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[openeuler:openEuler-1.0-LTS] BUILD REGRESSION bd281fec9a629fc56d2e07e32f8e719201dfc38f
by kernel test robot 10 Oct '24

10 Oct '24

tree/branch: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS branch HEAD: bd281fec9a629fc56d2e07e32f8e719201dfc38f !12069 platform/x86: panasonic-laptop: Fix SINF array out of bounds accesses Error/Warning ids grouped by kconfigs: recent_errors |-- arm64-allnoconfig | `-- kernel-sched-core.c:error:implicit-declaration-of-function-init_auto_affinity |-- arm64-randconfig-001-20241010 | `-- arch-arm64-mm-init.c:error:mem_sleep_current-undeclared-(first-use-in-this-function) |-- arm64-randconfig-002-20241010 | |-- drivers-clocksource-arm_arch_timer.c:error:hisi_161010101_read_cntvct_el0-undeclared-(first-use-in-this-function) | |-- drivers-gpu-drm-phytium-phytium_pci.c:error:implicit-declaration-of-function-pci_disable_msi | |-- drivers-gpu-drm-phytium-phytium_pci.c:error:implicit-declaration-of-function-pci_enable_msi | `-- mm-pin_mem.c:error:lvalue-required-as-unary-operand |-- arm64-randconfig-003-20241010 | |-- drivers-misc-uacce-uacce.c:error:implicit-declaration-of-function-module_refcount | `-- mm-mem_reliable.c:warning:zero-defined-but-not-used |-- arm64-randconfig-004-20241010 | |-- drivers-misc-uacce-uacce.c:error:implicit-declaration-of-function-module_refcount | `-- kernel-sched-core.c:error:implicit-declaration-of-function-init_auto_affinity |-- x86_64-allnoconfig | `-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa-Werror-Wimplicit-function-declaration |-- x86_64-allyesconfig | `-- drivers-net-ethernet-stmicro-stmmac-dwmac-phytium.c:error:incompatible-pointer-to-integer-conversion-returning-void-from-a-function-with-result-type-int |-- x86_64-buildonly-randconfig-001-20241010 | `-- drivers-misc-uacce-uacce.c:error:implicit-declaration-of-function-module_refcount |-- x86_64-buildonly-randconfig-002-20241010 | `-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa-Werror-Wimplicit-function-declaration |-- x86_64-buildonly-randconfig-003-20241010 | |-- drivers-char-hw_random-zhaoxin-rng.o:warning:objtool:missing-symbol-for-section-.init.text | |-- drivers-char-ipmi-ipmi_si_intf.o:warning:objtool:missing-symbol-for-section-.init.text | |-- drivers-hwtracing-intel_th-msu-sink.o:warning:objtool:missing-symbol-for-section-.init.text | `-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa-Werror-Wimplicit-function-declaration |-- x86_64-buildonly-randconfig-005-20241010 | `-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa-Werror-Wimplicit-function-declaration |-- x86_64-kexec | `-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa-Werror-Wimplicit-function-declaration `-- x86_64-randconfig-161-20241010 `-- kernel-sched-core.c:error:implicit-declaration-of-function-init_auto_affinity elapsed time: 828m configs tested: 18 configs skipped: 138 tested configs: arm64 allmodconfig gcc-14.1.0 arm64 allnoconfig gcc-14.1.0 arm64 randconfig-001-20241010 gcc-14.1.0 arm64 randconfig-002-20241010 gcc-14.1.0 arm64 randconfig-003-20241010 gcc-14.1.0 arm64 randconfig-004-20241010 gcc-14.1.0 x86_64 alldefconfig gcc-12 x86_64 allnoconfig clang-18 x86_64 allyesconfig clang-18 x86_64 buildonly-randconfig-001-20241010 gcc-12 x86_64 buildonly-randconfig-002-20241010 clang-18 x86_64 buildonly-randconfig-003-20241010 clang-18 x86_64 buildonly-randconfig-004-20241010 gcc-12 x86_64 buildonly-randconfig-005-20241010 clang-18 x86_64 defconfig gcc-11 x86_64 kexec clang-18 x86_64 rhel-8.3 gcc-12 x86_64 rhel-8.3-rust clang-18 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 21254/23825] drivers/gpu/drm/phytium/phytium_pci.c:237:23: error: implicit declaration of function 'pci_enable_msi'; did you mean 'pci_enable_sriov'?
by kernel test robot 10 Oct '24

