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ring-buffer: Add cast to unsigned long addr passed to virt_to_page()

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The sub-buffer pages are held in an unsigned long array, and when it is
passed to virt_to_page() a cast is needed.

Link: https://lore.kernel.org/all/20240515124808.06279d04@canb.auug.org.au/
Link: https://lore.kernel.org/linux-trace-kernel/20240515010558.4abaefdd@rorschach.local.home

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Fixes: 117c39200d ("ring-buffer: Introducing ring-buffer mapping functions")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Google) 2024-05-15 01:05:58 -04:00
parent fe832be05a
commit b9c6820f02
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/ring_buffer.c
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@ -6283,7 +6283,7 @@ static int __rb_map_vma(struct ring_buffer_per_cpu *cpu_buffer,
}
while (p < nr_pages) {
struct page *page = virt_to_page(cpu_buffer->subbuf_ids[s]);
struct page *page = virt_to_page((void *)cpu_buffer->subbuf_ids[s]);
int off = 0;
if (WARN_ON_ONCE(s >= nr_subbufs)) {