Oleg Nesterov b02ef20a9f
uprobes/x86: Fix the wrong ->si_addr when xol triggers a trap ...
If the probed insn triggers a trap, ->si_addr = regs->ip is technically
correct, but this is not what the signal handler wants; we need to pass
the address of the probed insn, not the address of xol slot.
Add the new arch-agnostic helper, uprobe_get_trap_addr(), and change
fill_trap_info() and math_error() to use it. !CONFIG_UPROBES case in
uprobes.h uses a macro to avoid include hell and ensure that it can be
compiled even if an architecture doesn't define instruction_pointer().
Test-case:
#include <signal.h>
#include <stdio.h>
#include <unistd.h>
extern void probe_div(void);
void sigh(int sig, siginfo_t *info, void *c)
{
int passed = (info->si_addr == probe_div);
printf(passed ? "PASS\n" : "FAIL\n");
_exit(!passed);
}
int main(void)
{
struct sigaction sa = {
.sa_sigaction = sigh,
.sa_flags = SA_SIGINFO,
};
sigaction(SIGFPE, &sa, NULL);
asm (
"xor %ecx,%ecx\n"
".globl probe_div; probe_div:\n"
"idiv %ecx\n"
);
return 0;
}
it fails if probe_div() is probed.
Note: show_unhandled_signals users should probably use this helper too,
but we need to cleanup them first.
Signed-off-by: Oleg Nesterov <oleg@redhat.com >
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com >
2014-05-14 13:57:28 +02:00
2014-01-02 10:46:41 +01:00
2014-01-30 17:20:32 -08:00
2014-03-07 09:18:23 +01:00
2014-04-04 21:08:20 -07:00
2014-04-05 15:46:37 -07:00
2014-04-04 21:07:28 -07:00
2014-04-03 16:21:12 -07:00
2014-03-19 14:41:58 +09:00
2014-03-28 20:42:01 +01:00
2014-02-19 14:58:17 +01:00
2014-04-09 08:45:40 -07:00
2014-02-15 10:58:17 +00:00
2014-03-30 13:25:19 -07:00
2014-03-08 23:32:26 -08:00
2014-04-10 09:06:10 -07:00
2014-03-28 16:29:35 -04:00
2014-04-10 18:43:32 -07:00
2014-04-09 08:39:39 -07:00
2014-04-18 16:40:08 -07:00
2014-04-08 10:56:12 +02:00
2014-03-09 12:45:08 +05:30
2014-01-16 14:25:37 +01:00
2014-04-10 09:06:10 -07:00
2013-12-23 18:34:58 -08:00
2014-03-26 16:58:11 +00:00
2014-02-22 18:14:13 +01:00
2014-04-02 16:23:38 -07:00
2014-01-24 22:39:54 +01:00
2014-04-12 17:31:22 -07:00
2014-04-02 20:53:45 -07:00
2013-12-08 18:01:56 -08:00
2014-02-11 23:30:50 +05:30
2014-04-01 15:14:04 -07:00
2014-02-22 17:13:01 -05:00
2013-12-02 11:24:18 +00:00
2013-12-09 15:37:58 -05:00
2014-02-12 17:21:22 +00:00
2014-04-10 17:51:29 -04:00
2013-12-24 09:35:17 -08:00
2014-04-03 16:20:49 -07:00
2014-04-03 16:21:09 -07:00
2014-02-06 10:33:47 +01:00
2014-04-07 16:36:05 -07:00
2014-04-12 14:49:50 -07:00
2014-03-30 17:02:06 -07:00
2014-04-09 21:54:06 -06:00
2014-03-13 09:38:42 -06:00
2014-04-01 19:19:15 -07:00
2014-04-12 14:49:50 -07:00
2014-01-30 16:56:54 -08:00
2014-01-13 17:32:27 +01:00
2014-02-14 00:27:58 -05:00
