from:"Nikolay Borisov"

[Bug 1912162] Re: NetworkManager managed wifi can't connect

2021-01-18 Thread Nikolay Borisov

Thanks for the reply, I opened the following upstream issue:
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/635

Though I'm not sure how effective that is going to be as ubuntu is not
using the latest upstream NM so they just tell me "please update to
latest version and report back"...

** Bug watch added: 
gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues #635
   https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/635

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  NetworkManager managed wifi can't connect

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[Bug 1912162] Re: NetworkManager managed wifi can't connect

2021-01-18 Thread Nikolay Borisov

Just to make it explicitly clear - I think there are 2 bugs involved - 1
is related to driver/firmware on older 5.4 kernel since on that version
I couldn't get the adapter to connect even with the
/etc/network/interfaces based configuration, but on kernel 5.10 it
works. This bug deals only with not being able to connect via
NetworkManager to my wifi even on 5.10. Once this is resolved I can go
back and try to do bisection of the kernel which patch enables the
/etc/networking/interfaces configuration to work.

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  NetworkManager managed wifi can't connect

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[Bug 1912162] Re: NetworkManager managed wifi can't connect

2021-01-18 Thread Nikolay Borisov

Here's the output wpa_supplicant as used from NetworkManager and under
which my intel ax200 based interface cannot connect.

** Attachment added: "wpa-supllicant-broken"
   
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1912162/+attachment/5454051/+files/wpa-supllicant-broken

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  NetworkManager managed wifi can't connect

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[Bug 1912162] [NEW] NetworkManager managed wifi can't connect

2021-01-18 Thread Nikolay Borisov

Public bug reported:

My computer has an built-in intel ax200 adapter (the motherboard is
asock taichi x570). With the latest stable 5.4 kernel on Ubuntu Focal
20.04 I cannot get the card to connect to my home wifi (2.4ghz). The
errors I get are :

iwlwifi :05:00.0: No beacon heard and the time event is over already...
wlp5s0: Connection to AP 30:b5:c2:75:a4:ce lost
wlp5s0: send auth to 30:b5:c2:75:a4:ce (try 2/3)

Initially I thought this could be due to a problem with the iwlwifi
driver and the firmware used. I upgraded to a custom-build (using
ubuntu's configuration) 5.10 kernel And now the errors I was getting
were:


[нд яну 17 22:01:33 2021] iwlwifi :05:00.0: No beacon heard and the session 
protection is over already...
[нд яну 17 22:01:33 2021] wlp5s0: Connection to AP 30:b5:c2:75:a4:ce lost
[нд яну 17 22:01:33 2021] wlp5s0: send auth to 30:b5:c2:75:a4:ce (try 3/3)
[нд яну 17 22:01:34 2021] wlp5s0: authentication with 30:b5:c2:75:a4:ce timed 
out
[нд яну 17 22:01:35 2021] wlp5s0: authenticate with 30:b5:c2:75:a4:ce
[нд яну 17 22:01:35 2021] wlp5s0: send auth to 30:b5:c2:75:a4:ce (try 1/3)
[нд яну 17 22:01:36 2021] iwlwifi :05:00.0: No beacon heard and the session 
protection is over already...
[нд яну 17 22:01:36 2021] wlp5s0: Connection to AP 30:b5:c2:75:a4:ce lost
[нд яну 17 22:01:36 2021] wlp5s0: send auth to 30:b5:c2:75:a4:ce (try 2/3)
[нд яну 17 22:01:37 2021] iwlwifi :05:00.0: No beacon heard and the session 
protection is over already...
[нд яну 17 22:01:37 2021] wlp5s0: Connection to AP 30:b5:c2:75:a4:ce lost
[нд яну 17 22:01:37 2021] wlp5s0: send auth to 30:b5:c2:75:a4:ce (try 3/3)


