new KASAN running piglit

Wed Jul 18 16:17:00 UTC 2018

On 2018-07-18 06:05 PM, Tom St Denis wrote:
> Hi Christian,
> 
> This patch:
> 
> [root at raven linux]# git bisect bad
> 90f362bdf0d0d06a126a5fd35b084436dd8250ad is the first bad commit
> commit 90f362bdf0d0d06a126a5fd35b084436dd8250ad
> Author: Christian König <christian.koenig at amd.com>
> Date:   Mon Jul 16 14:58:48 2018 +0200
> 
>     drm/amdgpu: change ring priority after pushing the job
> 
>     Pushing a job can change the ring assignment of an entity.
> 
>     Signed-off-by: Christian König <christian.koenig at amd.com>
>     Reviewed-by: Chunming Zhou <david1.zhou at amd.com>
> 
> :040000 040000 9a09d3e9d055e4f5024019861c334ee9cc0bd11b
> 522540c31c3d1a4f4a6fbac75e985e9a7f7e93c9 M      drivers
> 
> causes a KASAN while running piglit.  It's reproduceable 100% of the
> time.  The commit before this doesn't not cause a KASAN.

I got the attached KASAN use-after-free report while running piglit
today, could be the same?

-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer
-------------- next part --------------
[ 2367.329074] WARNING: CPU: 8 PID: 16019 at drivers/gpu/drm//amd/amdgpu/../display/dc/dce100/dce100_hw_sequencer.c:154 dce100_set_bandwidth+0x154/0x300 [amdgpu]
[ 2367.329086] Modules linked in: lz4(E) lz4_compress(E) cpufreq_powersave(E) cpufreq_userspace(E) cpufreq_conservative(E) binfmt_misc(E) nls_ascii(E) nls_cp437(E) vfat(E) edac_mce_amd(E) fat(E) amdkfd(OE) kvm(E) irqbypass(E) crct10dif_pclmul(E) crc32_pclmul(E) ghash_clmulni_intel(E) pcbc(E) radeon(OE) wmi_bmof(E) amdgpu(OE) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) chash(OE) gpu_sched(OE) snd_hda_codec_hdmi(E) ttm(OE) aesni_intel(E) aes_x86_64(E) crypto_simd(E) drm_kms_helper(OE) cryptd(E) snd_hda_intel(E) efi_pstore(E) glue_helper(E) r8169(E) pcspkr(E) snd_hda_codec(E) drm(OE) mii(E) snd_hda_core(E) efivars(E) sg(E) i2c_algo_bit(E) snd_hwdep(E) fb_sys_fops(E) syscopyarea(E) snd_pcm(E) sysfillrect(E) sp5100_tco(E) snd_timer(E) sysimgblt(E) i2c_piix4(E) k10temp(E) wmi(E) ccp(E) snd(E) soundcore(E)
[ 2367.329232]  rng_core(E) button(E) acpi_cpufreq(E) tcp_bbr(E) sch_fq(E) nct6775(E) hwmon_vid(E) sunrpc(E) efivarfs(E) ip_tables(E) x_tables(E) ext4(E) crc32c_generic(E) crc16(E) mbcache(E) jbd2(E) fscrypto(E) dm_mod(E) raid10(E) raid1(E) raid0(E) multipath(E) linear(E) md_mod(E) sd_mod(E) evdev(E) hid_generic(E) usbhid(E) hid(E) ahci(E) xhci_pci(E) libahci(E) xhci_hcd(E) libata(E) crc32c_intel(E) usbcore(E) scsi_mod(E) gpio_amdpt(E) gpio_generic(E)
[ 2367.329337] CPU: 8 PID: 16019 Comm: Xorg Tainted: G        W  OE     4.18.0-rc1+ #110
[ 2367.329344] Hardware name: Micro-Star International Co., Ltd. MS-7A34/B350 TOMAHAWK (MS-7A34), BIOS 1.80 09/13/2017
[ 2367.329532] RIP: 0010:dce100_set_bandwidth+0x154/0x300 [amdgpu]
[ 2367.329538] Code: 84 c0 74 08 3c 03 0f 8e 7d 01 00 00 8b 83 10 01 00 00 41 39 c6 44 0f 42 f0 48 81 c3 30 04 00 00 48 39 d3 75 90 45 85 f6 75 02 <0f> 0b 49 8d 9d 48 01 00 00 48 b8 00 00 00 00 00 fc ff df 44 89 74 
[ 2367.329663] RSP: 0018:ffff88028cc2f338 EFLAGS: 00010246
[ 2367.329672] RAX: 1ffff1007b1652d0 RBX: ffff8803d8b29ab0 RCX: 0000000000000000
[ 2367.329678] RDX: ffff8803d8b29ab0 RSI: 0000000000000000 RDI: ffff8803d8b29c5c
[ 2367.329684] RBP: dffffc0000000000 R08: ffffed007a55d632 R09: ffffed007a55d632
[ 2367.329690] R10: ffff88028cc2f140 R11: ffffed007a55d631 R12: 1ffff10051985e69
[ 2367.329695] R13: ffff8803c8bee600 R14: 0000000000000000 R15: ffff8803d8b28000
[ 2367.329703] FS:  00007f3ad605f940(0000) GS:ffff8803ee200000(0000) knlGS:0000000000000000
[ 2367.329709] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2367.329714] CR2: 000055720e2bb560 CR3: 00000003c1418000 CR4: 00000000003406e0
[ 2367.329720] Call Trace:
[ 2367.329882]  ? dce100_pplib_apply_display_requirements+0x1b0/0x1b0 [amdgpu]
