https://bugs.freedesktop.org/show_bug.cgi?id=87316

Bug ID: 87316 Summary: [radeonsi][bonaire][drm-next-3.19] unable to handle kernel NULL pointer dereference: radeon_fence_signaled Product: DRI Version: XOrg git Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: DRM/Radeon Assignee: dri-devel@lists.freedesktop.org Reporter: shawn.starr@rogers.com

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 ]---