[Bug 1628686] Re: kernel BUG at linux-4.8.0/mm/usercopy.c:75!

2019-10-03 Thread Po-Hsu Lin
Closing this bug with Won't fix as this kernel / release is no longer supported.
Please feel free to open a new bug report if you're still experiencing this on 
a newer release (Bionic 18.04.3 / Disco 19.04)
Thanks!

** Changed in: linux (Ubuntu)
   Status: Triaged => Won't Fix

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  kernel BUG at linux-4.8.0/mm/usercopy.c:75!

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[Bug 1628686] Re: kernel BUG at linux-4.8.0/mm/usercopy.c:75!

2016-10-29 Thread David Lee
@Joseph Salisbury: I've upgraded to the latest kernel and the problem
still persists. I'm starting to think it's a problem with the Blackmagic
drivers?

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  kernel BUG at linux-4.8.0/mm/usercopy.c:75!

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[Bug 1628686] Re: kernel BUG at linux-4.8.0/mm/usercopy.c:75!

2016-10-24 Thread Joseph Salisbury
@David Lee, that indicates that HARDENED_USERCOPY_PAGESPAN is not set.

@Vinson Lee, do you still see this bug with the latest -proposed kernel
as well?

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[Bug 1628686] Re: kernel BUG at linux-4.8.0/mm/usercopy.c:75!

2016-10-21 Thread David Lee
I ran the command as requested, and got nothing

root@helen:~# grep HARDENED_USERCOPY_PAGESPAN= /boot/config-`uname -r`
root@helen:~# 

There appears to be another kernel update today. However that update did
not help with the issue.

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[Bug 1628686] Re: kernel BUG at linux-4.8.0/mm/usercopy.c:75!

2016-10-20 Thread Joseph Salisbury
Hi David,

Can you run the following command with that running -proposed kernel:

grep HARDENED_USERCOPY_PAGESPAN= /boot/config-`uname -r`

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[Bug 1628686] Re: kernel BUG at linux-4.8.0/mm/usercopy.c:75!

2016-10-19 Thread David Lee
Upgraded to proposed kernel.

Linux helen 4.8.0-25-generic #27-Ubuntu SMP Thu Oct 13 03:34:50 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux

Issue still occurs:

