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| author | Tim J. Robbins <tjr@FreeBSD.org> | 2003-03-12 11:10:04 +0000 |
|---|---|---|
| committer | Tim J. Robbins <tjr@FreeBSD.org> | 2003-03-12 11:10:04 +0000 |
| commit | 3890793e9c2c5d52c50d4a9b0b0f6d1e1485b231 (patch) | |
| tree | b40e54119ce451252623b117d2f6a1e45c3cad27 /sys/kern/kern_exit.c | |
| parent | 9eb8572ea2aeba149c1519a362171eaa4ada22db (diff) | |
| download | src-3890793e9c2c5d52c50d4a9b0b0f6d1e1485b231.tar.gz src-3890793e9c2c5d52c50d4a9b0b0f6d1e1485b231.zip | |
In wait1(), remove the zombie process from zombproc before removing
it from its pgrp to avoid leaving zombies around with p_pgrp == NULL.
This bug was apparent as a NULL-dereference in the pid selection code
in fork1().
Notes
Notes:
svn path=/head/; revision=112139
Diffstat (limited to 'sys/kern/kern_exit.c')
| -rw-r--r-- | sys/kern/kern_exit.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/sys/kern/kern_exit.c b/sys/kern/kern_exit.c index 6cc3e0ae7258..f0554e0c296f 100644 --- a/sys/kern/kern_exit.c +++ b/sys/kern/kern_exit.c @@ -657,17 +657,17 @@ loop: mtx_unlock(&Giant); return (0); } - /* - * Remove other references to this process to ensure - * we have an exclusive reference. - */ - leavepgrp(p); sx_xlock(&allproc_lock); LIST_REMOVE(p, p_list); /* off zombproc */ sx_xunlock(&allproc_lock); LIST_REMOVE(p, p_sibling); + /* + * Remove other references to this process to ensure + * we have an exclusive reference. + */ + leavepgrp(p); sx_xunlock(&proctree_lock); /* |