2014-04-01 23:19:19 -04:00
2014-01-23 16:36:56 -08:00
2014-02-09 09:59:23 +08:00
2014-02-08 10:36:58 -05:00
2014-03-29 09:15:54 -04:00
2013-12-31 11:35:12 -08:00
2014-03-24 17:10:07 -07:00
2014-02-24 17:13:55 -08:00
2013-12-04 17:19:44 +01:00
2014-02-09 15:11:47 +01:00
2014-01-21 20:18:26 -08:00
2014-01-21 16:19:48 -08:00
2014-04-02 12:51:41 -07:00
2014-04-09 13:44:35 -07:00
2014-02-13 12:34:05 +01:00
2013-12-05 21:28:41 +08:00
2014-01-23 18:11:00 -08:00
2014-04-09 13:44:35 -07:00
2013-11-15 09:32:21 +09:00
2014-01-10 16:27:36 -08:00
2014-02-07 15:40:17 -08:00
2013-12-29 15:25:48 +01:00
2013-12-02 20:43:15 +01:00
2013-12-02 20:43:14 +01:00
2013-12-04 09:33:34 -04:00
2014-04-07 14:55:46 -07:00
2014-02-18 12:38:37 -08:00
2014-04-07 14:43:50 +02:00
2014-03-11 11:52:47 +01:00
2014-04-03 16:20:58 -07:00
2014-03-13 15:56:44 +01:00
2014-04-07 16:36:06 -07:00
2014-04-03 16:21:05 -07:00
2014-04-01 17:08:43 +02:00
2013-11-15 16:47:22 -08:00
2014-03-27 16:56:24 -04:00
2014-04-16 11:56:33 -07:00
2013-11-23 22:33:51 -08:00
2014-01-09 12:43:40 +01:00
2014-02-13 10:08:52 +05:30
2014-01-21 16:19:41 -08:00
2014-03-06 20:41:15 +05:30
2014-03-24 14:05:08 +00:00
2014-02-17 16:46:48 +01:00
2014-02-17 16:50:37 +01:00
2014-02-17 14:16:54 +05:30
2013-12-11 18:06:47 +01:00
2014-03-05 18:15:37 +00:00
2014-02-24 14:46:38 -08:00
2014-04-03 16:21:06 -07:00
2014-01-15 15:39:33 -08:00
2014-02-12 17:33:03 -05:00
2014-01-16 10:23:02 +10:30
2014-03-19 14:41:58 +09:00
2014-02-27 19:56:09 +09:00
2013-12-18 10:56:13 +10:00
2014-04-01 23:19:14 -04:00
2014-03-10 11:44:42 -04:00
2014-04-14 16:26:47 -04:00
2014-03-07 10:19:57 -05:00
2013-12-08 18:22:32 -08:00
2014-01-21 23:17:20 -08:00
2014-02-28 15:12:09 -08:00
2014-04-12 14:49:50 -07:00
2014-02-18 12:20:45 -08:00
2014-04-03 16:20:51 -07:00
2014-04-08 20:43:28 -04:00
2014-03-11 22:52:43 -04:00
2014-03-03 11:32:08 +01:00
2014-01-23 16:36:52 -08:00
2013-11-19 16:39:06 -05:00
2014-03-10 17:26:19 -07:00
2014-02-20 14:54:28 +01:00
2014-02-19 17:22:44 +01:00
2013-12-17 14:27:17 -05:00
2014-03-13 12:48:32 +01:00
2014-02-17 17:12:47 +01:00
2014-04-02 16:24:28 -07:00
2014-04-01 19:06:50 +02:00
2014-04-04 09:12:49 +02:00
2014-03-20 12:35:45 +01:00
2014-03-04 07:55:47 -08:00
2014-02-08 10:36:58 -05:00
2014-04-03 16:20:59 -07:00
2014-04-16 14:14:07 -07:00
2014-01-16 11:15:50 +01:00
2014-01-29 20:40:08 +01:00
2014-03-05 17:16:45 +01:00
2013-12-07 01:03:14 +01:00
2014-04-07 16:36:07 -07:00
2014-03-20 11:53:20 -04:00
2014-01-04 20:11:33 -05:00
2014-01-04 20:10:24 -05:00
2014-03-26 16:41:28 -04:00
2013-12-29 16:34:25 -05:00
2013-12-11 14:47:40 -05:00
2014-03-07 11:41:32 -05:00
2014-02-13 20:24:13 -08:00
2014-03-24 14:07:31 +00:00
2014-02-19 17:22:44 +01:00
2014-04-07 16:36:11 -07:00
