- Linux-stable-mirror - lists.linaro.org

[PATCH 1/1] iommu/vt-d: Assign owner to the static identity domain

by Lu Baolu

The idxd driver attaches the default domain to a PASID of the device to perform kernel DMA using that PASID. The domain is attached to the device's PASID through iommu_attach_device_pasid(), which checks if the domain->owner matches the iommu_ops retrieved from the device. If they do not match, it returns a failure. if (ops != domain->owner || pasid == IOMMU_NO_PASID) return -EINVAL; The static identity domain implemented by the intel iommu driver doesn't specify the domain owner. Therefore, kernel DMA with PASID doesn't work for the idxd driver if the device translation mode is set to passthrough. Fix this by specifying the domain owner for the static identity domain. Fixes: 2031c469f816 ("iommu/vt-d: Add support for static identity domain") Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220031 Cc: stable(a)vger.kernel.org Signed-off-by: Lu Baolu <baolu.lu(a)linux.intel.com> --- drivers/iommu/intel/iommu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index cb0b993bebb4..63c9c97ccf69 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4385,6 +4385,7 @@ static struct iommu_domain identity_domain = { .attach_dev = identity_domain_attach_dev, .set_dev_pasid = identity_domain_set_dev_pasid, }, + .owner = &intel_iommu_ops, }; const struct iommu_ops intel_iommu_ops = { -- 2.43.0

2 months, 1 week

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+ v2-ocfs2-fix-panic-in-failed-foilio-allocation.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: ocfs2: fix panic in failed foilio allocation has been added to the -mm mm-hotfixes-unstable branch. Its filename is v2-ocfs2-fix-panic-in-failed-foilio-allocation.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Mark Tinguely <mark.tinguely(a)oracle.com> Subject: ocfs2: fix panic in failed foilio allocation Date: Fri, 11 Apr 2025 11:31:24 -0500 commit 7e119cff9d0a ("ocfs2: convert w_pages to w_folios") and commit 9a5e08652dc4b ("ocfs2: use an array of folios instead of an array of pages") save -ENOMEM in the folio array upon allocation failure and call the folio array free code. The folio array free code expects either valid folio pointers or NULL. Finding the -ENOMEM will result in a panic. Fix by NULLing the error folio entry. Link: https://lkml.kernel.org/r/c879a52b-835c-4fa0-902b-8b2e9196dcbd@oracle.com Fixes: 7e119cff9d0a ("ocfs2: convert w_pages to w_folios") Fixes: 9a5e08652dc4b ("ocfs2: use an array of folios instead of an array of pages") Signed-off-by: Mark Tinguely <mark.tinguely(a)oracle.com> Reviewed-by: Matthew Wilcox (Oracle) <willy(a)infradead.org> Cc: Changwei Ge <gechangwei(a)live.cn> Cc: Joel Becker <jlbec(a)evilplan.org> Cc: Junxiao Bi <junxiao.bi(a)oracle.com> Cc: Mark Fasheh <mark(a)fasheh.com> Cc: Nathan Chancellor <nathan(a)kernel.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- fs/ocfs2/alloc.c | 1 + 1 file changed, 1 insertion(+) --- a/fs/ocfs2/alloc.c~v2-ocfs2-fix-panic-in-failed-foilio-allocation +++ a/fs/ocfs2/alloc.c @@ -6918,6 +6918,7 @@ static int ocfs2_grab_folios(struct inod if (IS_ERR(folios[numfolios])) { ret = PTR_ERR(folios[numfolios]); mlog_errno(ret); + folios[numfolios] = NULL; goto out; } _ Patches currently in -mm which might be from mark.tinguely(a)oracle.com are v2-ocfs2-fix-panic-in-failed-foilio-allocation.patch

