May 2024 - Linux-stable-mirror

FAILED: patch "[PATCH] Bluetooth: qca: fix firmware check error path" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-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 <stable(a)vger.kernel.org>. 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-5.10.y git checkout FETCH_HEAD git cherry-pick -x 40d442f969fb1e871da6fca73d3f8aef1f888558 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051320-majority-visiting-2bf1@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: 40d442f969fb ("Bluetooth: qca: fix firmware check error path") 2e4edfa1e2bd ("Bluetooth: qca: add missing firmware sanity checks") ecf6b2d95666 ("Bluetooth: btqca: Add support for firmware image with mbn type for WCN6750") d8f97da1b92d ("Bluetooth: hci_qca: Add support for QTI Bluetooth chip wcn6750") b43ca511178e ("Bluetooth: btqca: Don't modify firmware contents in-place") c1a74160eaf1 ("Bluetooth: hci_qca: Add device_may_wakeup support") eaf19b0c47d1 ("Bluetooth: btqca: Enable MSFT extension for Qualcomm WCN399x") c0187b0bd3e9 ("Bluetooth: btqca: Add support to read FW build version for WCN3991 BTSoC") 99719449a4a6 ("Bluetooth: hci_qca: resolve various warnings") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 40d442f969fb1e871da6fca73d3f8aef1f888558 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan+linaro(a)kernel.org> Date: Wed, 1 May 2024 08:37:40 +0200 Subject: [PATCH] Bluetooth: qca: fix firmware check error path A recent commit fixed the code that parses the firmware files before downloading them to the controller but introduced a memory leak in case the sanity checks ever fail. Make sure to free the firmware buffer before returning on errors. Fixes: f905ae0be4b7 ("Bluetooth: qca: add missing firmware sanity checks") Cc: stable(a)vger.kernel.org # 4.19 Signed-off-by: Johan Hovold <johan+linaro(a)kernel.org> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c index 8d8a664620a3..638074992c82 100644 --- a/drivers/bluetooth/btqca.c +++ b/drivers/bluetooth/btqca.c @@ -605,7 +605,7 @@ static int qca_download_firmware(struct hci_dev *hdev, ret = qca_tlv_check_data(hdev, config, data, size, soc_type); if (ret) - return ret; + goto out; segment = data; remain = size;

7 months, 3 weeks

1
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FAILED: patch "[PATCH] Bluetooth: qca: fix info leak when fetching fw build id" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-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 <stable(a)vger.kernel.org>. 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-5.15.y git checkout FETCH_HEAD git cherry-pick -x cda0d6a198e2a7ec6f176c36173a57bdd8af7af2 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051300-commute-overall-7fed@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: cda0d6a198e2 ("Bluetooth: qca: fix info leak when fetching fw build id") a7f8dedb4be2 ("Bluetooth: qca: add support for QCA2066") 691d54d0f7cb ("Bluetooth: qca: use switch case for soc type behavior") f904feefe60c ("Bluetooth: btqca: Add WCN3988 support") 8153b738bc54 ("Bluetooth: btqca: use le32_to_cpu for ver.soc_id") 095327fede00 ("Bluetooth: hci_qca: Add support for QTI Bluetooth chip wcn6855") 44fac8a2fd2f ("Bluetooth: hci_qca: mark OF related data as maybe unused") 6845667146a2 ("Bluetooth: hci_qca: Fix NULL vs IS_ERR_OR_NULL check in qca_serdev_probe") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From cda0d6a198e2a7ec6f176c36173a57bdd8af7af2 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan+linaro(a)kernel.org> Date: Wed, 1 May 2024 14:34:52 +0200 Subject: [PATCH] Bluetooth: qca: fix info leak when fetching fw build id Add the missing sanity checks and move the 255-byte build-id buffer off the stack to avoid leaking stack data through debugfs in case the build-info reply is malformed. Fixes: c0187b0bd3e9 ("Bluetooth: btqca: Add support to read FW build version for WCN3991 BTSoC") Cc: stable(a)vger.kernel.org # 5.12 Signed-off-by: Johan Hovold <johan+linaro(a)kernel.org> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c index c6b2dd4d1716..664db524b1dd 100644 --- a/drivers/bluetooth/btqca.c +++ b/drivers/bluetooth/btqca.c @@ -99,7 +99,8 @@ static int qca_read_fw_build_info(struct hci_dev *hdev) { struct sk_buff *skb; struct edl_event_hdr *edl; - char cmd, build_label[QCA_FW_BUILD_VER_LEN]; + char *build_label; + char cmd; int build_lbl_len, err = 0; bt_dev_dbg(hdev, "QCA read fw build info"); @@ -114,6 +115,11 @@ static int qca_read_fw_build_info(struct hci_dev *hdev) return err; } + if (skb->len < sizeof(*edl)) { + err = -EILSEQ; + goto out; + } + edl = (struct edl_event_hdr *)(skb->data); if (!edl) { bt_dev_err(hdev, "QCA read fw build info with no header"); @@ -129,14 +135,25 @@ static int qca_read_fw_build_info(struct hci_dev *hdev) goto out; } - build_lbl_len = edl->data[0]; - if (build_lbl_len <= QCA_FW_BUILD_VER_LEN - 1) { - memcpy(build_label, edl->data + 1, build_lbl_len); - *(build_label + build_lbl_len) = '\0'; + if (skb->len < sizeof(*edl) + 1) { + err = -EILSEQ; + goto out; } + build_lbl_len = edl->data[0]; + + if (skb->len < sizeof(*edl) + 1 + build_lbl_len) { + err = -EILSEQ; + goto out; + } + + build_label = kstrndup(&edl->data[1], build_lbl_len, GFP_KERNEL); + if (!build_label) + goto out; + hci_set_fw_info(hdev, "%s", build_label); + kfree(build_label); out: kfree_skb(skb); return err; diff --git a/drivers/bluetooth/btqca.h b/drivers/bluetooth/btqca.h index 49ad668d0d0b..215433fd76a1 100644 --- a/drivers/bluetooth/btqca.h +++ b/drivers/bluetooth/btqca.h @@ -48,7 +48,6 @@ #define get_soc_ver(soc_id, rom_ver) \ ((le32_to_cpu(soc_id) << 16) | (le16_to_cpu(rom_ver))) -#define QCA_FW_BUILD_VER_LEN 255 #define QCA_HSP_GF_SOC_ID 0x1200 #define QCA_HSP_GF_SOC_MASK 0x0000ff00

