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ftrace: Fix NULL memory allocation check 

The check for a failed memory location is incorrectly checking
the wrong level of pointer indirection by checking !filter_hash
rather than !*filter_hash.  Fix this.

Cc: asami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20250422221335.89896-1-colin.i.king@gmail.com
Fixes: 0ae6b8ce20 ("ftrace: Fix accounting of subop hashes")
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Colin Ian King 2025-04-22 23:13:35 +01:00 committed by Steven Rostedt (Google)
parent f5178c41bb
commit 3c1d9cfa84
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/ftrace.c
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@ -3436,7 +3436,7 @@ static int add_next_hash(struct ftrace_hash **filter_hash, struct ftrace_hash **
/* Copy the subops hash */
*filter_hash = alloc_and_copy_ftrace_hash(size_bits, subops_hash->filter_hash);
if (!filter_hash)
if (!*filter_hash)
return -ENOMEM;
/* Remove any notrace functions from the copy */
remove_hash(*filter_hash, subops_hash->notrace_hash);