2 months, 1 week

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[obsolete] ocfs2-fix-panic-in-failed-foilio-allocation.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: ocfs2: fix panic in failed foilio allocation has been removed from the -mm tree. Its filename was ocfs2-fix-panic-in-failed-foilio-allocation.patch This patch was dropped because it is obsolete ------------------------------------------------------ From: Mark Tinguely <mark.tinguely(a)oracle.com> Subject: ocfs2: fix panic in failed foilio allocation Date: Thu, 10 Apr 2025 14:56:11 -0500 In commit 7e119cff9d0a ("ocfs2: convert w_pages to w_folios") the chunk page allocations became order 0 folio allocations. If an allocation failed, the folio array entry should be NULL so the error path can skip the entry. In the port it is -ENOMEM and the error path panics trying to free this bad value. Link: https://lkml.kernel.org/r/150746ad-32ae-415e-bf1d-6dfd195fbb65@oracle.com Fixes: 7e119cff9d0a ("ocfs2: convert w_pages to w_folios") Signed-off-by: Mark Tinguely <mark.tinguely(a)oracle.com> Cc: Changwei Ge <gechangwei(a)live.cn> Cc: Joel Becker <jlbec(a)evilplan.org> Cc: Jun Piao <piaojun(a)huawei.com> Cc: Junxiao Bi <junxiao.bi(a)oracle.com> Cc: Mark Fasheh <mark(a)fasheh.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- fs/ocfs2/aops.c | 1 + 1 file changed, 1 insertion(+) --- a/fs/ocfs2/aops.c~ocfs2-fix-panic-in-failed-foilio-allocation +++ a/fs/ocfs2/aops.c @@ -1071,6 +1071,7 @@ static int ocfs2_grab_folios_for_write(s if (IS_ERR(wc->w_folios[i])) { ret = PTR_ERR(wc->w_folios[i]); mlog_errno(ret); + wc->w_folios[i] = NULL; goto out; } } _ Patches currently in -mm which might be from mark.tinguely(a)oracle.com are

2 months, 1 week

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[obsolete] v2-ocfs2-fix-panic-in-failed-foilio-allocation.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: ocfs2: fix panic in failed foilio allocation has been removed from the -mm tree. Its filename was v2-ocfs2-fix-panic-in-failed-foilio-allocation.patch This patch was dropped because it is obsolete ------------------------------------------------------ From: Mark Tinguely <mark.tinguely(a)oracle.com> Subject: ocfs2: fix panic in failed foilio allocation Date: Fri, 11 Apr 2025 11:31:24 -0500 In the page to order 0 folio conversion series, commits 7e119cff9d0a ("ocfs2: convert w_pages to w_folios") and 9a5e08652dc4 ("ocfs2: use an array of folios instead of an array of pages") save -ENOMEM in the folio array upon allocation failure and call the folio array free code. The folio array free code expects either valid folio pointers or NULL. Finding the -ENOMEM will result in a panic. Fix by NULLing the error folio entry. Link: https://lkml.kernel.org/r/c879a52b-835c-4fa0-902b-8b2e9196dcbd@oracle.com Fixes: 7e119cff9d0a ("ocfs2: convert w_pages to w_folios") FIxes: 9a5e08652dc4 ("ocfs2: use an array of folios instead of an array of pages") Signed-off-by: Mark Tinguely <mark.tinguely(a)oracle.com> Reviewed-by: Matthew Wilcox (Oracle) <willy(a)infradead.org> Reviewed-by: Joseph Qi <joseph.qi(a)linux.alibaba.com> Cc: Changwei Ge <gechangwei(a)live.cn> Cc: Joel Becker <jlbec(a)evilplan.org> Cc: Junxiao Bi <junxiao.bi(a)oracle.com> Cc: Mark Fasheh <mark(a)fasheh.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- fs/ocfs2/alloc.c | 1 + fs/ocfs2/aops.c | 1 + 2 files changed, 2 insertions(+) --- a/fs/ocfs2/alloc.c~v2-ocfs2-fix-panic-in-failed-foilio-allocation +++ a/fs/ocfs2/alloc.c @@ -6918,6 +6918,7 @@ static int ocfs2_grab_folios(struct inod if (IS_ERR(folios[numfolios])) { ret = PTR_ERR(folios[numfolios]); mlog_errno(ret); + folios[numfolios] = NULL; goto out; } --- a/fs/ocfs2/aops.c~v2-ocfs2-fix-panic-in-failed-foilio-allocation +++ a/fs/ocfs2/aops.c @@ -1130,6 +1130,7 @@ static int ocfs2_write_cluster(struct ad (unsigned long long)OCFS2_I(inode)->ip_blkno); if (ret < 0) { mlog_errno(ret); + wc->w_folios[i] = NULL; goto out; } } else if (clear_unwritten) { _ Patches currently in -mm which might be from mark.tinguely(a)oracle.com are ocfs2-fix-panic-in-failed-foilio-allocation.patch

