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aircrack-ng / rtl8812au

RTL8812AU/21AU and RTL8814AU driver with monitor mode and frame injection
GNU General Public License v2.0
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cfg80211_ch_switch_notify warning with 5.7.0 on arm64 #660

Open satmandu opened 4 years ago

satmandu commented 4 years ago

Getting dmesg errors, but network seems to come up properly.

modinfo 88XXau | grep version
version:        v5.7.0_34085.20200313
srcversion:     C72C21688DF6784D2C47C44
vermagic:       5.4.45-v8 SMP preempt mod_unload modversions aarch64
parm:           rtw_chip_version:int
[   26.969773] brcmfmac: brcmf_cfg80211_set_power_mgmt: power save enabled
[   27.499487] [phydm_la_set_buff_mode] Warning!
[   27.499497] start_addr=(0x0), end_addr=(0x0), buffer_size=(0x0), smp_number_max=(0)
[   36.738513] ------------[ cut here ]------------
[   36.738652] WARNING: CPU: 1 PID: 1671 at net/wireless/nl80211.c:16299 cfg80211_ch_switch_notify+0x160/0x168 [cfg80211]
[   36.738656] Modules linked in: iptable_nat nf_nat nf_conntrack nf_defrag_ipv4 iptable_mangle iptable_filter bluetooth ecdh_generic ecc zram zsmalloc binfmt_misc brcmfmac bcm2835_codec(C) bcm2835_isp(C) bcm2835_v4l2(C) brcmutil v4l2_mem2mem videobuf2_dma_contig videobuf2_vmalloc bcm2835_mmal_vchiq(C) videobuf2_memops videobuf2_v4l2 videobuf2_common raspberrypi_hwmon videodev mc vc_sm_cma(C) rpivid_mem uio_pdrv_genirq uio sch_fq_codel drm i2c_dev drm_panel_orientation_quirks ip_tables x_tables ipv6 nf_defrag_ipv6 btrfs zstd_decompress zstd_compress xxhash raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq raid1 raid0 linear md_mod dm_mirror dm_region_hash dm_log dm_mod squashfs zfs(O) zunicode(O) zlua(PO) zcommon(O) znvpair(O) zavl(O) icp(O) spl(O) zlib_deflate 88XXau(O) sha256_generic libsha256 cfg80211 rfkill spidev i2c_bcm2835 spi_bcm2835
[   36.738728] CPU: 1 PID: 1671 Comm: RTW_CMD_THREAD Tainted: P         C O      5.4.45-v8+ #1321
[   36.738730] Hardware name: Raspberry Pi 4 Model B Rev 1.1 (DT)
[   36.738734] pstate: 60000005 (nZCv daif -PAN -UAO)
[   36.738779] pc : cfg80211_ch_switch_notify+0x160/0x168 [cfg80211]
[   36.738911] lr : rtw_cfg80211_ch_switch_notify+0xe8/0x138 [88XXau]
[   36.738913] sp : ffffffc01bc73c90
[   36.738916] x29: ffffffc01bc73c90 x28: ffffffc008c60430 
[   36.738920] x27: ffffffc008b1a2d8 x26: 0000000000000003 
[   36.738924] x25: ffffff80f5f27300 x24: 0000000000000000 
[   36.738927] x23: ffffff80f5d02000 x22: ffffff80f5f27000 
[   36.738930] x21: ffffff80f5c83000 x20: ffffffc01bc73d28 
[   36.738934] x19: ffffffc0115af000 x18: 0000000000000000 
[   36.738937] x17: 0000000000000000 x16: 0000000000000000 
[   36.738940] x15: 0000000000000000 x14: 0000000000000000 
[   36.738944] x13: 000000000000ffff x12: 1f192c1a2d000100 
[   36.738947] x11: 0000000000000004 x10: 0000000000000002 
[   36.738950] x9 : 0000000000000004 x8 : 0000000000000006 
[   36.738953] x7 : 3d00000000000000 x6 : 0000000000000001 
[   36.738956] x5 : ffffff80f5f27410 x4 : ffffff80f5f27bd8 
[   36.738960] x3 : ffffffc0115af000 x2 : ffffffc000000000 
[   36.738963] x1 : ffffff80f5d02118 x0 : 0000000000000000 
[   36.738967] Call trace:
[   36.739017]  cfg80211_ch_switch_notify+0x160/0x168 [cfg80211]
[   36.739089]  rtw_cfg80211_ch_switch_notify+0xe8/0x138 [88XXau]
[   36.739153]  rtw_chk_start_clnt_join+0x88/0x90 [88XXau]
[   36.739213]  join_cmd_hdl+0x244/0x34c [88XXau]
[   36.739278]  rtw_cmd_thread+0x278/0x3d0 [88XXau]
[   36.739284]  kthread+0xfc/0x128
[   36.739292]  ret_from_fork+0x10/0x1c
[   36.739296] ---[ end trace 18282a529371ca1c ]---
[   36.741354] ------------[ cut here ]------------
[   36.741463] WARNING: CPU: 1 PID: 1671 at net/wireless/nl80211.c:3157 nl80211_send_chandef+0x170/0x180 [cfg80211]
[   36.741466] Modules linked in: iptable_nat nf_nat nf_conntrack nf_defrag_ipv4 iptable_mangle iptable_filter bluetooth ecdh_generic ecc zram zsmalloc binfmt_misc brcmfmac bcm2835_codec(C) bcm2835_isp(C) bcm2835_v4l2(C) brcmutil v4l2_mem2mem videobuf2_dma_contig videobuf2_vmalloc bcm2835_mmal_vchiq(C) videobuf2_memops videobuf2_v4l2 videobuf2_common raspberrypi_hwmon videodev mc vc_sm_cma(C) rpivid_mem uio_pdrv_genirq uio sch_fq_codel drm i2c_dev drm_panel_orientation_quirks ip_tables x_tables ipv6 nf_defrag_ipv6 btrfs zstd_decompress zstd_compress xxhash raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq raid1 raid0 linear md_mod dm_mirror dm_region_hash dm_log dm_mod squashfs zfs(O) zunicode(O) zlua(PO) zcommon(O) znvpair(O) zavl(O) icp(O) spl(O) zlib_deflate 88XXau(O) sha256_generic libsha256 cfg80211 rfkill spidev i2c_bcm2835 spi_bcm2835
[   36.741532] CPU: 1 PID: 1671 Comm: RTW_CMD_THREAD Tainted: P        WC O      5.4.45-v8+ #1321
[   36.741535] Hardware name: Raspberry Pi 4 Model B Rev 1.1 (DT)
[   36.741538] pstate: 40000005 (nZcv daif -PAN -UAO)
[   36.741578] pc : nl80211_send_chandef+0x170/0x180 [cfg80211]
[   36.741615] lr : nl80211_send_chandef+0x40/0x180 [cfg80211]
[   36.741617] sp : ffffffc01bc73bd0
[   36.741619] x29: ffffffc01bc73bd0 x28: 0000000000000000 
[   36.741623] x27: ffffff80f5f27000 x26: ffffffc01bc73d28 
[   36.741626] x25: ffffff80f5c83108 x24: ffffff80c6714014 
[   36.741629] x23: 0000000000000058 x22: ffffff80e5aad400 
[   36.741633] x21: ffffffc010e38000 x20: ffffffc01bc73d28 
[   36.741636] x19: ffffffc010e38000 x18: 0000000000000000 
[   36.741639] x17: 0000000000000000 x16: 0000000000000000 
[   36.741642] x15: 0000000000000000 x14: 0000000000000000 
[   36.741645] x13: 000000000000ffff x12: 1f192c1a2d000100 
[   36.741649] x11: 0000000000000004 x10: 0000000000000002 
[   36.741652] x9 : 0000000000000004 x8 : ffffff80c671401c 
[   36.741655] x7 : 0000000000000000 x6 : 00000000115af000 
[   36.741658] x5 : 0000000000000eac x4 : 000000000000001c 
[   36.741661] x3 : 0000000000002e68 x2 : 00000000000000c0 
[   36.741664] x1 : 00000000ffff25a1 x0 : 0000000000000000 
[   36.741668] Call trace:
[   36.741707]  nl80211_send_chandef+0x170/0x180 [cfg80211]
[   36.741744]  nl80211_ch_switch_notify.isra.85.constprop.98+0xf4/0x188 [cfg80211]
[   36.741780]  cfg80211_ch_switch_notify+0x8c/0x168 [cfg80211]
[   36.741892]  rtw_cfg80211_ch_switch_notify+0xe8/0x138 [88XXau]
[   36.741958]  rtw_chk_start_clnt_join+0x88/0x90 [88XXau]
[   36.742019]  join_cmd_hdl+0x244/0x34c [88XXau]
[   36.742079]  rtw_cmd_thread+0x278/0x3d0 [88XXau]
[   36.742085]  kthread+0xfc/0x128
[   36.742093]  ret_from_fork+0x10/0x1c
[   36.742096] ---[ end trace 18282a529371ca1d ]---
guspoveda commented 4 years ago

