Hello,
I've been hitting this NULL pointer deref with an rtl8188ee PCIE card. It happens 100% of the time when I bring up a WPA2-PSK AP with hostapd 2.4.
If I revert 33511b157bbcebaef853cc1811992b664a2e5862, everything seems to work properly.
Below is my hostapd.conf and the crash log. This is mainline 4.0.4 with no patches.
hostapd.conf
interface=wlp5s0
driver=nl80211
ssid=XXXX
wpa=2
wpa_passphrase=XXXXXXXXXXXX
wpa_key_mgmt=WPA-PSK
rsn_pairwise=CCMP
bridge=br1
ieee80211n=1
wmm_enabled=1
hw_mode=g
channel=1
[ 463.293026] ------------[ cut here ]------------
[ 463.297440] WARNING: CPU: 1 PID: 2439 at net/mac80211/driver-ops.h:12 ieee80211_bss_info_change_notify+0x179/0x1d0 [mac80211]()
[ 463.301487] wlp5s0: Failed check-sdata-in-driver check, flags: 0x0
[ 463.305375] Modules linked in: netconsole(E) pps_ldisc(E) pps_core(E) vhost_net(E) vhost(E) macvtap(E) macvlan(E) nf_conntrack_netlink(E) nfnetlink(E) bridge(E) stp(E) llc(E) xt_tcpudp(E) xt_conntrack(E) iptable_filter(E) ipt_MASQUERADE(E) nf_nat_masquerade_ipv4(E) iptable_nat(E) nf_conntrack_ipv4(E) nf_defrag_ipv4(E) nf_nat_ipv4(E) nf_nat(E) nf_conntrack(E) iptable_mangle(E) ip_tables(E) x_tables(E) ppdev(E) intel_rapl(E) iosf_mbi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) kvm(E) crct10dif_pclmul(E) crc32_pclmul(E) arc4(E) ghash_clmulni_intel(E) cryptd(E) serio_raw(E) rtl8188ee(E) ath10k_pci(E) rtl_pci(E) lpc_ich(E) ath10k_core(E) rtlwifi(E) ath(E) option(E) usb_wwan(E) usbserial(E) snd_hda_codec_hdmi(E) mac80211(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) cfg80211(E) snd_hda_intel(E) i915(E) snd_hda_controller(E) snd_hda_codec(E) snd_hwdep(E) drm_kms_helper(E) snd_pcm(E) snd_timer(E) drm(E) mei_me(E) snd(E) mei(E) soundcore(E) i2c_algo_bit(E)
shpchp(E) 8250_fintek(E) parport_pc(
E) qmi_wwan(E) cdc_wdm(E) video(E) usbnet(E) mac_hid(E) lp(E) parport(E) hid_generic(E) psmouse(E) usbhid(E) hid(E) pata_acpi(E) r8169(E) mii(E) configfs(E) [last unloaded: netconsole]
[ 463.329769] CPU: 1 PID: 2439 Comm: iwconfig Tainted: G E 4.0.4+ #1
[ 463.333358] Hardware name: BIOSTAR Group NM70I-1037U/NM70I-1037U, BIOS 4.6.5 06/05/2013
[ 463.337004] ffffffffc06d2d74 ffff8800d23d7b98 ffffffff817b2128 0000000000000001
[ 463.340784] ffff8800d23d7be8 ffff8800d23d7bd8 ffffffff81075cfa 0000000000000000
[ 463.344431] ffff8800d20328c0 0000000000000001 0000000000040000 ffff880119f506a0
[ 463.347806] Call Trace:
[ 463.351149] [<ffffffff817b2128>] dump_stack+0x45/0x57
[ 463.354493] [<ffffffff81075cfa>] warn_slowpath_common+0x8a/0xc0
[ 463.357609] [<ffffffff81075d76>] warn_slowpath_fmt+0x46/0x50
[ 463.360720] [<ffffffffc0655c69>] ieee80211_bss_info_change_notify+0x179/0x1d0 [mac80211]
[ 463.363858] [<ffffffffc066ab2d>] ieee80211_recalc_txpower+0x2d/0x40 [mac80211]
[ 463.366987] [<ffffffffc06726df>] ieee80211_set_tx_power+0x4f/0x1c0 [mac80211]
[ 463.369924] [<ffffffffc05d0458>] cfg80211_wext_siwtxpower+0xa8/0x1c0 [cfg80211]