2 months, 1 week

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[PATCH RESEND] drm/amdgpu: Remove redundant return value checks for amdgpu_ras_error_data_init

by Wentao Liang

The function amdgpu_ras_error_data_init() always returns 0, making its return value checks redundant. This patch changes its return type to void and removes all unnecessary checks in the callers. This simplifies the code and avoids confusion about the function's behavior. Additionally, this change keeps the usage consistent with amdgpu_ras_do_page_retirement(), which also does not check the return value. Fixes: 5b1270beb380 ("drm/amdgpu: add ras_err_info to identify RAS error source") Cc: stable(a)vger.kernel.org # 6.7+ Signed-off-by: Wentao Liang <vulab(a)iscas.ac.cn> --- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 19 +++++-------------- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c | 8 ++------ drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 3 +-- drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c | 3 +-- 5 files changed, 10 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c index 4c9fa24dd972..aef1b2b713a2 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c @@ -182,9 +182,7 @@ static int amdgpu_reserve_page_direct(struct amdgpu_device *adev, uint64_t addre return 0; } - ret = amdgpu_ras_error_data_init(&err_data); - if (ret) - return ret; + amdgpu_ras_error_data_init(&err_data); memset(&err_rec, 0x0, sizeof(struct eeprom_table_record)); err_data.err_addr = &err_rec; @@ -687,8 +685,7 @@ static struct ras_manager *amdgpu_ras_create_obj(struct amdgpu_device *adev, if (alive_obj(obj)) return NULL; - if (amdgpu_ras_error_data_init(&obj->err_data)) - return NULL; + amdgpu_ras_error_data_init(&obj->err_data) obj->head = *head; obj->adev = adev; @@ -1428,9 +1425,7 @@ static int amdgpu_ras_query_error_status_with_event(struct amdgpu_device *adev, if (!obj) return -EINVAL; - ret = amdgpu_ras_error_data_init(&err_data); - if (ret) - return ret; + amdgpu_ras_error_data_init(&err_data); if (!amdgpu_ras_get_error_query_mode(adev, &error_query_mode)) return -EINVAL; @@ -2255,9 +2250,7 @@ static void amdgpu_ras_interrupt_umc_handler(struct ras_manager *obj, if (!data->cb) return; - ret = amdgpu_ras_error_data_init(&err_data); - if (ret) - return; + amdgpu_ras_error_data_init(&err_data); /* Let IP handle its data, maybe we need get the output * from the callback to update the error type/count, etc @@ -4623,13 +4616,11 @@ void amdgpu_ras_inst_reset_ras_error_count(struct amdgpu_device *adev, } } -int amdgpu_ras_error_data_init(struct ras_err_data *err_data) +void amdgpu_ras_error_data_init(struct ras_err_data *err_data) { memset(err_data, 0, sizeof(*err_data)); INIT_LIST_HEAD(&err_data->err_node_list); - - return 0; } static void amdgpu_ras_error_node_release(struct ras_err_node *err_node) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h index 6db772ecfee4..5f88e70fbf5c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h @@ -931,7 +931,7 @@ void amdgpu_ras_inst_reset_ras_error_count(struct amdgpu_device *adev, uint32_t reg_list_size, uint32_t instance); -int amdgpu_ras_error_data_init(struct ras_err_data *err_data); +void amdgpu_ras_error_data_init(struct ras_err_data *err_data); void amdgpu_ras_error_data_fini(struct ras_err_data *err_data); int amdgpu_ras_error_statistic_ce_count(struct ras_err_data *err_data, struct amdgpu_smuio_mcm_config_info *mcm_info, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c index 896f3609b0ee..5de6e332c2cd 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c @@ -52,9 +52,7 @@ int amdgpu_umc_page_retirement_mca(struct amdgpu_device *adev, struct ras_err_data err_data; int ret; - ret = amdgpu_ras_error_data_init(&err_data); - if (ret) - return ret; + amdgpu_ras_error_data_init(&err_data); err_data.err_addr = kcalloc(adev->umc.max_ras_err_cnt_per_query, @@ -230,9 +228,7 @@ int amdgpu_umc_pasid_poison_handler(struct amdgpu_device *adev, }; struct ras_manager *obj = amdgpu_ras_find_obj(adev, &head); - ret = amdgpu_ras_error_data_init(&err_data); - if (ret) - return ret; + amdgpu_ras_error_data_init(&err_data); ret = amdgpu_umc_do_page_retirement(adev, &err_data, NULL, reset); diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c index a26a9be58eac..d4bdfe280c88 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c @@ -364,8 +364,7 @@ static void nbio_v7_4_handle_ras_controller_intr_no_bifring(struct amdgpu_device struct ras_err_data err_data; struct amdgpu_ras *ras = amdgpu_ras_get_context(adev); - if (amdgpu_ras_error_data_init(&err_data)) - return; + amdgpu_ras_error_data_init(&err_data); if (adev->asic_type == CHIP_ALDEBARAN) bif_doorbell_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL_ALDE); diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c index 8a0a63ac88d2..c79ed1adf681 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c @@ -537,8 +537,7 @@ static void nbio_v7_9_handle_ras_controller_intr_no_bifring(struct amdgpu_device struct ras_err_data err_data; struct amdgpu_ras *ras = amdgpu_ras_get_context(adev); - if (amdgpu_ras_error_data_init(&err_data)) - return; + amdgpu_ras_error_data_init(&err_data); bif_doorbell_intr_cntl = RREG32_SOC15(NBIO, 0, regBIF_BX0_BIF_DOORBELL_INT_CNTL); -- 2.42.0.windows.2

