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fix possible null ptr deref in kallsyms_lookup

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ugh, this function gets called by our unwinder. recursive backtrace for
the win... bisection to find this one was "fun."

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kyle McMartin 2007-05-30 02:43:16 -04:00 committed by Linus Torvalds
parent b927b3e2c9
commit 7a74fc4925
1 changed files with 2 additions and 1 deletions
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3
kernel/kallsyms.c
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@ -257,7 +257,8 @@ const char *kallsyms_lookup(unsigned long addr,
pos = get_symbol_pos(addr, symbolsize, offset); pos = get_symbol_pos(addr, symbolsize, offset);
/* Grab name */ /* Grab name */
kallsyms_expand_symbol(get_symbol_offset(pos), namebuf); kallsyms_expand_symbol(get_symbol_offset(pos), namebuf);
*modname = NULL; if (modname)
*modname = NULL;
return namebuf; return namebuf;
} }