The change of message is because newer versions of the driver/firmware have 
moved part of the processing in firmware. At this point I was willing to accept 
this is an issue with the kernel. However, I added the following configuration 
to /etc/network/interfaces: 

allow-hotplug wlp5s0
iface wlp5s0 inet dhcp  
  wpa-ssid HOME 
  
  wpa-psk 
 
  wpa-debug-level 2 


And what do you know - I was able to connect to my home wifi with no problems. 
I'm attaching the output of wpa_supplicant run with -dd from both the 
/etc/network/interfaces-based configuration (wpa_supplicant_working) and from 
the NetworkManager managed one ( I have edited 
/lib/systemd/system/wpa_supplicant.service to include -f 
/var/log/wpa_supplicant -dd) options. I wasn't able to figure any glaring 
differences between the flows of the two.

** Affects: network-manager (Ubuntu)
 Importance: Undecided
 Status: New

** Attachment added: "output of working wpa supplicant from ifupdown scripts"
   
https://bugs.launchpad.net/bugs/1912162/+attachment/5454050/+files/wpa-supllicant-working

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[Bug 1787801] Re: openvpn does not work with ecryptfs setup

2018-08-19 Thread Nikolay Borisov

Ok, thanks for the tip I didn't know that. If this is then coming from
upstream I guess a bug report is warranted there as well.

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  openvpn does not work with ecryptfs setup

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[Bug 1787801] [NEW] openvpn does not work with ecryptfs setup

2018-08-19 Thread Nikolay Borisov

Public bug reported:

I have an ecryptfs in which my decrypted mount point is
/home/$user/Private . Additionally my openvpn setup is such that under
/etc/openvpn I have symlinks to the actual files which are located in
/home/$user/Private/openvpn. When I try to start openvpn (bear in mind
that this setup worked on 16.04, I upgraded the machine) I get an error
:

fisk-mobile ovpn-CONF-FILE[25710]: Options error: In [CMD-LINE]:1: Error
opening configuration file: /etc/openvpn/CONF-FILE.conf

Needless to say that manually running openvpn --config /etc/openvpn
/CONF-FILE.conf (which is a symlink ) worked flawlessly.

After a bit of headbanging it turned out the issue is caused by the
ProtectHome directive of the openvpn service file under:
/lib/systemd/system/openvpn@.service - the same directive also applies
to openvpn-client@.service service as well. Changing the value from
'true' to 'read-only' resolved the issue.

In my opinion having the config files on an encrypted partition under
/home/$USER is not that uncommon and so the unit file should be changed
to at least allow RO permissions. Additionally, this setup worked on
ubuntu 16.04 and I just performed an upgrade which broke the existing
setup so I consider this a regression as well.

** Affects: openvpn (Ubuntu)
 Importance: Undecided
 Status: New

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[Bug 1724977] Re: two mouse cursors visible at the same time on rotated screen

2018-04-07 Thread Nikolay Borisov

Is the fix for this bug going to make it to 18.04 release?

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  two mouse cursors visible at the same time on rotated screen

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[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

2016-09-24 Thread Nikolay Borisov

This is still not fixed in the latest ubuntu kernel - 4.4.0-38-generic
#57-Ubuntu. Considering the low-impact of the fix is this going to go in
future 4.4 releases?

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  Kernel crashes from time to time when using ftrace

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[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

2016-08-04 Thread Nikolay Borisov

Ping on the issue. I now also managed to trigger it while setting a very
simple systemtap probe:

probe kernel.function("generic_fillattr") {
printf("Uid in inode: %u gid: %u\n", $inode->i_uid->val, 
$inode->i_gid->val);
}

Running this resulted in:

