linux.git/drivers/net/wireless/intel, branch v6.16

Merge tag 'iwlwifi-fixes-2025-07-15' of https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

2025-07-15T11:07:43+00:00

Miri Korenblit says:
====================
iwlwifi-fixes

- missing unlock in error path
- Avoid FW assert on bad command values
- fix kernel panic due to incorrect index calculation
====================

Signed-off-by: Johannes Berg

wifi: iwlwifi: Fix botched indexing conversion

2025-07-15T09:13:40+00:00

The conversion from compiler assisted indexing to manual
indexing wasn't done correctly. The array is still made
up of __le16 elements so multiplying the outer index by
the element size is not what we want. Fix it up.

This causes the kernel to oops when trying to transfer any
significant amount of data over wifi:

BUG: unable to handle page fault for address: ffffc900009f5282
PGD 100000067 P4D 100000067 PUD 1000fb067 PMD 102e82067 PTE 0
Oops: Oops: 0002 [#1] SMP
CPU: 1 UID: 0 PID: 99 Comm: kworker/u8:3 Not tainted 6.15.0-rc2-cl-bisect3-00604-g6204d5130a64-dirty #78 PREEMPT
Hardware name: Dell Inc. Latitude E5400                  /0D695C, BIOS A19 06/13/2013
Workqueue: events_unbound cfg80211_wiphy_work [cfg80211]
RIP: 0010:iwl_trans_pcie_tx+0x4dd/0xe60 [iwlwifi]
Code: 00 00 66 81 fa ff 0f 0f 87 42 09 00 00 3d ff 00 00 00 0f 8f 37 09 00 00 41 c1 e0 0c 41 09 d0 48 8d 14 b6 48 c1 e2 07 48 01 ca <66> 44 89 04 57 48 8d 0c 12 83 f8 3f 0f 8e 84 01 00 00 41 8b 85 80
RSP: 0018:ffffc900001c3b50 EFLAGS: 00010206
RAX: 00000000000000c1 RBX: ffff88810b180028 RCX: 00000000000000c1
RDX: 0000000000002141 RSI: 000000000000000d RDI: ffffc900009f1000
RBP: 0000000000000002 R08: 0000000000000025 R09: ffffffffa050fa60
R10: 00000000fbdbf4bc R11: 0000000000000082 R12: ffff88810e5ade40
R13: ffff88810af81588 R14: 000000000000001a R15: ffff888100dfe0c8
FS:  0000000000000000(0000) GS:ffff8881998c3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc900009f5282 CR3: 0000000001e39000 CR4: 00000000000426f0
Call Trace:
 
 ? rcu_is_watching+0xd/0x40
 ? __iwl_dbg+0xb1/0xe0 [iwlwifi]
 iwlagn_tx_skb+0x8e2/0xcb0 [iwldvm]
 iwlagn_mac_tx+0x18/0x30 [iwldvm]
 ieee80211_handle_wake_tx_queue+0x6c/0xc0 [mac80211]
 ieee80211_agg_start_txq+0x140/0x2e0 [mac80211]
 ieee80211_agg_tx_operational+0x126/0x210 [mac80211]
 ieee80211_process_addba_resp+0x27b/0x2a0 [mac80211]
 ieee80211_iface_work+0x4bd/0x4d0 [mac80211]
 ? _raw_spin_unlock_irq+0x1f/0x40
 cfg80211_wiphy_work+0x117/0x1f0 [cfg80211]
 process_one_work+0x1ee/0x570
 worker_thread+0x1c5/0x3b0
 ? bh_worker+0x240/0x240
 kthread+0x110/0x220
 ? kthread_queue_delayed_work+0x90/0x90
 ret_from_fork+0x28/0x40
 ? kthread_queue_delayed_work+0x90/0x90
 ret_from_fork_asm+0x11/0x20
 
