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 469B0C433FE for ; Sat, 1 Oct 2022 13:41:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229566AbiJANlv (ORCPT ); Sat, 1 Oct 2022 09:41:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46190 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229497AbiJANln (ORCPT ); Sat, 1 Oct 2022 09:41:43 -0400 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 47D1B89837 for ; Sat, 1 Oct 2022 06:41:33 -0700 (PDT) Received: by mail-io1-f69.google.com with SMTP id f25-20020a5d8799000000b006a44e33ddb6so4416468ion.1 for ; Sat, 01 Oct 2022 06:41:33 -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=5Q2cWNKH4sd/qj6n/jFbXU9YjN2seqHt+yDGrJVAiLM=; b=v8hy3SpxgYXX/PWpIYmZdXhVGdkIKyQh6VCISwNYf0DxXshDPxSuGHNwZZJrYYY9WR dHX7ETfR7NHPzeIRl6cKm1P74ekSdGGJUVmF+S/mk7351tEjL97ey8A9ckbfOOfkItjg +e033kTsb4blRUwZpeA4sO96MSudNxzMERsElwoj+Lti825E0eqf8Mfzs3vjHbpP9Zbi Awz5O6UB/xW6gyug9g6lF1R8FhKbkfFMsvNAE1t4ZmSLIgsRdYg0QCE6vVj52lo0L3pu Dn1tvF1LKGkC5DS4bj5+IE6kRiK+HvdJYc802KwzxpN9hDc9HYkNp+4IrvashqPT2BCZ QHqQ== X-Gm-Message-State: ACrzQf0Wfbb1mqQEb/4luACwAw3k2KgWkA7E16uEqmrAWDpGV6W/3HsL QrOm26XYkMjGRD5aYV7DsZsJ4rE4AUYInAaotfDD2klifwyW X-Google-Smtp-Source: AMsMyM7DWcnzh+noBoBqu0kX185mLIlP3lUzLE65RpAAI4bbuJPZxtn6X+Ot3ATxdxi41vySdGX8avnmo3sCNo2kYlJQ2g9LXvp6 MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1d0e:b0:2f9:7742:173c with SMTP id i14-20020a056e021d0e00b002f97742173cmr2033804ila.49.1664631692690; Sat, 01 Oct 2022 06:41:32 -0700 (PDT) Date: Sat, 01 Oct 2022 06:41:32 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b98bb905e9f944ef@google.com> Subject: [syzbot] KASAN: slab-out-of-bounds Read in hex_dump_to_buffer From: syzbot To: jfs-discussion@lists.sourceforge.net, linux-kernel@vger.kernel.org, shaggy@kernel.org, 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: aaa11ce2ffc8 Add linux-next specific files for 20220923 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1773ecb8880000 kernel config: https://syzkaller.appspot.com/x/.config?x=186d1ff305f10294 dashboard link: https://syzkaller.appspot.com/bug?extid=489783e0c22fbb27d8e9 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/95c7bf83c07e/disk-aaa11ce2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/b161cd56a7a3/vmlinux-aaa11ce2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+489783e0c22fbb27d8e9@syzkaller.appspotmail.com ffff8880a5a1c930: 28 c9 a1 a5 80 88 ff ff 00 00 00 00 00 00 00 00 (............... ffff8880a5a1c940: 40 c9 a1 a5 80 88 ff ff 40 c9 a1 a5 80 88 ff ff @.......@....... ffff8880a5a1c950: 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 ................ ffff8880a5a1c960: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ffff8880a5a1c970: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ================================================================== BUG: KASAN: slab-out-of-bounds in hex_dump_to_buffer+0xdc1/0xdf0 lib/hexdump.c:193 Read of size 1 at addr ffff8880a5a1c980 by task syz-executor.0/21885 CPU: 1 PID: 21885 Comm: syz-executor.0 Not tainted 6.0.0-rc6-next-20220923-syzkaller #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:284 [inline] print_report+0x15e/0x45d mm/kasan/report.c:395 kasan_report+0xbb/0x1f0 mm/kasan/report.c:495 hex_dump_to_buffer+0xdc1/0xdf0 lib/hexdump.c:193 print_hex_dump+0x12f/0x1d0 