[syzbot] Monthly hfs report (Oct 2026)

From: syzbot

Date: Tue Oct 06 2026 - 00:37:41 EST


Hello hfs maintainers/developers,

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

During the period, 0 new issues were detected and 0 were fixed.
In total, 18 issues are still open and 42 have already been fixed.
There is also 1 low-priority issue.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 15760 Yes possible deadlock in hfsplus_get_block
https://syzkaller.appspot.com/bug?extid=b7ef7c0c8d8098686ae2
<2> 11266 Yes WARNING in hfs_bnode_create
https://syzkaller.appspot.com/bug?extid=a19ca73b21fe8bc69101
<3> 111 Yes INFO: task hung in deactivate_super (3)
https://syzkaller.appspot.com/bug?extid=cba6270878c89ed64a2d
<4> 17 Yes general protection fault in hfsplus_cat_write_inode
https://syzkaller.appspot.com/bug?extid=c0ba772a362e70937dfb
<5> 6037 Yes possible deadlock in hfs_extend_file (3)
https://syzkaller.appspot.com/bug?extid=2a62f58f1a4951a549bb
<6> 1887 Yes KMSAN: uninit-value in hfsplus_rename_cat
https://syzkaller.appspot.com/bug?extid=93f4402297a457fc6895
<7> 1059 Yes possible deadlock in hfsplus_file_extend (2)
https://syzkaller.appspot.com/bug?extid=4cba2fd444e9a16ae758
<8> 428 Yes possible deadlock in hfsplus_block_free
https://syzkaller.appspot.com/bug?extid=8fae81a1f77bf28ef3b5
<9> 19 Yes memory leak in __hfs_bnode_create
https://syzkaller.appspot.com/bug?extid=98547b0428b6a6a3467c

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