2 months, 1 week

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[PATCH net v1 1/1] net: selftests: initialize TCP header and skb payload with zero

by Oleksij Rempel

Zero-initialize TCP header via memset() to avoid garbage values that may affect checksum or behavior during test transmission. Also zero-fill allocated payload and padding regions using memset() after skb_put(), ensuring deterministic content for all outgoing test packets. Fixes: 3e1e58d64c3d ("net: add generic selftest support") Signed-off-by: Oleksij Rempel <o.rempel(a)pengutronix.de> Cc: stable(a)vger.kernel.org --- net/core/selftests.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/net/core/selftests.c b/net/core/selftests.c index e99ae983fca9..35f807ea9952 100644 --- a/net/core/selftests.c +++ b/net/core/selftests.c @@ -100,10 +100,10 @@ static struct sk_buff *net_test_get_skb(struct net_device *ndev, ehdr->h_proto = htons(ETH_P_IP); if (attr->tcp) { + memset(thdr, 0, sizeof(*thdr)); thdr->source = htons(attr->sport); thdr->dest = htons(attr->dport); thdr->doff = sizeof(struct tcphdr) / 4; - thdr->check = 0; } else { uhdr->source = htons(attr->sport); uhdr->dest = htons(attr->dport); @@ -144,10 +144,18 @@ static struct sk_buff *net_test_get_skb(struct net_device *ndev, attr->id = net_test_next_id; shdr->id = net_test_next_id++; - if (attr->size) - skb_put(skb, attr->size); - if (attr->max_size && attr->max_size > skb->len) - skb_put(skb, attr->max_size - skb->len); + if (attr->size) { + void *payload = skb_put(skb, attr->size); + + memset(payload, 0, attr->size); + } + + if (attr->max_size && attr->max_size > skb->len) { + size_t pad_len = attr->max_size - skb->len; + void *pad = skb_put(skb, pad_len); + + memset(pad, 0, pad_len); + } skb->csum = 0; skb->ip_summed = CHECKSUM_PARTIAL; -- 2.39.5