Modules linked in: ctr aes_generic ccm sch_fq_codel bnep xt_tcpudp xt_multiport xt_state iptable_filter iptable_nat nf_nat nf_conntrack nf_defrag_ipv4 ip_tables x_tables btusb btrtl btintel btbcm bluetooth ecdh_generic ecc libaes hid_generic usbhid hid binfmt_misc joydev mousedev snd_hda_codec_hdmi iwldvm snd_hda_codec_idt snd_hda_codec_generic mac80211 coretemp iTCO_wdt watchdog kvm_intel i2c_dev snd_hda_intel libarc4 kvm snd_intel_dspcfg sdhci_pci sdhci_uhs2 snd_hda_codec iwlwifi sdhci irqbypass cqhci snd_hwdep snd_hda_core cfg80211 firewire_ohci mmc_core psmouse snd_pcm i2c_i801 firewire_core pcspkr led_class uhci_hcd i2c_smbus tg3 crc_itu_t iosf_mbi snd_timer rfkill libphy ehci_pci snd ehci_hcd lpc_ich mfd_core usbcore video intel_agp usb_common soundcore intel_gtt evdev agpgart parport_pc wmi parport backlight
CR2: ffffc900009f5282
---[ end trace 0000000000000000 ]---
RIP: 0010:iwl_trans_pcie_tx+0x4dd/0xe60 [iwlwifi]
Code: 00 00 66 81 fa ff 0f 0f 87 42 09 00 00 3d ff 00 00 00 0f 8f 37 09 00 00 41 c1 e0 0c 41 09 d0 48 8d 14 b6 48 c1 e2 07 48 01 ca <66> 44 89 04 57 48 8d 0c 12 83 f8 3f 0f 8e 84 01 00 00 41 8b 85 80
RSP: 0018:ffffc900001c3b50 EFLAGS: 00010206
RAX: 00000000000000c1 RBX: ffff88810b180028 RCX: 00000000000000c1
RDX: 0000000000002141 RSI: 000000000000000d RDI: ffffc900009f1000
RBP: 0000000000000002 R08: 0000000000000025 R09: ffffffffa050fa60
R10: 00000000fbdbf4bc R11: 0000000000000082 R12: ffff88810e5ade40
R13: ffff88810af81588 R14: 000000000000001a R15: ffff888100dfe0c8
FS:  0000000000000000(0000) GS:ffff8881998c3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc900009f5282 CR3: 0000000001e39000 CR4: 00000000000426f0
Kernel panic - not syncing: Fatal exception in interrupt
Kernel Offset: disabled
---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---

Cc: Miri Korenblit 
Fixes: 6204d5130a64 ("wifi: iwlwifi: use bc entries instead of bc table also for pre-ax210")
Signed-off-by: Ville Syrjälä 
Link: https://patch.msgid.link/20250711205744.28723-1-ville.syrjala@linux.intel.com
Signed-off-by: Miri Korenblit

wifi: iwlwifi: mask reserved bits in chan_state_active_bitmap

2025-07-09T04:56:18+00:00

Mask the reserved bits as firmware will assert if reserved bits are set.

Fixes: ef7ddf4e2f94 ("wifi: iwlwifi: Add support for LARI_CONFIG_CHANGE_CMD v12")
Signed-off-by: Pagadala Yesu Anjaneyulu 
Signed-off-by: Miri Korenblit 
Link: https://patch.msgid.link/20250709065608.7a72c70bdc9d.Ic9be0a3fc3aabde0c4b88568f3bb7b76e375f8d4@changeid

wifi: iwlwifi: pcie: fix locking on invalid TOP reset

2025-06-29T11:01:29+00:00

If a TOP reset were to ever be erroneously requested on HW
prior to SC, the code warns and returns, but doesn't take
care to unlock the mutex in this case. Fix that.

Fixes: 909e1be65462 ("wifi: iwlwifi: implement TOP reset")
Reported-by: kernel test robot 
Reported-by: Dan Carpenter 
Closes: https://lore.kernel.org/r/202506100707.WAnP5ePA-lkp@intel.com/
Signed-off-by: Johannes Berg 
Signed-off-by: Miri Korenblit 
Link: https://patch.msgid.link/20250625204210.19a0378838b1.I6bdc58d4996e995e1358ad94d4cc5017f3abf47b@changeid
Signed-off-by: Miri Korenblit

Merge tag 'iwlwifi-fixes-2025-06-25' of https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

2025-06-25T08:20:03+00:00

Miri Korenblit says:
====================
iwlwifi-fixes: fix failure in interface up
====================

Signed-off-by: Johannes Berg

wifi: iwlwifi: mvm: assume '1' as the default mac_config_cmd version

2025-06-24T08:34:26+00:00

Unfortunately, FWs of some devices don't have the version of the
iwl_mac_config_cmd defined in the TLVs. We send 0 as the 'def argument
to  iwl_fw_lookup_cmd_ver, so for such FWs, the return value will be 0,
leading to a warning, and to not sending the command.

