Hi,
On Sun, Oct 3, 2021 at 7:02 AM kernel test robot <oliver.sang@xxxxxxxxx> wrote:
>
>
>
> Greeting,
>
> FYI, we noticed the following commit (built with gcc-9):
>
> commit: bac9c29482248b00cccfdfef1f34175714d33370 ("drm/edid: Break out reading block 0 of the EDID")
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
>
>
> in testcase: fio-basic
> version: fio-x86_64-3.15-1_20210828
> with following parameters:
>
> runtime: 300s
> disk: 1HDD
> fs: btrfs
> nr_task: 100%
> test_size: 128G
> rw: write
> bs: 4k
> ioengine: filecreate
> cpufreq_governor: performance
> ucode: 0x42e
>
> test-description: Fio is a tool that will spawn a number of threads or processes doing a particular type of I/O action as specified by the user.
> test-url: https://github.com/axboe/fio
>
>
> on test machine: 48 threads 2 sockets Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz with 112G memory
>
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
>
>
>
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
>
>
> 39mKernel Config[ 14.138938][ T304] ata6: SATA max UDMA/133 abar m2048@0xd0b00000 port 0xd0b00380 irq 61
> [[ 14.198770][ T635] ipmi_si dmi-ipmi-si.0: IPMI kcs interface initialized
> [ 14.332374][ T5] #PF: supervisor read access in kernel mode
> [ 14.338904][ T5] #PF: error_code(0x0000) - not-present page
> [ 14.345414][ T5] PGD 0 P4D 0
> [ 14.349018][ T5] Oops: 0000 [#1] SMP PTI
> r to synchronize[ 14.353687][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.15.0-rc1-00114-gbac9c2948224 #1
> [ 14.365136][ T5] Hardware name: Intel Corporation S2600WP/S2600WP, BIOS SE5C600.86B.02.02.0002.122320131210 12/23/2013
> boot up for ifu[ 14.377368][ T5] Workqueue: events work_for_cpu_fn
> [ 14.384541][ T5] RIP: 0010:connector_bad_edid+0x12/0x180 [drm]
> [ 14.391370][ T5] Code: 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 0f 1f 44 00 00 41 54 55 89 d5 53 48 89 f3 48 83 ec 20 <0f> b6 56 7e 65 48 8b 04 25 28 00 00 00 48 89 44 24 18 31 c0 c1 e2
> [ 14.414456][ T5] RSP: 0018:ffffc90000093b58 EFLAGS: 00010282
> [ 14.421077][ T5] RAX: ffff888172c5df01 RBX: ffffffffffffffea RCX: 00000000000003f9
> [ 14.429823][ T5] RDX: 0000000000000001 RSI: ffffffffffffffea RDI: ffff8881e02b6668
> [ 14.438567][ T5] RBP: 0000000000000001 R08: 00000a77fb35e0ea R09: 0000000000000000
> [ 14.447321][ T5] R10: 00000000000000e9 R11: 00000000000191e4 R12: ffffffffc03b5d80
> [ 14.456060][ T5] R13: ffff8881e02bf800 R14: 0000000000000000 R15: ffffffffffffffea
> Startin[ 14.464807][ T5] FS: 0000000000000000(0000) GS:ffff888f03600000(0000) knlGS:0000000000000000
> [ 14.476158][ T5] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> Journal to Pers[ 14.476160][ T5] CR2: 0000000000000068 CR3: 00000002adcbe002 CR4: 00000000001706f0
> [ 14.476167][ T5] ? drm_hdmi_avi_infoframe_bars+0x40/0x40 [drm]
> 0m...
> [ 14.476180][ T5] ? drm_hdmi_avi_infoframe_bars+0x40/0x40 [drm]
> [ 14.476190][ T5] drm_do_get_edid+0xf4/0x300 [drm]
> [ 14.491802][ T738] ata6: SATA link down (SStatus 0 SControl 300)
I will assume that this is the same problem reported by Geert [1].
I've posted a fix [2].
[1] https://lore.kernel.org/r/CAMuHMdWy+aASNevg8nc9LTvR9QNrGYZQnB3sYYLDRfEU1w_idg@xxxxxxxxxxxxxx
[2] https://lore.kernel.org/r/20211004092100.1.Ic90a5ebd44c75db963112be167a03cc96f9fb249@changeid/
