Hi,
there's a race which would lead to reading from freed memory
possibly leading to a buffer overflow.
Solution: BKL
Regards
Oliver
You can import this changeset into BK by piping this whole message to:
'| bk receive [path to repository]' or apply the patch as usual.
===================================================================
[EMAIL PROTECTED], 2002-07-11 23:55:04+02:00, [EMAIL PROTECTED]
- fix module unload race
diff -Nru a/drivers/usb/core/drivers.c b/drivers/usb/core/drivers.c
--- a/drivers/usb/core/drivers.c Thu Jul 11 23:55:39 2002
+++ b/drivers/usb/core/drivers.c Thu Jul 11 23:55:39 2002
@@ -66,6 +66,7 @@
start = page;
end = page + (PAGE_SIZE - 100);
pos = *ppos;
+ lock_kernel(); /* else drivers might be unloaded */
for (; tmp != &usb_driver_list; tmp = tmp->next) {
struct usb_driver *driver = list_entry(tmp, struct usb_driver,
driver_list);
int minor = driver->fops ? driver->minor : -1;
@@ -80,6 +81,7 @@
break;
}
}
+ unlock_kernel();
if (start == page)
start += sprintf(start, "(none)\n");
len = start - page;
===================================================================
This BitKeeper patch contains the following changesets:
1.668
## Wrapped with gzip_uu ##
begin 664 bkpatch4516
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`
end
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