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openSUSE:Leap:42.2:Update
kdumpid
kdumpid-x86_64-fix-NULL-arch-segv.patch
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File kdumpid-x86_64-fix-NULL-arch-segv.patch of Package kdumpid
Date: Mon Nov 3 21:48:25 CET 2014 From: Petr Tesarik <ptesarik@suse.cz> Subject: Fix SEGV when checking x86_64 and arch is unknown Patch-mainline: not yet The probe for x86_64 avoids checking the architecture if it is known already. However, this check uses strcmp(), which does not work with NULL pointers, but a NULL pointer is used to specify unknown architecture. Signed-off-by: Petr Tesarik <ptesarik@suse.cz> --- x86.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/x86.c +++ b/x86.c @@ -258,7 +258,8 @@ looks_like_kcode_x86(struct dump_desc *d /* Try i386 code first */ info.mach = bfd_mach_i386_i386; disassemble_init_for_target(&info); - if (strcmp(dd->arch, "x86_64") && disas_at(dd, &info, 0) > 0) { + if ((!dd->arch || strcmp(dd->arch, "x86_64")) && + disas_at(dd, &info, 0) > 0) { free(priv); return 1; } @@ -267,7 +268,8 @@ looks_like_kcode_x86(struct dump_desc *d memset(priv, 0, sizeof(struct disas_priv) + dd->page_size / 8); info.mach = bfd_mach_x86_64; disassemble_init_for_target(&info); - if (strcmp(dd->arch, "i386") && disas_at(dd, &info, 0) > 0) { + if ((!dd->arch || strcmp(dd->arch, "i386")) && + disas_at(dd, &info, 0) > 0) { free(priv); return 1; }
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