Is there a bug tracker somewhere or should we just post them to this list? -------------------------------------------------------------- This is on a dual-cpu box (FC2) with hyperthreading enabled (eg. for a total of 4 logical CPUs). If I issue the following commands where I type each command as soon as the prior command completes I get a segfault loading the dlm. The code is from CVS/latest. [root@lx4 cluster_orig]# ccsd [root@lx4 cluster_orig]# cman_tool join [root@lx4 cluster_orig]# modprobe dlm Segmentation fault [root@lx4 cluster_orig]# modprobe dlm [root@lx4 cluster_orig]# dmesg <snip> CMAN: Waiting to join or form a Linux-cluster CMAN <CVS> (built Aug 2 2004 15:04:09) installed kmem_cache_create: duplicate cache cluster_sock ------------[ cut here ]------------ kernel BUG at mm/slab.c:1392! invalid operand: 0000 [#1] SMP Modules linked in: cman parport_pc lp parport autofs4 nfs lockd sunrpc e1000 3c59x floppy sg microcode dm_mod uhci_hcd button battery asus_acpi ac ipv6 ext3 jbd aic7xxx sd_mod scsi_mod CPU: 0 EIP: 0060:[<c01474f6>] Not tainted EFLAGS: 00010202 (2.6.7-clu-smp) EIP is at kmem_cache_create+0x4c6/0x660 eax: 00000030 ebx: c22f4770 ecx: c0487c98 edx: 00004ce1 esi: c033a366 edi: f8aa662d ebp: f51d7b80 esp: f3fb0f5c ds: 007b es: 007b ss: 0068 Process modprobe (pid: 5476, threadinfo=f3fb0000 task=f43ce230) Stack: c031b3c8 f8aa6620 f51d7c38 0000000a c0000000 ffffff80 00000080 f8aa6620 00000080 c0356fe0 f8aae200 c0356fc4 c0356fc4 f88a804e 00002000 00000000 00000000 f8aa6605 c013a5c7 f6b7daa0 00000000 40018008 0807a1a0 00ccaffc Call Trace: [<f88a804e>] cluster_init+0x4e/0x3f9 [cman] [<c013a5c7>] sys_init_module+0x107/0x220 [<c0106e3d>] sysenter_past_esp+0x52/0x71 Code: 0f 0b 70 05 2d ad 31 c0 8b 0b e9 5b ff ff ff 8b 87 b0 00 00 DLM <CVS> (built Aug 2 2004 15:04:29) installed CMAN: sending membership request CMAN: got node lx3 CMAN: quorum regained, resuming activity [root@lx4 cluster_orig]# The cpuinfo for the 4 cpu's is pretty much the same. Here's one of them: processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) XEON(TM) CPU 1.80GHz stepping : 4 cpu MHz : 1779.842 cache size : 512 KB physical id : 0 siblings : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm bogomips : 3514.36