If you have an old Dell PowerEdge 1750 and want to install CentOS 6.x on it so that you can do something useful with it you will bump into kernel panic once you install it. So after some googling I’ve found this workaround to solve the kernel panic problem.
[cc lang=”bash” width=”100%”]
dmesg
[/cc]
If somewhere on that list of line you find the folowing:
[cc width=”100%”]
scb2_flash: warning – can’t reserve rom window, continuing
resource map sanity check conflict: 0xfff00000 0xffffffff 0xfff80000 0xffffffff reserved
————[ cut here ]————
WARNING: at arch/x86/mm/ioremap.c:98 __ioremap_caller+0x435/0x450() (Not tainted)
Hardware name: PowerEdge 1750
Info: mapping multiple BARs. Your kernel is fine.
Modules linked in: scb2_flash(+) ext4 jbd2 mbcache sd_mod crc_t10dif sr_mod cdrom megaraid_mbox megaraid_mm ata_generic pata_acpi pata_serverworks dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan]
Pid: 452, comm: modprobe Not tainted 2.6.32-431.5.1.el6.i686 #1
Call Trace:
[] ? warn_slowpath_common+0x81/0xc0
[] ? __ioremap_caller+0x435/0x450
[] ? __ioremap_caller+0x435/0x450
[] ? warn_slowpath_fmt+0x33/0x40
[] ? __ioremap_caller+0x435/0x450
[] ? scb2_flash_probe+0x99/0x2a0 [scb2_flash]
[] ? ioremap_nocache+0x18/0x20
[] ? scb2_flash_probe+0x99/0x2a0 [scb2_flash]
[] ? scb2_flash_probe+0x99/0x2a0 [scb2_flash]
[] ? local_pci_probe+0xb/0x10
[] ? pci_device_probe+0x61/0x80
[] ? driver_probe_device+0x87/0x290
[] ? pci_match_device+0x12/0xa0
[] ? __driver_attach+0x79/0x80
[] ? __driver_attach+0x0/0x80
[] ? bus_for_each_dev+0x52/0x80
[] ? driver_attach+0x16/0x20
[] ? __driver_attach+0x0/0x80
[] ? bus_add_driver+0x1b7/0x2b0
[] ? pci_device_remove+0x0/0x40
[] ? driver_register+0x5f/0x110
[] ? tracepoint_module_notify+0x1f/0x30
[] ? scb2_flash_init+0x0/0x14 [scb2_flash]
[] ? __pci_register_driver+0x3d/0xb0
[] ? do_one_initcall+0x2f/0x1c0
[] ? sys_init_module+0xb4/0x220
[] ? do_page_fault+0x2a/0x90
[] ? syscall_call+0x7/0xb
—[ end trace 9fd84e2ca1f666fb ]—
[/cc]
Edit /etc/modprobe.d/blacklist.conf file
[cc lang=”bash” width=”100%”]
vim /etc/modprobe.d/blacklist.conf
[/cc]
and add:
[cc lang=”bash” width=”100%”]
# Cheesy workaround to clean up Dell PowerEdge 1750 boot
# scb2_flash is not happy and causes a kernel oops and traceback
# Not sure of the consequences of not having this and its associated modules loaded, but the machine boots cleanly
# http://www.mailrepository.com/ubuntu-bugs.lists.ubuntu.com/msg/3409389/
blacklist scb2_flash
[/cc]