diff options
| author |   Eric W. Biederman <ebiederm@xmission.com> | 2017-08-19 12:14:49 -0500 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2018-09-21 14:46:27 +0200 |
| commit | 851ce9e697b8a432ad1847a0c2d464b412353829 (patch) | |
| tree | a4b1578caa81973037b4e3efd567b1dfa5e7c27c /arch/x86/kernel/traps.c | |
| parent | signal/x86/traps: Move more code into do_trap_no_signal so it can be reused (diff) | |
| download | linux-dev-851ce9e697b8a432ad1847a0c2d464b412353829.tar.xz linux-dev-851ce9e697b8a432ad1847a0c2d464b412353829.zip | |
signal/x86/traps: Use force_sig_bnderr
Instead of generating the siginfo in x86 specific code use the new
helper function force_sig_bnderr to separate the concerns of
collecting the information and generating a proper siginfo.
Making the code easier to understand and maintain.
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kernel/traps.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index 23ac69a61a95..2d44e63cb583 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -498,8 +498,8 @@ dotraplinkage void do_bounds(struct pt_regs *regs, long error_code) break; /* Success, it was handled */ case 1: /* Bound violation. */ { + struct task_struct *tsk = current; struct mpx_fault_info mpx; - struct siginfo info; if (mpx_fault_info(&mpx, regs)) { /* @@ -510,19 +510,18 @@ dotraplinkage void do_bounds(struct pt_regs *regs, long error_code) } /* * Success, we decoded the instruction and retrieved - * an 'info' containing the address being accessed + * an 'mpx' containing the address being accessed * which caused the exception. This information * allows and application to possibly handle the * #BR exception itself. */ - clear_siginfo(&info); - info.si_signo = SIGSEGV; - info.si_errno = 0; - info.si_code = SEGV_BNDERR; - info.si_addr = mpx.addr; - info.si_lower = mpx.lower; - info.si_upper = mpx.upper; - do_trap(X86_TRAP_BR, SIGSEGV, "bounds", regs, error_code, &info); + if (!do_trap_no_signal(tsk, X86_TRAP_BR, "bounds", regs, + error_code)) + break; + + show_signal(tsk, SIGSEGV, "trap ", "bounds", regs, error_code); + + force_sig_bnderr(mpx.addr, mpx.lower, mpx.upper); break; } case 0: /* No exception caused by Intel MPX operations. */ |