From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8D1D626156B for ; Thu, 5 Jun 2025 14:13:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749132788; cv=none; b=lfpVh76nsV4woG6EVmgkKLa/hUONmtsCqiD1hXgyM8bAtPGwLc0fnp1bFu8FMTKpH3epu/g4NDHf2ofMjYM2WV7e5hVOMxQoMMsDlawkPWIu8QLeEArlzAWkbT5+Su7ExEeoq4vVzRBBcvROGSwr9Y1NeFTRTAV+9OCthI8gJd0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749132788; c=relaxed/simple; bh=umSL5beEUobeZGxzkBdiVbovvnKj7LQIpwGmCZgcxEE=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=P4gVjfRc7tvJnREVNGqoKNxNZoFFnnnW7pvXpGNxUjWEAPtymUVK/A+gGtSQB2L1N95GHmOS2E4+4zO9IkintV6F1st9U2SpjRMAcDgQrUN6MUgqsXCIh7UHpW23nNM8hiYxkyL5bvgNb3efG9ulnkbsFhjNAcsSaWBek8ifP78= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.200 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f200.google.com with SMTP id e9e14a558f8ab-3ddc4908c4dso16776855ab.3 for ; Thu, 05 Jun 2025 07:13:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749132785; x=1749737585; h=content-transfer-encoding:to:from:subject:message-id:in-reply-to :date:mime-version:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=0YW0P8XbUGYocEpxJlVM+/uRIsSaN1nclHTkqn2m8Gg=; b=VP9JeJarnnPqUqnD76Rqhg+EeC9dV03qKk4Nz419s5Nz/vV6wJIok0DMt2exg5FucD yY+IvGUClomxQxk1mV/cXI94Psx0bNvLZxuwz/P2PTwoKFbTI6d6H0TGD1p2PBsscNXC Rw0lRCNOYk+AscoswNXDlX8x8+y/3yH9AfLryoMzNob/kHtMDSFqtgsXkusf5v9ggEJx CRi7Q7QQhgwn7U/GFFRnzPozRRPUfJnrOWdY5rqrJKcRL5Um38lRemz/gj69jFUDPrDs fcvwcyV/4Y3yvpj1Xd4Sa+eEmOeUc03a2UUj02HnHfX/x4X7Kg2R6lh17TP++L6gHc3b e5NQ== X-Forwarded-Encrypted: i=1; AJvYcCVCkwJA6KLUThnPfCp0fAA1aTdaMYk53PxLs+qO/FTXbC8P4InV186tdj0rvvsEwnZ/gNM+ImqgBXhvL5o=@vger.kernel.org X-Gm-Message-State: AOJu0YyQ9cOLu+ebMZw/Wr987+91AZPK85Nfr6fjL2pz7YGaQvtWgUeD Sk4LhCJtCBkmcEjynf9uQIObTkhPwnmCUpS9VecrgMpNkCCwbR64gQvxhCAWPsxP8/kEzMgieM8 opa+HDmQ2ls83PnZdItrBEZjx9NPTMdVpuU/1NTwDTWZPcRCH5NWVDi2ssjc= X-Google-Smtp-Source: AGHT+IGKZYs/Gw8/RLLsEhgGcVbl8fczGXpCxOuE47LrLxHgzkgsAIwbmSeTXEEmSmy7aC3oJIxn4Ably3ELB11fwFqe4tprfb/x Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2188:b0:3dd:a4f0:8339 with SMTP id e9e14a558f8ab-3ddbed0ef1cmr79162445ab.8.1749132783370; Thu, 05 Jun 2025 07:13:03 -0700 (PDT) Date: Thu, 05 Jun 2025 07:13:03 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6841a5ef.a00a0220.d4325.001c.GAE@google.com> Subject: Re: [syzbot] [ntfs3?] KASAN: slab-out-of-bounds Read in ntfs_utf16_to_nls From: syzbot To: eadavis@qq.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot has tested the proposed patch but the reproducer is still triggering= an issue: KASAN: slab-out-of-bounds Read in ntfs_utf16_to_nls nl: 254, name: file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa= aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa= aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa= aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, ntfs_dir_emit keysize: 76, name len: 255, nls: ffffffff8e445280, fn: f, ntfs_dir_emit ntfs3(loop0): failed to convert "0000" to maccroatian =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D BUG: KASAN: slab-out-of-bounds in ntfs_utf16_to_nls+0x3c9/0x5a0 fs/ntfs3/di= r.c:49 Read of size 2 at addr ffff888033905000 by task syz.0.16/6595 CPU: 1 UID: 0 PID: 6595 Comm: syz.0.16 Not tainted 6.15.0-syzkaller-12141-g= ec7714e49479-dirty #0 PREEMPT(full)=20 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Goo= gle 05/07/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xd2/0x2b0 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 ntfs_utf16_to_nls+0x3c9/0x5a0 fs/ntfs3/dir.c:49 ntfs_dir_emit fs/ntfs3/dir.c:310 [inline] ntfs_read_hdr+0x6b5/0xca0 fs/ntfs3/dir.c:387 ntfs_readdir+0xa5c/0xdd0 fs/ntfs3/dir.c:498 iterate_dir+0x5ac/0x770 fs/readdir.c:108 __do_sys_getdents64 fs/readdir.c:410 [inline] __se_sys_getdents64+0xe4/0x260 fs/readdir.c:396 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f414938e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 = 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff f= f 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f414a2cd038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007f41495b5fa0 RCX: 00007f414938e969 RDX: 0000000000001000 RSI: 0000200000000f80 RDI: 0000000000000004 RBP: 00007f4149410ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f41495b5fa0 