From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C00AAC36014 for ; Tue, 1 Apr 2025 09:40:27 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C88AC280002; Tue, 1 Apr 2025 05:40:25 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C37D0280001; Tue, 1 Apr 2025 05:40:25 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AFEB4280002; Tue, 1 Apr 2025 05:40:25 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 95485280001 for ; Tue, 1 Apr 2025 05:40:25 -0400 (EDT) Received: from smtpin18.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 9ADBBC078A for ; Tue, 1 Apr 2025 09:40:26 +0000 (UTC) X-FDA: 83284979652.18.523B818 Received: from mail-io1-f77.google.com (mail-io1-f77.google.com [209.85.166.77]) by imf16.hostedemail.com (Postfix) with ESMTP id 0003818000B for ; Tue, 1 Apr 2025 09:40:24 +0000 (UTC) Authentication-Results: imf16.hostedemail.com; dkim=none; spf=pass (imf16.hostedemail.com: domain of 3iLTrZwkbAOUZfgRHSSLYHWWPK.NVVNSLbZLYJVUaLUa.JVT@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.166.77 as permitted sender) smtp.mailfrom=3iLTrZwkbAOUZfgRHSSLYHWWPK.NVVNSLbZLYJVUaLUa.JVT@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1743500425; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding:in-reply-to: references; bh=T99KLhRaT/zg5krqq6egVQGPY8M5vnskt1JQriQgYiU=; b=eYq4zbgKQd7lUEg60Jm+WY0shEetFfOYLzuILBhh1brYMzGhycramFoVnGShdFrhF+5CsB UkrlNVGEpPIKueEbxs62gBuXmMPMLwjM/cIlXlWTb8+Vr6SJXjLNm5zV5nOGFeJ2W4iB6H LjU+/lHt+7olpxAqcNZXrFhSpeDLIjc= ARC-Authentication-Results: i=1; imf16.hostedemail.com; dkim=none; spf=pass (imf16.hostedemail.com: domain of 3iLTrZwkbAOUZfgRHSSLYHWWPK.NVVNSLbZLYJVUaLUa.JVT@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.166.77 as permitted sender) smtp.mailfrom=3iLTrZwkbAOUZfgRHSSLYHWWPK.NVVNSLbZLYJVUaLUa.JVT@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none) ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1743500425; a=rsa-sha256; cv=none; b=mQY6yl8ZfGVOW7He/pS8skeF62ueVTFXmUPi1wJo/cFHcP0QLcjgs1KzCkRV/491OLH+Tx VZ1QWZj4T3rXvDDPFNIIHWXsPR0fyjulXb3lXvu6DRfj2sqZfJVmlbWFBL+ayYC9P/+jLB p+XHnnM2DwnUzTQkyWX3M25uBdkpNj0= Received: by mail-io1-f77.google.com with SMTP id ca18e2360f4ac-849d26dd331so611002939f.1 for ; Tue, 01 Apr 2025 02:40:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743500424; x=1744105224; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=T99KLhRaT/zg5krqq6egVQGPY8M5vnskt1JQriQgYiU=; b=abCXcuu4wWHJ8+9+4kSfj8CAJPZkgTdYptqtEabyJerBf8G6RusdIEZd4xwGM9nDw7 p8vKFiDcUR6w9lMId7/JP4I4T5kOORkzBVpyBAcZcPZyYpOpY+nQVcBQqnvHM1tUYNjA ZOSKzvz/EUz6tlnXHn9F/MzfhCFPJ7QDH6CUhcVBXDUu9nrXZG5OqkcMTS7+NtUodqHx JVsLCdJEeDk2TkZTn7+MCpsxzIv5zmvaoALSKsKrFR+jHnU1CWfoXJkQsxpcYcxLUXom zColzScDgL8rX3Jhmkt9ybXZmPwmvDhVw/bCmMGSK+OiJmXTys99IZWBdm5piEoqVkD6 vcAA== X-Forwarded-Encrypted: i=1; AJvYcCVm/ejTHJQyEqY9eyEJGph6JStBg1NFlvMIJEDWUjZZlymQYTOv4P87jPmLXjEq1LhXDzxcZvjVSg==@kvack.org X-Gm-Message-State: AOJu0YzueEBgmbmWs+SULkdNyIzdOjWvJj1okEgJekg5Me/7UcsTI4JE RJFQXmPX8iBNgPCkYULaQIzaeTwOauzEQegFC0+hvCICkBTZrCjYcDdPyVclIXefmOFq21nXk/2 qg1HkQ+9J0ueGTNepyWwcsoEq0G2HZDixiHTwOcCcSMjnZ2l3VuDaBKg= X-Google-Smtp-Source: AGHT+IE2OVwt/Fi/HdMaxn9+dAXwdx2XZ6OX3zUiWvhr4o2huMhlCYQJ24LyTxTZ4x9N79CdkPXEiu2RZmWoBAwlYHvfeIggBhfN MIME-Version: 1.0 X-Received: by 2002:a92:6812:0:b0:3d1:84ad:165e with SMTP id e9e14a558f8ab-3d5d6cfd612mr117415665ab.7.1743500424049; Tue, 01 Apr 2025 02:40:24 -0700 (PDT) Date: Tue, 01 Apr 2025 02:40:24 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67ebb488.050a0220.297a31.000a.GAE@google.com> Subject: [syzbot] [fs?] [mm?] KCSAN: data-race in mem_cgroup_track_foreign_dirty_slowpath / mem_cgroup_track_foreign_dirty_slowpath (7) From: syzbot To: akpm@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com, willy@infradead.