On Wed, 2009-10-21 at 23:14 -0700, Garrett Cooper wrote:
> The following calls ptrace(PTRACE_TRACEME, 0) for all signals and
> validates that all signals apart from SIGKILL are properly intercepted
> and WIFSTOPPED remains true, and SIGKILL is properly treated as
> WIFSIGNALED() && WTERMSIG() returns SIGKILL.
>
> 1. This test app helped unroot another issue with our custom Linux
> platform here at Cisco.
> 2. This test application does function properly on a Gentoo Linux
> based x86_64 / 2.6.30 kernel however, so it's an issue with our OS
> platform.
>
> I will add this application to testcases/kernel/syscalls/ptrace,
> if someone else sees the value in it. I agree that additional error
> checking could be added for the calls to kill(2)... I just whipped
> this up in 45 mins after finding this strange behavior on our
> platform.
>
> Signed-off-by: Garrett Cooper <[email protected]>
Just a quick build and test. It fails on my 32 bit and 64 bit X
machines:
# ./testcases/kernel/syscalls/ptrace/ptrace05
ptrace05 0 TINFO : [child] Sending kill(.., 0)
ptrace05 1 TFAIL : Didn't stop as expected.
ptrace05 0 TINFO : Is still alive!?
ptrace05 0 TINFO : [child] Sending kill(.., 1)
ptrace05 2 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 2)
ptrace05 3 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 3)
ptrace05 4 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 4)
ptrace05 5 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 5)
ptrace05 6 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 6)
ptrace05 7 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 7)
ptrace05 8 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 8)
ptrace05 9 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 9)
ptrace05 10 TPASS : Killed with SIGKILL, as expected.
ptrace05 0 TINFO : [child] Sending kill(.., 10)
ptrace05 11 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 11)
ptrace05 12 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 12)
ptrace05 13 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 13)
ptrace05 14 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 14)
ptrace05 15 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 15)
ptrace05 16 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 16)
ptrace05 17 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 17)
ptrace05 18 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 18)
ptrace05 19 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 19)
ptrace05 20 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 20)
ptrace05 21 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 21)
ptrace05 22 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 22)
ptrace05 23 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 23)
ptrace05 24 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 24)
ptrace05 25 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 25)
ptrace05 26 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 26)
ptrace05 27 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 27)
ptrace05 28 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 28)
ptrace05 29 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 29)
ptrace05 30 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 30)
ptrace05 31 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 31)
ptrace05 32 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 32)
ptrace05 33 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 33)
ptrace05 34 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 34)
ptrace05 35 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 35)
ptrace05 36 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 36)
ptrace05 37 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 37)
ptrace05 38 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 38)
ptrace05 39 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 39)
ptrace05 40 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 40)
ptrace05 41 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 41)
ptrace05 42 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 42)
ptrace05 43 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 43)
ptrace05 44 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 44)
ptrace05 45 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 45)
ptrace05 46 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 46)
ptrace05 47 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 47)
ptrace05 48 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 48)
ptrace05 49 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 49)
ptrace05 50 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 50)
ptrace05 51 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 51)
ptrace05 52 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 52)
ptrace05 53 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 53)
ptrace05 54 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 54)
ptrace05 55 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 55)
ptrace05 56 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 56)
ptrace05 57 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 57)
ptrace05 58 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 58)
ptrace05 59 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 59)
ptrace05 60 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 60)
ptrace05 61 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 61)
ptrace05 62 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 62)
ptrace05 63 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 63)
ptrace05 64 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 64)
ptrace05 65 TPASS : Stopped as expected
# echo $?
1
# uname -a
Linux 2.6.27.19-5-default #1 SMP 2009-02-28 04:40:21 +0100 x86_64 x86_64
x86_64 GNU/Linux
# ./testcases/kernel/syscalls/ptrace/ptrace05
ptrace05 0 TINFO : [child] Sending kill(.., 0)
ptrace05 1 TFAIL : Didn't stop as expected.
ptrace05 0 TINFO : Is still alive!?
