Messages in this thread | | | Date | Tue, 16 Oct 2007 18:28:57 +0200 | From | Bernhard Walle <> | Subject | [patch 0/3] Protect crashkernel against BSS overlap |
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I observed the problem that even when you choose the default 16M as crashkernel base address and the kernel is very big, the reserved area may overlap with the kernel BSS. Currently, this is not checked at runtime, so the kernel just crashes when you load the panic kernel in the sys_kexec call.
This three patches check this at runtime. The patches are against current git, but with the patches
extended-crashkernel-command-line.patch extended-crashkernel-command-line-update.patch extended-crashkernel-command-line-comment-fix.patch extended-crashkernel-command-line-improve-error-handling-in-parse_crashkernel_mem.patch use-extended-crashkernel-command-line-on-i386.patch use-extended-crashkernel-command-line-on-i386-update.patch use-extended-crashkernel-command-line-on-x86_64.patch use-extended-crashkernel-command-line-on-x86_64-update.patch use-extended-crashkernel-command-line-on-ia64.patch use-extended-crashkernel-command-line-on-ia64-fix.patch use-extended-crashkernel-command-line-on-ia64-update.patch use-extended-crashkernel-command-line-on-ppc64.patch use-extended-crashkernel-command-line-on-ppc64-update.patch use-extended-crashkernel-command-line-on-sh.patch use-extended-crashkernel-command-line-on-sh-update.patch
from -mm tree applied since they are marked to be merged in 2.6.24.
I know that the implementation of both patches is only x86 (i386 and x86-64), but if you agree that it's the way to go, I'll modify the patch for all architectures.
Signed-off-by: Bernhard Walle <bwalle@suse.de>
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