[ 463.372832] [<ffffffff81796ac6>] ioctl_standard_call+0x56/0xe0
[ 463.375705] [<ffffffff817976b0>] ? iw_handler_get_private+0x70/0x70
[ 463.378536] [<ffffffff81796a70>] ? call_commit_handler+0x40/0x40
[ 463.381151] [<ffffffff81796016>] wireless_process_ioctl+0x176/0x1c0
[ 463.383751] [<ffffffff81796c49>] wext_handle_ioctl+0x69/0xb0
[ 463.386327] [<ffffffff816c3d92>] dev_ioctl+0x2f2/0x590
[ 463.388909] [<ffffffff811d3db2>] ? kmem_cache_alloc_trace+0x1e2/0x220
[ 463.391505] [<ffffffff8168e9a2>] sock_ioctl+0x132/0x2c0
[ 463.391508] [<ffffffff812048a8>] do_vfs_ioctl+0x2f8/0x510
[ 463.391510] [<ffffffff81204b41>] SyS_ioctl+0x81/0xa0
[ 463.391514] [<ffffffff817b9c0d>] system_call_fastpath+0x16/0x1b
[ 463.391516] ---[ end trace 1cbc6978cc0030de ]---
[ 464.849444] IPv6: ADDRCONF(NETDEV_UP): wlp5s0: link is not ready
[ 464.852812] device wlp5s0 entered promiscuous mode
[ 464.891435] BUG: unable to handle kernel NULL pointer dereference at 0000000000000006
[ 464.893883] IP: [<ffffffffc073998e>] rtl_get_tcb_desc+0x5e/0x760 [rtlwifi]
[ 464.896313] PGD 368cd067 PUD d49a8067 PMD 0
[ 464.898739] Oops: 0002 [#1] SMP
[ 464.901146] Modules linked in: netconsole(E) pps_ldisc(E) pps_core(E) vhost_net(E) vhost(E) macvtap(E) macvlan(E) nf_conntrack_netlink(E) nfnetlink(E) bridge(E) stp(E) llc(E) xt_tcpudp(E) xt_conntrack(E) iptable_filter(E) ipt_MASQUERADE(E) nf_nat_masquerade_ipv4(E) iptable_nat(E) nf_conntrack_ipv4(E) nf_defrag_ipv4(E) nf_nat_ipv4(E) nf_nat(E) nf_conntrack(E) iptable_mangle(E) ip_tables(E) x_tables(E) ppdev(E) intel_rapl(E) iosf_mbi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) kvm(E) crct10dif_pclmul(E) crc32_pclmul(E) arc4(E) ghash_clmulni_intel(E) cryptd(E) serio_raw(E) rtl8188ee(E) ath10k_pci(E) rtl_pci(E) lpc_ich(E) ath10k_core(E) rtlwifi(E) ath(E) option(E) usb_wwan(E) usbserial(E) snd_hda_codec_hdmi(E) mac80211(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) cfg80211(E) snd_hda_intel(E) i915(E) snd_hda_controller(E) snd_hda_codec(E) snd_hwdep(E) drm_kms_helper(E) snd_pcm(E) snd_timer(E) drm(E) mei_me(E) snd(E) mei(E) soundcore(E) i2c_algo_bit(E)
shpchp(E) 8250_fintek(E) parport_pc(
E) qmi_wwan(E) cdc_wdm(E) video(E) usbnet(E) mac_hid(E) lp(E) parport(E) hid_generic(E) psmouse(E) usbhid(E) hid(E) pata_acpi(E) r8169(E) mii(E) configfs(E) [last unloaded: netconsole]
[ 464.917354] CPU: 0 PID: 2610 Comm: hostapd Tainted: G W E 4.0.4+ #1
[ 464.920124] Hardware name: BIOSTAR Group NM70I-1037U/NM70I-1037U, BIOS 4.6.5 06/05/2013
[ 464.922902] task: ffff88003672db20 ti: ffff8800d2b48000 task.ti: ffff8800d2b48000
[ 464.925678] RIP: 0010:[<ffffffffc073998e>] [<ffffffffc073998e>] rtl_get_tcb_desc+0x5e/0x760 [rtlwifi]
[ 464.928487] RSP: 0018:ffff8800d2b4b6d8 EFLAGS: 00010082
[ 464.931286] RAX: 0000000000000000 RBX: ffff880119f506a0 RCX: 0000000000000000
