The branch main has been updated by jamie:
URL:
https://cgit.FreeBSD.org/src/commit/?id=108a9384e9e945cccba73c959f7e9cdb023cbcad
commit 108a9384e9e945cccba73c959f7e9cdb023cbcad
Author: Jamie Gritton <ja...@freebsd.org>
AuthorDate: 2021-02-26 03:52:58 +0000
Commit: Jamie Gritton <ja...@freebsd.org>
CommitDate: 2021-02-26 03:52:58 +0000
jail: Fix locking on an early jail_set error.
I had locked allprison_lock without immediately setting PD_LIST_LOCKED.
---
sys/kern/kern_jail.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sys/kern/kern_jail.c b/sys/kern/kern_jail.c
index c58751e6f5fe..c8dcf928dfaa 100644
--- a/sys/kern/kern_jail.c
+++ b/sys/kern/kern_jail.c
@@ -998,13 +998,13 @@ kern_jail_set(struct thread *td, struct uio *optuio, int
flags)
jid = 0;
}
sx_xlock(&allprison_lock);
+ drflags = PD_LIST_XLOCKED;
ppr = mypr;
if (!prison_isalive(ppr)) {
/* This jail is dying. This process will surely follow. */
error = EAGAIN;
goto done_deref;
}
- drflags = PD_LIST_XLOCKED;
if (jid != 0) {
if (jid < 0) {
error = EINVAL;
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