On 25/06/23 03:04PM, Greg Kroah-Hartman wrote:
5.10-stable review patch. If anyone has any objections, please let me know.
From: Anton Protopopov a.s.protopopov@gmail.com
[ Upstream commit fd5fd538a1f4b34cee6823ba0ddda2f7a55aca96 ]
Return value of the validate_nla() function can be propagated all the way up to users of libbpf API. In case of error this libbpf version of validate_nla returns -1 which will be seen as -EPERM from user's point of view. Instead, return a more reasonable -EINVAL.
Fixes: bbf48c18ee0c ("libbpf: add error reporting in XDP") Suggested-by: Andrii Nakryiko andrii@kernel.org Signed-off-by: Anton Protopopov a.s.protopopov@gmail.com Signed-off-by: Andrii Nakryiko andrii@kernel.org Link: https://lore.kernel.org/bpf/20250510182011.2246631-1-a.s.protopopov@gmail.co... Signed-off-by: Sasha Levin sashal@kernel.org
tools/lib/bpf/nlattr.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/tools/lib/bpf/nlattr.c b/tools/lib/bpf/nlattr.c index 1a04299a2a604..35ad5a845a147 100644 --- a/tools/lib/bpf/nlattr.c +++ b/tools/lib/bpf/nlattr.c @@ -63,16 +63,16 @@ static int validate_nla(struct nlattr *nla, int maxtype, minlen = nla_attr_minlen[pt->type]; if (libbpf_nla_len(nla) < minlen)
return -1;
return -EINVAL;if (pt->maxlen && libbpf_nla_len(nla) > pt->maxlen)
return -1;
return -EINVAL;if (pt->type == LIBBPF_NLA_STRING) { char *data = libbpf_nla_data(nla); if (data[libbpf_nla_len(nla) - 1] != '\0')
return -1;
return -EINVAL;return 0; @@ -118,19 +118,18 @@ int libbpf_nla_parse(struct nlattr *tb[], int maxtype, struct nlattr *head, if (policy) { err = validate_nla(nla, maxtype, policy); if (err < 0)
goto errout;
return err;
if (tb[type])
if (tb[type]) { pr_warn("Attribute of type %#x found multiple times in message, " "previous attribute is being ignored.\n", type);}tb[type] = nla; }
- err = 0;
-errout:
- return err;
- return 0;
} /** -- 2.39.5
The patch ^ is ok. But the rest of the letter below is unrelated:
wer/supply/bq27xxx_battery_i2c.c b/drivers/power/supply/bq27xxx_battery_i2c.c index ba0d22d904295..868e95f0887e1 100644 --- a/drivers/power/supply/bq27xxx_battery_i2c.c +++ b/drivers/power/supply/bq27xxx_battery_i2c.c @@ -6,6 +6,7 @@
- Andrew F. Davis afd@ti.com
*/ +#include <linux/delay.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/module.h> @@ -31,6 +32,7 @@ static int bq27xxx_battery_i2c_read(struct bq27xxx_device_info *di, u8 reg, struct i2c_msg msg[2]; u8 data[2]; int ret;
- int retry = 0;
if (!client->adapter) return -ENODEV; @@ -47,7 +49,16 @@ static int bq27xxx_battery_i2c_read(struct bq27xxx_device_info *di, u8 reg, else msg[1].len = 2;
- ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
- do {
ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));if (ret == -EBUSY && ++retry < 3) {/* sleep 10 milliseconds when busy */usleep_range(10000, 11000);continue;}break;- } while (1);
- if (ret < 0) return ret;
2.39.5