2014-01-09 13:06:59 +01:00
2014-02-26 14:42:09 -07:00
2014-03-04 17:51:06 +01:00
2014-02-25 15:25:45 -08:00
2014-01-27 21:02:39 -08:00
2014-04-17 12:30:40 -07:00
2014-04-17 12:23:07 -07:00
2014-01-19 19:53:18 -08:00
2014-02-21 21:49:07 +01:00
2014-03-14 13:43:33 +01:00
2013-12-19 17:43:04 +00:00
2013-11-19 19:06:41 +01:00
2014-03-13 12:11:00 +10:30
2013-12-07 01:24:33 +01:00
2014-03-31 00:45:09 -04:00
2014-01-16 00:08:12 +01:00
2014-01-08 15:23:53 +00:00
2014-04-01 11:22:57 -07:00
2014-04-06 09:38:07 -07:00
2014-03-08 22:08:29 -08:00
2014-03-06 16:30:46 +01:00
2014-02-19 14:58:17 +01:00
2014-01-25 08:55:09 +01:00
2014-04-03 16:20:50 -07:00
2014-04-03 16:21:04 -07:00
2014-01-21 16:19:45 -08:00
2014-03-21 13:43:13 +01:00
2014-04-07 16:36:14 -07:00
2014-03-19 16:30:23 -04:00
2014-02-13 20:21:59 -08:00
2014-04-03 16:21:01 -07:00
2013-11-15 09:32:22 +09:00
2014-03-31 14:13:25 -07:00
2013-12-20 12:25:45 -08:00
2013-12-11 15:52:34 +01:00
2014-03-18 19:19:41 -04:00
2014-02-28 15:36:37 -08:00
2014-04-16 15:09:51 -04:00
2013-12-26 13:29:35 -05:00
2014-03-12 00:16:56 +00:00
2014-04-07 16:36:13 -07:00
2013-12-20 12:20:26 -08:00
2014-04-07 16:35:54 -07:00
2013-12-11 13:54:13 -05:00
2014-01-21 16:19:49 -08:00
2014-04-02 20:53:45 -07:00
2014-04-13 13:28:13 -07:00
2014-04-12 12:38:53 -07:00
2014-01-21 16:19:44 -08:00
2014-04-07 16:35:55 -07:00
2014-04-03 16:21:01 -07:00
2014-04-09 13:44:35 -07:00
2014-04-06 09:38:07 -07:00
2014-03-24 12:21:00 +10:30
2014-04-01 23:19:08 -04:00
2014-03-04 13:51:06 -05:00
2014-01-27 21:02:39 -08:00
2013-12-13 08:44:30 -07:00
2014-03-11 12:14:56 +01:00
2014-04-01 23:19:10 -04:00
2014-01-14 15:15:25 -08:00
2014-04-03 14:31:34 -04:00
2014-04-03 14:29:12 -04:00
2014-01-01 23:43:36 -05:00
2014-03-29 17:58:37 -04:00
2013-12-05 13:05:48 -08:00
2014-03-17 15:14:16 -04:00
2014-03-17 15:15:21 -04:00
2014-04-03 16:21:26 -07:00
2014-04-01 16:25:51 -04:00
2014-01-25 03:14:05 -05:00
2014-04-07 10:59:19 -07:00
2014-04-11 16:45:59 -07:00
2014-02-05 10:04:37 -06:00
2014-03-11 17:26:47 +00:00
2014-03-07 16:02:46 +01:00
2014-01-13 14:29:49 -08:00
2014-03-10 22:42:28 -07:00
2014-03-11 17:27:12 +00:00
2014-04-18 08:36:10 -05:00
2014-04-04 00:31:49 +01:00
2014-02-06 13:48:51 -08:00
2014-04-03 16:21:04 -07:00
2014-04-03 16:21:00 -07:00
2014-01-23 16:36:55 -08:00
2013-12-07 01:03:14 +01:00
2014-04-01 18:49:04 -07:00
2014-02-06 17:31:52 +01:00
2014-01-10 14:00:47 -07:00
2014-03-19 15:11:19 -06:00
2013-11-14 11:28:18 -07:00
2014-01-23 20:17:18 +00:00
2013-12-05 12:59:23 -05:00
2014-04-07 16:36:14 -07:00
2014-04-18 12:54:45 +02:00
2014-04-16 14:36:12 -04:00
2014-04-12 14:49:50 -07:00
2014-02-11 00:36:00 +01:00
2014-03-02 00:18:15 +01:00
2014-03-20 13:25:54 +01:00
