184 lines
6.1 KiB
Diff
184 lines
6.1 KiB
Diff
Index: gdb-6.8.50.20090803/gdb/linux-nat.c
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===================================================================
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--- gdb-6.8.50.20090803.orig/gdb/linux-nat.c 2009-08-03 17:24:03.000000000 +0200
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+++ gdb-6.8.50.20090803/gdb/linux-nat.c 2009-08-03 17:27:23.000000000 +0200
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@@ -202,6 +202,9 @@ blocked. */
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static struct target_ops *linux_ops;
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static struct target_ops linux_ops_saved;
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+/* PID of the inferior stopped by SIGSTOP before attaching (or zero). */
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+static pid_t pid_was_stopped;
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+
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/* The method to call, if any, when a new thread is attached. */
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static void (*linux_nat_new_thread) (ptid_t);
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@@ -790,7 +793,14 @@ linux_child_follow_fork (struct target_o
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linux_parent_pid = parent_pid;
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}
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else if (detach_fork)
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- target_detach (NULL, 0);
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+ {
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+ /* We should check PID_WAS_STOPPED and detach it stopped accordingly.
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+ In this point of code it cannot be 1 as we would not get FORK
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+ executed without CONTINUE first which resets PID_WAS_STOPPED.
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+ We would have to first TARGET_STOP and WAITPID it as with running
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+ inferior PTRACE_DETACH, SIGSTOP will ignore the signal. */
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+ target_detach (NULL, 0);
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+ }
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inferior_ptid = ptid_build (child_pid, child_pid, 0);
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add_thread (inferior_ptid);
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@@ -1231,6 +1241,7 @@ linux_nat_post_attach_wait (ptid_t ptid,
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if (debug_linux_nat)
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fprintf_unfiltered (gdb_stdlog,
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"LNPAW: Attaching to a stopped process\n");
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+ pid_was_stopped = GET_PID (ptid);
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/* The process is definitely stopped. It is in a job control
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stop, unless the kernel predates the TASK_STOPPED /
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@@ -1512,6 +1523,9 @@ GPT: lwp %s had signal %s, but it is in
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*status = lp->status;
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}
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+ if (*status == 0 && GET_PID (lp->ptid) == pid_was_stopped)
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+ *status = W_STOPCODE (SIGSTOP);
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+
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return 0;
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}
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@@ -1621,6 +1635,8 @@ linux_nat_detach (struct target_ops *ops
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}
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else
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linux_ops->to_detach (ops, args, from_tty);
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+
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+ pid_was_stopped = 0;
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}
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/* Resume LP. */
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@@ -1774,6 +1790,14 @@ linux_nat_resume (struct target_ops *ops
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resume_callback. */
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lp->stopped = 0;
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+ /* At this point, we are going to resume the inferior and if we
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+ have attached to a stopped process, we no longer should leave
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+ it as stopped if the user detaches. PTID variable has PID set to LWP
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+ while we need to check the real PID here. */
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+
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+ if (!step && lp && pid_was_stopped == GET_PID (lp->ptid))
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+ pid_was_stopped = 0;
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+
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if (resume_many)
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iterate_over_lwps (ptid, resume_callback, NULL);
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@@ -3322,6 +3346,8 @@ linux_nat_mourn_inferior (struct target_
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there are other viable forks to debug. Delete the exiting
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one and context-switch to the first available. */
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linux_fork_mourn_inferior ();
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+
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+ pid_was_stopped = 0;
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}
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/* Convert a native/host siginfo object, into/from the siginfo in the
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Index: gdb-6.8.50.20090803/gdb/testsuite/gdb.threads/attach-stopped.exp
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===================================================================
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--- gdb-6.8.50.20090803.orig/gdb/testsuite/gdb.threads/attach-stopped.exp 2009-01-03 06:58:07.000000000 +0100
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+++ gdb-6.8.50.20090803/gdb/testsuite/gdb.threads/attach-stopped.exp 2009-08-03 17:26:22.000000000 +0200
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@@ -62,7 +62,65 @@ proc corefunc { threadtype } {
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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- # Verify that we can attach to the stopped process.
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+ # Verify that we can attach to the process by first giving its
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+ # executable name via the file command, and using attach with the
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+ # process ID.
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+
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+ set test "$threadtype: set file, before attach1 to stopped process"
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+ gdb_test_multiple "file $binfile" "$test" {
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+ -re "Load new symbol table from.*y or n. $" {
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+ gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
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+ "$test (re-read)"
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+ }
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+ -re "Reading symbols from $escapedbinfile\.\.\.*done.*$gdb_prompt $" {
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+ pass "$test"
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+ }
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+ }
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+
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+ set test "$threadtype: attach1 to stopped, after setting file"
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+ gdb_test_multiple "attach $testpid" "$test" {
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+ -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*$gdb_prompt $" {
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+ pass "$test"
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+ }
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+ }
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+
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+ # ".*sleep.*clone.*" would fail on s390x as bt stops at START_THREAD there.
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+ if {[string equal $threadtype threaded]} {
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+ gdb_test "thread apply all bt" ".*sleep.*start_thread.*" "$threadtype: attach1 to stopped bt"
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+ } else {
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+ gdb_test "bt" ".*sleep.*main.*" "$threadtype: attach1 to stopped bt"
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+ }
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+
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+ # Exit and detach the process.
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+
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+ gdb_exit
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+
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+ # Avoid some race:
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+ sleep 2
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+
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+ if [catch {open /proc/${testpid}/status r} fileid] {
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+ set line2 "NOTFOUND"
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+ } else {
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+ gets $fileid line1;
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+ gets $fileid line2;
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+ close $fileid;
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+ }
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+
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+ set test "$threadtype: attach1, exit leaves process stopped"
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+ if {[string match "*(stopped)*" $line2]} {
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+ pass $test
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+ } else {
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+ fail $test
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+ }
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+
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+ # At this point, the process should still be stopped
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+
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+ gdb_start
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+ gdb_reinitialize_dir $srcdir/$subdir
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+ gdb_load ${binfile}
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+
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+ # Verify that we can attach to the process just by giving the
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+ # process ID.
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set test "$threadtype: attach2 to stopped, after setting file"
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gdb_test_multiple "attach $testpid" "$test" {
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Index: gdb-6.8.50.20090803/gdb/testsuite/gdb.threads/attachstop-mt.exp
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===================================================================
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--- gdb-6.8.50.20090803.orig/gdb/testsuite/gdb.threads/attachstop-mt.exp 2009-01-03 06:58:07.000000000 +0100
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+++ gdb-6.8.50.20090803/gdb/testsuite/gdb.threads/attachstop-mt.exp 2009-08-03 17:26:22.000000000 +0200
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@@ -176,12 +176,23 @@ gdb_test "bt" ".*sleep.*(func|main).*" "
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# Exit and detach the process.
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gdb_exit
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-# Stop the program
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-remote_exec build "kill -s STOP ${testpid}"
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-
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# No race
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sleep 2
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+set fileid3 [open $status2 r];
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+gets $fileid3 line1;
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+gets $fileid3 line2;
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+close $fileid3;
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+
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+set test "attach3, exit leaves process stopped"
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+if {[string match "*(stopped)*" $line2]} {
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+ pass $test
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+} else {
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+ fail $test
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+}
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+
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+# At this point, the process should still be stopped
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+
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# Continue the test as we would hit another expected bug regarding
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# Program received signal SIGSTOP, Stopped (signal).
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# across NPTL threads.
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