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 ED6F5C4167B for ; Thu, 14 Dec 2023 19:30:31 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 3B43A8D00E1; Thu, 14 Dec 2023 14:30:31 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 33DA38D00C7; Thu, 14 Dec 2023 14:30:31 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1DD578D00E1; Thu, 14 Dec 2023 14:30:31 -0500 (EST) 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 01C7E8D00C7 for ; Thu, 14 Dec 2023 14:30:30 -0500 (EST) Received: from smtpin05.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id C5C8D1C1441 for ; Thu, 14 Dec 2023 19:30:30 +0000 (UTC) X-FDA: 81566415420.05.6198A49 Received: from mail-pf1-f198.google.com (mail-pf1-f198.google.com [209.85.210.198]) by imf09.hostedemail.com (Postfix) with ESMTP id 101CC14000D for ; Thu, 14 Dec 2023 19:30:27 +0000 (UTC) Authentication-Results: imf09.hostedemail.com; dkim=none; spf=pass (imf09.hostedemail.com: domain of 30ld7ZQkbAKETZaLBMMFSBQQJE.HPPHMFVTFSDPOUFOU.DPN@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.210.198 as permitted sender) smtp.mailfrom=30ld7ZQkbAKETZaLBMMFSBQQJE.HPPHMFVTFSDPOUFOU.DPN@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=1702582228; 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=oFxef2h5lrExuJ8D5wN9A1CJDkySZu+2Kkfu5Vl6v+Q=; b=VI7+Y69wz11iDZO2Va6NgrnBa4bZ/YrcBLlbLD5HwXJYw/n/Y82ydJdVv9Y65q7bKHBZ6x udaj8A59yxGkfSQ9dC4LSPfmRXnfnfJUUm4OyYHb8D1wYq8RnzC9nuDXIQR552cPd9DKtV DcVfXV9X1elQXtDSZahnn5d42n5+oC0= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1702582228; a=rsa-sha256; cv=none; b=TGEataABZPMi//gImFZnC/8KiZo31348N4ATaXsSOMG2O8IOyfaSXi0VsjgrMrplUxPvGk FKMaM03s1qgCb7CEObO74/sy3kIzcHoaW2X52STAyR6XOAH3u/yMugzjYT1zAEXxTRH6Ft 8MTLkDn7uXB0RjES24a4lSue+jnNDas= ARC-Authentication-Results: i=1; imf09.hostedemail.com; dkim=none; spf=pass (imf09.hostedemail.com: domain of 30ld7ZQkbAKETZaLBMMFSBQQJE.HPPHMFVTFSDPOUFOU.DPN@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.210.198 as permitted sender) smtp.mailfrom=30ld7ZQkbAKETZaLBMMFSBQQJE.HPPHMFVTFSDPOUFOU.DPN@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none) Received: by mail-pf1-f198.google.com with SMTP id d2e1a72fcca58-6ce77fec5d9so11160329b3a.2 for ; Thu, 14 Dec 2023 11:30:27 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702582227; x=1703187027; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=oFxef2h5lrExuJ8D5wN9A1CJDkySZu+2Kkfu5Vl6v+Q=; b=RZ4XEMoPJcWWOyeUJkROEgZMraOUDnkAiv6pKSWZIh7ClvvvVCHYE43+wJNhzeIOJn XTn2psoiDvmyj0ZvlkAdWHXKsWPG3EOENq520CRCbrYIiSBkv7mnyJHKJR1G/UC6s6+b 7o8s78c9lhe2XZVk/TGdRNWhczPGYbSdTGq2s1c9fi7Z7ub8zAaYJkA91cTL8VNEzCz2 C3rcrRCghZBSRyyJbUnuQQpjHxYjLjBf7QcPVIw5cDZKbCUGqZyvvYqOShTR7HYfyJ2d zyOQW1t9a5OhR8pTY/exFkuc9CaoMr0Ir/q4nj1cijBVIwGpZqhQHGf9vj1kOLZ6GU0i k5oQ== X-Gm-Message-State: AOJu0YzWv60l6CCONs5UEPm5OVnZZi1ZiOlm4Pe3VUg/TNaClbwtHaOT weECPCJxXEeSeNdUxhdBPMc8fe5/ejvryswoxvl15YjuC+aF X-Google-Smtp-Source: AGHT+IEZmS2KDd1o4gzGWFiiliXEyQLQO5gWVjZyRM0uF2KOupYUaFLfAkmCQCVNKz36roMZ09oblsWXT1+m0IrYth2UBOtBzHTz MIME-Version: 1.0 X-Received: by 2002:aa7:93b4:0:b0:6d2:671e:84cc with SMTP id x20-20020aa793b4000000b006d2671e84ccmr587103pff.0.1702582226950; Thu, 14 Dec 2023 11:30:26 -0800 (PST) Date: Thu, 14 Dec 2023 11:30:26 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d69fc4060c7d50a2@google.com> Subject: [syzbot] [mm?] [hfs?] KASAN: slab-out-of-bounds Write in shmem_file_read_iter From: syzbot To: akpm@linux-foundation.org, hughd@google.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 101CC14000D X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: 5ngjiwyxq7h6i6u7pfadgq6zzzhsd9hn X-HE-Tag: 1702582227-620494 X-HE-Meta: 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 H2DE3fQQ 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 2pkkvxiN HWIWNsqls8k8xkb0JwQrUw40XuDDRkfcj7gpJLwhVIN2CPaUDIpAYzO7C+9NVzhtUdSRGLGxVFFZnjWSQmCNxUoKuHCofm8Ie4VMJa7QALYS72Tiri03hciBlyw+N0ZUAicfl3gXxdFKT4fVakjSPqa8xLy0Ygx25kvHN7yC4cUtHNFgXK9kwHdVz5rNvCEZpOJ4FmIEQ5ZarWpoLOtViQI+LdDJXHQ9j1yv+b2q4OMhWGRIQqIe3crDr+W5Utiu8HVtPXxn8s2ts1ze8mOJtnoCBwFjMdSXzcE+7bImMDsqlL4f9b8gRM7w0MyLlBoaTK70rsnnGmwn5yQxkAseulUGr0GXhuek0etZyHbtjF9W6lsI4suIF2EPc57WRm0TQr104DKEs1hp5ijtIQLYI+2q7gagErkD0fiSKy0JMAg= X-Bogosity: Ham, tests=bogofilter, spamicity=0.040598, 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: d46efae31672 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=16803d66e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=f62dd67b72f86455 dashboard link: https://syzkaller.appspot.com/bug?extid=3e719fc23ab95580e4c2 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1743a366e80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17d5101ee80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/f1c7fab7b512/disk-d46efae3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/44ed3d86d2c1/vmlinux-d46efae3.xz kernel image: https://storage.googleapis.com/syzbot-assets/2e0b5f52455a/Image-d46efae3.gz.