@satmandu, The issue is within the function called rtw_cfg80211_ch_switch_notify. I've pasted it below. You need to initialize the struct cfg80211_chan_def chdef. I've done that below like this: struct cfg80211_chan_def chdef = {};

It should be around line 416 in os_dep/linux/ioctl_cfg80211.c. 

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 5, 0))
u8 rtw_cfg80211_ch_switch_notify(_adapter *adapter, u8 ch, u8 bw, u8 offset, u8 ht)
{
    struct wiphy *wiphy = adapter_to_wiphy(adapter);
    u8 ret = _SUCCESS;

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 8, 0))
    struct cfg80211_chan_def chdef  = {};

    ret = rtw_chbw_to_cfg80211_chan_def(wiphy, &chdef, ch, bw, offset, ht);
    if (ret != _SUCCESS)
        goto exit;
guspoveda commented 4 years ago

@satmandu I've noticed also that several static structs defined within os_dep/linux/ioctl_cfg80211.c and initialized using macros here https://github.com/aircrack-ng/rtl8812au/blob/76c3cf81fdc71af4338571b6404beb2ba3835a62/os_dep/linux/ioctl_cfg80211.c#L106 do not initialize all the fields within the structs. Could this be an issue?

For example, in kernel 5.4, the ieee80211_channel is defined as below within include/net/cfg80211.h:

struct ieee80211_channel {
    enum nl80211_band band;
    u32 center_freq;
    u16 hw_value;
    u32 flags;
    int max_antenna_gain;
    int max_power;
    int max_reg_power;
    bool beacon_found;
    u32 orig_flags;
    int orig_mag, orig_mpwr;
    enum nl80211_dfs_state dfs_state;
    unsigned long dfs_state_entered;
    unsigned int dfs_cac_ms;
};

Yet the macros that initialize the static channels defined in os_dep/linux/ioctl_cfg80211.c are defined like so:

#define CHAN2G(_channel, _freq, _flags) {           \
        .band           = NL80211_BAND_2GHZ,        \
        .center_freq        = (_freq),          \
        .hw_value       = (_channel),           \
        .flags          = (_flags),         \
        .max_antenna_gain   = 0,                \
        .max_power      = 30,               \
    }

#define CHAN5G(_channel, _flags) {              \
        .band           = NL80211_BAND_5GHZ,        \
        .center_freq        = 5000 + (5 * (_channel)),  \
        .hw_value       = (_channel),           \
        .flags          = (_flags),         \
        .max_antenna_gain   = 0,                \
        .max_power      = 30,               \
    }

Note all the fields missing from initialization.

ghost commented 4 years ago

I always had this error on x86_64 running fedora 31 and TP-Link Archer T9UH v1 [Realtek RTL8814AU]. Despite those errors it was quite stable until recently.

And within the past 24h I got 2 kernel panics!

What I did is reboot the machine which had the effect of running Fedora's latest stock kernel 5.6.18-200.fc31.x86_64. The first panic occured on version 5.6.4.2, so I upgraded to 5.7.0 and had another kernel panic since then. I'm using dkms.

gordboy commented 4 years ago

Good work guys. This was merely an annoyance until recently, now it is a nuisance and needs fixing.

