BUG: unable to handle kernel NULL pointer dereference at 0000000000000008

[Grodzovsky, Andrey]

+ Harry

Looks like this is happening during GPU reset due to job time out. I would first try to reproduce this just with a plain reset from sysfs.
Mikhail, also please provide add2line for dce110_setup_audio_dto.isra.8+0x171

Andrey

On 01/20/2019 06:59 AM, Mikhail Gavrilov wrote:

Hi folks.
Yet another kernel panic just happens:

[ 5605.179568] BUG: unable to handle kernel NULL pointer dereference
at 0000000000000008
[ 5605.179572] #PF error: [normal kernel read fault]
[ 5605.179573] PGD 0 P4D 0
[ 5605.179576] Oops: 0000 [#1] SMP NOPTI
[ 5605.179578] CPU: 5 PID: 2087 Comm: gnome-shell Tainted: G         C
       5.0.0-0.rc2.git4.3.fc30.x86_64 #1
[ 5605.179580] Hardware name: System manufacturer System Product
Name/ROG STRIX X470-I GAMING, BIOS 1103 11/16/2018
[ 5605.179627] RIP: 0010:build_audio_output.isra.2+0x9a/0x110 [amdgpu]
[ 5605.179629] Code: 48 89 43 24 8b 95 18 01 00 00 89 53 18 89 53 1c
48 8b 45 08 8b 80 c4 02 00 00 83 f8 04 74 51 83 e8 20 83 e0 df 75 13
48 8b 3f <48> 8b 47 08 48 8b 40 08 e8 89 3e 56 f2 89 43 2c 8b 85 58 02
00 00
[ 5605.179631] RSP: 0018:ffffb472c8f5b8b0 EFLAGS: 00010246
[ 5605.179632] RAX: 0000000000000000 RBX: ffffb472c8f5b8cc RCX: ffff99e027772800
[ 5605.179634] RDX: 0000000000082302 RSI: 0000000000879ec0 RDI: 0000000000000000
[ 5605.179635] RBP: ffff99dff0f74188 R08: 0000000000000008 R09: 0000000000000100
[ 5605.179636] R10: 0000000000000001 R11: 000000000000000f R12: ffff99dff0f74000
[ 5605.179637] R13: ffff99e027cec938 R14: ffff99dc099b0000 R15: ffff99e027cec800
[ 5605.179639] FS:  00007f37b5383640(0000) GS:ffff99e03d600000(0000)
knlGS:0000000000000000
[ 5605.179640] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5605.179641] CR2: 0000000000000008 CR3: 00000007f2b28000 CR4: 00000000003406e0
[ 5605.179642] Call Trace:
[ 5605.179688]  dce110_setup_audio_dto.isra.8+0x171/0x1b0 [amdgpu]
[ 5605.179734]  ? bios_set_scratch_critical_state+0x79/0x140 [amdgpu]
[ 5605.179746]  dce110_apply_ctx_to_hw+0x154/0x4a0 [amdgpu]
[ 5605.179792]  ? dm_pp_apply_display_requirements+0x196/0x1a0 [amdgpu]
[ 5605.179792]  ? dce12_update_clocks+0xea/0x120 [amdgpu]
[ 5605.179792]  dc_commit_state+0x2af/0x500 [amdgpu]
[ 5605.179792]  amdgpu_dm_atomic_commit_tail+0x1ef/0xb90 [amdgpu]
[ 5605.179792]  commit_tail+0x3d/0x70 [drm_kms_helper]
[ 5605.179792]  drm_atomic_helper_commit+0xdf/0x150 [drm_kms_helper]
[ 5605.179792]  drm_atomic_helper_set_config+0x75/0x80 [drm_kms_helper]
[ 5605.179792]  drm_mode_setcrtc+0x1a4/0x6e0 [drm]
[ 5605.179792]  ? drm_mode_getcrtc+0x180/0x180 [drm]
[ 5605.179792]  drm_ioctl_kernel+0xa9/0xf0 [drm]
[ 5605.179792]  drm_ioctl+0x201/0x3a0 [drm]
[ 5605.179792]  ? drm_mode_getcrtc+0x180/0x180 [drm]
[ 5605.179792]  amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
[ 5605.179792]  do_vfs_ioctl+0xa5/0x6f0
[ 5605.179792]  ksys_ioctl+0x60/0x90
[ 5605.179792]  __x64_sys_ioctl+0x16/0x20
[ 5605.179792]  do_syscall_64+0x60/0x1f0
[ 5605.179792]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 5605.179792] RIP: 0033:0x7f37b8eda39b
[ 5605.179792] Code: 0f 1e fa 48 8b 05 ed da 0c 00 64 c7 00 26 00 00
00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00
00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d bd da 0c 00 f7 d8 64 89
01 48
[ 5605.179792] RSP: 002b:00007ffdd307f5a8 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[ 5605.179792] RAX: ffffffffffffffda RBX: 00007ffdd307f5e0 RCX: 00007f37b8eda39b
[ 5605.179792] RDX: 00007ffdd307f5e0 RSI: 00000000c06864a2 RDI: 000000000000000b
[ 5605.179792] RBP: 00007ffdd307f5e0 R08: 0000000000000000 R09: 00005573cad41d40
[ 5605.179792] R10: 00007f37980091e0 R11: 0000000000000246 R12: 00000000c06864a2
[ 5605.179792] R13: 000000000000000b R14: 0000000000000000 R15: 00007f37980091e0
[ 5605.179792] Modules linked in: fuse rfcomm xt_CHECKSUM
ipt_MASQUERADE tun bridge stp llc devlink nf_conntrack_netbios_ns
nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT nf_reject_ipv6
xt_conntrack ebtable_nat ip6table_nat nf_nat_ipv6 ip6table_mangle
ip6table_raw ip6table_security iptable_nat nf_nat_ipv4 nf_nat
iptable_mangle iptable_raw iptable_security nf_conntrack
nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink
ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep sunrpc
vfat fat arc4 edac_mce_amd r8822be(C) kvm_amd kvm joydev
snd_hda_codec_realtek snd_hda_codec_generic irqbypass ledtrig_audio
snd_hda_codec_hdmi uvcvideo mac80211 snd_hda_intel videobuf2_vmalloc
videobuf2_memops videobuf2_v4l2 snd_hda_codec snd_usb_audio
videobuf2_common crct10dif_pclmul crc32_pclmul snd_hda_core videodev
snd_usbmidi_lib snd_rawmidi snd_hwdep ghash_clmulni_intel media
snd_seq snd_seq_device btusb btrtl btbcm btintel snd_pcm bluetooth
wmi_bmof cfg80211 eeepc_wmi asus_wmi
[ 5605.179792]  sparse_keymap video snd_timer snd sp5100_tco i2c_piix4
k10temp soundcore ecdh_generic ccp rfkill pcc_cpufreq gpio_amdpt
gpio_generic acpi_cpufreq amdgpu hid_logitech_hidpp chash amd_iommu_v2
gpu_sched ttm drm_kms_helper hid_logitech_dj crc32c_intel drm igb dca
i2c_algo_bit nvme nvme_core wmi pinctrl_amd hid_sony ff_memless
[ 5605.179792] CR2: 0000000000000008
[ 5605.179792] ---[ end trace 457bd70fe5772908 ]---


My kernel commit is: d7393226d15a



--
Best Regards,
Mike Gavrilov.




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