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Opened 7 years ago

Closed 7 years ago

#8253 closed defect (duplicate)

ath9k kernel warnings

Reported by: cdhinch@… Owned by: developers
Priority: normal Milestone: Backfire 10.03.1
Component: kernel Version: Trunk
Keywords: Cc:

Description

I'm using a Buffalo WZR-HP-G300NH (Atheros AR9132 rev 2) with backfire r24010.

The system seems to be running fine, but I get the following warning is in the kernel log at boot.

ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x40000020
------------[ cut here ]------------
WARNING: at /home/charles/OpenWrt/trunk/build_dir/linux-ar71xx_generic/compat-wireless-2010-11-10/drivers/net/wireless/ath/ath9k/recv.c:532 0x831875c4()
Could not stop RX, we could be confusing the DMA engine when we start RX up
Modules linked in: ums_usbat ums_sddr55 ums_sddr09 ums_karma ums_jumpshot ums_isd200 ums_freecom ums_datafab ums_cypress ums_alauda usb_storage ohci_hcd ath_pci ath_hal(P) xt_IMQ nf_nat_tftp nf_conntrack_tftp nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp xt_HL xt_hl xt_MARK ipt_ECN xt_CLASSIFY xt_time xt_tcpmss xt_statistic xt_mark xt_length ipt_ecn xt_DSCP xt_dscp xt_string sch_red xt_layer7 sch_sfq ipt_MASQUERADE sch_hfsc iptable_nat cls_fw nf_nat imq xt_CONNMARK xt_recent xt_helper xt_conntrack xt_connmark xt_connbytes xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ehci_hcd sd_mod pppoe pppox ipt_REJECT xt_TCPMSS ipt_LOG xt_comment xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables xt_tcpudp x_tables msdos ext2 ext3 jbd ppp_async ppp_generic slhc vfat fat ext4 jbd2 ath9k ath9k_common ath9k_hw ath mac80211 usbcore ts_fsm ts_bm ts_kmp scsi_mod nls_base mbcache crc16 crc_ccitt cfg80211 compat_firmware_class compat arc4 aes_generic deflate ecb cbc leds_gpio button_hotplug gpio_buttons input_polldev input_core
Call Trace:[<8007e680>] 0x8007e680
[<8006916c>] 0x8006916c
[<8006916c>] 0x8006916c
[<8007dc88>] 0x8007dc88
[<831875c4>] 0x831875c4
[<8007dd08>] 0x8007dd08
[<831875c4>] 0x831875c4
[<83184098>] 0x83184098
[<83182b3c>] 0x83182b3c
[<83185064>] 0x83185064
[<83113010>] 0x83113010
[<80177488>] 0x80177488
[<830b6434>] 0x830b6434
[<801774e4>] 0x801774e4
[<830a7dc8>] 0x830a7dc8
[<80177544>] 0x80177544
[<801f41cc>] 0x801f41cc
[<830af08c>] 0x830af08c
[<830ae4b8>] 0x830ae4b8
[<83034340>] 0x83034340
[<801778d4>] 0x801778d4
[<801f6794>] 0x801f6794
[<801f50c4>] 0x801f50c4
[<801f65ac>] 0x801f65ac
[<801f5494>] 0x801f5494
[<801f6594>] 0x801f6594
[<801cf79c>] 0x801cf79c
[<800787f8>] 0x800787f8
[<801f503c>] 0x801f503c
[<801f5a00>] 0x801f5a00
[<801d0b4c>] 0x801d0b4c
[<801f5af0>] 0x801f5af0
[<801f40fc>] 0x801f40fc
[<80077f68>] 0x80077f68
[<801c8aa4>] 0x801c8aa4
[<801c86a0>] 0x801c86a0
[<80079b04>] 0x80079b04
[<80077f68>] 0x80077f68
[<80093310>] 0x80093310
[<801d227c>] 0x801d227c
[<801dae3c>] 0x801dae3c
[<801c8c5c>] 0x801c8c5c
[<80073850>] 0x80073850
[<800e62b0>] 0x800e62b0
[<800795e4>] 0x800795e4
[<8007bb30>] 0x8007bb30
[<800796ec>] 0x800796ec
[<800799e8>] 0x800799e8
[<801c9528>] 0x801c9528
[<80069a2c>] 0x80069a2c
[<800e6a54>] 0x800e6a54
[<801c97a8>] 0x801c97a8
[<80062544>] 0x80062544

---[ end trace a2d27205abded4ba ]---
ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x42000020


Attachments (1)

kernel_log (11.9 KB) - added by cdhinch@… 7 years ago.
kernel log

Download all attachments as: .zip

Change History (4)

comment:1 Changed 7 years ago by Gorby

Please enable "make menuconfig" -> "Global build settings" -> "Compile kernel with symbol table information", so the upper info will be much more useful with it.

Changed 7 years ago by cdhinch@…

kernel log

comment:2 Changed 7 years ago by cdhinch@…

I recompiled as instructed. I'm attaching the full kernel log but here is warning that I am getting:

ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x40000020
------------[ cut here ]------------
WARNING: at /home/charles/OpenWrt/trunk/build_dir/linux-ar71xx_generic/compat-wireless-2010-11-10/drivers/net/wireless/ath/ath9k/recv.c:532 ath_stoprecv+0x90/0xa8 [ath9k]()
Could not stop RX, we could be confusing the DMA engine when we start RX up
Modules linked in: ums_usbat ums_sddr55 ums_sddr09 ums_karma ums_jumpshot ums_isd200 ums_freecom ums_datafab ums_cypress ums_alauda usb_storage ohci_hcd ath_pci ath_hal(P) xt_IMQ nf_nat_tftp nf_conntrack_tftp nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp xt_HL xt_hl xt_MARK ipt_ECN xt_CLASSIFY xt_time xt_tcpmss xt_statistic xt_mark xt_length ipt_ecn xt_DSCP xt_dscp xt_string xt_layer7 ipt_MASQUERADE iptable_nat nf_nat xt_CONNMARK sch_red xt_recent sch_sfq xt_helper sch_hfsc xt_conntrack xt_connmark cls_fw xt_connbytes xt_NOTRACK imq iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ehci_hcd sd_mod pppoe pppox ipt_REJECT xt_TCPMSS ipt_LOG xt_comment xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables xt_tcpudp x_tables msdos ext2 ext3 jbd ppp_async ppp_generic slhc vfat fat ext4 jbd2 ath9k ath9k_common ath9k_hw ath mac80211 usbcore ts_fsm ts_bm ts_kmp scsi_mod nls_base mbcache crc16 crc_ccitt cfg80211 compat_firmware_class compat arc4 aes_generic deflate ecb cbc leds_gpio button_hotplug gpio_buttons input_polldev input_core
Call Trace:
[<80069154>] dump_stack+0x8/0x34
[<8007dfe4>] warn_slowpath_common+0x70/0xb0
[<8007e064>] warn_slowpath_fmt+0x24/0x30
[<831075c4>] ath_stoprecv+0x90/0xa8 [ath9k]
[<83104098>] ath_set_channel+0xa4/0x804 [ath9k]
[<83105064>] ath_radio_enable+0x55c/0x680 [ath9k]
[<830d3010>] ieee80211_aes_cmac+0xc3c/0x225c [mac80211]
[<80179904>] nla_put+0x40/0x54

---[ end trace 0fd65410001773af ]---
ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x42000020

comment:3 Changed 7 years ago by nbd

  • Resolution set to duplicate
  • Status changed from new to closed

See #8343

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