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AJvYcCXTQ95H7j28b/yOGfBVpWdyDgL2sc3m8WXQunQnJ9nXZXminw4BhyCFTp7+SpbaHN03Z/rg/MPFKmix6zQ=@vger.kernel.org X-Gm-Message-State: AOJu0YxPKLSpcrTFfo+lzN11+ii0T8oP45KzZSIAFzX8HXVaHt3S9vIo fz84CgPkdwMI1xziQxpzENZR0e8++iVwO+iffAqBPQHSHlw+nLjVbjFQ5E4zruBE0FWp6NhlkDR FSBqQfHwdfU6FoKDbZ2fF8sbXb8+AtZLGFygi5hNnwm7rH5c4hXhbhHI= X-Google-Smtp-Source: AGHT+IHtDZ3qZwAVlyhJw1Na0QsYuXhcWRu+ctbhVLZqM6EcRVkGNZi9V1A7H+qmyrS9iizYHaY79zL9AVsLAwokaFo0Q56zJec2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3a87:b0:3a6:ae3d:920e with SMTP id e9e14a558f8ab-3a6f1a0ead7mr132035565ab.13.1731356465610; Mon, 11 Nov 2024 12:21:05 -0800 (PST) Date: Mon, 11 Nov 2024 12:21:05 -0800 In-Reply-To: <429d2bea-ef68-4130-bb8a-0fb5fd38663c@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67326731.050a0220.1fb99c.0155.GAE@google.com> Subject: Re: [syzbot] [hfs?] KMSAN: uninit-value in hfs_free_fork From: syzbot To: gianf.trad@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 hfs_free_fork loop0: detected capacity change from 0 to 64 ===================================================== BUG: KMSAN: uninit-value in __hfs_ext_read_extent fs/hfs/extent.c:160 [inline] BUG: KMSAN: uninit-value in hfs_free_fork+0x6b4/0xa50 fs/hfs/extent.c:320 __hfs_ext_read_extent fs/hfs/extent.c:160 [inline] hfs_free_fork+0x6b4/0xa50 fs/hfs/extent.c:320 hfs_cat_delete+0x501/0xb90 fs/hfs/catalog.c:247 hfs_remove+0x16a/0x2f0 fs/hfs/dir.c:262 vfs_unlink+0x676/0xa90 fs/namei.c:4469 do_unlinkat+0x823/0xe10 fs/namei.c:4533 __do_sys_unlink fs/namei.c:4581 [inline] __se_sys_unlink fs/namei.c:4579 [inline] __x64_sys_unlink+0x76/0xa0 fs/namei.c:4579 x64_sys_call+0x30d3/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:88 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: slab_post_alloc_hook mm/slub.c:4091 [inline] slab_alloc_node mm/slub.c:4134 [inline] __do_kmalloc_node mm/slub.c:4263 [inline] __kmalloc_noprof+0x661/0xf30 mm/slub.c:4276 kmalloc_noprof include/linux/slab.h:882 [inline] hfs_find_init+0x91/0x250 fs/hfs/bfind.c:21 hfs_free_fork+0x3bb/0xa50 fs/hfs/extent.c:316 hfs_cat_delete+0x501/0xb90 fs/hfs/catalog.c:247 hfs_remove+0x16a/0x2f0 fs/hfs/dir.c:262 vfs_unlink+0x676/0xa90 fs/namei.c:4469 do_unlinkat+0x823/0xe10 fs/namei.c:4533 __do_sys_unlink fs/namei.c:4581 [inline] __se_sys_unlink fs/namei.c:4579 [inline] __x64_sys_unlink+0x76/0xa0 fs/namei.c:4579 x64_sys_call+0x30d3/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:88 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: 1 UID: 0 PID: 6013 Comm: syz.0.15 Not tainted 6.12.0-rc7-syzkaller-g2d5404caa8c7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 ===================================================== Tested on: commit: 2d5404ca Linux 6.12-rc7 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12cd38c0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=d1e659028faecb9 dashboard link: https://syzkaller.appspot.com/bug?extid=2e6fb1f89ce5e13cd02d compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.