10 Oct '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: bd281fec9a629fc56d2e07e32f8e719201dfc38f commit: cad0702e5286d3cc80afe545de027858b855dd5a [21254/23825] DRM: Phytium display DRM driver config: arm64-randconfig-002-20241010 (https://download.01.org/0day-ci/archive/20241010/202410100635.fEGuT7Zt-lkp@…) compiler: aarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241010/202410100635.fEGuT7Zt-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202410100635.fEGuT7Zt-lkp@intel.com/ All errors (new ones prefixed by >>): drivers/gpu/drm/phytium/phytium_pci.c:23:6: warning: no previous prototype for 'phytium_pci_vram_hw_init' [-Wmissing-prototypes] 23 | void phytium_pci_vram_hw_init(struct phytium_display_private *priv) | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/phytium/phytium_pci.c:30:5: warning: no previous prototype for 'phytium_pci_vram_init' [-Wmissing-prototypes] 30 | int phytium_pci_vram_init(struct pci_dev *pdev, struct phytium_display_private *priv) | ^~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/phytium/phytium_pci.c:68:6: warning: no previous prototype for 'phytium_pci_vram_fini' [-Wmissing-prototypes] 68 | void phytium_pci_vram_fini(struct pci_dev *pdev, struct phytium_display_private *priv) | ^~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/phytium/phytium_pci.c:89:5: warning: no previous prototype for 'phytium_pci_dma_init' [-Wmissing-prototypes] 89 | int phytium_pci_dma_init(struct phytium_display_private *priv) | ^~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/phytium/phytium_pci.c: In function 'phytium_pci_dma_init': drivers/gpu/drm/phytium/phytium_pci.c:99:34: error: 'PCI_VENDOR_ID_PHYTIUM' undeclared (first use in this function); did you mean 'PCI_VENDOR_ID_PHILIPS'? 99 | gpu_dev = pci_get_device(PCI_VENDOR_ID_PHYTIUM, 0xdc20, NULL); | ^~~~~~~~~~~~~~~~~~~~~ | PCI_VENDOR_ID_PHILIPS drivers/gpu/drm/phytium/phytium_pci.c:99:34: note: each undeclared identifier is reported only once for each function it appears in drivers/gpu/drm/phytium/phytium_pci.c: At top level: drivers/gpu/drm/phytium/phytium_pci.c:137:6: warning: no previous prototype for 'phytium_pci_dma_fini' [-Wmissing-prototypes] 137 | void phytium_pci_dma_fini(struct phytium_display_private *priv) | ^~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/phytium/phytium_pci.c: In function 'phytium_pci_probe': >> drivers/gpu/drm/phytium/phytium_pci.c:237:23: error: implicit declaration of function 'pci_enable_msi'; did you mean 'pci_enable_sriov'? [-Werror=implicit-function-declaration] 237 | ret = pci_enable_msi(pdev); | ^~~~~~~~~~~~~~ | pci_enable_sriov >> drivers/gpu/drm/phytium/phytium_pci.c:272:17: error: implicit declaration of function 'pci_disable_msi'; did you mean 'pci_disable_sriov'? [-Werror=implicit-function-declaration] 272 | pci_disable_msi(pdev); | ^~~~~~~~~~~~~~~ | pci_disable_sriov In file included from drivers/gpu/drm/phytium/phytium_pci.c:7: drivers/gpu/drm/phytium/phytium_pci.c: At top level: include/linux/pci.h:888:19: error: 'PCI_VENDOR_ID_PHYTIUM' undeclared here (not in a function); did you mean 'PCI_VENDOR_ID_PHILIPS'? 888 | .vendor = PCI_VENDOR_ID_##vend, .device = (dev), \ | ^~~~~~~~~~~~~~ drivers/gpu/drm/phytium/phytium_pci.c:375:11: note: in expansion of macro 'PCI_VDEVICE' 375 | { PCI_VDEVICE(PHYTIUM, 0xdc22), (kernel_ulong_t)&x100_info }, | ^~~~~~~~~~~ cc1: some warnings being treated as errors vim +237 drivers/gpu/drm/phytium/phytium_pci.c 88 89 int phytium_pci_dma_init(struct phytium_display_private *priv) 90 { 91 struct pci_dev *dma_dev, *gpu_dev; 92 struct drm_device *drm_dev = priv->dev; 93 dma_cap_mask_t mask; 94 struct phytium_dma_slave s; 95 int ret = 0; 96 u16 cmd; 97 98 /* check x100 gpu enable */ > 99 gpu_dev = pci_get_device(PCI_VENDOR_ID_PHYTIUM, 0xdc20, NULL); 100 if (!gpu_dev) { 101 DRM_INFO("failed to get gpu_dev\n"); 102 ret = -ENODEV; 103 goto failed; 104 } 105 106 pci_read_config_word(gpu_dev, PCI_COMMAND, &cmd); 107 if (!