igt@debugfs_test@read_all_entries - incomplete - BUG: kernel NULL pointer dereference, address: 000000000000007c
<6> [21.998747] Console: switching to colour dummy device 80x25
<6> [21.998847] [IGT] debugfs_test: executing
<6> [22.004897] [IGT] debugfs_test: starting subtest read_all_entries
<7> [22.005086] [IGT] Reading file "i915_lpsp_capability"
<1> [22.005158] BUG: kernel NULL pointer dereference, address: 000000000000007c
<1> [22.005161] #PF: supervisor read access in kernel mode
<1> [22.005163] #PF: error_code(0x0000) - not-present page
<6> [22.005164] PGD 0 P4D 0
<4> [22.005168] Oops: 0000 [#1] PREEMPT SMP PTI
<4> [22.005170] CPU: 0 PID: 936 Comm: debugfs_test Not tainted 5.8.0-rc4-CI-CI_DRM_8741+ #1
<4> [22.005172] Hardware name: Dell Inc. XPS 13 9360/0823VW, BIOS 2.9.0 07/09/2018
<4> [22.005220] RIP: 0010:i915_lpsp_capability_show+0x44/0xc0 [i915]
<4> [22.005223] Code: 0f b6 81 ca 0d 00 00 3c 0b 74 77 76 19 3c 0c 75 44 83 7e 7c 01 7e 2f 48 c7 c6 5b d7 48 a0 e8 c3 ab 05 e1 31 c0 c3 3c 09 72 2b <8b> 46 7c 85 c0 75 e6 8b 82 e4 00 00 00 89 c2 83 e2 fb 83 fa 0a 74
<4> [22.005225] RSP: 0018:ffffc90000c8be38 EFLAGS: 00010246
<4> [22.005227] RAX: 0000000000000009 RBX: ffff88826a12bc18 RCX: ffff888250d40000
<4> [22.005228] RDX: ffff88825222c000 RSI: 0000000000000000 RDI: ffff88826a12bbf0
<4> [22.005230] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
<4> [22.005232] R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90000c8bf08
<4> [22.005233] R13: 00000000ffffffff R14: 0000000000000001 R15: ffff88826a12bbf0
<4> [22.005235] FS: 00007f5cd9e1de40(0000) GS:ffff888276400000(0000) knlGS:0000000000000000
<4> [22.005237] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [22.005239] CR2: 000000000000007c CR3: 00000002558d6001 CR4: 00000000003606f0
<4> [22.005240] Call Trace:
<4> [22.005245] seq_read+0xcb/0x420
<4> [22.005250] full_proxy_read+0x51/0x80
<4> [22.005253] vfs_read+0x99/0x170
<4> [22.005255] ksys_read+0xa2/0xe0
<4> [22.005259] do_syscall_64+0x56/0xe0
<4> [22.005261] entry_SYSCALL_64_after_hwframe+0x44/0xa9
<4> [22.005262] RIP: 0033:0x7f5cd957f34e
<4> [22.005263] Code: Bad RIP value.
<4> [22.005264] RSP: 002b:00007ffc70ae9548 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
<4> [22.005266] RAX: ffffffffffffffda RBX: 000055d2d6098d60 RCX: 00007f5cd957f34e
<4> [22.005267] RDX: 0000000000000200 RSI: 00007ffc70ae9570 RDI: 000000000000000b
<4> [22.005268] RBP: 000055d2d4c17d35 R08: 0000000000000000 R09: 0000000000000025
<4> [22.005269] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
<4> [22.005270] R13: 000055d2d6098dd3 R14: 000000000000000a R15: 000000000000000b
<4> [22.005273] Modules linked in: r8152 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio mei_hdcp i915 x86_pkg_temp_thermal coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core snd_pcm cdc_ether usbnet mii mei_me mei intel_lpss_pci prime_numbers i2c_hid btusb btrtl btbcm btintel bluetooth pinctrl_sunrisepoint pinctrl_intel ecdh_generic ecc
<4> [22.005285] CR2: 000000000000007c
<4> [22.005287] ---[ end trace 9100edd31a2a32ba ]---https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8741/fi-kbl-7560u/igt_runner0.txt
[21.961948] [002/171] (960s left) debugfs_test (read_all_entries)
Starting subtest: read_all_entries
[22.114392] Killing the test because the kernel is tainted.
[22.125994] Aborting: Lockdep not active
/proc/lockdep_stats contents:
lock-classes: 1634 [max: 8192]
direct dependencies: 13544 [max: 32768]
indirect dependencies: 67020
all direct dependencies: 301688
dependency chains: 18695 [max: 131072]
dependency chain hlocks used: 85267 [max: 655360]
dependency chain hlocks lost: 0
in-hardirq chains: 191
in-softirq chains: 525
in-process chains: 17979
stack-trace entries: 134391 [max: 1048576]
number of stack traces: 7381
number of stack hash chains: 5961
combined max dependencies: 1815836160
hardirq-safe locks: 88
hardirq-unsafe locks: 1044
softirq-safe locks: 164
softirq-unsafe locks: 964
irq-safe locks: 188
irq-unsafe locks: 1044
hardirq-read-safe locks: 3
hardirq-read-unsafe locks: 250
softirq-read-safe locks: 11
softirq-read-unsafe locks: 243
irq-read-safe locks: 12
irq-read-unsafe locks: 250
uncategorized locks: 274
unused locks: 0
max locking depth: 17
max bfs queue depth: 486
chain lookup misses: 18800
chain lookup hits: 19884355
cyclic checks: 18079
redundant checks: 0
redundant links: 0
find-mask forwards checks: 3361
find-mask backwards checks: 4509
hardirq on events: 12647886
hardirq off events: 12647886
redundant hardirq ons: 29240
redundant hardirq offs: 7642891
softirq on events: 123820
softirq off events: 123820
redundant softirq ons: 0
redundant softirq offs: 0
debug_locks: 0
zapped classes: 0
zapped lock chains: 0
large chain blocks: 1
[22.126187] Closing watchdogs
Done.