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 0003818000B X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: zhiwbuna6dqczfet86u7cmw9zysnyouq X-HE-Tag: 1743500424-915878 X-HE-Meta: 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 RdmmH+7K 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 /lPzVKtt kSAMl6OCBYZtVSNNFDNEGvH7WyG1nuXCSQ+PYA7H5+6TolgyKbFlCJb2sp9nth2ocnvhDKXrE0OLYCd8KQ5YSqf6nkxvDxEK/Z7DTagIUq/upVMjxJMuwKV3h3W7JezdBwL9TDZntGhN0Iabl/iL8bsid1V4mc8j8OzyiX7omU0GlQlD2Ofn7KtaIS/dm2YXrzcSyPHpCJTNzBdQ45Q8RAY7Lykc9FyOixzbM3IWq7Hvm0erKgGNAyDDsVjI1tRWgx9w+7ho19nNbaFS2C+i4Cv2/ungF13IT5/fpRittVPoyw2MOM1TasSAyrOX9eQBtPZeclKth82WtBageqHfxZMoir0Z3eQUhIizyYuZb5mfMOzkMgEhgo8qursBDawTUY2+Ah40U+9xgmi4FN2uIQyWwW/9CsK+ X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot found the following issue on: HEAD commit: 1e7857b28020 x86: don't re-generate cpufeaturemasks.h so e.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12bb8268580000 kernel config: https://syzkaller.appspot.com/x/.config?x=bdb65086dcaf0454 dashboard link: https://syzkaller.appspot.com/bug?extid=6f43371b62882ee50909 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/08333bdf2b6c/disk-1e7857b2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c798f117761a/vmlinux-1e7857b2.xz kernel image: https://storage.googleapis.com/syzbot-assets/a2171375da2b/bzImage-1e7857b2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6f43371b62882ee50909@syzkaller.appspotmail.com ================================================================== BUG: KCSAN: data-race in mem_cgroup_track_foreign_dirty_slowpath / mem_cgroup_track_foreign_dirty_slowpath write to 0xffff8881184b45d8 of 8 bytes by task 15048 on cpu 0: mem_cgroup_track_foreign_dirty_slowpath+0x3bf/0x450 mm/memcontrol.c:-1 mem_cgroup_track_foreign_dirty include/linux/memcontrol.h:1586 [inline] folio_account_dirtied mm/page-writeback.c:2756 [inline] __folio_mark_dirty+0x3f5/0x4e0 mm/page-writeback.c:2797 mark_buffer_dirty+0x134/0x230 fs/buffer.c:1196 __block_commit_write fs/buffer.c:2189 [inline] block_page_mkwrite+0x29b/0x3f0 fs/buffer.c:2621 ext4_page_mkwrite+0x75c/0xba0 fs/ext4/inode.c:6225 do_page_mkwrite mm/memory.c:3253 [inline] wp_page_shared mm/memory.c:3654 [inline] do_wp_page+0xcaf/0x2380 mm/memory.c:3804 handle_pte_fault mm/memory.c:5906 [inline] __handle_mm_fault mm/memory.c:6033 [inline] handle_mm_fault+0xc78/0x2b30 mm/memory.c:6202 do_user_addr_fault arch/x86/mm/fault.c:1337 [inline] handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x3b9/0x650 arch/x86/mm/fault.c:1538 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 read to 0xffff8881184b45d8 of 8 bytes by task 15063 on cpu 1: mem_cgroup_track_foreign_dirty_slowpath+0xdb/0x450 mm/memcontrol.c:3291 mem_cgroup_track_foreign_dirty include/linux/memcontrol.h:1586 [inline] folio_account_dirtied mm/page-writeback.c:2756 [inline] __folio_mark_dirty+0x3f5/0x4e0 mm/page-writeback.c:2797 mark_buffer_dirty+0x134/0x230 fs/buffer.c:1196 __block_commit_write fs/buffer.c:2189 [inline] block_write_end+0x123/0x210 fs/buffer.c:2265 ext4_da_do_write_end fs/ext4/inode.c:3015 [inline] ext4_da_write_end+0x20a/0x810 fs/ext4/inode.c:3090 generic_perform_write+0x31e/0x4b0 mm/filemap.c:4135 ext4_buffered_write_iter+0x1ed/0x3c0 fs/ext4/file.c:299 ext4_file_write_iter+0x3b2/0xf80 include/linux/fs.h:-1 iter_file_splice_write+0x5f2/0x980 fs/splice.c:738 do_splice_from fs/splice.c:935 [inline] direct_splice_actor+0x160/0x2c0 fs/splice.c:1158 splice_direct_to_actor+0x305/0x680 fs/splice.c:1102 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0xd9/0x150 fs/splice.c:1227 do_sendfile+0x40a/0x690 fs/read_write.c:1368 __do_sys_sendfile64 fs/read_write.c:1429 [inline] __se_sys_sendfile64 fs/read_write.c:1415 [inline] __x64_sys_sendfile64+0x113/0x160 fs/read_write.c:1415 x64_sys_call+0xfc3/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:41 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000000ffffebe1 -> 0x00000000ffffef33 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 15063 Comm: syz.2.3982 Not tainted 6.14.0-syzkaller-11144-g1e7857b28020 #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 ================================================================== --- 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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup