#649 afpd crash (netatalk 3.11.1) on FreeBSD 11.1 with ZFS

[rene]

We are seeing a reproduceable crash on netatalk3 on FreeBSD 11.1 on a ZFS filesystem.

Here are some relevant log entries:

• dircache_remove(1374246,"xxx.pdf"): not in didname index
• kernel: pid 89268 (afpd), uid 100009: exited on signal 6
• INTERNAL ERROR: Signal 11 in pid 89268 (3.1.11)
• sys_ea_copyfile("xxx.psd"): error: Attribute not found
• copyfile('/xxx.psd'): vfs_copyfile: Attribute not found
• Dumping directory cache...

The share disconnects after this and the user must reconnect.
We are using PAM with winbind to get netatalk authenticating against a windows AD domain.

afp.conf:

[Global]
ea = samba
uam list = uams_dhx2_pam.so, uams_dhx_pam.so, uams_pam.so
mimic model = RackMac
afpstats = yes
unix charset = UTF8
nt domain = DOMAIN
nt separator = +

[artwork]
path = /tank/shares/artwork
cnid dev = no
file perm = 664
directory perm = 775
umask = 000

[Daniel Markstedt]

What are the typical steps leading up to the crash? The logs talks about pdf and psd files. How are these files created? Did they exist at the time of the crash?

FWIW I've been running the latest netatalk main development code on FreeBSD13 for the last week without incident, but I haven't done any really advanced file operations. Perhaps it is a particular app that generates files with particular metadata that causes this issue?