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kern/38439: pg_free: process group absent or has members

>Number:         38439
>Category:       kern
>Synopsis:       pg_free: process group absent or has members
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 16 02:15:00 +0000 2008
>Originator:     YAMAMOTO Takashi <>
>Release:        NetBSD 4.99.59
Architecture: i386
Machine: i386
        i saw the following panic when running ./ -j 128
        on a system with 4 cpus.

panic: pg_free: process group absent or has members
Stopped in pid 324.1 (zsh) at   netbsd:breakpoint+0x4:  popl    %ebp
db{1}> t
breakpoint(c04eadd7,d83f2b88,c4929000,c0307540,c05873fe) at netbsd:breakpoint+0x
panic(c04d96e0,3,c05873fe,0,d83949a0) at netbsd:panic+0x1c3
pg_free(c05867e4,124e50,b25c9ec2,c03071a7,c05873fe) at netbsd:pg_free+0x49
sessdelete(d83949a0,df3fe368,df3fe368,c030a88b,0) at netbsd:sessdelete+0x22
pg_delete(df3fe368,0,ded846d0,d8447970,a) at netbsd:pg_delete+0xb2
do_sys_wait(d8441b40,d83f2cc4,d83f2ccc,3,d83f2c7c) at netbsd:do_sys_wait+0x420
sys_wait4(d8441b40,d83f2d00,d83f2d28,bbaa014c,bbaa0000) at netbsd:sys_wait4+0x52

syscall(d83f2d48,b3,ab,23,23) at netbsd:syscall+0xb1



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