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16e8021881
When poking around with USB devices with slub_debug enabled, I found another obvious use after free. Turns out that in dwc2_hc_n_intr() I was in a state when the contents of chan->qh was filled with 0x6b, indicating that chan->qh was freed but chan still had a reference to it. Let's make sure that whenever we free qh we also make sure we remove a reference from its channel. The bug fixed here doesn't appear to be new--I believe I just got lucky and happened to see it while stress testing. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Kever Yang <kever.yang@rock-chips.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Felipe Balbi <balbi@kernel.org> |
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| .. | ||
| core_intr.c | ||
| core.c | ||
| core.h | ||
| debug.h | ||
| debugfs.c | ||
| gadget.c | ||
| hcd_ddma.c | ||
| hcd_intr.c | ||
| hcd_queue.c | ||
| hcd.c | ||
| hcd.h | ||
| hw.h | ||
| Kconfig | ||
| Makefile | ||
| pci.c | ||
| platform.c | ||