From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f206.google.com (mail-il1-f206.google.com [209.85.166.206]) (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 AEDB6184E for ; Thu, 2 Jan 2025 02:02:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.206 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735783350; cv=none; b=otZSrbzwTtfQRjqxNQFLWdjZF11MjmzobZgblBF8AYhmFy55lqBkFOEauqoXX7ZcUOdWigbmbLCZT5JhAZYoCU6nd6AKfqiteZ2gX3gRtZn+9nQFpQf6qG0/kxFtRCtTsFOXf6D4c1xx/p2p6UHSlP3OOgkV5awc6Mi1Az5JCZw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735783350; c=relaxed/simple; bh=VOzN3tFLrH6la8GTh8ZtlnnEitoXtYzyxVaH1dF2tKA=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=SjQht1MErYVvuh3smyJp21uJAPJuveYz8d7CElP8oVJz2iHrk6JEijZUo5e6o8R3tGzqXU0sxLJ8lqOVsbUZlDMqYu5KuXNl5LsrmLXxOZYjEQ/XNLJ4XrCJk+htnSWwCPZtzGZfsQpCMPEDEvHXuYqlHkx6OsSrizLybCVziP8= 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=209.85.166.206 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-f206.google.com with SMTP id e9e14a558f8ab-3a9d075bdc3so196692275ab.3 for ; Wed, 01 Jan 2025 18:02:26 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1735783346; x=1736388146; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=RfW8zze1+y/8R/I8IkwTzlqu6P+WRxpcjOvQJzyeR24=; b=nBJjhcygcS/++dJVlUTDT8smQLyRls4O9H5UQY5NcTDmrabRN0aogyqf04uLSj+Cgl dXUfdYf/QiESeYi3AXo1lSccGwaop3uG1zSe0ygRfX4voturpMmTesp2yly8MkFrWfvR T1AZ+C0zEaPPNVa5g6lsOsXjJTbBSoPFpF01lY7Pn+SXPy7h08cMRwGB8b/VOKNuY3kj 47vSMHfdGGv5kmaTqjitoGDzU8H+pLGkPLsA3RiG0wUENOYTVyiLbdh6VXRREGjO8KaK v3RIj7xVIb0VIH6QG30c4rzilyAOFYJg9Hv1CULeN7CRaR8zw0kjaE82boffhkLttCrw MUlA== X-Forwarded-Encrypted: i=1; AJvYcCVfiexHLZ0JuNYa25xGKvYC/vJ9MEJwv54OGT6ocBWX2CWjco0WQ1lx35dThl11aBAAXNAIfHpp2dBRUBM=@vger.kernel.org X-Gm-Message-State: AOJu0YyouY9wQHE8175fBE5gyHO1HTqTkaok4T6K+duF9exzG4HK8Gkg pcTGBaI1wS+u3CavIBqcwAHVfgIXlIiY3t3ptsBpEeWaMQMQe1BSAgzPI3HX0wwFc/TcRE0A7Mh t1UVAsI3S7rJOlbDOiLJUjl587E1UCEkaqSjU1m1d1MVcZlgXRfk63FA= X-Google-Smtp-Source: AGHT+IGs5bD/psaiXZk0WeDjUrHibOLcp1DI4uaj3dU6NiISfDd3jTXArshcbqYNGImtjb0yk1iXyQt8VtnRHJRTW62wxu3CvWCX Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3203:b0:3a7:3760:7314 with SMTP id e9e14a558f8ab-3c2d5b37841mr444742555ab.20.1735783345755; Wed, 01 Jan 2025 18:02:25 -0800 (PST) Date: Wed, 01 Jan 2025 18:02:25 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6775f3b1.050a0220.3a8527.0032.GAE@google.com> Subject: [syzbot] [jfs?] KASAN: slab-use-after-free Read in jfs_readdir 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" Hello, syzbot found the following issue on: HEAD commit: 56e6a3499e14 Merge tag 'trace-v6.13-rc5' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=113c66c4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=ba7cde9482d6bb6 dashboard link: https://syzkaller.appspot.com/bug?extid=a98891ce2318fe7baf05 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/e5f33d8e3542/disk-56e6a349.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/b53906ddb840/vmlinux-56e6a349.xz kernel image: https://storage.googleapis.com/syzbot-assets/115963cd9410/bzImage-56e6a349.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a98891ce2318fe7baf05@syzkaller.appspotmail.com ================================================================== BUG: KASAN: slab-use-after-free in jfs_readdir+0x1361/0x3c50 fs/jfs/jfs_dtree.c:2869 Read of size 8 at addr ffff8880789a98e8 by task syz.4.9/5973 CPU: 0 UID: 0 PID: 5973 Comm: syz.4.9 Not tainted 6.13.0-rc5-syzkaller-00006-g56e6a3499e14 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x169/0x550 mm/kasan/report.c:489 kasan_report+0x143/0x180 mm/kasan/report.c:602 jfs_readdir+0x1361/0x3c50 fs/jfs/jfs_dtree.c:2869 wrap_directory_iterator+0x91/0xd0 fs/readdir.c:65 iterate_dir+0x571/0x800 fs/readdir.c:108 __do_sys_getdents fs/readdir.c:322 [inline] __se_sys_getdents+0x1fd/0x4e0 