I've been occasionally getting the debugging warnings seen in the attached kernel log excerpt. Only for piglit amd_pinned_memory and for libdrm amdgpu_test, so I suspect it's pointing at a userptr related issue. Christian, any ideas?
-- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer
Jul 9 16:33:10 kaveri kernel: [ 1048.706008] DEBUG_LOCKS_WARN_ON(sem->owner != ((struct task_struct *)(1UL << 0))) Jul 9 16:33:10 kaveri kernel: [ 1048.706023] WARNING: CPU: 13 PID: 19903 at kernel/locking/rwsem.c:217 up_read_non_owner+0xd5/0x100 Jul 9 16:33:10 kaveri kernel: [ 1048.706029] 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) fat(E) edac_mce_amd(E) amdkfd(OE) kvm(E) irqbypass(E) crct10dif_pclmul(E) crc32_pclmul(E) snd_hda_codec_realtek(E) ghash_clmulni_intel(E) amdgpu(OE) wmi_bmof(E) radeon(OE) snd_hda_codec_generic(E) pcbc(E) snd_hda_codec_hdmi(E) snd_hda_intel(E) chash(OE) snd_hda_codec(E) gpu_sched(OE) ttm(OE) snd_hda_core(E) snd_hwdep(E) drm_kms_helper(OE) efi_pstore(E) aesni_intel(E) aes_x86_64(E) drm(OE) crypto_simd(E) snd_pcm(E) cryptd(E) r8169(E) i2c_algo_bit(E) glue_helper(E) pcspkr(E) efivars(E) k10temp(E) snd_timer(E) fb_sys_fops(E) mii(E) sg(E) ccp(E) syscopyarea(E) sp5100_tco(E) snd(E) sysfillrect(E) sysimgblt(E) soundcore(E) rng_core(E) i2c_piix4(E) Jul 9 16:33:10 kaveri kernel: [ 1048.706126] wmi(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) libahci(E) xhci_pci(E) libata(E) xhci_hcd(E) crc32c_intel(E) scsi_mod(E) usbcore(E) gpio_amdpt(E) gpio_generic(E) Jul 9 16:33:10 kaveri kernel: [ 1048.706191] CPU: 13 PID: 19903 Comm: amd_pinned_memo Tainted: G W OE 4.18.0-rc1+ #110 Jul 9 16:33:10 kaveri kernel: [ 1048.706195] Hardware name: Micro-Star International Co., Ltd. MS-7A34/B350 TOMAHAWK (MS-7A34), BIOS 1.80 09/13/2017 Jul 9 16:33:10 kaveri kernel: [ 1048.706202] RIP: 0010:up_read_non_owner+0xd5/0x100 Jul 9 16:33:10 kaveri kernel: [ 1048.706205] Code: e0 07 83 c0 03 38 d0 7c 04 84 d2 75 2b 8b 05 32 e5 d8 03 85 c0 75 a8 48 c7 c6 e0 43 47 a2 48 c7 c7 40 44 47 a2 e8 3b 99 ee ff <0f> 0b eb 91 e8 52 49 43 00 e9 57 ff ff ff e8 48 49 43 00 eb ce e8 Jul 9 16:33:10 kaveri kernel: [ 1048.706289] RSP: 0000:ffff8803ddc37ab8 EFLAGS: 00010286 Jul 9 16:33:10 kaveri kernel: [ 1048.706295] RAX: 0000000000000000 RBX: ffff8803ce344580 RCX: ffffffffa0c4d5e0 Jul 9 16:33:10 kaveri kernel: [ 1048.706299] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8803ee35ea90 Jul 9 16:33:10 kaveri kernel: [ 1048.706303] RBP: ffff8803ddc37b10 R08: ffffed007dc6bd53 R09: ffffed007dc6bd53 Jul 9 16:33:10 kaveri kernel: [ 1048.706308] R10: 0000000000000001 R11: ffffed007dc6bd52 R12: 0000559fbdfcb000 Jul 9 16:33:10 kaveri kernel: [ 1048.706311] R13: 0000559fbdfcc000 R14: 0000000000000001 R15: dffffc0000000000 Jul 9 16:33:10 kaveri kernel: [ 1048.706316] FS: 00007fc20c5207c0(0000) GS:ffff8803ee340000(0000) knlGS:0000000000000000 Jul 9 16:33:10 kaveri kernel: [ 1048.706320] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jul 9 16:33:10 kaveri kernel: [ 1048.706324] CR2: 0000559fbdfcb000 CR3: 00000003e8fae000 CR4: 00000000003406e0 Jul 9 16:33:10 kaveri kernel: [ 1048.706327] Call Trace: Jul 9 