7 months, 3 weeks

1
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FAILED: patch "[PATCH] Bluetooth: qca: fix NVM configuration parsing" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-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 <stable(a)vger.kernel.org>. 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-4.19.y git checkout FETCH_HEAD git cherry-pick -x a112d3c72a227f2edbb6d8094472cc6e503e52af # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051301-untwist-vertical-ba65@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^.. Possible dependencies: a112d3c72a22 ("Bluetooth: qca: fix NVM configuration parsing") 2e4edfa1e2bd ("Bluetooth: qca: add missing firmware sanity checks") ecf6b2d95666 ("Bluetooth: btqca: Add support for firmware image with mbn type for WCN6750") d8f97da1b92d ("Bluetooth: hci_qca: Add support for QTI Bluetooth chip wcn6750") b43ca511178e ("Bluetooth: btqca: Don't modify firmware contents in-place") c1a74160eaf1 ("Bluetooth: hci_qca: Add device_may_wakeup support") eaf19b0c47d1 ("Bluetooth: btqca: Enable MSFT extension for Qualcomm WCN399x") c0187b0bd3e9 ("Bluetooth: btqca: Add support to read FW build version for WCN3991 BTSoC") 99719449a4a6 ("Bluetooth: hci_qca: resolve various warnings") 054ec5e94a46 ("Bluetooth: hci_qca: Remove duplicate power off in proto close") 590deccf4c06 ("Bluetooth: hci_qca: Disable SoC debug logging for WCN3991") 37aee136f8c4 ("Bluetooth: hci_qca: allow max-speed to be set for QCA9377 devices") e5d6468fe9d8 ("Bluetooth: hci_qca: Add support for Qualcomm Bluetooth SoC QCA6390") 77131dfec6af ("Bluetooth: hci_qca: Replace devm_gpiod_get() with devm_gpiod_get_optional()") 8a208b24d770 ("Bluetooth: hci_qca: Make bt_en and susclk not mandatory for QCA Rome") b63882549b2b ("Bluetooth: btqca: Fix the NVM baudrate tag offcet for wcn3991") 4f9ed5bd63dc ("Bluetooth: hci_qca: Not send vendor pre-shutdown command for QCA Rome") 66cb70513564 ("Bluetooth: hci_qca: Enable clocks required for BT SOC") ae563183b647 ("Bluetooth: hci_qca: Enable power off/on support during hci down/up for QCA Rome") 5559904ccc08 ("Bluetooth: hci_qca: Add QCA Rome power off support to the qca_power_shutdown()") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a112d3c72a227f2edbb6d8094472cc6e503e52af Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan+linaro(a)kernel.org> Date: Tue, 30 Apr 2024 19:07:40 +0200 Subject: [PATCH] Bluetooth: qca: fix NVM configuration parsing The NVM configuration files used by WCN3988 and WCN3990/1/8 have two sets of configuration tags that are enclosed by a type-length header of type four which the current parser fails to account for. Instead the driver happily parses random data as if it were valid tags, something which can lead to the configuration data being corrupted if it ever encounters the words 0x0011 or 0x001b. As is clear from commit b63882549b2b ("Bluetooth: btqca: Fix the NVM baudrate tag offcet for wcn3991") the intention has always been to process the configuration data also for WCN3991 and WCN3998 which encodes the baud rate at a different offset. Fix the parser so that it can handle the WCN3xxx configuration files, which has an enclosing type-length header of type four and two sets of TLV tags enclosed by a type-length header of type two and three, respectively. Note that only the first set, which contains the tags the driver is currently looking for, will be parsed for now. With the parser fixed, the software in-band sleep bit will now be set for WCN3991 and WCN3998 (as it is for later controllers) and the default baud rate 3200000 may be updated by the driver also for WCN3xxx controllers. Notably the deep-sleep feature bit is already set by default in all configuration files in linux-firmware. Fixes: 4219d4686875 ("Bluetooth: btqca: Add wcn3990 firmware download support.") Cc: stable(a)vger.kernel.org # 4.19 Cc: Matthias Kaehlcke <mka(a)chromium.org> Signed-off-by: Johan Hovold <johan+linaro(a)kernel.org> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c index 6743b0a79d7a..f6c9f89a6311 100644 --- a/drivers/bluetooth/btqca.c +++ b/drivers/bluetooth/btqca.c @@ -281,6 +281,7 @@ static int qca_tlv_check_data(struct hci_dev *hdev, struct tlv_type_patch *tlv_patch; struct tlv_type_nvm *tlv_nvm; uint8_t nvm_baud_rate = config->user_baud_rate; + u8 type; config->dnld_mode = QCA_SKIP_EVT_NONE; config->dnld_type = QCA_SKIP_EVT_NONE; @@ -346,11 +347,30 @@ static int qca_tlv_check_data(struct hci_dev *hdev, tlv = (struct tlv_type_hdr *)fw_data; type_len = le32_to_cpu(tlv->type_len); - length = (type_len >> 8) & 0x00ffffff; + length = type_len >> 8; + type = type_len & 0xff; - BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff); + /* Some NVM files have more than one set of tags, only parse + * the first set when it has type 2 for now. When there is + * more than one set there is an enclosing header of type 4. + */ + if (type == 4) { + if (fw_size < 2 * sizeof(struct tlv_type_hdr)) + return -EINVAL; + + tlv++; + + type_len = le32_to_cpu(tlv->type_len); + length = type_len >> 8; + type = type_len & 0xff; + } + + BT_DBG("TLV Type\t\t : 0x%x", type); BT_DBG("Length\t\t : %d bytes", length); + if (type != 2) + break; + if (fw_size < length + (tlv->data - fw_data)) return -EINVAL;

