objtool: Validate disassembler headers in libopcodes probegrafted

commit 3f2de814c059 ("objtool: Fix libopcodes linking with static libraries")
tested for libopcodes availability by linking a test snippet with a forward
declaration of disassemble_init_for_target().

However, testing symbol linkage with an extern declaration only verifies
the presence of the library (.so/.a) and bypasses checking for development
headers (binutils-dev). On systems where libopcodes is present without
development headers installed, the probe succeeds, enabling BUILD_DISAS.
Subsequent compilation of objtool then fails:

  fatal error: 'bfd.h' file not found
    113 | #include <bfd.h>

Additionally, the probe invokes $(HOSTCC) without $(HOSTCFLAGS), ignoring
any sysroot or include flags specified for the host compiler.

Fix this by including <bfd.h> and <dis-asm.h> directly in the test snippet,
passing $(HOSTCFLAGS) so host compiler options are respected, and defining
PACKAGE="objtool" to satisfy the configuration check in <bfd.h>.

Fixes: 3f2de814c059 ("objtool: Fix libopcodes linking with static libraries")
Fixes: 436326bc525d ("objtool: fix build failure due to missing libopcodes check")
Reported-by: Alice Ryhl <aliceryhl@google.com>
Assisted-by: Antigravity:Gemini-Next
Signed-off-by: Ulises Mendez Martinez <umendez@google.com>
Link: https://patch.msgid.link/20260904150710.2997558-1-umendez@google.com
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>

1 files changed, 88 insertions, 0 deletions

diff --git a/fs/smb/smbdirect/debug.c b/fs/smb/smbdirect/debug.c
new file mode 100644
index 000000000..344584344
--- /dev/null
+++ b/fs/smb/smbdirect/debug.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   Copyright (C) 2017, Microsoft Corporation.
+ *   Copyright (c) 2025, Stefan Metzmacher
+ */
+
+#include "internal.h"
+#include <linux/seq_file.h>
+
+void smbdirect_connection_legacy_debug_proc_show(struct smbdirect_socket *sc,
+						 unsigned int rdma_readwrite_threshold,
+						 struct seq_file *m)
+{
+	const struct smbdirect_socket_parameters *sp;
+
+	if (!sc)
+		return;
+	sp = &sc->parameters;
+
+	seq_puts(m, "\n");
+	seq_printf(m, "SMBDirect protocol version: 0x%x ",
+		   SMBDIRECT_V1);
+	seq_printf(m, "transport status: %s (%u)",
+		   smbdirect_socket_status_string(sc->status),
+		   sc->status);
+
+	seq_puts(m, "\n");
+	seq_printf(m, "Conn receive_credit_max: %u ",
+		   sp->recv_credit_max);
+	seq_printf(m, "send_credit_target: %u max_send_size: %u",
+		   sp->send_credit_target,
+		   sp->max_send_size);
+
+	seq_puts(m, "\n");
+	seq_printf(m, "Conn max_fragmented_recv_size: %u ",
+		   sp->max_fragmented_recv_size);
+	seq_printf(m, "max_fragmented_send_size: %u max_receive_size:%u",
+		   sp->max_fragmented_send_size,
+		   sp->max_recv_size);
+
+	seq_puts(m, "\n");
+	seq_printf(m, "Conn keep_alive_interval: %u ",
+		   sp->keepalive_interval_msec / 1000);
+	seq_printf(m, "max_readwrite_size: %u rdma_readwrite_threshold: %u",
+		   sp->max_read_write_size,
+		   rdma_readwrite_threshold);
+
+	seq_puts(m, "\n");
+	seq_printf(m, "Debug count_get_receive_buffer: %llu ",
+		   sc->statistics.get_receive_buffer);
+	seq_printf(m, "count_put_receive_buffer: %llu count_send_empty: %llu",
+		   sc->statistics.put_receive_buffer,
+		   sc->statistics.send_empty);
+
+	seq_puts(m, "\n");
+	seq_printf(m, "Read Queue count_enqueue_reassembly_queue: %llu ",
+		   sc->statistics.enqueue_reassembly_queue);
+	seq_printf(m, "count_dequeue_reassembly_queue: %llu ",
+		   sc->statistics.dequeue_reassembly_queue);
+	seq_printf(m, "reassembly_data_length: %u ",
+		   sc->recv_io.reassembly.data_length);
+	seq_printf(m, "reassembly_queue_length: %u",
+		   sc->recv_io.reassembly.queue_length);
+
+	seq_puts(m, "\n");
+	seq_printf(m, "Current Credits send_credits: %u ",
+		   atomic_read(&sc->send_io.credits.count));
+	seq_printf(m, "receive_credits: %u receive_credit_target: %u",
+		   atomic_read(&sc->recv_io.credits.count),
+		   sc->recv_io.credits.target);
+
+	seq_puts(m, "\n");
+	seq_printf(m, "Pending send_pending: %u ",
+		   atomic_read(&sc->send_io.pending.count));
+
+	seq_puts(m, "\n");
+	seq_printf(m, "MR responder_resources: %u ",
+		   sp->responder_resources);
+	seq_printf(m, "max_frmr_depth: %u mr_type: 0x%x",
+		   sp->max_frmr_depth,
+		   sc->mr_io.type);
+
+	seq_puts(m, "\n");
+	seq_printf(m, "MR mr_ready_count: %u mr_used_count: %u",
+		   atomic_read(&sc->mr_io.ready.count),
+		   atomic_read(&sc->mr_io.used.count));
+}
+EXPORT_SYMBOL_GPL(smbdirect_connection_legacy_debug_proc_show);