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Tue, 13 Dec 2022 06:36:01 -0800 (PST) Received: from alco.roam.corp.google.com ([100.104.168.209]) by smtp.gmail.com with ESMTPSA id kv17-20020a17090778d100b00781dbdb292asm4613960ejc.155.2022.12.13.06.36.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Dec 2022 06:36:01 -0800 (PST) Subject: [PATCH v2 0/2] uvc: Fix race condition on uvc MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIALGNmGMC/22MwQrCMBBEf6Xs2ZUmxbZ68j/EQ7pdm0CbwMYGpO TfXTzLHIY3zMwBmSVwhltzgHAJOaSoYE8NkHdxYQyzMtjWWqPCvRCKI8b2aoeeXT9OrxG0PrnMOI mL5HUQ93XV0If8TvL53Rej9vjzVAy2SBfLZhg76sx8Jy9pC/t2TrLAs9b6BazsgwqoAAAA From: Ricardo Ribalda Date: Tue, 13 Dec 2022 15:35:29 +0100 Message-Id: <20221212-uvc-race-v2-0-54496cc3b8ab@chromium.org> To: Max Staudt , Sergey Senozhatsky , Yunke Cao , Laurent Pinchart , Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, stable@vger.kernel.org, linux-kernel@vger.kernel.org, Ricardo Ribalda X-Mailer: b4 0.11.0-dev-696ae X-Developer-Signature: v=1; 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a=openpgp; fpr=9EC3BB66E2FC129A6F90B39556A0D81F9F782DA9 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Make sure that all the async work is finished when we stop the status urb. To: Yunke Cao To: Sergey Senozhatsky To: Max Staudt To: Laurent Pinchart To: Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Ricardo Ribalda --- Changes in v2: - Add a patch for not kalloc dev->status - Redo the logic mechanism, so it also works with suspend (Thanks Yunke!) - Link to v1: https://lore.kernel.org/r/20221212-uvc-race-v1-0-c52e1783c31d@chromium.org --- Ricardo Ribalda (2): media: uvcvideo: Fix race condition with usb_kill_urb media: uvcvideo: Do not alloc dev->status drivers/media/usb/uvc/uvc_ctrl.c | 3 +++ drivers/media/usb/uvc/uvc_status.c | 15 +++++++-------- drivers/media/usb/uvc/uvcvideo.h | 3 ++- 3 files changed, 12 insertions(+), 9 deletions(-) --- base-commit: 0ec5a38bf8499f403f81cb81a0e3a60887d1993c change-id: 20221212-uvc-race-09276ea68bf8 Best regards, -- Ricardo Ribalda