2 months, 1 week

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FAILED: patch "[PATCH] platform/x86: msi-wmi-platform: Workaround a ACPI firmware" failed to apply to 6.12-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.12-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-6.12.y git checkout FETCH_HEAD git cherry-pick -x baf2f2c2b4c8e1d398173acd4d2fa9131a86b84e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025042139-decimeter-dislike-3ca4@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From baf2f2c2b4c8e1d398173acd4d2fa9131a86b84e Mon Sep 17 00:00:00 2001 From: Armin Wolf <W_Armin(a)gmx.de> Date: Mon, 14 Apr 2025 16:04:53 +0200 Subject: [PATCH] platform/x86: msi-wmi-platform: Workaround a ACPI firmware bug MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The ACPI byte code inside the ACPI control method responsible for handling the WMI method calls uses a global buffer for constructing the return value, yet the ACPI control method itself is not marked as "Serialized". This means that calling WMI methods on this WMI device is not thread-safe, as concurrent WMI method calls will corrupt the global buffer. Fix this by serializing the WMI method calls using a mutex. Cc: stable(a)vger.kernel.org # 6.x.x: 912d614ac99e: platform/x86: msi-wmi-platform: Rename "data" variable Fixes: 9c0beb6b29e7 ("platform/x86: wmi: Add MSI WMI Platform driver") Tested-by: Antheas Kapenekakis <lkml(a)antheas.dev> Signed-off-by: Armin Wolf <W_Armin(a)gmx.de> Link: https://lore.kernel.org/r/20250414140453.7691-2-W_Armin@gmx.de Reviewed-by: Ilpo Järvinen <ilpo.jarvinen(a)linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen(a)linux.intel.com> diff --git a/Documentation/wmi/devices/msi-wmi-platform.rst b/Documentation/wmi/devices/msi-wmi-platform.rst index 31a136942892..73197b31926a 100644 --- a/Documentation/wmi/devices/msi-wmi-platform.rst +++ b/Documentation/wmi/devices/msi-wmi-platform.rst @@ -138,6 +138,10 @@ input data, the meaning of which depends on the subfeature being accessed. The output buffer contains a single byte which signals success or failure (``0x00`` on failure) and 31 bytes of output data, the meaning if which depends on the subfeature being accessed. +.. note:: + The ACPI control method responsible for handling the WMI method calls is not thread-safe. + This is a firmware bug that needs to be handled inside the driver itself. + WMI method Get_EC() ------------------- diff --git a/drivers/platform/x86/msi-wmi-platform.c b/drivers/platform/x86/msi-wmi-platform.c index e15681dfca8d..dc5e9878cb68 100644 --- a/drivers/platform/x86/msi-wmi-platform.c +++ b/drivers/platform/x86/msi-wmi-platform.c @@ -10,6 +10,7 @@ #include <linux/acpi.h> #include <linux/bits.h> #include <linux/bitfield.h> +#include <linux/cleanup.h> #include <linux/debugfs.h> #include <linux/device.h> #include <linux/device/driver.h> @@ -17,6 +18,7 @@ #include <linux/hwmon.h> #include <linux/kernel.h> #include <linux/module.h> +#include <linux/mutex.h> #include <linux/printk.h> #include <linux/rwsem.h> #include <linux/types.h> @@ -76,8 +78,13 @@ enum msi_wmi_platform_method { MSI_PLATFORM_GET_WMI = 0x1d, }; -struct msi_wmi_platform_debugfs_data { +struct msi_wmi_platform_data { struct wmi_device *wdev; + struct mutex wmi_lock; /* Necessary when calling WMI methods */ +}; + +struct msi_wmi_platform_debugfs_data { + struct msi_wmi_platform_data *data; enum msi_wmi_platform_method method; struct rw_semaphore buffer_lock; /* Protects debugfs buffer */ size_t length; @@ -132,8 +139,9 @@ static int msi_wmi_platform_parse_buffer(union acpi_object *obj, u8 *output, siz return 0; } -static int msi_wmi_platform_query(struct wmi_device *wdev, enum msi_wmi_platform_method method, - u8 *input, size_t input_length, u8 *output, size_t output_length) +static int msi_wmi_platform_query(struct msi_wmi_platform_data *data, + enum msi_wmi_platform_method method, u8 *input, + size_t input_length, u8 *output, size_t output_length) { struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; struct acpi_buffer in = { @@ -147,9 +155,15 @@ static int msi_wmi_platform_query(struct wmi_device *wdev, enum msi_wmi_platform if (!input_length || !output_length) return -EINVAL; - status = wmidev_evaluate_method(wdev, 0x0, method, &in, &out); - if (ACPI_FAILURE(status)) - return -EIO; + /* + * The ACPI control method responsible for handling the WMI method calls + * is not thread-safe. Because of this we have to do the locking ourself. + */ + scoped_guard(mutex, &data->wmi_lock) { + status = wmidev_evaluate_method(data->wdev, 0x0, method, &in, &out); + if (ACPI_FAILURE(status)) + return -EIO; + } obj = out.pointer; if (!obj) @@ -170,13 +184,13 @@ static umode_t msi_wmi_platform_is_visible(const void *drvdata, enum hwmon_senso static int msi_wmi_platform_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { - struct wmi_device *wdev = dev_get_drvdata(dev); + struct msi_wmi_platform_data *data = dev_get_drvdata(dev); u8 input[32] = { 0 }; u8 output[32]; u16 value; int ret; - ret = msi_wmi_platform_query(wdev, MSI_PLATFORM_GET_FAN, input, sizeof(input), output, + ret = msi_wmi_platform_query(data, MSI_PLATFORM_GET_FAN, input, sizeof(input), output, sizeof(output)); if (ret < 0) return ret; @@ -231,7 +245,7 @@ static ssize_t msi_wmi_platform_write(struct file *fp, const char __user *input, return ret; down_write(&data->buffer_lock); - ret = msi_wmi_platform_query(data->wdev, data->method, payload, data->length, data->buffer, + ret = msi_wmi_platform_query(data->data, data->method, payload, data->length, data->buffer, data->length); up_write(&data->buffer_lock); @@ -277,17 +291,17 @@ static void msi_wmi_platform_debugfs_remove(void *data) debugfs_remove_recursive(dir); } -static void msi_wmi_platform_debugfs_add(struct wmi_device *wdev, struct dentry *dir, +static void msi_wmi_platform_debugfs_add(struct msi_wmi_platform_data *drvdata, struct dentry *dir, const char *name, enum msi_wmi_platform_method method) { struct msi_wmi_platform_debugfs_data *data; struct dentry *entry; - data = devm_kzalloc(&wdev->dev, sizeof(*data), GFP_KERNEL); + data = devm_kzalloc(&drvdata->wdev->dev, sizeof(*data), GFP_KERNEL); if (!data) return; - data->wdev = wdev; + data->data = drvdata; data->method = method; init_rwsem(&data->buffer_lock); @@ -298,82 +312,82 @@ static void msi_wmi_platform_debugfs_add(struct wmi_device *wdev, struct dentry entry = debugfs_create_file(name, 0600, dir, data, &msi_wmi_platform_debugfs_fops); if (IS_ERR(entry)) - devm_kfree(&wdev->dev, data); + devm_kfree(&drvdata->wdev->dev, data); } -static void msi_wmi_platform_debugfs_init(struct wmi_device *wdev) +static void msi_wmi_platform_debugfs_init(struct msi_wmi_platform_data *data) { struct dentry *dir; char dir_name[64]; int ret, method; - scnprintf(dir_name, ARRAY_SIZE(dir_name), "%s-%s", DRIVER_NAME, dev_name(&wdev->dev)); + scnprintf(dir_name, ARRAY_SIZE(dir_name), "%s-%s", DRIVER_NAME, dev_name(&data->wdev->dev)); dir = debugfs_create_dir(dir_name, NULL); if (IS_ERR(dir)) return; - ret = devm_add_action_or_reset(&wdev->dev, msi_wmi_platform_debugfs_remove, dir); + ret = devm_add_action_or_reset(&data->wdev->dev, msi_wmi_platform_debugfs_remove, dir); if (ret < 0) return; for (method = MSI_PLATFORM_GET_PACKAGE; method <= MSI_PLATFORM_GET_WMI; method++) - msi_wmi_platform_debugfs_add(wdev, dir, msi_wmi_platform_debugfs_names[method - 1], + msi_wmi_platform_debugfs_add(data, dir, msi_wmi_platform_debugfs_names[method - 1], method); } -static int msi_wmi_platform_hwmon_init(struct wmi_device *wdev) +static int msi_wmi_platform_hwmon_init(struct msi_wmi_platform_data *data) { struct device *hdev; - hdev = devm_hwmon_device_register_with_info(&wdev->dev, "msi_wmi_platform", wdev, + hdev = devm_hwmon_device_register_with_info(&data->wdev->dev, "msi_wmi_platform", data, &msi_wmi_platform_chip_info, NULL); return PTR_ERR_OR_ZERO(hdev); } -static int msi_wmi_platform_ec_init(struct wmi_device *wdev) +static int msi_wmi_platform_ec_init(struct msi_wmi_platform_data *data) { u8 input[32] = { 0 }; u8 output[32]; u8 flags; int ret; - ret = msi_wmi_platform_query(wdev, MSI_PLATFORM_GET_EC, input, sizeof(input), output, + ret = msi_wmi_platform_query(data, MSI_PLATFORM_GET_EC, input, sizeof(input), output, sizeof(output)); if (ret < 0) return ret; flags = output[MSI_PLATFORM_EC_FLAGS_OFFSET]; - dev_dbg(&wdev->dev, "EC RAM version %lu.%lu\n", + dev_dbg(&data->wdev->dev, "EC RAM version %lu.%lu\n", FIELD_GET(MSI_PLATFORM_EC_MAJOR_MASK, flags), FIELD_GET(MSI_PLATFORM_EC_MINOR_MASK, flags)); - dev_dbg(&wdev->dev, "EC firmware version %.28s\n", + dev_dbg(&data->wdev->dev, "EC firmware version %.28s\n", &output[MSI_PLATFORM_EC_VERSION_OFFSET]); if (!(flags & MSI_PLATFORM_EC_IS_TIGERLAKE)) { if (!force) return -ENODEV; - dev_warn(&wdev->dev, "Loading on a non-Tigerlake platform\n"); + dev_warn(&data->wdev->dev, "Loading on a non-Tigerlake platform\n"); } return 0; } -static int msi_wmi_platform_init(struct wmi_device *wdev) +static int msi_wmi_platform_init(struct msi_wmi_platform_data *data) { u8 input[32] = { 0 }; u8 output[32]; int ret; - ret = msi_wmi_platform_query(wdev, MSI_PLATFORM_GET_WMI, input, sizeof(input), output, + ret = msi_wmi_platform_query(data, MSI_PLATFORM_GET_WMI, input, sizeof(input), output, sizeof(output)); if (ret < 0) return ret; - dev_dbg(&wdev->dev, "WMI interface version %u.%u\n", + dev_dbg(&data->wdev->dev, "WMI interface version %u.%u\n", output[MSI_PLATFORM_WMI_MAJOR_OFFSET], output[MSI_PLATFORM_WMI_MINOR_OFFSET]); @@ -381,7 +395,8 @@ static int msi_wmi_platform_init(struct wmi_device *wdev) if (!force) return -ENODEV; - dev_warn(&wdev->dev, "Loading despite unsupported WMI interface version (%u.%u)\n", + dev_warn(&data->wdev->dev, + "Loading despite unsupported WMI interface version (%u.%u)\n", output[MSI_PLATFORM_WMI_MAJOR_OFFSET], output[MSI_PLATFORM_WMI_MINOR_OFFSET]); } @@ -391,19 +406,31 @@ static int msi_wmi_platform_init(struct wmi_device *wdev) static int msi_wmi_platform_probe(struct wmi_device *wdev, const void *context) { + struct msi_wmi_platform_data *data; int ret; - ret = msi_wmi_platform_init(wdev); + data = devm_kzalloc(&wdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->wdev = wdev; + dev_set_drvdata(&wdev->dev, data); + + ret = devm_mutex_init(&wdev->dev, &data->wmi_lock); if (ret < 0) return ret; - ret = msi_wmi_platform_ec_init(wdev); + ret = msi_wmi_platform_init(data); if (ret < 0) return ret; - msi_wmi_platform_debugfs_init(wdev); + ret = msi_wmi_platform_ec_init(data); + if (ret < 0) + return ret; - return msi_wmi_platform_hwmon_init(wdev); + msi_wmi_platform_debugfs_init(data); + + return msi_wmi_platform_hwmon_init(data); } static const struct wmi_device_id msi_wmi_platform_id_table[] = {

