From 10ec776aee8b4bf7ab4e9506ccb9af366e7bcb86 Mon Sep 17 00:00:00 2001 From: netchild Date: Sun, 7 Jan 2007 19:09:20 +0000 Subject: MFp4 (112499): Protect em->shared with the lock in case of CLONE_THREAD. Submitted by: rdivacky --- sys/compat/linux/linux_emul.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'sys/compat/linux/linux_emul.c') diff --git a/sys/compat/linux/linux_emul.c b/sys/compat/linux/linux_emul.c index 4083f53..a06e231 100644 --- a/sys/compat/linux/linux_emul.c +++ b/sys/compat/linux/linux_emul.c @@ -119,10 +119,12 @@ linux_proc_init(struct thread *td, pid_t child, int flags) if (child != 0) { if (flags & CLONE_THREAD) { /* lookup the parent */ + EMUL_SHARED_WLOCK(&emul_shared_lock); p_em = em_find(td->td_proc, EMUL_DONTLOCK); KASSERT(p_em != NULL, ("proc_init: parent emuldata not found for CLONE_THREAD\n")); em->shared = p_em->shared; em->shared->refs++; + EMUL_SHARED_WUNLOCK(&emul_shared_lock); } else { /* * handled earlier to avoid malloc(M_WAITOK) with -- cgit v1.1