Author: fabient
Date: Fri Mar 26 14:35:48 2010
New Revision: 205694
URL: http://svn.freebsd.org/changeset/base/205694
Log:
Handling SIGPIPE will cause deadlock/crash.
Return an error immediatly in case of hard shutdown.
MFC after: 3days
Modified:
head/sys/dev/hwpmc/hwpmc_logging.c
Modified: head/sys/dev/hwpmc/hwpmc_logging.c
==============================================================================
--- head/sys/dev/hwpmc/hwpmc_logging.c Fri Mar 26 14:29:57 2010
(r205693)
+++ head/sys/dev/hwpmc/hwpmc_logging.c Fri Mar 26 14:35:48 2010
(r205694)
@@ -298,7 +298,6 @@ pmclog_loop(void *arg)
mtx_unlock(&pmc_kthread_mtx);
-sigpipe_retry:
/* process the request */
PMCDBG(LOG,WRI,2, "po=%p base=%p ptr=%p", po,
lb->plb_base, lb->plb_ptr);
@@ -322,9 +321,6 @@ sigpipe_retry:
if (error) {
/* XXX some errors are recoverable */
- if (error == EPIPE)
- goto sigpipe_retry;
-
/* send a SIGIO to the owner and exit */
PROC_LOCK(p);
psignal(p, SIGIO);
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