From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DCECB182B3 for ; Mon, 12 Jun 2023 09:42:03 +0000 (UTC) Received: from mail-io1-f78.google.com (mail-io1-f78.google.com [209.85.166.78]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA47D1BF6 for ; Mon, 12 Jun 2023 02:42:00 -0700 (PDT) Received: by mail-io1-f78.google.com with SMTP id ca18e2360f4ac-777a93b3277so401137739f.3 for ; Mon, 12 Jun 2023 02:42:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686562920; x=1689154920; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Uo0nUcpTxKIUFZRtuxSXLMwWUjL4QLmVMNpxBKJbpl8=; 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syzkaller Message-ID: <000000000000c047db05fdeb8790@google.com> Subject: [syzbot] [crypto?] general protection fault in crypto_shash_final From: syzbot To: davem@davemloft.net, dhowells@redhat.com, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2, SORTED_RECIPS,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Hello, syzbot found the following issue on: HEAD commit: 37ff78e977f1 mlxsw: spectrum_nve_vxlan: Fix unsupported fl.. git tree: net-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=15132add280000 kernel config: https://syzkaller.appspot.com/x/.config?x=526f919910d4a671 dashboard link: https://syzkaller.appspot.com/bug?extid=14234ccf6d0ef629ec1a compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1009d065280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16fdc72b280000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/41e829152d3c/disk-37ff78e9.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a594b97acb02/vmlinux-37ff78e9.xz kernel image: https://storage.googleapis.com/syzbot-assets/b41140b53372/bzImage-37ff78e9.xz The issue was bisected to: commit c662b043cdca89bf0f03fc37251000ac69a3a548 Author: David Howells Date: Tue Jun 6 13:08:56 2023 +0000 crypto: af_alg/hash: Support MSG_SPLICE_PAGES bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1426f12d280000 final oops: https://syzkaller.appspot.com/x/report.txt?x=1626f12d280000 console output: https://syzkaller.appspot.com/x/log.txt?x=1226f12d280000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+14234ccf6d0ef629ec1a@syzkaller.appspotmail.com Fixes: c662b043cdca ("crypto: af_alg/hash: Support MSG_SPLICE_PAGES") general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 1 PID: 5006 Comm: kworker/1:3 Not tainted 6.4.0-rc5-syzkaller-00859-g37ff78e977f1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Workqueue: cryptd cryptd_queue_worker RIP: 0010:crypto_shash_alg include/crypto/hash.h:827 [inline] RIP: 0010:crypto_shash_final+0x49/0x120 crypto/shash.c:171 Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 d5 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5d 00 48 8d 7b 20 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffffc90003a3fca8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000004 RSI: ffffffff83df1715 RDI: 0000000000000020 RBP: ffff88801b756b08 R08: 0000000000000005 R09: 00000000ffffff8d R10: 0000000000000000 R11: 1ffffffff21842f8 R12: ffff888029311988 R13: ffff88801b756b08 R14: ffff888014eaa600 R15: ffff8880b993bd80 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6c11c57440 CR3: 00000000221e4000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: cryptd_hash_final+0xea/0x140 crypto/cryptd.c:580 crypto_request_complete include/crypto/algapi.h:272 [inline] cryptd_queue_worker+0x130/0x1d0 crypto/cryptd.c:181 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:crypto_shash_alg include/crypto/hash.h:827 [inline] RIP: 0010:crypto_shash_final+0x49/0x120 crypto/shash.c:171 Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 d5 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5d 00 48 8d 7b 20 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffffc90003a3fca8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000004 RSI: ffffffff83df1715 RDI: 0000000000000020 RBP: ffff88801b756b08 R08: 0000000000000005 R09: 00000000ffffff8d R10: 0000000000000000 R11: 1ffffffff21842f8 R12: ffff888029311988 R13: ffff88801b756b08 R14: ffff888014eaa600 R15: ffff8880b993bd80 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6c11c57440 CR3: 00000000221e4000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 d5 00 00 00 jne 0xe3 e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 15: fc ff df 18: 48 8b 5d 00 mov 0x0(%rbp),%rbx 1c: 48 8d 7b 20 lea 0x20(%rbx),%rdi 20: 48 89 fa mov %rdi,%rdx 23: 48 c1 ea 03 shr $0x3,%rdx * 27: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2b: 0f 85 a8 00 00 00 jne 0xd9 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df 3b: 48 rex.W 3c: 8b .byte 0x8b --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup