[Bug 1937946] Re: Kernel hangs

[Tim Lebedkov]

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

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Title:
  Kernel hangs

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[Bug 1937946] Re: Kernel hangs

[Tim Lebedkov]

apport information

** Tags added: apport-collected

** Description changed:

  tim@timpc:~/Dokumente/nbased-gui$ lsb_release -rd
  Description:Ubuntu 20.04.2 LTS
  Release:20.04
  
  This is probably the relevant part from /var/log/kern.log
  
  Jul 25 16:34:24 timpc kernel: [16627.134024] BUG: kernel NULL pointer 
dereference, address: 
  Jul 25 16:34:24 timpc kernel: [16627.134028] #PF: supervisor write access in 
kernel mode
  Jul 25 16:34:24 timpc kernel: [16627.134030] #PF: error_code(0x0002) - 
not-present page
  Jul 25 16:34:24 timpc kernel: [16627.134031] PGD 0 P4D 0 
  Jul 25 16:34:24 timpc kernel: [16627.134035] Oops: 0002 [#1] SMP NOPTI
  Jul 25 16:34:24 timpc kernel: [16627.134038] CPU: 4 PID: 3506 Comm: Timer 
Tainted: G   OE 5.4.0-80-generic #90-Ubuntu
  Jul 25 16:34:24 timpc kernel: [16627.134040] Hardware name: Gigabyte 
Technology Co., Ltd. B450 AORUS PRO/B450 AORUS PRO-CF, BIOS F2 08/08/2018
  Jul 25 16:34:24 timpc kernel: [16627.134046] RIP: 0010:rb_erase+0x241/0x370
  Jul 25 16:34:24 timpc kernel: [16627.134049] Code: 3b 79 10 0f 84 94 00 00 00 
4c 89 41 08 4d 85 c0 75 4c a8 01 0f 85 72 fe ff ff c3 48 89 cf 48 89 51 10 48 
83 cf 01 48 89 48 08 <48> 89 3a 48 8b 39 48 89 38 48 89 01 48 83 e7 fc 74 6a 48 
3b 4f 10
  Jul 25 16:34:24 timpc kernel: [16627.134051] RSP: 0018:9b6008727c60 
EFLAGS: 00010086
  Jul 25 16:34:24 timpc kernel: [16627.134053] RAX: 8fc2bee1e4a0 RBX: 
9b6008727d30 RCX: 9b6008277db0
  Jul 25 16:34:24 timpc kernel: [16627.134054] RDX:  RSI: 
8fc2bee1dfe0 RDI: 9b6008277db1
  Jul 25 16:34:24 timpc kernel: [16627.134056] RBP: 9b6008727c78 R08: 
 R09: 
  Jul 25 16:34:24 timpc kernel: [16627.134057] R10: 8fc2bed29ac0 R11: 
8fc2bed29aa0 R12: 8fc2bee1dfe0
  Jul 25 16:34:24 timpc kernel: [16627.134058] R13:  R14: 
8fc2bee1df80 R15: 
  Jul 25 16:34:24 timpc kernel: [16627.134060] FS:  7f082ae56700() 
GS:8fc2bed0() knlGS:
  Jul 25 16:34:24 timpc kernel: [16627.134061] CS:  0010 DS:  ES:  CR0: 
80050033
  Jul 25 16:34:24 timpc kernel: [16627.134063] CR2:  CR3: 
000738206000 CR4: 003406e0
  Jul 25 16:34:24 timpc kernel: [16627.134064] Call Trace:
  Jul 25 16:34:24 timpc kernel: [16627.134067]  ? timerqueue_del+0x24/0x50
  Jul 25 16:34:24 timpc kernel: [16627.134073]  __remove_hrtimer+0x3c/0x90
  Jul 25 16:34:24 timpc kernel: [16627.134076]  hrtimer_try_to_cancel+0xb7/0x110
  Jul 25 16:34:24 timpc kernel: [16627.134078]  hrtimer_cancel+0x15/0x20
  Jul 25 16:34:24 timpc kernel: [16627.134082]  futex_wait+0x21b/0x290
  Jul 25 16:34:24 timpc kernel: [16627.134085]  ? hrtimer_init_sleeper+0x90/0x90
  Jul 25 16:34:24 timpc kernel: [16627.134088]  do_futex+0x157/0x4d0
  Jul 25 16:34:24 timpc kernel: [16627.134092]  ? _copy_from_user+0x3e/0x60
  Jul 25 16:34:24 timpc kernel: [16627.134095]  __x64_sys_futex+0x13f/0x170
  Jul 25 16:34:24 timpc kernel: [16627.134099]  do_syscall_64+0x57/0x190
  Jul 25 16:34:24 timpc kernel: [16627.134102]  
entry_SYSCALL_64_after_hwframe+0x44/0xa9
  Jul 25 16:34:24 timpc kernel: [16627.134105] RIP: 0033:0x7f083c67d7b1
