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| author | Luca Coelho <luciano.coelho@intel.com> | 2021-09-02 13:11:01 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-02 08:55:06 -0700 |
| commit | 75ae663d053bddf7c70a24cccf53c83ae03deff8 (patch) | |
| tree | de094724141ae1a0bc8aa6083d2c82930f6b54b4 /drivers | |
| parent | 90c90cda05aecf0f7c45f9f35384b31bba38455f (diff) | |
| download | linux-75ae663d053bddf7c70a24cccf53c83ae03deff8.tar.bz2 | |
iwlwifi: mvm: add rtnl_lock() in iwl_mvm_start_get_nvm()
Due to a rebase damage, we lost the rtnl_lock() when the patch was
sent out. This causes an RTNL imbalance and failed assertions, due to
missing RTNL protection, for instance:
RTNL: assertion failed at net/wireless/reg.c (4025)
WARNING: CPU: 60 PID: 1720 at net/wireless/reg.c:4025 regulatory_set_wiphy_regd_sync+0x7f/0x90 [cfg80211]
Call Trace:
iwl_mvm_init_mcc+0x170/0x190 [iwlmvm]
iwl_op_mode_mvm_start+0x824/0xa60 [iwlmvm]
iwl_opmode_register+0xd0/0x130 [iwlwifi]
init_module+0x23/0x1000 [iwlmvm]
Fix this by adding the missing rtnl_lock() back to the code.
Fixes: eb09ae93dabf ("iwlwifi: mvm: load regdomain at INIT stage")
Link: https://lore.kernel.org/lkml/CAHk-=wjB_zBwZ+WR9LOpvgjvaQn=cqryoKigod8QnZs=iYGEhA@mail.gmail.com/
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 6f60018feed1..77ea2d0a3091 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -686,6 +686,7 @@ static int iwl_mvm_start_get_nvm(struct iwl_mvm *mvm) { int ret; + rtnl_lock(); mutex_lock(&mvm->mutex); ret = iwl_run_init_mvm_ucode(mvm); |