This patch fixes the kernel test robot warning reported here: https://lore.kernel.org/all/202410241620.oApALow5-lkp@xxxxxxxxx/ Signed-off-by: Zaid Alali <zaidal@xxxxxxxxxxxxxxxxxxxxxx> --- drivers/acpi/apei/einj-core.c | 103 ++++++++++++++++++++-------------- 1 file changed, 60 insertions(+), 43 deletions(-) diff --git a/drivers/acpi/apei/einj-core.c b/drivers/acpi/apei/einj-core.c index 04731a5b01fa..a28310aacbba 100644 --- a/drivers/acpi/apei/einj-core.c +++ b/drivers/acpi/apei/einj-core.c @@ -149,7 +149,7 @@ static DEFINE_MUTEX(einj_mutex); */ bool einj_initialized __ro_after_init; -static void *einj_param; +static void __iomem *einj_param; static void einj_exec_ctx_init(struct apei_exec_context *ctx) { @@ -214,21 +214,23 @@ static void check_vendor_extension(u64 paddr, struct set_error_type_with_address *v5param) { int offset = v5param->vendor_extension; - struct vendor_error_type_extension *v; + struct vendor_error_type_extension v; + void __iomem *p; u32 sbdf; if (!offset) return; - v = acpi_os_map_iomem(paddr + offset, sizeof(*v)); - if (!v) + p = acpi_os_map_iomem(paddr + offset, sizeof(v)); + if (!p) return; - get_oem_vendor_struct(paddr, offset, v); - sbdf = v->pcie_sbdf; + memcpy_fromio(&v, p, sizeof(v)); + get_oem_vendor_struct(paddr, offset, &v); + sbdf = v.pcie_sbdf; sprintf(vendor_dev, "%x:%x:%x.%x vendor_id=%x device_id=%x rev_id=%x\n", sbdf >> 24, (sbdf >> 16) & 0xff, (sbdf >> 11) & 0x1f, (sbdf >> 8) & 0x7, - v->vendor_id, v->device_id, v->rev_id); - acpi_os_unmap_iomem(v, sizeof(*v)); + v.vendor_id, v.device_id, v.rev_id); + acpi_os_unmap_iomem(p, sizeof(v)); } static void *einj_get_parameter_address(void) @@ -252,26 +254,30 @@ static void *einj_get_parameter_address(void) entry++; } if (pa_v5) { - struct set_error_type_with_address *v5param; + struct set_error_type_with_address v5param; + void __iomem *p; - v5param = acpi_os_map_iomem(pa_v5, sizeof(*v5param)); - if (v5param) { + p = acpi_os_map_iomem(pa_v5, sizeof(v5param)); + if (p) { + memcpy_fromio(&v5param, p, sizeof(v5param)); acpi5 = 1; - check_vendor_extension(pa_v5, v5param); - return v5param; + check_vendor_extension(pa_v5, &v5param); + return p; } } if (param_extension && pa_v4) { - struct einj_parameter *v4param; + struct einj_parameter v4param; + void __iomem *p; - v4param = acpi_os_map_iomem(pa_v4, sizeof(*v4param)); - if (!v4param) + p = acpi_os_map_iomem(pa_v4, sizeof(v4param)); + if (!p) return NULL; - if (v4param->reserved1 || v4param->reserved2) { - acpi_os_unmap_iomem(v4param, sizeof(*v4param)); + memcpy_fromio(&v4param, p, sizeof(v4param)); + if (v4param.reserved1 || v4param.reserved2) { + acpi_os_unmap_iomem(p, sizeof(v4param)); return NULL; } - return v4param; + return p; } return NULL; @@ -317,7 +323,7 @@ static struct acpi_generic_address *einj_get_trigger_parameter_region( static int __einj_error_trigger(u64 trigger_paddr, u32 type, u64 param1, u64 param2) { - struct acpi_einj_trigger *trigger_tab = NULL; + struct acpi_einj_trigger trigger_tab; struct apei_exec_context trigger_ctx; struct apei_resources trigger_resources; struct acpi_whea_header *trigger_entry; @@ -325,54 +331,57 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type, u32 table_size; int rc = -EIO; struct acpi_generic_address *trigger_param_region = NULL; + void __iomem *p; - r = request_mem_region(trigger_paddr, sizeof(*trigger_tab), + r = request_mem_region(trigger_paddr, sizeof(trigger_tab), "APEI EINJ Trigger Table"); if (!r) { pr_err("Can not request [mem %#010llx-%#010llx] for Trigger table\n", (unsigned long long)trigger_paddr, (unsigned long long)trigger_paddr + - sizeof(*trigger_tab) - 1); + sizeof(trigger_tab) - 1); goto out; } - trigger_tab = ioremap_cache(trigger_paddr, sizeof(*trigger_tab)); - if (!trigger_tab) { + p = ioremap_cache(trigger_paddr, sizeof(trigger_tab)); + if (!p) { pr_err("Failed to map trigger table!