ptrace05 0 TINFO : [child] Sending kill(.., 1)
ptrace05 2 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 2)
ptrace05 3 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 3)
ptrace05 4 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 4)
ptrace05 5 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 5)
ptrace05 6 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 6)
ptrace05 7 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 7)
ptrace05 8 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 8)
ptrace05 9 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 9)
ptrace05 10 TPASS : Killed with SIGKILL, as expected.
ptrace05 0 TINFO : [child] Sending kill(.., 10)
ptrace05 11 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 11)
ptrace05 12 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 12)
ptrace05 13 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 13)
ptrace05 14 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 14)
ptrace05 15 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 15)
ptrace05 16 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 16)
ptrace05 17 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 17)
ptrace05 18 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 18)
ptrace05 19 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 19)
ptrace05 20 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 20)
ptrace05 21 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 21)
ptrace05 22 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 22)
ptrace05 23 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 23)
ptrace05 24 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 24)
ptrace05 25 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 25)
ptrace05 26 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 26)
ptrace05 27 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 27)
ptrace05 28 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 28)
ptrace05 29 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 29)
ptrace05 30 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 30)
ptrace05 31 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 31)
ptrace05 32 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 32)
ptrace05 33 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 33)
ptrace05 34 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 34)
ptrace05 35 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 35)
ptrace05 36 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 36)
ptrace05 37 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 37)
ptrace05 38 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 38)
ptrace05 39 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 39)
ptrace05 40 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 40)
ptrace05 41 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 41)
ptrace05 42 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 42)
ptrace05 43 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 43)
ptrace05 44 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 44)
ptrace05 45 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 45)
ptrace05 46 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 46)
ptrace05 47 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 47)
ptrace05 48 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 48)
ptrace05 49 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 49)
ptrace05 50 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 50)
ptrace05 51 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 51)
ptrace05 52 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 52)
ptrace05 53 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 53)
ptrace05 54 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 54)
ptrace05 55 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 55)
ptrace05 56 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 56)
ptrace05 57 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 57)
ptrace05 58 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 58)
ptrace05 59 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 59)
ptrace05 60 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 60)
ptrace05 61 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 61)
ptrace05 62 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 62)
ptrace05 63 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 63)
ptrace05 64 TPASS : Stopped as expected
ptrace05 0 TINFO : [child] Sending kill(.., 64)
ptrace05 65 TPASS : Stopped as expected
# echo $?
1
# uname -a
Linux 2.6.18-92.el5 #1 SMP Tue Apr 29 13:16:12 EDT 2008 i686 i686 i386
GNU/Linux
Regards--
Subrata
>
> /*
>
> ******************************************************************************
> *
> * ptrace05 - an app which does PTRACE_TRACEME over the maximum available
> * signal range, or a set user-defined range.
> *
> * Copyright (C) 2009, Garrett Cooper
> *
> * This program is free software; you can redistribute it and/or modify
> * it under the terms of the GNU General Public License as published by
> * the Free Software Foundation; either version 2 of the License, or
> * (at your option) any later version.
> *
> * This program is distributed in the hope that it will be useful,
> * but WITHOUT ANY WARRANTY; without even the implied warranty of
> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> * GNU General Public License for more details.
