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| author | Alexander Leidinger <netchild@FreeBSD.org> | 2007-01-07 19:09:20 +0000 |
|---|---|---|
| committer | Alexander Leidinger <netchild@FreeBSD.org> | 2007-01-07 19:09:20 +0000 |
| commit | 291081ce0a03bfab5edacb60dd96934cca7e687b (patch) | |
| tree | db5633e7d69cc1cc01f21fff33065a772f55908a /sys/compat | |
| parent | 1c65504ca8bb2d3696e328120de762d764e10cdf (diff) | |
| download | src-291081ce0a03bfab5edacb60dd96934cca7e687b.tar.gz src-291081ce0a03bfab5edacb60dd96934cca7e687b.zip | |
MFp4 (112499):
Protect em->shared with the lock in case of CLONE_THREAD.
Submitted by: rdivacky
Notes
Notes:
svn path=/head/; revision=165868
Diffstat (limited to 'sys/compat')
| -rw-r--r-- | sys/compat/linux/linux_emul.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/compat/linux/linux_emul.c b/sys/compat/linux/linux_emul.c index 4083f537ebc3..a06e23135b3a 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 |