86 lines
3.4 KiB
Diff
86 lines
3.4 KiB
Diff
From cff0e417da58adef1ceef9a63a99412c2cc87ff3 Mon Sep 17 00:00:00 2001
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From: Antonio Borneo <borneo.antonio@gmail.com>
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Date: Wed, 23 Jun 2021 16:52:16 +0200
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Subject: [PATCH] stlink: fix SIGSEGV with libusb v1.0.24-33-g32a2206 (11618)
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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The stlink driver incorrectly uses a NULL pointer for libusb's
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struct libusb_context.
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The correct value to be used is local in libusb_helper.c.
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Move in the helper file, in a wrapper function, the only call that
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requires the above value, and let stlink driver to use this
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wrapper.
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This issue has not triggered any visible problem until a code
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refactoring [1] in libusb has made OpenOCD crashing on Windows and
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on MacOS.
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Change-Id: Id1818c8af7cf0d4d17dfa1d22aad079da01ef740
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Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
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Fixes: https://sourceforge.net/p/openocd/tickets/308/
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Fixes: https://github.com/libusb/libusb/issues/928/
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Fixes: 42d8fa899c6a ("stlink_usb: Submit multiple USB URBs at once to improve performance")
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Link: [1] https://github.com/libusb/libusb/commit/32a22069428c
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Reported-by: Andrzej Sierżęga <asier70@gmail.com>
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Co-developed-by: Andrzej Sierżęga <asier70@gmail.com>
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Co-developed-by: Xiaofan Chen <xiaofanc@gmail.com>
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Reviewed-on: http://openocd.zylin.com/6331
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Tested-by: jenkins
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Reviewed-by: Marc Schink <dev@zapb.de>
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Reviewed-by: Xiaofan <xiaofanc@gmail.com>
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Reviewed-by: Andrzej Sierżęga <asier70@gmail.com>
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Reviewed-by: Oleksij Rempel <linux@rempel-privat.de>
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Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
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---
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src/jtag/drivers/libusb_helper.c | 5 +++++
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src/jtag/drivers/libusb_helper.h | 1 +
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src/jtag/drivers/stlink_usb.c | 7 +------
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3 files changed, 7 insertions(+), 6 deletions(-)
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diff --git a/src/jtag/drivers/libusb_helper.c b/src/jtag/drivers/libusb_helper.c
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index f0122d534a..18fe4bad4c 100644
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--- a/src/jtag/drivers/libusb_helper.c
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+++ b/src/jtag/drivers/libusb_helper.c
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@@ -363,3 +363,8 @@ int jtag_libusb_get_pid(struct libusb_device *dev, uint16_t *pid)
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return ERROR_FAIL;
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}
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+
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+int jtag_libusb_handle_events_completed(int *completed)
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+{
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+ return libusb_handle_events_completed(jtag_libusb_context, completed);
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+}
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diff --git a/src/jtag/drivers/libusb_helper.h b/src/jtag/drivers/libusb_helper.h
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index fa7d06e286..3e77865d61 100644
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--- a/src/jtag/drivers/libusb_helper.h
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+++ b/src/jtag/drivers/libusb_helper.h
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@@ -60,5 +60,6 @@ int jtag_libusb_choose_interface(struct libusb_device_handle *devh,
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unsigned int *usb_write_ep,
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int bclass, int subclass, int protocol, int trans_type);
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int jtag_libusb_get_pid(struct libusb_device *dev, uint16_t *pid);
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+int jtag_libusb_handle_events_completed(int *completed);
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#endif /* OPENOCD_JTAG_DRIVERS_LIBUSB_HELPER_H */
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diff --git a/src/jtag/drivers/stlink_usb.c b/src/jtag/drivers/stlink_usb.c
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index c68bbb3ca8..7b1932b9f6 100644
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--- a/src/jtag/drivers/stlink_usb.c
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+++ b/src/jtag/drivers/stlink_usb.c
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@@ -497,13 +497,8 @@ static void sync_transfer_wait_for_completion(struct libusb_transfer *transfer)
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{
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int r, *completed = transfer->user_data;
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- /* Assuming a single libusb context exists. There no existing interface into this
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- * module to pass a libusb context.
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- */
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- struct libusb_context *ctx = NULL;
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-
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while (!*completed) {
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- r = libusb_handle_events_completed(ctx, completed);
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+ r = jtag_libusb_handle_events_completed(completed);
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if (r < 0) {
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if (r == LIBUSB_ERROR_INTERRUPTED)
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continue;
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