kernel.git/arch/csky/kernel/process.c, branch linux-5.7.y

csky: Fixup gdbmacros.txt with name sp in thread_struct

2020-05-14T16:16:18Z

The gdbmacros.txt use sp in thread_struct, but csky use ksp. This cause bttnobp fail to excute. TODO: - Still couldn't display the contents of stack. Signed-off-by: Guo Ren

csky: Fixup calltrace panic

2020-05-13T09:55:06Z

The implementation of show_stack will panic with wrong fp: addr = *fp++; because the fp isn't checked properly. The current implementations of show_stack, wchan and stack_trace haven't been designed properly, so just deprecate them. This patch is a reference to riscv's way, all codes are modified from arm's. The patch is passed with: - cat /proc//stack - cat /proc//wchan - echo c > /proc/sysrq-trigger Signed-off-by: Guo Ren

csky: Implement copy_thread_tls

2020-02-21T07:43:25Z

This is required for clone3 which passes the TLS value through a struct rather than a register. Cc: Amanieu d'Antras Signed-off-by: Guo Ren

csky: Initial stack protector support

2020-02-21T07:43:24Z

This is a basic -fstack-protector support without per-task canary switching. The protector will report something like when stack corruption is detected: It's tested with strcpy local array overflow in sys_kill and get: stack-protector: Kernel stack is corrupted in: sys_kill+0x23c/0x23c TODO: - Support task switch for different cannary Signed-off-by: Mao Han Signed-off-by: Guo Ren

csky: Fixup add zero_fp fixup perf backtrace panic

2019-09-30T02:26:32Z

We need set fp zero to let backtrace know the end. The patch fixup perf callchain panic problem, because backtrace didn't know what is the end of fp. Signed-off-by: Guo Ren Reported-by: Mao Han

csky: stacktrace supported.

2018-12-31T15:12:22Z

The gcc option "-mbacktrace" will push fp(r8),lr into stack and we could unwind the stack with: fp = *fp lr = (unsigned int *)fp[1] Signed-off-by: Guo Ren

csky: Process management and Signal

2018-10-25T16:54:13Z

This patch adds files related to task_switch, sigcontext, signal, fpu context switch. Signed-off-by: Guo Ren Cc: Arnd Bergmann Cc: Eric W. Biederman