[   75.257763] usercopy: kernel memory overwrite attempt detected to 
9dfb48493d38 () (16 bytes)
[   75.257791] [ cut here ]
[   75.257793] kernel BUG at /build/linux-rb6V7L/linux-4.8.0/mm/usercopy.c:75!
[   75.257795] invalid opcode:  [#3] SMP
[   75.257797] Modules linked in: xfrm_user xfrm4_tunnel tunnel4 ipcomp 
xfrm_ipcomp esp4 ah4 af_key xfrm_algo snd_hrtimer binfmt_misc nls_iso8859_1 
ir_lirc_codec lirc_dev rc_rc6_mce mceusb snd_hda_codec_via 
snd_hda_codec_generic kvm_amd kvm nvidia_uvm(POE) irqbypass input_leds 
serio_raw blackmagic(POE) k8temp snd_usb_audio snd_hda_codec_hdmi 
snd_usbmidi_lib gspca_sonixj gspca_main v4l2_common videodev media rc_imon_pad 
imon rc_core snd_hda_intel snd_ctxfi snd_hda_codec snd_hda_core snd_seq_midi 
snd_seq_midi_event shpchp snd_hwdep snd_rawmidi snd_seq snd_pcm snd_seq_device 
snd_timer snd soundcore asus_atk0110 i2c_nforce2 wmi mac_hid nfsd auth_rpcgss 
nfs_acl lockd grace sunrpc parport_pc ppdev lp parport ip_tables x_tables 
autofs4 dm_mirror dm_region_hash dm_log btrfs raid10 raid1 raid0 dm_raid raid456
[   75.257835]  async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
raid6_pq libcrc32c pata_acpi nvidia(POE) psmouse drm video firewire_ohci 
firewire_core floppy ahci fjes forcedeth libahci crc_itu_t pata_amd
[   75.257848] CPU: 1 PID: 2837 Comm: BlackmagicFirmw Tainted: P  DOE   
4.8.0-25-generic #27-Ubuntu
[   75.257850] Hardware name: System manufacturer System Product Name/M4N78 
PRO, BIOS 130304/13/2011
[   75.257852] task: 9dfb487e0d00 task.stack: 9dfb4849
[   75.257854] RIP: 0010:[]  [] 
__check_object_size+0x77/0x1dc
[   75.257860] RSP: 0018:9dfb48493ca0  EFLAGS: 00010286
[   75.257862] RAX: 0063 RBX: 9dfb48493d38 RCX: 
[   75.257863] RDX:  RSI: 9dfbf7c4dc68 RDI: 9dfbf7c4dc68
[   75.257865] RBP: 9dfb48493cc0 R08: 0003eee3 R09: 0005
[   75.257867] R10: 9dfb5fc43238 R11: 040a R12: 0010
[   75.257868] R13:  R14: 9dfb48493d48 R15: 7ffdccd9da50
[   75.257870] FS:  7fbd30601780() GS:9dfbf7c4() 
knlGS:
[   75.257872] CS:  0010 DS:  ES:  CR0: 80050033
[   75.257874] CR2: 7fbd2f3e4150 CR3: a024a000 CR4: 06e0
[   75.257875] Stack:
[   75.257877]  9dfb48493d38 0010 7ffdccd9da50 
9dfbed7436c8
[   75.257880]  9dfb48493ce8 c11c11eb 9dfb48493d38 
0001
[   75.257883]   7ffdccd9da50 c11a377a 
9dfb57e7d000
[   75.257885] Call Trace:
[   75.257946]  [] __dl_copy_from_user+0x1b/0x40 [blackmagic]
[   75.257974]  [] 
_ZN18IoctlMessageKernel6unpackEv+0x4a/0x160 [blackmagic]
[   75.257997]  [] ? blackmagic_ioctl_private+0x35db/0x4080 
[blackmagic]
[   75.258001]  [] ? filemap_map_pages+0x202/0x410
[   75.258004]  [] ? do_filp_open+0xa5/0x100
[   75.258008]  [] ? trace_buffer_lock_reserve+0x1c/0x50
[   75.258011]  [] ? trace_event_buffer_lock_reserve+0x72/0xf0
[   75.258036]  [] ? blackmagic_ioctl+0x49/0x60 [blackmagic]
[   75.258039]  [] ? do_vfs_ioctl+0xa3/0x610
[   75.258042]  [] ? putname+0x54/0x60
[   75.258045]  [] ? do_sys_open+0x1bc/0x280
[   75.258047]  [] ? SyS_ioctl+0x79/0x90
[   75.258051]  [] ? entry_SYSCALL_64_fastpath+0x1e/0xa8
[   75.258052] Code: 48 0f 44 d1 48 c7 c6 78 4d 2a 9e 48 c7 c1 5c a5 29 9e 48 
0f 44 f1 4d 89 e1 49 89 c0 48 89 d9 48 c7 c7 f8 19 2a 9e e8 bd 03 f7 ff <0f> 0b 
e8 12 d6 fb ff 85 c0 75 78 48 89 df e8 96 2c e4 ff 84 c0 
[   75.258079] RIP  [] __check_object_size+0x77/0x1dc
[   75.258082]  RSP 
[   75.258085] ---[ end trace 476b12ac04efcae0 ]---

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Title:
  kernel BUG at linux-4.8.0/mm/usercopy.c:75!

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[Bug 1628686] Re: kernel BUG at linux-4.8.0/mm/usercopy.c:75!

2016-10-19 Thread David Lee
Getting the same error with the Blackmagic Intensity module.

