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thermal/lib: Fix memory leak on error in thermal_genl_auto()

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The function thermal_genl_auto() does not free the allocated message
in the error path. Fix that by putting a out label and jump to it
which will free the message instead of directly returning an error.

Fixes: 47c4b0de08 ("tools/lib/thermal: Add a thermal library")
Reported-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://patch.msgid.link/20241024105938.1095358-1-daniel.lezcano@linaro.org
[ rjw: Fixed up the !msg error path, added Fixes tag ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Daniel Lezcano 2024-10-24 12:59:38 +02:00 committed by Rafael J. Wysocki
parent 54219ee4ea
commit 7569406e95
1 changed files with 7 additions and 4 deletions
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11
tools/lib/thermal/commands.c
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@ -375,6 +375,7 @@ static thermal_error_t thermal_genl_auto(struct thermal_handler *th, cmd_cb_t cm
struct cmd_param *param,
int cmd, int flags, void *arg)
{
thermal_error_t ret = THERMAL_ERROR;
struct nl_msg *msg;
void *hdr;
@ -385,17 +386,19 @@ static thermal_error_t thermal_genl_auto(struct thermal_handler *th, cmd_cb_t cm
hdr = genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, thermal_cmd_ops.o_id,
0, flags, cmd, THERMAL_GENL_VERSION);
if (!hdr)
return THERMAL_ERROR;
goto out;
if (cmd_cb && cmd_cb(msg, param))
return THERMAL_ERROR;
goto out;
if (nl_send_msg(th->sk_cmd, th->cb_cmd, msg, genl_handle_msg, arg))
return THERMAL_ERROR;
goto out;
ret = THERMAL_SUCCESS;
out:
nlmsg_free(msg);
return THERMAL_SUCCESS;
return ret;
}
thermal_error_t thermal_cmd_get_tz(struct thermal_handler *th, struct thermal_zone **tz)