[854807.910390] invalid opcode:  [#1] SMP 
[854807.911398] CPU: 6 PID: 1 Comm: systemd Tainted: G   OE   
4.4.0-31-generic #50-Ubuntu
[854807.911436] Hardware name: Dell Inc. Precision T1650/0X9M3X, BIOS A20 
12/21/2015
[854807.911469] task: 88040be58000 ti: 88040be6 task.ti: 
88040be6
[854807.911503] RIP: 0010:[]  [] 
ftrace_stub+0x0/0x8
[854807.911544] RSP: 0018:88040be63e50  EFLAGS: 00010246
[854807.911569] RAX:  RBX: 880405bcf410 RCX: 
88040378c6c0
[854807.911611] RDX: 88040d891b60 RSI: 88040be63ec0 RDI: 
88014b51dd78
[854807.911632] RBP: 88040be63e60 R08: 88014b51dd78 R09: 
88040be63e20
[854807.911672] R10: 7fc4541498c0 R11:  R12: 
88040be63ec0
[854807.911703] R13: 88040be63ec0 R14:  R15: 
55de063aff00
[854807.911736] FS:  7fc4541498c0() GS:88041e38() 
knlGS:
[854807.911771] CS:  0010 DS:  ES:  CR0: 80050033
[854807.911797] CR2: 7f891558de00 CR3: 000405a4e000 CR4: 
001406e0
[854807.911828] Stack:
[854807.911839]  81211cd5 81211da6 88040be63e80 
81211fb6
[854807.911878]  880405bcf400 880405bcf400 88040be63eb0 
81211ff3
[854807.911917]  00088000 7ffc05f286b0 000a 
07ff
[854807.911956] Call Trace:
[854807.911972]  [] ? generic_fillattr+0x5/0xa0
[854807.911999]  [] ? vfs_getattr_nosec+0x36/0x40
[854807.912027]  [] vfs_getattr+0x26/0x30
[854807.912052]  [] vfs_fstat+0x33/0x60
[854807.912076]  [] SYSC_newfstat+0x24/0x60
[854807.912102]  [] ? do_sys_open+0x1bf/0x2a0
[854807.912129]  [] SyS_newfstat+0xe/0x10
[854807.912154]  [] entry_SYSCALL_64_fastpath+0x16/0x71
[854807.912183] Code: 8b 44 24 48 48 8b 7c 24 70 48 8b 74 24 68 48 8b 54 24 60 
48 8b 4c 24 58 48 8b 44 24 50 48 8b 6c 24 20 48 81 c4 d0 00 00 00 e9 fd  ff 
ff 80 00 00 00 00 9c 55 ff 74 24 18 55 48 89 e5 ff 74 24 
[854807.912392] RIP  [] ftrace_stub+0x0/0x8
[854807.912420]  RSP 

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[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

2016-07-28 Thread Nikolay Borisov

Original report of the exact same issue:
https://lkml.org/lkml/2016/5/13/327

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[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

2016-07-28 Thread Nikolay Borisov

I think the fix for this crash is this upstream commit:
8329e818f14926a6040df86b2668568bde342ebf

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[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

2016-07-25 Thread Nikolay Borisov

Is there a way to obtain a vmlinux image for the upstream kernel as
built by ubuntu (without having to compile locally) so that I can
compare the disassemblies of the ftrace_stub ?

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[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

2016-07-25 Thread Nikolay Borisov

I tried with the upstream kernel :
nborisov@fisk:~$ uname -a 
Linux fisk 4.7.0-040700-generic #201607241632 SMP Sun Jul 24 20:34:30 UTC 2016 
x86_64 x86_64 x86_64 GNU/Linux

In the meantime I managed to find a sequence which can trigger this 100%
of the time on the ubuntu kernel. The following commands have to be one
after the other:

sudo trace-cmd record -p function_graph -l vfs_read -F ls
sudo trace-cmd record -p function -l vfs_read -F ls


** Tags added: kernel-fixed-upstream

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

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[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

2016-07-23 Thread Nikolay Borisov

So here is a disassembly of the ftrace functions:

0x8183026b :mov$0x0,%rcx
0x81830272 :   callq  0x81156d80 

0x81830277 : mov0x40(%rsp),%r9
0x8183027c :mov0x48(%rsp),%r8
0x81830281 :mov0x70(%rsp),%rdi
0x81830286 :mov0x68(%rsp),%rsi
0x8183028b :mov0x60(%rsp),%rdx
0x81830290 :mov0x58(%rsp),%rcx
0x81830295 :mov0x50(%rsp),%rax
0x8183029a :mov0x20(%rsp),%rbp
0x8183029f :add$0xd0,%rsp
0x818302a6 : jmpq   0x818302a8 

