tracing: Avoid possible signed 64-bit truncation

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[ Upstream commit 00f13e28a9 ]

64-bit truncation to 32-bit can result in the sign of the truncated
value changing. The cmp_mod_entry is used in bsearch and so the
truncation could result in an invalid search order. This would only
happen were the addresses more than 2GB apart and so unlikely, but
let's fix the potentially broken compare anyway.

Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/20260108002625.333331-1-irogers@google.com
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Ian Rogers 2026-01-07 16:26:25 -08:00 • committed by Greg Kroah-Hartman

parent 6dd87f6afe

commit 98bf5bc8cb

1 changed files with 4 additions and 4 deletions

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kernel/trace/trace.c

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