From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f207.google.com (mail-il1-f207.google.com [209.85.166.207]) (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 ECFC71DF97F for ; Sun, 20 Jul 2025 14:32:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753021958; cv=none; b=p+qADu8Pc19eQXH0kAdKApvciK6eCKDwB7YzqCRNg2c0jiyGciYGmbsQdEmOAo5x6PXmHDk0x6q8QzSdPiV1KyRNAf5n939liripUpm6hxSzuBqzLfpxetaksZ2OnZtSvedGEY7leAcSrUrWKyyi4rA41d50ZkC68SxBry/ZLwY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753021958; c=relaxed/simple; bh=fcotWFUbAA3L1KK6Gpc3Kmhs2lMWl4H9cpJ6Rtm6Cg4=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=KbXFYCnI1rPWPm6SXGwtOupHAqBVSALHlkhAnvu3r01juEKR9myXO7slg9+ndM73U9Oe7yiaI2DsSdoMOOWybb/kKFd1CnNV8tkorU+4kRpxM63C0DR91+1HOLWdQFUW8jCBSY0MBkbfCR9JwlWTkmOHfOv8suwqi4Ubc6W+bIM= 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=209.85.166.207 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-f207.google.com with SMTP id e9e14a558f8ab-3e05997f731so73755765ab.3 for ; Sun, 20 Jul 2025 07:32:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753021955; x=1753626755; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=I1jcLm+5ivfDCOsHgxaG1ojL+45sBPnm8iB5q9AJr70=; b=os5xBc80EfBrhe22lliXMdl7zYunK/579ChpCpAci2z7tk/iwFPB2GIR7ohLtjsaRt jFc4KJPIZhoczh2MusCWejF/OjqM/xZK6lzsdDHpGsFqKDVtrjneejEQDDketpQuLQLO DD3/mUZo/oTbx4/T2n9q2esXmlUuSabeD/yqSz/Wb/u61pa7c4Maqphr77iojFMhgkdI 860jWAt79kqWuHSKhDAi5vO3asswQfbXc1nfsYVPR+lH313DTx4DJazC8N27OAQJVsub qIemteZT+qnEJjleNIqtCkwGrJlWROEievO/m8io0pOxmgsMs7RTm3BmDs1/nnFhBNol UG4Q== X-Forwarded-Encrypted: i=1; AJvYcCWxuchuIb7NnRzoJgl97QWNkJ2sONR4eRcveyMb1U8X84idTpkJwj4rUBgowG31/M5raZGieeF9lrxGkw==@lists.linux.dev X-Gm-Message-State: AOJu0YwEywUbVo0CsbxTBFKZavZgK3dAWySk4eDTmZJ5ajwihK02A74x AfSurIzCT3jAWPp4+o5YetxEZbuMsc2TRd0mGchM941bkUrjBYXWdz6XPzwTw4EzMKd1WiJyL2I IEcTDs0MuXDSzFBQX+NT2t8I8WufZl9XYsuvT8OBIsdh8CCHfWUoQXfjPWPA= X-Google-Smtp-Source: AGHT+IGiX6/70Km6mzsGii/V0WRMpJ+U+scQtbrSPwbYQFcuu9FtoReHLC4EFZBSXp3MS66kA50XFp1rhcKYZ4+ocCq55Iihm9UX Precedence: bulk X-Mailing-List: ocfs2-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1f86:b0:3dd:b808:be74 with SMTP id e9e14a558f8ab-3e282e39759mr174598075ab.13.1753021954995; Sun, 20 Jul 2025 07:32:34 -0700 (PDT) Date: Sun, 20 Jul 2025 07:32:34 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <687cfe02.a70a0220.693ce.00c7.GAE@google.com> Subject: [syzbot] [ocfs2?] possible deadlock in ocfs2_extend_allocation 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: 155a3c003e55 Merge tag 'for-6.16/dm-fixes-2' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10a7658c580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f09d04131ef56b22 dashboard link: https://syzkaller.appspot.com/bug?extid=2c472ed017e03a3e8bda compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/8b4489a1d2de/disk-155a3c00.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1c498d4c0c85/vmlinux-155a3c00.xz kernel image: https://storage.googleapis.com/syzbot-assets/ea8acdf1d890/bzImage-155a3c00.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2c472ed017e03a3e8bda@syzkaller.appspotmail.com JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,2) on (node local, slot 0) with ordered data mode. (syz.2.45,6361,1):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0x98842a5e, computed 0xe74db1cd. Applying ECC. ====================================================== WARNING: possible circular locking dependency detected 6.16.0-rc6-syzkaller-00002-g155a3c003e55 #0 Not tainted ------------------------------------------------------ syz.2.45/6361 is trying to acquire lock: ffff888052a28618 (sb_internal#6){.