[syzbot] Monthly ext4 report (Dec 2025)

[syzbot] Monthly ext4 report (Dec 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, 2 new issues were detected and 0 were fixed.
In total, 51 issues are still open and 166 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  2913    Yes   INFO: task hung in sync_inodes_sb (5)
                   https://syzkaller.appspot.com/bug?extid=30476ec1b6dc84471133
<2>  2916    Yes   WARNING in ext4_xattr_inode_update_ref (2)
                   https://syzkaller.appspot.com/bug?extid=76916a45d2294b551fd9
<3>  2889    Yes   kernel BUG in ext4_do_writepages
                   https://syzkaller.appspot.com/bug?extid=d1da16f03614058fdc48
<4>  2588    Yes   possible deadlock in ext4_writepages (2)
                   https://syzkaller.appspot.com/bug?extid=eb5b4ef634a018917f3c
<5>  2150    Yes   INFO: task hung in jbd2_journal_commit_transaction (5)
                   https://syzkaller.appspot.com/bug?extid=3071bdd0a9953bc0d177
<6>  992     Yes   WARNING in ext4_xattr_inode_lookup_create
                   https://syzkaller.appspot.com/bug?extid=fe42a669c87e4a980051
<7>  535     Yes   possible deadlock in ext4_destroy_inline_data (2)
                   https://syzkaller.appspot.com/bug?extid=bb2455d02bda0b5701e3
<8>  451     Yes   INFO: task hung in do_get_write_access (3)
                   https://syzkaller.appspot.com/bug?extid=e7c786ece54bad9d1e43
<9>  420     Yes   possible deadlock in do_writepages (2)
                   https://syzkaller.appspot.com/bug?extid=756f498a88797cda9299
<10> 268     Yes   possible deadlock in ext4_xattr_inode_lookup_create
                   https://syzkaller.appspot.com/bug?extid=d91a6e2efb07bd3354e9

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