liquidio: fix possible eeprom format string overflow

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gcc reports that the temporary buffer for computing the
string length may be too small here:

drivers/net/ethernet/cavium/liquidio/lio_ethtool.c: In function 'lio_get_eeprom_len':
/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c:345:21: error: 'sprintf' may write a terminating nul past the end of the destination [-Werror=format-overflow=]
  len = sprintf(buf, "boardname:%s serialnum:%s maj:%lld min:%lld\n",
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/cavium/liquidio/lio_ethtool.c:345:6: note: 'sprintf' output between 35 and 167 bytes into a destination of size 128
  len = sprintf(buf, "boardname:%s serialnum:%s maj:%lld min:%lld\n",

This extends it to 192 bytes, which is certainly enough. As far
as I could tell, there are no other constraints that require a specific
maximum size.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Arnd Bergmann 2017-07-14 14:07:05 +02:00 • committed by David S. Miller

parent c7673e4dea

commit 56c0da495a

1 changed files with 1 additions and 1 deletions

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drivers/net/ethernet/cavium/liquidio/lio_ethtool.c

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