Re: [linux-next:master] BUILD REGRESSION 6dc544b66971c7f9909ff038b62149105272d26a
On Wed, May 29, 2024 at 02:19:47AM +0800, kernel test robot wrote: > tree/branch: > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > branch HEAD: 6dc544b66971c7f9909ff038b62149105272d26a Add linux-next > specific files for 20240528 > > Error/Warning reports: > > https://lore.kernel.org/oe-kbuild-all/202405282036.maedo54q-...@intel.com > https://lore.kernel.org/oe-kbuild-all/202405282148.jaf0flhu-...@intel.com > https://lore.kernel.org/oe-kbuild-all/202405282308.uezt6hqc-...@intel.com > > Error/Warning: (recently discovered and may have been fixed) > > drivers/dma-buf/udmabuf.c:45:(.text+0x140): undefined reference to > `vmf_insert_pfn' > fs/btrfs/fiemap.c:822:26: warning: 'last_extent_end' may be used > uninitialized [-Wmaybe-uninitialized] The report says it's gcc 13.2, that one I use (and expect others as well as it's a recent one) and we also have -Wmaybe-uninitialized enabled in fs/btrfs/ to catch such warnings. Yet this is reported on mips64, is there something special about that compiler+architecture? The warning is IMO a false positive, the maybe-uninitialized variable is passed as pointer but initialized on success and never used on failure. We can safely silence the warning by initializing the variable to 0 but this may be pointing to a problem with mips64+gcc namely because other compiler+host combinations do not warn abou that.
Re: [linux-next:master] BUILD REGRESSION 6dc544b66971c7f9909ff038b62149105272d26a
On Wed, 29 May 2024 02:19:47 +0800 kernel test robot wrote: > | `-- > net-ipv6-route.c-rt6_fill_node()-error:we-previously-assumed-dst-could-be-null-(see-line-) Is there a way for us to mark this as false positive?
[linux-next:master] BUILD REGRESSION 6dc544b66971c7f9909ff038b62149105272d26a
tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master branch HEAD: 6dc544b66971c7f9909ff038b62149105272d26a Add linux-next specific files for 20240528 Error/Warning reports: https://lore.kernel.org/oe-kbuild-all/202405282036.maedo54q-...@intel.com https://lore.kernel.org/oe-kbuild-all/202405282148.jaf0flhu-...@intel.com https://lore.kernel.org/oe-kbuild-all/202405282308.uezt6hqc-...@intel.com Error/Warning: (recently discovered and may have been fixed) drivers/dma-buf/udmabuf.c:45:(.text+0x140): undefined reference to `vmf_insert_pfn' fs/btrfs/fiemap.c:822:26: warning: 'last_extent_end' may be used uninitialized [-Wmaybe-uninitialized] Error/Warning ids grouped by kconfigs: gcc_recent_errors |-- alpha-allyesconfig | |-- drivers-gpu-drm-imx-ipuv3-imx-ldb.c:error:_sel-directive-output-may-be-truncated-writing-bytes-into-a-region-of-size-between-and | |-- drivers-gpu-drm-nouveau-nouveau_backlight.c:error:d-directive-output-may-be-truncated-writing-between-and-bytes-into-a-region-of-size | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- arc-allmodconfig | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- arc-allyesconfig | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- arm-allmodconfig | |-- drivers-gpu-drm-imx-ipuv3-imx-ldb.c:error:_sel-directive-output-may-be-truncated-writing-bytes-into-a-region-of-size-between-and | |-- drivers-gpu-drm-nouveau-nouveau_backlight.c:error:d-directive-output-may-be-truncated-writing-between-and-bytes-into-a-region-of-size | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- arm-allyesconfig | |-- drivers-gpu-drm-imx-ipuv3-imx-ldb.c:error:_sel-directive-output-may-be-truncated-writing-bytes-into-a-region-of-size-between-and | |-- drivers-gpu-drm-nouveau-nouveau_backlight.c:error:d-directive-output-may-be-truncated-writing-between-and-bytes-into-a-region-of-size | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- arm-randconfig-001-20240528 | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- arm-randconfig-002-20240528 | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- arm64-randconfig-003-20240528 | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- csky-allmodconfig | |-- drivers-gpu-drm-imx-ipuv3-imx-ldb.c:error:_sel-directive-output-may-be-truncated-writing-bytes-into-a-region-of-size-between-and | |-- drivers-gpu-drm-nouveau-nouveau_backlight.c:error:d-directive-output-may-be-truncated-writing-between-and-bytes-into-a-region-of-size | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- csky-allyesconfig | |-- drivers-gpu-drm-imx-ipuv3-imx-ldb.c:error:_sel-directive-output-may-be-truncated-writing-bytes-into-a-region-of-size-between-and | |-- drivers-gpu-drm-nouveau-nouveau_backlight.c:error:d-directive-output-may-be-truncated-writing-between-and-bytes-into-a-region-of-size | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- csky-randconfig-001-20240528 | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- csky-randconfig-002-20240528 | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- i386-allmodconfig | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- i386-allyesconfig | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- i386-buildonly-randconfig-001-20240528 | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- i386-randconfig-003-20240528 | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- i386-randconfig-004-20240528 | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- i386-randconfig-005-20240528 | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- i386-randconfig-006-20240528 | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- i386-randconfig-015-20240528 | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- i386-randconfig-016-20240528 | `-- drivers-regulator-rtq2208-regulator.c:warning:rtq2208_regulator_ldo_ops-defined-but-not-used |-- loongarch-allmodconfig | |-- drivers-gpu-drm-imx-ipuv3-imx-ldb.c:error:_sel-directive-output-may-be
