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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-17 09:40:52 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-17 09:40:52 -0700 |
| commit | e13cef8ded69e469b56e150e30619693b91b1864 (patch) | |
| tree | 6848fd484b7d0e42c235ac54290f72dfde45d9ad /ipc/msg.c | |
| parent | b762799dd8b03ec0aafc54ba165564902eac3e18 (diff) | |
| parent | e086ed76671252d5b539854a83f8506be7bea05c (diff) | |
Merge tag 'iio-fixes-for-3.12c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-linus
Jonathan writes:
Third set of IIO fixes for the 3.12 cycle.
Two little ones this time:
1) A missing clk_unprepare in adf4350.
2) A missing free of the active_scan_mask when iio_disable_all_buffers is
called during an unexpected device removal. This leak was introduced by
the fix
a87c82e454f184a9473f8cdfd4d304205f585f65 iio: Stop sampling when the device is removed
and hence is a regression fix.
Diffstat (limited to 'ipc/msg.c')
| -rw-r--r-- | ipc/msg.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/ipc/msg.c b/ipc/msg.c index 9e4310c546ae..558aa91186b6 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -695,6 +695,12 @@ long do_msgsnd(int msqid, long mtype, void __user *mtext, if (ipcperms(ns, &msq->q_perm, S_IWUGO)) goto out_unlock0; + /* raced with RMID? */ + if (msq->q_perm.deleted) { + err = -EIDRM; + goto out_unlock0; + } + err = security_msg_queue_msgsnd(msq, msg, msgflg); if (err) goto out_unlock0; @@ -901,6 +907,13 @@ long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp, int msgfl goto out_unlock1; ipc_lock_object(&msq->q_perm); + + /* raced with RMID? */ + if (msq->q_perm.deleted) { + msg = ERR_PTR(-EIDRM); + goto out_unlock0; + } + msg = find_msg(msq, &msgtyp, mode); if (!IS_ERR(msg)) { /* |