lib/hexdump.c:276 ea_get.cold+0xaa/0x197 fs/jfs/xattr.c:561 __jfs_setxattr+0xdb/0xfc0 fs/jfs/xattr.c:671 __jfs_xattr_set+0xc9/0x150 fs/jfs/xattr.c:917 __vfs_setxattr+0x115/0x180 fs/xattr.c:182 __vfs_setxattr_noperm+0x125/0x5f0 fs/xattr.c:216 __vfs_setxattr_locked+0x1cf/0x260 fs/xattr.c:277 vfs_setxattr+0x13f/0x330 fs/xattr.c:309 setxattr+0x146/0x160 fs/xattr.c:617 path_setxattr+0x197/0x1c0 fs/xattr.c:636 __do_sys_lsetxattr fs/xattr.c:659 [inline] __se_sys_lsetxattr fs/xattr.c:655 [inline] __x64_sys_lsetxattr+0xbd/0x150 fs/xattr.c:655 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: 0033:0x7f56a6e8a5a9 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 ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f56a800f168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 00007f56a6fabf80 RCX: 00007f56a6e8a5a9 RDX: 0000000020005280 RSI: 0000000020000180 RDI: 0000000020000140 RBP: 00007f56a6ee5580 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000016 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe8902fcff R14: 00007f56a800f300 R15: 0000000000022000 Allocated by task 21885: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45 kasan_set_track+0x21/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x7e/0x80 mm/kasan/common.c:325 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:754 [inline] slab_alloc_node mm/slub.c:3336 [inline] slab_alloc mm/slub.c:3344 [inline] __kmem_cache_alloc_lru mm/slub.c:3351 [inline] kmem_cache_alloc_lru+0x255/0x730 mm/slub.c:3367 alloc_inode_sb include/linux/fs.h:3106 [inline] jfs_alloc_inode+0x23/0x60 fs/jfs/super.c:105 alloc_inode+0x61/0x230 fs/inode.c:259 iget_locked+0x1b7/0x6f0 fs/inode.c:1286 jfs_iget+0x1a/0x4d0 fs/jfs/inode.c:29 jfs_lookup+0x246/0x2f0 fs/jfs/namei.c:1462 __lookup_slow+0x24c/0x460 fs/namei.c:1685 lookup_slow fs/namei.c:1702 [inline] walk_component+0x33f/0x5a0 fs/namei.c:1993 lookup_last fs/namei.c:2450 [inline] path_lookupat+0x1ba/0x840 fs/namei.c:2474 filename_lookup+0x1ce/0x590 fs/namei.c:2503 user_path_at_empty+0x42/0x60 fs/namei.c:2876 user_path_at include/linux/namei.h:57 [inline] do_mount fs/namespace.c:3380 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x1ea/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:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:481 call_rcu+0x99/0x820 kernel/rcu/tree.c:2796 destroy_inode+0x129/0x1b0 fs/inode.c:314 iput_final fs/inode.c:1747 [inline] iput.part.0+0x59b/0x880 fs/inode.c:1773 iput+0x58/0x70 fs/inode.c:1763 diFreeSpecial+0x73/0x100 fs/jfs/jfs_imap.c:548 jfs_umount+0x130/0x3f0 fs/jfs/jfs_umount.c:65 jfs_put_super+0x81/0x190 fs/jfs/super.c:194 generic_shutdown_super+0x154/0x410 fs/super.c:491 kill_block_super+0x97/0xf0 fs/super.c:1427 deactivate_locked_super+0x94/0x160 fs/super.c:331 deactivate_super+0xad/0xd0 fs/super.c:362 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1186 task_work_run+0x16b/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296 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:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:481 call_rcu+0x99/0x820 kernel/rcu/tree.c:2796 destroy_inode+0x129/0x1b0 fs/inode.c:314 iput_final fs/inode.c:1747 [inline] iput.part.0+0x59b/0x880 fs/inode.c:1773 iput+0x58/0x70 fs/inode.c:1763 jfs_put_super+0x152/0x190 fs/jfs/super.c:201 generic_shutdown_super+0x154/0x410 