[LEDE-DEV] ath9k - WARN_ON origskb->len <= FCS_LEN - Driver bug?
Nick Lowe
nick.lowe at gmail.com
Sat Jan 13 08:26:56 PST 2018
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.617226]
------------[ cut here ]------------
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.621909] WARNING:
CPU: 0 PID: 0 at backports-2017-11-01/net/mac80211/rx.c:629
ieee80211_rx_napi+0x1dd/0x7de [mac80211]
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.632921] Modules
linked in: ath9k ath9k_common pppoe ppp_async ath9k_hw ath pppox
ppp_generic nf_conntrack_ipv6 mac80211 iptable_nat ipt_REJECT
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport
xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT
xt_LOG xt_CT slhc r8169 nf_reject_ipv4 nf_nat_redirect
nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat
nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache
nf_conntrack iptable_mangle iptable_filter ip_tables e1000e crc_ccitt
compat i2c_dev ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common
ip6table_mangle ip6table_filter ip6_tables x_tables igb i2c_algo_bit
e1000 leds_apu2 button_hotplug ptp pps_core mii
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.697754] CPU: 0 PID:
0 Comm: swapper/0 Tainted: G W 4.9.76 #0
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.704922] Hardware
name: PC Engines APU2/APU2, BIOS 4.0.7 02/28/2017
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.711473]
0000000000000000 ffffffff811f34ee 0000000000000000 0000000000000009
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.719045]
ffffffff8106c2bc ffff880119612800 ffff880118e50f40 0000000000000000
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.726575]
0000000000000246 0000000000000000 ffff880119612800 ffffffffa01ad021
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.734133] Call Trace:
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.736607] <IRQ>
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.738554]
[<ffffffff811f34ee>] ? dump_stack+0x5d/0x79
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.743937]
[<ffffffff8106c2bc>] ? __warn+0xb2/0xcb
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.748963]
[<ffffffffa01ad021>] ? ieee80211_rx_napi+0x1dd/0x7de [mac80211]
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.756042]
[<ffffffff8120cfe4>] ? swiotlb_tbl_map_single+0x198/0x22e
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.762603]
[<ffffffffa0271260>] ? ath9k_cmn_rx_skb_postprocess+0x47/0x10d
[ath9k_common]
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.770936]
[<ffffffffa027f2ed>] ? ath_rx_tasklet+0xc2f/0xc55 [ath9k]
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.777496]
[<ffffffffa027ccd6>] ? ath9k_tasklet+0x160/0x1d9 [ath9k]
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.783964]
[<ffffffff8106f76c>] ? tasklet_action+0x9f/0xa8
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.789680]
[<ffffffff8106fa8f>] ? __do_softirq+0xb8/0x1a1
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.795284]
[<ffffffff8106fd07>] ? irq_exit+0x4f/0x5b
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.800455]
[<ffffffff8101e645>] ? do_IRQ+0xa4/0xba
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.805451]
[<ffffffff814b75d3>] ? common_interrupt+0x93/0x93
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.811312] <EOI>
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.813258]
[<ffffffff814b669a>] ? native_safe_halt+0x2/0x3
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.818971]
[<ffffffff814b67fd>] ? acpi_safe_halt+0x15/0x1f
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.824656]
[<ffffffff812756cb>] ? acpi_idle_enter+0x1be/0x1de
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.830622]
[<ffffffff813a13ea>] ? cpuidle_enter_state+0xda/0x18e
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.836849]
[<ffffffff81094437>] ? cpu_startup_entry+0x15b/0x1ce
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.842994]
[<ffffffff818a0f33>] ? start_kernel+0x4e2/0x4ea
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.848684]
[<ffffffff818a0120>] ? early_idt_handler_array+0x120/0x120
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.855331]
[<ffffffff818a03ad>] ? x86_64_start_kernel+0xe5/0xf2
Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.861465] ---[ end
trace 031f3c64238b9dd3 ]---
Sat Jan 13 09:30:19 2018 kern.warn kernel: [49273.996500]
------------[ cut here ]------------
On Sat, Jan 13, 2018 at 4:25 PM, Nick Lowe <nick.lowe at gmail.com> wrote:
> Hi all,
>
> I am seeing a WARN_ON being hit frequently with ath9k after updating
> to OpenWrt SNAPSHOT r5763-89233a8. The code generating the warning
> seems to point that this is a driver bug.
