# 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 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_smp_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_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/include/linux/kernel.h:11:0, from /kisskb/src/include/linux/list.h:9, from /kisskb/src/include/linux/module.h:9, from /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:15: /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd': /kisskb/src/include/linux/err.h:22:49: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) ^ /kisskb/src/include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: note: in expansion of macro 'IS_ERR_VALUE' if (IS_ERR_VALUE(fep->ring_mem_addr)) ^ /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8541cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8555cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcbbbbc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xcab388) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:12 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283495 Bytes = 6136.23 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:12 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283865 Bytes = 6136.59 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:11 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6253246 Bytes = 6106.69 KiB = 5.96 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:13 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283169 Bytes = 6135.91 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:13 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283669 Bytes = 6136.40 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d00314 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:13 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283391 Bytes = 6136.12 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d00314 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:13 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283490 Bytes = 6136.22 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:13 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6284339 Bytes = 6137.05 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:13 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283376 Bytes = 6136.11 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:13 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283402 Bytes = 6136.13 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d00314 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283254 Bytes = 6135.99 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283242 Bytes = 6135.98 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6284262 Bytes = 6136.97 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283846 Bytes = 6136.57 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283253 Bytes = 6135.99 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d00314 Image Name: Linux-5.3.0-rc2-g7c1bb6bbf75d Created: Thu Sep 19 00:48:14 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6283251 Bytes = 6135.99 KiB = 5.99 MiB Load Address: 00d00000 Entry Point: 00d00314 Completed OK # rm -rf /kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc5 # Build took: 0:01:59.319422