diff options
| author | Johannes Berg | 2023-04-13 10:44:01 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-05-11 23:03:22 +0900 |
| commit | 8e5d05ca152717823b1e4fa8eda2233b195d7304 (patch) | |
| tree | 910b39b8deff2ecc44a46b4e100bf650a98d090e /drivers | |
| parent | 6aa401a654fdf2cbff7a0b6aead36069eecc1a15 (diff) | |
wifi: iwlwifi: debug: fix crash in __iwl_err()
[ Upstream commit 634c7b1bd08ca322537ab389f8cbd7bb543b5e45 ]
In __iwl_err(), if we rate-limit the message away, then
vaf.va is still NULL-initialized by the time we get to
the tracing code, which then crashes. When it doesn't
get rate-limited out, it's still wrong to reuse the old
args2 that was already printed, which is why we bother
making a copy in the first place.
Assign vaf.va properly to fix this.
Fixes: e5f1cc98cc1b ("iwlwifi: allow rate-limited error messages")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230413102635.e27134c6bcd4.Ib3894cd2ba7a5ad5e75912a7634f146ceaa569e2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-debug.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-debug.c b/drivers/net/wireless/intel/iwlwifi/iwl-debug.c index ae4c2a3d63d5..3a3c13a41fc6 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-debug.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-debug.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* - * Copyright (C) 2005-2011, 2021 Intel Corporation + * Copyright (C) 2005-2011, 2021-2022 Intel Corporation */ #include <linux/device.h> #include <linux/interrupt.h> @@ -57,6 +57,7 @@ void __iwl_err(struct device *dev, enum iwl_err_mode mode, const char *fmt, ...) default: break; } + vaf.va = &args; trace_iwlwifi_err(&vaf); va_end(args); } |