* [PATCH AUTOSEL 4.14 6/7] ata: libata-eh: Fix compilation warning in ata_eh_link_report()
[not found] <20231008005053.3768625-1-sashal@kernel.org>
@ 2023-10-08 0:50 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2023-10-08 0:50 UTC (permalink / raw
To: linux-kernel, stable
Cc: Damien Le Moal, Hannes Reinecke, Geert Uytterhoeven,
Martin K . Petersen, Sasha Levin, linux-ide
From: Damien Le Moal <dlemoal@kernel.org>
[ Upstream commit 49728bdc702391902a473b9393f1620eea32acb0 ]
The 6 bytes length of the tries_buf string in ata_eh_link_report() is
too short and results in a gcc compilation warning with W-!:
drivers/ata/libata-eh.c: In function ‘ata_eh_link_report’:
drivers/ata/libata-eh.c:2371:59: warning: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size 4 [-Wformat-truncation=]
2371 | snprintf(tries_buf, sizeof(tries_buf), " t%d",
| ^~
drivers/ata/libata-eh.c:2371:56: note: directive argument in the range [-2147483648, 4]
2371 | snprintf(tries_buf, sizeof(tries_buf), " t%d",
| ^~~~~~
drivers/ata/libata-eh.c:2371:17: note: ‘snprintf’ output between 4 and 14 bytes into a destination of size 6
2371 | snprintf(tries_buf, sizeof(tries_buf), " t%d",
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2372 | ap->eh_tries);
| ~~~~~~~~~~~~~
Avoid this warning by increasing the string size to 16B.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ata/libata-eh.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index cbe9af624a06f..bb47bbe20ef28 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2466,7 +2466,7 @@ static void ata_eh_link_report(struct ata_link *link)
struct ata_port *ap = link->ap;
struct ata_eh_context *ehc = &link->eh_context;
const char *frozen, *desc;
- char tries_buf[6] = "";
+ char tries_buf[16] = "";
int tag, nr_failed = 0;
if (ehc->i.flags & ATA_EHI_QUIET)
--
2.40.1
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2023-10-08 0:50 ` [PATCH AUTOSEL 4.14 6/7] ata: libata-eh: Fix compilation warning in ata_eh_link_report() Sasha Levin
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