(cmd & PCI_COMMAND_MASTER)) { 108 DRM_INFO("gpu_dev master is disabled\n"); 109 ret = -ENODEV; 110 goto failed; 111 } 112 113 dma_dev = pci_get_device(PCI_VENDOR_ID_PHYTIUM, 0xdc3c, NULL); 114 if (!dma_dev) { 115 DRM_INFO("failed to get dma_dev\n"); 116 ret = -ENODEV; 117 goto failed; 118 } 119 120 dma_cap_zero(mask); 121 dma_cap_set(DMA_SLAVE, mask); 122 123 s.dma_dev = &dma_dev->dev; 124 s.chan_id = 2; 125 priv->dma_chan = dma_request_channel(mask, phytium_pci_dma_chan_filter, &s); 126 if (!priv->dma_chan) { 127 DRM_DEV_ERROR(drm_dev->dev, "failed to request dma chan\n"); 128 ret = -EBUSY; 129 goto failed; 130 } 131 priv->dma_inited = 1; 132 133 failed: 134 return ret; 135 } 136 > 137 void phytium_pci_dma_fini(struct phytium_display_private *priv) 138 { 139 if (priv->dma_inited) 140 dma_release_channel(priv->dma_chan); 141 priv->dma_inited = 0; 142 priv->dma_chan = NULL; 143 } 144 145 static struct phytium_display_private* 146 phytium_pci_private_init(struct pci_dev *pdev, const struct pci_device_id *ent) 147 { 148 struct drm_device *dev = pci_get_drvdata(pdev); 149 struct phytium_display_private *priv = NULL; 150 struct phytium_pci_private *pci_priv = NULL; 151 struct phytium_device_info *phytium_info = (struct phytium_device_info *)ent->driver_data; 152 int i = 0; 153 resource_size_t io_addr, io_size; 154 155 pci_priv = devm_kzalloc(&pdev->dev, sizeof(*pci_priv), GFP_KERNEL); 156 if (!pci_priv) { 157 DRM_ERROR("no memory to allocate for drm_display_private\n"); 158 goto failed_malloc_priv; 159 } 160 161 memset(pci_priv, 0, sizeof(*pci_priv)); 162 priv = &pci_priv->base; 163 phytium_display_private_init(priv, dev); 164 165 memcpy(&(priv->info), phytium_info, sizeof(struct phytium_device_info)); 166 DRM_DEBUG_KMS("priv->info.num_pipes :%d\n", priv->info.num_pipes); 167 priv->info.pipe_mask = ((pdev->subsystem_device >> PIPE_MASK_SHIFT) & PIPE_MASK_MASK); 168 priv->info.edp_mask = ((pdev->subsystem_device >> EDP_MASK_SHIFT) & EDP_MASK_MASK); 169 priv->info.num_pipes = 0; 170 for_each_pipe_masked(priv, i) 171 priv->info.num_pipes++; 172 if (priv->info.num_pipes == 0) { 173 DRM_ERROR("num_pipes is zero, so exit init\n"); 174 goto failed_init_numpipe; 175 } 176 177 io_addr = pci_resource_start(pdev, 0); 178 io_size = pci_resource_len(pdev, 0); 179 priv->regs = ioremap(io_addr, io_size); 180 if (priv->regs == NULL) { 181 DRM_ERROR("pci bar0 ioremap fail, addr:0x%llx, size:0x%llx\n", io_addr, io_size); 182 goto failed_ioremap; 183 } 184 185 priv->irq = pdev->irq; 186 if (IS_X100(priv)) { 187 pci_priv->dc_hw_vram_init = x100_dc_hw_vram_init; 188 priv->dc_hw_clear_msi_irq = x100_dc_hw_clear_msi_irq; 189 priv->dc_hw_fb_format_check = x100_dc_hw_fb_format_check; 190 } else if (IS_E2000(priv)) { 191 pci_priv->dc_hw_vram_init = e2000_dc_hw_vram_init; 192 priv->dc_hw_clear_msi_irq = NULL; 193 priv->dc_hw_fb_format_check = e2000_dc_hw_fb_format_check; 194 } 195 196 return priv; 197 198 failed_ioremap: 199 failed_init_numpipe: 200 devm_kfree(&pdev->dev, pci_priv); 201 failed_malloc_priv: 202 return NULL; 203 } 204 205 static void 206 phytium_pci_private_fini(struct pci_dev *pdev, struct phytium_display_private *priv) 207 { 208 struct phytium_pci_private *pci_priv = to_pci_priv(priv); 209 210 if (priv->regs) 211 iounmap(priv->regs); 212 213 devm_kfree(&pdev->dev, pci_priv); 214 } 215 216 static int phytium_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 217 { 218 struct phytium_display_private *priv = NULL; 219 struct drm_device *dev = NULL; 220 int ret = 0; 221 222 dev = drm_dev_alloc(&phytium_display_drm_driver, &pdev->dev); 223 if (IS_ERR(dev)) { 224 DRM_ERROR("failed to allocate drm_device\n"); 225 return PTR_ERR(dev); 226 } 227 dev->pdev = pdev; 228 pci_set_drvdata(pdev, dev); 229 pci_set_master(pdev); 230 ret = pci_enable_device(pdev); 231 if (ret) { 232 DRM_ERROR("pci enbale device fail\n"); 233 goto failed_enable_device; 234 } 235 236 if (dc_msi_enable) { > 237 ret = pci_enable_msi(pdev); 238 if (ret) 239 DRM_ERROR("pci enbale msi fail\n"); 240 } 241 242 dma_set_mask(&pdev->dev, DMA_BIT_MASK(40)); 243 244 priv = phytium_pci_private_init(pdev, ent); 245 if (priv) 246 dev->dev_private = priv; 247 else 248 goto failed_pci_private_init; 249 250 ret = phytium_pci_vram_init(pdev, priv); 251 if (ret) { 252 DRM_ERROR("failed to init pci vram\n"); 253 goto failed_pci_vram_init; 254 } 255 256 ret = drm_dev_register(dev, 0); 257 if (ret) { 258 DRM_ERROR("failed to register drm dev\n"); 259 goto failed_register_drm; 260 } 261 262 phytium_dp_hpd_irq_setup(dev, true); 263 264 return 0; 265 266 failed_register_drm: 267 phytium_pci_vram_fini(pdev, priv); 268 failed_pci_vram_init: 269 phytium_pci_private_fini(pdev, priv); 270 failed_pci_private_init: 271 if (pdev->msi_enabled) > 272 pci_disable_msi(pdev); 273 pci_disable_device(pdev); 274 failed_enable_device: 275 pci_set_drvdata(pdev, NULL); 276 drm_dev_put(dev); 277 278 return -1; 279 } 280 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3405/14324] drivers/gpu/drm/phytium/phytium_pci.c:236:9: error: call to undeclared function 'pci_enable_msi'; ISO C99 and later do not support implicit function declarations
by kernel test robot 10 Oct '24

