[Bug 575749] [NEW] umount buffer overflow

[Adam Porter]

Public bug reported:

Binary package hint: util-linux

I was trying to burn a DVD in K3b.  I put in a disk, which happened to
already have an older Ubuntu ISO burned.  I started the burn process,
but it failed to unmount the disc.  I tried unmounting it with the
Plasma device widget and tried burning again, but it failed again.  I
tried "Release" in Dolphin, but that didn't do anything.  I went to a
console and checked mount, and it was still mounted.  I ran umount and
got this:

$ umount /dev/sr0
*** buffer overflow detected ***: /sbin/umount.hal terminated
======= Backtrace: =========
/lib/libc.so.6(__fortify_fail+0x37)[0x7f7c639591a7]
/lib/libc.so.6(+0xfe060)[0x7f7c63958060]
/lib/libc.so.6(+0xfe6bb)[0x7f7c639586bb]
/sbin/umount.hal[0x400daf]
/lib/libc.so.6(__libc_start_main+0xfd)[0x7f7c63878c4d]
/sbin/umount.hal[0x400c19]
======= Memory map: ========
00400000-00402000 r-xp 00000000 08:06 793536                             /usr/sbin/umount.hal
00601000-00602000 r--p 00001000 08:06 793536                             /usr/sbin/umount.hal
00602000-00603000 rw-p 00002000 08:06 793536                             /usr/sbin/umount.hal
01870000-01891000 rw-p 00000000 00:00 0                                  [heap]
7f7c6321e000-7f7c63234000 r-xp 00000000 08:06 5767247                    /lib/libgcc_s.so.1
7f7c63234000-7f7c63433000 ---p 00016000 08:06 5767247                    /lib/libgcc_s.so.1
7f7c63433000-7f7c63434000 r--p 00015000 08:06 5767247                    /lib/libgcc_s.so.1
7f7c63434000-7f7c63435000 rw-p 00016000 08:06 5767247                    /lib/libgcc_s.so.1
7f7c63435000-7f7c6343c000 r-xp 00000000 08:06 5767327                    /lib/librt-2.11.1.so
7f7c6343c000-7f7c6363b000 ---p 00007000 08:06 5767327                    /lib/librt-2.11.1.so
7f7c6363b000-7f7c6363c000 r--p 00006000 08:06 5767327                    /lib/librt-2.11.1.so
7f7c6363c000-7f7c6363d000 rw-p 00007000 08:06 5767327                    /lib/librt-2.11.1.so
7f7c6363d000-7f7c63655000 r-xp 00000000 08:06 5767321                    /lib/libpthread-2.11.1.so
7f7c63655000-7f7c63854000 ---p 00018000 08:06 5767321                    /lib/libpthread-2.11.1.so
7f7c63854000-7f7c63855000 r--p 00017000 08:06 5767321                    /lib/libpthread-2.11.1.so
7f7c63855000-7f7c63856000 rw-p 00018000 08:06 5767321                    /lib/libpthread-2.11.1.so
7f7c63856000-7f7c6385a000 rw-p 00000000 00:00 0 
7f7c6385a000-7f7c639d2000 r-xp 00000000 08:06 5767213                    /lib/libc-2.11.1.so
7f7c639d2000-7f7c63bd2000 ---p 00178000 08:06 5767213                    /lib/libc-2.11.1.so
7f7c63bd2000-7f7c63bd6000 r--p 00178000 08:06 5767213                    /lib/libc-2.11.1.so
7f7c63bd6000-7f7c63bd7000 rw-p 0017c000 08:06 5767213                    /lib/libc-2.11.1.so
7f7c63bd7000-7f7c63bdc000 rw-p 00000000 00:00 0 
7f7c63bdc000-7f7c63be6000 r-xp 00000000 08:06 788400                     /usr/lib/libhal-storage.so.1.0.0
7f7c63be6000-7f7c63de5000 ---p 0000a000 08:06 788400                     /usr/lib/libhal-storage.so.1.0.0
7f7c63de5000-7f7c63de6000 r--p 00009000 08:06 788400                     /usr/lib/libhal-storage.so.1.0.0
7f7c63de6000-7f7c63de7000 rw-p 0000a000 08:06 788400                     /usr/lib/libhal-storage.so.1.0.0
7f7c63de7000-7f7c63df7000 r-xp 00000000 08:06 788402                     /usr/lib/libhal.so.1.0.0
7f7c63df7000-7f7c63ff6000 ---p 00010000 08:06 788402                     /usr/lib/libhal.so.1.0.0
7f7c63ff6000-7f7c63ff7000 r--p 0000f000 08:06 788402                     /usr/lib/libhal.so.1.0.0
7f7c63ff7000-7f7c63ff8000 rw-p 00010000 08:06 788402                     /usr/lib/libhal.so.1.0.0
7f7c63ff8000-7f7c64035000 r-xp 00000000 08:06 5767225                    /lib/libdbus-1.so.3.4.0
7f7c64035000-7f7c64235000 ---p 0003d000 08:06 5767225                    /lib/libdbus-1.so.3.4.0
7f7c64235000-7f7c64236000 r--p 0003d000 08:06 5767225                    /lib/libdbus-1.so.3.4.0
7f7c64236000-7f7c64237000 rw-p 0003e000 08:06 5767225                    /lib/libdbus-1.so.3.4.0
7f7c64237000-7f7c64257000 r-xp 00000000 08:06 5767189                    /lib/ld-2.11.1.so
7f7c64434000-7f7c64439000 rw-p 00000000 00:00 0 
7f7c64454000-7f7c64456000 rw-p 00000000 00:00 0 
7f7c64456000-7f7c64457000 r--p 0001f000 08:06 5767189                    /lib/ld-2.11.1.so
7f7c64457000-7f7c64458000 rw-p 00020000 08:06 5767189                    /lib/ld-2.11.1.so
7f7c64458000-7f7c64459000 rw-p 00000000 00:00 0 
7fff6fdd2000-7fff6fde7000 rw-p 00000000 00:00 0                          [stack]
7fff6fdff000-7fff6fe00000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: mount 2.17.2-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Wed May  5 07:30:52 2010
EcryptfsInUse: Yes
InstallationMedia: Kubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427)
ProcEnviron:
 LANGUAGE=
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: util-linux

** Affects: util-linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug lucid

-- 
umount buffer overflow
https://bugs.launchpad.net/bugs/575749
You received this bug notification because you are a member of Kernel
Bugs, which is subscribed to util-linux in ubuntu.