6.12-stable review patch. If anyone has any objections, please let me know.
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From: Alexander Gordeev agordeev@linux.ibm.com
[ Upstream commit 5fa49dd8e521a42379e5e41fcf2c92edaaec0a8b ]
DEFINE_IPL_ATTR_STR_RW() macro produces "unsigned 'len' is never less than zero." warning when sys_vmcmd_on_*_store() callbacks are defined.
Reported-by: kernel test robot lkp@intel.com Closes: https://lore.kernel.org/oe-kbuild-all/202412081614.5uel8F6W-lkp@intel.com/ Fixes: 247576bf624a ("s390/ipl: Do not accept z/VM CP diag X'008' cmds longer than max length") Reviewed-by: Heiko Carstens hca@linux.ibm.com Signed-off-by: Alexander Gordeev agordeev@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/s390/kernel/ipl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index f17bb7bf9392..5fa203f4bc6b 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -270,7 +270,7 @@ static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ if (len >= sizeof(_value)) \ return -E2BIG; \ len = strscpy(_value, buf, sizeof(_value)); \ - if (len < 0) \ + if ((ssize_t)len < 0) \ return len; \ strim(_value); \ return len; \