[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Bug#892096: marked as done (gcc-snapshot: AddressSanitizer uses glibc internal functions)

Your message dated Wed, 14 Mar 2018 09:20:17 +0100
with message-id <5dbaf862-36bf-892b-0610-1bf8ced82deb@debian.org>
and subject line Re: gcc-snapshot: AddressSanitizer uses glibc internal functions
has caused the Debian Bug report #892096,
regarding gcc-snapshot: AddressSanitizer uses glibc internal functions
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 owner@bugs.debian.org
immediately.)


-- 
892096: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892096
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: gcc-snapshot
Version: 20180216-1
Severity: important

On a program that does nothing, the AddressSanitizer segfaults with
the 32-bit ABI. This is a regression.

I have the following gcc-snapshot script:

#!/bin/sh
LD_LIBRARY_PATH=/usr/lib/gcc-snapshot/lib:$LD_LIBRARY_PATH
PATH=/usr/lib/gcc-snapshot/bin:$PATH
rpath=""
OLD_IFS="$IFS"
IFS=:
for i in $LD_RUN_PATH
do
  rpath="$rpath -Wl,-rpath -Wl,$i"
done
IFS="$OLD_IFS"
exec gcc -Wl,-rpath -Wl,/usr/lib/gcc-snapshot/lib \
         -Wl,-rpath -Wl,/usr/lib/gcc-snapshot/lib32 \
         -Wl,-rpath -Wl,/usr/lib/gcc-snapshot/libx32 $rpath "$@"

cventin:~> cat tst.c
int main (void)
{
  return 0;
}
cventin:~> gcc-snapshot -m32 -fsanitize=address tst.c -o tst
cventin:~> ./tst
AddressSanitizer:DEADLYSIGNAL
=================================================================
==25032==ERROR: AddressSanitizer: SEGV on unknown address 0xf7fa7e70 (pc 0xf7fa7e84 bp 0xffbf40ac sp 0xffbf406c T16777215)
==25032==The signal is caused by a WRITE memory access.
    #0 0xf7fa7e83 in _dl_get_tls_static_info (/lib/ld-linux.so.2+0x11e83)
    #1 0xf7ac147d  (/usr/lib/gcc-snapshot/lib32/libasan.so.5+0x10e47d)
    #2 0xf7aafd27  (/usr/lib/gcc-snapshot/lib32/libasan.so.5+0xfcd27)
    #3 0xf7fa591a  (/lib/ld-linux.so.2+0xf91a)
    #4 0xf7f96cb9  (/lib/ld-linux.so.2+0xcb9)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/lib/ld-linux.so.2+0x11e83) in _dl_get_tls_static_info
==25032==ABORTING

-- System Information:
Debian Release: buster/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.15.0-1-amd64 (SMP w/12 CPU cores)
Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=POSIX (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gcc-snapshot depends on:
ii  binutils        2.30-5
ii  lib32z1         1:1.2.8.dfsg-5
ii  libc6           2.27-1
ii  libc6-dev       2.27-1
ii  libc6-dev-i386  2.27-1
ii  libc6-dev-x32   2.27-1
ii  libc6-i386      2.27-1
ii  libc6-x32       2.27-1
ii  libgc1c2        1:7.4.2-8.1
ii  libgmp10        2:6.1.2+dfsg-2
ii  libisl15        0.18-1
ii  libmpc3         1.1.0-1
ii  libmpfr6        4.0.1-1
ii  python          2.7.14-4
ii  zlib1g          1:1.2.8.dfsg-5

gcc-snapshot recommends no packages.

Versions of packages gcc-snapshot suggests:
ii  binutils [binutils-gold]  2.30-5

-- no debconf information

--- End Message ---
--- Begin Message --- 
now built using glibc-2.27.

--- End Message ---
Reply to: