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Code Issues Releases Wiki Activity

objtool: Fix SEGFAULT 

[ Upstream commit efb11fdb3e ]

find_insn() will return NULL in case of failure. Check insn in order
to avoid a kernel Oops for NULL pointer dereference.

Tested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221114175754.1131267-9-sv@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Christophe Leroy 2022-11-14 23:27:46 +05:30 committed by Greg Kroah-Hartman
parent bf86a640a3
commit 38b9415abb
1 changed files with 1 additions and 1 deletions
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2
tools/objtool/check.c
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@ -207,7 +207,7 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func,
return false;
insn = find_insn(file, func->sec, func->offset);
if (!insn->func)
if (!insn || !insn->func)
return false;
func_for_each_insn(file, func, insn) {