Using the Gentoo 2.6.35 kernel I face freezes of some milliseconds when transfering data between HD and an USB drive (also hard disk), followed by some obscure console output and entries about a bug with soft lockups in the kernel. Reproducible: Always Steps to Reproduce: 1. Boot with 2.6.35 (to console, no X) 2. Connect and mount USB drive 3. Start data transfer between HD and USB drive (rsync actually) Actual Results: Data transfer is interrupted by freezes and error messages on console Expected Results: Faste and reliable data transfer $ emerge --info Portage 2.1.8.3 (default/linux/amd64/10.0/desktop/kde, gcc-4.4.3, glibc-2.11.2-r0, 2.6.35-gentoo x86_64) ================================================================= System uname: Linux-2.6.35-gentoo-x86_64-Intel-R-_Core-TM-_i7_CPU_920_@_2.67GHz-with-gentoo-1.12.13 Timestamp of tree: Sat, 07 Aug 2010 10:15:03 +0000 ccache version 2.4 [enabled] app-shells/bash: 4.0_p37 dev-java/java-config: 2.1.11 dev-lang/python: 2.6.5-r3 dev-util/ccache: 2.4-r7 dev-util/cmake: 2.8.1-r2 sys-apps/baselayout: 1.12.13 sys-apps/sandbox: 1.6-r2 sys-devel/autoconf: 2.13, 2.65 sys-devel/automake: 1.8.5-r4, 1.9.6-r3, 1.10.3, 1.11.1 sys-devel/binutils: 2.20.1-r1 sys-devel/gcc: 4.4.3-r2 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6b virtual/os-headers: 2.6.30-r1 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -mtune=native -Os -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/X11/xkb /usr/share/config /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/sandbox.d /etc/splash /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=native -mtune=native -Os -pipe -fno-default-inline" DISTDIR="/mnt/portage/distfiles/floh" FEATURES="assume-digests ccache distlocks fixpackages news parallel-fetch protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch userpriv" GENTOO_MIRRORS="http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/ http://sunsite.cnlab-switch.ch/mirror/gentoo/ http://ftp.heanet.ie/pub/gentoo/" LANG="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="en de en_GB en_US" PKGDIR="/mnt/portage/packages/core-i7" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp/portage" PORTDIR="/mnt/portage/tree/central" PORTDIR_OVERLAY="/mnt/portage/local" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi alsa amd64 bash-completion berkdb bmp branding bzip2 cairo caps cdr cli consolekit cracklib crypt cups curl cxx dbus dga dri dts dvd dvdr emboss encode exif fam firefox flac fortran gdbm gif gpm gtk hal handbook iconv idn jpeg jpeg2k kde lcms libnotify mad maildir mikmod mmap mmx mng modules mp3 mp4 mpeg mudflap multilib mysql ncurses nls nptl nptlonly odbc ogg opengl openmp openssh pam pango pch pcre pdf perl png policykit ppds pppd python qt qt3support qt4 readline reflection samba sdl semantic-desktop session spell spl sse sse2 sse4_1 sse4_2 ssl ssse3 startup-notification svg sysfs syslog tcpd threads tiff truetype unicode usb vim-syntax vorbis x264 xattr xcb xml xorg xpm xulrunner xv xvid zlib" ALSA_CARDS="hda_intel" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en de en_GB en_US" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="fbdev fglrx radeon v4l vesa" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LC_ALL, MAKEOPTS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Created attachment 241777 [details] messages-2.6.35.log Kernel log of that session, error reports start at 09:04. Machine was booted for a backup operation. Backup is normally finished after ~40 mins.
Did you try gentoo-sources-2.6.35-r1 already? I had a similar problem and I see no more lockups here.
I intented to, but had no time and I will be offline the next 3 weeks anyway. But good to hear, it's the first thing I try when coming back. 2.6.34 has also nasty problems with my machine.
Please reopen if still an issue with later kernels
