* Re: [Bug 206697] #PF: supervisor read access in kernel mode, #PF: error_code(0x0000) - not-present page while building a large project
[not found] ` <bug-206697-27-AARxZEfI7A@https.bugzilla.kernel.org/>
@ 2020-03-02 23:03 ` Andrew Morton
2020-04-17 21:58 ` Andrew Morton
0 siblings, 1 reply; 2+ messages in thread
From: Andrew Morton @ 2020-03-02 23:03 UTC (permalink / raw)
To: erhard_f
Cc: bugzilla-daemon, linux-mm, Christian Koenig, Huang Rui,
David Airlie, Daniel Vetter, dri-devel
(switched to email. Please respond via emailed reply-to-all, not via the
bugzilla web interface).
On Mon, 02 Mar 2020 21:55:10 +0000 bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=206697
>
> --- Comment #2 from Erhard F. (erhard_f@mailbox.org) ---
> Created attachment 287765
> --> https://bugzilla.kernel.org/attachment.cgi?id=287765&action=edit
> dmesg (kernel 5.6-rc4, Shuttle XPC FS51, Pentium 4)
>
> Same on kernel 5.6-rc4:
Thanks. This looks like a regression in the DRM code. I've added
suitable Ccs.
> [...]
> [ 908.356444] BUG: kernel NULL pointer dereference, address: 00000000
> [ 908.356670] #PF: supervisor read access in kernel mode
> [ 908.356823] #PF: error_code(0x0000) - not-present page
> [ 908.356974] *pde = 00000000
> [ 908.357064] Oops: 0000 [#1] SMP
> [ 908.357163] CPU: 0 PID: 53 Comm: kswapd0 Not tainted 5.6.0-rc4-Pentium4 #1
> [ 908.357367] Hardware name: /FS51, BIOS 6.00 PG 12/02/2003
> [ 908.357535] EIP: __cpa_process_fault+0x205/0x226
> [ 908.357674] Code: 2d 00 00 00 40 39 d0 76 1f 81 fa ff ff ff bf 76 17 c7 47
> 10 01 00 00 00 81 c3 00 00 00 40 c1 eb 0c 89 5f 18 31 f6 eb 19 8b 07 <ff> 30 53
> 68 56 ba 89 c9 e8 f8 68 00 00 0f 0b 83 c4 0c be f2 ff ff
> [ 908.358228] EAX: 00000000 EBX: 00000000 ECX: 00000001 EDX: 00000000
> [ 908.358411] ESI: 00000001 EDI: f5e6fd4c EBP: f5e6fcc4 ESP: f5e6fca0
> [ 908.358598] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010213
> [ 908.358798] CR0: 80050033 CR2: 00000000 CR3: 00333000 CR4: 000006d0
> [ 908.358981] Call Trace:
> [ 908.359062] ? _raw_spin_lock+0x22/0x2a
> [ 908.359176] ? lookup_address+0x1d/0x20
> [ 908.359289] __change_page_attr_set_clr+0x85/0x551
> [ 908.359436] ? __mutex_unlock_slowpath+0x20/0x1b6
> [ 908.368244] ? mutex_unlock+0xb/0xd
> [ 908.377037] ? _vm_unmap_aliases.part.0+0x11f/0x127
> [ 908.385944] change_page_attr_set_clr+0xdc/0x1af
> [ 908.394889] set_pages_array_wb+0x20/0x7b
> [ 908.403630] ttm_pages_put+0x22/0x71 [ttm]
> [ 908.412159] ttm_page_pool_free+0xf6/0x111 [ttm]
> [ 908.420492] ttm_pool_shrink_scan+0x9c/0xd1 [ttm]
> [ 908.428885] shrink_slab.constprop.0+0x248/0x38f
> [ 908.437241] shrink_node+0x533/0x6f2
> [ 908.445492] kswapd+0x4b9/0x62d
> [ 908.453714] ? kswapd+0x4b9/0x62d
> [ 908.461937] kthread+0xd1/0xd3
> [ 908.470055] ? try_to_free_pages+0x3d4/0x3d4
> [ 908.478143] ? kthread_delayed_work_timer_fn+0x6a/0x6a
> [ 908.486242] ret_from_fork+0x2e/0x38
> [ 908.494256] Modules linked in: auth_rpcgss nfsv4 dns_resolver nfs lockd
> grace sunrpc ctr aes_generic libaes ccm hid_generic usbhid hid rt2500pci
> eeprom_93cx6 rt2x00pci rt2x00mmio rt2x00lib led_class mac80211 radeon evdev