>
> rx.c:
> if (ieee80211_hw_check(&local->hw, RX_INCLUDES_FCS)) {
> if (unlikely(origskb->len <= FCS_LEN)) {
> /* driver bug */
> WARN_ON(1);
> dev_kfree_skb(origskb);
> return NULL;
> }
> present_fcs_len = FCS_LEN;
> }
>
> Any thoughts? :-)
>
>
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.585033]
> ------------[ cut here ]------------
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.589716] WARNING:
> CPU: 0 PID: 11565 at backports-2017-11-01/net/mac80211/rx.c:629
> ieee80211_rx_napi+0x1dd/0x7de [mac80211]
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.601095] Modules
> linked in: ath9k ath9k_common pppoe ppp_async ath9k_hw ath pppox
> ppp_generic nf_conntrack_ipv6 mac80211 iptable_nat ipt_REJECT
> ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport
> xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT
> xt_LOG xt_CT slhc r8169 nf_reject_ipv4 nf_nat_redirect
> nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat
> nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache
> nf_conntrack iptable_mangle iptable_filter ip_tables e1000e crc_ccitt
> compat i2c_dev ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common
> ip6table_mangle ip6table_filter ip6_tables x_tables igb i2c_algo_bit
> e1000 leds_apu2 button_hotplug ptp pps_core mii
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.665926] CPU: 0 PID:
> 11565 Comm: kworker/u8:1 Tainted: G W 4.9.76 #0
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.673715] Hardware
> name: PC Engines APU2/APU2, BIOS 4.0.7 02/28/2017
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.680288] Workqueue:
> phy0 ath_reset_work [ath9k]
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.685135]
> 0000000000000000 ffffffff811f34ee 0000000000000000 0000000000000009
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.692664]
> ffffffff8106c2bc ffff88011944f100 ffff880118e50f40 0000000000000000
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.700197]
> 0000000000000246 0000000000000000 ffff88011944f100 ffffffffa01ad021
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.707745] Call Trace:
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.710228]
> [<ffffffff811f34ee>] ? dump_stack+0x5d/0x79
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.715590]
> [<ffffffff8106c2bc>] ? __warn+0xb2/0xcb
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.720607]
> [<ffffffffa01ad021>] ? ieee80211_rx_napi+0x1dd/0x7de [mac80211]
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.727685]
> [<ffffffff8120cfe4>] ? swiotlb_tbl_map_single+0x198/0x22e
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.734256]
> [<ffffffffa0271260>] ? ath9k_cmn_rx_skb_postprocess+0x47/0x10d
> [ath9k_common]
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.742581]
> [<ffffffffa027f2ed>] ? ath_rx_tasklet+0xc2f/0xc55 [ath9k]
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.749149]
> [<ffffffffa027f37a>] ? ath_stoprecv+0x67/0xbf7 [ath9k]
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.755449]
> [<ffffffffa027ba6b>] ? ath9k_deinit_device+0x49d/0x67d [ath9k]
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.762471]
> [<ffffffffa027d298>] ? ath9k_calculate_summary_state+0x46f/0x52a
> [ath9k]
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.770366]
> [<ffffffffa027d3af>] ? ath_reset_work+0x1a/0x1cc [ath9k]
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.776845]
> [<ffffffff8107c43e>] ? process_one_work+0x196/0x29f
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.782894]
> [<ffffffff8107ce06>] ? worker_thread+0x28e/0x381
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.788674]
> [<ffffffff8107cb78>] ? rescuer_thread+0x2d7/0x2d7
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.794536]
> [<ffffffff8106f2bc>] ? do_group_exit+0x36/0x98
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.800144]
> [<ffffffff81080820>] ? kthread+0xc2/0xca
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.805231]
> [<ffffffff8108075e>] ? kthread_park+0x4b/0x4b
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.810753]
> [<ffffffff814b6ea1>] ? ret_from_fork+0x41/0x50
