From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755864AbdLORVy (ORCPT ); Fri, 15 Dec 2017 12:21:54 -0500 Received: from mail-pg0-f49.google.com ([74.125.83.49]:43947 "EHLO mail-pg0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755449AbdLORVv (ORCPT ); Fri, 15 Dec 2017 12:21:51 -0500 X-Google-Smtp-Source: ACJfBou/Lny9I9z3ykDxO+TdL3vUm/8Aoxd/wioYqSuvlhB8w3+71yE6XZTnTF+BH0eC4gvxAsDLaQ== Date: Fri, 15 Dec 2017 09:21:48 -0800 From: Eric Biggers To: syzbot Cc: davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: general protection fault in ___cache_free Message-ID: <20171215172148.GA629@zzz.localdomain> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.1 (2017-09-22) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Dec 15, 2017 at 12:02:01AM -0800, syzbot wrote: > Call Trace: > __cache_free mm/slab.c:3494 [inline] > kfree+0x1a3/0x250 mm/slab.c:3806 > blkcipher_walk_done+0x72b/0xde0 crypto/blkcipher.c:139 > encrypt+0x20e/0x540 arch/x86/crypto/salsa20_glue.c:79 > skcipher_crypt_blkcipher crypto/skcipher.c:622 [inline] > skcipher_decrypt_blkcipher+0x213/0x310 crypto/skcipher.c:640 > crypto_skcipher_decrypt include/crypto/skcipher.h:463 [inline] > _skcipher_recvmsg crypto/algif_skcipher.c:144 [inline] > skcipher_recvmsg+0xa54/0xf20 crypto/algif_skcipher.c:165 > sock_recvmsg_nosec net/socket.c:809 [inline] > sock_recvmsg+0xc9/0x110 net/socket.c:816 > ___sys_recvmsg+0x29b/0x630 net/socket.c:2185 > __sys_recvmsg+0xe2/0x210 net/socket.c:2230 > SYSC_recvmsg net/socket.c:2242 [inline] > SyS_recvmsg+0x2d/0x50 net/socket.c:2237 > entry_SYSCALL_64_fastpath+0x1f/0x96 Already fixed: #syz fix: crypto: salsa20 - fix blkcipher_walk API usage