And here is disassembly of ftrace_stub, which clearly looks broken: 
crash> dis ftrace_stub 10
0x818302a8 :   (bad)  
0x818302a9 : (bad)  
0x818302aa : incl   0x0(%rax)
0x818302b0 :pushfq 
0x818302b1 :  push   %rbp
0x818302b2 :  pushq  0x18(%rsp)
0x818302b6 :  push   %rbp
0x818302b7 :  mov%rsp,%rbp
0x818302ba : pushq  0x20(%rsp)
0x818302be : push   %rbp

crash> rd 0x818302a8
818302a8:  80ff

So I guess the reason is that ftrace_stub somehow gets corrupted.

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[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

2016-07-23 Thread Nikolay Borisov

** Attachment added: "uname-a.log"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1605843/+attachment/4705813/+files/uname-a.log

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

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[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

2016-07-23 Thread Nikolay Borisov

Dmesg as seen from the crash dump image.

** Attachment added: "dmesg.log"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1605843/+attachment/4705811/+files/dmesg.log

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[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

2016-07-23 Thread Nikolay Borisov

** Attachment added: "version.log"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1605843/+attachment/4705812/+files/version.log

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[Bug 1605843] [NEW] Kernel crashes from time to time when using ftrace

2016-07-23 Thread Nikolay Borisov

Public bug reported:

While performing some tracing suing ftrace-cmd I came across the
following OOPS:

[  333.051723] invalid opcode:  [#1] SMP 
[  333.051742] Modules linked in: drbg ansi_cprng ctr ccm xt_CHECKSUM 
iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 
arc4 bridge stp llc ebtable_filter ebtables ath9k_htc ath9k_common ath9k_hw ath 
mac80211 cfg80211 binfmt_misc snd_hda_codec_hdmi dcdbas dell_smm_hwmon 
snd_hda_codec_realtek snd_hda_codec_generic intel_rapl uvcvideo snd_hda_intel 
x86_pkg_temp_thermal intel_powerclamp coretemp videobuf2_vmalloc snd_hda_codec 
videobuf2_memops input_leds videobuf2_v4l2 snd_usb_audio crct10dif_pclmul 
videobuf2_core snd_hda_core v4l2_common crc32_pclmul snd_usbmidi_lib videodev 
snd_hwdep aesni_intel media snd_pcm aes_x86_64 lrw gf128mul glue_helper 
ablk_helper cryptd snd_seq_midi snd_seq_midi_event snd_rawmidi serio_raw 
snd_seq snd_seq_device snd_timer lpc_ich snd ie31200_edac
[  333.051972]  edac_core soundcore mei_me mei 8250_fintek mac_hid kvm_intel 
ip6t_REJECT nf_reject_ipv6 kvm nf_log_ipv6 irqbypass xt_hl ip6t_rt 
nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 nf_log_ipv4 
nf_log_common xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 
nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns 
nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack 
iptable_filter ip_tables parport_pc x_tables ppdev lp parport autofs4 hid_apple 
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
hid_generic usbhid hid raid6_pq libcrc32c raid1 raid0 multipath linear 
dm_mirror dm_region_hash dm_log i915 i2c_algo_bit drm_kms_helper psmouse 
syscopyarea sysfillrect sysimgblt fb_sys_fops e1000e ahci libahci drm ptp
[  333.052206]  pps_core fjes video
[  333.052216] CPU: 1 PID: 5616 Comm: trace-cmd Not tainted 4.4.0-31-generic 
#50-Ubuntu
[  333.052235] Hardware name: Dell Inc. Precision T1650/0X9M3X, BIOS A15 
09/09/2013
[  333.052254] task: 8804066b1b80 ti: 88040b474000 task.ti: 
88040b474000
[  333.052272] RIP: 0010:[]  [] 
ftrace_stub+0x0/0x8
[  333.052296] RSP: 0018:88040b477f00  EFLAGS: 00010286
[  333.052309] RAX:  RBX: 8800d9a4ec00 RCX: 88040b477f18
[  333.052326] RDX: 2000 RSI: 0237d690 RDI: 8800d9a4ec00
[  333.052343] RBP: 88040b477f48 R08: 7f89df102cf8 R09: 0021
[  333.052360] R10: 000d R11: 0246 R12: 8800d9a4ec00
[  333.052377] R13: 0237d690 R14: 2000 R15: 0237d690
[  333.052395] FS:  7f89df50f700() GS:88041e24() 
knlGS:
[  333.052414] CS:  0010 DS:  ES:  CR0: 80050033
[  333.052428] CR2: 00a78d88 CR3: 0003c3542000 CR4: 001406e0
[  333.052445] Stack:
[  333.052451]  8120d165 8120df35 7fff364487e5 

