Dear centos community, I was in the process of loading the latest 5.5 release of centos in a VMWARE ESX 4.1 host as my first virtual machine, suddenly while booting I got a panic error with the following on screen. Can someone point me in the right direction. This machine has 24 cores and I allocated 1 for Centos to use with 1024MB of memory. Any clues or workaround to solve this problem? Thank you in advance. Unable to handle kernel NULL pointer dereference at 0000000000000040 RIP: [] cpuid4_cache_lookup+0x256/0x356 PGD 0 Oops: 0000 [1] SMP last sysfs file: CPU 0 Modules linked in: Pid: 1, comm: swapper Not tainted 2.6.18-194.el5 #1 RIP: 0010:[] [] cpuid4_cache_lookup+0x256/6 RSP: 0000:ffff81010fc75d60 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000060 RCX: 00000000000006aa RDX: 0000000000000000 RSI: 0000000000000060 RDI: 0000000000000003 RBP: ffff81010f765580 R08: 0000000000000001 R09: 0000000000000040 R10: ffff81010fc75cf0 R11: 0000000000000060 R12: 0000000000000080 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003 FS: 0000000000000000(0000) GS:ffffffff803cb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000040 CR3: 0000000000201000 CR4: 00000000000006e0 Process swapper (pid: 1, threadinfo ffff81010fc74000, task ffff81010fc657a0) Stack: ffff81010fc75e00 000280000f765ec0 0000000000000000 0000000000000000 0000000040020140 00000000000000d0 ffff810140020140 0000000000000286 00000000000006a9 0000000000000000 0000000017c0003f 0000000000000000 Call Trace: [] cacheinfo_cpu_callback+0xe9/0x516 [] cacheinfo_cpu_callback+0x134/0x516 [] cache_sysfs_init+0x39/0x54 [] init+0x1f9/0x2f7 [] child_rip+0xa/0x11 [] acpi_ds_init_one_object+0x0/0x80 [] init+0x0/0x2f7 [] child_rip+0x0/0x11 Code: 8b 72 40 48 8d 4c 24 1c 48 8b 7a 20 ba c4 01 00 00 e8 5f 77 RIP [] cpuid4_cache_lookup+0x256/0x356 RSP CR2: 0000000000000040 <0>Kernel panic - not syncing: Fatal exception -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20101217/43b0b360/attachment-0004.html>