[BUG] Periodic Segfaults

[nsadlo]

Describe the bug
While using the mount to read and write files there will be a segfault. The more heavy IO load the more likely it appears to occur.

To Reproduce

• Contents of /etc/autotier.conf

# autotier config
[Global]                       # global settings
Log Level = 1                  # 0 = none, 1 = normal, 2 = debug
Tier Period = 1000             # number of seconds between file move batches
Copy Buffer Size = 1 MiB       # size of buffer for moving files between tiers

[SSD Tier]                       # tier name (can be anything)
Path = /SSD_TIER               # full path to tier storage pool
Quota = 80 %                   # absolute or % usage to keep tier under
# Quota format: x ( % | [K..T][i]B )
# Example: Quota = 5.3 TiB

[HDD Tier]
Path = /HDD_TIER
Quota = 100 %

• Command/fstab entry used to mount

/usr/bin/autotierfs /mnt/STORAGE fuse allow_other,default_permissions 0 0

• Action that caused error

Downloading games from Steam and using FUSE mount as library location. Also copying music collection over as a test.

Expected behavior
autotierfs would not crash

Error Output
If applicable, include any error messages shown, including output of journalctl | grep autotierfs | grep -v "Tiering complete".

There was no output from that command. But the following is what appears in /var/log/kern.log

Apr 30 21:27:50 HOSTNAME kernel: [13594.549530] autotierfs[615276]: segfault at 7f441c2e9b8b ip 000055c145819d38 sp 00007f441e7fb770 error 4 in autotierfs[55c1457a6000+468000]
Apr 30 21:27:50 HOSTNAME kernel: [13594.549547] Code: 4e 08 49 89 c0 31 d2 48 63 c1 48 f7 f7 49 39 d2 0f 85 0e 05 00 00 48 89 f0 41 39 c9 75 d5 49 8b 00 48 85 c0 0f 84 fa 04 00 00 <4c> 8b 68 10 4c 8d 64 24 60 4c 8d 74 24 50 4c 89 64 24 50 4d 85 ed
Apr 30 21:53:21 HOSTNAME kernel: [15125.653021] autotierfs[807976]: segfault at 7facac111 ip 000055ec053a6e1e sp 00007fac1dffa770 error 4 in autotierfs[55ec05333000+468000]
Apr 30 21:53:21 HOSTNAME kernel: [15125.653033] Code: 8b 48 08 49 89 c2 31 d2 48 63 c1 48 f7 f6 49 39 d1 0f 85 16 04 00 00 4c 89 c0 39 cf 75 d5 49 8b 02 48 85 c0 0f 84 03 04 00 00 <48> 8b 40 10 48 89 44 24 08 e8 14 5c 00 00 49 89 c7 48 83 f8 ff 0f

System (please complete the following information):

• OS: [e.g. Ubuntu 20.04, Arch]
  Kubuntu 22.04
• Fuse library version [apt list --installed | grep fuse]
  exfat-fuse/jammy,now 1.3.0+git20220115-2 amd64 [installed]
  fuse3/jammy,now 3.10.5-1build1 amd64 [installed,automatic]
  kio-fuse/jammy,now 5.0.1-1 amd64 [installed,automatic]
  libfuse2/jammy,now 2.9.9-5ubuntu3 amd64 [installed,automatic]
  libfuse3-3/jammy,now 3.10.5-1build1 amd64 [installed]
  libfuse3-dev/jammy,now 3.10.5-1build1 amd64 [installed]
  libsquashfuse0/jammy,now 0.1.103-3 amd64 [installed,automatic]
• Version [e.g. v1.1.3]
  latest github build 1.2.0-1

Additional context
My Tiers are zpools, but I do not think that should matter as I believe the underlying FS does not matter.

[nsadlo]

Nevermind, close this out as it appears the issue was building the facebook rocksdb from the latest instead of the referenced version