Bug 218431

Summary:	Process hangs in uninterruptable state 'cgticb'
Product:	Base System	Reporter:	Yuri Victorovich <yuri>
Component:	kern	Assignee:	freebsd-bugs (Nobody) <bugs>
Status:	New ---
Severity:	Affects Only Me
Priority:	---
Version:	11.0-STABLE
Hardware:	Any
OS:	Any

Description Yuri Victorovich freebsd_committer

2017-04-06 16:27:15 UTC

scanimage from sane-backends-1.0.25 can't be killed (-9):

>   PID  PPID  PGID   SID  TSID THR LOGIN    WCHAN     EMUL          COMM        
> 34808 34807 34807 25735 25735   1 yuri     cgticb    FreeBSD ELF64 scanimage   

I think it's almost always a bug in kernel when some system call never exits like this.

The original command was:
> scanimage --resolution 600

cam_periph_getccb in cam/cam_xpt.c

r308114