7 months, 3 weeks

1
0
0 0

FAILED: patch "[PATCH] Bluetooth: qca: fix NVM configuration parsing" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-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 <stable(a)vger.kernel.org>. 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-5.4.y git checkout FETCH_HEAD git cherry-pick -x a112d3c72a227f2edbb6d8094472cc6e503e52af # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051359-refueling-alienable-65c1@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: a112d3c72a22 ("Bluetooth: qca: fix NVM configuration parsing") 2e4edfa1e2bd ("Bluetooth: qca: add missing firmware sanity checks") ecf6b2d95666 ("Bluetooth: btqca: Add support for firmware image with mbn type for WCN6750") d8f97da1b92d ("Bluetooth: hci_qca: Add support for QTI Bluetooth chip wcn6750") b43ca511178e ("Bluetooth: btqca: Don't modify firmware contents in-place") c1a74160eaf1 ("Bluetooth: hci_qca: Add device_may_wakeup support") eaf19b0c47d1 ("Bluetooth: btqca: Enable MSFT extension for Qualcomm WCN399x") c0187b0bd3e9 ("Bluetooth: btqca: Add support to read FW build version for WCN3991 BTSoC") 99719449a4a6 ("Bluetooth: hci_qca: resolve various warnings") 054ec5e94a46 ("Bluetooth: hci_qca: Remove duplicate power off in proto close") 590deccf4c06 ("Bluetooth: hci_qca: Disable SoC debug logging for WCN3991") 37aee136f8c4 ("Bluetooth: hci_qca: allow max-speed to be set for QCA9377 devices") e5d6468fe9d8 ("Bluetooth: hci_qca: Add support for Qualcomm Bluetooth SoC QCA6390") 77131dfec6af ("Bluetooth: hci_qca: Replace devm_gpiod_get() with devm_gpiod_get_optional()") 8a208b24d770 ("Bluetooth: hci_qca: Make bt_en and susclk not mandatory for QCA Rome") b63882549b2b ("Bluetooth: btqca: Fix the NVM baudrate tag offcet for wcn3991") 4f9ed5bd63dc ("Bluetooth: hci_qca: Not send vendor pre-shutdown command for QCA Rome") 66cb70513564 ("Bluetooth: hci_qca: Enable clocks required for BT SOC") ae563183b647 ("Bluetooth: hci_qca: Enable power off/on support during hci down/up for QCA Rome") 5559904ccc08 ("Bluetooth: hci_qca: Add QCA Rome power off support to the qca_power_shutdown()") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a112d3c72a227f2edbb6d8094472cc6e503e52af Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan+linaro(a)kernel.org> Date: Tue, 30 Apr 2024 19:07:40 +0200 Subject: [PATCH] Bluetooth: qca: fix NVM configuration parsing The NVM configuration files used by WCN3988 and WCN3990/1/8 have two sets of configuration tags that are enclosed by a type-length header of type four which the current parser fails to account for. Instead the driver happily parses random data as if it were valid tags, something which can lead to the configuration data being corrupted if it ever encounters the words 0x0011 or 0x001b. As is clear from commit b63882549b2b ("Bluetooth: btqca: Fix the NVM baudrate tag offcet for wcn3991") the intention has always been to process the configuration data also for WCN3991 and WCN3998 which encodes the baud rate at a different offset. Fix the parser so that it can handle the WCN3xxx configuration files, which has an enclosing type-length header of type four and two sets of TLV tags enclosed by a type-length header of type two and three, respectively. Note that only the first set, which contains the tags the driver is currently looking for, will be parsed for now. With the parser fixed, the software in-band sleep bit will now be set for WCN3991 and WCN3998 (as it is for later controllers) and the default baud rate 3200000 may be updated by the driver also for WCN3xxx controllers. Notably the deep-sleep feature bit is already set by default in all configuration files in linux-firmware. Fixes: 4219d4686875 ("Bluetooth: btqca: Add wcn3990 firmware download support.") Cc: stable(a)vger.kernel.org # 4.19 Cc: Matthias Kaehlcke <mka(a)chromium.org> Signed-off-by: Johan Hovold <johan+linaro(a)kernel.org> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c index 6743b0a79d7a..f6c9f89a6311 100644 --- a/drivers/bluetooth/btqca.c +++ b/drivers/bluetooth/btqca.c @@ -281,6 +281,7 @@ static int qca_tlv_check_data(struct hci_dev *hdev, struct tlv_type_patch *tlv_patch; struct tlv_type_nvm *tlv_nvm; uint8_t nvm_baud_rate = config->user_baud_rate; + u8 type; config->dnld_mode = QCA_SKIP_EVT_NONE; config->dnld_type = QCA_SKIP_EVT_NONE; @@ -346,11 +347,30 @@ static int qca_tlv_check_data(struct hci_dev *hdev, tlv = (struct tlv_type_hdr *)fw_data; type_len = le32_to_cpu(tlv->type_len); - length = (type_len >> 8) & 0x00ffffff; + length = type_len >> 8; + type = type_len & 0xff; - BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff); + /* Some NVM files have more than one set of tags, only parse + * the first set when it has type 2 for now. When there is + * more than one set there is an enclosing header of type 4. + */ + if (type == 4) { + if (fw_size < 2 * sizeof(struct tlv_type_hdr)) + return -EINVAL; + + tlv++; + + type_len = le32_to_cpu(tlv->type_len); + length = type_len >> 8; + type = type_len & 0xff; + } + + BT_DBG("TLV Type\t\t : 0x%x", type); BT_DBG("Length\t\t : %d bytes", length); + if (type != 2) + break; + if (fw_size < length + (tlv->data - fw_data)) return -EINVAL;

