Patch "tracing/user_events: Fix call print_fmt leak" has been added to the 6.1-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    tracing/user_events: Fix call print_fmt leak

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     tracing-user_events-fix-call-print_fmt-leak.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 76dc624dce562524a4820d9a91d4f162a6055e87
Author: Beau Belgrave <beaub@xxxxxxxxxxxxxxxxxxx>
Date:   Wed Nov 23 10:32:48 2022 -0800

    tracing/user_events: Fix call print_fmt leak
    
    [ Upstream commit 4bded7af8b9af6e97514b0521004f90267905aef ]
    
    If user_event_trace_register() fails within user_event_parse() the
    call's print_fmt member is not freed. Add kfree call to fix this.
    
    Link: https://lkml.kernel.org/r/20221123183248.554-1-beaub@xxxxxxxxxxxxxxxxxxx
    
    Fixes: aa3b2b4c6692 ("user_events: Add print_fmt generation support for basic types")
    Signed-off-by: Beau Belgrave <beaub@xxxxxxxxxxxxxxxxxxx>
    Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/kernel/trace/trace_events_user.c b/kernel/trace/trace_events_user.c
index 539b08ae7020..9cb53182bb31 100644
--- a/kernel/trace/trace_events_user.c
+++ b/kernel/trace/trace_events_user.c
@@ -1359,6 +1359,7 @@ static int user_event_parse(struct user_event_group *group, char *name,
 put_user:
 	user_event_destroy_fields(user);
 	user_event_destroy_validators(user);
+	kfree(user->call.print_fmt);
 	kfree(user);
 	return ret;
 }