On platforms with memory encryption, alloc_cc_shared_pages_node() transitions the allocated memory to the shared state. set_memory_decrypted() may sleep, so the transition must run from a sleepable context.
Cc: Andrew Morton akpm@linux-foundation.org Signed-off-by: Aneesh Kumar K.V (Arm) aneesh.kumar@kernel.org --- mm/cc_shared.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/mm/cc_shared.c b/mm/cc_shared.c index 40c130cce74b..e70c26df2d06 100644 --- a/mm/cc_shared.c +++ b/mm/cc_shared.c @@ -8,6 +8,7 @@ #include <linux/errno.h> #include <linux/export.h> #include <linux/gfp.h> +#include <linux/kernel.h> #include <linux/log2.h> #include <linux/mm.h> #include <linux/mem_encrypt.h> @@ -106,6 +107,8 @@ static int __alloc_cc_shared_pages_node(int nid, gfp_t gfp, unsigned int order; int ret;
+ might_sleep(); + ret = cc_shared_calc_layout(requested, &layout); if (ret) return ret;