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[NTOSKRNL] In FsRtlAddToTunnelCache() allocate memory from PagedPool when required.

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Also, if allocating from lookaside list, reattempt a cold allocation.
This commit is contained in:
Pierre Schweitzer 2018-01-20 21:20:11 +01:00
parent cb8cc0d098
commit 2abb99faa9
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GPG key ID: 7545556C3D585B0B
1 changed files with 13 additions and 12 deletions
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25
ntoskrnl/fsrtl/tunnel.c
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@ -346,7 +346,7 @@ FsRtlAddToTunnelCache(IN PTUNNEL Cache,
IN ULONG DataLength,
IN PVOID Data)
{
PTUNNEL_NODE_ENTRY NodeEntry;
PTUNNEL_NODE_ENTRY NodeEntry = NULL;
PRTL_SPLAY_LINKS CurEntry, LastEntry;
ULONG Length;
LONG Result = 0;
@ -384,23 +384,24 @@ FsRtlAddToTunnelCache(IN PTUNNEL Cache,
Length += LongName->Length;
}
if (Length > DEFAULT_ENTRY_SIZE)
{
/* bigger than default entry */
NodeEntry = ExAllocatePool(NonPagedPool, Length);
AllocatedFromPool = TRUE;
}
else
if (Length <= DEFAULT_ENTRY_SIZE)
{
/* get standard entry */
NodeEntry = ExAllocateFromPagedLookasideList(&TunnelLookasideList);
}
/* check for success */
if (!NodeEntry)
if (NodeEntry == NULL)
{
/* out of memory */
return;
/* bigger than default entry or allocation failed */
NodeEntry = ExAllocatePool(PagedPool | POOL_COLD_ALLOCATION, Length);
/* check for success */
if (NodeEntry == NULL)
{
/* out of memory */
return;
}
AllocatedFromPool = TRUE;
}
/* acquire lock */