Joseph:
I'm seeing an identical backtrace on one of my dads machines after upgrade to
a recent kernel; it's intermittent perhaps 1/4 ish boots
3.13.0-32-generic, so I say not fixed:
Jul 22 17:58:13 thedr kernel: [ 16.146863] fb: conflicting fb hw usage
inteldrmfb vs VESA VGA - removing generic driver
Jul 22 17:58:13 thedr kernel: [ 16.202062] Console: switching to colour dummy
device 80x25
Jul 22 17:58:13 thedr kernel: [ 16.202085] BUG: unable to handle kernel NULL
pointer dereference at 0000000000000138
Jul 22 17:58:13 thedr kernel: [ 16.202089] IP: [<ffffffff8145aad2>]
con_set_unimap+0x32/0x290
Jul 22 17:58:13 thedr kernel: [ 16.202091] PGD c6dc1067 PUD c6d8d067 PMD 0
Jul 22 17:58:13 thedr kernel: [ 16.202092] Oops: 0000 [#1] SMP
Jul 22 17:58:13 thedr kernel: [ 16.202104] Modules linked in:
intel_powerclamp snd_hda_codec coretemp i915(+) snd_hwdep lpc_ich snd_pcm
snd_page_alloc kvm_intel kvm snd_seq_midi snd_seq_midi_event crct10dif_pclmul
snd_rawmidi crc32_pclmul snd_seq drm_kms_helper drm i2c_algo_bit mei_me mei
ghash_clmulni_intel cryptd snd_seq_device snd_timer wmi parport_pc snd video
ppdev serio_raw soundcore mac_hid lp parport binfmt_misc hid_generic usbhid hid
r8169 mii
Jul 22 17:58:13 thedr kernel: [ 16.202106] CPU: 1 PID: 593 Comm: setfont Not
tainted 3.13.0-32-generic #57-Ubuntu
Jul 22 17:58:13 thedr kernel: [ 16.202106] Hardware name: System manufacturer
System Product Name/P8H61-MX R2.0, BIOS 0504 06/29/2012
Jul 22 17:58:13 thedr kernel: [ 16.202107] task: ffff8802126cdfc0 ti:
ffff8800c6c86000 task.ti: ffff8800c6c86000
Jul 22 17:58:13 thedr kernel: [ 16.202110] RIP: 0010:[<ffffffff8145aad2>]
[<ffffffff8145aad2>] con_set_unimap+0x32/0x290
Jul 22 17:58:13 thedr kernel: [ 16.202110] RSP: 0018:ffff8800c6c87d48
EFLAGS: 00010246
Jul 22 17:58:13 thedr kernel: [ 16.202111] RAX: ffff88021740c308 RBX:
0000000000e58b10 RCX: 000000000000c710
Jul 22 17:58:13 thedr kernel: [ 16.202111] RDX: 0000000000001278 RSI:
0000000000000296 RDI: 0000000000000296
Jul 22 17:58:13 thedr kernel: [ 16.202112] RBP: ffff8800c6c87db0 R08:
ffff8800c6c86000 R09: 0000000000000001
Jul 22 17:58:13 thedr kernel: [ 16.202113] R10: 0000000000000001 R11:
ffffea0008424740 R12: 0000000000000000
Jul 22 17:58:13 thedr kernel: [ 16.202113] R13: 0000000000004b67 R14:
ffff88021740c000 R15: ffff88021740c000
Jul 22 17:58:13 thedr kernel: [ 16.202114] FS: 00007fe0c4bf9740(0000)
GS:ffff88021fb00000(0000) knlGS:0000000000000000
Jul 22 17:58:13 thedr kernel: [ 16.202115] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Jul 22 17:58:13 thedr kernel: [ 16.202115] CR2: 0000000000000138 CR3:
00000000c6d92000 CR4: 00000000000407e0
Jul 22 17:58:13 thedr kernel: [ 16.202116] Stack:
Jul 22 17:58:13 thedr kernel: [ 16.202118] ffff8800c6c87d78 ffffffff813110ed
ffff8802126cdfc0 0000000000000000
Jul 22 17:58:13 thedr kernel: [ 16.202119] 0000000000004b67 ffff88021740c000
000002e1c6c87d88 ffff88021740c000
Jul 22 17:58:13 thedr kernel: [ 16.202120] 0000000000000000 0000000000000000
0000000000004b67 ffff88021740c000
Jul 22 17:58:13 thedr kernel: [ 16.202120] Call Trace:
Jul 22 17:58:13 thedr kernel: [ 16.202125] [<ffffffff813110ed>] ?
apparmor_capable+0x1d/0x130
Jul 22 17:58:13 thedr kernel: [ 16.202127] [<ffffffff81454973>]
vt_ioctl+0xe83/0x11c0
Jul 22 17:58:13 thedr kernel: [ 16.202129] [<ffffffff814484dd>]
tty_ioctl+0x26d/0xbb0
Jul 22 17:58:13 thedr kernel: [ 16.202132] [<ffffffff811cfd10>]
do_vfs_ioctl+0x2e0/0x4c0
Jul 22 17:58:13 thedr kernel: [ 16.202134] [<ffffffff8109ddf4>] ?
vtime_account_user+0x54/0x60
Jul 22 17:58:13 thedr kernel: [ 16.202136] [<ffffffff811cff71>]
SyS_ioctl+0x81/0xa0
Jul 22 17:58:13 thedr kernel: [ 16.202139] [<ffffffff8172c87f>]
tracesys+0xe1/0xe6
Jul 22 17:58:13 thedr kernel: [ 16.202149] Code: 89 e5 41 57 49 89 ff 41 56
41 55 41 54 53 48 89 d3 48 83 ec 40 48 89 7d d0 89 75 cc e8 38 0c c6 ff 49 8b
87 10 03 00 00 4c 8b 20 <41> 8b 84 24 38 01 00 00 85 c0 0f 85 38 02 00 00 66 83
7d cc 00
Jul 22 17:58:13 thedr kernel: [ 16.202151] RIP [<ffffffff8145aad2>]
con_set_unimap+0x32/0x290
Jul 22 17:58:13 thedr kernel: [ 16.202151] RSP <ffff8800c6c87d48>
Jul 22 17:58:13 thedr kernel: [ 16.202152] CR2: 0000000000000138
Jul 22 17:58:13 thedr kernel: [ 16.202153] ---[ end trace 2040d79b62a518c4
]---
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation
Core Processor Family Integrated Graphics Controller (rev 09)
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Summary changed:
- Kernel oops: fb: conflicting fb hw usage astdrmfb vs VESA VGA
+ Kernel oops: fb: conflicting fb hw usage astdrmfb vs VESA VGA (unable to
handle kernel NULL pointer dereference / con_set_unimap+0x32
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https://bugs.launchpad.net/bugs/1296660
Title:
Kernel oops: fb: conflicting fb hw usage astdrmfb vs VESA VGA (unable
to handle kernel NULL pointer dereference / con_set_unimap+0x32
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