7 months, 3 weeks

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FAILED: patch "[PATCH] Bluetooth: qca: fix NVM configuration parsing" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-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 <stable(a)vger.kernel.org>. 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-5.10.y git checkout FETCH_HEAD git cherry-pick -x a112d3c72a227f2edbb6d8094472cc6e503e52af # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051358-overplant-spent-f520@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: a112d3c72a22 ("Bluetooth: qca: fix NVM configuration parsing") 2e4edfa1e2bd ("Bluetooth: qca: add missing firmware sanity checks") ecf6b2d95666 ("Bluetooth: btqca: Add support for firmware image with mbn type for WCN6750") d8f97da1b92d ("Bluetooth: hci_qca: Add support for QTI Bluetooth chip wcn6750") b43ca511178e ("Bluetooth: btqca: Don't modify firmware contents in-place") c1a74160eaf1 ("Bluetooth: hci_qca: Add device_may_wakeup support") eaf19b0c47d1 ("Bluetooth: btqca: Enable MSFT extension for Qualcomm WCN399x") c0187b0bd3e9 ("Bluetooth: btqca: Add support to read FW build version for WCN3991 BTSoC") 99719449a4a6 ("Bluetooth: hci_qca: resolve various warnings") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a112d3c72a227f2edbb6d8094472cc6e503e52af Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan+linaro(a)kernel.org> Date: Tue, 30 Apr 2024 19:07:40 +0200 Subject: [PATCH] Bluetooth: qca: fix NVM configuration parsing The NVM configuration files used by WCN3988 and WCN3990/1/8 have two sets of configuration tags that are enclosed by a type-length header of type four which the current parser fails to account for. Instead the driver happily parses random data as if it were valid tags, something which can lead to the configuration data being corrupted if it ever encounters the words 0x0011 or 0x001b. As is clear from commit b63882549b2b ("Bluetooth: btqca: Fix the NVM baudrate tag offcet for wcn3991") the intention has always been to process the configuration data also for WCN3991 and WCN3998 which encodes the baud rate at a different offset. Fix the parser so that it can handle the WCN3xxx configuration files, which has an enclosing type-length header of type four and two sets of TLV tags enclosed by a type-length header of type two and three, respectively. Note that only the first set, which contains the tags the driver is currently looking for, will be parsed for now. With the parser fixed, the software in-band sleep bit will now be set for WCN3991 and WCN3998 (as it is for later controllers) and the default baud rate 3200000 may be updated by the driver also for WCN3xxx controllers. Notably the deep-sleep feature bit is already set by default in all configuration files in linux-firmware. Fixes: 4219d4686875 ("Bluetooth: btqca: Add wcn3990 firmware download support.") Cc: stable(a)vger.kernel.org # 4.19 Cc: Matthias Kaehlcke <mka(a)chromium.org> Signed-off-by: Johan Hovold <johan+linaro(a)kernel.org> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c index 6743b0a79d7a..f6c9f89a6311 100644 --- a/drivers/bluetooth/btqca.c +++ b/drivers/bluetooth/btqca.c @@ -281,6 +281,7 @@ static int qca_tlv_check_data(struct hci_dev *hdev, struct tlv_type_patch *tlv_patch; struct tlv_type_nvm *tlv_nvm; uint8_t nvm_baud_rate = config->user_baud_rate; + u8 type; config->dnld_mode = QCA_SKIP_EVT_NONE; config->dnld_type = QCA_SKIP_EVT_NONE; @@ -346,11 +347,30 @@ static int qca_tlv_check_data(struct hci_dev *hdev, tlv = (struct tlv_type_hdr *)fw_data; type_len = le32_to_cpu(tlv->type_len); - length = (type_len >> 8) & 0x00ffffff; + length = type_len >> 8; + type = type_len & 0xff; - BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff); + /* Some NVM files have more than one set of tags, only parse + * the first set when it has type 2 for now. When there is + * more than one set there is an enclosing header of type 4. + */ + if (type == 4) { + if (fw_size < 2 * sizeof(struct tlv_type_hdr)) + return -EINVAL; + + tlv++; + + type_len = le32_to_cpu(tlv->type_len); + length = type_len >> 8; + type = type_len & 0xff; + } + + BT_DBG("TLV Type\t\t : 0x%x", type); BT_DBG("Length\t\t : %d bytes", length); + if (type != 2) + break; + if (fw_size < length + (tlv->data - fw_data)) return -EINVAL;

