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Don't call notification procedures with APC disabled, it may lead to some strange results.

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Thanks Alex for the time he took to help me to debug this issue

svn path=/trunk/; revision=24085
This commit is contained in:
Hervé Poussineau 2006-09-12 21:18:22 +00:00
parent 3fd92a4f96
commit 6ed6c1661e
1 changed files with 11 additions and 2 deletions
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13
reactos/ntoskrnl/io/pnpmgr/pnpnotify.c
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@ -202,6 +202,7 @@ IopNotifyPlugPlayNotification(
IN PVOID EventCategoryData2)
{
PPNP_NOTIFY_ENTRY ChangeEntry;
PLIST_ENTRY ListEntry;
PVOID NotificationStructure;
BOOLEAN CallCurrentEntry;
@ -265,9 +266,10 @@ IopNotifyPlugPlayNotification(
/* Loop through procedures registred in PnpNotifyListHead
* list to find those that meet some criteria.
*/
LIST_FOR_EACH(ChangeEntry,&PnpNotifyListHead, PNP_NOTIFY_ENTRY, PnpNotifyList)
ListEntry = PnpNotifyListHead.Flink;
while (ListEntry != &PnpNotifyListHead)
{
ChangeEntry = CONTAINING_RECORD(ListEntry, PNP_NOTIFY_ENTRY, PnpNotifyList);
CallCurrentEntry = FALSE;
switch (EventCategory)
@ -298,15 +300,22 @@ IopNotifyPlugPlayNotification(
}
}
/* Move to the next element now, as callback may unregister itself */
ListEntry = ListEntry->Flink;
/* FIXME: If ListEntry was the last element and that callback registers
* new notifications, those won't be checked... */
if (CallCurrentEntry)
{
/* Call entry into new allocated memory */
DPRINT("IopNotifyPlugPlayNotification(): found suitable callback %p\n",
ChangeEntry);
KeReleaseGuardedMutex(&PnpNotifyListLock);
(ChangeEntry->PnpNotificationProc)(
NotificationStructure,
ChangeEntry->Context);
KeAcquireGuardedMutex(&PnpNotifyListLock);
}
}