+.+}-{0:0}, at: ocfs2_extend_allocation+0x6d4/0x17a0 fs/ocfs2/file.c:597 but task is already holding lock: ffff888076345100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] ffff888076345100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x15e/0x4640 fs/ocfs2/suballoc.c:788 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #7 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:869 [inline] ocfs2_reserve_suballoc_bits+0x15e/0x4640 fs/ocfs2/suballoc.c:788 ocfs2_reserve_cluster_bitmap_bits fs/ocfs2/suballoc.c:1134 [inline] ocfs2_reserve_clusters_with_limit+0x2fb/0xba0 fs/ocfs2/suballoc.c:1179 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1229 [inline] ocfs2_lock_allocators+0x2fa/0x5c0 fs/ocfs2/suballoc.c:2772 ocfs2_extend_allocation+0x39b/0x17a0 fs/ocfs2/file.c:589 ocfs2_extend_no_holes+0x20e/0x4a0 fs/ocfs2/file.c:1027 ocfs2_acquire_dquot+0x6c6/0xb30 fs/ocfs2/quota_global.c:853 dqget+0x7ae/0xf10 fs/quota/dquot.c:977 ocfs2_setattr+0xd72/0x1b40 fs/ocfs2/file.c:1233 notify_change+0xb36/0xe40 fs/attr.c:552 chown_common+0x40c/0x5c0 fs/open.c:790 vfs_fchown fs/open.c:858 [inline] ksys_fchown+0xea/0x160 fs/open.c:870 __do_sys_fchown fs/open.c:875 [inline] __se_sys_fchown fs/open.c:873 [inline] __x64_sys_fchown+0x7a/0x90 fs/open.c:873 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 -> #6 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1577 ocfs2_lock_global_qf+0x1e8/0x270 fs/ocfs2/quota_global.c:314 ocfs2_acquire_dquot+0x2b0/0xb30 fs/ocfs2/quota_global.c:828 dqget+0x7ae/0xf10 fs/quota/dquot.c:977 ocfs2_setattr+0xd72/0x1b40 fs/ocfs2/file.c:1233 notify_change+0xb36/0xe40 fs/attr.c:552 chown_common+0x40c/0x5c0 fs/open.c:790 vfs_fchown fs/open.c:858 [inline] ksys_fchown+0xea/0x160 fs/open.c:870 __do_sys_fchown fs/open.c:875 [inline] __se_sys_fchown fs/open.c:873 [inline] __x64_sys_fchown+0x7a/0x90 fs/open.c:873 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 -> #5 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:869 [inline] ocfs2_lock_global_qf+0x1ca/0x270 fs/ocfs2/quota_global.c:313 ocfs2_acquire_dquot+0x2b0/0xb30 fs/ocfs2/quota_global.c:828 dqget+0x7ae/0xf10 fs/quota/dquot.c:977 ocfs2_setattr+0xd72/0x1b40 fs/ocfs2/file.c:1233 notify_change+0xb36/0xe40 fs/attr.c:552 chown_common+0x40c/0x5c0 fs/open.c:790 vfs_fchown fs/open.c:858 [inline] ksys_fchown+0xea/0x160 fs/open.c:870 __do_sys_fchown fs/open.c:875 [inline] __se_sys_fchown fs/open.c:873 [inline] __x64_sys_fchown+0x7a/0x90 fs/open.c:873 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 -> #4 (&dquot->dq_lock){+.+.}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 __mutex_lock_common kernel/locking/mutex.c:602 [inline] __mutex_lock+0x182/0xe80 kernel/locking/mutex.c:747 wait_on_dquot fs/quota/dquot.c:354 [inline] dqget+0x72a/0xf10 fs/quota/dquot.c:972 dquot_transfer+0x2f8/0x6d0 fs/quota/dquot.c:2140 ext4_setattr+0x865/0x1bc0 fs/ext4/inode.c:5817 notify_change+0xb36/0xe40 fs/attr.c:552 chown_common+0x40c/0x5c0 fs/open.c:790 vfs_fchown fs/open.c:858 [inline] ksys_fchown+0xea/0x160 fs/open.c:870 __do_sys_fchown fs/open.c:875 [inline] __se_sys_fchown fs/open.c:873 [inline] __x64_sys_fchown+0x7a/0x90 fs/open.c:873 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 -> #3 (&ei->xattr_sem){++++}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1577 ext4_write_lock_xattr fs/ext4/xattr.h:157 [inline] ext4_xattr_set_handle+0x165/0x1590 fs/ext4/xattr.c:2362 ext4_initxattrs+0x9f/0x110 fs/ext4/xattr_security.c:44 security_inode_init_security+0x2a0/0x3f0 security/security.c:1852 __ext4_new_inode+0x3257/0x3c50 fs/ext4/ialloc.c:1325 ext4_create+0x22d/0x460 fs/ext4/namei.c:2822 lookup_open fs/namei.c:3717 [inline] open_last_lookups fs/namei.c:3816 [inline] path_openat+0x14f4/0x3830 fs/namei.c:4052 do_filp_open+0x1fa/0x410 fs/namei.c:4082 do_sys_openat2+0x121/0x1c0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1463 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 -> #2 (jbd2_handle){++++}-{0:0}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 start_this_handle+0x1fa7/0x21c0 fs/jbd2/transaction.c:444 jbd2__journal_start+0x2c1/0x5b0 fs/jbd2/transaction.c:501 jbd2_journal_start+0x2a/0x40 fs/jbd2/transaction.c:540 ocfs2_start_trans+0x376/0x6d0 fs/ocfs2/journal.c:374 ocfs2_modify_bh+0xe8/0x470 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x1465/0x17e0 fs/ocfs2/quota_local.c:767 dquot_load_quota_sb+0x78e/0xbd0 fs/quota/dquot.c:2459 dquot_load_quota_inode+0x2e1/0x5d0 fs/quota/dquot.c:2496 ocfs2_enable_quotas+0x1c6/0x450 fs/ocfs2/super.c:930 ocfs2_fill_super+0x5115/0x63d0 fs/ocfs2/super.c:1140 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1681 vfs_get_tree+0x92/0x2b0 fs/super.c:1804 do_new_mount+0x24a/0xa40 fs/namespace.c:3902 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4427 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 -> #1 (&journal->j_trans_barrier){.+.+}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1524 ocfs2_start_trans+0x36a/0x6d0 fs/ocfs2/journal.c:372 ocfs2_modify_bh+0xe8/0x470 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x1465/0x17e0 fs/ocfs2/quota_local.c:767 dquot_load_quota_sb+0x78e/0xbd0 fs/quota/dquot.c:2459 dquot_load_quota_inode+0x2e1/0x5d0 fs/quota/dquot.c:2496 ocfs2_enable_quotas+0x1c6/0x450 fs/ocfs2/super.c:930 ocfs2_fill_super+0x5115/0x63d0 fs/ocfs2/super.c:1140 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1681 vfs_get_tree+0x92/0x2b0 fs/super.c:1804 do_new_mount+0x24a/0xa40 fs/namespace.c:3902 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4427 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 -> #0 (sb_internal#6){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3168 [inline] check_prevs_add kernel/locking/lockdep.c:3287 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3911 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5240 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs.h:1795 [inline] sb_start_intwrite include/linux/fs.h:1978 [inline] ocfs2_start_trans+0x26b/0x6d0 fs/ocfs2/journal.c:370 ocfs2_extend_allocation+0x6d4/0x17a0 fs/ocfs2/file.c:597 ocfs2_extend_no_holes+0x20e/0x4a0 fs/ocfs2/file.c:1027 ocfs2_acquire_dquot+0x6c6/0xb30 fs/ocfs2/quota_global.c:853 dqget+0x7ae/0xf10 fs/quota/dquot.c:977 ocfs2_setattr+0xd72/0x1b40 fs/ocfs2/file.c:1233 notify_change+0xb36/0xe40 fs/attr.c:552 chown_common+0x40c/0x5c0 fs/open.c:790 vfs_fchown fs/open.c:858 [inline] ksys_fchown+0xea/0x160 fs/open.c:870 __do_sys_fchown fs/open.c:875 [inline] __se_sys_fchown fs/open.c:873 [inline] __x64_sys_fchown+0x7a/0x90 fs/open.c:873 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 other info that might help us debug this: Chain exists of: sb_internal#6 --> &ocfs2_quota_ip_alloc_sem_key --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3); lock(&ocfs2_quota_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3); rlock(sb_internal#6); *** DEADLOCK *** 6 locks held by syz.2.45/6361: #0: ffff888052a28428 (sb_writers#23){.