7 months, 3 weeks

1
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FAILED: patch "[PATCH] Bluetooth: qca: add missing firmware sanity checks" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-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 <stable(a)vger.kernel.org>. 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-4.19.y git checkout FETCH_HEAD git cherry-pick -x 2e4edfa1e2bd821a317e7d006517dcf2f3fac68d # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051339-establish-mollusk-f612@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^.. Possible dependencies: 2e4edfa1e2bd ("Bluetooth: qca: add missing firmware sanity checks") ecf6b2d95666 ("Bluetooth: btqca: Add support for firmware image with mbn type for WCN6750") d8f97da1b92d ("Bluetooth: hci_qca: Add support for QTI Bluetooth chip wcn6750") b43ca511178e ("Bluetooth: btqca: Don't modify firmware contents in-place") c1a74160eaf1 ("Bluetooth: hci_qca: Add device_may_wakeup support") eaf19b0c47d1 ("Bluetooth: btqca: Enable MSFT extension for Qualcomm WCN399x") c0187b0bd3e9 ("Bluetooth: btqca: Add support to read FW build version for WCN3991 BTSoC") 99719449a4a6 ("Bluetooth: hci_qca: resolve various warnings") 054ec5e94a46 ("Bluetooth: hci_qca: Remove duplicate power off in proto close") 590deccf4c06 ("Bluetooth: hci_qca: Disable SoC debug logging for WCN3991") 37aee136f8c4 ("Bluetooth: hci_qca: allow max-speed to be set for QCA9377 devices") e5d6468fe9d8 ("Bluetooth: hci_qca: Add support for Qualcomm Bluetooth SoC QCA6390") 77131dfec6af ("Bluetooth: hci_qca: Replace devm_gpiod_get() with devm_gpiod_get_optional()") 8a208b24d770 ("Bluetooth: hci_qca: Make bt_en and susclk not mandatory for QCA Rome") b63882549b2b ("Bluetooth: btqca: Fix the NVM baudrate tag offcet for wcn3991") 4f9ed5bd63dc ("Bluetooth: hci_qca: Not send vendor pre-shutdown command for QCA Rome") 66cb70513564 ("Bluetooth: hci_qca: Enable clocks required for BT SOC") ae563183b647 ("Bluetooth: hci_qca: Enable power off/on support during hci down/up for QCA Rome") 5559904ccc08 ("Bluetooth: hci_qca: Add QCA Rome power off support to the qca_power_shutdown()") 5e6d8401ade9 ("Bluetooth: hci_qca: Add qca_power_on() API to support both wcn399x and Rome power up") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 2e4edfa1e2bd821a317e7d006517dcf2f3fac68d Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan+linaro(a)kernel.org> Date: Tue, 30 Apr 2024 19:07:39 +0200 Subject: [PATCH] Bluetooth: qca: add missing firmware sanity checks Add the missing sanity checks when parsing the firmware files before downloading them to avoid accessing and corrupting memory beyond the vmalloced buffer. Fixes: 83e81961ff7e ("Bluetooth: btqca: Introduce generic QCA ROME support") Cc: stable(a)vger.kernel.org # 4.10 Signed-off-by: Johan Hovold <johan+linaro(a)kernel.org> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c index cfa71708397b..6743b0a79d7a 100644 --- a/drivers/bluetooth/btqca.c +++ b/drivers/bluetooth/btqca.c @@ -268,9 +268,10 @@ int qca_send_pre_shutdown_cmd(struct hci_dev *hdev) } EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd); -static void qca_tlv_check_data(struct hci_dev *hdev, +static int qca_tlv_check_data(struct hci_dev *hdev, struct qca_fw_config *config, - u8 *fw_data, enum qca_btsoc_type soc_type) + u8 *fw_data, size_t fw_size, + enum qca_btsoc_type soc_type) { const u8 *data; u32 type_len; @@ -286,6 +287,9 @@ static void qca_tlv_check_data(struct hci_dev *hdev, switch (config->type) { case ELF_TYPE_PATCH: + if (fw_size < 7) + return -EINVAL; + config->dnld_mode = QCA_SKIP_EVT_VSE_CC; config->dnld_type = QCA_SKIP_EVT_VSE_CC; @@ -294,6 +298,9 @@ static void qca_tlv_check_data(struct hci_dev *hdev, bt_dev_dbg(hdev, "File version : 0x%x", fw_data[6]); break; case TLV_TYPE_PATCH: + if (fw_size < sizeof(struct tlv_type_hdr) + sizeof(struct tlv_type_patch)) + return -EINVAL; + tlv = (struct tlv_type_hdr *)fw_data; type_len = le32_to_cpu(tlv->type_len); tlv_patch = (struct tlv_type_patch *)tlv->data; @@ -333,6 +340,9 @@ static void qca_tlv_check_data(struct hci_dev *hdev, break; case TLV_TYPE_NVM: + if (fw_size < sizeof(struct tlv_type_hdr)) + return -EINVAL; + tlv = (struct tlv_type_hdr *)fw_data; type_len = le32_to_cpu(tlv->type_len); @@ -341,17 +351,26 @@ static void qca_tlv_check_data(struct hci_dev *hdev, BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff); BT_DBG("Length\t\t : %d bytes", length); + if (fw_size < length + (tlv->data - fw_data)) + return -EINVAL; + idx = 0; data = tlv->data; - while (idx < length) { + while (idx < length - sizeof(struct tlv_type_nvm)) { tlv_nvm = (struct tlv_type_nvm *)(data + idx); tag_id = le16_to_cpu(tlv_nvm->tag_id); tag_len = le16_to_cpu(tlv_nvm->tag_len); + if (length < idx + sizeof(struct tlv_type_nvm) + tag_len) + return -EINVAL; + /* Update NVM tags as needed */ switch (tag_id) { case EDL_TAG_ID_HCI: + if (tag_len < 3) + return -EINVAL; + /* HCI transport layer parameters * enabling software inband sleep * onto controller side. @@ -367,6 +386,9 @@ static void qca_tlv_check_data(struct hci_dev *hdev, break; case EDL_TAG_ID_DEEP_SLEEP: + if (tag_len < 1) + return -EINVAL; + /* Sleep enable mask * enabling deep sleep feature on controller. */ @@ -375,14 +397,16 @@ static void qca_tlv_check_data(struct hci_dev *hdev, break; } - idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len); + idx += sizeof(struct tlv_type_nvm) + tag_len; } break; default: BT_ERR("Unknown TLV type %d", config->type); - break; + return -EINVAL; } + + return 0; } static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size, @@ -532,7 +556,9 @@ static int qca_download_firmware(struct hci_dev *hdev, memcpy(data, fw->data, size); release_firmware(fw); - qca_tlv_check_data(hdev, config, data, soc_type); + ret = qca_tlv_check_data(hdev, config, data, size, soc_type); + if (ret) + return ret; segment = data; remain = size;

