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Code Issues Releases Activity

aio_qphysio(): Avoid uninitialized pointer read on error.

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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
MFC after:	1 week
This commit is contained in:
Pedro F. Giffuni 2016-03-18 19:04:01 +00:00
parent b011fce09f
commit 5166fdde7f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=297037
1 changed files with 2 additions and 1 deletions
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3
sys/kern/vfs_aio.c
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@ -1226,7 +1226,8 @@ aio_qphysio(struct proc *p, struct kaiocb *job)
if (!unmap) {
job->pbuf = pbuf = (struct buf *)getpbuf(NULL);
BUF_KERNPROC(pbuf);
}
} else
pbuf = NULL;
AIO_LOCK(ki);
if (!unmap)