> Sat Jan 13 09:30:17 2018 kern.warn kernel: [49271.816387] ---[ end
> trace 031f3c64238b9dd0 ]---
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.050693]
> ------------[ cut here ]------------
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.055414] WARNING:
> CPU: 1 PID: 0 at backports-2017-11-01/net/mac80211/rx.c:629
> ieee80211_rx_napi+0x1dd/0x7de [mac80211]
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.066442] Modules
> linked in: ath9k ath9k_common pppoe ppp_async ath9k_hw ath pppox
> ppp_generic nf_conntrack_ipv6 mac80211 iptable_nat ipt_REJECT
> ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport
> xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT
> xt_LOG xt_CT slhc r8169 nf_reject_ipv4 nf_nat_redirect
> nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat
> nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache
> nf_conntrack iptable_mangle iptable_filter ip_tables e1000e crc_ccitt
> compat i2c_dev ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common
> ip6table_mangle ip6table_filter ip6_tables x_tables igb i2c_algo_bit
> e1000 leds_apu2 button_hotplug ptp pps_core mii
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.131320] CPU: 1 PID:
> 0 Comm: swapper/1 Tainted: G W 4.9.76 #0
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.138503] Hardware
> name: PC Engines APU2/APU2, BIOS 4.0.7 02/28/2017
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.145056]
> 0000000000000000 ffffffff811f34ee 0000000000000000 0000000000000009
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.152587]
> ffffffff8106c2bc ffff8801183e2100 ffff880118e50f40 0000000000000000
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.160130]
> 0000000000000246 0000000000000000 ffff8801183e2100 ffffffffa01ad021
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.167662] Call Trace:
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.170145] <IRQ>
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.172095]
> [<ffffffff811f34ee>] ? dump_stack+0x5d/0x79
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.177469]
> [<ffffffff8106c2bc>] ? __warn+0xb2/0xcb
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.182502]
> [<ffffffffa01ad021>] ? ieee80211_rx_napi+0x1dd/0x7de [mac80211]
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.189595]
> [<ffffffff8120cfe4>] ? swiotlb_tbl_map_single+0x198/0x22e
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.196165]
> [<ffffffffa0271260>] ? ath9k_cmn_rx_skb_postprocess+0x47/0x10d
> [ath9k_common]
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.204481]
> [<ffffffffa027f2ed>] ? ath_rx_tasklet+0xc2f/0xc55 [ath9k]
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.211048]
> [<ffffffffa027ccd6>] ? ath9k_tasklet+0x160/0x1d9 [ath9k]
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.217519]
> [<ffffffff8106f76c>] ? tasklet_action+0x9f/0xa8
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.223227]
> [<ffffffff8106fa8f>] ? __do_softirq+0xb8/0x1a1
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.228831]
> [<ffffffff8106fd07>] ? irq_exit+0x4f/0x5b
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.234005]
> [<ffffffff8101e645>] ? do_IRQ+0xa4/0xba
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.239008]
> [<ffffffff814b75d3>] ? common_interrupt+0x93/0x93
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.244866] <EOI>
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.246823]
> [<ffffffff813a1449>] ? cpuidle_enter_state+0x139/0x18e
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.253165]
> [<ffffffff813a1402>] ? cpuidle_enter_state+0xf2/0x18e
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.259377]
> [<ffffffff81094437>] ? cpu_startup_entry+0x15b/0x1ce
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.265504]
> [<ffffffff81031ac4>] ? start_secondary+0x12b/0x12e
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.271464] ---[ end
> trace 031f3c64238b9dd1 ]---
> Sat Jan 13 09:30:18 2018 kern.warn kernel: [49272.361675]
> ------------[ cut here ]------------
>
> Cheers,
>
> Nick
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