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Added stack frames and Tag printing to used blocks. This allows redzone

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violations on used blocks to tell where the block was allocated.

svn path=/trunk/; revision=12094
This commit is contained in:
Art Yerkes 2004-12-13 20:11:08 +00:00
parent 0492a94c6f
commit 91ff22985a
1 changed files with 73 additions and 5 deletions
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78
reactos/ntoskrnl/mm/ppool.c
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@ -1,4 +1,4 @@
/* $Id: ppool.c,v 1.35 2004/12/12 23:09:13 ekohl Exp $
/* $Id: ppool.c,v 1.36 2004/12/13 20:11:08 arty Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -62,6 +62,9 @@ typedef struct _MM_PPOOL_USED_BLOCK_HEADER
#endif//MM_PPOOL_REDZONE_BYTES
struct _MM_PPOOL_USED_BLOCK_HEADER* NextUsed;
ULONG Tag;
#if MM_PPOOL_REDZONE_BYTES
ULONG LastOwnerStack[MM_PPOOL_LASTOWNER_ENTRIES];
#endif//MM_PPOOL_REDZONE_BYTES
}
MM_PPOOL_USED_BLOCK_HEADER, *PMM_PPOOL_USED_BLOCK_HEADER;
@ -196,13 +199,32 @@ MmpRedZoneCheck ( PMM_PPOOL_USED_BLOCK_HEADER pUsed, PUCHAR Addr, const char* fi
violation = "High-side";
DbgPrint("%s(%i): %s redzone violation detected for paged pool address 0x%x\n",
file, line, violation, Addr );
DbgPrint ( "UsedMagic 0x%x, LoZone ", pUsed->UsedMagic );
DbgPrint ( "UsedMagic 0x%x, Tag 0x%x, LoZone ",
pUsed->UsedMagic,
pUsed->Tag);
for ( i = 0; i < MM_PPOOL_REDZONE_BYTES; i++ )
DbgPrint ( "%02x", Addr[i] );
DbgPrint ( ", HiZone " );
for ( i = 0; i < MM_PPOOL_REDZONE_BYTES; i++ )
DbgPrint ( "%02x", AddrEnd[i] );
DbgPrint ( "\n" );
DbgPrint ( "First Free Stack Frames:" );
for ( i = 0; i < MM_PPOOL_LASTOWNER_ENTRIES; i++ )
{
if ( pUsed->LastOwnerStack[i] != 0xDEADBEEF )
{
DbgPrint(" ");
if (!KeRosPrintAddress ((PVOID)pUsed->LastOwnerStack[i]) )
{
DbgPrint("<%X>", pUsed->LastOwnerStack[i] );
}
}
}
DbgPrint ( "\n" );
KEBUGCHECK(BAD_POOL_HEADER);
}
}
@ -346,7 +368,7 @@ ExAllocatePagedPoolWithTag (IN POOL_TYPE PoolType,
ASSERT ( BestAlignedAddr > Addr );
NewFreeBlock->Size = (char*)Addr + BestBlock->Size - (char*)BestAlignedAddr;
#if MM_PPOOL_REDZONE_BYTES
NewFreeBlock->FreeMagic = MM_PPOOL_FREEMAGIC;
NewFreeBlock->FreeMagic = MM_PPOOL_FREEMAGIC;
#endif//MM_PPOOL_REDZONE_BYTES
ASSERT_SIZE(NewFreeBlock->Size);
BestBlock->Size = (size_t)NewFreeBlock - (size_t)Addr;
@ -454,7 +476,30 @@ ExAllocatePagedPoolWithTag (IN POOL_TYPE PoolType,
//DPRINT(".");
NewBlock->Size = BlockSize;
#if MM_PPOOL_REDZONE_BYTES
NewBlock->UsedMagic = MM_PPOOL_USEDMAGIC;
{
PULONG Frame;
int i;
#if defined __GNUC__
__asm__("mov %%ebp, %%ebx" : "=b" (Frame) : );
#elif defined(_MSC_VER)
__asm mov [Frame], ebp
#endif
NewBlock->UsedMagic = MM_PPOOL_USEDMAGIC;
Frame = (PULONG)Frame[0]; // step out of ExFreePagedPool
for ( i = 0; i < MM_PPOOL_LASTOWNER_ENTRIES; i++ )
{
if ( Frame == 0 || (ULONG)Frame == 0xDEADBEEF )
NewBlock->LastOwnerStack[i] = 0xDEADBEEF;
else
{
//DbgPrint ( " 0x%x", Frame[1] );
NewBlock->LastOwnerStack[i] = Frame[1];
Frame = (PULONG)Frame[0];
}
}
}
#endif//MM_PPOOL_REDZONE_BYTES
ASSERT_SIZE ( NewBlock->Size );
//DPRINT(".\n");
@ -482,7 +527,30 @@ ExAllocatePagedPoolWithTag (IN POOL_TYPE PoolType,
NewBlock = (PMM_PPOOL_USED_BLOCK_HEADER)BestBlock;
NewBlock->Size = NewSize;
#if MM_PPOOL_REDZONE_BYTES
NewBlock->UsedMagic = MM_PPOOL_USEDMAGIC;
{
PULONG Frame;
int i;
#if defined __GNUC__
__asm__("mov %%ebp, %%ebx" : "=b" (Frame) : );
#elif defined(_MSC_VER)
__asm mov [Frame], ebp
#endif
NewBlock->UsedMagic = MM_PPOOL_USEDMAGIC;
Frame = (PULONG)Frame[0]; // step out of ExFreePagedPool
for ( i = 0; i < MM_PPOOL_LASTOWNER_ENTRIES; i++ )
{
if ( Frame == 0 || (ULONG)Frame == 0xDEADBEEF )
NewBlock->LastOwnerStack[i] = 0xDEADBEEF;
else
{
//DbgPrint ( " 0x%x", Frame[1] );
NewBlock->LastOwnerStack[i] = Frame[1];
Frame = (PULONG)Frame[0];
}
}
}
#endif//MM_PPOOL_REDZONE_BYTES
ASSERT_SIZE ( NewBlock->Size );
}