[DragonFlyBSD - Bug #1744] (In Progress) HAMMER fsstress panic in hammer_setup_child_callback

bugtracker-admin at leaf.dragonflybsd.org bugtracker-admin at leaf.dragonflybsd.org
Mon Jan 19 04:35:31 PST 2015

Issue #1744 has been updated by tuxillo.

Description updated
Category set to VFS subsystem
Status changed from New to In Progress
Assignee deleted (0)
Target version set to 4.2.x


I am unsure whether this is an issue with fq or hammer itself.
We would need to run fsstress again and see if it can be reproduced.

Antonio Huete

Bug #1744: HAMMER fsstress panic in hammer_setup_child_callback

* Author: vsrinivas
* Status: In Progress
* Priority: Normal
* Assignee: 
* Category: VFS subsystem
* Target version: 4.2.x
While running fsstress on HAMMER on a build of DragonFly from today (after the 
most recent dsched fixes, with fq policy), I got a panic in 
hammer_setup_child_callback, called from hammer_rec_rb_tree_RB_SCAN, ultimately 
from hammer_flusher_slave_thread.  Fsync_mode = 2.

Core at http://acm.jhu.edu/~me/vmcore.n0.gz, kernel at 

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