Author: pfg
Date: Fri Mar 25 01:01:32 2016
New Revision: 297263
URL: https://svnweb.freebsd.org/changeset/base/297263
Log:
MFC r297037:
aio_qphysio(): Avoid uninitialized pointer read on error.
For the !unmap case it may happen that pbuf gets called unreferenced
when vm_fault_quick_hold_pages() fails.
Initialize it so it doesn't cause trouble.
CID: 1352776
Reviewed by: jhb
Modified:
stable/10/sys/kern/vfs_aio.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/kern/vfs_aio.c
==============================================================================
--- stable/10/sys/kern/vfs_aio.c Fri Mar 25 00:58:34 2016
(r297262)
+++ stable/10/sys/kern/vfs_aio.c Fri Mar 25 01:01:32 2016
(r297263)
@@ -1355,7 +1355,8 @@ aio_qphysio(struct proc *p, struct aiocb
if (!unmap) {
aiocbe->pbuf = pbuf = (struct buf *)getpbuf(NULL);
BUF_KERNPROC(pbuf);
- }
+ } else
+ pbuf = NULL;
AIO_LOCK(ki);
ki->kaio_count++;
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