# 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-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-5.5.0-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_ppc6xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ppc6xx_defconfig # make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- In file included from /kisskb/src/sound/ppc/pmac.h:12:0, from /kisskb/src/sound/ppc/awacs.c:16: /kisskb/src/sound/ppc/awacs.c: In function 'snd_pmac_awacs_init': /kisskb/src/include/sound/control.h:208:9: warning: 'speaker_vol' may be used uninitialized in this function [-Wmaybe-uninitialized] return _snd_ctl_add_slave(master, slave, 0); ^ /kisskb/src/sound/ppc/awacs.c:873:36: note: 'speaker_vol' was declared here struct snd_kcontrol *master_vol, *speaker_vol; ^ INFO: Uncompressed kernel (size 0xa87c9c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa87c9c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa87c9c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa87c9c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa87c9c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa87c9c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa87c9c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa87c9c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa87c9c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa87c9c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa77584) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa77584) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) Image Name: Linux-5.3.0-rc2+ Created: Thu Sep 19 00:42:53 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5044164 Bytes = 4925.94 KiB = 4.81 MiB Load Address: 00b00000 Entry Point: 00b00294 Image Name: Linux-5.3.0-rc2+ Created: Thu Sep 19 00:42:53 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5044181 Bytes = 4925.96 KiB = 4.81 MiB Load Address: 00b00000 Entry Point: 00b00894 Image Name: Linux-5.3.0-rc2+ Created: Thu Sep 19 00:42:53 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5044612 Bytes = 4926.38 KiB = 4.81 MiB Load Address: 00b00000 Entry Point: 00b00894 Image Name: Linux-5.3.0-rc2+ Created: Thu Sep 19 00:42:53 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5042782 Bytes = 4924.59 KiB = 4.81 MiB Load Address: 00b00000 Entry Point: 00b00294 Image Name: Linux-5.3.0-rc2+ Created: Thu Sep 19 00:42:53 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5043094 Bytes = 4924.90 KiB = 4.81 MiB Load Address: 00b00000 Entry Point: 00b00294 Image Name: Linux-5.3.0-rc2+ Created: Thu Sep 19 00:42:53 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5042880 Bytes = 4924.69 KiB = 4.81 MiB Load Address: 00b00000 Entry Point: 00b00294 Image Name: Linux-5.3.0-rc2+ Created: Thu Sep 19 00:42:53 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5042453 Bytes = 4924.27 KiB = 4.81 MiB Load Address: 00b00000 Entry Point: 00b00294 Image Name: Linux-5.3.0-rc2+ Created: Thu Sep 19 00:42:53 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5043097 Bytes = 4924.90 KiB = 4.81 MiB Load Address: 00b00000 Entry Point: 00b00294 Image Name: Linux-5.3.0-rc2+ Created: Thu Sep 19 00:42:53 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5012866 Bytes = 4895.38 KiB = 4.78 MiB Load Address: 00000000 Entry Point: 00000000 Completed OK # rm -rf /kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc5 # Build took: 0:01:56.472125