[syzbot] Monthly ext4 report (Jul 2025)

[syzbot] Monthly ext4 report (Jul 2025)

[syzbot]

Hello ext4 maintainers/developers,

This is a 31-day syzbot report for the ext4 subsystem.
All related reports/information can be found at:
https://syzkaller.appspot.com/upstream/s/ext4

During the period, 5 new issues were detected and 0 were fixed.
In total, 52 issues are still open and 156 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  73190   Yes   possible deadlock in dqget
                   https://syzkaller.appspot.com/bug?extid=6e493c165d26d6fcbf72
<2>  2590    Yes   KASAN: out-of-bounds Read in ext4_xattr_set_entry
                   https://syzkaller.appspot.com/bug?extid=f792df426ff0f5ceb8d1
<3>  2524    Yes   kernel BUG in ext4_do_writepages
                   https://syzkaller.appspot.com/bug?extid=d1da16f03614058fdc48
<4>  2514    Yes   INFO: task hung in sync_inodes_sb (5)
                   https://syzkaller.appspot.com/bug?extid=30476ec1b6dc84471133
<5>  2132    Yes   INFO: task hung in jbd2_journal_commit_transaction (5)
                   https://syzkaller.appspot.com/bug?extid=3071bdd0a9953bc0d177
<6>  440     Yes   INFO: task hung in do_get_write_access (3)
                   https://syzkaller.appspot.com/bug?extid=e7c786ece54bad9d1e43
<7>  413     No    KCSAN: data-race in generic_buffers_fsync_noflush / writeback_single_inode (3)
                   https://syzkaller.appspot.com/bug?extid=35257a2200785ea628f5
<8>  386     Yes   WARNING in ext4_xattr_inode_lookup_create
                   https://syzkaller.appspot.com/bug?extid=fe42a669c87e4a980051
<9>  242     Yes   INFO: task hung in do_renameat2 (2)
                   https://syzkaller.appspot.com/bug?extid=39a12f7473ed8066d2ca
<10> 211     Yes   possible deadlock in ext4_xattr_inode_lookup_create
                   https://syzkaller.appspot.com/bug?extid=d91a6e2efb07bd3354e9

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