On Fri, 20 Apr 2018 07:38:03 PDT (-0700), ebiederm@xxxxxxxxxxxx wrote:
Filling in struct siginfo before calling force_sig_info a tedious and
error prone process, where once in a great while the wrong fields
are filled out, and siginfo has been inconsistently cleared.
Simplify this process by using the helper force_sig_fault. Which
takes as a parameters all of the information it needs, ensures
all of the fiddly bits of filling in struct siginfo are done properly
and then calls force_sig_info.
In short about a 5 line reduction in code for every time force_sig_info
is called, which makes the calling function clearer.
Cc: Palmer Dabbelt <palmer@xxxxxxxxxx>
Cc: Albert Ou <albert@xxxxxxxxxx>
Cc: linux-riscv@xxxxxxxxxxxxxxxxxxx
Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
---
arch/riscv/kernel/traps.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c
index 48aa6471cede..3087940008f4 100644
--- a/arch/riscv/kernel/traps.c
+++ b/arch/riscv/kernel/traps.c
@@ -66,14 +66,7 @@ void die(struct pt_regs *regs, const char *str)
static inline void do_trap_siginfo(int signo, int code,
unsigned long addr, struct task_struct *tsk)
{
- siginfo_t info;
-
- clear_siginfo(&info);
- info.si_signo = signo;
- info.si_errno = 0;
- info.si_code = code;
- info.si_addr = (void __user *)addr;
- force_sig_info(signo, &info, tsk);
+ force_sig_fault(signo, code, (void __user *)addr, tsk);
}
void do_trap(struct pt_regs *regs, int signo, int code,
If I understand this correctly, any change in behavior this causes would have
been a bug on our end not filling out siginfo correctly? In that case then
feel free to add an
Acked-by: Palmer Dabbelt <palmer@xxxxxxxxxx>
Thanks!
