized out>
> #4 0x400fb1ec in ftw_dir (data=0xbefff618, st=<value optimized out>,
> old_dir=<value optimized out>) at ftw.c:546
> dir = {stream = 0x40172058, streamfd = 5, content = 0x0}
> d = 0x401720a0
> previous_base = 5
> result = 0
> startp = <value optimized out>
> __PRETTY_FUNCTION__ = "ftw_dir"
> #5 0x400fb950 in ftw_startup (dir=<value optimized out>, is_nftw=<value
> optimized out>, func=<value optimized out>,
> descriptors=<value optimized out>, flags=1) at ftw.c:772
> name = 0x40171050 "/usr/sbin/NetworkManager"
> data = {dirstreams = 0xbeffe5b0, actdir = 1, maxdir = 1024, dirbuf =
> 0x40171050 "/usr/sbin/NetworkManager", dirbufsize = 4096, ftw = {
> base = 10, level = 1}, flags = 1, cvt_arr = 0x4015340c, func =
> 0x40000b4c <check_file>, dev = 45857, known_objects = 0x0}
> st = {st_dev = 45857, __pad1 = 0, st_ino = 175, st_mode = 16877,
> st_nlink = 2, st_uid = 0, st_gid = 0, st_rdev = 0, __pad2 = 0,
> st_size = 12288, st_blksize = 4096, st_blocks = 24, st_atim =
> {tv_sec = 1309059829, tv_nsec = 693237324}, st_mtim = {
> tv_sec = 1309057020, tv_nsec = 388549812}, st_ctim = {tv_sec =
> 1309057020, tv_nsec = 388549812}, __unused4 = 0, __unused5 = 0}
> result = 1075253328
> cwdfd = <value optimized out>
> cwd = 0x0
> cp = <value optimized out>
> ---Type <return> to continue, or q <return> to quit---
> #6 0x400fbaa8 in __new_nftw (path=0x400238c8 "\001", func=<value optimized
> out>, descriptors=0, flags=1073889224) at ftw.c:856
> No locals.
> #7 0x4000106c in main (argc=1, argv=0xbefff864) at filecap.c:154
> path_env = 0xbeffff2a
> "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
> path = 0x40171008 "/usr/local/sbin"
> dir = 0x40171027 "/usr/sbin"
> sbuf = {st_dev = 0, __pad1 = 36800, st_ino = 1073909688, st_mode = 0,
> st_nlink = 1073909712, st_uid = 0, st_gid = 0, st_rdev = 0,
> __pad2 = 0, st_size = 0, st_blksize = 0, st_blocks = 0, st_atim =
> {tv_sec = 0, tv_nsec = 1073909704}, st_mtim = {tv_sec = 0,
> tv_nsec = 0}, st_ctim = {tv_sec = 0, tv_nsec = 0}, __unused4 = 0,
> __unused5 = 0}
> nftw_flags = 1
> i = 1073746516
>
>
> -- System Information:
> Debian Release: wheezy/sid
> APT prefers unstable
> APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
> Architecture: armel (armv7l)
>
> Kernel: Linux 3.0.0-rc4-a101-initramfs-11146-ga699455-dirty (PREEMPT)
> Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
>
> Versions of packages libcap-ng0 depends on:
> ii libc6 2.13-7 Embedded GNU C Library: Shared
> lib
>
> libcap-ng0 recommends no packages.
>
> libcap-ng0 suggests no packages.
>
> -- no debconf information
>
>
>
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