2 months, 1 week

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[PATCH] video: screen_info: Update framebuffers behind PCI bridges

by Thomas Zimmermann

Apply bridge window offsets to screen_info framebuffers during relocation. Fixes invalid access to I/O memory. Resources behind a PCI bridge can be located at a certain offset in the kernel's I/O range. The framebuffer memory range stored in screen_info refers to the offset as seen during boot (essentialy 0). During boot up, the kernel may assign a different memory offset to the bridge device and thereby relocating the framebuffer address of the PCI graphics device as seen by the kernel. The information in screen_info must be updated as well. The helper pcibios_bus_to_resource() performs the relocation of the screen_info resource. The result now matches the I/O-memory resource of the PCI graphics device. As before, we store away the information necessary to update the information in screen_info. Commit 78aa89d1dfba ("firmware/sysfb: Update screen_info for relocated EFI framebuffers") added the code for updating screen_info. It is based on similar functionality that pre-existed in efifb. But efifb did not handle bridges correctly, so the problem presumably exists only on newer systems. Signed-off-by: Thomas Zimmermann <tzimmermann(a)suse.de> Reported-by: Tested-by: "Ivan T. Ivanov" <iivanov(a)suse.de> Closes: https://bugzilla.suse.com/show_bug.cgi?id=1240696 Tested-by: Tested-by: "Ivan T. Ivanov" <iivanov(a)suse.de> Fixes: 78aa89d1dfba ("firmware/sysfb: Update screen_info for relocated EFI framebuffers") Cc: dri-devel(a)lists.freedesktop.org Cc: <stable(a)vger.kernel.org> # v6.9+ --- drivers/video/screen_info_pci.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/video/screen_info_pci.c b/drivers/video/screen_info_pci.c index 6c5833517141..c46c75dc3fae 100644 --- a/drivers/video/screen_info_pci.c +++ b/drivers/video/screen_info_pci.c @@ -8,7 +8,7 @@ static struct pci_dev *screen_info_lfb_pdev; static size_t screen_info_lfb_bar; static resource_size_t screen_info_lfb_offset; -static struct resource screen_info_lfb_res = DEFINE_RES_MEM(0, 0); +static struct pci_bus_region screen_info_lfb_region; static bool __screen_info_relocation_is_valid(const struct screen_info *si, struct resource *pr) { @@ -31,7 +31,7 @@ void screen_info_apply_fixups(void) if (screen_info_lfb_pdev) { struct resource *pr = &screen_info_lfb_pdev->resource[screen_info_lfb_bar]; - if (pr->start != screen_info_lfb_res.start) { + if (pr->start != screen_info_lfb_region.start) { if (__screen_info_relocation_is_valid(si, pr)) { /* * Only update base if we have an actual @@ -69,10 +69,21 @@ static void screen_info_fixup_lfb(struct pci_dev *pdev) for (i = 0; i < numres; ++i) { struct resource *r = &res[i]; + struct pci_bus_region bus_region = { + .start = r->start, + .end = r->end, + }; const struct resource *pr; if (!(r->flags & IORESOURCE_MEM)) continue; + + /* + * Translate the address to resource if the framebuffer + * is behind a PCI bridge. + */ + pcibios_bus_to_resource(pdev->bus, r, &bus_region); + pr = pci_find_resource(pdev, r); if (!pr) continue; @@ -85,7 +96,7 @@ static void screen_info_fixup_lfb(struct pci_dev *pdev) screen_info_lfb_pdev = pdev; screen_info_lfb_bar = pr - pdev->resource; screen_info_lfb_offset = r->start - pr->start; - memcpy(&screen_info_lfb_res, r, sizeof(screen_info_lfb_res)); + memcpy(&screen_info_lfb_region, &bus_region, sizeof(screen_info_lfb_region)); } } DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY, 16, -- 2.49.0

