Package: kernel-2.6.8-2-686-smp Version: kernel-image-2.6.8-2-686-smp Severity: normal
libMicro is benchmarking tool that was originally used for identifying performance bottlenecks in Solaris 10 kernel and system library implementation. When running a series of tests for flock syscall kernel panics happen with ~30% probability. How to reproduce: - Libmicro version 0.3.0 source tarball was taken from http://www.opensolaris.org/os/community/performance/libmicro/ - it was compiled simply by running 'make' with no special options - then the test suit was launched by 'bench' script Kernel panics were encountered on two different machines: Scenario 1: Hardware configuration: Processors: 2 x AMD Opteron 246 (2Ghz) Motherboard: Iwill DK8S2 (AMD-8131/8111) Memory: 2 x 512Mb DDR-400 HDD: Seagate ST380011A (80Gb) Filesystem: reiserfs 3.6 Distribution: Debian sarge 3.1r2 kernel: kernel-image-2.6.8-2-686-smp 2.6.8-16sarge1 Problem descrition: when running tests c_flock_ multiple cascade_flock processes hang waiting for event that never happens. Runinng "killall cascade_flock" brings the following: Printing eip: c0f06f20 *pde=00000000 [<c01a62562>] work_notifysig +0x13/0x15 Unable to handle kernel NULL pointer dereference at virtual address 00000001 Note: After replacing kernel by linux-image-2.6.16-2-686-smp (2.6.16-13bpo1) from backports.org this problem never happened. Scenario 2: Hardware configuration: Processor: Athlon 64 x2 3800+ DDR-400, Motherboard: Asus K8Ne Memory: 2 x 1Gb DDR-400 HDD: Western Digital WD1600 Filesystem: ext3, reiserfs 3.6 Distribution: Debian sarge 3.1r2 kernel: kernel-image-2.6.8-2-686-smp 2.6.8-16sarge1 Problem description: when running test c_flock_10 got "Kernel panic: attempting to free local with active block list" Of course situation with running benchmarking tool is much different from common OS usage pattern. So this report was sent just in hope that this information may be somewhat useful if the situation described has something to do with kernel stability in general. If it's not then please just ignore it. Sincerelly, Ivan -- System Information: Debian Release: 3.1 Architecture: i386 (i686) Kernel: Linux 2.6.8-2-686-smp Locale: LANG=ru_RU.KOI8-R, LC_CTYPE=ru_RU.KOI8-R (charmap=KOI8-R) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]