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AJvYcCWXzs60oEU/3m57TQc2cv3C8Wv1noXFZq21NEGYn4/rBhYsEDENxztYGmHsIyQVbrGrwEB5RKt4HDUbO4E=@vger.kernel.org X-Gm-Message-State: AOJu0YxTHW3ABuCchT4y5EQXpt8auvRRyQlnTLkKIQDrJ371kHYY9spo WxVNFW+I17OdP9i2OABdeTAEKMCJV7PWBRlqQZXa0v139o729TInT4RMgw/I+k7+rCaWGLAUShO ZA27N7bGQ/xT9m0QAUzE7QyblyQUapsxvzogTlDHMvZUhtBLDz/F2OD8+Abc= X-Google-Smtp-Source: AGHT+IHvZHgVqZ2gLYBy1BwzdWwdDpnEx8KDqOxqqZr4ueOTARER0kfWHjvw+Xsp5JCASB+duBwHVP9LeadQPpVkIg3BxVX5HqNM Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1a2b:b0:430:ab98:7b27 with SMTP id e9e14a558f8ab-430c527d375mr222509045ab.20.1761015062186; Mon, 20 Oct 2025 19:51:02 -0700 (PDT) Date: Mon, 20 Oct 2025 19:51:02 -0700 In-Reply-To: <287c3a106ca4565311685d637af0884c5a6bdea2.1761011646.git.xiaopei01@kylinos.cn> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68f6f516.050a0220.346f24.0002.GAE@google.com> Subject: Re: [syzbot] [crypto?] KMSAN: uninit-value in poly1305_blocks From: syzbot To: davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, xiaopei01@kylinos.cn Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: KMSAN: uninit-value in poly1305_blocks ===================================================== BUG: KMSAN: uninit-value in poly1305_blocks+0x1a9/0x5f0 lib/crypto/x86/poly1305.h:110 poly1305_blocks+0x1a9/0x5f0 lib/crypto/x86/poly1305.h:110 poly1305_update+0x169/0x400 lib/crypto/poly1305.c:50 poly_hash+0x9f3/0x1a00 crypto/chacha20poly1305.c:168 poly_genkey+0x3b6/0x450 crypto/chacha20poly1305.c:233 chacha_encrypt crypto/chacha20poly1305.c:269 [inline] chachapoly_encrypt+0x48a/0x5c0 crypto/chacha20poly1305.c:284 crypto_aead_encrypt+0xe2/0x160 crypto/aead.c:91 tls_do_encryption net/tls/tls_sw.c:582 [inline] tls_push_record+0x38c7/0x5810 net/tls/tls_sw.c:819 bpf_exec_tx_verdict+0x1a0c/0x26a0 net/tls/tls_sw.c:859 tls_sw_sendmsg_locked net/tls/tls_sw.c:1138 [inline] tls_sw_sendmsg+0x3401/0x4560 net/tls/tls_sw.c:1281 inet6_sendmsg+0x26c/0x2a0 net/ipv6/af_inet6.c:659 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x145/0x3d0 net/socket.c:742 sock_write_iter+0x3a6/0x420 net/socket.c:1195 do_iter_readv_writev+0x9e1/0xc20 fs/read_write.c:-1 vfs_writev+0x52a/0x1500 fs/read_write.c:1057 do_writev+0x1b5/0x580 fs/read_write.c:1103 __do_sys_writev fs/read_write.c:1171 [inline] __se_sys_writev fs/read_write.c:1168 [inline] __x64_sys_writev+0x99/0xf0 fs/read_write.c:1168 x64_sys_call+0x24b1/0x3e30 arch/x86/include/generated/asm/syscalls_64.h:21 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd9/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Local variable desc created at: poly_hash+0x11d/0x1a00 crypto/chacha20poly1305.c:135 poly_genkey+0x3b6/0x450 crypto/chacha20poly1305.c:233 CPU: 1 UID: 0 PID: 6603 Comm: syz.0.18 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 ===================================================== Tested on: commit: 6548d364 Merge tag 'cgroup-for-6.18-rc2-fixes' of git:.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11d40d2f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=bbd3e7f3c2e28265 dashboard link: https://syzkaller.appspot.com/bug?extid=01fcd39a0d90cdb0e3df compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 patch: https://syzkaller.appspot.com/x/patch.diff?x=14c58e7c580000