| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 078/105] dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0 | Date | Fri, 15 Dec 2017 10:45:16 +0100 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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From: Randy Dunlap <rdunlap@infradead.org>
[ Upstream commit 1f3c790bd5989fcfec9e53ad8fa09f5b740c958f ]
line-range is supposed to treat "1-" as "1-endoffile", so handle the special case by setting last_lineno to UINT_MAX.
Fixes this error:
dynamic_debug:ddebug_parse_query: last-line:0 < 1st-line:1 dynamic_debug:ddebug_exec_query: query parse failed
Link: http://lkml.kernel.org/r/10a6a101-e2be-209f-1f41-54637824788e@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Jason Baron <jbaron@akamai.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- lib/dynamic_debug.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -353,6 +353,10 @@ static int ddebug_parse_query(char *word if (parse_lineno(last, &query->last_lineno) < 0) return -EINVAL; + /* special case for last lineno not specified */ + if (query->last_lineno == 0) + query->last_lineno = UINT_MAX; + if (query->last_lineno < query->first_lineno) { pr_err("last-line:%d < 1st-line:%d\n", query->last_lineno,
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