10 Oct '24

Hi Li, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 5d76abff5e121f2d916bcbc121f558c82e5dc221 commit: 792b82446538ed840a6e23b89673ce21564702bd [3405/14324] Fix gic support for Phytium S2500 config: arm64-randconfig-002-20241010 (https://download.01.org/0day-ci/archive/20241010/202410100523.x3WsGWyG-lkp@…) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 70e0a7e7e6a8541bcc46908c592eed561850e416) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241010/202410100523.x3WsGWyG-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202410100523.x3WsGWyG-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from drivers/gpu/drm/phytium/phytium_pci.c:7: In file included from include/linux/pci.h:2106: In file included from arch/arm64/include/asm/pci.h:7: In file included from include/linux/dma-mapping.h:11: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2193: include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ drivers/gpu/drm/phytium/phytium_pci.c:23:6: warning: no previous prototype for function 'phytium_pci_vram_hw_init' [-Wmissing-prototypes] 23 | void phytium_pci_vram_hw_init(struct phytium_display_private *priv) | ^ drivers/gpu/drm/phytium/phytium_pci.c:23:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 23 | void phytium_pci_vram_hw_init(struct phytium_display_private *priv) | ^ | static drivers/gpu/drm/phytium/phytium_pci.c:30:5: warning: no previous prototype for function 'phytium_pci_vram_init' [-Wmissing-prototypes] 30 | int phytium_pci_vram_init(struct pci_dev *pdev, struct phytium_display_private *priv) | ^ drivers/gpu/drm/phytium/phytium_pci.c:30:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 30 | int phytium_pci_vram_init(struct pci_dev *pdev, struct phytium_display_private *priv) | ^ | static drivers/gpu/drm/phytium/phytium_pci.c:68:6: warning: no previous prototype for function 'phytium_pci_vram_fini' [-Wmissing-prototypes] 68 | void phytium_pci_vram_fini(struct pci_dev *pdev, struct phytium_display_private *priv) | ^ drivers/gpu/drm/phytium/phytium_pci.c:68:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 68 | void phytium_pci_vram_fini(struct pci_dev *pdev, struct phytium_display_private *priv) | ^ | static drivers/gpu/drm/phytium/phytium_pci.c:89:5: warning: no previous prototype for function 'phytium_pci_dma_init' [-Wmissing-prototypes] 89 | int phytium_pci_dma_init(struct phytium_display_private *priv) | ^ drivers/gpu/drm/phytium/phytium_pci.c:89:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 89 | int phytium_pci_dma_init(struct phytium_display_private *priv) | ^ | static drivers/gpu/drm/phytium/phytium_pci.c:137:6: warning: no previous prototype for function 'phytium_pci_dma_fini' [-Wmissing-prototypes] 137 | void phytium_pci_dma_fini(struct phytium_display_private *priv) | ^ drivers/gpu/drm/phytium/phytium_pci.c:137:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 137 | void phytium_pci_dma_fini(struct phytium_display_private *priv) | ^ | static >> drivers/gpu/drm/phytium/phytium_pci.c:236:9: error: call to undeclared function 'pci_enable_msi'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 236 | ret = pci_enable_msi(pdev); | ^ >> drivers/gpu/drm/phytium/phytium_pci.c:271:3: error: call to undeclared function 'pci_disable_msi'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 271 | pci_disable_msi(pdev); | ^ drivers/gpu/drm/phytium/phytium_pci.c:271:3: note: did you mean 'pci_disable_sriov'? include/linux/pci.h:2437:20: note: 'pci_disable_sriov' declared here 2437 | static inline void pci_disable_sriov(struct pci_dev *dev) { } | ^ drivers/gpu/drm/phytium/phytium_pci.c:291:3: error: call to undeclared function 'pci_disable_msi'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 291 | pci_disable_msi(pdev); | ^ 6 warnings and 3 errors generated. vim +/pci_enable_msi +236 drivers/gpu/drm/phytium/phytium_pci.c b80df10f845813 lishuo 2024-01-31 215 b80df10f845813 lishuo 2024-01-31 216 static int phytium_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) b80df10f845813 lishuo 2024-01-31 217 { b80df10f845813 lishuo 2024-01-31 218 struct phytium_display_private *priv = NULL; b80df10f845813 lishuo 2024-01-31 219 struct drm_device *dev = NULL; b80df10f845813 lishuo 2024-01-31 220 int ret = 0; b80df10f845813 lishuo 2024-01-31 221 b80df10f845813 lishuo 2024-01-31 222 dev = drm_dev_alloc(&phytium_display_drm_driver, &pdev->dev); b80df10f845813 lishuo 2024-01-31 223 if (IS_ERR(dev)) { b80df10f845813 lishuo 2024-01-31 224 DRM_ERROR("failed to allocate drm_device\n"); b80df10f845813 lishuo 2024-01-31 225 return PTR_ERR(dev); b80df10f845813 lishuo 2024-01-31 226 } b80df10f845813 lishuo 2024-01-31 227 pci_set_drvdata(pdev, dev); b80df10f845813 lishuo 2024-01-31 228 pci_set_master(pdev); b80df10f845813 lishuo 2024-01-31 229 ret = pci_enable_device(pdev); b80df10f845813 lishuo 2024-01-31 230 if (ret) { b80df10f845813 lishuo 2024-01-31 231 DRM_ERROR("pci enable device fail\n"); b80df10f845813 lishuo 2024-01-31 232 goto failed_enable_device; b80df10f845813 lishuo 2024-01-31 233 } b80df10f845813 lishuo 2024-01-31 234 b80df10f845813 lishuo 2024-01-31 235 if (dc_msi_enable) { b80df10f845813 lishuo 2024-01-31 @236 ret = pci_enable_msi(pdev); b80df10f845813 lishuo 2024-01-31 237 if (ret) b80df10f845813 lishuo 2024-01-31 238 DRM_ERROR("pci enable msi fail\n"); b80df10f845813 lishuo 2024-01-31 239 } b80df10f845813 lishuo 2024-01-31 240 b80df10f845813 lishuo 2024-01-31 241 dma_set_mask(&pdev->dev, DMA_BIT_MASK(40)); b80df10f845813 lishuo 2024-01-31 242 b80df10f845813 lishuo 2024-01-31 243 priv = phytium_pci_private_init(pdev, ent); b80df10f845813 lishuo 2024-01-31 244 if (priv) b80df10f845813 lishuo 2024-01-31 245 dev->dev_private = priv; b80df10f845813 lishuo 2024-01-31 246 else b80df10f845813 lishuo 2024-01-31 247 goto failed_pci_private_init; b80df10f845813 lishuo 2024-01-31 248 b80df10f845813 lishuo 2024-01-31 249 ret = phytium_pci_vram_init(pdev, priv); b80df10f845813 lishuo 2024-01-31 250 if (ret) { b80df10f845813 lishuo 2024-01-31 251 DRM_ERROR("failed to init pci vram\n"); b80df10f845813 lishuo 2024-01-31 252 goto failed_pci_vram_init; b80df10f845813 lishuo 2024-01-31 253 } b80df10f845813 lishuo 2024-01-31 254 b80df10f845813 lishuo 2024-01-31 255 ret = drm_dev_register(dev, 0); b80df10f845813 lishuo 2024-01-31 256 if (ret) { b80df10f845813 lishuo 2024-01-31 257 DRM_ERROR("failed to register drm dev\n"); b80df10f845813 lishuo 2024-01-31 258 goto failed_register_drm; b80df10f845813 lishuo 2024-01-31 259 } b80df10f845813 lishuo 2024-01-31 260 b80df10f845813 lishuo 2024-01-31 261 phytium_dp_hpd_irq_setup(dev, true); b80df10f845813 lishuo 2024-01-31 262 b80df10f845813 lishuo 2024-01-31 263 return 0; b80df10f845813 lishuo 2024-01-31 264 b80df10f845813 lishuo 2024-01-31 265 failed_register_drm: b80df10f845813 lishuo 2024-01-31 266 phytium_pci_vram_fini(pdev, priv); b80df10f845813 lishuo 2024-01-31 267 failed_pci_vram_init: b80df10f845813 lishuo 2024-01-31 268 phytium_pci_private_fini(pdev, priv); b80df10f845813 lishuo 2024-01-31 269 failed_pci_private_init: b80df10f845813 lishuo 2024-01-31 270 if (pdev->msi_enabled) b80df10f845813 lishuo 2024-01-31 @271 pci_disable_msi(pdev); b80df10f845813 lishuo 2024-01-31 272 pci_disable_device(pdev); b80df10f845813 lishuo 2024-01-31 273 failed_enable_device: b80df10f845813 lishuo 2024-01-31 274 pci_set_drvdata(pdev, NULL); b80df10f845813 lishuo 2024-01-31 275 drm_dev_put(dev); b80df10f845813 lishuo 2024-01-31 276 b80df10f845813 lishuo 2024-01-31 277 return -1; b80df10f845813 lishuo 2024-01-31 278 } b80df10f845813 lishuo 2024-01-31 279 :::::: The code at line 236 was first introduced by commit :::::: b80df10f845813bb4fc2002b5386ecdfa8be5f6c DRM: Phytium display DRM driver :::::: TO: lishuo <lishuo(a)phytium.com.cn> :::::: CC: lishuo <lishuo(a)phytium.com.cn> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10] BUILD REGRESSION c9c7afae6802fd2282529d80c0f808360f7b654a
by kernel test robot 10 Oct '24

