[Bug 94891] New: BUG: unable to handle kernel NULL pointer dereference

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94891

            Bug ID: 94891
           Summary: BUG: unable to handle kernel NULL pointer dereference
           Product: xorg
           Version: 7.7 (2012.06)
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: dynup at ymail.com
        QA Contact: xorg-team at lists.x.org

Apr 11 11:33:39 lmde kernel: [   58.353082] BUG: unable to handle kernel NULL
pointer dereference at 0000000000000008
Apr 11 11:33:39 lmde kernel: [   58.353140] IP: [<ffffffffa033ac3d>]
radeon_fence_ref+0xd/0x50 [radeon]
Apr 11 11:33:39 lmde kernel: [   58.353205] PGD 0 
Apr 11 11:33:39 lmde kernel: [   58.353219] Oops: 0002 [#1] SMP 
Apr 11 11:33:39 lmde kernel: [   58.353242] Modules linked in: cfg80211 bnep
bluetooth 6lowpan_iphc rfkill cpufreq_stats cpufreq_conservative
cpufreq_powersave cpufreq_userspace binfmt_misc fuse ecryptfs lp dm_crypt
uinput joydev ppdev kvm_amd kvm snd_hda_codec_realtek snd_hda_codec_hdmi
snd_hda_codec_generic pcspkr snd_hda_intel edac_mce_amd k10temp
snd_hda_controller edac_core serio_raw snd_hda_codec snd_hwdep snd_pcm
snd_timer snd acpi_cpufreq parport_pc sp5100_tco parport soundcore evdev
processor i2c_piix4 shpchp thermal_sys ext4 crc16 mbcache jbd2 dm_mirror
dm_region_hash dm_log dm_mod hid_generic usbhid hid sr_mod cdrom sg sd_mod
crc_t10dif crct10dif_generic crct10dif_common ohci_pci r8169 mii ata_generic
pata_jmicron ahci libahci radeon i2c_algo_bit ttm drm_kms_helper firewire_ohci
drm firewire_core crc_itu_t i2c_core ohci_hcd ehci_pci libata xhci_hcd ehci_hcd
scsi_mod usbcore usb_common wmi button
Apr 11 11:33:39 lmde kernel: [   58.353811] CPU: 3 PID: 2490 Comm: Xorg Not
tainted 3.16.0-4-amd64 #1 Debian 3.16.7-ckt25-1
Apr 11 11:33:39 lmde kernel: [   58.353860] Hardware name: Gigabyte Technology
Co., Ltd. GA-870A-UD3/GA-870A-UD3, BIOS FEe 10/17/2011
Apr 11 11:33:39 lmde kernel: [   58.353914] task: ffff8802229a4960 ti:
ffff880225d24000 task.ti: ffff880225d24000
Apr 11 11:33:39 lmde kernel: [   58.353957] RIP: 0010:[<ffffffffa033ac3d>] 
[<ffffffffa033ac3d>] radeon_fence_ref+0xd/0x50 [radeon]
Apr 11 11:33:39 lmde kernel: [   58.354027] RSP: 0018:ffff880225d27b18  EFLAGS:
00010292
Apr 11 11:33:39 lmde kernel: [   58.354059] RAX: 0000000000000000 RBX:
ffff8800cf86d5f8 RCX: ffff8800cf86cd08
Apr 11 11:33:39 lmde kernel: [   58.354100] RDX: 0000000000000001 RSI:
0000000000000000 RDI: 0000000000000000
Apr 11 11:33:39 lmde kernel: [   58.354141] RBP: ffff8800cf86d550 R08:
ffff8800cf86c000 R09: 0000000000000000
Apr 11 11:33:39 lmde kernel: [   58.354183] R10: 0000000000000002 R11:
ffff880225d27e08 R12: 0000000000000020
Apr 11 11:33:39 lmde kernel: [   58.354224] R13: ffff880225d27be0 R14:
ffff880225d27bb0 R15: ffff8800cf86d5f8
Apr 11 11:33:39 lmde kernel: [   58.354266] FS:  00007f014cd7c980(0000)
GS:ffff88022fcc0000(0000) knlGS:00000000f5fadb40
Apr 11 11:33:39 lmde kernel: [   58.354313] CS:  0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Apr 11 11:33:39 lmde kernel: [   58.354346] CR2: 0000000000000008 CR3:
00000002251d4000 CR4: 00000000000007e0
Apr 11 11:33:39 lmde kernel: [   58.354388] Stack:
Apr 11 11:33:39 lmde kernel: [   58.354400]  ffffffffa039b0bc 0020000000053a60
0000566000000100 ffff880225d27cd0
Apr 11 11:33:39 lmde kernel: [   58.354448]  ffff8800cf86c000 ffff8802229a4960
ffff8802229a4960 ffff8800c9de5e10
Apr 11 11:33:39 lmde kernel: [   58.354496]  0000000000000000 0000000000000000
0000000000000000 0000000000000000
Apr 11 11:33:39 lmde kernel: [   58.354544] Call Trace:
Apr 11 11:33:39 lmde kernel: [   58.354578]  [<ffffffffa039b0bc>] ?
radeon_sa_bo_new+0x25c/0x460 [radeon]
Apr 11 11:33:39 lmde kernel: [   58.354633]  [<ffffffffa034ff3e>] ?
radeon_ib_get+0x2e/0xd0 [radeon]
Apr 11 11:33:39 lmde kernel: [   58.354684]  [<ffffffffa035247c>] ?
radeon_cs_ioctl+0x13c/0x730 [radeon]
Apr 11 11:33:39 lmde kernel: [   58.354732]  [<ffffffffa019e8b7>] ?
drm_ioctl+0x1c7/0x5b0 [drm]
Apr 11 11:33:39 lmde kernel: [   58.354771]  [<ffffffff8101d6c9>] ?
init_fpu+0x49/0xa0
Apr 11 11:33:39 lmde kernel: [   58.354803]  [<ffffffff812b2f68>] ?
timerqueue_add+0x58/0xa0
Apr 11 11:33:39 lmde kernel: [   58.354847]  [<ffffffffa031f046>] ?
radeon_drm_ioctl+0x46/0x80 [radeon]
Apr 11 11:33:39 lmde kernel: [   58.354888]  [<ffffffff811bacdf>] ?
do_vfs_ioctl+0x2cf/0x4b0
Apr 11 11:33:39 lmde kernel: [   58.354923]  [<ffffffff81407705>] ?
__sys_recvmsg+0x65/0x80
Apr 11 11:33:39 lmde kernel: [   58.354957]  [<ffffffff811baf41>] ?
SyS_ioctl+0x81/0xa0
Apr 11 11:33:39 lmde kernel: [   58.354990]  [<ffffffff81514a0d>] ? system_cal

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