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[NTOS:PNP] Don't use a pointer to a stack structure in a work-item

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Previously FsRtlNotifyVolumeEvent would pass a pointer to a TARGET_DEVICE_CUSTOM_NOTIFICATION structure on the stack to IoReportTargetDeviceChangeAsynchronous, which would store a pointer to it in a work-item and process that after the stack object was already out of scope. This broke x64 boot. Started happening after recent fixes to IoReportTargetDeviceChangeAsynchronous.
This commit is contained in:
Timo Kreuzer 2024-10-09 13:21:29 +02:00
parent c0590f5de0
commit 176de8bd25
1 changed files with 9 additions and 4 deletions
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13
ntoskrnl/io/pnpmgr/pnpreport.c
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@ -21,7 +21,7 @@ typedef struct _INTERNAL_WORK_QUEUE_ITEM
PDEVICE_OBJECT PhysicalDeviceObject; PDEVICE_OBJECT PhysicalDeviceObject;
PDEVICE_CHANGE_COMPLETE_CALLBACK Callback; PDEVICE_CHANGE_COMPLETE_CALLBACK Callback;
PVOID Context; PVOID Context;
PTARGET_DEVICE_CUSTOM_NOTIFICATION NotificationStructure; TARGET_DEVICE_CUSTOM_NOTIFICATION NotificationStructure;
} INTERNAL_WORK_QUEUE_ITEM, *PINTERNAL_WORK_QUEUE_ITEM; } INTERNAL_WORK_QUEUE_ITEM, *PINTERNAL_WORK_QUEUE_ITEM;
NTSTATUS NTSTATUS
@ -104,7 +104,7 @@ IopReportTargetDeviceChangeAsyncWorker(PVOID Context)
PINTERNAL_WORK_QUEUE_ITEM Item; PINTERNAL_WORK_QUEUE_ITEM Item;
Item = (PINTERNAL_WORK_QUEUE_ITEM)Context; Item = (PINTERNAL_WORK_QUEUE_ITEM)Context;
PpSetCustomTargetEvent(Item->PhysicalDeviceObject, NULL, NULL, Item->Callback, Item->Context, Item->NotificationStructure); PpSetCustomTargetEvent(Item->PhysicalDeviceObject, NULL, NULL, Item->Callback, Item->Context, &Item->NotificationStructure);
ObDereferenceObject(Item->PhysicalDeviceObject); ObDereferenceObject(Item->PhysicalDeviceObject);
ExFreePoolWithTag(Context, ' pP'); ExFreePoolWithTag(Context, ' pP');
} }
@ -502,6 +502,7 @@ IoReportTargetDeviceChangeAsynchronous(IN PDEVICE_OBJECT PhysicalDeviceObject,
{ {
PINTERNAL_WORK_QUEUE_ITEM Item = NULL; PINTERNAL_WORK_QUEUE_ITEM Item = NULL;
PTARGET_DEVICE_CUSTOM_NOTIFICATION notifyStruct = (PTARGET_DEVICE_CUSTOM_NOTIFICATION)NotificationStructure; PTARGET_DEVICE_CUSTOM_NOTIFICATION notifyStruct = (PTARGET_DEVICE_CUSTOM_NOTIFICATION)NotificationStructure;
SIZE_T WorkItemSize;
ASSERT(notifyStruct); ASSERT(notifyStruct);
@ -527,16 +528,20 @@ IoReportTargetDeviceChangeAsynchronous(IN PDEVICE_OBJECT PhysicalDeviceObject,
return STATUS_INVALID_DEVICE_REQUEST; return STATUS_INVALID_DEVICE_REQUEST;
} }
/* Calculate the required size for the work item and notification structure */
WorkItemSize = FIELD_OFFSET(INTERNAL_WORK_QUEUE_ITEM, NotificationStructure)
+ notifyStruct->Size;
/* We need to store all the data given by the caller with the WorkItem, so use our own struct */ /* We need to store all the data given by the caller with the WorkItem, so use our own struct */
Item = ExAllocatePoolWithTag(NonPagedPool, sizeof(INTERNAL_WORK_QUEUE_ITEM), ' pP'); Item = ExAllocatePoolWithTag(NonPagedPool, WorkItemSize, ' pP');
if (!Item) return STATUS_INSUFFICIENT_RESOURCES; if (!Item) return STATUS_INSUFFICIENT_RESOURCES;
/* Initialize all stuff */ /* Initialize all stuff */
ObReferenceObject(PhysicalDeviceObject); ObReferenceObject(PhysicalDeviceObject);
Item->NotificationStructure = notifyStruct;
Item->PhysicalDeviceObject = PhysicalDeviceObject; Item->PhysicalDeviceObject = PhysicalDeviceObject;
Item->Callback = Callback; Item->Callback = Callback;
Item->Context = Context; Item->Context = Context;
RtlCopyMemory(&Item->NotificationStructure, notifyStruct, notifyStruct->Size);
ExInitializeWorkItem(&(Item->WorkItem), IopReportTargetDeviceChangeAsyncWorker, Item); ExInitializeWorkItem(&(Item->WorkItem), IopReportTargetDeviceChangeAsyncWorker, Item);
/* Finally, queue the item, our work here is done */ /* Finally, queue the item, our work here is done */