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Red Hat Bugzilla – Attachment 304681 Details for
Bug 241362
kdump: read on /proc/kcore returns EPERM always
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[patch]
patch to enable kcore on x86_64
kcore.patch (text/plain), 692 bytes, created by
Neil Horman
on 2008-05-06 20:14:20 UTC
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Description:
patch to enable kcore on x86_64
Filename:
MIME Type:
Creator:
Neil Horman
Created:
2008-05-06 20:14:20 UTC
Size:
692 bytes
patch
obsolete
>diff -up linux-2.6.24.noarch/arch/x86/kernel/setup_64.c.orig linux-2.6.24.noarch/arch/x86/kernel/setup_64.c >--- linux-2.6.24.noarch/arch/x86/kernel/setup_64.c.orig 2008-05-06 16:11:59.000000000 -0400 >+++ linux-2.6.24.noarch/arch/x86/kernel/setup_64.c 2008-05-06 16:12:37.000000000 -0400 >@@ -202,12 +202,15 @@ static inline void copy_edd(void) > #endif > > #ifdef CONFIG_KEXEC >+extern int allow_kcore_access; > static void __init reserve_crashkernel(void) > { > unsigned long long free_mem; > unsigned long long crash_size, crash_base; > int ret; > >+ allow_kcore_access = 1; /*enable ability to read /proc/kcore*/ >+ > free_mem = > ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT; >
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