[Bug 62239] New: radeon drm oops with benchmark=1 on Radeon 7950

[Bug 62239] New: radeon drm oops with benchmark=1 on Radeon 7950

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=62239

          Priority: medium
            Bug ID: 62239
          Assignee: dri-devel@lists.freedesktop.org
           Summary: radeon drm oops with benchmark=1 on Radeon 7950
          Severity: minor
    Classification: Unclassified
                OS: Linux (All)
          Reporter: frraaaanz+bugs.fdo@gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

(This is possibly a dup of 25747)

Bug: when i append "radeon.benchmark=1" the kernel oopses

System is Arch linux, kernel version 3.8.2-1-ARCH, hardware is Radeon HD 7950


Log:

Mar 12 15:51:01 yennork kernel: [    1.992473] [drm] initializing kernel
modesetting (TAHITI 0x1002:0x679A 0x1458:0x254C).


Mar 12 15:51:01 yennork kernel: [    2.694236] [drm] radeon: dma 1024 bo moves
of 1024 kB from 2 to 4 in 253 ms, throughput: 33152 Mb/s or 4144 MB/s
Mar 12 15:51:01 yennork kernel: [    2.694260] BUG: unable to handle kernel
NULL pointer dereference at           (null)
Mar 12 15:51:01 yennork kernel: [    2.694375] IP: [<          (null)>]        
  (null)
Mar 12 15:51:01 yennork kernel: [    2.694450] PGD 41bf9a067 PUD 41bf9b067 PMD
0 
Mar 12 15:51:01 yennork kernel: [    2.694586] Oops: 0010 [#1] PREEMPT SMP 
Mar 12 15:51:01 yennork kernel: [    2.694721] Modules linked in: hid_generic
usbhid hid mxm_wmi evdev radeon(+) snd_hda_codec_realtek fam15h_power
snd_hda_intel(+) ttm snd_hda_codec drm_kms_helper snd_hwdep drm snd_pcm
snd_page_alloc r8169 snd_timer snd i2c_algo_bit soundcore i2c_core mii nfs
lockd sunrpc fscache wmi button microcode kvm_amd kvm fuse acpi_cpufreq mperf
processor ext4 crc16 jbd2 mbcache dm_crypt dm_mod sr_mod cdrom sd_mod
crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 xts lrw gf128mul
ablk_helper cryptd ahci libahci ehci_pci ohci_hcd xhci_hcd ehci_hcd libata
usbcore scsi_mod usb_common pci_stub
Mar 12 15:51:01 yennork kernel: [    2.696915] CPU 4 
Mar 12 15:51:01 yennork kernel: [    2.696953] Pid: 244, comm: systemd-udevd
Not tainted 3.8.2-1-ARCH #1 Gigabyte Technology Co., Ltd.
GA-990XA-UD3/GA-990XA-UD3
Mar 12 15:51:01 yennork kernel: [    2.697041] RIP: 0010:[<0000000000000000>] 
[<          (null)>]           (null)
Mar 12 15:51:01 yennork kernel: [    2.697121] RSP: 0018:ffff88041bff3940 
EFLAGS: 00010246
Mar 12 15:51:01 yennork kernel: [    2.697164] RAX: ffffffffa04d3380 RBX:
0000000000000400 RCX: 0000000000000100
Mar 12 15:51:01 yennork kernel: [    2.697210] RDX: 000000000114b000 RSI:
00000000c0431000 RDI: ffff88041c1ac000
Mar 12 15:51:01 yennork kernel: [    2.697255] RBP: ffff88041bff39a8 R08:
ffff88041bff3970 R09: 000000000000034d
Mar 12 15:51:01 yennork kernel: [    2.697300] R10: 0000000000000000 R11:
000000000000034c R12: 0000000000000001
Mar 12 15:51:01 yennork kernel: [    2.697345] R13: ffff88041c1ac000 R14:
0000000000000100 R15: 00000000c0431000
Mar 12 15:51:01 yennork kernel: [    2.697391] FS:  00007fec84a54780(0000)
GS:ffff88042ed00000(0000) knlGS:0000000000000000
Mar 12 15:51:01 yennork kernel: [    2.697440] CS:  0010 DS: 0000 ES: 0000 CR0:
000000008005003b
Mar 12 15:51:01 yennork kernel: [    2.697484] CR2: 0000000000000000 CR3:
000000041bf99000 CR4: 00000000000407e0
Mar 12 15:51:01 yennork kernel: [    2.697529] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Mar 12 15:51:01 yennork kernel: [    2.697574] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400
Mar 12 15:51:01 yennork kernel: [    2.697621] Process systemd-udevd (pid: 244,
threadinfo ffff88041bff2000, task ffff88041a1110c0)
Mar 12 15:51:01 yennork kernel: [    2.697670] Stack:
Mar 12 15:51:01 yennork kernel: [    2.697707]  ffffffffa0454a26
ffff88041bff39a8 ffffffff814ca2cb 00000000fffea35a
Mar 12 15:51:01 yennork kernel: [    2.697881]  000000000114b000
ffff88041bff39d0 0000000000000000 ffff88041bff39f0
Mar 12 15:51:01 yennork kernel: [    2.698054]  ffff88041bff39f0
0000000000000002 ffff88041c1ac000 0000000000100000
Mar 12 15:51:01 yennork kernel: [    2.698227] Call Trace:
Mar 12 15:51:01 yennork kernel: [    2.698319]  [<ffffffffa0454a26>] ?
radeon_benchmark_do_move.constprop.1+0xf6/0x120 [radeon]
Mar 12 15:51:01 yennork kernel: [    2.698375]  [<ffffffff814ca2cb>] ?
printk+0x4d/0x4f
Mar 12 15:51:01 yennork kernel: [    2.698464]  [<ffffffffa0454c9e>]
radeon_benchmark_move+0x24e/0x2b0 [radeon]
Mar 12 15:51:01 yennork kernel: [    2.698555]  [<ffffffffa0454e14>]
radeon_benchmark+0x114/0x2a0 [radeon]
Mar 12 15:51:01 yennork kernel: [    2.698637]  [<ffffffffa0424bc1>]
radeon_device_init+0x601/0x670 [radeon]
Mar 12 15:51:01 yennork kernel: [    2.698720]  [<ffffffffa042665d>]
radeon_driver_load_kms+0x9d/0x1a0 [radeon]
Mar 12 15:51:01 yennork kernel: [    2.698776]  [<ffffffffa039b976>]
drm_get_pci_dev+0x186/0x2c0 [drm]
Mar 12 15:51:01 yennork kernel: [    2.698855]  [<ffffffffa040c1d4>]
radeon_pci_probe+0xb4/0xf0 [radeon]
Mar 12 15:51:01 yennork kernel: [    2.698904]  [<ffffffff8129f7eb>]
local_pci_probe+0x4b/0x80
Mar 12 15:51:01 yennork kernel: [    2.698950]  [<ffffffff812a00b1>]
pci_device_probe+0x111/0x120
Mar 12 15:51:01 yennork kernel: [    2.698999]  [<ffffffff8135a41b>]
driver_probe_device+0x8b/0x3a0
Mar 12 15:51:01 yennork kernel: [    2.699046]  [<ffffffff8135a7db>]
__driver_attach+0xab/0xb0
Mar 12 15:51:01 yennork kernel: [    2.699092]  [<ffffffff8135a730>] ?
driver_probe_device+0x3a0/0x3a0
Mar 12 15:51:01 yennork kernel: [    2.699138]  [<ffffffff8135844d>]
bus_for_each_dev+0x5d/0xa0
Mar 12 15:51:01 yennork kernel: [    2.699185]  [<ffffffff81359e8e>]
driver_attach+0x1e/0x20
Mar 12 15:51:01 yennork kernel: [    2.699230]  [<ffffffff813599b0>]
bus_add_driver+0x1a0/0x290