16:33:10 kaveri kernel: [ 1048.706337] __mmu_notifier_invalidate_range_end+0x14f/0x210 Jul 9 16:33:10 kaveri kernel: [ 1048.706346] wp_page_copy+0xc1d/0x1790 Jul 9 16:33:10 kaveri kernel: [ 1048.706355] ? __do_fault+0x310/0x310 Jul 9 16:33:10 kaveri kernel: [ 1048.706361] ? __lock_acquire+0x605/0x3670 Jul 9 16:33:10 kaveri kernel: [ 1048.706370] do_wp_page+0x422/0x1b10 Jul 9 16:33:10 kaveri kernel: [ 1048.706376] ? lock_acquire+0x10b/0x330 Jul 9 16:33:10 kaveri kernel: [ 1048.706381] ? finish_mkwrite_fault+0x560/0x560 Jul 9 16:33:10 kaveri kernel: [ 1048.706391] __handle_mm_fault+0x1b22/0x3130 Jul 9 16:33:10 kaveri kernel: [ 1048.706398] ? finish_task_switch+0x11f/0x670 Jul 9 16:33:10 kaveri kernel: [ 1048.706403] ? __pmd_alloc+0x430/0x430 Jul 9 16:33:10 kaveri kernel: [ 1048.706409] ? find_held_lock+0x32/0x1c0 Jul 9 16:33:10 kaveri kernel: [ 1048.706421] ? mark_held_locks+0xa8/0xf0 Jul 9 16:33:10 kaveri kernel: [ 1048.706426] ? handle_mm_fault+0x17e/0x7a0 Jul 9 16:33:10 kaveri kernel: [ 1048.706433] handle_mm_fault+0x257/0x7a0 Jul 9 16:33:10 kaveri kernel: [ 1048.706442] __do_page_fault+0x47f/0xa80 Jul 9 16:33:10 kaveri kernel: [ 1048.706450] ? retint_user+0x18/0x18 Jul 9 16:33:10 kaveri kernel: [ 1048.706455] ? mm_fault_error+0x2d0/0x2d0 Jul 9 16:33:10 kaveri kernel: [ 1048.706461] ? page_fault+0x8/0x30 Jul 9 16:33:10 kaveri kernel: [ 1048.706466] ? trace_hardirqs_off_thunk+0x1a/0x1c Jul 9 16:33:10 kaveri kernel: [ 1048.706473] ? page_fault+0x8/0x30 Jul 9 16:33:10 kaveri kernel: [ 1048.706479] page_fault+0x1e/0x30 Jul 9 16:33:10 kaveri kernel: [ 1048.706484] RIP: 0033:0x7fc20fae3357 Jul 9 16:33:10 kaveri kernel: [ 1048.706487] Code: 47 20 c5 fe 7f 44 17 c0 c5 fe 7f 47 40 c5 fe 7f 44 17 a0 c5 fe 7f 47 60 c5 fe 7f 44 17 80 48 01 fa 48 83 e2 80 48 39 d1 74 ba <c5> fd 7f 01 c5 fd 7f 41 20 c5 fd 7f 41 40 c5 fd 7f 41 60 48 81 c1 Jul 9 16:33:10 kaveri kernel: [ 1048.706570] RSP: 002b:00007ffe17619218 EFLAGS: 00010206 Jul 9 16:33:10 kaveri kernel: [ 1048.706575] RAX: 0000559fbdfc8010 RBX: 0000000000029000 RCX: 0000559fbdfcb000 Jul 9 16:33:10 kaveri kernel: [ 1048.706579] RDX: 0000559fbdfeb800 RSI: 0000000000000000 RDI: 0000559fbdfc8010 Jul 9 16:33:10 kaveri kernel: [ 1048.706583] RBP: 00000000000237f8 R08: 0000559fbdfc8010 R09: 0000559fbdfc0870 Jul 9 16:33:10 kaveri kernel: [ 1048.706586] R10: 0000000000000000 R11: 0000000000000004 R12: 00007fc20fb449d8 Jul 9 16:33:10 kaveri kernel: [ 1048.706590] R13: 0000559fbdfc8000 R14: 00007fc20fb3fc40 R15: 00007ffe176192c0 Jul 9 16:33:10 kaveri kernel: [ 1048.706601] irq event stamp: 109699 Jul 9 16:33:10 kaveri kernel: [ 1048.706608] hardirqs last enabled at (109699): [<ffffffffa0eab8ed>] mem_cgroup_commit_charge+0xbd/0xed0 Jul 9 16:33:10 kaveri kernel: [ 1048.706613] hardirqs last disabled at (109698): [<ffffffffa0eab8cc>] mem_cgroup_commit_charge+0x9c/0xed0 Jul 9 16:33:10 kaveri kernel: [ 1048.706619] softirqs last enabled at (107488): [<ffffffffa2200620>] __do_softirq+0x620/0x919 Jul 9 16:33:10 kaveri kernel: [ 1048.706625] softirqs last disabled at (107471): [<ffffffffa093443e>] irq_exit+0x19e/0x1d0
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