kernel/git/next/linux-next.git/drivers/net/wireless/virtual, branch master

Merge branch 'for-next' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next.git

2026-07-14T12:52:05+00:00

wifi: mac80211_hwsim: avoid NULL skb in stop queue drain

2026-07-07T08:16:20+00:00

mac80211_hwsim_stop() drops any frames left in data->pending. The loop currently checks skb_queue_empty() and then dequeues separately. That split is racy with TX status handling, which can remove a pending frame under the queue lock. If the last entry is removed after the empty check, skb_dequeue() returns NULL and the stop path passes that NULL skb to ieee80211_free_txskb(). Use skb_dequeue() as the loop condition instead. The dequeue result is the object that stop owns and frees, and a concurrent status completion that empties the queue simply makes the loop terminate. Fixes: bd18de517923 ("mac80211_hwsim: drop pending frames on stop") Assisted-by: Codex:gpt-5.5 Signed-off-by: Cen Zhang Link: https://patch.msgid.link/20260706161822.921039-1-zzzccc427@gmail.com Signed-off-by: Johannes Berg

wifi: mac80211_hwsim: clean up radio rhashtable on free

2026-07-07T08:16:11+00:00

mac80211_hwsim_free() removes each radio from hwsim_radios before calling mac80211_hwsim_del_radio(), but leaves the matching hwsim_radios_rht entry in place until the whole table is destroyed. Other radio removal paths remove both the list entry and data->rht while holding hwsim_radio_lock, before dropping the lock and deleting the radio. Do the same here so the all-radio cleanup path follows the same object visibility ordering. This helper is used while all radios are being torn down, either after callback users have already been unregistered or while module init is unwinding, so no hwsim_radios_generation update is needed. Assisted-by: Codex:gpt-5.5 Signed-off-by: Cen Zhang Link: https://patch.msgid.link/20260706123756.343818-1-zzzccc427@gmail.com Signed-off-by: Johannes Berg

wifi: mac80211_hwsim: avoid treating MCS as legacy rate index

2026-07-06T12:11:07+00:00

Injected HT and VHT rates store an MCS value in rates[0].idx rather than an index into the legacy bitrate table. hwsim nevertheless passes these rates to ieee80211_get_tx_rate() while generating monitor frames and timestamps. A crafted injected frame can therefore read beyond the bitrate table. If the resulting bitrate is zero, mac80211_hwsim_write_tsf() also divides by zero, as observed by syzbot. Use ieee80211_get_tx_rate() only for legacy rates. The existing fallback continues to supply a conservative bitrate where hwsim does not yet calculate MCS rates. Reported-by: syzbot+21629c14aa749636db9d@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=21629c14aa749636db9d Signed-off-by: Yousef Alhouseen Link: https://patch.msgid.link/20260628002537.23550-1-alhouseenyousef@gmail.com [drop wrong Fixes tag] Signed-off-by: Johannes Berg

wifi: mac80211_hwsim: clamp virtio RX length before skb_put

2026-07-06T12:11:06+00:00

hwsim_virtio_rx_work() passes the virtqueue used-ring length reported by the device straight to skb_put() on a fixed-size receive skb. A backend reporting a length larger than the skb tailroom drives skb_put() past the buffer end and hits skb_over_panic() -- a host-triggerable guest panic (denial of service). Clamp the length to the skb's available room before skb_put(). A conforming device never reports more than the posted buffer size, so valid frames are unaffected; a truncated over-report then fails the length/header checks in hwsim_virtio_handle_cmd() and is dropped, so truncating rather than dropping here cannot be turned into a parsing problem. Fixes: 5d44fe7c9808 ("mac80211_hwsim: add frame transmission support over virtio") Signed-off-by: Bryam Vargas Link: https://patch.msgid.link/20260620-b4-disp-474bee37-v1-1-1a4d37f3e2d4@proton.me Signed-off-by: Johannes Berg

wifi: mac80211_hwsim: claim DBE capability

2026-06-03T12:11:59+00:00

Claim DBE capability in UHR MAC capabilities, hostapd will have to sort out the actual DBE capabilities based on the EHT capabilities. Link: https://patch.msgid.link/20260529102644.4db84674e8c2.I8731be8ea589c94ece5623e7e716cbbc03f50466@changeid Signed-off-by: Johannes Berg

wifi: Update UHR PHY capabilities to D1.4

2026-06-03T12:11:58+00:00

There are new capabilities in D1.4, and some reserved bits. Update the code accordingly. Link: https://patch.msgid.link/20260529102644.f146932b21e2.I12bad84157bf809fbe285b79420143b3c456d9d2@changeid Signed-off-by: Johannes Berg

wifi: cfg80211: remove 5/10 MHz channel support

2026-06-03T12:07:05+00:00

Remove WIPHY_FLAG_SUPPORTS_5_10_MHZ and 5/10 MHz channel width support. We contemplated this back in early 2023 and didn't do it yet, but nobody stepped up to maintain it. It's already _mostly_ dead code since it can really only be used for AP and maybe IBSS and monitor, but not on a client since there's no way to scan (and hasn't been in a very long time, if ever), so the only thing that ever could really happen with it was run syzbot and trip over assumptions in the code. Signed-off-by: Johannes Berg Reviewed-by: Lachlan Hodges Link: https://patch.msgid.link/20260529084502.080c5885f0b7.I77cc94485b523c3c006005b9233db13cd4e077b3@changeid Signed-off-by: Johannes Berg

wifi: mac80211_hwsim: add debug messages for link changes

2026-05-28T07:50:06+00:00

It's useful to be able to see the link addresses when the interface links change, so add some prints to hwsim for the vif link change callback. Signed-off-by: Johannes Berg Reviewed-by: Benjamin Berg Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20260527224151.b22a048abc7c.Ief2132c5c4bb67fa56e90eb8e7d59dfd9f2b9378@changeid Signed-off-by: Johannes Berg

wifi: mac80211_hwsim: modernise S1G channel list

2026-05-28T07:48:15+00:00

The current S1G channel list in mac80211_hwsim does not represent what S1G drivers would advertise that being 1MHz primaries. Also, include the NO_PRIMARY flag on the edgeband 1MHz primaries to emulate US operation such that it can also be tested. Signed-off-by: Lachlan Hodges Link: https://patch.msgid.link/20260527033828.183821-3-lachlan.hodges@morsemicro.com Signed-off-by: Johannes Berg