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[Bug 62239] radeon drm oops with benchmark=1 on Radeon 7950

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https://bugs.freedesktop.org/show_bug.cgi?id=62239

--- Comment #1 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 76410
  --> https://bugs.freedesktop.org/attachment.cgi?id=76410&action=edit
possible fix

This patch should fix the issue.

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[Bug 62239] radeon drm oops with benchmark=1 on Radeon 7950

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https://bugs.freedesktop.org/show_bug.cgi?id=62239

--- Comment #2 from Michal Babej <frraaaanz+bugs.fdo@gmail.com> ---
Built 3.8.2 with the patch, verified its working. Thanks!

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[Bug 62239] radeon drm oops with benchmark=1 on Radeon 7950

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https://bugs.freedesktop.org/show_bug.cgi?id=62239

Florian Mickler <florian@mickler.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |florian@mickler.org

--- Comment #3 from Florian Mickler <florian@mickler.org> ---
A patch referencing this bug report has been merged in Linux v3.9-rc4:

commit fa8d387dc3f62062a6b4afbbb2a3438094fd8584
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Tue Mar 12 12:53:13 2013 -0400

    drm/radeon/benchmark: make sure bo blit copy exists before using it

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[Bug 62239] radeon drm oops with benchmark=1 on Radeon 7950

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https://bugs.freedesktop.org/show_bug.cgi?id=62239

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Michel Dänzer <michel@daenzer.net> ---
Resolving per comment #3.

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