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/3e3c3babb0db/mount_2.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3e719fc23ab95580e4c2@syzkaller.appspotmail.com ================================================================== BUG: KASAN: slab-out-of-bounds in memcpy_to_iter lib/iov_iter.c:65 [inline] BUG: KASAN: slab-out-of-bounds in iterate_bvec include/linux/iov_iter.h:122 [inline] BUG: KASAN: slab-out-of-bounds in iterate_and_advance2 include/linux/iov_iter.h:249 [inline] BUG: KASAN: slab-out-of-bounds in iterate_and_advance include/linux/iov_iter.h:271 [inline] BUG: KASAN: slab-out-of-bounds in _copy_to_iter+0x7dc/0x1500 lib/iov_iter.c:186 Write of size 2048 at addr ffff0000ce31a400 by task kworker/u4:5/220 CPU: 1 PID: 220 Comm: kworker/u4:5 Not tainted 6.7.0-rc4-syzkaller-gd46efae31672 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Workqueue: loop0 loop_rootcg_workfn Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0x174/0x514 mm/kasan/report.c:475 kasan_report+0xd8/0x138 mm/kasan/report.c:588 kasan_check_range+0x254/0x294 mm/kasan/generic.c:187 __asan_memcpy+0x54/0x84 mm/kasan/shadow.c:106 memcpy_to_iter lib/iov_iter.c:65 [inline] iterate_bvec include/linux/iov_iter.h:122 [inline] iterate_and_advance2 include/linux/iov_iter.h:249 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] _copy_to_iter+0x7dc/0x1500 lib/iov_iter.c:186 copy_page_to_iter+0x200/0x2f8 lib/iov_iter.c:381 shmem_file_read_iter+0x4a0/0x9dc mm/shmem.c:2824 do_iter_read+0x668/0xa80 fs/read_write.c:795 vfs_iter_read+0x88/0xac fs/read_write.c:837 lo_read_simple drivers/block/loop.c:290 [inline] do_req_filebacked drivers/block/loop.c:500 [inline] loop_handle_cmd drivers/block/loop.c:1915 [inline] loop_process_work+0xe9c/0x2498 drivers/block/loop.c:1950 loop_rootcg_workfn+0x28/0x38 drivers/block/loop.c:1981 process_one_work+0x694/0x1204 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2784 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 Allocated by task 6095: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x7c mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:511 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:198 [inline] __do_kmalloc_node mm/slab_common.c:1007 [inline] __kmalloc+0xcc/0x1b8 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] hfsplus_read_wrapper+0x46c/0xfcc fs/hfsplus/wrapper.c:181 hfsplus_fill_super+0x2f0/0x166c fs/hfsplus/super.c:413 mount_bdev+0x1e8/0x2b4 fs/super.c:1650 hfsplus_mount+0x44/0x58 fs/hfsplus/super.c:641 legacy_get_tree+0xd4/0x16c fs/fs_context.c:662 vfs_get_tree+0x90/0x288 fs/super.c:1771 do_new_mount+0x25c/0x8c8 fs/namespace.c:3337 path_mount+0x590/0xe04 fs/namespace.c:3664 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount fs/namespace.c:3863 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3863 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 The buggy address belongs to the object at ffff0000ce31a400 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 0 bytes inside of allocated 512-byte region [ffff0000ce31a400, ffff0000ce31a600) The buggy address belongs to the physical page: page:00000000950b7bf3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10e318 head:00000000950b7bf3 order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0x5ffc00000000840(slab|head|node=0|zone=2|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 05ffc00000000840 ffff0000c0001c80 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000ce31a500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000ce31a580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff0000ce31a600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000ce31a680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000ce31a700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== --- 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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