Hi AKASHI, [auto build test ERROR on v4.3-rc4 -- if it's inappropriate base, please ignore]
config: arm64-allmodconfig (attached as .config)
reproduce:
wget
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
-O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64
Note: the
linux-review/AKASHI-Takahiro/arm64-ftrace-fix-incorrect-output-from-stack-tracer
HEAD f6c03913c640aa1d196348c49f15cfdc264393e0 builds fine.
It only hurts bisectibility.
All errors (new ones prefixed by >>):
arch/arm64/kernel/stacktrace.c: In function 'save_trace':
>> arch/arm64/kernel/stacktrace.c:93:29: error: 'return_to_handler' undeclared
>> (first use in this function)
if (addr == (unsigned long)return_to_handler - AARCH64_INSN_SIZE) {
^
arch/arm64/kernel/stacktrace.c:93:29: note: each undeclared identifier is
reported only once for each function it appears in
>> arch/arm64/kernel/stacktrace.c:101:4: error: invalid use of undefined type
>> 'struct ftrace_ret_stack'
current->ret_stack[data->ret_stack_index--].ret
^
>> arch/arm64/kernel/stacktrace.c:101:22: error: dereferencing pointer to
>> incomplete type
current->ret_stack[data->ret_stack_index--].ret
^
vim +/return_to_handler +93 arch/arm64/kernel/stacktrace.c
87 {
88 struct stack_trace_data *data = d;
89 struct stack_trace *trace = data->trace;
90 unsigned long addr = frame->pc;
91
92 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
> 93 if (addr == (unsigned long)return_to_handler -
AARCH64_INSN_SIZE) {
94 /*
95 * This is a case where function graph tracer has
96 * modified a return address (LR) in a stack frame
97 * to hook a function return.
98 * So replace it to an original value.
99 */
100 frame->pc = addr =
> 101 current->ret_stack[data->ret_stack_index--].ret
102 -
AARCH64_INSN_SIZE;
103 }
104 #endif /* CONFIG_FUNCTION_GRAPH_TRACER */
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: Binary data
