From: John Paul Adrian Glaubitz glaubitz@physik.fu-berlin.de
[ Upstream commit 80f746e2bd0e1da3fdb49a53570e54a1a225faac ]
The Store Queue code allocates a bitmap buffer with the size of multiple of sizeof(long) in sq_api_init(). While the buffer size is calculated correctly, the code uses the wrong element size to allocate the buffer which results in the allocated bitmap buffer being too small.
Fix this by allocating the buffer with kcalloc() with element size sizeof(long) instead of kzalloc() whose elements size defaults to sizeof(char).
Fixes: d7c30c682a27 ("sh: Store Queue API rework.") Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be Signed-off-by: John Paul Adrian Glaubitz glaubitz@physik.fu-berlin.de Link: https://lore.kernel.org/r/20230419114854.528677-1-glaubitz@physik.fu-berlin.... Signed-off-by: Sasha Levin sashal@kernel.org --- arch/sh/kernel/cpu/sh4/sq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/sh/kernel/cpu/sh4/sq.c b/arch/sh/kernel/cpu/sh4/sq.c index a76b94e41e913..8ddfe9989f5fc 100644 --- a/arch/sh/kernel/cpu/sh4/sq.c +++ b/arch/sh/kernel/cpu/sh4/sq.c @@ -382,7 +382,7 @@ static int __init sq_api_init(void) if (unlikely(!sq_cache)) return ret;
- sq_bitmap = kzalloc(size, GFP_KERNEL); + sq_bitmap = kcalloc(size, sizeof(long), GFP_KERNEL); if (unlikely(!sq_bitmap)) goto out;