[ 464.934099] RDX: 0000000000000000 RSI: ffff880119f52848 RDI: ffff880119f506a0
[ 464.936909] RBP: ffff8800d2b4b718 R08: 0000000000000000 R09: 0000000000000000
[ 464.939689] R10: ffff8800d2033c38 R11: ffff8800d4ec8000 R12: ffff8800d3b8b528
[ 464.942433] R13: ffff8800d2ae1420 R14: 0000000000000080 R15: ffff880119f522e0
[ 464.945142] FS: 00007fc263cf6740(0000) GS:ffff88011f200000(0000) knlGS:0000000000000000
[ 464.947870] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 464.950572] CR2: 0000000000000006 CR3: 00000000369c4000 CR4: 00000000001407f0
[ 464.953256] Stack:
[ 464.955864] ffff8800d3b8b530 ffff8800d2ae1420 ffff8800d2b4b708 ffff8800d4ec8000
[ 464.958450] 0000000000000000 ffff8800d2ae1420 ffff8800d3b8b500 ffff880119f522e0
[ 464.960965] ffff8800d2b4b798 ffffffffc071763c ffff8800d2b4b7a8 ffff880000000068
[ 464.963415] Call Trace:
[ 464.965772] [<ffffffffc071763c>] rtl88ee_tx_fill_desc+0xac/0x8d0 [rtl8188ee]
[ 464.968205] [<ffffffffc066e36a>] ? rate_control_get_rate+0xda/0xf0 [mac80211]
[ 464.970514] [<ffffffffc03be55b>] rtl_pci_tx+0x18b/0x410 [rtl_pci]
[ 464.972808] [<ffffffffc073d78a>] rtl_op_bss_info_changed+0x6da/0x7b0 [rtlwifi]
[ 464.975108] [<ffffffffc067534a>] ? ieee80211_assign_beacon+0x5a/0x230 [mac80211]
[ 464.977415] [<ffffffffc0655bba>] ieee80211_bss_info_change_notify+0xca/0x1d0 [mac80211]
[ 464.979733] [<ffffffffc0675c49>] ieee80211_start_ap+0x409/0x4e0 [mac80211]
[ 464.982086] [<ffffffffc05abf07>] nl80211_start_ap+0x2f7/0x570 [cfg80211]
[ 464.984437] [<ffffffff816de615>] genl_family_rcv_msg+0x1a5/0x3d0
[ 464.986757] [<ffffffff816de840>] ? genl_family_rcv_msg+0x3d0/0x3d0
[ 464.989060] [<ffffffff816de8d1>] genl_rcv_msg+0x91/0xd0
[ 464.991351] [<ffffffff816ddb71>] netlink_rcv_skb+0xc1/0xe0
[ 464.993631] [<ffffffff816de21c>] genl_rcv+0x2c/0x40
[ 464.995900] [<ffffffff816dd216>] netlink_unicast+0xf6/0x200
[ 464.998169] [<ffffffff8101360f>] ? __switch_to+0x15f/0x570
[ 465.000430] [<ffffffff816dd73c>] netlink_sendmsg+0x41c/0x670
[ 465.002692] [<ffffffff8168ff77>] do_sock_sendmsg+0x87/0xb0
[ 465.004947] [<ffffffff81691b23>] ___sys_sendmsg+0x313/0x320
[ 465.007197] [<ffffffff813b92d3>] ? unlock_buckets+0x33/0x40
[ 465.009443] [<ffffffff816da182>] ? netlink_insert+0x92/0xe0
[ 465.011690] [<ffffffff810b7298>] ? __wake_up+0x48/0x60
[ 465.013929] [<ffffffff816dc32f>] ? netlink_table_ungrab+0x2f/0x40
[ 465.016168] [<ffffffff816dcaa9>] ? netlink_bind+0x169/0x240
[ 465.018409] [<ffffffff81692442>] __sys_sendmsg+0x42/0x80
[ 465.020648] [<ffffffff81692492>] SyS_sendmsg+0x12/0x20
[ 465.022884] [<ffffffff817b9c0d>] system_call_fastpath+0x16/0x1b
[ 465.025118] Code: 0f 88 df 06 00 00 0f b6 76 04 48 8b 4f 38 48 8b b4 f1 d8 00 00 00 48 8d 0c 40 48 8b 46 08 48 8d 04 88 48 85 c0 74 08 0f b7 40 06 <41> 88 40 06 44 89 f0 83 e0 0c 66 83 f8 08 74 32 41 0f b6 40 03
[ 465.027762] RIP [<ffffffffc073998e>] rtl_get_tcb_desc+0x5e/0x760 [rtlwifi]
[ 465.030150] RSP <ffff8800d2b4b6d8>
