[ Sasha's backport helper bot ]
Hi,
Found matching upstream commit: f7d306b47a24367302bd4fe846854e07752ffcd9
WARNING: Author mismatch between patch and found commit: Backport author: "=?UTF-8?q?Beno=C3=AEt=20Sevens?=" bsevens@google.com Commit author: Dan Carpenter dan.carpenter@linaro.org
Status in newer kernel trees: 6.12.y | Present (different SHA1: 7f1292f8d4d6) 6.6.y | Not found 6.1.y | Not found 5.15.y | Not found 5.10.y | Not found 5.4.y | Not found
Note: The patch differs from the upstream commit: --- 1: f7d306b47a24 ! 1: e539a25e17f7 ALSA: usb-audio: Fix a DMA to stack memory bug @@ Commit message Signed-off-by: Dan Carpenter dan.carpenter@linaro.org Link: https://patch.msgid.link/60e3aa09-039d-46d2-934c-6f123026c2eb@stanley.mounta... Signed-off-by: Takashi Iwai tiwai@suse.de + (cherry picked from commit f7d306b47a24367302bd4fe846854e07752ffcd9) + [Benoît: there is no mbox3 suppport and no __free macro in 5.4] + Signed-off-by: Benoît Sevens bsevens@google.com
## sound/usb/quirks.c ## @@ sound/usb/quirks.c: int snd_usb_create_quirk(struct snd_usb_audio *chip, @@ sound/usb/quirks.c: int snd_usb_create_quirk(struct snd_usb_audio *chip, { struct usb_host_config *config = dev->actconfig; - struct usb_device_descriptor new_device_descriptor; -+ struct usb_device_descriptor *new_device_descriptor __free(kfree) = NULL; ++ struct usb_device_descriptor *new_device_descriptor = NULL; int err;
if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD || @@ sound/usb/quirks.c: static int snd_usb_extigy_boot_quirk(struct usb_device *dev, else - memcpy(&dev->descriptor, &new_device_descriptor, sizeof(dev->descriptor)); + memcpy(&dev->descriptor, new_device_descriptor, sizeof(dev->descriptor)); ++ kfree(new_device_descriptor); err = usb_reset_configuration(dev); if (err < 0) dev_dbg(&dev->dev, "error usb_reset_configuration: %d\n", err); @@ sound/usb/quirks.c: static void mbox2_setup_48_24_magic(struct usb_device *dev) { struct usb_host_config *config = dev->actconfig; - struct usb_device_descriptor new_device_descriptor; -+ struct usb_device_descriptor *new_device_descriptor __free(kfree) = NULL; ++ struct usb_device_descriptor *new_device_descriptor = NULL; int err; u8 bootresponse[0x12]; int fwsize; @@ sound/usb/quirks.c: static int snd_usb_mbox2_boot_quirk(struct usb_device *dev) else - memcpy(&dev->descriptor, &new_device_descriptor, sizeof(dev->descriptor)); + memcpy(&dev->descriptor, new_device_descriptor, sizeof(dev->descriptor)); - - err = usb_reset_configuration(dev); - if (err < 0) -@@ sound/usb/quirks.c: static void mbox3_setup_defaults(struct usb_device *dev) - static int snd_usb_mbox3_boot_quirk(struct usb_device *dev) - { - struct usb_host_config *config = dev->actconfig; -- struct usb_device_descriptor new_device_descriptor; -+ struct usb_device_descriptor *new_device_descriptor __free(kfree) = NULL; - int err; - int descriptor_size; - -@@ sound/usb/quirks.c: static int snd_usb_mbox3_boot_quirk(struct usb_device *dev) - - dev_dbg(&dev->dev, "MBOX3: device initialised!\n"); - -+ new_device_descriptor = kmalloc(sizeof(*new_device_descriptor), GFP_KERNEL); -+ if (!new_device_descriptor) -+ return -ENOMEM; -+ - err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, -- &new_device_descriptor, sizeof(new_device_descriptor)); -+ new_device_descriptor, sizeof(*new_device_descriptor)); - if (err < 0) - dev_dbg(&dev->dev, "MBOX3: error usb_get_descriptor: %d\n", err); -- if (new_device_descriptor.bNumConfigurations > dev->descriptor.bNumConfigurations) -+ if (new_device_descriptor->bNumConfigurations > dev->descriptor.bNumConfigurations) - dev_dbg(&dev->dev, "MBOX3: error too large bNumConfigurations: %d\n", -- new_device_descriptor.bNumConfigurations); -+ new_device_descriptor->bNumConfigurations); - else -- memcpy(&dev->descriptor, &new_device_descriptor, sizeof(dev->descriptor)); -+ memcpy(&dev->descriptor, new_device_descriptor, sizeof(dev->descriptor)); ++ kfree(new_device_descriptor);
err = usb_reset_configuration(dev); if (err < 0) ---
Results of testing on various branches:
| Branch | Patch Apply | Build Test | |---------------------------|-------------|------------| | stable/linux-5.4.y | Success | Success |