[for-linus][PATCH 4/5] tracing: Fix unload_page for simple_ring_buffer init rollback

[Steven Rostedt]

From: Vincent Donnefort <vdonnefort@xxxxxxxxxx>

The unload_page callback expects the return value of load_page() as its
argument: ret = load_page(va); unload(ret). Fix the rollback code in
simple_ring_buffer_init_mm() where the descriptor's VA is used instead
of the loaded page address.

Link: https://patch.msgid.link/20260512141614.1759430-1-vdonnefort@xxxxxxxxxx
Fixes: 635923081c79 ("tracing: load/unload page callbacks for simple_ring_buffer")
Signed-off-by: Vincent Donnefort <vdonnefort@xxxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
 kernel/trace/simple_ring_buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/simple_ring_buffer.c b/kernel/trace/simple_ring_buffer.c
index f731f14d0ff7..f4642f5adda3 100644
--- a/kernel/trace/simple_ring_buffer.c
+++ b/kernel/trace/simple_ring_buffer.c
@@ -430,7 +430,7 @@ int simple_ring_buffer_init_mm(struct simple_rb_per_cpu *cpu_buffer,
 
 	if (ret) {
 		for (i--; i >= 0; i--)
-			unload_page((void *)desc->page_va[i]);
+			unload_page(bpages[i].page);
 		unload_page(cpu_buffer->meta);
 
 		return ret;
-- 
2.53.0