lkml.org 
[lkml]   [2022]   [Jan]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH AUTOSEL 5.15 138/188] iwlwifi: fix leaks/bad data after failed firmware load
Date
From: Johannes Berg <johannes.berg@intel.com>

[ Upstream commit ab07506b0454bea606095951e19e72c282bfbb42 ]

If firmware load fails after having loaded some parts of the
firmware, e.g. the IML image, then this would leak. For the
host command list we'd end up running into a WARN on the next
attempt to load another firmware image.

Fix this by calling iwl_dealloc_ucode() on failures, and make
that also clear the data so we start fresh on the next round.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211210110539.1f742f0eb58a.I1315f22f6aa632d94ae2069f85e1bca5e734dce0@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/iwlwifi/iwl-drv.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
index 94553f272d377..2206f66f69940 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
@@ -131,6 +131,9 @@ static void iwl_dealloc_ucode(struct iwl_drv *drv)

for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
iwl_free_fw_img(drv, drv->fw.img + i);
+
+ /* clear the data for the aborted load case */
+ memset(&drv->fw, 0, sizeof(drv->fw));
}

static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
@@ -1333,6 +1336,7 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
int i;
bool load_module = false;
bool usniffer_images = false;
+ bool failure = true;

fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
fw->ucode_capa.standard_phy_calibration_size =
@@ -1602,6 +1606,7 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
op->name, err);
#endif
}
+ failure = false;
goto free;

try_again:
@@ -1617,6 +1622,9 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
complete(&drv->request_firmware_complete);
device_release_driver(drv->trans->dev);
free:
+ if (failure)
+ iwl_dealloc_ucode(drv);
+
if (pieces) {
for (i = 0; i < ARRAY_SIZE(pieces->img); i++)
kfree(pieces->img[i].sec);
--
2.34.1
\
 
 \ /
  Last update: 2022-01-18 04:12    [W:0.435 / U:0.544 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site