10 Oct '24

tree/branch: https://gitee.com/openeuler/kernel.git OLK-5.10 branch HEAD: c9c7afae6802fd2282529d80c0f808360f7b654a !12050 um: line: always fill *error_out in setup_one_line() Unverified Error/Warning (likely false positive, kindly check if interested): drivers/gpu/drm/loongson/lsdc_plane.o: warning: objtool: lsdc_plane_init() falls through to next function lsdc_plane_reset() drivers/infiniband/hw/vmw_pvrdma/pvrdma_qp.o: warning: objtool: pvrdma_create_qp() falls through to next function pvrdma_destroy_qp() Error/Warning ids grouped by kconfigs: recent_errors |-- arm64-allnoconfig | |-- arch-arm64-kernel-ipi_nmi.c:error:implicit-declaration-of-function-printk_safe_exit | |-- kernel-workqueue.c:error:implicit-declaration-of-function-printk_safe_enter | `-- kernel-workqueue.c:error:implicit-declaration-of-function-printk_safe_exit |-- arm64-defconfig | `-- drivers-net-ethernet-hisilicon-hns3-hns3pf-hclge_main.c:warning:implicit-conversion-from-enum-hclge_ext_opcode_type-to-enum-hclge_opcode_type |-- arm64-randconfig-002-20241010 | `-- arch-arm64-include-asm-stack_pointer.h:error:register-sp-unsuitable-for-global-register-variables-on-this-target |-- arm64-randconfig-003-20241010 | |-- arch-arm64-include-asm-archrandom.h:error:unknown-register-name-r0-in-asm | |-- arch-arm64-include-asm-archrandom.h:error:unknown-register-name-r1-in-asm | |-- arch-arm64-include-asm-archrandom.h:error:unknown-register-name-r2-in-asm | |-- arch-arm64-include-asm-archrandom.h:error:unknown-register-name-r3-in-asm | |-- arch-arm64-include-asm-archrandom.h:error:unknown-register-name-x16-in-asm | `-- arch-arm64-include-asm-stack_pointer.h:error:register-sp-unsuitable-for-global-register-variables-on-this-target |-- x86_64-allnoconfig | `-- kernel-workqueue.c:error:implicit-declaration-of-function-printk_safe_enter-Werror-Wimplicit-function-declaration |-- x86_64-allyesconfig | |-- kernel-sched-core.c:warning:no-previous-prototype-for-function-sched_setsteal | |-- kernel-sched-core.c:warning:no-previous-prototype-for-function-tg_change_steal | |-- ld.lld:error:duplicate-symbol:debug | |-- ld.lld:error:duplicate-symbol:lld_dev_hold | `-- ld.lld:error:duplicate-symbol:lld_dev_put |-- x86_64-buildonly-randconfig-001-20241010 | `-- kernel-sched-topology.c:error:implicit-declaration-of-function-register_sysctl_init |-- x86_64-buildonly-randconfig-002-20241010 | `-- kernel-workqueue.c:error:implicit-declaration-of-function-printk_safe_enter-Werror-Wimplicit-function-declaration |-- x86_64-buildonly-randconfig-005-20241009 | `-- drivers-gpu-drm-loongson-lsdc_plane.o:warning:objtool:lsdc_plane_init-falls-through-to-next-function-lsdc_plane_reset() |-- x86_64-buildonly-randconfig-006-20241010 | |-- arch-x86-kernel-paravirt.c:error:implicit-declaration-of-function-__text_gen_insn-Werror-Wimplicit-function-declaration | |-- arch-x86-kernel-paravirt.c:error:use-of-undeclared-identifier-CALL_INSN_OPCODE | |-- arch-x86-kernel-paravirt.c:error:use-of-undeclared-identifier-CALL_INSN_SIZE | `-- kernel-workqueue.c:error:implicit-declaration-of-function-printk_safe_enter-Werror-Wimplicit-function-declaration |-- x86_64-kexec | `-- arch-x86-kvm-vmx-vmx.o:warning:objtool:fix_rmode_seg:unreachable-instruction |-- x86_64-randconfig-016-20241009 | `-- drivers-fpga-dfl.o:warning:objtool:dfl_fpga_cdev_config_ports_pf:unreachable-instruction |-- x86_64-randconfig-075-20241009 | `-- drivers-infiniband-hw-vmw_pvrdma-pvrdma_qp.o:warning:objtool:pvrdma_create_qp-falls-through-to-next-function-pvrdma_destroy_qp() |-- x86_64-rhel-8.3 | `-- drivers-acpi-numa-hmat.c:warning:no-previous-prototype-for-hmat_restore_target |-- x86_64-rhel-8.3-func | `-- drivers-acpi-numa-hmat.c:warning:no-previous-prototype-for-hmat_restore_target `-- x86_64-rhel-8.3-kselftests `-- drivers-acpi-numa-hmat.c:warning:no-previous-prototype-for-hmat_restore_target elapsed time: 805m configs tested: 19 configs skipped: 138 tested configs: arm64 allmodconfig clang-20 arm64 allnoconfig gcc-14.1.0 arm64 defconfig gcc-14.1.0 arm64 randconfig-001-20241010 clang-20 arm64 randconfig-002-20241010 clang-20 arm64 randconfig-003-20241010 clang-20 arm64 randconfig-004-20241010 clang-20 x86_64 alldefconfig gcc-12 x86_64 allnoconfig clang-18 x86_64 allyesconfig clang-18 x86_64 buildonly-randconfig-001-20241010 gcc-12 x86_64 buildonly-randconfig-002-20241010 clang-18 x86_64 buildonly-randconfig-003-20241010 clang-18 x86_64 buildonly-randconfig-004-20241010 gcc-12 x86_64 buildonly-randconfig-006-20241010 clang-18 x86_64 defconfig gcc-11 x86_64 kexec clang-18 x86_64 rhel-8.3 gcc-12 x86_64 rhel-8.3-rust clang-18 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6] BUILD REGRESSION 5d76abff5e121f2d916bcbc121f558c82e5dc221
by kernel test robot 10 Oct '24

