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Code Issues Releases Activity

When reparenting a process to init, make sure that p_sigparent is

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set to SIGCHLD.  This avoids the creation of orphaned Linux-threaded
zombies that init is unable to reap.  This can occur when the parent
process sets its SIGCHLD to SIG_IGN.  Fix a similar situation in the
PT_DETACH code.

Tested by:	"Steven Hartland" <killing AT multiplay.co.uk>
This commit is contained in:
Don Lewis 2004-02-11 22:06:02 +00:00
parent 40d387429f
commit 55b5f2a202
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=125720
2 changed files with 2 additions and 0 deletions
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1
sys/kern/kern_exit.c
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@ -458,6 +458,7 @@ exit1(struct thread *td, int rv)
pp = p->p_pptr;
PROC_UNLOCK(pp);
proc_reparent(p, initproc);
p->p_sigparent = SIGCHLD;
PROC_LOCK(p->p_pptr);
/*
* If this was the last child of our parent, notify

1
sys/kern/sys_process.c
View File

@ -561,6 +561,7 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data)
PROC_UNLOCK(pp);
PROC_LOCK(p);
proc_reparent(p, pp);
p->p_sigparent = SIGCHLD;
}
p->p_flag &= ~(P_TRACED | P_WAITED);
p->p_oppid = 0;