7 months, 3 weeks

1
0
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FAILED: patch "[PATCH] Bluetooth: qca: add missing firmware sanity checks" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-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 <stable(a)vger.kernel.org>. 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-5.4.y git checkout FETCH_HEAD git cherry-pick -x 2e4edfa1e2bd821a317e7d006517dcf2f3fac68d # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051338-imitate-encrust-796c@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: 2e4edfa1e2bd ("Bluetooth: qca: add missing firmware sanity checks") ecf6b2d95666 ("Bluetooth: btqca: Add support for firmware image with mbn type for WCN6750") d8f97da1b92d ("Bluetooth: hci_qca: Add support for QTI Bluetooth chip wcn6750") b43ca511178e ("Bluetooth: btqca: Don't modify firmware contents in-place") c1a74160eaf1 ("Bluetooth: hci_qca: Add device_may_wakeup support") eaf19b0c47d1 ("Bluetooth: btqca: Enable MSFT extension for Qualcomm WCN399x") c0187b0bd3e9 ("Bluetooth: btqca: Add support to read FW build version for WCN3991 BTSoC") 99719449a4a6 ("Bluetooth: hci_qca: resolve various warnings") 054ec5e94a46 ("Bluetooth: hci_qca: Remove duplicate power off in proto close") 590deccf4c06 ("Bluetooth: hci_qca: Disable SoC debug logging for WCN3991") 37aee136f8c4 ("Bluetooth: hci_qca: allow max-speed to be set for QCA9377 devices") e5d6468fe9d8 ("Bluetooth: hci_qca: Add support for Qualcomm Bluetooth SoC QCA6390") 77131dfec6af ("Bluetooth: hci_qca: Replace devm_gpiod_get() with devm_gpiod_get_optional()") 8a208b24d770 ("Bluetooth: hci_qca: Make bt_en and susclk not mandatory for QCA Rome") b63882549b2b ("Bluetooth: btqca: Fix the NVM baudrate tag offcet for wcn3991") 4f9ed5bd63dc ("Bluetooth: hci_qca: Not send vendor pre-shutdown command for QCA Rome") 66cb70513564 ("Bluetooth: hci_qca: Enable clocks required for BT SOC") ae563183b647 ("Bluetooth: hci_qca: Enable power off/on support during hci down/up for QCA Rome") 5559904ccc08 ("Bluetooth: hci_qca: Add QCA Rome power off support to the qca_power_shutdown()") 5e6d8401ade9 ("Bluetooth: hci_qca: Add qca_power_on() API to support both wcn399x and Rome power up") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 2e4edfa1e2bd821a317e7d006517dcf2f3fac68d Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan+linaro(a)kernel.org> Date: Tue, 30 Apr 2024 19:07:39 +0200 Subject: [PATCH] Bluetooth: qca: add missing firmware sanity checks Add the missing sanity checks when parsing the firmware files before downloading them to avoid accessing and corrupting memory beyond the vmalloced buffer. Fixes: 83e81961ff7e ("Bluetooth: btqca: Introduce generic QCA ROME support") Cc: stable(a)vger.kernel.org # 4.10 Signed-off-by: Johan Hovold <johan+linaro(a)kernel.org> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c index cfa71708397b..6743b0a79d7a 100644 --- a/drivers/bluetooth/btqca.c +++ b/drivers/bluetooth/btqca.c @@ -268,9 +268,10 @@ int qca_send_pre_shutdown_cmd(struct hci_dev *hdev) } EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd); -static void qca_tlv_check_data(struct hci_dev *hdev, +static int qca_tlv_check_data(struct hci_dev *hdev, struct qca_fw_config *config, - u8 *fw_data, enum qca_btsoc_type soc_type) + u8 *fw_data, size_t fw_size, + enum qca_btsoc_type soc_type) { const u8 *data; u32 type_len; @@ -286,6 +287,9 @@ static void qca_tlv_check_data(struct hci_dev *hdev, switch (config->type) { case ELF_TYPE_PATCH: + if (fw_size < 7) + return -EINVAL; + config->dnld_mode = QCA_SKIP_EVT_VSE_CC; config->dnld_type = QCA_SKIP_EVT_VSE_CC; @@ -294,6 +298,9 @@ static void qca_tlv_check_data(struct hci_dev *hdev, bt_dev_dbg(hdev, "File version : 0x%x", fw_data[6]); break; case TLV_TYPE_PATCH: + if (fw_size < sizeof(struct tlv_type_hdr) + sizeof(struct tlv_type_patch)) + return -EINVAL; + tlv = (struct tlv_type_hdr *)fw_data; type_len = le32_to_cpu(tlv->type_len); tlv_patch = (struct tlv_type_patch *)tlv->data; @@ -333,6 +340,9 @@ static void qca_tlv_check_data(struct hci_dev *hdev, break; case TLV_TYPE_NVM: + if (fw_size < sizeof(struct tlv_type_hdr)) + return -EINVAL; + tlv = (struct tlv_type_hdr *)fw_data; type_len = le32_to_cpu(tlv->type_len); @@ -341,17 +351,26 @@ static void qca_tlv_check_data(struct hci_dev *hdev, BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff); BT_DBG("Length\t\t : %d bytes", length); + if (fw_size < length + (tlv->data - fw_data)) + return -EINVAL; + idx = 0; data = tlv->data; - while (idx < length) { + while (idx < length - sizeof(struct tlv_type_nvm)) { tlv_nvm = (struct tlv_type_nvm *)(data + idx); tag_id = le16_to_cpu(tlv_nvm->tag_id); tag_len = le16_to_cpu(tlv_nvm->tag_len); + if (length < idx + sizeof(struct tlv_type_nvm) + tag_len) + return -EINVAL; + /* Update NVM tags as needed */ switch (tag_id) { case EDL_TAG_ID_HCI: + if (tag_len < 3) + return -EINVAL; + /* HCI transport layer parameters * enabling software inband sleep * onto controller side. @@ -367,6 +386,9 @@ static void qca_tlv_check_data(struct hci_dev *hdev, break; case EDL_TAG_ID_DEEP_SLEEP: + if (tag_len < 1) + return -EINVAL; + /* Sleep enable mask * enabling deep sleep feature on controller. */ @@ -375,14 +397,16 @@ static void qca_tlv_check_data(struct hci_dev *hdev, break; } - idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len); + idx += sizeof(struct tlv_type_nvm) + tag_len; } break; default: BT_ERR("Unknown TLV type %d", config->type); - break; + return -EINVAL; } + + return 0; } static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size, @@ -532,7 +556,9 @@ static int qca_download_firmware(struct hci_dev *hdev, memcpy(data, fw->data, size); release_firmware(fw); - qca_tlv_check_data(hdev, config, data, soc_type); + ret = qca_tlv_check_data(hdev, config, data, size, soc_type); + if (ret) + return ret; segment = data; remain = size;

