I was unable to mount cds on my gentoo since a few weeks, dvd was working. On command line, mount ends with a segmentation fault The issue was to downgrade sys-apps/util-linux (2.16.2) Before finding that issue, I've tried several kernel versions, old and new PATA support, other drives, because I have this error message (even now with working state) : Buffer I/O error on device sr1, logical block 347872 sr 4:0:1:0: [sr1] Result: hostbyte=0x00 driverbyte=0x08 sr 4:0:1:0: [sr1] Sense Key : 0x5 [current] Info fld=0x54ee0, ILI sr 4:0:1:0: [sr1] ASC=0x64 ASCQ=0x0 sr 4:0:1:0: [sr1] CDB: cdb[0]=0x28: 28 00 00 05 4e e0 00 00 01 00 end_request: I/O error, dev sr1, sector 1391488 Here is the make.conf, I have tried to build without the LDFLAGS : ACCEPT_KEYWORDS="~amd64" CFLAGS="-march=native -mtune=native -O2 -pipe -fomit-frame-pointer" #CFLAGS="-march=nocona -mtune=nocona -O2 -pipe -fomit-frame-pointer" #CFLAGS="-Os -march=pentium4 -mtune=pentium4 -fomit-frame-pointer -pipe" CHOST="x86_64-pc-linux-gnu" CXXFLAGS="${CFLAGS}" #LDFLAGS="-Wl,-O1" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--sort-common -Wl,--hash-style=both" MAKEOPTS="-j3 -s" #MAKEOPTS="-j1" #WANT_DISTCC="true" WANT_MP="true" #FEATURES="distcc parallel-fetch" FEATURES="parallel-fetch prelink" #FETCHCOMMAND="/usr/bin/wget -t 2 \${URI} -P \${DISTDIR}" USE="-apache2 -apm -ipv6 -java -aspell -esd -eds -arts -debug -motif -fortran -qt -qt3 -qt4 -kde -spell -sdl -xine -berkdb -xmms -foomaticdb -oss nvidia nautilus acl amr acpi cdda dvd dvdread encode exif gtk gtk2$ gnome gphoto2 gnome-keyring alsa cdr cairo bzip2 flac fuse gstreamer gl$ svg tiff mmx2 mp3 mp4 network sse hal hashstyle keyring dbus sse2 matro$ real lcms libnotify quicktime mad mozsvg unicode mime mpeg nfs nptl npt$ truetype nvidia threads a52 mplayer ogg pop subtitles startup-notificat$ userlocales usb dvdr xvid x264 xcomposite imagemagick chardet opengl vorbis wavpack wma ffmpeg png X xulrunner xcb xv xml"
Thank you for report. Please, show us output of mount with segfault. Also, please, read the following http://www.gentoo.org/proj/en/qa/backtraces.xml and try to get backtrace. BTW, next time you post configuration files, please, strip comments (egrep -v '(^#|$^)' /etc/make.conf can do the job).
Ah, and looks like this is duplicate. Please, reopen if you see different problem. *** This bug has been marked as a duplicate of bug 301787 ***