> *
> * You should have received a copy of the GNU General Public License along
> * with this program; if not, write to the Free Software Foundation, Inc.,
> * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> *
>
> ******************************************************************************
> */
>
> #include <sys/ptrace.h>
> #include <sys/types.h>
> #include <sys/wait.h>
> #include <signal.h>
> #include <errno.h>
> #include <libgen.h>
> #include <math.h>
> #include <stdlib.h>
> #include <stdio.h>
> #include <string.h>
> #include <unistd.h>
> #include "test.h"
> #include "usctest.h"
>
> char *TCID = "ptrace05";
> int TST_TOTAL = 0;
>
> int usage(const char*);
>
> int
> usage(const char *argv0)
> {
> fprintf(stderr, "usage: %s [start-signum] [end-signum]\n", argv0);
> return 1;
> }
>
> int
> main(int argc, char **argv)
> {
>
> int end_signum = -1;
> int signum;
> int start_signum = -1;
> int status;
>
> pid_t child;
>
> /* Parse the CLI args appropriately. */
> switch (argc) {
> case 3:
> end_signum = (int) strtol((const char*) *(argv+2), NULL, 10);
> /* Parse the signal value. */
> if (end_signum == 0 && errno != 0) {
> tst_resm(TBROK, "argument (%s) isn't a valid number.\n",
> *(argv+2));
> tst_exit();
> }
> /* FALLTHROUGH */
> case 2:
> start_signum = (int) strtol((const char*) *(argv+1), NULL, 10);
> /* Parse the signal value. */
> if (end_signum == 0 && errno != 0) {
> tst_resm(TBROK, "argument (%s) isn't a valid number.\n",
> *(argv+1) );
> tst_exit();
> }
> break;
> case 1:
> /* Do nothing. */
> break;
> default:
> return usage(basename(*argv));
> }
>
> if (start_signum == -1) {
> start_signum = 0;
> }
> if (end_signum == -1) {
> end_signum = SIGRTMAX;
> }
>
> for (signum = start_signum; signum <= end_signum; signum++) {
>
> switch (child = fork()) {
> case -1:
> tst_resm(TBROK | TERRNO, "Failed to fork properly.");
> break;
> case 0:
>
> if (ptrace(PTRACE_TRACEME, 0, NULL, NULL) != -1) {
> tst_resm(TINFO, "[child] Sending kill(.., %d)",
> signum);
> kill(getpid(), signum);
> } else {
>
> /*
> * This won't increment the TST_COUNT var.
> * properly, but it'll show up as a failure
> * nonetheless.
> */
> tst_resm(TFAIL | TERRNO,
> "Failed to ptrace(PTRACE_TRACEME, ...) "
> "properly");
>
> }
> exit(2); /* Shouldn't get here. */
>
> break;
>
> default:
>
> waitpid(child, &status, 0);
>
> switch(signum) {
>
> /*
> * SIGKILL should be trigger WIFSIGNALED => `true',
> * and should return WTERMSIG => SIGKILL
> */
> case SIGKILL:
> if (WIFSIGNALED(status)) {
> /* SIGKILL must be uncatchable. */
> if (WTERMSIG(status) == SIGKILL) {
> tst_resm(TPASS,
> "Killed with SIGKILL, "
> "as expected.");
> } else {
> tst_resm(TPASS,
> "Didn't die with "
> "SIGKILL (?!) ");
> }
> } else if (WIFEXITED(status)) {
> tst_resm(TFAIL,
> "Exited unexpectedly instead "
> "of dying with SIGKILL.");
> } else if (WIFSTOPPED(status)) {
> tst_resm(TFAIL,
> "Stopped instead of dying "
> "with SIGKILL.");
> }
> break;
> /* All other processes should be stopped. */
> default:
> if (WIFSTOPPED(status)) {
> tst_resm(TPASS, "Stopped as expected");
> } else {
> tst_resm(TFAIL, "Didn't stop as "
> "expected.");
> if (kill (child, 0)) {
> tst_resm(TINFO,
> "Is still alive!?");
> } else if (WIFEXITED(status)) {
> tst_resm(TINFO,
> "Exited normally");
> } else if (WIFSIGNALED(status)) {
> tst_resm(TINFO,
> "Was signaled with "
> "signum=%d",
> WTERMSIG(status));
> }
>
> }
>
> break;
>
> }
>
> }
> /* Make sure the child dies a quick and painless death ... */
> kill(child, 9);
>
> }
>
> tst_exit();
>
> }
>
> ------------------------------------------------------------------------------
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------------------------------------------------------------------------------
Come build with us! The BlackBerry(R) Developer Conference in SF, CA
is the only developer event you need to attend this year. Jumpstart your
developing skills, take BlackBerry mobile applications to market and stay
ahead of the curve. Join us from November 9 - 12, 2009. Register now!
http://p.sf.net/sfu/devconference
_______________________________________________
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