2 months, 1 week

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[PATCH] media: imagination: fix a potential memory leak in e5010_probe()

by Haoxiang Li

Add video_device_release() to release the memory allocated by video_device_alloc() if something goes wrong. Fixes: a1e294045885 ("media: imagination: Add E5010 JPEG Encoder driver") Cc: stable(a)vger.kernel.org Signed-off-by: Haoxiang Li <haoxiang_li2024(a)163.com> --- drivers/media/platform/imagination/e5010-jpeg-enc.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/imagination/e5010-jpeg-enc.c b/drivers/media/platform/imagination/e5010-jpeg-enc.c index c194f830577f..53e501b5ac0a 100644 --- a/drivers/media/platform/imagination/e5010-jpeg-enc.c +++ b/drivers/media/platform/imagination/e5010-jpeg-enc.c @@ -1057,8 +1057,11 @@ static int e5010_probe(struct platform_device *pdev) e5010->vdev->lock = &e5010->mutex; ret = v4l2_device_register(dev, &e5010->v4l2_dev); - if (ret) - return dev_err_probe(dev, ret, "failed to register v4l2 device\n"); + if (ret) { + dev_err_probe(dev, ret, "failed to register v4l2 device\n"); + goto fail_after_video_device_alloc; + } + e5010->m2m_dev = v4l2_m2m_init(&e5010_m2m_ops); if (IS_ERR(e5010->m2m_dev)) { @@ -1118,6 +1121,8 @@ static int e5010_probe(struct platform_device *pdev) v4l2_m2m_release(e5010->m2m_dev); fail_after_v4l2_register: v4l2_device_unregister(&e5010->v4l2_dev); +fail_after_video_device_alloc: + video_device_release(e5010->vdev); return ret; } -- 2.25.1

2 months, 1 week

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FAILED: patch "[PATCH] ASoC: qcom: Fix sc7280 lpass potential buffer overflow" 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 a31a4934b31faea76e735bab17e63d02fcd8e029 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025042138-spherical-reabsorb-d6da@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a31a4934b31faea76e735bab17e63d02fcd8e029 Mon Sep 17 00:00:00 2001 From: Evgeny Pimenov <pimenoveu12(a)gmail.com> Date: Tue, 1 Apr 2025 23:40:58 +0300 Subject: [PATCH] ASoC: qcom: Fix sc7280 lpass potential buffer overflow Case values introduced in commit 5f78e1fb7a3e ("ASoC: qcom: Add driver support for audioreach solution") cause out of bounds access in arrays of sc7280 driver data (e.g. in case of RX_CODEC_DMA_RX_0 in sc7280_snd_hw_params()). Redefine LPASS_MAX_PORTS to consider the maximum possible port id for q6dsp as sc7280 driver utilizes some of those values. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 77d0ffef793d ("ASoC: qcom: Add macro for lpass DAI id's max limit") Cc: stable(a)vger.kernel.org # v6.0+ Suggested-by: Mikhail Kobuk <m.kobuk(a)ispras.ru> Suggested-by: Alexey Khoroshilov <khoroshilov(a)ispras.ru> Signed-off-by: Evgeny Pimenov <pimenoveu12(a)gmail.com> Link: https://patch.msgid.link/20250401204058.32261-1-pimenoveu12@gmail.com Signed-off-by: Mark Brown <broonie(a)kernel.org> diff --git a/sound/soc/qcom/lpass.h b/sound/soc/qcom/lpass.h index 27a2bf9a6613..de3ec6f594c1 100644 --- a/sound/soc/qcom/lpass.h +++ b/sound/soc/qcom/lpass.h @@ -13,10 +13,11 @@ #include <linux/platform_device.h> #include <linux/regmap.h> #include <dt-bindings/sound/qcom,lpass.h> +#include <dt-bindings/sound/qcom,q6afe.h> #include "lpass-hdmi.h" #define LPASS_AHBIX_CLOCK_FREQUENCY 131072000 -#define LPASS_MAX_PORTS (LPASS_CDC_DMA_VA_TX8 + 1) +#define LPASS_MAX_PORTS (DISPLAY_PORT_RX_7 + 1) #define LPASS_MAX_MI2S_PORTS (8) #define LPASS_MAX_DMA_CHANNELS (8) #define LPASS_MAX_HDMI_DMA_CHANNELS (4)

2 months, 1 week

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