Patch "tools: bpftool: Remove invalid \' json escape" has been added to the 6.3-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

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

    tools: bpftool: Remove invalid \' json escape

to the 6.3-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:
     tools-bpftool-remove-invalid-json-escape.patch
and it can be found in the queue-6.3 subdirectory.

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



commit 0b0c9cba90c261eaf36681e7b1ebd12779aaa0ae
Author: Luis Gerhorst <gerhorst@xxxxxxxxx>
Date:   Mon Feb 27 16:08:54 2023 +0100

    tools: bpftool: Remove invalid \' json escape
    
    [ Upstream commit c679bbd611c08b0559ffae079330bc4e5574696a ]
    
    RFC8259 ("The JavaScript Object Notation (JSON) Data Interchange
    Format") only specifies \", \\, \/, \b, \f, \n, \r, and \r as valid
    two-character escape sequences. This does not include \', which is not
    required in JSON because it exclusively uses double quotes as string
    separators.
    
    Solidus (/) may be escaped, but does not have to. Only reverse
    solidus (\), double quotes ("), and the control characters have to be
    escaped. Therefore, with this fix, bpftool correctly supports all valid
    two-character escape sequences (but still does not support characters
    that require multi-character escape sequences).
    
    Witout this fix, attempting to load a JSON file generated by bpftool
    using Python 3.10.6's default json.load() may fail with the error
    "Invalid \escape" if the file contains the invalid escaped single
    quote (\').
    
    Fixes: b66e907cfee2 ("tools: bpftool: copy JSON writer from iproute2 repository")
    Signed-off-by: Luis Gerhorst <gerhorst@xxxxxxxxx>
    Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
    Reviewed-by: Quentin Monnet <quentin@xxxxxxxxxxxxx>
    Link: https://lore.kernel.org/bpf/20230227150853.16863-1-gerhorst@xxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/tools/bpf/bpftool/json_writer.c b/tools/bpf/bpftool/json_writer.c
index 7fea83bedf488..bca5dd0a59e34 100644
--- a/tools/bpf/bpftool/json_writer.c
+++ b/tools/bpf/bpftool/json_writer.c
@@ -80,9 +80,6 @@ static void jsonw_puts(json_writer_t *self, const char *str)
 		case '"':
 			fputs("\\\"", self->out);
 			break;
-		case '\'':
-			fputs("\\\'", self->out);
-			break;
 		default:
 			putc(*str, self->out);
 		}