From 56094edd17971372c7fea078ab41315ebf6214d0 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Wed, 26 Oct 2016 16:03:00 -0400 Subject: [PATCH] sunrpc: GFP_KERNEL should be GFP_NOFS in crypto code Writes may depend on the auth_gss crypto code, so we shouldn't be allocating with GFP_KERNEL there. This still leaves some crypto_alloc_* calls which end up doing GFP_KERNEL allocations in the crypto code. Those could probably done at crypto import time. Signed-off-by: J. Bruce Fields --- net/sunrpc/auth_gss/gss_krb5_crypto.c | 12 ++++++------ net/sunrpc/auth_gss/gss_krb5_mech.c | 3 +-- 2 files changed, 7 insertions(+), 8 deletions(-) diff --git a/net/sunrpc/auth_gss/gss_krb5_crypto.c b/net/sunrpc/auth_gss/gss_krb5_crypto.c index 90115ceefd49..fb39284ec174 100644 --- a/net/sunrpc/auth_gss/gss_krb5_crypto.c +++ b/net/sunrpc/auth_gss/gss_krb5_crypto.c @@ -200,7 +200,7 @@ make_checksum_hmac_md5(struct krb5_ctx *kctx, char *header, int hdrlen, if (IS_ERR(hmac_md5)) goto out_free_md5; - req = ahash_request_alloc(md5, GFP_KERNEL); + req = ahash_request_alloc(md5, GFP_NOFS); if (!req) goto out_free_hmac_md5; @@ -230,7 +230,7 @@ make_checksum_hmac_md5(struct krb5_ctx *kctx, char *header, int hdrlen, goto out; ahash_request_free(req); - req = ahash_request_alloc(hmac_md5, GFP_KERNEL); + req = ahash_request_alloc(hmac_md5, GFP_NOFS); if (!req) goto out_free_hmac_md5; @@ -299,7 +299,7 @@ make_checksum(struct krb5_ctx *kctx, char *header, int hdrlen, if (IS_ERR(tfm)) goto out_free_cksum; - req = ahash_request_alloc(tfm, GFP_KERNEL); + req = ahash_request_alloc(tfm, GFP_NOFS); if (!req) goto out_free_ahash; @@ -397,7 +397,7 @@ make_checksum_v2(struct krb5_ctx *kctx, char *header, int hdrlen, goto out_free_cksum; checksumlen = crypto_ahash_digestsize(tfm); - req = ahash_request_alloc(tfm, GFP_KERNEL); + req = ahash_request_alloc(tfm, GFP_NOFS); if (!req) goto out_free_ahash; @@ -963,7 +963,7 @@ krb5_rc4_setup_seq_key(struct krb5_ctx *kctx, struct crypto_skcipher *cipher, } desc = kmalloc(sizeof(*desc) + crypto_shash_descsize(hmac), - GFP_KERNEL); + GFP_NOFS); if (!desc) { dprintk("%s: failed to allocate shash descriptor for '%s'\n", __func__, kctx->gk5e->cksum_name); @@ -1030,7 +1030,7 @@ krb5_rc4_setup_enc_key(struct krb5_ctx *kctx, struct crypto_skcipher *cipher, } desc = kmalloc(sizeof(*desc) + crypto_shash_descsize(hmac), - GFP_KERNEL); + GFP_NOFS); if (!desc) { dprintk("%s: failed to allocate shash descriptor for '%s'\n", __func__, kctx->gk5e->cksum_name); diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c index 60595835317a..7bb2514aadd9 100644 --- a/net/sunrpc/auth_gss/gss_krb5_mech.c +++ b/net/sunrpc/auth_gss/gss_krb5_mech.c @@ -451,8 +451,7 @@ context_derive_keys_rc4(struct krb5_ctx *ctx) goto out_err_free_hmac; - desc = kmalloc(sizeof(*desc) + crypto_shash_descsize(hmac), - GFP_KERNEL); + desc = kmalloc(sizeof(*desc) + crypto_shash_descsize(hmac), GFP_NOFS); if (!desc) { dprintk("%s: failed to allocate hash descriptor for '%s'\n", __func__, ctx->gk5e->cksum_name); -- 2.20.1