[ 465.032495] CR2: 0000000000000006
[ 465.034836] ---[ end trace 1cbc6978cc0030df ]---
[ 490.974925] ------------[ cut here ]------------
[ 490.977230] WARNING: CPU: 0 PID: 2610 at kernel/watchdog.c:290 watchdog_overflow_callback+0x9a/0xc0()
[ 490.979533] Watchdog detected hard LOCKUP on cpu 0
[ 490.979559] Modules linked in: netconsole(E) pps_ldisc(E) pps_core(E) vhost_net(E) vhost(E) macvtap(E) macvlan(E) nf_conntrack_netlink(E) nfnetlink(E) bridge(E) stp(E) llc(E) xt_tcpudp(E) xt_conntrack(E) iptable_filter(E) ipt_MASQUERADE(E) nf_nat_masquerade_ipv4(E) iptable_nat(E) nf_conntrack_ipv4(E) nf_defrag_ipv4(E) nf_nat_ipv4(E) nf_nat(E) nf_conntrack(E) iptable_mangle(E) ip_tables(E) x_tables(E) ppdev(E) intel_rapl(E) iosf_mbi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) kvm(E) crct10dif_pclmul(E) crc32_pclmul(E) arc4(E) ghash_clmulni_intel(E) cryptd(E) serio_raw(E) rtl8188ee(E) ath10k_pci(E) rtl_pci(E) lpc_ich(E) ath10k_core(E) rtlwifi(E) ath(E) option(E) usb_wwan(E) usbserial(E) snd_hda_codec_hdmi(E) mac80211(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) cfg80211(E) snd_hda_intel(E) i915(E) snd_hda_controller(E) snd_hda_codec(E) snd_hwdep(E) drm_kms_helper(E) snd_pcm(E) snd_timer(E) drm(E) mei_me(E) snd(E) mei(E) soundcore(E) i2c_algo_bit(E)
shpchp(E) 8250_fintek(E) parport_pc(
E) qmi_wwan(E) cdc_wdm(E) video(E) usbnet(E) mac_hid(E) lp(E) parport(E) hid_generic(E) psmouse(E) usbhid(E) hid(E) pata_acpi(E) r8169(E) mii(E) configfs(E) [last unloaded: netconsole]
[ 490.997688] CPU: 0 PID: 2610 Comm: hostapd Tainted: G D W E 4.0.4+ #1
[ 491.000355] Hardware name: BIOSTAR Group NM70I-1037U/NM70I-1037U, BIOS 4.6.5 06/05/2013
[ 491.003048] ffffffff81abcf07 ffff88011f205ac0 ffffffff817b2128 0000000000000000
[ 491.005695] ffff88011f205b10 ffff88011f205b00 ffffffff81075cfa 0000000000000000
[ 491.008263] ffff88011a814800 0000000000000000 ffff88011f205c40 0000000000000000
[ 491.010762] Call Trace:
[ 491.013163] <NMI> [<ffffffff817b2128>] dump_stack+0x45/0x57
[ 491.015528] [<ffffffff81075cfa>] warn_slowpath_common+0x8a/0xc0
[ 491.017814] [<ffffffff81075d76>] warn_slowpath_fmt+0x46/0x50
[ 491.020081] [<ffffffff8112c9da>] watchdog_overflow_callback+0x9a/0xc0
[ 491.022337] [<ffffffff8117192c>] __perf_event_overflow+0x8c/0x230
[ 491.024578] [<ffffffff8102cad7>] ? x86_perf_event_set_period+0xe7/0x150
[ 491.026804] [<ffffffff811723c4>] perf_event_overflow+0x14/0x20
[ 491.029013] [<ffffffff81033e9a>] intel_pmu_handle_irq+0x1ba/0x3a0
[ 491.031218] [<ffffffff8102b7bb>] perf_event_nmi_handler+0x2b/0x50
[ 491.033423] [<ffffffff81019338>] nmi_handle+0x88/0x120
[ 491.035617] [<ffffffff810198aa>] default_do_nmi+0x4a/0x140
[ 491.037806] [<ffffffff81019a28>] do_nmi+0x88/0xc0
[ 491.039993] [<ffffffff817bc101>] end_repeat_nmi+0x1e/0x2e
[ 491.042160] [<ffffffff817b9522>] ? _raw_spin_lock_irqsave+0x52/0x80