\n"); goto out_rel_header; } - rc = einj_check_trigger_header(trigger_tab); + memcpy_fromio(&trigger_tab, p, sizeof(trigger_tab)); + rc = einj_check_trigger_header(&trigger_tab); if (rc) { pr_warn(FW_BUG "Invalid trigger error action table.\n"); goto out_rel_header; } /* No action structures in the TRIGGER_ERROR table, nothing to do */ - if (!trigger_tab->entry_count) + if (!trigger_tab.entry_count) goto out_rel_header; rc = -EIO; - table_size = trigger_tab->table_size; - r = request_mem_region(trigger_paddr + sizeof(*trigger_tab), - table_size - sizeof(*trigger_tab), + table_size = trigger_tab.table_size; + r = request_mem_region(trigger_paddr + sizeof(trigger_tab), + table_size - sizeof(trigger_tab), "APEI EINJ Trigger Table"); if (!r) { pr_err("Can not request [mem %#010llx-%#010llx] for Trigger Table Entry\n", - (unsigned long long)trigger_paddr + sizeof(*trigger_tab), + (unsigned long long)trigger_paddr + sizeof(trigger_tab), (unsigned long long)trigger_paddr + table_size - 1); goto out_rel_header; } - iounmap(trigger_tab); - trigger_tab = ioremap_cache(trigger_paddr, table_size); - if (!trigger_tab) { + iounmap(p); + p = ioremap_cache(trigger_paddr, table_size); + if (!p) { pr_err("Failed to map trigger table!\n"); goto out_rel_entry; } + memcpy_fromio(&trigger_tab, p, sizeof(trigger_tab)); trigger_entry = (struct acpi_whea_header *) - ((char *)trigger_tab + sizeof(struct acpi_einj_trigger)); + ((char *)&trigger_tab + sizeof(struct acpi_einj_trigger)); apei_resources_init(&trigger_resources); apei_exec_ctx_init(&trigger_ctx, einj_ins_type, ARRAY_SIZE(einj_ins_type), - trigger_entry, trigger_tab->entry_count); + trigger_entry, trigger_tab.entry_count); rc = apei_exec_collect_resources(&trigger_ctx, &trigger_resources); if (rc) goto out_fini; @@ -390,7 +399,7 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type, apei_resources_init(&addr_resources); trigger_param_region = einj_get_trigger_parameter_region( - trigger_tab, param1, param2); + &trigger_tab, param1, param2); if (trigger_param_region) { rc = apei_resources_add(&addr_resources, trigger_param_region->address, @@ -419,13 +428,13 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type, out_fini: apei_resources_fini(&trigger_resources); out_rel_entry: - release_mem_region(trigger_paddr + sizeof(*trigger_tab), - table_size - sizeof(*trigger_tab)); + release_mem_region(trigger_paddr + sizeof(trigger_tab), + table_size - sizeof(trigger_tab)); out_rel_header: - release_mem_region(trigger_paddr, sizeof(*trigger_tab)); + release_mem_region(trigger_paddr, sizeof(trigger_tab)); out: - if (trigger_tab) - iounmap(trigger_tab); + if (p) + iounmap(p); return rc; } @@ -444,8 +453,10 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2, return rc; apei_exec_ctx_set_input(&ctx, type); if (acpi5) { - struct set_error_type_with_address *v5param = einj_param; + struct set_error_type_with_address *v5param; + v5param = kmalloc(sizeof(*v5param), GFP_KERNEL); + memcpy_fromio(v5param, einj_param, sizeof(*v5param)); v5param->type = type; if (type & ACPI5_VENDOR_BIT) { switch (vendor_flags) { @@ -490,15 +501,21 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2, break; } } + memcpy_toio(einj_param, v5param, sizeof(*v5param)); + kfree(v5param); } else { rc = apei_exec_run(&ctx, ACPI_EINJ_SET_ERROR_TYPE); if (rc) return rc; if (einj_param) { - struct einj_parameter *v4param = einj_param; + struct einj_parameter *v4param; + v4param = kmalloc(sizeof(*v4param), GFP_KERNEL); + memcpy_fromio(v4param, einj_param, sizeof(*v4param)); v4param->param1 = param1; v4param->param2 = param2; + memcpy_toio(einj_param, v4param, sizeof(*v4param)); + kfree(v4param); } } rc = apei_exec_run(&ctx, ACPI_EINJ_EXECUTE_OPERATION); -- 2.34.1
