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AJvYcCWLYenhGpnWTcScCcxBinOElmk1Vgoi+qxubgOFKz9uYnIdsJYUKQPen4pVkpyQ79/W8smlZXEnZJrRIG3ZcV44Mcf0Zk7XBiI3zqU7 X-Gm-Message-State: AOJu0YygohA1Vbgb+o32ClizilQv3xZz/qE5NWKxVnOLDavnMgd8DMNo BmmzuwYg5g59QrTFWW8LV0xgMyD9j++la+9fRGUY7GVXy9D8zKZxD/0A5OM4Dt8YK5pw5gVzrrG J0HSPJiuSDl1pVVp5JVPJaW68v/COBrlzswFm1ARbNhySYZojS1j7O0w= X-Google-Smtp-Source: AGHT+IGf9ONwwUT2zK0i54SCwUEuXhGAgHIPypP4pfIiZ8SYC1ocOzKDeyOABe/A4SZsqNmrgfcwsaZIOo1i4cBUisY8NOiZyqWG Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:258a:b0:4c0:bcff:656b with SMTP id 8926c6da1cb9f-4c23fd0cf47mr62735173.2.1721435882932; Fri, 19 Jul 2024 17:38:02 -0700 (PDT) Date: Fri, 19 Jul 2024 17:38:02 -0700 In-Reply-To: <20240719162238.71387-1-aha310510@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004e613b061da30600@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+0xd05/0xd30 net/hsr/hsr_framereg.c:275 hsr_get_node+0xd05/0xd30 net/hsr/hsr_framereg.c:275 fill_frame_info net/hsr/hsr_forward.c:678 [inline] hsr_forward_skb+0xe9d/0x3b40 net/hsr/hsr_forward.c:715 hsr_handle_frame+0x914/0xbb0 net/hsr/hsr_slave.c:70 __netif_receive_skb_core+0x1f19/0x6c90 net/core/dev.c:5554 __netif_receive_skb_one_core net/core/dev.c:5658 [inline] __netif_receive_skb+0xca/0xa00 net/core/dev.c:5774 netif_receive_skb_internal net/core/dev.c:5860 [inline] netif_receive_skb+0x58/0x660 net/core/dev.c:5920 tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1549 tun_get_user+0x5677/0x6b50 drivers/net/tun.c:2006 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2052 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xb2f/0x1550 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+0x3490/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: __alloc_pages_noprof+0x9d6/0xe70 mm/page_alloc.c:4706 alloc_pages_mpol_noprof+0x299/0x990 mm/mempolicy.c:2265 alloc_pages_noprof+0x1bf/0x1e0 mm/mempolicy.c:2336 skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2941 tun_build_skb drivers/net/tun.c:1680 [inline] tun_get_user+0x1262/0x6b50 drivers/net/tun.c:1823 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2052 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xb2f/0x1550 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+0x3490/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 0 PID: 5480 Comm: syz-executor.0 Not tainted 6.10.0-syzkaller-09703-gd7e78951a8b8-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 ===================================================== Tested on: commit: d7e78951 Merge tag 'net-6.11-rc0' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=116a2349980000 kernel config: https://syzkaller.appspot.com/x/.config?x=be93d3b0d4dc66d7 dashboard link: https://syzkaller.appspot.com/bug?extid=a81f2759d022496b40ab compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=106b443d980000