Commit 3164a3cb authored by Hendrik Brueckner's avatar Hendrik Brueckner Committed by Martin Schwidefsky

[S390] kprobes: add parameter check to module_free()

When unregistering kprobes, kprobes calls module_free() and
always passes NULL for the mod parameter.  Add a check to
prevent NULL pointer dereferences.

See commit 740a8de0 for more details.
Signed-off-by: default avatarHendrik Brueckner <>
Signed-off-by: default avatarMartin Schwidefsky <>
parent c2f0e8c8
......@@ -55,8 +55,10 @@ void *module_alloc(unsigned long size)
/* Free memory returned from module_alloc */
void module_free(struct module *mod, void *module_region)
mod->arch.syminfo = NULL;
if (mod) {
mod->arch.syminfo = NULL;
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