[ 2367.330041]  ? bios_is_accelerated_mode+0xdb/0x140 [amdgpu]
[ 2367.330201]  dc_commit_state+0xd1e/0x1520 [amdgpu]
[ 2367.330364]  ? dc_destroy+0x90/0x90 [amdgpu]
[ 2367.330403]  ? drm_dev_dbg+0x1a0/0x1a0 [drm]
[ 2367.330571]  amdgpu_dm_atomic_commit_tail+0x968/0x3fa0 [amdgpu]
[ 2367.330592]  ? do_raw_spin_unlock+0x54/0x220
[ 2367.330602]  ? _raw_spin_unlock_irq+0x29/0x40
[ 2367.330751]  ? amdgpu_dm_do_flip+0xab0/0xab0 [amdgpu]
[ 2367.330774]  ? drm_atomic_helper_swap_state+0x7a2/0x15b0 [drm_kms_helper]
[ 2367.330784]  ? wait_for_completion_io_timeout+0x390/0x390
[ 2367.330793]  ? lock_downgrade+0x5e0/0x5e0
[ 2367.330815]  ? drm_atomic_helper_swap_state+0x6b5/0x15b0 [drm_kms_helper]
[ 2367.330964]  ? dm_plane_helper_prepare_fb+0x291/0xb00 [amdgpu]
[ 2367.330990]  ? drm_atomic_helper_wait_for_dependencies+0x3ee/0x7d0 [drm_kms_helper]
[ 2367.331017]  commit_tail+0x9a/0xf0 [drm_kms_helper]
[ 2367.331041]  drm_atomic_helper_commit+0x179/0x240 [drm_kms_helper]
[ 2367.331086]  drm_atomic_connector_commit_dpms+0x311/0x490 [drm]
[ 2367.331097]  ? ww_mutex_lock+0x34/0xa0
[ 2367.331138]  ? drm_modeset_backoff+0x1b1/0x4f0 [drm]
[ 2367.331181]  set_property_atomic+0x1ad/0x2b0 [drm]
[ 2367.331224]  ? drm_object_property_get_value+0xf0/0xf0 [drm]
[ 2367.331277]  drm_mode_obj_set_property_ioctl+0x371/0x590 [drm]
[ 2367.331318]  ? drm_mode_obj_find_prop_id+0x180/0x180 [drm]
[ 2367.331362]  ? drm_mode_connector_set_obj_prop+0x150/0x150 [drm]
[ 2367.331401]  drm_mode_connector_property_set_ioctl+0xe8/0x170 [drm]
[ 2367.331441]  ? drm_mode_connector_set_obj_prop+0x150/0x150 [drm]
[ 2367.331475]  ? drm_is_current_master+0x5f/0x110 [drm]
[ 2367.331510]  ? drm_ioctl_permit+0x148/0x190 [drm]
[ 2367.331545]  drm_ioctl_kernel+0x197/0x220 [drm]
[ 2367.331582]  ? drm_setversion+0x7d0/0x7d0 [drm]
[ 2367.331594]  ? __check_object_size+0x149/0x360
[ 2367.331631]  drm_ioctl+0x60a/0x970 [drm]
[ 2367.331672]  ? drm_mode_connector_set_obj_prop+0x150/0x150 [drm]
[ 2367.331708]  ? drm_ioctl_kernel+0x220/0x220 [drm]
[ 2367.331723]  ? lock_downgrade+0x5e0/0x5e0
[ 2367.331732]  ? __pm_runtime_resume+0x79/0x100
[ 2367.331742]  ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 2367.331751]  ? do_raw_spin_unlock+0x54/0x220
[ 2367.331867]  amdgpu_drm_ioctl+0xcc/0x1a0 [amdgpu]
[ 2367.331880]  do_vfs_ioctl+0x192/0xf30
[ 2367.331889]  ? __kasan_slab_free+0x145/0x180
[ 2367.331899]  ? ioctl_preallocate+0x1b0/0x1b0
[ 2367.331909]  ? __fget+0x1c8/0x300
[ 2367.331919]  ? lock_downgrade+0x5e0/0x5e0
[ 2367.331927]  ? __fget+0x49/0x300
[ 2367.331940]  ? __fget+0x1e0/0x300
[ 2367.331955]  ksys_ioctl+0x70/0x80
[ 2367.331966]  __x64_sys_ioctl+0x6f/0xb0
[ 2367.331975]  do_syscall_64+0xa5/0x3f0
[ 2367.331985]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 2367.331994] RIP: 0033:0x7f3ad700c097
[ 2367.331998] Code: b3 66 90 48 8b 05 f1 7d 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d c1 7d 0c 00 f7 d8 64 89 01 48 
[ 2367.332123] RSP: 002b:00007fff0a5fe478 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 2367.332133] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3ad700c097
[ 2367.332139] RDX: 00007fff0a5fe4b0 RSI: 00000000c01064ab RDI: 000000000000000d
[ 2367.332144] RBP: 00007fff0a5fe4a0 R08: 00007fff0a5fe438 R09: 00007fff0a5fe434
[ 2367.332150] R10: 00007fff0a5fe340 R11: 0000000000000246 R12: 00007fff0a5fe4b0
[ 2367.332156] R13: 00000000c01064ab R14: 000000000000000d R15: 000055720f3058f0
[ 2367.332171] irq event stamp: 0
[ 2367.332178] hardirqs last  enabled at (0): [<0000000000000000>]           (null)
[ 2367.332189] hardirqs last disabled at (0): [<ffffffff8411642c>] copy_process.part.32+0x109c/0x60d0
[ 2367.332198] softirqs last  enabled at (0): [<ffffffff841164ca>] copy_process.part.32+0x113a/0x60d0
[ 2367.332204] softirqs last disabled at (0): [<0000000000000000>]           (null)