  Jul 25 16:34:24 timpc kernel: [16627.134107] Code: 01 00 00 e8 51 38 00 00 4c 
8b 54 24 18 8b 74 24 40 31 d2 89 44 24 44 41 b9 ff ff ff ff 45 31 c0 4c 89 f7 
b8 ca 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 73 01 00 00 8b 7c 24 44 e8 7a 38 
00 00 31
  Jul 25 16:34:24 timpc kernel: [16627.134109] RSP: 002b:7f082ae55980 
EFLAGS: 0246 ORIG_RAX: 00ca
  Jul 25 16:34:24 timpc kernel: [16627.134111] RAX: ffda RBX: 
7f0830636e48 RCX: 7f083c67d7b1
  Jul 25 16:34:24 timpc kernel: [16627.134112] RDX:  RSI: 
0089 RDI: 7f0830636e60
  Jul 25 16:34:24 timpc kernel: [16627.134113] RBP: 7f0830636e38 R08: 
 R09: 
  Jul 25 16:34:24 timpc kernel: [16627.134114] R10: 7f082ae55a68 R11: 
0246 R12: 7f0830636e5c
  Jul 25 16:34:24 timpc kernel: [16627.134115] R13: 7f0830636e08 R14: 
7f0830636e60 R15: 7f082ae559d0
  Jul 25 16:34:24 timpc kernel: [16627.134117] Modules linked in: 
vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) ccm edac_mce_amd kvm_amd xt_CHECKSUM 
xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp ip6table_mangle 
ip6table_nat iptable_mangle iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 
nf_defrag_ipv4 nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter 
bpfilter bridge stp llc binfmt_misc nls_iso8859_1 rtl8xxxu 
snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi 
rtl8192cu snd_hda_intel rtl_usb snd_intel_dspcfg rtl8192c_common snd_hda_codec 
rtlwifi snd_hda_core mac80211 snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event 
cfg80211 joydev snd_rawmidi input_leds radeon kvm crct10dif_pclmul 
ghash_clmulni_intel aesni_intel snd_seq libarc4 

[Bug 1937946] Re: Kernel hangs

[Brian Murray]

** Package changed: kernel-package (Ubuntu) => linux (Ubuntu)

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Title:
  Kernel hangs

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[Bug 1937946] Re: Kernel hangs

[Tim Lebedkov]

** Package changed: ubuntu => kernel-package (Ubuntu)

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Title:
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[Bug 1937946] Re: Kernel hangs

[Ubuntu Foundations Team Bug Bot]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.  It seems that your bug report is not filed about a
specific source package though, rather it is just filed against Ubuntu
in general.  It is important that bug reports be filed about source
packages so that people interested in the package can find the bugs
about it.  You can find some hints about determining what package your
bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage.
You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit
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package name in the text box next to the word Package.

[This is an automated message.  I apologize if it reached you
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** Tags added: bot-comment

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Title:
  Kernel hangs

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[Bug 1937946] Re: Kernel hangs

[Tim Lebedkov]

This is not reproducible. The average time to fail is about 100 hours.

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Title:
  Kernel hangs

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