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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6622CC433FE for ; Sat, 1 Oct 2022 14:28:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229713AbiJAO2H (ORCPT ); Sat, 1 Oct 2022 10:28:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36714 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229591AbiJAO1p (ORCPT ); Sat, 1 Oct 2022 10:27:45 -0400 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9F4CD481E4 for ; Sat, 1 Oct 2022 07:27:41 -0700 (PDT) Received: by mail-io1-f71.google.com with SMTP id e14-20020a6b500e000000b006a13488a320so4459962iob.12 for ; Sat, 01 Oct 2022 07:27:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date; bh=ot8S7knVhE/ULqHSauVSXDrHW8LC+2Qa8wO45U/7T5A=; b=1tN+xJ+KvXFKKJQ4dQTz30AvG0gzmUycEauXvfFxrXNJlDAmX34IvRNOUAPTQnMhyN XITCR5Oe4n3MmC24po8+8tLh7t3O4QtQmD79qyIOEKVBaMPjvZ9QGY0fCj1H+16J0KnK IPmzDxcpxuJaDQfh3yLXAiCT55RUhNSxzT+SqKy98wFcE1ht4xK/6iO0D4sZGtMfL5UC yeTfidxh4mxaTe+XYxGX9f9Y1xekdfluLYYR6erEq9J5QXG7PsXBG/RSPKadRI9+7OW0 gFMz7bYrFdrPqJ6ElXXYXnu9dgPonzPLOsIu/aS/+mlFm9szHJUln3u2rjUORBpRHZRE /kOA== X-Gm-Message-State: ACrzQf0JqYAmVFktbtSni5UNe0c+2pnpMGMcgFzjvGXegTQuhfyc1M2h kB+gLXMIOHn8GKm7G12UwpFOBGDSOOvRvY1U6AKiuAxlitAW X-Google-Smtp-Source: AMsMyM44kzfSkPxbszkiAjOC0w2L4uGcFTs6UI4Ny+kb5nksORGHCUXx/pqTTQj6iQZqPiBHCtONoKIRlZwvnZpGSxJLYTIeXjDi MIME-Version: 1.0 X-Received: by 2002:a02:cb92:0:b0:358:3b30:7d44 with SMTP id u18-20020a02cb92000000b003583b307d44mr6572530jap.319.1664634460243; Sat, 01 Oct 2022 07:27:40 -0700 (PDT) Date: Sat, 01 Oct 2022 07:27:40 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000af0c0105e9f9e966@google.com> Subject: [syzbot] KASAN: slab-out-of-bounds Read in ntfs_fill_super From: syzbot To: anton@tuxera.com, linux-kernel@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: ffb4d94b4314 Merge tag 'drm-fixes-2022-10-01' of git://ano.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13212ee0880000 kernel config: https://syzkaller.appspot.com/x/.config?x=755695d26ad09807 dashboard link: https://syzkaller.appspot.com/bug?extid=bd6d0c83fe8442ad6ef5 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/f626c46d9422/disk-ffb4d94b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/9140d7085b55/vmlinux-ffb4d94b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+bd6d0c83fe8442ad6ef5@syzkaller.appspotmail.com loop1: detected capacity change from 0 to 4096 ================================================================== BUG: KASAN: slab-out-of-bounds in load_system_files fs/ntfs/super.c:1833 [inline] BUG: KASAN: slab-out-of-bounds in ntfs_fill_super+0x7317/0x92d0 fs/ntfs/super.c:2892 Read of size 1 at addr ffff88802baf332a by task syz-executor.1/14735 CPU: 0 PID: 14735 Comm: syz-executor.1 Not tainted 6.0.0-rc7-syzkaller-00220-gffb4d94b4314 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:317 [inline] print_report.cold+0x2ba/0x719 mm/kasan/report.c:433 kasan_report+0xb1/0x1e0 mm/kasan/report.c:495 load_system_files fs/ntfs/super.c:1833 [inline] ntfs_fill_super+0x7317/0x92d0 fs/ntfs/super.c:2892 mount_bdev+0x34d/0x410 fs/super.c:1400 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1530 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1326/0x1e20 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7b1608bada Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7b17226f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f7b1608bada RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7b17226fe0 RBP: 00007f7b17227020 R08: 00007f7b17227020 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f7b17226fe0 R15: 0000000020076700 Allocated by task 10867: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:437 [inline] __kasan_slab_alloc+0x90/0xc0 mm/kasan/common.c:470 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:727 [inline] slab_alloc_node mm/slub.c:3248 [inline] slab_alloc mm/slub.c:3256 [inline] __kmem_cache_alloc_lru mm/slub.c:3263 [inline] kmem_cache_alloc_lru+0x255/0x720 mm/slub.c:3280 alloc_inode_sb include/linux/fs.h:3103 [inline] nilfs_alloc_inode+0x24/0x150 fs/nilfs2/super.c:154 alloc_inode+0x61/0x230 fs/inode.c:260 iget5_locked fs/inode.c:1242 [inline] iget5_locked+0x1cb/0x2c0 fs/inode.c:1235 nilfs_iget_locked+0xa0/0xd0 fs/nilfs2/inode.c:588 nilfs_ifile_read+0x2c/0x1a0 fs/nilfs2/ifile.c:187 nilfs_attach_checkpoint+0x258/0x4b0 fs/nilfs2/super.c:541 nilfs_fill_super fs/nilfs2/super.c:1064 [inline] nilfs_mount+0xb12/0xfb0 fs/nilfs2/super.c:1317 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1530 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1326/0x1e20 