> hwmon i2c_algo_bit drm_kms_helper cfbfillrect syscopyarea cfg80211 cfbimgblt
> sysfillrect sysimgblt fb_sys_fops cfbcopyarea firewire_ohci firewire_core fb
> rfkill font crc_itu_t 8139too libarc4 mii fbdev sr_mod cdrom ttm thermal fan
> ohci_pci drm 8250 snd_intel8x0 8250_base serial_core snd_ac97_codec ac97_bus
> ehci_pci ohci_hcd snd_pcm drm_panel_orientation_quirks ehci_hcd button
> backlight snd_timer usbcore sis_agp agpgart snd i2c_sis96x usb_common processor
> soundcore zstd zram zsmalloc
> [ 908.522107] CR2: 0000000000000000
> [ 908.531646] ---[ end trace f8cc5b63e4c76d19 ]---
> [ 908.541190] EIP: __cpa_process_fault+0x205/0x226
> [ 908.550708] Code: 2d 00 00 00 40 39 d0 76 1f 81 fa ff ff ff bf 76 17 c7 47
> 10 01 00 00 00 81 c3 00 00 00 40 c1 eb 0c 89 5f 18 31 f6 eb 19 8b 07 <ff> 30 53
> 68 56 ba 89 c9 e8 f8 68 00 00 0f 0b 83 c4 0c be f2 ff ff
> [ 908.560958] EAX: 00000000 EBX: 00000000 ECX: 00000001 EDX: 00000000
> [ 908.571156] ESI: 00000001 EDI: f5e6fd4c EBP: f5e6fcc4 ESP: f5e6fca0
> [ 908.581412] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010213
> [ 908.591710] CR0: 80050033 CR2: 00000000 CR3: 00333000 CR4: 000006d0
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Bug 206697] #PF: supervisor read access in kernel mode, #PF: error_code(0x0000) - not-present page while building a large project
2020-03-02 23:03 ` [Bug 206697] #PF: supervisor read access in kernel mode, #PF: error_code(0x0000) - not-present page while building a large project Andrew Morton
@ 2020-04-17 21:58 ` Andrew Morton
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Morton @ 2020-04-17 21:58 UTC (permalink / raw)
To: erhard_f, bugzilla-daemon, linux-mm, Christian Koenig, Huang Rui,
David Airlie, Daniel Vetter, dri-devel
On Mon, 2 Mar 2020 15:03:29 -0800 Andrew Morton <akpm@linux-foundation.org> wrote:
>
> (switched to email. Please respond via emailed reply-to-all, not via the
> bugzilla web interface).
>
> On Mon, 02 Mar 2020 21:55:10 +0000 bugzilla-daemon@bugzilla.kernel.org wrote:
>
> > https://bugzilla.kernel.org/show_bug.cgi?id=206697
> >
> > --- Comment #2 from Erhard F. (erhard_f@mailbox.org) ---
> > Created attachment 287765
> > --> https://bugzilla.kernel.org/attachment.cgi?id=287765&action=edit
> > dmesg (kernel 5.6-rc4, Shuttle XPC FS51, Pentium 4)
> >
> > Same on kernel 5.6-rc4:
>
> Thanks. This looks like a regression in the DRM code. I've added
> suitable Ccs.
Erhard, please let's handle this issue via email, not via the bugzilla
interface.
This does appear to be a DRM issue, and it has been reproduced in
5.7-rc1.
Latest update below:
From: bugzilla-daemon@bugzilla.kernel.org
To: akpm@linux-foundation.org
Subject: [Bug 206697] #PF: supervisor read access in kernel mode, #PF: error_code(0x0000) - not-present page while building a large project
Date: Fri, 17 Apr 2020 07:45:23 +0000
https://bugzilla.kernel.org/show_bug.cgi?id=206697
--- Comment #5 from Erhard F. (erhard_f@mailbox.org) ---
Looks mostly the same on kernel 5.7-rc1. The line after kthread+0xd1/0xd3 is
different. It was "? try_to_free_pages+0x3d4/0x3d4" on 5.5.6 and 5.6-rc4, but
is "? shrink_node+0x6f2/0x6f2" on 5.7-rc1 now.
[...]
