Hello, During tests of multi channel concurency with AR9462 (rev 01) I hit such oops gdb point xmit.c +2378 [70874.035886] BUG: unable to handle kernel NULL pointer dereference at (null) [70874.043725] IP: [<ffffffffc071d589>] ath_tx_start+0x129/0x450 [ath9k] [70874.050173] PGD cb5e4067 PUD cae20067 PMD 0 [70874.054462] Oops: 0000 [#1] SMP [70874.057702] Modules linked in: iwlmvm(E) iwlwifi(E) ath10k_pci(OE) ath10k_core(OE) ath9k(E) ath9k_common(E) ath9k_hw(E) ath(E) mac80211(OE) cfg80211(OE) ftdi_sio(E) usbserial(E) ctr(E) ccm(E) arc4(E) dm_crypt(E) cmac(E) dell_wmi(E) sparse_keymap(E) intel_rapl(E) dell_laptop(E) iosf_mbi(E) dcdbas(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) i8k(E) coretemp(E) kvm_intel(E) kvm(E) rfcomm(E) bnep(E) crct10dif_pclmul(E) crc32_pclmul(E) snd_hda_codec_idt(E) ghash_clmulni_intel(E) snd_hda_codec_generic(E) uvcvideo(E) aesni_intel(E) videobuf2_vmalloc(E) aes_x86_64(E) videobuf2_memops(E) lrw(E) gf128mul(E) glue_helper(E) ablk_helper(E) videobuf2_core(E) cryptd(E) snd_hda_intel(E) v4l2_common(E) snd_hda_controller(E) videodev(E) snd_hda_codec(E) snd_hda_core(E) snd_hwdep(E) joydev(E) serio_raw(E) snd_pcm(E) media(E) ath3k(E) snd_seq_midi(E) snd_seq_midi_event(E) btusb(E) btbcm(E) snd_rawmidi(E) btintel(E) bluetooth(E) snd_seq(E) lpc_ich(E) snd_seq_device(E) snd_timer(E) dell_smo8800(E) mac_hid(E) snd(E) mei_me(E) soundcore(E) shpchp(E) mei(E) binfmt_misc(E) parport_pc(E) ppdev(E) lp(E) parport(E) nouveau(E) mxm_wmi(E) i915(E) ttm(E) i2c_algo_bit(E) drm_kms_helper(E) e1000e(E) sdhci_pci(E) ahci(E) ptp(E) sdhci(E) psmouse(E) libahci(E) drm(E) wmi(E) pps_core(E) video(E) [last unloaded: cfg80211] [70874.172405] CPU: 5 PID: 12739 Comm: wpa_supplicant Tainted: G W OE 4.1.0-rc1master-2015-05-14-00-wl-ath+ #21 [70874.183090] Hardware name: Dell Inc. Latitude E6430/0H3MT5, BIOS A13 09/02/2013 [70874.190389] task: ffff8800c88dd100 ti: ffff8800c9df4000 task.ti: ffff8800c9df4000 [70874.197863] RIP: 0010:[<ffffffffc071d589>] [<ffffffffc071d589>] ath_tx_start+0x129/0x450 [ath9k] [70874.206734] RSP: 0018:ffff8800c9df75a8 EFLAGS: 00010216 [70874.212037] RAX: 0000000000000000 RBX: ffff8800cabc93e0 RCX: 0000000000000038 [70874.219164] RDX: ffff880222846988 RSI: ffff8800cabca6f0 RDI: 0000000000000000 [70874.226290] RBP: ffff8800c9df7628 R08: 0000000000000000 R09: 0000000000000000 [70874.233414] R10: ffff88020a2a4d44 R11: 0000000000000000 R12: ffff8802228453b8 [70874.240541] R13: ffff8800c9df7658 R14: ffff8800c9ae6000 R15: ffff880222846ce8 [70874.247667] FS: 00007fe30e448740(0000) GS:ffff88022e340000(0000) knlGS:0000000000000000 [70874.255747] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [70874.261485] CR2: 0000000000000000 CR3: 00000000b7529000 CR4: 00000000001407e0 [70874.268610] Stack: [70874.270616] ffff8800c9df7698 ffff880000000000 ffff88020a2a4d44 ffffffff00000000 [70874.278042] ffff8800cabca710 0000000000000000 ffff8802228468b0 ffff8800cabca6f0 [70874.285465] 0000000000000000 ffff880209bb1700 ffff8800c9df7638 ffff8800ca9a4018 [70874.292894] Call Trace: [70874.295336] [<ffffffffc071492f>] ath9k_tx+0xaf/0x2b0 [ath9k] [70874.301084] [<ffffffffc095ff7a>] ? rate_control_get_rate+0x14a/0x150 [mac80211] [70874.308478] [<ffffffffc096fd64>] ieee80211_tx_frags+0x104/0x410 [mac80211] [70874.315435] [<ffffffffc09700ee>] __ieee80211_tx+0x7e/0x180 [mac80211] [70874.321961] [<ffffffffc097347e>] ieee80211_tx+0xbe/0xf0 [mac80211] [70874.328224] [<ffffffffc09736b1>] ieee80211_xmit+0xa1/0x100 [mac80211] [70874.334748] [<ffffffffc0974b7a>] __ieee80211_tx_skb_tid_band+0x6a/0x80 [mac80211] [70874.342314] [<ffffffffc09795d6>] ieee80211_send_auth+0x166/0x1d0 [mac80211] [70874.349361] [<ffffffffc0994b48>] ieee80211_probe_auth+0x138/0x3d0 [mac80211] [70874.356493] [<ffffffffc099b4e5>] ieee80211_mgd_auth+0x295/0x310 [mac80211] [70874.363452] [<ffffffffc09629f8>] ieee80211_auth+0x18/0x20 [mac80211] [70874.369894] [<ffffffffc08e4bc3>] cfg80211_mlme_auth+0xf3/0x1c0 [cfg80211] [70874.376761] [<ffffffff81206a76>] ? do_select+0x6d6/0x790 [70874.382155] [<ffffffffc08cd30d>] nl80211_authenticate+0x2ad/0x310 [cfg80211] [70874.389283] [<ffffffff816e9bd5>] genl_family_rcv_msg+0x1a5/0x3d0 [70874.395368] [<ffffffff81206100>] ? poll_select_copy_remaining+0x130/0x130 [70874.402233] [<ffffffff816e9e00>] ? genl_family_rcv_msg+0x3d0/0x3d0 [70874.408491] [<ffffffff816e9e91>] genl_rcv_msg+0x91/0xd0 [70874.413795] [<ffffffff816e9131>] netlink_rcv_skb+0xc1/0xe0 [70874.419359] [<ffffffff816e97dc>] genl_rcv+0x2c/0x40 [70874.424315] [<ffffffff816e87d6>] netlink_unicast+0xf6/0x200 [70874.429966] [<ffffffff816e8cf4>] netlink_sendmsg+0x414/0x670 [70874.435705] [<ffffffff8169b63d>] sock_sendmsg+0x3d/0x50 [70874.441010] [<ffffffff8169bfee>] ___sys_sendmsg+0x29e/0x2c0 [70874.446663] [<ffffffff81231616>] ? fsnotify+0x306/0x490 [70874.451967] [<ffffffff8169b354>] ? SYSC_recvfrom+0xd4/0x160 [70874.457617] [<ffffffff8169c912>] __sys_sendmsg+0x42/0x80 [70874.463006] [<ffffffff8169c962>] SyS_sendmsg+0x12/0x20 [70874.468224] [<ffffffff817c7232>] system_call_fastpath+0x16/0x75 [70874.474222] Code: 84 bd 02 00 00 41 8b 86 9c 00 00 00 83 e0 0f 48 8d 0c c5 00 00 00 00 48 c1 e0 07 48 29 c8 4c 8d 7c 02 18 49 8b 47 48 49 8b 75 00 <48> 39 30 0f 85 fa 02 00 00 41 f6 46 28 08 74 08 49 8b 47 48 c6 [70874.493638] RIP [<ffffffffc071d589>] ath_tx_start+0x129/0x450 [ath9k] [70874.500166] RSP <ffff8800c9df75a8> [70874.503648] CR2: 0000000000000000 [70874.511427] ---[ end trace abdb98269f393a51 ]--- [70874.516037] Kernel panic - not syncing: Fatal exception in interrupt [70874.522420] Kernel Offset: disabled [70874.525902] drm_kms_helper: panic occurred, switching back to text console BR Janusz -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