[ 491.044315] [<ffffffff817b9522>] ? _raw_spin_lock_irqsave+0x52/0x80
[ 491.046450] [<ffffffff817b9522>] ? _raw_spin_lock_irqsave+0x52/0x80
[ 491.048557] <<EOE>> <IRQ> [<ffffffffc03bff8f>] _rtl_pci_interrupt+0x5f/0x3d0 [rtl_pci]
[ 491.050696] [<ffffffff81050935>] ? msi_set_affinity+0x75/0x90
[ 491.052820] [<ffffffff810cee1e>] handle_irq_event_percpu+0x3e/0x1a0
[ 491.054943] [<ffffffff810cefc1>] handle_irq_event+0x41/0x70
[ 491.057047] [<ffffffff810d1f6f>] handle_edge_irq+0x7f/0x120
[ 491.059139] [<ffffffff81017732>] handle_irq+0x22/0x40
[ 491.061220] [<ffffffff817bcb61>] do_IRQ+0x51/0xf0
[ 491.063291] [<ffffffff817ba92d>] common_interrupt+0x6d/0x6d
[ 491.065362] [<ffffffff8101e129>] ? read_tsc+0x9/0x10
[ 491.067425] [<ffffffff81079faa>] ? __do_softirq+0x8a/0x2d0
[ 491.069473] [<ffffffff81079f40>] ? __do_softirq+0x20/0x2d0
[ 491.071505] [<ffffffff8107a4cd>] irq_exit+0xfd/0x110
[ 491.073524] [<ffffffff817bcc4a>] smp_apic_timer_interrupt+0x4a/0x60
[ 491.075553] [<ffffffff817bacad>] apic_timer_interrupt+0x6d/0x80
[ 491.077586] <EOI> [<ffffffff810ff0f1>] ? acct_collect+0x191/0x200
[ 491.079641] [<ffffffff810ff09a>] ? acct_collect+0x13a/0x200
[ 491.081692] [<ffffffff81078798>] do_exit+0x758/0xb30
[ 491.083739] [<ffffffff81018a18>] oops_end+0xa8/0x120
[ 491.085785] [<ffffffff817ad6dc>] no_context+0x2df/0x343
[ 491.087833] [<ffffffff817ad7b3>] __bad_area_nosemaphore+0x73/0x1cc
[ 491.089886] [<ffffffff817adaf1>] bad_area+0x44/0x4c
[ 491.091938] [<ffffffff8106307a>] __do_page_fault+0x2fa/0x440
[ 491.093993] [<ffffffff810631f1>] do_page_fault+0x31/0x70
[ 491.096050] [<ffffffff817bbdc8>] page_fault+0x28/0x30
[ 491.098111] [<ffffffffc073998e>] ? rtl_get_tcb_desc+0x5e/0x760 [rtlwifi]
[ 491.100186] [<ffffffffc071763c>] rtl88ee_tx_fill_desc+0xac/0x8d0 [rtl8188ee]
[ 491.102278] [<ffffffffc066e36a>] ? rate_control_get_rate+0xda/0xf0 [mac80211]
[ 491.104371] [<ffffffffc03be55b>] rtl_pci_tx+0x18b/0x410 [rtl_pci]
[ 491.106467] [<ffffffffc073d78a>] rtl_op_bss_info_changed+0x6da/0x7b0 [rtlwifi]
[ 491.108582] [<ffffffffc067534a>] ? ieee80211_assign_beacon+0x5a/0x230 [mac80211]
[ 491.110701] [<ffffffffc0655bba>] ieee80211_bss_info_change_notify+0xca/0x1d0 [mac80211]
[ 491.112742] [<ffffffffc0675c49>] ieee80211_start_ap+0x409/0x4e0 [mac80211]
[ 491.114702] [<ffffffffc05abf07>] nl80211_start_ap+0x2f7/0x570 [cfg80211]
[ 491.116645] [<ffffffff816de615>] genl_family_rcv_msg+0x1a5/0x3d0
[ 491.118590] [<ffffffff816de840>] ? genl_family_rcv_msg+0x3d0/0x3d0
[ 491.120531] [<ffffffff816de8d1>] genl_rcv_msg+0x91/0xd0
[ 491.122469] [<ffffffff816ddb71>] netlink_rcv_skb+0xc1/0xe0
[ 491.124386] [<ffffffff816de21c>] genl_rcv+0x2c/0x40
[ 491.126281] [<ffffffff816dd216>] netlink_unicast+0xf6/0x200
[ 491.128112] [<ffffffff8101360f>] ? __switch_to+0x15f/0x570
[ 491.129863] [<ffffffff816dd73c>] netlink_sendmsg+0x41c/0x670
[ 491.131545] [<ffffffff8168ff77>] do_sock_sendmsg+0x87/0xb0
