From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (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 2FF0313BAD5 for ; Mon, 11 Nov 2024 09:46:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731318387; cv=none; b=hXfDPepGsffnKDhhKHKykBu4+3DKW22R597PkYedOBidmhT2svNELa8F2eZxRrbIQxai2UjTnKriZe4HfXOd0CRqhb2Qa8f0NFxChC7BPUU3TFDjZeGEfkzD5kZ6smAKPmt/9SfUyep+hoQWhL5YqFHVauQ7ukKJhiuCua7SUwo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731318387; c=relaxed/simple; bh=IcdsDmh4lFp0GgeUIjd3e1pf0wxJazod891NpMGBnGw=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=iClWvMKrcEHhziPKHzZeC2OZMzqJZozAXr7P1Bn+ZaBzaaCjf9Z1FECzVlAyhwYiuBKSK+COxZpX3BRHhhwEvZicCjJqduw+H4UZuOUIigpDKd8RcCwD8uijDnC6HjqJx33gxoUlj24D22902yFGIP9/pZjGnDs50eN0khcFLFY= 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=209.85.166.197 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-f197.google.com with SMTP id e9e14a558f8ab-3a3c9886eccso52760925ab.2 for ; Mon, 11 Nov 2024 01:46:25 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731318385; x=1731923185; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=foIUVhk7FPWeE6KKNZvbhWrSDgh7muMDD0HRvNyKrL0=; b=dpp/f39iyi07KTwWgL91wBU31rZhjDfNghJSNxvRKQZ70KSvyWE84/CvgfhuSJyvTc C1Vzn9OM1bG6ACUYzg8KZfeGlChLJYOCzjrqZnWDBmrCeBO0CGWre2kzQyss0p4oIuRU 8V97LfCl6N0n3RIlC8Pv/LQGaMA/XSn+hVtI8Cp0M01tG+/C/7OfgBBeQnX47brwFkx6 cu7mbifRnWjn6UhIedgUs4SHd++a33g9DZTo/z5tdWmnSO7s6qdfLIJIhc/Ae9/VRlQ0 Xhhy+nvQEXQwdVOeZUW8pK1LAcks5nTG1FS0/NQap2pPqi3Jp3MB/5uJwzCG3iR+q8h+ uiRQ== X-Forwarded-Encrypted: i=1; AJvYcCVBOyGrdyat61VjIXdHtqC3sziNV/4SUE3oIU+Laq/ZQQz5pojP5rObHdqajOB/Enf2hRWvs6PWCiN3WIY=@vger.kernel.org X-Gm-Message-State: AOJu0YzeVsq8ZfblyBNmxRHZV//3RA1ii1XjgB3X3xh6weUdqIrd4l04 VGw6uBFHs9qEAyc12D7AyFZs46vYKpeAeU4x/5CQCMYm2JsVETP/rWHH4Wq+zHDhe5juzPwPwpx U+pK00BWLKg1nuRuAh/NOJPowXbfHS6eJiMODUMdDRlF4yWcLAmF0Af8= X-Google-Smtp-Source: AGHT+IGCNRFOH/at0VfaBcw2KbhCiaj1vzUSgrOlp4Li5ow21+4StNBhRoa4kpQrIhUCVIXNgL6Xh7osxpS7LtV92NhG/CkxCEbu Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1789:b0:3a0:a070:b81 with SMTP id e9e14a558f8ab-3a6f1a59322mr108957395ab.23.1731318383710; Mon, 11 Nov 2024 01:46:23 -0800 (PST) Date: Mon, 11 Nov 2024 01:46:23 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6731d26f.050a0220.1fb99c.014b.GAE@google.com> Subject: [syzbot] [ocfs2?] KASAN: slab-use-after-free Read in ocfs2_lock_global_qf From: syzbot To: jlbec@evilplan.org, joseph.qi@linux.alibaba.com, linux-kernel@vger.kernel.org, mark@fasheh.com, ocfs2-devel@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: c2ee9f594da8 KVM: selftests: Fix build on on non-x86 archi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17bfcc30580000 kernel config: https://syzkaller.appspot.com/x/.config?x=41330fd2db03893d dashboard link: https://syzkaller.appspot.com/bug?extid=d173bf8a5a7faeede34c 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/d116f71ad0eb/disk-c2ee9f59.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/bdd6f545b105/vmlinux-c2ee9f59.xz kernel image: https://storage.googleapis.com/syzbot-assets/0d26b05e3d7c/bzImage-c2ee9f59.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d173bf8a5a7faeede34c@syzkaller.appspotmail.com ================================================================== BUG: KASAN: slab-use-after-free in ocfs2_lock_global_qf+0xb8/0x2b0 fs/ocfs2/quota_global.c:303 Read of size 8 at addr ffff88805fc78028 by task syz.3.122/6441 CPU: 1 UID: 0 PID: 6441 Comm: syz.3.122 Not tainted 6.12.0-rc4-syzkaller-00047-gc2ee9f594da8 #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:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 ocfs2_lock_global_qf+0xb8/0x2b0 fs/ocfs2/quota_global.c:303 ocfs2_get_next_id+0x233/0x760 fs/ocfs2/quota_global.c:900 dquot_get_next_dqblk+0x73/0x3a0 fs/quota/dquot.c:2701 quota_getnextquota+0x2c5/0x6c0 fs/quota/quota.c:250 __do_sys_quotactl fs/quota/quota.c:961 [inline] __se_sys_quotactl+0x2c4/0xa30 fs/quota/quota.c:917 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: 0033:0x7f89ffd7dff9 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:00007f8a00b48038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f89fff35f80 RCX: 00007f89ffd7dff9 RDX: 0000000000000000 RSI: 0000000020000c80 RDI: ffffffff80000900 RBP: 00007f89ffdf0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f89fff35f80 R15: 00007fff22979a58 Allocated by task 