[   73.553893] [ cut here ]
[   73.553896] kernel BUG at /build/linux-NNryke/linux-4.8.0/mm/usercopy.c:75!
[   73.553899] invalid opcode:  [#3] SMP
[   73.553901] Modules linked in: xfrm_user xfrm4_tunnel tunnel4 ipcomp 
xfrm_ipcomp esp4 ah4 af_key xfrm_algo snd_hrtimer binfmt_misc nls_iso8859_1 
snd_hda_codec_via snd_hda_codec_generic ir_lirc_codec lirc_dev rc_rc6_mce 
mceusb kvm_amd kvm irqbypass nvidia_uvm(POE) snd_hda_codec_hdmi input_leds 
serio_raw blackmagic(POE) k8temp snd_usb_audio snd_usbmidi_lib gspca_sonixj 
gspca_main v4l2_common videodev media snd_hda_intel snd_ctxfi snd_hda_codec 
rc_imon_pad imon rc_core snd_hda_core snd_hwdep snd_pcm snd_seq_midi 
snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer snd shpchp 
soundcore asus_atk0110 wmi i2c_nforce2 mac_hid nfsd auth_rpcgss nfs_acl lockd 
grace sunrpc parport_pc ppdev lp parport ip_tables x_tables autofs4 dm_mirror 
dm_region_hash dm_log btrfs raid10 raid1 raid0 dm_raid raid456
[   73.553946]  async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
raid6_pq libcrc32c pata_acpi nvidia(POE) psmouse firewire_ohci drm forcedeth 
firewire_core crc_itu_t ahci libahci pata_amd video floppy fjes
[   73.553961] CPU: 0 PID: 2886 Comm: BlackmagicFirmw Tainted: P  DOE   
4.8.0-22-generic #24-Ubuntu
[   73.553963] Hardware name: System manufacturer System Product Name/M4N78 
PRO, BIOS 130304/13/2011
[   73.553965] task: 939669f39a00 task.stack: 9395e0e24000
[   73.553967] RIP: 0010:[]  [] 
__check_object_size+0x77/0x1dc
[   73.553974] RSP: 0018:9395e0e27ca0  EFLAGS: 00010286
[   73.553976] RAX: 0063 RBX: 9395e0e27d38 RCX: 
[   73.553978] RDX:  RSI: 939677c0dc68 RDI: 939677c0dc68
[   73.553980] RBP: 9395e0e27cc0 R08: 00087388 R09: 0005
[   73.553982] R10: 9395e0d6d738 R11: 046c R12: 0010
[   73.553984] R13:  R14: 9395e0e27d48 R15: 7ffc763f0eb0
[   73.553986] FS:  7efe82091780() GS:939677c0() 
knlGS:
[   73.553988] CS:  0010 DS:  ES:  CR0: 80050033
[   73.553990] CR2: 7efe80e75150 CR3: a0f16000 CR4: 06f0
[   73.553992] Stack:
[   73.553994]  9395e0e27d38 0010 7ffc763f0eb0 
93966715e108
[   73.553998]  9395e0e27ce8 c10841eb 9395e0e27d38 
0001
[   73.554001]   7ffc763f0eb0 c106677a 
9395d75d7000
[   73.554004] Call Trace:
[   73.554067]  [] __dl_copy_from_user+0x1b/0x40 [blackmagic]
[   73.554101]  [] 
_ZN18IoctlMessageKernel6unpackEv+0x4a/0x160 [blackmagic]
[   73.554130]  [] ? blackmagic_ioctl_private+0x35db/0x4080 
[blackmagic]
[   73.554133]  [] ? do_filp_open+0xa5/0x100
[   73.554164]  [] ? blackmagic_ioctl+0x49/0x60 [blackmagic]
[   73.554167]  [] ? do_vfs_ioctl+0xa3/0x610
[   73.554171]  [] ? putname+0x54/0x60
[   73.554174]  [] ? do_sys_open+0x1bc/0x280
[   73.554177]  [] ? SyS_ioctl+0x79/0x90
[   73.554182]  [] ? entry_SYSCALL_64_fastpath+0x1e/0xa8
[   73.554184] Code: 48 0f 44 d1 48 c7 c6 68 4d 8a ae 48 c7 c1 4c a5 89 ae 48 
0f 44 f1 4d 89 e1 49 89 c0 48 89 d9 48 c7 c7 e8 19 8a ae e8 bd 03 f7 ff <0f> 0b 
e8 12 d6 fb ff 85 c0 75 78 48 89 df e8 96 2c e4 ff 84 c0 
[   73.554216] RIP  [] __check_object_size+0x77/0x1dc
[   73.554219]  RSP 
[   73.554222] ---[ end trace c80a6ccc31c55190 ]---
[   79.352997] retire_capture_urb: 5 callbacks suppressed

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  kernel BUG at linux-4.8.0/mm/usercopy.c:75!

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[Bug 1628686] Re: kernel BUG at linux-4.8.0/mm/usercopy.c:75!

2016-10-03 Thread Joseph Salisbury
The Yakkety kernel in -proposed now has
CONFIG_HARDENED_USERCOPY_PAGESPAN disabled.

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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

** Tags added: kernel-da-key yakkety

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[Bug 1628686] Re: kernel BUG at linux-4.8.0/mm/usercopy.c:75!

2016-09-28 Thread Vinson Lee
$ apport-collect 1628686
The authorization page:
[...]
should be opening in your browser. Use your browser to authorize
this program to access Launchpad on your behalf.
Waiting to hear from Launchpad about your decision...
ERROR: connecting to Launchpad failed: local variable 'browser_obj' referenced 
before assignment

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  kernel BUG at linux-4.8.0/mm/usercopy.c:75!

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