Thanks for the pointers, James.
On 12.10.2017 23:24, James Cameron wrote:
There's a good chance this problem has been fixed already. You
are using a v4.4 kernel with many patches applied by Ubuntu. Here, we
are more concerned with the latest kernels, and v4.4 is quite old.
Please test some of the later kernels, see
https://wiki.ubuntu.com/Kernel/MainlineBuilds
In particular, test v4.13 or v4.14-rc4.
I'm having a hard time with that, because the virtualbox-dkms build
fails with the 4.13 kernel, and virtualbox unfortunately is essential.
If the problem still happens, capture the same information and send it
again as a reply.
If the problem doesn't happen, then you can either continue to use the
new kernel, or find when the problem was fixed; a long but rewarding
process.
Should the problem have been fixed for v4.10, you might also switch to
using the Ubuntu package linux-generic-hwe-16.04.
https://wiki.ubuntu.com/Kernel/RollingLTSEnablementStack#hwe-16.04
The 4.10 kernel readily produced this one
------------[ cut here ]------------
WARNING: CPU: 4 PID: 1617 at
/build/linux-hwe-IJy1zi/linux-hwe-4.10.0/drivers/net/wireless/intel/iwlwifi/mvm/tx.c:510
iwl_mvm_tx_skb_non_sta+0x39a/0x440 [iwlmvm]
Modules linked in: bnep ccm pci_stub vboxpci(OE) vboxnetadp(OE)
vboxnetflt(OE) vboxdrv(OE) nf_log_ipv4 nf_log_common xt_LOG xt_tcpudp
nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack
iptable_filter ip_tables x_tables snd_hda_codec_hdmi arc4 iwlmvm
mac80211 snd_hda_codec_realtek snd_hda_codec_generic intel_rapl
x86_pkg_temp_thermal intel_powerclamp iwlwifi coretemp snd_hda_intel
snd_hda_codec kvm_intel snd_hda_core snd_hwdep kvm input_leds irqbypass
crct10dif_pclmul snd_pcm bridge crc32_pclmul joydev stp llc
ghash_clmulni_intel snd_seq_midi pcbc snd_seq_midi_event snd_rawmidi
aesni_intel snd_seq aes_x86_64 crypto_simd snd_seq_device glue_helper
cfg80211 cryptd snd_timer intel_cstate snd intel_rapl_perf soundcore
shpchp mei_me hci_uart mei btbcm btqca btintel bluetooth intel_lpss_acpi
acpi_als mac_hid intel_lpss kfifo_buf tpm_infineon industrialio
acpi_pad parport_pc ppdev lp parport autofs4 i915 e1000e i2c_algo_bit
drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops e100
hid_generic ptp i2c_hid ahci mii drm pps_core pinctrl_sunrisepoint
libahci usbhid e1000 hid wmi video pinctrl_intel fjes
CPU: 4 PID: 1617 Comm: hostapd Tainted: G OE
4.10.0-37-generic #41~16.04.1-Ubuntu
Hardware name: Gigabyte Technology Co., Ltd. Z170M-D3H/Z170M-D3H-CF,
BIOS F20 11/17/2016
Call Trace:
dump_stack+0x63/0x90
__warn+0xcb/0xf0
warn_slowpath_null+0x1d/0x20
iwl_mvm_tx_skb_non_sta+0x39a/0x440 [iwlmvm]
iwl_mvm_mac_tx+0x11e/0x1d0 [iwlmvm]
ieee80211_tx_frags+0x14b/0x220 [mac80211]
__ieee80211_tx+0x81/0x180 [mac80211]
ieee80211_tx+0x10f/0x150 [mac80211]
ieee80211_xmit+0x9b/0xf0 [mac80211]
__ieee80211_tx_skb_tid_band+0x5c/0x70 [mac80211]
ieee80211_mgmt_tx+0x42c/0x4a0 [mac80211]
cfg80211_mlme_mgmt_tx+0xdc/0x310 [cfg80211]
nl80211_tx_mgmt+0x212/0x360 [cfg80211]
genl_family_rcv_msg+0x1db/0x3b0
? skb_queue_tail+0x43/0x50
genl_rcv_msg+0x59/0xa0
? genl_notify+0x80/0x80
netlink_rcv_skb+0xa4/0xc0
genl_rcv+0x28/0x40
netlink_unicast+0x18c/0x240
netlink_sendmsg+0x2fb/0x3a0
? aa_sock_msg_perm+0x61/0x150
sock_sendmsg+0x38/0x50
___sys_sendmsg+0x2c2/0x2d0
? sock_sendmsg+0x38/0x50
? SYSC_sendto+0x101/0x190
? __check_object_size+0x108/0x1e3
? _copy_to_user+0x55/0x60
__sys_sendmsg+0x54/0x90
SyS_sendmsg+0x12/0x20
entry_SYSCALL_64_fastpath+0x1e/0xad
RIP: 0033:0x7fcc38cfe450
RSP: 002b:00007fffdefc9b18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000563e91285590 RCX: 00007fcc38cfe450
RDX: 0000000000000000 RSI: 00007fffdefc9ba0 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000563e91283a70
R10: 0000000000001000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000009 R14: 0000000000000000 R15: 0000000000000000
---[ end trace 4d9a544d3976536e ]---
--
Mit freundlichen Grüßen/Best regards
Mario Theodoridis