6441: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:257 [inline] __kmalloc_cache_noprof+0x19c/0x2c0 mm/slub.c:4295 kmalloc_noprof include/linux/slab.h:878 [inline] ocfs2_local_read_info+0x1ee/0x19f0 fs/ocfs2/quota_local.c:699 dquot_load_quota_sb+0x762/0xbb0 fs/quota/dquot.c:2458 dquot_load_quota_inode+0x320/0x600 fs/quota/dquot.c:2495 ocfs2_enable_quotas+0x169/0x450 fs/ocfs2/super.c:926 ocfs2_fill_super+0x4c8d/0x5750 fs/ocfs2/super.c:1141 mount_bdev+0x20a/0x2d0 fs/super.c:1679 legacy_get_tree+0xee/0x190 fs/fs_context.c:662 vfs_get_tree+0x90/0x2b0 fs/super.c:1800 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034 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 6441: 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:579 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:230 [inline] slab_free_hook mm/slub.c:2342 [inline] slab_free mm/slub.c:4579 [inline] kfree+0x1a0/0x440 mm/slub.c:4727 ocfs2_local_free_info+0x81f/0x9a0 fs/ocfs2/quota_local.c:869 dquot_disable+0x1160/0x1cd0 fs/quota/dquot.c:2303 dquot_suspend include/linux/quotaops.h:85 [inline] ocfs2_susp_quotas+0x16c/0x340 fs/ocfs2/super.c:892 ocfs2_remount+0x576/0xc30 fs/ocfs2/super.c:647 reconfigure_super+0x445/0x880 fs/super.c:1083 do_remount fs/namespace.c:3047 [inline] path_mount+0xc22/0xfa0 fs/namespace.c:3826 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034 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 ffff88805fc78000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 40 bytes inside of freed 1024-byte region [ffff88805fc78000, ffff88805fc78400) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5fc78 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff88801ac41dc0 ffffea0001e51c00 dead000000000002 raw: 0000000000000000 0000000000100010 00000001f5000000 0000000000000000 head: 00fff00000000040 ffff88801ac41dc0 ffffea0001e51c00 dead000000000002 head: 0000000000000000 0000000000100010 00000001f5000000 0000000000000000 head: 00fff00000000003 ffffea00017f1e01 ffffffffffffffff 0000000000000000 head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5289, tgid 5289 (kworker/u8:8), ts 91435154744, free_ts 91399801248 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1545 [inline] get_page_from_freelist+0x3039/0x3180 mm/page_alloc.c:3457 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4733 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 alloc_slab_page+0x6a/0x120 mm/slub.c:2412 allocate_slab+0x5a/0x2f0 mm/slub.c:2578 new_slab mm/slub.c:2631 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818 __slab_alloc+0x58/0xa0 mm/slub.c:3908 __slab_alloc_node mm/slub.c:3961 [inline] slab_alloc_node mm/slub.c:4122 [inline] __do_kmalloc_node mm/slub.c:4263 [inline] __kmalloc_noprof+0x25a/0x400 mm/slub.c:4276 kmalloc_noprof include/linux/slab.h:882 [inline] kzalloc_noprof include/linux/slab.h:1014 [inline] ieee802_11_parse_elems_full+0xdb/0x2880 net/mac80211/parse.c:958 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2383 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2390 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1575 [inline] ieee80211_ibss_rx_queued_mgmt+0x4c8/0x2d70 net/mac80211/ibss.c:1606 ieee80211_iface_process_skb net/mac80211/iface.c:1603 [inline] ieee80211_iface_work+0x8a5/0xf20 net/mac80211/iface.c:1657 cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 page last free pid 5574 tgid 5574 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1108 [inline] free_unref_page+0xcd0/0xf00 mm/page_alloc.c:2638 discard_slab mm/slub.c:2677 [inline] __put_partials+0xeb/0x130 mm/slub.c:3145 put_cpu_partial+0x17c/0x250 mm/slub.c:3220 __slab_free+0x2ea/0x3d0 mm/slub.c:4449 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:247 [inline] slab_post_alloc_hook mm/slub.c:4085 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4141 getname_flags+0xb7/0x540 fs/namei.c:139 user_path_at+0x24/0x60 fs/namei.c:3015 do_faccessat+0x5e2/0xb80 fs/open.c:493 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 Memory state around the buggy address: ffff88805fc77f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88805fc77f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88805fc78000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88805fc78080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805fc78100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== --- 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