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Last potentially related work creation: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 __kasan_record_aux_stack+0xbe/0xd0 mm/kasan/generic.c:348 call_rcu+0x99/0x790 kernel/rcu/tree.c:2793 destroy_inode+0x129/0x1b0 fs/inode.c:315 iput_final fs/inode.c:1748 [inline] iput.part.0+0x55d/0x810 fs/inode.c:1774 iput+0x58/0x70 fs/inode.c:1764 nilfs_put_super+0xac/0x1a0 fs/nilfs2/super.c:476 generic_shutdown_super+0x14c/0x400 fs/super.c:491 kill_block_super+0x97/0xf0 fs/super.c:1427 deactivate_locked_super+0x94/0x160 fs/super.c:332 deactivate_super+0xad/0xd0 fs/super.c:363 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1186 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd Second to last potentially related work creation: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 __kasan_record_aux_stack+0xbe/0xd0 mm/kasan/generic.c:348 call_rcu+0x99/0x790 kernel/rcu/tree.c:2793 destroy_inode+0x129/0x1b0 fs/inode.c:315 iput_final fs/inode.c:1748 [inline] iput.part.0+0x55d/0x810 fs/inode.c:1774 iput+0x58/0x70 fs/inode.c:1764 nilfs_put_super+0xac/0x1a0 fs/nilfs2/super.c:476 generic_shutdown_super+0x14c/0x400 fs/super.c:491 kill_block_super+0x97/0xf0 fs/super.c:1427 deactivate_locked_super+0x94/0x160 fs/super.c:332 deactivate_super+0xad/0xd0 fs/super.c:363 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1186 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88802baf2cd8 which belongs to the cache nilfs2_inode_cache of size 1512 The buggy address is located 106 bytes to the right of 1512-byte region [ffff88802baf2cd8, ffff88802baf32c0) The buggy address belongs to the physical page: page:ffffea0000aebc00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2baf0 head:ffffea0000aebc00 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff8880493ca901 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 dead000000000100 dead000000000122 ffff888018a8aa00 raw: 0000000000000000 0000000000130013 00000001ffffffff ffff8880493ca901 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 644, tgid 643 (syz-executor.4), ts 2331907861767, free_ts 2317024789889 prep_new_page mm/page_alloc.c:2532 [inline] get_page_from_freelist+0x109b/0x2ce0 mm/page_alloc.c:4283 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5549 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:1829 [inline] allocate_slab+0x27e/0x3d0 mm/slub.c:1974 new_slab mm/slub.c:2034 [inline] ___slab_alloc+0x7f1/0xe10 mm/slub.c:3036 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3123 slab_alloc_node mm/slub.c:3214 [inline] slab_alloc mm/slub.c:3256 [inline] __kmem_cache_alloc_lru mm/slub.c:3263 [inline] kmem_cache_alloc_lru+0x528/0x720 mm/slub.c:3280 alloc_inode_sb include/linux/fs.h:3103 [inline] nilfs_alloc_inode+0x24/0x150 fs/nilfs2/super.c:154 alloc_inode+0x61/0x230 fs/inode.c:260 iget5_locked fs/inode.c:1242 [inline] iget5_locked+0x1cb/0x2c0 fs/inode.c:1235 nilfs_iget_locked+0xa0/0xd0 fs/nilfs2/inode.c:588 nilfs_cpfile_read+0x83/0x1f0 fs/nilfs2/cpfile.c:991 nilfs_load_super_root fs/nilfs2/the_nilfs.c:125 [inline] load_nilfs+0x48b/0x1330 fs/nilfs2/the_nilfs.c:269 nilfs_fill_super fs/nilfs2/super.c:1059 [inline] nilfs_mount+0xa9a/0xfb0 fs/nilfs2/super.c:1317 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1530 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1449 [inline] free_pcp_prepare+0x5e4/0xd20 mm/page_alloc.c:1499 free_unref_page_prepare mm/page_alloc.c:3380 [inline] free_unref_page+0x19/0x4d0 mm/page_alloc.c:3476 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:447 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:727 [inline] slab_alloc_node mm/slub.c:3248 [inline] slab_alloc mm/slub.c:3256 [inline] __kmem_cache_alloc_lru mm/slub.c:3263 [inline] kmem_cache_alloc+0x267/0x3b0 mm/slub.c:3273 getname_flags.part.0+0x50/0x4f0 fs/namei.c:139 getname_flags+0x9a/0xe0 include/linux/audit.h:320 user_path_at_empty+0x2b/0x60 fs/namei.c:2875 user_path_at include/linux/namei.h:57 [inline] __do_sys_chdir fs/open.c:514 [inline] __se_sys_chdir fs/open.c:508 [inline] __x64_sys_chdir+0xb7/0x260 fs/open.c:508 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88802baf3200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802baf3280: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc >ffff88802baf3300: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ^ ffff88802baf3380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802baf3400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== --- 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.