10 Oct '24

tree/branch: https://gitee.com/openeuler/kernel.git OLK-6.6 branch HEAD: 5d76abff5e121f2d916bcbc121f558c82e5dc221 !12063 cpufreq: intel_pstate: Revise global turbo disable check Error/Warning ids grouped by kconfigs: recent_errors |-- arm64-randconfig-001-20241010 | |-- mm-share_pool.c:error:call-to-undeclared-function-huge_ptep_get-ISO-C99-and-later-do-not-support-implicit-function-declarations | `-- mm-share_pool.c:error:initializing-pte_t-with-an-expression-of-incompatible-type-int |-- arm64-randconfig-002-20241010 | |-- drivers-char-ipmi-ipmi_bt_sm.c:error:call-to-undeclared-function-acpi_evaluate_integer-ISO-C99-and-later-do-not-support-implicit-function-declarations | |-- drivers-ptp-ptp_hisi.c:warning:unused-variable-hisi_ptp_acpi_match | `-- kernel-cgroup-cgroup.c:error:use-of-undeclared-identifier-cgroup_psi_stat_show |-- loongarch-allmodconfig | |-- loongson3-acpi-cpufreq.c:(.text):undefined-reference-to-acpi_processor_register_performance | `-- loongson3-acpi-cpufreq.c:(.text):undefined-reference-to-acpi_processor_unregister_performance |-- loongarch-allnoconfig | `-- drivers-irqchip-irq-loongson-eiointc.c:error:NODES_PER_FLATMODE_NODE-undeclared-(first-use-in-this-function) |-- x86_64-allyesconfig | |-- drivers-crypto-ccp-hygon-csv-dev.c:warning:no-previous-prototype-for-function-vpsp_do_cmd | |-- drivers-crypto-ccp-hygon-vpsp.c:warning:Cannot-understand-brief-Directly-convert-the-gpa-address-into-hpa-and-forward-it-to-PSP | |-- drivers-crypto-ccp-hygon-vpsp.c:warning:Cannot-understand-brief-copy-data-in-gpa-to-host-memory-and-send-it-to-psp-for-processing. | `-- drivers-crypto-ccp-hygon-vpsp.c:warning:This-comment-starts-with-but-isn-t-a-kernel-doc-comment.-Refer-Documentation-doc-guide-kernel-doc.rst |-- x86_64-buildonly-randconfig-001-20241010 | `-- drivers-crypto-ccp-hygon-hct.c:error:struct-device-has-no-member-named-numa_node |-- x86_64-buildonly-randconfig-002-20241010 | `-- include-linux-psp-hygon.h:error:conflicting-types-for-vpsp_try_do_cmd |-- x86_64-rhel-8.3 | |-- drivers-crypto-ccp-hygon-csv-dev.c:warning:no-previous-prototype-for-vpsp_do_cmd | |-- drivers-crypto-ccp-hygon-vpsp.c:warning:Cannot-understand-brief-Directly-convert-the-gpa-address-into-hpa-and-forward-it-to-PSP | |-- drivers-crypto-ccp-hygon-vpsp.c:warning:Cannot-understand-brief-copy-data-in-gpa-to-host-memory-and-send-it-to-psp-for-processing. | `-- drivers-crypto-ccp-hygon-vpsp.c:warning:This-comment-starts-with-but-isn-t-a-kernel-doc-comment.-Refer-Documentation-doc-guide-kernel-doc.rst |-- x86_64-rhel-8.3-func | |-- drivers-crypto-ccp-hygon-csv-dev.c:warning:no-previous-prototype-for-vpsp_do_cmd | |-- drivers-crypto-ccp-hygon-vpsp.c:warning:Cannot-understand-brief-Directly-convert-the-gpa-address-into-hpa-and-forward-it-to-PSP | |-- drivers-crypto-ccp-hygon-vpsp.c:warning:Cannot-understand-brief-copy-data-in-gpa-to-host-memory-and-send-it-to-psp-for-processing. | `-- drivers-crypto-ccp-hygon-vpsp.c:warning:This-comment-starts-with-but-isn-t-a-kernel-doc-comment.-Refer-Documentation-doc-guide-kernel-doc.rst |-- x86_64-rhel-8.3-kselftests | |-- drivers-crypto-ccp-hygon-csv-dev.c:warning:no-previous-prototype-for-vpsp_do_cmd | |-- drivers-crypto-ccp-hygon-vpsp.c:warning:Cannot-understand-brief-Directly-convert-the-gpa-address-into-hpa-and-forward-it-to-PSP | |-- drivers-crypto-ccp-hygon-vpsp.c:warning:Cannot-understand-brief-copy-data-in-gpa-to-host-memory-and-send-it-to-psp-for-processing. | `-- drivers-crypto-ccp-hygon-vpsp.c:warning:This-comment-starts-with-but-isn-t-a-kernel-doc-comment.-Refer-Documentation-doc-guide-kernel-doc.rst `-- x86_64-rhel-8.3-rust |-- drivers-crypto-ccp-hygon-csv-dev.c:warning:no-previous-prototype-for-function-vpsp_do_cmd |-- drivers-crypto-ccp-hygon-vpsp.c:warning:Cannot-understand-brief-Directly-convert-the-gpa-address-into-hpa-and-forward-it-to-PSP |-- drivers-crypto-ccp-hygon-vpsp.c:warning:Cannot-understand-brief-copy-data-in-gpa-to-host-memory-and-send-it-to-psp-for-processing. `-- drivers-crypto-ccp-hygon-vpsp.c:warning:This-comment-starts-with-but-isn-t-a-kernel-doc-comment.-Refer-Documentation-doc-guide-kernel-doc.rst elapsed time: 778m configs tested: 16 configs skipped: 101 tested configs: arm64 allmodconfig clang-20 arm64 allnoconfig gcc-14.1.0 arm64 randconfig-001-20241010 clang-20 arm64 randconfig-002-20241010 clang-20 loongarch allmodconfig gcc-14.1.0 loongarch allnoconfig gcc-14.1.0 x86_64 alldefconfig gcc-12 x86_64 allnoconfig clang-18 x86_64 allyesconfig clang-18 x86_64 buildonly-randconfig-001-20241010 gcc-12 x86_64 buildonly-randconfig-002-20241010 clang-18 x86_64 buildonly-randconfig-003-20241010 clang-18 x86_64 defconfig gcc-11 x86_64 kexec clang-18 x86_64 rhel-8.3 gcc-12 x86_64 rhel-8.3-rust clang-18 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6] ELF: fix kernel.randomize_va_space double read
by Gu Bowen 09 Oct '24