Fix this by assuming that the default version is 1.

Fixes: 83f3ac2848b4 ("wifi: iwlwifi: Fix incorrect logic on cmd_ver range checking")
Signed-off-by: Miri Korenblit 
Link: https://patch.msgid.link/20250624071427.2662621-1-miriam.rachel.korenblit@intel.com

wifi: iwlegacy: work around excessive stack usage on clang/kasan

2025-06-24T07:04:42+00:00

In some rare randconfig builds, I seem to trigger a bug in clang where
it unrolls a loop but then runs out of registers, which then get
spilled to the stack:

net/wireless/intel/iwlegacy/4965-rs.c:2262:1: error: stack frame size (1696) exceeds limit (1280) in 'il4965_rs_rate_init' [-Werror,-Wframe-larger-than]

This seems to be the same one I saw in the omapdrm driver, and there is
an easy workaround by not inlining the il4965_rs_rate_scale_clear_win
function.

Link: https://github.com/llvm/llvm-project/issues/143908
Signed-off-by: Arnd Bergmann 
Acked-by: Stanislaw Gruszka 
Link: https://patch.msgid.link/20250620113946.3987160-1-arnd@kernel.org
Signed-off-by: Johannes Berg

wifi: iwlwifi: Fix incorrect logic on cmd_ver range checking

2025-06-18T07:49:40+00:00

The current cmd_ver range checking on cmd_ver < 1 && cmd_ver > 3 can
never be true because the logical operator && is being used, cmd_ver
can never be less than 1 and also greater than 3. Fix this by using
the logical || operator.

Fixes: df6146a0296e ("wifi: iwlwifi: Add a new version for mac config command")

Signed-off-by: Colin Ian King 
Link: https://patch.msgid.link/20250522121703.2766764-1-colin.i.king@gmail.com
Signed-off-by: Miri Korenblit

wifi: iwlwifi: dvm: restore n_no_reclaim_cmds setting

2025-06-18T07:42:06+00:00

Apparently I accidentally removed this setting in my transport
configuration rework, leading to an endless stream of warnings
from the PCIe code when relevant notifications are received by
the driver from firmware. Restore it.

Reported-by: Woody Suwalski 
Closes: https://lore.kernel.org/r/e8c45d32-6129-8a5e-af80-ccc42aaf200b@gmail.com/
Fixes: 08e77d5edf70 ("wifi: iwlwifi: rework transport configuration")
Signed-off-by: Johannes Berg 
Link: https://patch.msgid.link/20250616134902.222342908ca4.I47a551c86cbc0e9de4f980ca2fd0d67bf4052e50@changeid
Signed-off-by: Miri Korenblit

wifi: iwlwifi: cfg: Limit cb_size to valid range

2025-06-18T07:40:52+00:00

on arm64 defconfig build failed with gcc-8:

drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info.c:208:3:
include/linux/bitfield.h:195:3: error: call to '__field_overflow'
declared with attribute error: value doesn't fit into mask
   __field_overflow();     \
   ^~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:215:2: note: in expansion of macro '____MAKE_OP'
  ____MAKE_OP(u##size,u##size,,)
  ^~~~~~~~~~~
include/linux/bitfield.h:218:1: note: in expansion of macro '__MAKE_OP'
 __MAKE_OP(32)

Limit cb_size to valid range to fix it.

Signed-off-by: Pei Xiao 
Link: https://patch.msgid.link/7b373a4426070d50b5afb3269fd116c18ce3aea8.1748332709.git.xiaopei01@kylinos.cn
Signed-off-by: Miri Korenblit