Description of problem: from time to time our server is stuck for about an hour Version-Release number of selected component (if applicable): fedora core 5 kernel 2.6.17-1.2174_FC5smp How reproducible: often Steps to Reproduce: 1. launch a "big" program like matlab 2. wait a bit 3. the machine is stuck for about an hour and the date of the machine has lost one hour. afer about one hour it came back to life Actual results: Expected results: Additional info: here is the message on console and in /var/log/messages Sep 8 22:15:59 helios kernel: BUG: write-lock lockup on CPU#6, MATLAB/23423, c073da00 (Not tainted) Sep 8 22:15:59 helios kernel: <c04ea9f6> _raw_write_lock+0xe2/0x100 <c0428135> do_exit+0x421/0x792 Sep 8 22:15:59 helios kernel: <c042e343> __dequeue_signal+0x14a/0x155 <c0428513> sys_exit_group+0x0/0xd Sep 8 22:15:59 helios kernel: <c042fc5b> get_signal_to_deliver+0x3a9/0x3d1 <c0403564> do_notify_resume+0x75/0x5fa Sep 8 22:15:59 helios kernel: <c041f2e7> default_wake_function+0x0/0xc <c043b44b> sys_futex+0xc4/0xd7 Sep 8 22:15:59 helios kernel: <c0403ece> work_notifysig+0x13/0x19
A new kernel update has been released (Version: 2.6.18-1.2200.fc5) based upon a new upstream kernel release. Please retest against this new kernel, as a large number of patches go into each upstream release, possibly including changes that may address this problem. This bug has been placed in NEEDINFO state. Due to the large volume of inactive bugs in bugzilla, if this bug is still in this state in two weeks time, it will be closed. Should this bug still be relevant after this period, the reporter can reopen the bug at any time. Any other users on the Cc: list of this bug can request that the bug be reopened by adding a comment to the bug. In the last few updates, some users upgrading from FC4->FC5 have reported that installing a kernel update has left their systems unbootable. If you have been affected by this problem please check you only have one version of device-mapper & lvm2 installed. See bug 207474 for further details. If this bug is a problem preventing you from installing the release this version is filed against, please see bug 169613. If this bug has been fixed, but you are now experiencing a different problem, please file a separate bug for the new problem. Thank you.
the problem is solved thanks