diff --git a/gdb/nat/linux-procfs.c b/gdb/nat/linux-procfs.c
index 6be3a26f252..b17e3120792 100644
--- a/gdb/nat/linux-procfs.c
+++ b/gdb/nat/linux-procfs.c
@@ -352,6 +352,11 @@ linux_proc_pid_to_exec_file (int pid)
else
buf[len] = '\0';
+ /* Use /proc/PID/exe if the actual file can't be read, but /proc/PID/exe
+ can be. */
+ if (access (buf, R_OK) != 0 && access (name, R_OK) == 0)
+ strcpy (buf, name);
+
return buf;
}
diff --git a/gdb/testsuite/gdb.base/attach-deleted-exec.c b/gdb/testsuite/gdb.base/attach-deleted-exec.c
new file mode 100644
index 00000000000..ebfae87fbfb
--- /dev/null
+++ b/gdb/testsuite/gdb.base/attach-deleted-exec.c
@@ -0,0 +1,29 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2024 Free Software Foundation, Inc.
+
+ 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 3 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, see . */
+
+#include
+
+int
+main ()
+{
+ alarm (60);
+
+ while (1)
+ usleep (100000);
+
+ return 0;
+}
diff --git a/gdb/testsuite/gdb.base/attach-deleted-exec.exp b/gdb/testsuite/gdb.base/attach-deleted-exec.exp
new file mode 100644
index 00000000000..3e31c36bcc4
--- /dev/null
+++ b/gdb/testsuite/gdb.base/attach-deleted-exec.exp
@@ -0,0 +1,53 @@
+# Copyright (C) 2024 Free Software Foundation, Inc.
+#
+# 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 3 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, see .
+
+# Attach to a process, the executable for which has been deleted. On
+# GNU/Linux GDB will spot the missing executable and fallback to use
+# /proc/PID/exe instead.
+
+require can_spawn_for_attach
+require {istarget *-linux*}
+
+standard_testfile
+
+if { [build_executable "failed to prepare" $testfile $srcfile] } {
+ return -1
+}
+
+set test_spawn_id [spawn_wait_for_attach $binfile]
+set testpid [spawn_id_get_pid $test_spawn_id]
+
+# Move the executable rather than deleting it. This just to aid with
+# debugging if someone needs to reproduce this test.
+set binfile_moved ${binfile}_moved
+
+# Don't move BINFILE as the kernel will just assign a new name to the
+# same inode; and the /proc/PID/exe link will continue to point to the
+# renamed inode.
+remote_exec host "cp $binfile $binfile_moved"
+remote_exec host "rm $binfile"
+
+# Don't pass the executable when GDB starts. Instead rely on GDB
+# finding the executable from the PID we attach too.
+clean_restart
+
+# Attach. GDB should spot that the executable is gone and fallback to
+# use /proc/PID/exe.
+gdb_test "attach $testpid" \
+ "Attaching to process $decimal\r\nReading symbols from /proc/${testpid}/exe\\.\\.\\..*" \
+ "attach to process with deleted executable"
+
+# Cleanup.
+kill_wait_spawned_process $test_spawn_id
diff --git a/gdb/testsuite/gdb.server/connect-with-no-symbol-file.exp b/gdb/testsuite/gdb.server/connect-with-no-symbol-file.exp
index 284004abadd..becd94d9f90 100644
--- a/gdb/testsuite/gdb.server/connect-with-no-symbol-file.exp
+++ b/gdb/testsuite/gdb.server/connect-with-no-symbol-file.exp
@@ -89,6 +89,18 @@ proc connect_no_symbol_file { sysroot action } {
}
}
gdb_assert $ok "connection to GDBserver succeeded"
+
+ # GDB will register /proc/PID/exe as the executable for some of
+ # these tests. Once the test has finished the inferior will still
+ # have /proc/PID/exe registered as its executable even though that
+ # file no longer exists (most likely). GDB will then complain
+ # about the inferior's executable having disappeared. Silence
+ # these warnings by removing any registered file from the
+ # executable.
+ gdb_test "with confirm off -- file" \
+ [multi_line \
+ "No executable file now\\." \
+ "No symbol file now\\."]
}
# Make sure we have the original symbol file in a safe place to copy from.