R15: 00007fffafbf4148 Allocated by task 6595: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4328 [inline] __kmalloc_noprof+0x27a/0x4f0 mm/slub.c:4340 kmalloc_noprof include/linux/slab.h:909 [inline] indx_read+0x27c/0xc20 fs/ntfs3/index.c:1059 ntfs_readdir+0x9d8/0xdd0 fs/ntfs3/dir.c:493 iterate_dir+0x5ac/0x770 fs/readdir.c:108 __do_sys_getdents64 fs/readdir.c:410 [inline] __se_sys_getdents64+0xe4/0x260 fs/readdir.c:396 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888033904000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 0 bytes to the right of allocated 4096-byte region [ffff888033904000, ffff888033905000) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x33900 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000040(head|node=3D0|zone=3D1|lastcpupid=3D0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff88801a442140 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080040004 00000000f5000000 0000000000000000 head: 00fff00000000040 ffff88801a442140 dead000000000122 0000000000000000 head: 0000000000000000 0000000080040004 00000000f5000000 0000000000000000 head: 00fff00000000003 ffffea0000ce4001 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__= GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 6595, t= gid 6594 (syz.0.16), ts 131229531839, free_ts 131158758528 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704 prep_new_page mm/page_alloc.c:1712 [inline] get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3669 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2451 [inline] allocate_slab+0x8a/0x3b0 mm/slub.c:2619 new_slab mm/slub.c:2673 [inline] ___slab_alloc+0xbfc/0x1480 mm/slub.c:3859 __slab_alloc mm/slub.c:3949 [inline] __slab_alloc_node mm/slub.c:4024 [inline] slab_alloc_node mm/slub.c:4185 [inline] __do_kmalloc_node mm/slub.c:4327 [inline] __kmalloc_noprof+0x305/0x4f0 mm/slub.c:4340 kmalloc_noprof include/linux/slab.h:909 [inline] indx_read+0x27c/0xc20 fs/ntfs3/index.c:1059 indx_find+0x4bb/0xba0 fs/ntfs3/index.c:1179 indx_insert_entry+0x4f1/0x720 fs/ntfs3/index.c:1963 ntfs_create_inode+0x2317/0x3340 fs/ntfs3/inode.c:1620 ntfs_mknod+0x3b/0x50 fs/ntfs3/namei.c:120 vfs_mknod+0x37f/0x3c0 fs/namei.c:4235 do_mknodat+0x385/0x4d0 fs/namei.c:-1 __do_sys_mknod fs/namei.c:4318 [inline] __se_sys_mknod fs/namei.c:4316 [inline] __x64_sys_mknod+0x8c/0xa0 fs/namei.c:4316 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 page last free pid 6275 tgid 6275 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1248 [inline] __free_frozen_pages+0xc65/0xe60 mm/page_alloc.c:2706 discard_slab mm/slub.c:2717 [inline] __put_partials+0x161/0x1c0 mm/slub.c:3186 put_cpu_partial+0x17c/0x250 mm/slub.c:3261 __slab_free+0x2f7/0x400 mm/slub.c:4513 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4148 [inline] slab_alloc_node mm/slub.c:4197 [inline] kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4204 anon_vma_chain_alloc mm/rmap.c:142 [inline] __anon_vma_prepare+0xcb/0x4a0 mm/rmap.c:195 __vmf_anon_prepare mm/memory.c:3523 [inline] vmf_anon_prepare mm/internal.h:410 [inline] do_anonymous_page mm/memory.c:5087 [inline] do_pte_missing mm/memory.c:4249 [inline] handle_pte_fault mm/memory.c:6089 [inline] __handle_mm_fault+0x4d02/0x5620 mm/memory.c:6232 handle_mm_fault+0x2d5/0x7f0 mm/memory.c:6401 do_user_addr_fault+0x764/0x1390 arch/x86/mm/fault.c:1387 handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 Memory state around the buggy address: ffff888033904f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888033904f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888033905000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888033905080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888033905100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Tested on: commit: ec7714e4 Merge tag 'rust-6.16' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=3D136f31d4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=3D26abb92f9ef9d1d= 0 dashboard link: https://syzkaller.appspot.com/bug?extid=3D598057afa0f49e62b= d23 compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-= 1~exp1~20250514183223.118), Debian LLD 20.1.6 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D1411e5705800= 00