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AJvYcCUvH20uGaySh6vpU/0hbiMEO7rFqTXn2KIzR2BqJ3PfXszJ6Zlf2PjHw/fTBVvrDVx1kChyYKjGdKQQdyEAcDk6o59Y7pA3xFeW3cKe X-Gm-Message-State: AOJu0Yxc/ykMKgdBGgmCnphWfVA8Z9gfn6QThcu2hzP+yQcl27k2walB 6icOcpj9bVxUftplz7MIzCHV/d2DiQspXmxOQj9p1xMH6f7dKYDxmEx+AZrsq/9dd0aiVOHtYgT Ihk0ZWgmjM2WlrIZkQEGldnKSbEsCetI9drqB83Sn5DRBbZkJdbhjSyk= X-Google-Smtp-Source: AGHT+IH89SWITvw1/tRkT49rrluxfRKiWcM5ZDlyF3g+kwjMn+UUqr+WyDGSuExMjHj4y7+T6yuK7ILFz8g5bDmfG9lRGLMHKYCt Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:8615:b0:482:ca48:7441 with SMTP id iu21-20020a056638861500b00482ca487441mr258024jab.3.1713461942429; Thu, 18 Apr 2024 10:39:02 -0700 (PDT) Date: Thu, 18 Apr 2024 10:39:02 -0700 In-Reply-To: <20240418084011.313378-1-aha310510@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006a408f0616627229@google.com> Subject: Re: [syzbot] [net?] KMSAN: uninit-value in hsr_get_node (3) From: syzbot To: aha310510@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com 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 hsr_get_node ===================================================== BUG: KMSAN: uninit-value in hsr_get_node+0xab0/0xad0 net/hsr/hsr_framereg.c:250 hsr_get_node+0xab0/0xad0 net/hsr/hsr_framereg.c:250 fill_frame_info net/hsr/hsr_forward.c:577 [inline] hsr_forward_skb+0x330/0x30e0 net/hsr/hsr_forward.c:615 hsr_handle_frame+0xa20/0xb50 net/hsr/hsr_slave.c:69 __netif_receive_skb_core+0x1cff/0x6190 net/core/dev.c:5432 __netif_receive_skb_one_core net/core/dev.c:5536 [inline] __netif_receive_skb+0xca/0xa00 net/core/dev.c:5652 netif_receive_skb_internal net/core/dev.c:5738 [inline] netif_receive_skb+0x58/0x660 net/core/dev.c:5798 tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1549 tun_get_user+0x5566/0x69e0 drivers/net/tun.c:2002 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:2110 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0xb63/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x93/0xe0 fs/read_write.c:652 x64_sys_call+0x3062/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: __alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598 alloc_pages_mpol+0x299/0x990 mm/mempolicy.c:2264 alloc_pages+0x1bf/0x1e0 mm/mempolicy.c:2335 skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2921 tun_build_skb drivers/net/tun.c:1679 [inline] tun_get_user+0x1258/0x69e0 drivers/net/tun.c:1819 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:2110 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0xb63/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x93/0xe0 fs/read_write.c:652 x64_sys_call+0x3062/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 0 PID: 5497 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-00038-g8cd26fd90c1a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ===================================================== Tested on: commit: 8cd26fd9 Merge tag 'for-6.9-rc4-tag' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1398c9ab180000 kernel config: https://syzkaller.appspot.com/x/.config?x=87a805e655619c64 dashboard link: https://syzkaller.appspot.com/bug?extid=a81f2759d022496b40ab compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.