Commit f97ef759 authored Sep 10, 2015 by Sudip Mukherjee Committed by Greg Kroah-Hartman Sep 20, 2015

drivers/misc/sgi-gru: fix possible NULL dereference



If mmu_find_ops() returns NULL then we are allocating memory for gms
using kzalloc. But kzalloc can return NULL and we were dereferencing gms
in gru_dbg().

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 6894fdae

drivers/misc/sgi-gru/grutlbpurge.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -317,6 +317,7 @@ struct gru_mm_struct *gru_register_mmu_notifier(void)
		goto error;
		}
		}
		if (gms)
		gru_dbg(grudev, "gms %p, refcnt %d\n", gms,
		atomic_read(&gms->ms_refcnt));
		return gms;