Description of problem: umount and umount are dumping core $ file /core* /core.21243: ELF 32-bit LSB core file Intel 80386, version 1 (SYSV), SVR4-style, from 'umount.nfs' /core.2713: ELF 32-bit LSB core file Intel 80386, version 1 (SYSV), SVR4-style, from 'mount.nfs' /core.9257: ELF 32-bit LSB core file Intel 80386, version 1 (SYSV), SVR4-style, from 'mount.nfs' -rw------- 1 root root 110592 nov 14 21:57 /core.21243 -rw------- 1 root root 114688 nov 21 14:48 /core.2713 -rw------- 1 root root 114688 nov 9 10:57 /core.9257 Version-Release number of selected component (if applicable): $ rpm -q nfs-utils nfs-utils-1.0.10-3.fc6 $ uname -r 2.6.18-1.2849.fc6 Doing lots of mount/umounts, the server is RHEL 4 u4 x86_64 with two nics on the same subnet. I also saw this on RHEL 5 Beta 1.
Created attachment 141955 [details] example core file
'm not sure why but all I can get from the core you posted is: Core was generated by `/sbin/mount.nfs susanne:/export-c/cluster/bin /cluster/bin -s -o ro,nosuid,soft'. Program terminated with signal 11, Segmentation fault. #0 0x00bfd402 in ?? () So would it be possible for you to yum install nfs-utils-debuginfo and then either generate the core and use 'bt' command in gdb to get a stack trace: gdb /sbin/mount.nfs /tmp/core.<pid> (gdb) bt OR run the mount.nfs command from gdb and when it crashes, then do the use the 'bt' command to get the stack trace: gdb /sbin/mount.nfs (gdb) run susanne:/export-c/cluster/bin /cluster/bin -s -o ro,nosuid,soft' (gdb) bt
(In reply to comment #2) > 'm not sure why but all I can get from the core you posted is: > > Core was generated by `/sbin/mount.nfs susanne:/export-c/cluster/bin > /cluster/bin -s -o ro,nosuid,soft'. > Program terminated with signal 11, Segmentation fault. > #0 0x00bfd402 in ?? () > > So would it be possible for you to yum install nfs-utils-debuginfo and then > either generate the core and use 'bt' command in gdb to get a stack trace: > gdb /sbin/mount.nfs /tmp/core.<pid> > (gdb) bt I am not able get any more useful information. Several updates to nfs-utils has been posted, you can close the bug and I will open a new one if I see again, however both FC6 and RHEL 5 B2 behave just fine with regards to nfs and autofs at the moment.