[  333.052473]  eee5d05c   
0006
[  333.052494]  0008 2000 8182db32 
0004
[  333.052515] Call Trace:
[  333.052525]  [] ? vfs_read+0x5/0x130
[  333.052538]  [] ? SyS_read+0x55/0xc0
[  333.052553]  [] entry_SYSCALL_64_fastpath+0x16/0x71
[  333.052568] Code: 8b 44 24 48 48 8b 7c 24 70 48 8b 74 24 68 48 8b 54 24 60 
48 8b 4c 24 58 48 8b 44 24 50 48 8b 6c 24 20 48 81 c4 d0 00 00 00 e9 fd  ff 
ff 80 00 00 00 00 9c 55 ff 74 24 18 55 48 89 e5 ff 74 24 
[  333.052685] RIP  [] ftrace_stub+0x0/0x8
[  333.052700]  RSP 


All code

   0:   8b 44 24 48 mov0x48(%rsp),%eax
   4:   48 8b 7c 24 70  mov0x70(%rsp),%rdi
   9:   48 8b 74 24 68  mov0x68(%rsp),%rsi
   e:   48 8b 54 24 60  mov0x60(%rsp),%rdx
  13:   48 8b 4c 24 58  mov0x58(%rsp),%rcx
  18:   48 8b 44 24 50  mov0x50(%rsp),%rax
  1d:   48 8b 6c 24 20  mov0x20(%rsp),%rbp
  22:   48 81 c4 d0 00 00 00add$0xd0,%rsp
  29:*  e9 fd ff ff ff  jmpq   0x2b <-- trapping instruction
  2e:   80 00 00addb   $0x0,(%rax)
  31:   00 00   add%al,(%rax)
  33:   9c  pushfq 
  34:   55  push   %rbp
  35:   ff 74 24 18 pushq  0x18(%rsp)
  39:   55  push   %rbp
  3a:   48 89 e5mov%rsp,%rbp
  3d:   ff  .byte 0xff
  3e:   74 24   je 0x64

Code starting with the faulting instruction
===
   0:   ff  (bad)  
   1:   ff  (bad)  
   2:   ff 80 00 00 00 00   incl   0x0(%rax)
   8:   9c  pushfq 
   9:   55  push   %rbp
   a:   ff 74 24 18 pushq  0x18(%rsp)
   e:   55  push   %rbp
   f:   48 89 e5mov%rsp,%rbp
  12:   ff  .byte

[Bug 1912162] Re: NetworkManager managed wifi can't connect

[Bug 1912162] Re: NetworkManager managed wifi can't connect

[Bug 1912162] Re: NetworkManager managed wifi can't connect

[Bug 1912162] [NEW] NetworkManager managed wifi can't connect

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[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

[Bug 1605843] Re: Kernel crashes from time to time when using ftrace

[Bug 1605843] [NEW] Kernel crashes from time to time when using ftrace

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