Bug 87316

Summary: [radeonsi][bonaire][drm-next-3.19] unable to handle kernel NULL pointer dereference: radeon_fence_signaled
Product: DRI Reporter: Shawn Starr <shawn.starr>
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED WONTFIX QA Contact:
Severity: normal    
Priority: medium    
Version: XOrg git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
full kernel boot log none

Description Shawn Starr 2014-12-15 05:18:35 UTC 
hardware: Dell Precision M6800 (GPU: FirePro M6100)
kernel: drm-next-3.19 from agdf5's linux git repo
mesa: master from 20141213 (10.5-dev)

I was using DRI_PRIME prior, the kernel oops happened while the GPU was powered down awhile later, see full kernel log from boot to failure.

kernel oops dump:

[22485.963089] BUG: unable to handle kernel NULL pointer dereference at 0000000000000d48
[22485.967333] IP: [<ffffffffa015668e>] radeon_fence_signaled+0x3e/0x90 [radeon]
[22485.971403] PGD 0 
[22485.973433] Oops: 0000 [#1] SMP 
[22485.975511] Modules linked in: cpufreq_stats rfcomm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack tun bridge stp llc bnep snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic snd_hda_intel snd_hda_controller x86_pkg_temp_thermal coretemp snd_hda_codec kvm_intel kvm arc4 iwlmvm snd_hwdep mac80211 snd_seq i915 uvcvideo iwlwifi snd_seq_device videobuf2_vmalloc videobuf2_core videobuf2_memops v4l2_common crct10dif_pclmul videodev cfg80211 btusb media crc32_pclmul snd_pcm bluetooth vfat fat snd_timer joydev dell_wmi sparse_keymap iTCO_wdt iTCO_vendor_support dell_laptop snd dcdbas ppdev sdhci_pci mei_me crc32c_intel cdc_acm wmi serio_raw pcspkr ie31200_edac mei ghash_clmulni_intel lpc_ich
[22486.010804]  mfd_core rfkill soundcore edac_core i2c_hid i2c_i801 shpchp i2c_designware_platform video i2c_designware_core parport_pc parport dw_dmac dw_dmac_core dell_smo8800 radeon i2c_algo_bit drm_kms_helper ttm drm e1000e sdhci_acpi sdhci mmc_core ptp pps_core
[22486.022517] CPU: 7 PID: 717 Comm: systemd-logind Not tainted 3.18.0+ #1
[22486.026765] Hardware name: Dell Inc. Precision M6800/05NG6V, BIOS A11 11/20/2014
[22486.030890] task: ffff8800c588cb00 ti: ffff880804028000 task.ti: ffff880804028000
[22486.035282] RIP: 0010:[<ffffffffa015668e>]  [<ffffffffa015668e>] radeon_fence_signaled+0x3e/0x90 [radeon]
[22486.041831] RSP: 0018:ffff88080402b878  EFLAGS: 00010246
[22486.045102] RAX: 0000000000000000 RBX: ffff880803e46600 RCX: 000000010040000e
[22486.048791] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[22486.053330] RBP: ffff88080402b898 R08: 0000000063e8df01 R09: 000000010040000e
[22486.057116] R10: ffffffffa01cc22d R11: ffff880763e8df00 R12: 0000000000000000
[22486.061664] R13: 0000000000000d40 R14: 0000000000000000 R15: ffff88080402ba38
[22486.066733] FS:  00007f294be348c0(0000) GS:ffff88082ebc0000(0000) knlGS:0000000000000000
[22486.069989] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[22486.074192] CR2: 0000000000000d48 CR3: 0000000807fa9000 CR4: 00000000001407e0