[ 491.133150] [<ffffffff81691b23>] ___sys_sendmsg+0x313/0x320
[ 491.134685] [<ffffffff813b92d3>] ? unlock_buckets+0x33/0x40
[ 491.136143] [<ffffffff816da182>] ? netlink_insert+0x92/0xe0
[ 491.137585] [<ffffffff810b7298>] ? __wake_up+0x48/0x60
[ 491.139005] [<ffffffff816dc32f>] ? netlink_table_ungrab+0x2f/0x40
[ 491.140413] [<ffffffff816dcaa9>] ? netlink_bind+0x169/0x240
[ 491.141820] [<ffffffff81692442>] __sys_sendmsg+0x42/0x80
[ 491.143220] [<ffffffff81692492>] SyS_sendmsg+0x12/0x20
[ 491.144609] [<ffffffff817b9c0d>] system_call_fastpath+0x16/0x1b
[ 491.145992] ---[ end trace 1cbc6978cc0030e0 ]---
Severn <[email protected]> writes:
> I've been hitting this NULL pointer deref with an rtl8188ee PCIE card.
> It happens 100% of the time when I bring up a WPA2-PSK AP with hostapd
> 2.4.
>
> If I revert 33511b157bbcebaef853cc1811992b664a2e5862, everything seems
> to work properly.
>
> Below is my hostapd.conf and the crash log. This is mainline 4.0.4
> with no patches.
Below is the changelog for the commit. Larry & Taehee, what should we
do?
commit 33511b157bbcebaef853cc1811992b664a2e5862
Author: Taehee Yoo <[email protected]>
Date: Wed Jan 21 16:58:19 2015 +0900
rtlwifi: add support to send beacon frame.
In AP mode, beacon frame is necessary to keep connection.
this patch adds a sending beacon frame routine in initialization routine.
Signed-off-by: Taehee Yoo <[email protected]>
Acked-by: Larry Finger <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
--
Kalle Valo
On 06/06/2015 08:20 AM, Kalle Valo wrote:
> Severn <[email protected]> writes:
>
>> I've been hitting this NULL pointer deref with an rtl8188ee PCIE card.
>> It happens 100% of the time when I bring up a WPA2-PSK AP with hostapd
>> 2.4.
>>
>> If I revert 33511b157bbcebaef853cc1811992b664a2e5862, everything seems
>> to work properly.
>>
>> Below is my hostapd.conf and the crash log. This is mainline 4.0.4
>> with no patches.
>
> Below is the changelog for the commit. Larry & Taehee, what should we
> do?
>
> commit 33511b157bbcebaef853cc1811992b664a2e5862
> Author: Taehee Yoo <[email protected]>
> Date: Wed Jan 21 16:58:19 2015 +0900
>
> rtlwifi: add support to send beacon frame.
>
> In AP mode, beacon frame is necessary to keep connection.
> this patch adds a sending beacon frame routine in initialization routine.
>
> Signed-off-by: Taehee Yoo <[email protected]>
> Acked-by: Larry Finger <[email protected]>
> Signed-off-by: Kalle Valo <[email protected]>
Kalle,
I'm trying to find the missing setup step when the new interface is added to the
driver. Whatever it is is causing mac80211 to issue the warning at
net/mac80211/driver-ops.h:12. That problem appears to cascade to the NULL
pointer dereference. Any help would be appreciated.
Reversion of the above commit may be necessary, but I would like to see if we
can get a better "fix" as that commit is necessary for proper beaconing.
Larry