2014-01-25 23:58:17 -05:00
2014-01-28 08:38:04 -08:00
2013-12-23 18:21:11 -08:00
2014-01-13 17:32:27 +01:00
2014-01-23 14:48:35 +01:00
2014-04-03 16:21:08 -07:00
2013-11-26 20:55:33 -08:00
2013-12-20 13:12:01 -08:00
2014-04-01 16:43:18 -04:00
2014-03-21 14:21:13 -04:00
2014-02-10 11:16:39 +01:00
2014-03-21 18:26:03 +01:00
2014-04-03 16:20:54 -07:00
2014-04-03 16:21:01 -07:00
2014-01-23 16:36:58 -08:00
2014-03-19 22:24:08 -04:00
2014-02-17 15:01:52 -08:00
2014-03-31 11:05:24 -07:00
2014-03-20 17:12:25 -07:00
2014-03-20 17:12:25 -07:00
2014-04-16 08:56:09 +02:00
2014-01-21 23:17:20 -08:00
2014-04-01 16:13:21 -07:00
2014-04-07 16:35:54 -07:00
2014-01-16 12:00:56 -08:00
2014-03-09 19:53:45 +01:00
2014-04-07 16:36:07 -07:00
2014-03-20 22:09:09 -07:00
2014-01-13 13:41:50 +01:00
2013-12-17 21:19:08 -08:00
2014-01-13 13:47:36 +01:00
2014-01-28 13:20:09 -08:00
2013-12-08 17:56:37 -08:00
2014-04-12 12:38:53 -07:00
2014-01-19 19:55:50 -08:00
2014-03-31 00:45:09 -04:00
2014-04-01 17:08:43 +02:00
2013-11-15 09:32:20 +09:00
2014-01-12 10:13:59 +01:00
2014-02-28 16:27:18 -08:00
2014-03-21 04:12:33 +09:00
2014-03-17 16:20:49 -07:00
2013-12-07 01:24:33 +01:00
2014-02-04 10:22:39 +09:00
2013-12-19 19:09:38 -05:00
2014-01-27 21:02:39 -08:00
2014-04-03 16:21:00 -07:00
2014-04-02 20:53:45 -07:00
2014-01-25 11:17:34 -08:00
2014-04-13 13:28:13 -07:00
2014-04-07 16:36:13 -07:00
2014-02-24 14:47:15 -08:00
2014-01-22 21:57:05 -08:00
2014-01-13 13:47:36 +01:00
2014-01-13 13:47:36 +01:00
2013-12-16 11:36:13 +01:00
2014-01-27 21:02:40 -08:00
2014-02-15 11:55:28 -08:00
2014-02-17 15:01:37 -08:00
2014-03-19 08:58:30 +00:00
2014-01-21 17:05:27 -08:00
2014-04-03 16:21:01 -07:00
2013-11-15 09:32:14 +09:00
2014-03-26 16:49:31 -04:00
2014-04-12 13:06:10 -07:00
2014-04-16 11:56:33 -07:00
2013-12-07 01:03:14 +01:00
2014-02-26 17:08:40 -05:00
2014-01-14 08:01:10 -08:00
2013-12-04 09:31:34 -04:00
2014-01-15 23:05:31 +01:00
2014-04-07 16:36:13 -07:00
2014-02-23 09:04:27 -08:00
2014-01-06 14:37:25 +01:00
2014-04-09 10:12:11 -04:00
2013-12-09 11:09:24 -08:00
2014-02-18 12:50:26 -08:00
2014-04-02 20:53:45 -07:00
2014-03-14 22:41:36 -04:00
2014-01-13 13:47:37 +01:00
2013-11-26 20:55:33 -08:00
2014-02-12 15:00:34 -08:00
2014-04-01 23:19:21 -04:00
2014-05-14 13:57:28 +02:00
2014-03-04 15:38:16 -08:00
2014-04-01 17:06:09 -07:00
2014-02-26 11:38:39 -07:00
2014-04-03 16:21:04 -07:00
2014-04-07 16:35:53 -07:00
2013-12-03 11:15:58 -08:00
2013-11-22 18:20:43 -05:00
2014-04-07 16:36:14 -07:00
2013-12-02 20:43:15 +01:00
2014-01-23 16:37:04 -08:00
2014-04-18 16:40:08 -07:00
2014-02-28 14:08:26 -05:00
2014-04-01 11:00:07 -07:00
2014-04-07 16:35:57 -07:00
2013-11-26 11:09:08 +01:00
2014-01-30 16:56:55 -08:00
b02ef20a9f