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jail: Fix locking on an early jail_set error.

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I had locked allprison_lock without immediately setting PD_LIST_LOCKED.
This commit is contained in:
Jamie Gritton 2021-02-25 19:52:58 -08:00
parent 1fc928770b
commit 108a9384e9
1 changed files with 1 additions and 1 deletions
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2
sys/kern/kern_jail.c
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@ -998,13 +998,13 @@ kern_jail_set(struct thread *td, struct uio *optuio, int flags)
jid = 0; jid = 0;
} }
sx_xlock(&allprison_lock); sx_xlock(&allprison_lock);
drflags = PD_LIST_XLOCKED;
ppr = mypr; ppr = mypr;
if (!prison_isalive(ppr)) { if (!prison_isalive(ppr)) {
/* This jail is dying. This process will surely follow. */ /* This jail is dying. This process will surely follow. */
error = EAGAIN; error = EAGAIN;
goto done_deref; goto done_deref;
} }
drflags = PD_LIST_XLOCKED;
if (jid != 0) { if (jid != 0) {
if (jid < 0) { if (jid < 0) {
error = EINVAL; error = EINVAL;