fs/super.c:491 kill_block_super+0x97/0xf0 fs/super.c:1427 deactivate_locked_super+0x94/0x160 fs/super.c:331 deactivate_super+0xad/0xd0 fs/super.c:362 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1186 task_work_run+0x16b/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296 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 ffff8880a5a1c0c0 which belongs to the cache jfs_ip of size 2240 The buggy address is located 0 bytes to the right of 2240-byte region [ffff8880a5a1c0c0, ffff8880a5a1c980) The buggy address belongs to the physical page: page:ffffea0002968600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffffea0002771e00 pfn:0xa5a18 head:ffffea0002968600 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff888027fc6101 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff88801ba46b40 dead0000800d000d 0000000000000000 raw: ffffea0002771e00 dead000000000003 00000001ffffffff ffff888027fc6101 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 15578, tgid 15577 (syz-executor.1), ts 741966923770, free_ts 738328900782 prep_new_page mm/page_alloc.c:2538 [inline] get_page_from_freelist+0x1092/0x2d20 mm/page_alloc.c:4287 __alloc_pages+0x1c7/0x5a0 mm/page_alloc.c:5546 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2280 alloc_slab_page mm/slub.c:1739 [inline] allocate_slab+0x213/0x300 mm/slub.c:1884 new_slab mm/slub.c:1937 [inline] ___slab_alloc+0xac1/0x1430 mm/slub.c:3119 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3217 slab_alloc_node mm/slub.c:3302 [inline] slab_alloc mm/slub.c:3344 [inline] __kmem_cache_alloc_lru mm/slub.c:3351 [inline] kmem_cache_alloc_lru+0x4aa/0x730 mm/slub.c:3367 alloc_inode_sb include/linux/fs.h:3106 [inline] jfs_alloc_inode+0x23/0x60 fs/jfs/super.c:105 alloc_inode+0x61/0x230 fs/inode.c:259 new_inode_pseudo fs/inode.c:1018 [inline] new_inode+0x27/0x270 fs/inode.c:1046 diReadSpecial+0x4f/0x6d0 fs/jfs/jfs_imap.c:422 jfs_mount+0x1da/0x7b0 fs/jfs/jfs_mount.c:108 jfs_fill_super+0x5a4/0xc70 fs/jfs/super.c:556 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 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1458 [inline] free_pcp_prepare+0x65c/0xd90 mm/page_alloc.c:1508 free_unref_page_prepare mm/page_alloc.c:3386 [inline] free_unref_page+0x19/0x4d0 mm/page_alloc.c:3482 __unfreeze_partials+0x17c/0x1a0 mm/slub.c:2532 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+0x62/0x80 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:754 [inline] slab_alloc_node mm/slub.c:3336 [inline] slab_alloc mm/slub.c:3344 [inline] __kmem_cache_alloc_lru mm/slub.c:3351 [inline] kmem_cache_alloc+0x2b7/0x3d0 mm/slub.c:3360 getname_flags.part.0+0x50/0x4f0 fs/namei.c:139 getname_flags include/linux/audit.h:320 [inline] getname+0x8e/0xd0 fs/namei.c:218 do_sys_openat2+0xf5/0x4c0 fs/open.c:1304 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1337 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: ffff8880a5a1c880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880a5a1c900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880a5a1c980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8880a5a1ca00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880a5a1ca80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== --- This report is generated by a bot. 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