I am looking at this and the kernel 5.8 update. Will report back when I have some kind of sane fixes in place.

On my laptop, I have kernel 5.4.40 and driver 5.6.4.2

https://github.com/gordboy/rtl8812au-5.6.4.2

and the warning is from

WARNING: CPU: 1 PID: 786 at net/wireless/nl80211.c:3157 nl80211_send_chandef+0x142/0x160 [cfg80211]

but the very next lines in the call stack is for

? __nla_put+0x20/0x30 nl80211_ch_switch_notify.constprop.0+0xcf/0x170 [cfg80211]

so something is clearly needing some love, the sooner the better.

gordboy commented 4 years ago

So early indications are that the first fix mentioned by @guspoveda fixes my first kernel dmesg mishap. But there is more badness.

After pulling the device in and out a few times and doing modprobe -r and modprobe and stuff, I started to get another problem

WARNING: CPU: 1 PID: 2234 at net/wireless/sme.c:756 __cfg80211_connect_result+0x3b9/0x3f0 [cfg80211]

but the call stack is not all that helpful

? apic_timer_interrupt+0xa/0x20 cfg80211_process_wdev_events+0x13a/0x1a0 [cfg80211] ? cfg80211_process_wdev_events+0x13a/0x1a0 [cfg80211]

none of which is in the driver. It may be that my cfg80211 is also faulty. I will report back with any more progress.

gordboy commented 4 years ago

Another idea to ponder, maybe the current badness is occasioned by newer compilers "optimizing" things away that should remain. Currently testing different compiler optimization flags on GCC 9.

eric-saintetienne commented 4 years ago

Am I the only one to experience regular kernel panics with my TP-Link Archer T9UH v1 [Realtek RTL8814AU]?

About one panic per week in average. I use the machine as a docker server (there's no physical ethernet cable to the Internet) so it may be because the wireless adapter is under more stress than the average user (who uses it with the laptop or desktop). I use Fedora 31 and experience panics with stock kernels: 5.6.18-200.fc31.x86_64 and more recently 5.6.19-200.fc31.x86_64, using dkms. I've tried both v5.6.4.2 (regularly updated) as well as v5.7.0 branches.

gordboy commented 4 years ago

What is the 5.7.0 branch? 5.7.0 is a kernel version, not a driver version ...

kimocoder commented 4 years ago

First post suggest issue on branch 5.7.0, latest one. The latest branch got a lot newer 8814au and 8821au HAL in it, but I see it as a little tricky yet, it works fine but isn't much maintained atm because I don't have time :+1:

kimocoder commented 4 years ago

Adding GCC 10 patches and others shortly.

gordboy commented 4 years ago

Hello @kimocoder is 5.7.0 from Realtek FTP site, cos the last one I thought before they shut down the FTP site was 5.6.4.2 ?

Also welcome back .... :+1:

kimocoder commented 4 years ago

No, v5.7.0 was added because the rtl8821au had a newer HAL that was added. while rtl8814au now is standalone.

gordboy commented 3 years ago

I haven't done much with this driver for quite some time. Let me read all this issue reports and work out what I am going to do.

gordboy commented 3 years ago

New driver 5.9.3.2 seems to have fixed this. Still testing.

kimocoder commented 3 years ago

Hi, haven't had much time to do much lately, lost overview atm, be back soon 👍

gordboy commented 3 years ago

Roger that good buddy, 10-4 and Wilco :)

CGarces commented 3 years ago

New driver 5.9.3.2 seems to have fixed this. Still testing.

You have access to newer drivers?

gordboy commented 3 years ago

Someone gave me a zip file. I don't have FTP access. And there is no changelog. But I have a new repo here -

https://github.com/gordboy/rtl8812au-5.9.3.2

And you can also grab it at the beginning, before any of my changes -

https://github.com/gordboy/rtl8812au-5.9.3.2/tree/1c1eb645f229759a7ab10a0805f60a9ae21a16de

Enjoy