Apr 17 00:28:40 BUG: kernel NULL pointer dereference, address: 00000000
Apr 17 00:28:40 #PF: supervisor read access in kernel mode
Apr 17 00:28:40 #PF: error_code(0x0000) - not-present page
Apr 17 00:28:40 *pde = 00000000
Apr 17 00:28:40 Oops: 0000 [#1] SMP
Apr 17 00:28:40 CPU: 0 PID: 53 Comm: kswapd0 Not tainted 5.7.0-rc1-Pentium4 #1
Apr 17 00:28:40 Hardware name: /FS51, BIOS 6.00 PG 12/02/2003
Apr 17 00:28:40 EIP: __cpa_process_fault+0x205/0x226
Apr 17 00:28:40 Code: 2d 00 00 00 40 39 d0 76 1f 81 fa ff ff ff bf 76 17 c7 47
10 01 00 00 00 81 c3 00 00 00 40 c1 eb 0c 89 5f 18 31 f6 eb 19 8b 07 <ff> 30 53
68 d5 c7 cb d8 e8 cb 68 00 00 0f 0b>
Apr 17 00:28:40 EAX: 00000000 EBX: 00000000 ECX: 00000001 EDX: 00000000
Apr 17 00:28:40 ESI: 00000001 EDI: f5e5bd4c EBP: f5e5bcc4 ESP: f5e5bca0
Apr 17 00:28:40 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010213
Apr 17 00:28:40 CR0: 80050033 CR2: 00000000 CR3: 05ab3000 CR4: 000006d0
Apr 17 00:28:40 Call Trace:
Apr 17 00:28:40 ? _raw_spin_lock+0x22/0x2a
Apr 17 00:28:40 ? lookup_address+0x1d/0x20
Apr 17 00:28:40 __change_page_attr_set_clr+0x85/0x551
Apr 17 00:28:40 ? __mutex_unlock_slowpath+0x20/0x1b6
Apr 17 00:28:40 ? mutex_unlock+0xb/0xd
Apr 17 00:28:40 ? _vm_unmap_aliases.part.0+0x11f/0x127
Apr 17 00:28:40 change_page_attr_set_clr+0xdc/0x1af
Apr 17 00:28:40 set_pages_array_wb+0x20/0x7b
Apr 17 00:28:40 ttm_pages_put+0x22/0x71 [ttm]
Apr 17 00:28:40 ttm_page_pool_free+0xa1/0x111 [ttm]
Apr 17 00:28:40 ttm_pool_shrink_scan+0x9c/0xd1 [ttm]
Apr 17 00:28:40 shrink_slab.constprop.0+0x248/0x38f
Apr 17 00:28:40 shrink_node+0x533/0x6f2
Apr 17 00:28:40 kswapd+0x4b6/0x628
Apr 17 00:28:40 ? kswapd+0x4b6/0x628
Apr 17 00:28:40 kthread+0xd1/0xd3
Apr 17 00:28:40 ? shrink_node+0x6f2/0x6f2
Apr 17 00:28:40 ? kthread_delayed_work_timer_fn+0x6a/0x6a
Apr 17 00:28:40 ret_from_fork+0x2e/0x38
Apr 17 00:28:40 Modules linked in: fuse auth_rpcgss nfsv4 dns_resolver nfs
lockd grace sunrpc rt2500pci eeprom_93cx6 rt2x00pci rt2x00mmio rt2x00lib
led_class mac80211 radeon hwmon i2c_algo_bit d>
Apr 17 00:28:40 CR2: 0000000000000000
Apr 17 00:28:40 ---[ end trace 49fbdfbb6e459a06 ]---
Apr 17 00:28:40 EIP: __cpa_process_fault+0x205/0x226
Apr 17 00:28:40 Code: 2d 00 00 00 40 39 d0 76 1f 81 fa ff ff ff bf 76 17 c7 47
10 01 00 00 00 81 c3 00 00 00 40 c1 eb 0c 89 5f 18 31 f6 eb 19 8b 07 <ff> 30 53
68 d5 c7 cb d8 e8 cb 68 00 00 0f 0b>
Apr 17 00:28:40 EAX: 00000000 EBX: 00000000 ECX: 00000001 EDX: 00000000
Apr 17 00:28:40 ESI: 00000001 EDI: f5e5bd4c EBP: f5e5bcc4 ESP: f5e5bca0
Apr 17 00:28:40 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010213
Apr 17 00:28:40 CR0: 80050033 CR2: 00000000 CR3: 05ab3000 CR4: 000006d0
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[not found] ` <bug-206697-27-AARxZEfI7A@https.bugzilla.kernel.org/>
2020-03-02 23:03 ` [Bug 206697] #PF: supervisor read access in kernel mode, #PF: error_code(0x0000) - not-present page while building a large project Andrew Morton
2020-04-17 21:58 ` Andrew Morton
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