# git rev-parse -q --verify 7c1bb6bbf75d8ca5ec878627d3170effcaf54f27^{commit} 7c1bb6bbf75d8ca5ec878627d3170effcaf54f27 already have revision, skipping fetch # git checkout -q -f -B kisskb 7c1bb6bbf75d8ca5ec878627d3170effcaf54f27 # git clean -qxdf # < git log -1 # commit 7c1bb6bbf75d8ca5ec878627d3170effcaf54f27 # Author: Naveen N. Rao # Date: Thu Sep 5 23:50:30 2019 +0530 # # powerpc: Use ftrace_graph_ret_addr() when unwinding # # With support for HAVE_FUNCTION_GRAPH_RET_ADDR_PTR, # ftrace_graph_ret_addr() provides more robust unwinding when function # graph is in use. Update show_stack() to use the same. # # With dump_stack() added to sysrq_sysctl_handler(), before this patch: # root@(none):/sys/kernel/debug/tracing# cat /proc/sys/kernel/sysrq # CPU: 0 PID: 218 Comm: cat Not tainted 5.3.0-rc7-00868-g8453ad4a078c-dirty #20 # Call Trace: # [c0000000d1e13c30] [c00000000006ab98] return_to_handler+0x0/0x40 (dump_stack+0xe8/0x164) (unreliable) # [c0000000d1e13c80] [c000000000145680] sysrq_sysctl_handler+0x48/0xb8 # [c0000000d1e13cd0] [c00000000006ab98] return_to_handler+0x0/0x40 (proc_sys_call_handler+0x274/0x2a0) # [c0000000d1e13d60] [c00000000006ab98] return_to_handler+0x0/0x40 (return_to_handler+0x0/0x40) # [c0000000d1e13d80] [c00000000006ab98] return_to_handler+0x0/0x40 (__vfs_read+0x3c/0x70) # [c0000000d1e13dd0] [c00000000006ab98] return_to_handler+0x0/0x40 (vfs_read+0xb8/0x1b0) # [c0000000d1e13e20] [c00000000006ab98] return_to_handler+0x0/0x40 (ksys_read+0x7c/0x140) # # After this patch: # Call Trace: # [c0000000d1e33c30] [c00000000006ab58] return_to_handler+0x0/0x40 (dump_stack+0xe8/0x164) (unreliable) # [c0000000d1e33c80] [c000000000145680] sysrq_sysctl_handler+0x48/0xb8 # [c0000000d1e33cd0] [c00000000006ab58] return_to_handler+0x0/0x40 (proc_sys_call_handler+0x274/0x2a0) # [c0000000d1e33d60] [c00000000006ab58] return_to_handler+0x0/0x40 (__vfs_read+0x3c/0x70) # [c0000000d1e33d80] [c00000000006ab58] return_to_handler+0x0/0x40 (vfs_read+0xb8/0x1b0) # [c0000000d1e33dd0] [c00000000006ab58] return_to_handler+0x0/0x40 (ksys_read+0x7c/0x140) # [c0000000d1e33e20] [c00000000006ab58] return_to_handler+0x0/0x40 (system_call+0x5c/0x68) # # Signed-off-by: Naveen N. Rao # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/dc89c9a887121342d9c7819482c3dabdece2a323.1567707399.git.naveen.n.rao@linux.vnet.ibm.com # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 7c1bb6bbf75d8ca5ec878627d3170effcaf54f27 # < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- randconfig KCONFIG_SEED=0xC43BDED8 # 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 # yes \n | make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- oldconfig yes: standard output: Broken pipe # make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/mm/hmm.c: In function 'hmm_vma_walk_pud': /kisskb/src/mm/hmm.c:753:9: error: implicit declaration of function 'pud_pfn'; did you mean 'pte_pfn'? [-Werror=implicit-function-declaration] pfn = pud_pfn(pud) + ((addr & ~PUD_MASK) >> PAGE_SHIFT); ^~~~~~~ pte_pfn /kisskb/src/drivers/crypto/talitos.c: In function 'talitos_remove': /kisskb/src/drivers/crypto/talitos.c:3142:4: warning: this statement may fall through [-Wimplicit-fallthrough=] crypto_unregister_aead(&t_alg->algt.alg.aead); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/drivers/crypto/talitos.c:3143:3: note: here case CRYPTO_ALG_TYPE_AHASH: ^~~~ cc1: some warnings being treated as errors make[2]: *** [/kisskb/src/scripts/Makefile.build:273: mm/hmm.o] Error 1 make[2]: *** Waiting for unfinished jobs.... make[1]: *** [/kisskb/src/Makefile:1079: mm] Error 2 make[1]: *** Waiting for unfinished jobs.... In file included from /kisskb/src/include/linux/acpi.h:15, from /kisskb/src/include/linux/i2c.h:13, from /kisskb/src/include/uapi/linux/fb.h:6, from /kisskb/src/include/linux/fb.h:6, from /kisskb/src/drivers/video/fbdev/fsl-diu-fb.c:20: /kisskb/src/drivers/video/fbdev/fsl-diu-fb.c: In function 'fsl_diu_ioctl': /kisskb/src/include/linux/device.h:1501:2: warning: this statement may fall through [-Wimplicit-fallthrough=] _dev_warn(dev, dev_fmt(fmt), ##__VA_ARGS__) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/drivers/video/fbdev/fsl-diu-fb.c:1287:3: note: in expansion of macro 'dev_warn' dev_warn(info->dev, ^~~~~~~~ /kisskb/src/drivers/video/fbdev/fsl-diu-fb.c:1290:2: note: here case MFB_SET_PIXFMT: ^~~~ In file included from /kisskb/src/include/linux/acpi.h:15, from /kisskb/src/include/linux/i2c.h:13, from /kisskb/src/include/uapi/linux/fb.h:6, from /kisskb/src/include/linux/fb.h:6, from /kisskb/src/drivers/video/fbdev/fsl-diu-fb.c:20: /kisskb/src/include/linux/device.h:1501:2: warning: this statement may fall through [-Wimplicit-fallthrough=] _dev_warn(dev, dev_fmt(fmt), ##__VA_ARGS__) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/drivers/video/fbdev/fsl-diu-fb.c:1296:3: note: in expansion of macro 'dev_warn' dev_warn(info->dev, ^~~~~~~~ /kisskb/src/drivers/video/fbdev/fsl-diu-fb.c:1299:2: note: here case MFB_GET_PIXFMT: ^~~~ /kisskb/src/drivers/mfd/rk808.c:752:12: warning: 'rk8xx_resume' defined but not used [-Wunused-function] static int rk8xx_resume(struct device *dev) ^~~~~~~~~~~~ /kisskb/src/drivers/mfd/rk808.c:732:12: warning: 'rk8xx_suspend' defined but not used [-Wunused-function] static int rk8xx_suspend(struct device *dev) ^~~~~~~~~~~~~ make: *** [Makefile:179: sub-make] Error 2 Command 'make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc8 # Build took: 0:01:01.508994