From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793802664; b=cofk/D3qJieQTcu0Doag4WUSmobOIVMuoAXOdClu5lNQtFjBlqSS9nz/+o5vEnSynoj+ v2N6EbZoZmcZQFXCXC48XAqAatiu7bTLx7g3+s2Ujh1FFD83TZd5LW6ddyT8ETAxKxekn 7B1l00XtbFFOoqC5dkJRx1jWy4dBDZLIDv7rODM8CZoeXfzxNTtOdpSxgkGJgpvd38oYp zm59NQQ0NxOpY+AKTnA+Na2uYRXAIzgBHf8LGdiAOa91r6u7R7nNPeuWmsYpFdnEi1N3c iS1ny3kfX64RrQmO8yFLdT2nBLXglrxtuQkWiycLCsfx2vCWr5rDsMRxdBK9ECbMs9w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793802664; h=Received:DKIM-Signature:Subject:To:Cc:From:Date:Message-ID: MIME-Version:Content-Type:Content-Transfer-Encoding; bh=T9isEb6lb/KAN+sVxkOnpq+g7t6DUc3iEPBhCVKM7D8=; b=F2d6i3gWPc3OHgHSqxTheoU2NSdYdvqE6JH+7WxrEZZTe1Gp5Rg5Yz2WVnekHxyAtxLA iyPQhXUDF/X3rzgbWLxHK3VZ3oDDjxpJQVJog2h3HiGi5r3z680EqH/R22B8/LlSkAqSv qhe3sBSJwIf6B2IiLQYIu2P/MutbLc8SW5YoDEcF537m5xkk7lYCETYYVRMbyhxjlw6hc OjbmYlHkEuS68Pc+f0NbXEirScoKy1JAeY1L9GMKHRgu8zJuZZ/jxn1rELm+TYuOP97i0 g+4JyOfRCtGQ8i7zTI6IUwCTrX7OAfa0lHr1Ps4wvd2pZv8nFwASeM2BAJINgBv0ePw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=EIVtuUJr; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 72028606A31B for ; Wed, 4 Nov 2026 14:31:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=EIVtuUJr Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0413F1F000C1; Wed, 4 Nov 2026 14:31:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793802664; bh=T9isEb6lb/KAN+sVxkOnpq+g7t6DUc3iEPBhCVKM7D8=; h=Subject:To:Cc:From:Date; b=EIVtuUJrhF7dmHHsljnGNwNvbZrHa7+pj4iC12jTLVi9YobG2iHViPSJ0HK2hwYF5 YValEuJsoEP9L6CvwrSSGtx4z1BjXn9f5J4gTsaG/NXVumX8j/tz5dIbzBNmLo8J/S lHvEu89xN3j17OFJRqiTkSN+2kPRU28lPfxAzYIs= Subject: FAILED: patch "[PATCH] media: rc: Fix race between bpf(BPG_PROG_ATTACH) and device" failed to apply to 6.6-stable tree To: sean@mess.org,hverkuil+cisco@kernel.org Cc: From: Date: Wed, 04 Nov 2026 15:30:55 +0100 Message-ID: <2026110455-abacus-sitting-9c3b@gregkh> X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x b3f5daf3222999d3f92f606a4eb5e35ab90fd0e4 # git commit -s git send-email --to '' --in-reply-to '2026110455-abacus-sitting-9c3b@gregkh' --subject-prefix 'PATCH 6.6.y' 'HEAD^..' Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From b3f5daf3222999d3f92f606a4eb5e35ab90fd0e4 Mon Sep 17 00:00:00 2001 From: Sean Young Date: Tue, 1 Sep 2026 10:34:51 +0100 Subject: [PATCH] media: rc: Fix race between bpf(BPG_PROG_ATTACH) and device unregister Mark the device as unregistered before tearing down raw IR/bpf state, so that racing bpf(BPF_PROG_{ATTACH,DETACH,QUERY}) calls cannot slip in between ir_raw_event_unregister() completing and dev->registered being cleared. Fixes: dccc0c3ddf8f ("media: rc: fix race between unregister and urb/irq callbacks") Signed-off-by: Sean Young Cc: stable@vger.kernel.org Acked-by: Hans Verkuil diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c index 67d86b8ea5e0..37ba19164875 100644 --- a/drivers/media/rc/rc-main.c +++ b/drivers/media/rc/rc-main.c @@ -2056,18 +2056,18 @@ void rc_unregister_device(struct rc_dev *dev) if (!dev) return; + mutex_lock(&dev->lock); + dev->registered = false; + if (dev->users && dev->close) + dev->close(dev); + mutex_unlock(&dev->lock); + if (dev->driver_type == RC_DRIVER_IR_RAW) ir_raw_event_unregister(dev); timer_delete_sync(&dev->timer_keyup); timer_delete_sync(&dev->timer_repeat); - mutex_lock(&dev->lock); - if (dev->users && dev->close) - dev->close(dev); - dev->registered = false; - mutex_unlock(&dev->lock); - rc_free_rx_device(dev); /*