7 months, 3 weeks

1
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FAILED: patch "[PATCH] Bluetooth: qca: add missing firmware sanity checks" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-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 <stable(a)vger.kernel.org>. 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-5.10.y git checkout FETCH_HEAD git cherry-pick -x 2e4edfa1e2bd821a317e7d006517dcf2f3fac68d # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051337-dislocate-sizably-eb10@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: 2e4edfa1e2bd ("Bluetooth: qca: add missing firmware sanity checks") ecf6b2d95666 ("Bluetooth: btqca: Add support for firmware image with mbn type for WCN6750") d8f97da1b92d ("Bluetooth: hci_qca: Add support for QTI Bluetooth chip wcn6750") b43ca511178e ("Bluetooth: btqca: Don't modify firmware contents in-place") c1a74160eaf1 ("Bluetooth: hci_qca: Add device_may_wakeup support") eaf19b0c47d1 ("Bluetooth: btqca: Enable MSFT extension for Qualcomm WCN399x") c0187b0bd3e9 ("Bluetooth: btqca: Add support to read FW build version for WCN3991 BTSoC") 99719449a4a6 ("Bluetooth: hci_qca: resolve various warnings") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 2e4edfa1e2bd821a317e7d006517dcf2f3fac68d Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan+linaro(a)kernel.org> Date: Tue, 30 Apr 2024 19:07:39 +0200 Subject: [PATCH] Bluetooth: qca: add missing firmware sanity checks Add the missing sanity checks when parsing the firmware files before downloading them to avoid accessing and corrupting memory beyond the vmalloced buffer. Fixes: 83e81961ff7e ("Bluetooth: btqca: Introduce generic QCA ROME support") Cc: stable(a)vger.kernel.org # 4.10 Signed-off-by: Johan Hovold <johan+linaro(a)kernel.org> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c index cfa71708397b..6743b0a79d7a 100644 --- a/drivers/bluetooth/btqca.c +++ b/drivers/bluetooth/btqca.c @@ -268,9 +268,10 @@ int qca_send_pre_shutdown_cmd(struct hci_dev *hdev) } EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd); -static void qca_tlv_check_data(struct hci_dev *hdev, +static int qca_tlv_check_data(struct hci_dev *hdev, struct qca_fw_config *config, - u8 *fw_data, enum qca_btsoc_type soc_type) + u8 *fw_data, size_t fw_size, + enum qca_btsoc_type soc_type) { const u8 *data; u32 type_len; @@ -286,6 +287,9 @@ static void qca_tlv_check_data(struct hci_dev *hdev, switch (config->type) { case ELF_TYPE_PATCH: + if (fw_size < 7) + return -EINVAL; + config->dnld_mode = QCA_SKIP_EVT_VSE_CC; config->dnld_type = QCA_SKIP_EVT_VSE_CC; @@ -294,6 +298,9 @@ static void qca_tlv_check_data(struct hci_dev *hdev, bt_dev_dbg(hdev, "File version : 0x%x", fw_data[6]); break; case TLV_TYPE_PATCH: + if (fw_size < sizeof(struct tlv_type_hdr) + sizeof(struct tlv_type_patch)) + return -EINVAL; + tlv = (struct tlv_type_hdr *)fw_data; type_len = le32_to_cpu(tlv->type_len); tlv_patch = (struct tlv_type_patch *)tlv->data; @@ -333,6 +340,9 @@ static void qca_tlv_check_data(struct hci_dev *hdev, break; case TLV_TYPE_NVM: + if (fw_size < sizeof(struct tlv_type_hdr)) + return -EINVAL; + tlv = (struct tlv_type_hdr *)fw_data; type_len = le32_to_cpu(tlv->type_len); @@ -341,17 +351,26 @@ static void qca_tlv_check_data(struct hci_dev *hdev, BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff); BT_DBG("Length\t\t : %d bytes", length); + if (fw_size < length + (tlv->data - fw_data)) + return -EINVAL; + idx = 0; data = tlv->data; - while (idx < length) { + while (idx < length - sizeof(struct tlv_type_nvm)) { tlv_nvm = (struct tlv_type_nvm *)(data + idx); tag_id = le16_to_cpu(tlv_nvm->tag_id); tag_len = le16_to_cpu(tlv_nvm->tag_len); + if (length < idx + sizeof(struct tlv_type_nvm) + tag_len) + return -EINVAL; + /* Update NVM tags as needed */ switch (tag_id) { case EDL_TAG_ID_HCI: + if (tag_len < 3) + return -EINVAL; + /* HCI transport layer parameters * enabling software inband sleep * onto controller side. @@ -367,6 +386,9 @@ static void qca_tlv_check_data(struct hci_dev *hdev, break; case EDL_TAG_ID_DEEP_SLEEP: + if (tag_len < 1) + return -EINVAL; + /* Sleep enable mask * enabling deep sleep feature on controller. */ @@ -375,14 +397,16 @@ static void qca_tlv_check_data(struct hci_dev *hdev, break; } - idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len); + idx += sizeof(struct tlv_type_nvm) + tag_len; } break; default: BT_ERR("Unknown TLV type %d", config->type); - break; + return -EINVAL; } + + return 0; } static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size, @@ -532,7 +556,9 @@ static int qca_download_firmware(struct hci_dev *hdev, memcpy(data, fw->data, size); release_firmware(fw); - qca_tlv_check_data(hdev, config, data, soc_type); + ret = qca_tlv_check_data(hdev, config, data, size, soc_type); + if (ret) + return ret; segment = data; remain = size;

7 months, 3 weeks

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FAILED: patch "[PATCH] mm/userfaultfd: reset ptes when close() for wr-protected ones" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-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 <stable(a)vger.kernel.org>. 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-6.1.y git checkout FETCH_HEAD git cherry-pick -x c88033efe9a391e72ba6b5df4b01d6e628f4e734 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051304-turkey-underfed-40fe@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: c88033efe9a3 ("mm/userfaultfd: reset ptes when close() for wr-protected ones") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c88033efe9a391e72ba6b5df4b01d6e628f4e734 Mon Sep 17 00:00:00 2001 From: Peter Xu <peterx(a)redhat.com> Date: Mon, 22 Apr 2024 09:33:11 -0400 Subject: [PATCH] mm/userfaultfd: reset ptes when close() for wr-protected ones Userfaultfd unregister includes a step to remove wr-protect bits from all the relevant pgtable entries, but that only covered an explicit UFFDIO_UNREGISTER ioctl, not a close() on the userfaultfd itself. Cover that too. This fixes a WARN trace. The only user visible side effect is the user can observe leftover wr-protect bits even if the user close()ed on an userfaultfd when releasing the last reference of it. However hopefully that should be harmless, and nothing bad should happen even if so. This change is now more important after the recent page-table-check patch we merged in mm-unstable (446dd9ad37d0 ("mm/page_table_check: support userfault wr-protect entries")), as we'll do sanity check on uffd-wp bits without vma context. So it's better if we can 100% guarantee no uffd-wp bit leftovers, to make sure each report will be valid. Link: https://lore.kernel.org/all/000000000000ca4df20616a0fe16@google.com/ Fixes: f369b07c8614 ("mm/uffd: reset write protection when unregister with wp-mode") Analyzed-by: David Hildenbrand <david(a)redhat.com> Link: https://lkml.kernel.org/r/20240422133311.2987675-1-peterx@redhat.com Reported-by: syzbot+d8426b591c36b21c750e(a)syzkaller.appspotmail.com Signed-off-by: Peter Xu <peterx(a)redhat.com> Reviewed-by: David Hildenbrand <david(a)redhat.com> Cc: Nadav Amit <nadav.amit(a)gmail.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index 60dcfafdc11a..292f5fd50104 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -895,6 +895,10 @@ static int userfaultfd_release(struct inode *inode, struct file *file) prev = vma; continue; } + /* Reset ptes for the whole vma range if wr-protected */ + if (userfaultfd_wp(vma)) + uffd_wp_range(vma, vma->vm_start, + vma->vm_end - vma->vm_start, false); new_flags = vma->vm_flags & ~__VM_UFFD_FLAGS; vma = vma_modify_flags_uffd(&vmi, prev, vma, vma->vm_start, vma->vm_end, new_flags,