[22486.077843] Stack:
[22486.080235]  ffff88080402b898 ffff880763e8d580 ffff88079424e880 ffff880802949a20
[22486.084016]  ffff88080402b8c8 ffffffffa01cc2b4 ffff88080402bb18 ffff880802949978
[22486.088606]  ffff88080402bb18 ffff8807a3887f40 ffff88080402b9e8 ffffffffa01cc8a8
[22486.093200] Call Trace:
[22486.094945]  [<ffffffffa01cc2b4>] radeon_sa_bo_try_free+0x64/0x80 [radeon]
[22486.099356]  [<ffffffffa01cc8a8>] radeon_sa_bo_new+0x118/0x490 [radeon]
[22486.102843]  [<ffffffffa01559ab>] ? radeon_fence_activity+0x10b/0x1c0 [radeon]
[22486.107423]  [<ffffffffa0227567>] radeon_ib_get+0x37/0xe0 [radeon]
[22486.110871]  [<ffffffffa02337f3>] radeon_vce_get_destroy_msg+0x43/0x240 [radeon]
[22486.115516]  [<ffffffffa0234833>] radeon_vce_ib_test+0x63/0x100 [radeon]
[22486.119946]  [<ffffffffa02279fa>] radeon_ib_ring_tests+0x5a/0xc0 [radeon]
[22486.123477]  [<ffffffffa013a91d>] radeon_resume_kms+0x9d/0x260 [radeon]
[22486.127830]  [<ffffffffa0138143>] radeon_pmops_runtime_resume+0x73/0xb0 [radeon]
[22486.131779]  [<ffffffff813cef9f>] pci_pm_runtime_resume+0x7f/0xc0
[22486.136004]  [<ffffffff8149d2f9>] vga_switcheroo_runtime_resume+0x39/0x40
[22486.139411]  [<ffffffff8128e200>] ? kernfs_fop_release+0x60/0x60
[22486.142766]  [<ffffffff814ae194>] __rpm_callback+0x34/0x90
[22486.146340]  [<ffffffff814ae216>] rpm_callback+0x26/0xa0
[22486.149156]  [<ffffffff814ae6f4>] rpm_resume+0x464/0x640
[22486.152313]  [<ffffffff8175a836>] ? mutex_lock+0x16/0x40
[22486.154513]  [<ffffffff814af76f>] __pm_runtime_resume+0x4f/0x80
[22486.157761]  [<ffffffffa01622e3>] radeon_dp_detect+0x43/0x290 [radeon]
[22486.161421]  [<ffffffffa00a2171>] status_show+0x41/0x90 [drm]
[22486.164584]  [<ffffffff814a0a00>] dev_attr_show+0x20/0x60
[22486.167656]  [<ffffffff8175a836>] ? mutex_lock+0x16/0x40
[22486.169910]  [<ffffffff8128eec6>] sysfs_kf_seq_show+0xb6/0x150
[22486.172287]  [<ffffffff8128d673>] kernfs_seq_show+0x23/0x30
[22486.175550]  [<ffffffff81237185>] seq_read+0xf5/0x3d0
[22486.178653]  [<ffffffff8128e0a5>] kernfs_fop_read+0xf5/0x160
[22486.181877]  [<ffffffff81211e88>] vfs_read+0x98/0x180
[22486.184017]  [<ffffffff81212a75>] SyS_read+0x55/0xd0
[22486.186276]  [<ffffffff8175cae9>] system_call_fastpath+0x12/0x17
[22486.189533] Code: 48 89 fb 48 83 ec 08 8b 47 68 4c 8b 67 60 48 8b 7f 58 48 89 c2 48 89 c6 48 c1 e0 08 48 c1 e2 04 48 29 d0 4c 8d ac 07 40 0d 00 00 <49> 8b 45 08 49 39 c4 77 19 48 89 df e8 11 e6 36 e1 48 83 c4 08 
[22486.198672] RIP  [<ffffffffa015668e>] radeon_fence_signaled+0x3e/0x90 [radeon]
[22486.202344]  RSP <ffff88080402b878>
[22486.204115] CR2: 0000000000000d48
[22486.211204] ---[ end trace 0f3b8a81fa241e74 ]---
Comment 1 Shawn Starr 2014-12-15 05:20:58 UTC 
Created attachment 110843 [details]
full kernel boot log
Comment 2 Shawn Starr 2016-02-26 19:06:22 UTC 
Close it, this is old, I haven't tried PRIME in a while to confirm, create new BZ if I can trigger this on new kernel.

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