blob: ca3074df2b7cd0a36df8ada784089a30cfff28cb (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
Heap-use-after-free through double-fetch in ehci
Hello,
I don't have a qtest reproducer for this crash because it involves a DMA double-fetch, and I don't think we can reproduce those with qtest.
Instead, I attached the pseudo-qtest trace produced by the fuzzer, along with some trace events.
The lines annotated with [DMA] are write commands that were triggered by a callback from a DMA read by the device. The lines annotated with [DOUBLE-FETCH] are DMA accesses that hit the same address more than once (possible double-fetches).
I am still thinking of nicer ways of presenting this trace and providing a reproducer.
-Alex
Hi Alexander! Have you ever been able to create a reproducer for this problem?
No. If we figure out some way to consistently reproduce double-fetches in a non-fuzzer build, I'll report the issue again, but this can probably be closed
Ok, let's close this one since it was not reproducible. If you find a reproducer, please open a new ticket in the gitlab tracker instead.
|