# 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 48 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powernv_defconfig+NO_RADIX_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- powernv_defconfig # Added to kconfig CONFIG_PPC_RADIX_MMU=n # yes \n | make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powernv_defconfig+NO_RADIX_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 48 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powernv_defconfig+NO_RADIX_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/arch/powerpc/mm/book3s64/pgtable.c: In function 'flush_partition': /kisskb/src/arch/powerpc/mm/book3s64/pgtable.c:216:3: error: implicit declaration of function 'radix__flush_all_lpid_guest'; did you mean 'radix__flush_all_lpid'? [-Werror=implicit-function-declaration] radix__flush_all_lpid_guest(lpid); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ radix__flush_all_lpid cc1: all warnings being treated as errors make[4]: *** [/kisskb/src/scripts/Makefile.build:274: arch/powerpc/mm/book3s64/pgtable.o] Error 1 make[4]: *** Waiting for unfinished jobs.... make[3]: *** [/kisskb/src/scripts/Makefile.build:490: arch/powerpc/mm/book3s64] Error 2 make[3]: *** Waiting for unfinished jobs.... make[2]: *** [/kisskb/src/scripts/Makefile.build:490: arch/powerpc/mm] Error 2 make[2]: *** Waiting for unfinished jobs.... make[1]: *** [/kisskb/src/Makefile:1079: arch/powerpc] Error 2 make[1]: *** Waiting for unfinished jobs.... /kisskb/src/drivers/scsi/cxlflash/main.c: In function 'send_afu_cmd': /kisskb/src/drivers/scsi/cxlflash/main.c:2347:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if (rc) { ^ /kisskb/src/drivers/scsi/cxlflash/main.c:2357:2: note: here case -EAGAIN: ^~~~ /kisskb/src/drivers/scsi/cxlflash/main.c: In function 'term_intr': /kisskb/src/drivers/scsi/cxlflash/main.c:754:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if (index == PRIMARY_HWQ) ^ /kisskb/src/drivers/scsi/cxlflash/main.c:756:2: note: here case UNMAP_TWO: ^~~~ /kisskb/src/drivers/scsi/cxlflash/main.c:757:3: warning: this statement may fall through [-Wimplicit-fallthrough=] cfg->ops->unmap_afu_irq(hwq->ctx_cookie, 2, hwq); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/drivers/scsi/cxlflash/main.c:758:2: note: here case UNMAP_ONE: ^~~~ /kisskb/src/drivers/scsi/cxlflash/main.c:759:3: warning: this statement may fall through [-Wimplicit-fallthrough=] cfg->ops->unmap_afu_irq(hwq->ctx_cookie, 1, hwq); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/drivers/scsi/cxlflash/main.c:760:2: note: here case FREE_IRQ: ^~~~ /kisskb/src/drivers/scsi/cxlflash/main.c: In function 'cxlflash_remove': /kisskb/src/drivers/scsi/cxlflash/main.c:975:3: warning: this statement may fall through [-Wimplicit-fallthrough=] cxlflash_release_chrdev(cfg); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/drivers/scsi/cxlflash/main.c:976:2: note: here case INIT_STATE_SCSI: ^~~~ /kisskb/src/drivers/scsi/cxlflash/main.c:978:3: warning: this statement may fall through [-Wimplicit-fallthrough=] scsi_remove_host(cfg->host); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/drivers/scsi/cxlflash/main.c:979:2: note: here case INIT_STATE_AFU: ^~~~ /kisskb/src/drivers/scsi/cxlflash/main.c:980:3: warning: this statement may fall through [-Wimplicit-fallthrough=] term_afu(cfg); ^~~~~~~~~~~~~ /kisskb/src/drivers/scsi/cxlflash/main.c:981:2: note: here case INIT_STATE_PCI: ^~~~ /kisskb/src/drivers/scsi/cxlflash/main.c:983:3: warning: this statement may fall through [-Wimplicit-fallthrough=] pci_disable_device(pdev); ^~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/drivers/scsi/cxlflash/main.c:984:2: note: here case INIT_STATE_NONE: ^~~~ /kisskb/src/drivers/scsi/cxlflash/main.c: In function 'num_hwqs_store': /kisskb/src/drivers/scsi/cxlflash/main.c:3018:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if (cfg->state == STATE_NORMAL) ^ /kisskb/src/drivers/scsi/cxlflash/main.c:3020:2: note: here default: ^~~~~~~ make: *** [Makefile:179: sub-make] Error 2 Command 'make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powernv_defconfig+NO_RADIX_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_powernv_defconfig+NO_RADIX_powerpc-gcc8 # Build took: 0:03:08.658653