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Date:   Mon, 09 Oct 2023 02:23:52 -0700
From:   syzbot <>
Subject: [syzbot] Monthly ext4 report (Oct 2023)

Hello ext4 maintainers/developers,

This is a 31-day syzbot report for the ext4 subsystem.
All related reports/information can be found at:

During the period, 3 new issues were detected and 0 were fixed.
In total, 38 issues are still open and 116 have been fixed so far.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  4113    Yes   WARNING: locking bug in ext4_move_extents
<2>  326     Yes   WARNING: locking bug in __ext4_ioctl
<3>  145     Yes   WARNING: locking bug in ext4_ioctl
<4>  145     No    possible deadlock in evict (3)
<5>  83      Yes   INFO: task hung in sync_inodes_sb (5)
<6>  46      No    KASAN: slab-use-after-free Read in check_igot_inode
<7>  12      Yes   possible deadlock in ext4_xattr_inode_iget (2)
<8>  10      Yes   INFO: task hung in find_inode_fast (2)
<9>  9       Yes   kernel BUG in ext4_enable_quotas
<10> 7       Yes   KASAN: slab-use-after-free Read in ext4_convert_inline_data_nolock

This report is generated by a bot. It may contain errors.
See for more information about syzbot.
syzbot engineers can be reached at

To disable reminders for individual bugs, reply with the following command:
#syz set <Ref> no-reminders

To change bug's subsystems, reply with:
#syz set <Ref> subsystems: new-subsystem

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