Hi, just a heads up to everyone that there are multiple regressions in v4.15-rc1. For starters hostapd (=AP mode) doesn't work because of: net: netlink: Update attr validation to require exact length for some types https://git.kernel.org/linus/28033ae4e0f5 Jouni fixed this already in hostapd but we also need a fix for kernel so that old hostapd versions continue to work: https://w1.fi/cgit/hostap/commit/?id=a2426829ce426de82d2fa47071ca41ea81c43307 Jouni also found a similar problem with mesh: https://w1.fi/cgit/hostap/commit/?id=963d3149abfcbab5b83f9023bc50321f777360d1 And Johannes already submitted a revert related to wpa_supplicant: [net] Revert "net: core: maybe return -EEXIST in __dev_alloc_name" diffmboxseries https://patchwork.ozlabs.org/patch/843863/ And with ath10k I'm now seeing this: [ 133.175508] WARNING: CPU: 2 PID: 1743 at net/mac80211/agg-tx.c:315 ___ieee80211_stop_tx_ba_session+0x1ab/0x280 [mac80211] [ 133.175660] Modules linked in: ctr ccm arc4 ath10k_pci(E) ath10k_core(E) ath(E) mac80211(E) cfg80211(E) snd_hda_codec_hdmi snd_hda_codec_idt snd_hda_codec_generic joydev btusb snd_hda_i [ 133.175924] CPU: 2 PID: 1743 Comm: hostapd Tainted: G E 4.15.0-rc1-wt-ath+ #553 [ 133.175960] Hardware name: Hewlett-Packard HP ProBook 6540b/1722, BIOS 68CDD Ver. F.04 01/27/2010 [ 133.175996] task: ffff9a1b9b6e1cc0 task.stack: ffffb13800348000 [ 133.176072] RIP: 0010:___ieee80211_stop_tx_ba_session+0x1ab/0x280 [mac80211] [ 133.176111] RSP: 0018:ffffb1380034b8f8 EFLAGS: 00210246 [ 133.176151] RAX: 0000000000000000 RBX: ffff9a1b93e85698 RCX: 0000000000000000 [ 133.176187] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000200246 [ 133.176223] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 [ 133.176259] R10: 0000000000000000 R11: 0000000000000012 R12: 0000000000000000 [ 133.176295] R13: 0000000000000003 R14: 0000000000000000 R15: ffff9a1b93060dc0 [ 133.176332] FS: 0000000000000000(0000) GS:ffff9a1bb2600000(0063) knlGS:00000000f7b69b00 [ 133.176368] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 133.181034] CR2: 00000000f7dd56c0 CR3: 0000000119076000 CR4: 00000000000006e0 [ 133.181068] Call Trace: [ 133.181191] ieee80211_sta_tear_down_BA_sessions+0x6d/0x140 [mac80211] [ 133.181264] __sta_info_destroy_part1+0x5e/0x9d0 [mac80211] [ 133.181336] __sta_info_flush+0x129/0x190 [mac80211] [ 133.181421] ieee80211_stop_ap+0x14c/0x5c0 [mac80211] [ 133.181516] __cfg80211_stop_ap+0xdd/0x620 [cfg80211] [ 133.181591] cfg80211_stop_ap+0x3a/0x50 [cfg80211] [ 133.181631] genl_family_rcv_msg+0x1b9/0x370 [ 133.181680] genl_rcv_msg+0x47/0x90 [ 133.181712] ? genl_rcv+0x15/0x40 [ 133.181744] ? genl_family_rcv_msg+0x370/0x370 [ 133.181777] netlink_rcv_skb+0xd2/0xf0 [ 133.181816] genl_rcv+0x24/0x40 [ 133.181850] netlink_unicast+0x1c0/0x2e0 [ 133.181887] netlink_sendmsg+0x2ac/0x390 [ 133.181931] sock_sendmsg+0x30/0x40 [ 133.181965] ___sys_sendmsg+0x2a6/0x2b0 [ 133.182003] ? trace_hardirqs_on_caller+0x124/0x190 [ 133.182042] ? trace_hardirqs_on_caller+0x124/0x190 [ 133.182083] ? free_debug_processing+0x271/0x380 [ 133.182122] ? __lock_acquire+0x52d/0x1120 [ 133.182159] ? __lock_acquire+0x52d/0x1120 [ 133.182200] ? __sys_sendmsg+0x41/0x70 [ 133.182231] __sys_sendmsg+0x41/0x70 [ 133.182278] compat_SyS_socketcall+0x2db/0x480 [ 133.182311] ? task_work_run+0x6a/0xb0 [ 133.182366] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 133.182406] do_fast_syscall_32+0x9c/0x300 [ 133.182443] entry_SYSENTER_compat+0x51/0x60 [ 133.182493] Code: 5d 41 5e 41 5f c3 c7 04 24 03 00 00 00 e9 dc fe ff ff 48 8d bf 58 09 00 00 be ff ff ff ff e8 dd 36 90 e7 85 c0 0f 85 a8 fe ff ff <0f> ff e9 a1 fe ff ff 4c 89 f7 e8 76 [ 133.182798] ---[ end trace fb3fb3b808e4ce1b ]--- -- Kalle Valo