09 Oct '24

From: Alexey Dobriyan <adobriyan(a)gmail.com> stable inclusion from stable-v6.6.51 commit 53f17409abf61f66b6f05aff795e938e5ba811d1 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAU9NT CVE: CVE-2024-46826 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 2a97388a807b6ab5538aa8f8537b2463c6988bd2 ] ELF loader uses "randomize_va_space" twice. It is sysctl and can change at any moment, so 2 loads could see 2 different values in theory with unpredictable consequences. Issue exactly one load for consistent value across one exec. Signed-off-by: Alexey Dobriyan <adobriyan(a)gmail.com> Link: https://lore.kernel.org/r/3329905c-7eb8-400a-8f0a-d87cff979b5b@p183 Signed-off-by: Kees Cook <kees(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Gu Bowen <gubowen5(a)huawei.com> --- fs/binfmt_elf.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 7b3d2d491407..fb2c8d14327a 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -1008,7 +1008,8 @@ static int load_elf_binary(struct linux_binprm *bprm) if (elf_read_implies_exec(*elf_ex, executable_stack)) current->personality |= READ_IMPLIES_EXEC; - if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) + const int snapshot_randomize_va_space = READ_ONCE(randomize_va_space); + if (!(current->personality & ADDR_NO_RANDOMIZE) && snapshot_randomize_va_space) current->flags |= PF_RANDOMIZE; setup_new_exec(bprm); @@ -1300,7 +1301,7 @@ static int load_elf_binary(struct linux_binprm *bprm) mm->end_data = end_data; mm->start_stack = bprm->p; - if ((current->flags & PF_RANDOMIZE) && (randomize_va_space > 1)) { + if ((current->flags & PF_RANDOMIZE) && (snapshot_randomize_va_space > 1)) { /* * For architectures with ELF randomization, when executing * a loader directly (i.e. no interpreter listed in ELF -- 2.25.1

2 1

[PATCH OLK-6.6] drm/bridge: tc358767: Check if fully initialized before signalling HPD event via IRQ
by liwei 09 Oct '24

09 Oct '24

From: Marek Vasut <marex(a)denx.de> mainline inclusion from mainline-v6.11-rc1 commit 162e48cb1d84c2c966b649b8ac5c9d4f75f6d44f category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAUAT8 CVE: CVE-2024-46810 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Make sure the connector is fully initialized before signalling any HPD events via drm_kms_helper_hotplug_event(), otherwise this may lead to NULL pointer dereference. Signed-off-by: Marek Vasut <marex(a)denx.de> Reviewed-by: Robert Foss <rfoss(a)kernel.org> Signed-off-by: Robert Foss <rfoss(a)kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240531203333.277476-1-marex… Signed-off-by: liwei <liwei728(a)huawei.com> --- drivers/gpu/drm/bridge/tc358767.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index d941c3a0e611..7fd4a5fe03ed 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -2034,7 +2034,7 @@ static irqreturn_t tc_irq_handler(int irq, void *arg) dev_err(tc->dev, "syserr %x\n", stat); } - if (tc->hpd_pin >= 0 && tc->bridge.dev) { + if (tc->hpd_pin >= 0 && tc->bridge.dev && tc->aux.drm_dev) { /* * H is triggered when the GPIO goes high. * -- 2.25.1

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[PATCH OLK-5.10] blk-mq: fix lockdep hardirq warning in __blk_mq_tag_idle()
by Yu Kuai 09 Oct '24

09 Oct '24

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAVONP CVE: NA -------------------------------- commit c6f9c0e2d53d ("blk-mq: allow hardware queue to get more tag while sharing a tag set") started to call blk_mq_tag_idle() from hardirq context. And later commit 1b6433f06bda ("blk-mq: fix potential io hang by wrong 'wake_batch'") add spin_unlock_irq() in blk_mq_tag_idle(), which may enable interrupt in hardirq context, and may trigger AA deadlock. Fixes: 1b6433f06bda ("blk-mq: fix potential io hang by wrong 'wake_batch'") Signed-off-by: Yu Kuai <yukuai3(a)huawei.com> --- block/blk-mq-tag.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c index 73c046bc3d90..dd4f9bdcb8c2 100644 --- a/block/blk-mq-tag.c +++ b/block/blk-mq-tag.c @@ -85,6 +85,7 @@ void __blk_mq_tag_idle(struct blk_mq_hw_ctx *hctx) { struct blk_mq_tags *tags = hctx->tags; unsigned int users; + unsigned long flags; if (blk_mq_is_sbitmap_shared(hctx->flags)) { struct request_queue *q = hctx->queue; @@ -97,10 +98,10 @@ void __blk_mq_tag_idle(struct blk_mq_hw_ctx *hctx) return; } - spin_lock_irq(&tags->lock); + spin_lock_irqsave(&tags->lock, flags); users = atomic_dec_return(&tags->active_queues); blk_mq_update_wake_batch(tags, users); - spin_unlock_irq(&tags->lock); + spin_unlock_irqrestore(&tags->lock, flags); blk_mq_tag_wakeup_all(tags, false); } -- 2.39.2

