# git rev-parse -q --verify 94f0b2d4a1d0c52035aef425da5e022bd2cb1c71^{commit} 94f0b2d4a1d0c52035aef425da5e022bd2cb1c71 already have revision, skipping fetch # git checkout -q -f -B kisskb 94f0b2d4a1d0c52035aef425da5e022bd2cb1c71 # git clean -qxdf # < git log -1 # commit 94f0b2d4a1d0c52035aef425da5e022bd2cb1c71 # Author: Linus Torvalds # Date: Tue Jun 15 09:26:19 2021 -0700 # # proc: only require mm_struct for writing # # Commit 591a22c14d3f ("proc: Track /proc/$pid/attr/ opener mm_struct") we # started using __mem_open() to track the mm_struct at open-time, so that # we could then check it for writes. # # But that also ended up making the permission checks at open time much # stricter - and not just for writes, but for reads too. And that in turn # caused a regression for at least Fedora 29, where NIC interfaces fail to # start when using NetworkManager. # # Since only the write side wanted the mm_struct test, ignore any failures # by __mem_open() at open time, leaving reads unaffected. The write() # time verification of the mm_struct pointer will then catch the failure # case because a NULL pointer will not match a valid 'current->mm'. # # Link: https://lore.kernel.org/netdev/YMjTlp2FSJYvoyFa@unreal/ # Fixes: 591a22c14d3f ("proc: Track /proc/$pid/attr/ opener mm_struct") # Reported-and-tested-by: Leon Romanovsky # Cc: Kees Cook # Cc: Christian Brauner # Cc: Andrea Righi # Signed-off-by: Linus Torvalds # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 94f0b2d4a1d0c52035aef425da5e022bd2cb1c71 # < make -s -j 120 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- randconfig # Added to kconfig CONFIG_STANDALONE=y # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # Added to kconfig CONFIG_CPU_BIG_ENDIAN=y # Added to kconfig CONFIG_PPC64=y # Added to kconfig CONFIG_PPC_DISABLE_WERROR=y # Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=y # Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y # Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n # Added to kconfig CONFIG_GCC_PLUGINS=n # Added to kconfig CONFIG_LD_HEAD_STUB_CATCH=y # Added to kconfig CONFIG_TRIM_UNUSED_KSYMS=n # Added to kconfig CONFIG_UBSAN=n # < make -s -j 120 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 120 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig .config:6150:warning: override: reassigning to symbol PPC_DISABLE_WERROR .config:6152:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD .config:6157:warning: override: reassigning to symbol UBSAN # make -s -j 120 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/fs/afs/dir.c: In function 'afs_dir_set_page_dirty': /kisskb/src/fs/afs/dir.c:51:1: error: no return statement in function returning non-void [-Werror=return-type] } ^ cc1: some warnings being treated as errors make[3]: *** [/kisskb/src/scripts/Makefile.build:272: fs/afs/dir.o] Error 1 make[3]: *** Waiting for unfinished jobs.... make[2]: *** [/kisskb/src/scripts/Makefile.build:515: fs/afs] Error 2 make[2]: *** Waiting for unfinished jobs.... /kisskb/src/net/sched/sch_frag.c: In function 'sch_fragment': /kisskb/src/net/sched/sch_frag.c:93:10: warning: missing braces around initializer [-Wmissing-braces] struct rtable sch_frag_rt = { 0 }; ^ /kisskb/src/net/sched/sch_frag.c:93:10: warning: (near initialization for 'sch_frag_rt.dst') [-Wmissing-braces] make[1]: *** [/kisskb/src/Makefile:1844: fs] Error 2 make[1]: *** Waiting for unfinished jobs.... /kisskb/src/drivers/clk/xilinx/xlnx_vcu.c: In function 'xvcu_register_clock_provider': /kisskb/src/drivers/clk/xilinx/xlnx_vcu.c:524:9: warning: missing braces around initializer [-Wmissing-braces] struct clk_parent_data parent_data[2] = { 0 }; ^ /kisskb/src/drivers/clk/xilinx/xlnx_vcu.c:524:9: warning: (near initialization for 'parent_data[0]') [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c: In function 'amdgpu_gfx_ras_late_init': /kisskb/src/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c:610:9: warning: missing braces around initializer [-Wmissing-braces] struct ras_query_if info = { 0 }; ^ /kisskb/src/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c:610:9: warning: (near initialization for 'info.head') [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c: In function 'amdgpu_dm_psr_enable': /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:10583:9: warning: missing braces around initializer [-Wmissing-braces] struct dc_static_screen_params params = {0}; ^ /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:10583:9: warning: (near initialization for 'params.triggers') [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/bios/bios_parser2.c: In function 'bios_parser_get_i2c_info': /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/bios/bios_parser2.c:297:9: warning: missing braces around initializer [-Wmissing-braces] struct atom_i2c_record dummy_record = {0}; ^ /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/bios/bios_parser2.c:297:9: warning: (near initialization for 'dummy_record.record_header') [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dcn_calcs.c: In function 'dcn_bw_apply_registry_override': /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dcn_calcs.c:638:2: error: implicit declaration of function 'enable_kernel_altivec' [-Werror=implicit-function-declaration] DC_FP_START(); ^ /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dcn_calcs.c:674:2: error: implicit declaration of function 'disable_kernel_altivec' [-Werror=implicit-function-declaration] DC_FP_END(); ^ /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr.c: In function 'rn_clk_mgr_construct': /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr.c:938:9: warning: missing braces around initializer [-Wmissing-braces] struct dpm_clocks clock_table = { 0 }; ^ /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr.c:938:9: warning: (near initialization for 'clock_table.DcfClocks') [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn301/vg_clk_mgr.c: In function 'vg_update_clocks': /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn301/vg_clk_mgr.c:118:11: warning: missing braces around initializer [-Wmissing-braces] union display_idle_optimization_u idle_info = { 0 }; ^ /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn301/vg_clk_mgr.c:118:11: warning: (near initialization for 'idle_info.idle_info') [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn301/vg_clk_mgr.c:131:10: warning: missing braces around initializer [-Wmissing-braces] union display_idle_optimization_u idle_info = { 0 }; ^ /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn301/vg_clk_mgr.c:131:10: warning: (near initialization for 'idle_info.idle_info') [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn301/vg_clk_mgr.c: At top level: /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn301/vg_clk_mgr.c:707:15: warning: missing braces around initializer [-Wmissing-braces] static struct watermarks dummy_wms = { 0 }; ^ /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn301/vg_clk_mgr.c:707:15: warning: (near initialization for 'dummy_wms.WatermarkRow') [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn301/dcn301_smu.c: In function 'dcn301_smu_enable_phy_refclk_pwrdwn': /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn301/dcn301_smu.c:213:8: warning: missing braces around initializer [-Wmissing-braces] union display_idle_optimization_u idle_info = { 0 }; ^ /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn301/dcn301_smu.c:213:8: warning: (near initialization for 'idle_info.idle_info') [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn30/dcn30_clk_mgr.c: In function 'dcn3_init_clocks': /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn30/dcn30_clk_mgr.c:214:2: error: implicit declaration of function 'enable_kernel_altivec' [-Werror=implicit-function-declaration] DC_FP_START(); ^ /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn30/dcn30_clk_mgr.c:216:2: error: implicit declaration of function 'disable_kernel_altivec' [-Werror=implicit-function-declaration] DC_FP_END(); ^ cc1: some warnings being treated as errors make[5]: *** [/kisskb/src/scripts/Makefile.build:272: drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dcn_calcs.o] Error 1 make[5]: *** Waiting for unfinished jobs.... cc1: some warnings being treated as errors make[5]: *** [/kisskb/src/scripts/Makefile.build:272: drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn30/dcn30_clk_mgr.o] Error 1 make[4]: *** [/kisskb/src/scripts/Makefile.build:515: drivers/gpu/drm/amd/amdgpu] Error 2 make[3]: *** [/kisskb/src/scripts/Makefile.build:515: drivers/gpu/drm] Error 2 make[2]: *** [/kisskb/src/scripts/Makefile.build:515: drivers/gpu] Error 2 make[1]: *** [/kisskb/src/Makefile:1844: drivers] Error 2 make: *** [Makefile:215: __sub-make] Error 2 Command 'make -s -j 120 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.9 # Build took: 0:02:54.111052