+.+}-{0:0}, at: mnt_want_write_file+0x60/0x200 fs/namespace.c:601 #1: ffff8880763409c0 (&type->i_mutex_dir_key#16){++++}-{4:4}, at: inode_lock_killable include/linux/fs.h:874 [inline] #1: ffff8880763409c0 (&type->i_mutex_dir_key#16){++++}-{4:4}, at: chown_common+0x313/0x5c0 fs/open.c:778 #2: ffff88807607e0a8 (&dquot->dq_lock){+.+.}-{4:4}, at: ocfs2_acquire_dquot+0x2a3/0xb30 fs/ocfs2/quota_global.c:823 #3: ffff888076345f40 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #3: ffff888076345f40 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_lock_global_qf+0x1ca/0x270 fs/ocfs2/quota_global.c:313 #4: ffff888076345be0 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_lock_global_qf+0x1e8/0x270 fs/ocfs2/quota_global.c:314 #5: ffff888076345100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #5: ffff888076345100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x15e/0x4640 fs/ocfs2/suballoc.c:788 stack backtrace: CPU: 1 UID: 0 PID: 6361 Comm: syz.2.45 Not tainted 6.16.0-rc6-syzkaller-00002-g155a3c003e55 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2046 check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2178 check_prev_add kernel/locking/lockdep.c:3168 [inline] check_prevs_add kernel/locking/lockdep.c:3287 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3911 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5240 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs.h:1795 [inline] sb_start_intwrite include/linux/fs.h:1978 [inline] ocfs2_start_trans+0x26b/0x6d0 fs/ocfs2/journal.c:370 ocfs2_extend_allocation+0x6d4/0x17a0 fs/ocfs2/file.c:597 ocfs2_extend_no_holes+0x20e/0x4a0 fs/ocfs2/file.c:1027 ocfs2_acquire_dquot+0x6c6/0xb30 fs/ocfs2/quota_global.c:853 dqget+0x7ae/0xf10 fs/quota/dquot.c:977 ocfs2_setattr+0xd72/0x1b40 fs/ocfs2/file.c:1233 notify_change+0xb36/0xe40 fs/attr.c:552 chown_common+0x40c/0x5c0 fs/open.c:790 vfs_fchown fs/open.c:858 [inline] ksys_fchown+0xea/0x160 fs/open.c:870 __do_sys_fchown fs/open.c:875 [inline] __se_sys_fchown fs/open.c:873 [inline] __x64_sys_fchown+0x7a/0x90 fs/open.c:873 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: 0033:0x7feefbb8e929 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:00007feefc940038 EFLAGS: 00000246 ORIG_RAX: 000000000000005d RAX: ffffffffffffffda RBX: 00007feefbdb5fa0 RCX: 00007feefbb8e929 RDX: 000000002108420a RSI: 000000003a736e6f RDI: 0000000000000004 RBP: 00007feefbc10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007feefbdb5fa0 R15: 00007ffcf2ccc4d8 (syz.2.45,6361,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xdf8356d3, computed 0xb8c23ae4. Applying ECC. (syz.2.45,6361,0):ocfs2_block_check_validate:416 ERROR: Fixed CRC32 failed: stored: 0xdf8356d3, computed 0x2acb7e3c (syz.2.45,6361,0):ocfs2_read_quota_phys_block:160 ERROR: status = -5 (syz.2.45,6361,1):ocfs2_quota_read:201 ERROR: status = -5 Quota error (device loop2): qtree_write_dquot: Error -5 occurred while creating quota (syz.2.45,6361,0):ocfs2_acquire_dquot:890 ERROR: status = -5 --- 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. 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