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[PATCH OLK-6.6] drm/amd/display: Check index for aux_rd_interval before using
by Qi Xi 09 Oct '24

09 Oct '24

From: Alex Hung <alex.hung(a)amd.com> mainline inclusion from mainline-v6.11-rc1 commit 9ba2ea6337b4f159aecb177555a6a81da92d302e category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IARV7O CVE: CVE-2024-46728 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- aux_rd_interval has size of 7 and should be checked. This fixes 3 OVERRUN and 1 INTEGER_OVERFLOW issues reported by Coverity. Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira(a)amd.com> Acked-by: Tom Chung <chiahsuan.chung(a)amd.com> Signed-off-by: Alex Hung <alex.hung(a)amd.com> Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Qi Xi <xiqi2(a)huawei.com> --- .../gpu/drm/amd/display/dc/link/protocols/link_dp_training.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c index 16a62e018712..9d1adfc09fb2 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c @@ -914,10 +914,10 @@ static enum dc_status configure_lttpr_mode_non_transparent( /* Driver does not need to train the first hop. Skip DPCD read and clear * AUX_RD_INTERVAL for DPTX-to-DPIA hop. */ - if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) + if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA && repeater_cnt > 0 && repeater_cnt < MAX_REPEATER_CNT) link->dpcd_caps.lttpr_caps.aux_rd_interval[--repeater_cnt] = 0; - for (repeater_id = repeater_cnt; repeater_id > 0; repeater_id--) { + for (repeater_id = repeater_cnt; repeater_id > 0 && repeater_id < MAX_REPEATER_CNT; repeater_id--) { aux_interval_address = DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1 + ((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (repeater_id - 1)); core_link_read_dpcd( -- 2.25.1

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[PATCH OLK-5.10] kprobes: Fix deadlock issue with kmemleak
by Zheng Yejian 09 Oct '24

09 Oct '24

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I9K8D1 ----------------------------------------- There is following deadlock issue: CPU0 CPU1 ==== ==== kretprobe_trampoline kmem_cache_alloc trampoline_handler kmemleak_alloc __kretprobe_trampoline_handler create_object kretprobe_hash_lock <-- hold kmemleak lock <-- hold kretprobe table lock __link_object recycle_rp_inst stack_trace_save kfree_rcu kvfree_call_rcu ... kmemleak_ignore unwind_next_frame kretprobe_find_ret_addr <-- wait for kmemleak lock kretprobe_hash_lock <-- wait for kretprobe table lock One task on CPU0 hold kretprobe_hash_lock and wait for kmemleak_lock, however, kmemleak_lock was held by other task on CPU1 and that task is waiting for kretprobe_hash_lock, then deadlock happended. To fix it, move kfree_rcu() out of kretprobe table lock area. Fixes: 88fef946364b ("kprobes: Add kretprobe_find_ret_addr() for searching return address") Signed-off-by: Zheng Yejian <zhengyejian1(a)huawei.com> --- kernel/kprobes.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/kernel/kprobes.c b/kernel/kprobes.c index dacb71214fa1..5d64d97975ba 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -1223,7 +1223,7 @@ void kprobes_inc_nmissed_count(struct kprobe *p) } NOKPROBE_SYMBOL(kprobes_inc_nmissed_count); -static void recycle_rp_inst(struct kretprobe_instance *ri) +static void recycle_rp_inst(struct kretprobe_instance *ri, struct hlist_head *head) { struct kretprobe *rp = ri->rp; @@ -1235,7 +1235,7 @@ static void recycle_rp_inst(struct kretprobe_instance *ri) hlist_add_head(&ri->hlist, &rp->free_instances); raw_spin_unlock(&rp->lock); } else - kfree_rcu(ri, rcu); + hlist_add_head(&ri->hlist, head); } NOKPROBE_SYMBOL(recycle_rp_inst); @@ -1326,6 +1326,7 @@ void kprobe_flush_task(struct task_struct *tk) struct hlist_head *head; struct hlist_node *tmp; unsigned long hash, flags = 0; + HLIST_HEAD(empty_rp); if (unlikely(!kprobes_initialized)) /* Early boot. kretprobe_table_locks not yet initialized. */ @@ -1338,10 +1339,16 @@ void kprobe_flush_task(struct task_struct *tk) kretprobe_table_lock(hash, &flags); hlist_for_each_entry_safe(ri, tmp, head, hlist) { if (ri->task == tk) - recycle_rp_inst(ri); + recycle_rp_inst(ri, &empty_rp); } kretprobe_table_unlock(hash, &flags); + hlist_for_each_entry_safe(ri, tmp, &empty_rp, hlist) { + hlist_del(&ri->hlist); + INIT_HLIST_NODE(&ri->hlist); + kfree_rcu(ri, rcu); + } + kprobe_busy_end(); } NOKPROBE_SYMBOL(kprobe_flush_task); @@ -2014,6 +2021,7 @@ unsigned long __kretprobe_trampoline_handler(struct pt_regs *regs, unsigned long flags; kprobe_opcode_t *correct_ret_addr = NULL; bool skipped = false; + HLIST_HEAD(empty_rp); kretprobe_hash_lock(current, &head, &flags); @@ -2082,7 +2090,7 @@ unsigned long __kretprobe_trampoline_handler(struct pt_regs *regs, __this_cpu_write(current_kprobe, prev); } - recycle_rp_inst(ri); + recycle_rp_inst(ri, &empty_rp); if (ri == last) break; @@ -2090,6 +2098,12 @@ unsigned long __kretprobe_trampoline_handler(struct pt_regs *regs, kretprobe_hash_unlock(current, &flags); + hlist_for_each_entry_safe(ri, tmp, &empty_rp, hlist) { + hlist_del(&ri->hlist); + INIT_HLIST_NODE(&ri->hlist); + kfree_rcu(ri, rcu); + } + return (unsigned long)correct_ret_addr; } NOKPROBE_SYMBOL(__kretprobe_trampoline_handler) -- 2.25.1

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