Description of problem: While trying to boot the 2.6.18-68.el5 kernel on dell-pe700-01.rhts.boston.redhat.com The system panics BUG: unable to handle kernel NULL pointer dereference at virtual address 00000004 Version-Release number of selected component (if applicable): 2.6.18-68.el5 How reproducible: Unknown Steps to Reproduce: 1. Install RHEL5.U1 2. Install the 2.6.18-68.el5 kernel 3. Reboot with the 2.6.18-68.el5 kernel Actual results: Setting up Logical Volume Management: BUG: unable to handle kernel NULL pointer dereference at virtual address 00000004 printing eip: *pde = 00000000 Oops: 0000 [#1] SMP last sysfs file: /block/ram0/dev Modules linked in: dm_mirror dm_multipath dm_mod video sbs backlight i2c_ec button battery asus_acpi ac lp joydev i2c_i801 i82875p_edac floppy i2c_core e1000 parport_pc ide_cd parport edac_mc sg serio_raw i6300esb cdrom pcspkr ata_piix libata aacraid sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd CPU: 0 EIP: 0060:[<c04721a8>] Not tainted VLI EFLAGS: 00010292 (2.6.18-68.el5 #1) EIP is at create_empty_buffers+0x13/0x7d eax: 00000000 ebx: c16e39a0 ecx: 00000001 edx: 00008000 esi: 00000000 edi: 00000000 ebp: 00000010 esp: f7629d18 ds: 007b es: 007b ss: 0068 Process lvm.static (pid: 1352, ti=f7629000 task=f7f88aa0 task.ti=f7629000) Stack: c16e39a0 c16e39a0 c2f16618 c0474234 f8936628 c0477629 00000000 000201d0 c2f16570 00000001 00000001 0000000f 00000001 f88bc044 00008000 000201d0 c067be00 c16e39a0 00000000 0ffffffa c16e39a0 c2f16618 00000000 00000000 Call Trace: [<c0474234>] block_read_full_page+0x4b/0x2cd [<f8936628>] ide_cdrom_check_media_change_real+0x1a/0x34 [ide_cd] [<c0477629>] blkdev_get_block+0x0/0x43 [<f88bc044>] cdrom_open+0x870/0x8b3 [cdrom] [<c04550ee>] add_to_page_cache+0x60/0x70 [<c045aa48>] __do_page_cache_readahead+0x16d/0x1c6 [<c047869b>] sys_fstat64+0x1e/0x23 [<c045aae7>] blockable_page_cache_readahead+0x46/0x99 [<c045ac7a>] page_cache_readahead+0xb3/0x178 [<c04555ac>] do_generic_mapping_read+0x137/0x468 [<c045612b>] __generic_file_aio_read+0x166/0x198 [<c0454d33>] file_read_actor+0x0/0xd1 [<c04571b3>] generic_file_read+0x0/0xab [<c045724a>] generic_file_read+0x97/0xab [<c043628d>] autoremove_wake_function+0x0/0x2d [<c0470c50>] vfs_read+0x9f/0x141 [<c047109e>] sys_read+0x3c/0x63 [<c0404eff>] syscall_call+0x7/0xb ======================= Code: 74 0a e8 18 ff ff ff e9 62 ff ff ff 31 f6 83 c4 0c 89 f0 5b 5e 5f 5d c3 57 89 cf 56 b9 01 00 00 00 53 89 c3 e8 35 ff ff ff 89 c6 <8b> 50 04 09 38 85 d2 74 04 89 d0 eb f3 89 70 04 8b 43 10 83 c0 EIP: [<c04721a8>] create_empty_buffers+0x13/0x7d SS:ESP 0068:f7629d18 <0>Kernel panic - not syncing: Fatal exception Expected results: This should boot normally Additional info:
This seems to be problem in cd-rom/ide-cd driver (well, triggered by lvm device scan) and not any lvm or device-mapper code.
Isn't this duplicate of bug 354461 ?
Milan, Yes you are correct. It is a duplicate of 354461 *** This bug has been marked as a duplicate of 354461 ***