fs/readdir.c:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8953585d29 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8954358038 EFLAGS: 00000246 ORIG_RAX: 000000000000004e RAX: ffffffffffffffda RBX: 00007f8953776080 RCX: 00007f8953585d29 RDX: 0000000000000091 RSI: 0000000020000340 RDI: 0000000000000009 RBP: 00007f8953601b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8953776080 R15: 00007ffdd835e388 Allocated by task 5973: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4175 mempool_alloc_noprof+0x197/0x5a0 mm/mempool.c:402 alloc_metapage fs/jfs/jfs_metapage.c:182 [inline] __get_metapage+0x5f4/0xdc0 fs/jfs/jfs_metapage.c:652 dtReadFirst+0xe0/0xc50 fs/jfs/jfs_dtree.c:3066 dtReadNext fs/jfs/jfs_dtree.c:3147 [inline] jfs_readdir+0x9aa/0x3c50 fs/jfs/jfs_dtree.c:2862 wrap_directory_iterator+0x91/0xd0 fs/readdir.c:65 iterate_dir+0x571/0x800 fs/readdir.c:108 __do_sys_getdents fs/readdir.c:322 [inline] __se_sys_getdents+0x1fd/0x4e0 fs/readdir.c:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 5973: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:582 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2353 [inline] slab_free mm/slub.c:4613 [inline] kmem_cache_free+0x195/0x410 mm/slub.c:4715 free_metapage fs/jfs/jfs_metapage.c:197 [inline] drop_metapage fs/jfs/jfs_metapage.c:234 [inline] release_metapage+0x831/0xa90 fs/jfs/jfs_metapage.c:784 dtReadNext fs/jfs/jfs_dtree.c:3189 [inline] jfs_readdir+0x102d/0x3c50 fs/jfs/jfs_dtree.c:2862 wrap_directory_iterator+0x91/0xd0 fs/readdir.c:65 iterate_dir+0x571/0x800 fs/readdir.c:108 __do_sys_getdents fs/readdir.c:322 [inline] __se_sys_getdents+0x1fd/0x4e0 fs/readdir.c:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff8880789a98b8 which belongs to the cache jfs_mp of size 184 The buggy address is located 48 bytes inside of freed 184-byte region [ffff8880789a98b8, ffff8880789a9970) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x789a9 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000000 ffff88801db13000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080100010 00000001f5000000 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5819, tgid 5819 (syz-executor), ts 67350549441, free_ts 67338177030 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1558 prep_new_page mm/page_alloc.c:1566 [inline] get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3476 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2269 alloc_slab_page+0x6a/0x110 mm/slub.c:2423 allocate_slab+0x5a/0x2b0 mm/slub.c:2589 new_slab mm/slub.c:2642 [inline] ___slab_alloc+0xc27/0x14a0 mm/slub.c:3830 __slab_alloc+0x58/0xa0 mm/slub.c:3920 __slab_alloc_node mm/slub.c:3995 [inline] slab_alloc_node mm/slub.c:4156 [inline] kmem_cache_alloc_noprof+0x268/0x380 mm/slub.c:4175 mempool_alloc_noprof+0x197/0x5a0 mm/mempool.c:402 alloc_metapage fs/jfs/jfs_metapage.c:182 [inline] __get_metapage+0x5f4/0xdc0 fs/jfs/jfs_metapage.c:652 diSync+0xc6/0x6e0 fs/jfs/jfs_imap.c:216 diUnmount+0xc7/0x130 fs/jfs/jfs_imap.c:185 jfs_umount+0x186/0x3a0 fs/jfs/jfs_umount.c:63 jfs_put_super+0x8a/0x190 fs/jfs/super.c:194 generic_shutdown_super+0x139/0x2d0 fs/super.c:642 page last free pid 8 tgid 8 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_page+0xd2c/0x1000 mm/page_alloc.c:2659 vfree+0x1c3/0x360 mm/vmalloc.c:3383 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3303 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff8880789a9780: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ffff8880789a9800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc >ffff8880789a9880: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb ^ ffff8880789a9900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc ffff8880789a9980: 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 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