Hi, I've posted this earlier to the lkml, since I was not able to subscribe to linu-lvm list. Thanks to AJ Lewis for manually subscribing me. Here's the oops: [root@smtp tmp]# ksymoops -L -O -K -m /boot/System.map-2.4.23-smp-dmapper-pom-2 <stack ksymoops 2.4.4 on i686 2.4.24-smp-dmapper-pom-1. Options used -V (default) -K (specified) -L (specified) -O (specified) -m /boot/System.map-2.4.23-smp-dmapper-pom-2 (specified) Unable to handle kernel NULL pointer dereference at virtual address 00000004 f883bf9b *pde = 00000000 Oops: 0002 CPU: 3 EIP: 0010:[<f883bf9b>] Tainted: P Using defaults from ksymoops -t elf32-i386 -a i386 EFLAGS: 00010206 eax: 00000000 ebx: f8a803a8 ecx: f8d12f38 edx: 00000000 esi: 03353080 edi: 00000814 ebp: 00000009 esp: f7e9dd50 ds: 0018 es: 0018 ss: 0018 Process kupdated (pid: 9, stackpage=f7e9d000) Stack: 00000020 00000000 c232eb70 c232ea00 02b42f20 00000001 f8838921 f7e9ddb2 f7e9dd98 03350180 c232ea00 f7e6d800 c03a7e0c c03a7e00 f799f600 f7974000 03350180 00002b40 033530a0 033530a0 c0121006 00000001 c03a7ef0 c03a7e2c Call Trace: [<f8838921>] [<c0121006>] [<c0277f3f>] [<c01b17a2>] [<c011d0eb>] [<f8838a1f>] [<c01c4e0a>] [<c01c4e73>] [<c013d554>] [<c013d5fa>] [<c0140e17>] [<c0141161>] [<c0108aa6>] [<c0141010>] [<c0105000>] [<c0107146>] [<c0141010>] Code: 89 42 04 89 10 c7 01 00 00 00 00 c7 41 04 00 00 00 00 8b 03 >>EIP; f883bf9b <END_OF_CODE+38456427/????> <===== Trace; f8838921 <END_OF_CODE+38452dad/????> Trace; c0121006 <update_wall_time+16/50> Trace; c0277f3f <net_rx_action+9f/160> Trace; c01b17a2 <add_interrupt_randomness+22/30> Trace; c011d0eb <do_softirq+6b/d0> Trace; f8838a1f <END_OF_CODE+38452eab/????> Trace; c01c4e0a <generic_make_request+10a/120> Trace; c01c4e73 <submit_bh+53/e0> Trace; c013d554 <write_locked_buffers+24/30> Trace; c013d5fa <write_some_buffers+9a/f0> Trace; c0140e17 <sync_old_buffers+87/d0> Trace; c0141161 <kupdate+151/190> Trace; c0108aa6 <ret_from_fork+6/20> Trace; c0141010 <kupdate+0/190> Trace; c0105000 <_stext+0/0> Trace; c0107146 <arch_kernel_thread+26/30> Trace; c0141010 <kupdate+0/190> Code; f883bf9b <END_OF_CODE+38456427/????> 00000000 <_EIP>: Code; f883bf9b <END_OF_CODE+38456427/????> <===== 0: 89 42 04 mov %eax,0x4(%edx) <===== Code; f883bf9e <END_OF_CODE+3845642a/????> 3: 89 10 mov %edx,(%eax) Code; f883bfa0 <END_OF_CODE+3845642c/????> 5: c7 01 00 00 00 00 movl $0x0,(%ecx) Code; f883bfa6 <END_OF_CODE+38456432/????> b: c7 41 04 00 00 00 00 movl $0x0,0x4(%ecx) Code; f883bfad <END_OF_CODE+38456439/????> 12: 8b 03 mov (%ebx),%eax The kernel is patched with: :pserver:cvs@tech.sistina.com:/data/cvs/device-mapper/patches/linux-2.4.22-VFS-lock.patch v1.1 :pserver:cvs@tech.sistina.com:/data/cvs/device-mapper/patches/linux-2.4.22-devmapper-ioctl.patch v1.1 I suppose the VFS-lock patch may be the root of the problems. There are several patches from patch-o-matic-20030912 from netfilter.org applied to the tree but I think they are not related. I could provide the kernel config, info about the hardware, etc, if needed. Regards, Delian Krustev _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/