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Date:   Wed, 08 Nov 2023 15:44:21 -0800
From:   syzbot <>
Subject: [syzbot] Monthly ext4 report (Nov 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, 2 new issues were detected and 0 were fixed.
In total, 41 issues are still open and 118 have been fixed so far.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  51606   Yes   possible deadlock in console_flush_all (2)
<2>  10182   Yes   KASAN: slab-out-of-bounds Read in generic_perform_write
<3>  5928    Yes   WARNING: locking bug in ext4_move_extents
<4>  470     Yes   WARNING: locking bug in __ext4_ioctl
<5>  207     Yes   WARNING: locking bug in ext4_ioctl
<6>  150     No    possible deadlock in evict (3)
<7>  101     Yes   INFO: task hung in sync_inodes_sb (5)
<8>  30      Yes   kernel BUG in ext4_write_inline_data_end
<9>  16      No    possible deadlock in start_this_handle (4)
<10> 13      Yes   INFO: rcu detected stall in sys_unlink (3)

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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