7 months, 3 weeks

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FAILED: patch "[PATCH] eventfs: Have "events" directory get permissions from its" failed to apply to 6.8-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.8-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 <stable(a)vger.kernel.org>. 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-6.8.y git checkout FETCH_HEAD git cherry-pick -x d57cf30c4c07837799edec949102b0adf58bae79 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024051331-sediment-viewable-33bc@gregkh' --subject-prefix 'PATCH 6.8.y' HEAD^.. Possible dependencies: d57cf30c4c07 ("eventfs: Have "events" directory get permissions from its parent") d53891d348ac ("eventfs: Do not differentiate the toplevel events directory") c3137ab6318d ("eventfs: Create eventfs_root_inode to store dentry") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From d57cf30c4c07837799edec949102b0adf58bae79 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Google)" <rostedt(a)goodmis.org> Date: Thu, 2 May 2024 16:08:27 -0400 Subject: [PATCH] eventfs: Have "events" directory get permissions from its parent The events directory gets its permissions from the root inode. But this can cause an inconsistency if the instances directory changes its permissions, as the permissions of the created directories under it should inherit the permissions of the instances directory when directories under it are created. Currently the behavior is: # cd /sys/kernel/tracing # chgrp 1002 instances # mkdir instances/foo # ls -l instances/foo [..] -r--r----- 1 root lkp 0 May 1 18:55 buffer_total_size_kb -rw-r----- 1 root lkp 0 May 1 18:55 current_tracer -rw-r----- 1 root lkp 0 May 1 18:55 error_log drwxr-xr-x 1 root root 0 May 1 18:55 events --w------- 1 root lkp 0 May 1 18:55 free_buffer drwxr-x--- 2 root lkp 0 May 1 18:55 options drwxr-x--- 10 root lkp 0 May 1 18:55 per_cpu -rw-r----- 1 root lkp 0 May 1 18:55 set_event All the files and directories under "foo" has the "lkp" group except the "events" directory. That's because its getting its default value from the mount point instead of its parent. Have the "events" directory make its default value based on its parent's permissions. That now gives: # ls -l instances/foo [..] -rw-r----- 1 root lkp 0 May 1 21:16 buffer_subbuf_size_kb -r--r----- 1 root lkp 0 May 1 21:16 buffer_total_size_kb -rw-r----- 1 root lkp 0 May 1 21:16 current_tracer -rw-r----- 1 root lkp 0 May 1 21:16 error_log drwxr-xr-x 1 root lkp 0 May 1 21:16 events --w------- 1 root lkp 0 May 1 21:16 free_buffer drwxr-x--- 2 root lkp 0 May 1 21:16 options drwxr-x--- 10 root lkp 0 May 1 21:16 per_cpu -rw-r----- 1 root lkp 0 May 1 21:16 set_event Link: https://lore.kernel.org/linux-trace-kernel/20240502200906.161887248@goodmis… Cc: stable(a)vger.kernel.org Cc: Masami Hiramatsu <mhiramat(a)kernel.org> Cc: Mark Rutland <mark.rutland(a)arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Cc: Andrew Morton <akpm(a)linux-foundation.org> Fixes: 8186fff7ab649 ("tracefs/eventfs: Use root and instance inodes as default ownership") Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> diff --git a/fs/tracefs/event_inode.c b/fs/tracefs/event_inode.c index 6e08405892ae..a878cea70f4c 100644 --- a/fs/tracefs/event_inode.c +++ b/fs/tracefs/event_inode.c @@ -37,6 +37,7 @@ static DEFINE_MUTEX(eventfs_mutex); struct eventfs_root_inode { struct eventfs_inode ei; + struct inode *parent_inode; struct dentry *events_dir; }; @@ -226,12 +227,23 @@ static int eventfs_set_attr(struct mnt_idmap *idmap, struct dentry *dentry, static void update_events_attr(struct eventfs_inode *ei, struct super_block *sb) { - struct inode *root; + struct eventfs_root_inode *rei; + struct inode *parent; - /* Get the tracefs root inode. */ - root = d_inode(sb->s_root); - ei->attr.uid = root->i_uid; - ei->attr.gid = root->i_gid; + rei = get_root_inode(ei); + + /* Use the parent inode permissions unless root set its permissions */ + parent = rei->parent_inode; + + if (rei->ei.attr.mode & EVENTFS_SAVE_UID) + ei->attr.uid = rei->ei.attr.uid; + else + ei->attr.uid = parent->i_uid; + + if (rei->ei.attr.mode & EVENTFS_SAVE_GID) + ei->attr.gid = rei->ei.attr.gid; + else + ei->attr.gid = parent->i_gid; } static void set_top_events_ownership(struct inode *inode) @@ -817,6 +829,7 @@ struct eventfs_inode *eventfs_create_events_dir(const char *name, struct dentry // Note: we have a ref to the dentry from tracefs_start_creating() rei = get_root_inode(ei); rei->events_dir = dentry; + rei->parent_inode = d_inode(dentry->d_sb->s_root); ei->entries = entries; ei->nr_entries = size; @@ -826,10 +839,15 @@ struct eventfs_inode *eventfs_create_events_dir(const char *name, struct dentry uid = d_inode(dentry->d_parent)->i_uid; gid = d_inode(dentry->d_parent)->i_gid; - /* This is used as the default ownership of the files and directories */ ei->attr.uid = uid; ei->attr.gid = gid; + /* + * When the "events" directory is created, it takes on the + * permissions of its parent. But can be reset on remount. + */ + ei->attr.mode |= EVENTFS_SAVE_UID | EVENTFS_SAVE_GID; + INIT_LIST_HEAD(&ei->children); INIT_LIST_HEAD(&ei->list);

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