From 2d0f5001b61c4831d413d12c10caed0e99d73b25 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= Date: Mon, 16 Dec 2024 12:34:50 +0100 Subject: [PATCH 2163/5403] drm/amdgpu: Constify 'struct bin_attribute' MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The sysfs core now allows instances of 'struct bin_attribute' to be moved into read-only memory. Make use of that to protect them against accidental or malicious modifications. Signed-off-by: Thomas Weißschuh Reviewed-by: Alex Deucher Link: https://lore.kernel.org/r/20241216-sysfs-const-bin_attr-drm-v1-4-210f2b36b9bf@weissschuh.net Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 6 +++--- drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 14 +++++++------- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 13 ++++++------- 3 files changed, 16 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index d100bb7a137c..e6fa63f97687 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -225,7 +225,7 @@ static DEVICE_ATTR(pcie_replay_count, 0444, amdgpu_device_get_pcie_replay_count, NULL); static ssize_t amdgpu_sysfs_reg_state_get(struct file *f, struct kobject *kobj, - struct bin_attribute *attr, char *buf, + const struct bin_attribute *attr, char *buf, loff_t ppos, size_t count) { struct device *dev = kobj_to_dev(kobj); @@ -261,8 +261,8 @@ static ssize_t amdgpu_sysfs_reg_state_get(struct file *f, struct kobject *kobj, return bytes_read; } -BIN_ATTR(reg_state, 0444, amdgpu_sysfs_reg_state_get, NULL, - AMDGPU_SYS_REG_STATE_END); +static const BIN_ATTR(reg_state, 0444, amdgpu_sysfs_reg_state_get, NULL, + AMDGPU_SYS_REG_STATE_END); int amdgpu_reg_state_sysfs_init(struct amdgpu_device *adev) { diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c index e5fc80ed06ea..bb02846797eb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c @@ -4000,7 +4000,7 @@ int is_psp_fw_valid(struct psp_bin_desc bin) } static ssize_t amdgpu_psp_vbflash_write(struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, + const struct bin_attribute *bin_attr, char *buffer, loff_t pos, size_t count) { struct device *dev = kobj_to_dev(kobj); @@ -4036,7 +4036,7 @@ static ssize_t amdgpu_psp_vbflash_write(struct file *filp, struct kobject *kobj, } static ssize_t amdgpu_psp_vbflash_read(struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, char *buffer, + const struct bin_attribute *bin_attr, char *buffer, loff_t pos, size_t count) { struct device *dev = kobj_to_dev(kobj); @@ -4088,11 +4088,11 @@ static ssize_t amdgpu_psp_vbflash_read(struct file *filp, struct kobject *kobj, * Writing to this file will stage an IFWI for update. Reading from this file * will trigger the update process. */ -static struct bin_attribute psp_vbflash_bin_attr = { +static const struct bin_attribute psp_vbflash_bin_attr = { .attr = {.name = "psp_vbflash", .mode = 0660}, .size = 0, - .write = amdgpu_psp_vbflash_write, - .read = amdgpu_psp_vbflash_read, + .write_new = amdgpu_psp_vbflash_write, + .read_new = amdgpu_psp_vbflash_read, }; /** @@ -4119,7 +4119,7 @@ static ssize_t amdgpu_psp_vbflash_status(struct device *dev, } static DEVICE_ATTR(psp_vbflash_status, 0440, amdgpu_psp_vbflash_status, NULL); -static struct bin_attribute *bin_flash_attrs[] = { +static const struct bin_attribute *const bin_flash_attrs[] = { &psp_vbflash_bin_attr, NULL }; @@ -4155,7 +4155,7 @@ static umode_t amdgpu_bin_flash_attr_is_visible(struct kobject *kobj, const struct attribute_group amdgpu_flash_attr_group = { .attrs = flash_attrs, - .bin_attrs = bin_flash_attrs, + .bin_attrs_new = bin_flash_attrs, .is_bin_visible = amdgpu_bin_flash_attr_is_visible, .is_visible = amdgpu_flash_attr_is_visible, }; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c index f0924aa3f4e4..83a5f7180cde 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c @@ -1733,7 +1733,7 @@ static char *amdgpu_ras_badpage_flags_str(unsigned int flags) */ static ssize_t amdgpu_ras_sysfs_badpages_read(struct file *f, - struct kobject *kobj, struct bin_attribute *attr, + struct kobject *kobj, const struct bin_attribute *attr, char *buf, loff_t ppos, size_t count) { struct amdgpu_ras *con = @@ -2065,8 +2065,8 @@ void amdgpu_ras_debugfs_create_all(struct amdgpu_device *adev) /* debugfs end */ /* ras fs */ -static BIN_ATTR(gpu_vram_bad_pages, S_IRUGO, - amdgpu_ras_sysfs_badpages_read, NULL, 0); +static const BIN_ATTR(gpu_vram_bad_pages, S_IRUGO, + amdgpu_ras_sysfs_badpages_read, NULL, 0); static DEVICE_ATTR(features, S_IRUGO, amdgpu_ras_sysfs_features_read, NULL); static DEVICE_ATTR(version, 0444, @@ -2088,7 +2088,7 @@ static int amdgpu_ras_fs_init(struct amdgpu_device *adev) &con->event_state_attr.attr, NULL }; - struct bin_attribute *bin_attrs[] = { + const struct bin_attribute *bin_attrs[] = { NULL, NULL, }; @@ -2114,11 +2114,10 @@ static int amdgpu_ras_fs_init(struct amdgpu_device *adev) if (amdgpu_bad_page_threshold != 0) { /* add bad_page_features entry */ - bin_attr_gpu_vram_bad_pages.private = NULL; con->badpages_attr = bin_attr_gpu_vram_bad_pages; + sysfs_bin_attr_init(&con->badpages_attr); bin_attrs[0] = &con->badpages_attr; - group.bin_attrs = bin_attrs; - sysfs_bin_attr_init(bin_attrs[0]); + group.bin_attrs_new = bin_attrs; } r = sysfs_create_group(&adev->dev->kobj, &group); -- 2.54.0