4.13-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> commit 3c08377262880afc1621ab9cb6dbe7df47a6033d upstream. Due to the use of per-CPU buffers, scomp_acomp_comp_decomp() executes with preemption disabled, and so whether the CRYPTO_TFM_REQ_MAY_SLEEP flag is set is irrelevant, since we cannot sleep anyway. So disregard the flag, and use GFP_ATOMIC unconditionally. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- crypto/scompress.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/crypto/scompress.c +++ b/crypto/scompress.c @@ -211,9 +211,7 @@ static int scomp_acomp_comp_decomp(struc scratch_dst, &req->dlen, *ctx); if (!ret) { if (!req->dst) { - req->dst = crypto_scomp_sg_alloc(req->dlen, - req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? - GFP_KERNEL : GFP_ATOMIC); + req->dst = crypto_scomp_sg_alloc(req->dlen, GFP_ATOMIC); if (!req->dst) goto out; }