| From | alexander.levin@verizon ... | Subject | [PATCH AUTOSEL for 4.14 20/64] dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0 | Date | Sat, 2 Dec 2017 15:51:22 +0000 |
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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> --- lib/dynamic_debug.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index da796e2dc4f5..c7c96bc7654a 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -360,6 +360,10 @@ static int ddebug_parse_query(char *words[], int nwords, 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, -- 2.11.0
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