Hi Hongbo, I got soft lockup message as below when running valkan test with two VFs, and work fine if reverting this patch. Could you help check it when you feel free? [ 1920.163455] NMI watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [deqp-vk:2175] [ 1920.163459] Modules linked in: amdkfd amd_iommu_v2 amdgpu(OE) ttm drm_kms_helper drm i2c_algo_bit fb_sys_fops syscopyarea sysfillrect sysimgblt snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_seq_device snd_timer aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd serio_raw snd mac_hid soundcore i2c_piix4 binfmt_misc parport_pc ppdev sunrpc lp parport autofs4 psmouse pata_acpi floppy [ 1920.163482] CPU: 1 PID: 2175 Comm: deqp-vk Tainted: G OE 4.9.0-custom #1 [ 1920.163483] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 1920.163484] task: ffff880139c63a80 task.stack: ffffc9000313c000 [ 1920.163485] RIP: 0010:[<ffffffff810c7c75>] [<ffffffff810c7c75>] native_queued_spin_lock_slowpath+0x15/0x1a0 [ 1920.163491] RSP: 0018:ffffc9000313f6d8 EFLAGS: 00000202 [ 1920.163492] RAX: 0000000000000001 RBX: ffff88012f054d80 RCX: 0000000000000000 [ 1920.163492] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff8801334899a8 [ 1920.163493] RBP: ffffc9000313f6d8 R08: 0000000000000000 R09: 0000000000000128 [ 1920.163493] R10: 000001b9269bb35e R11: 0000000000000001 R12: ffff88012f054e28 [ 1920.163494] R13: ffff88012f054d80 R14: ffff8800369ecc00 R15: ffff880133482778 [ 1920.163495] FS: 00007fc0cf438740(0000) GS:ffff88013fc80000(0000) knlGS:0000000000000000 [ 1920.163496] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1920.163496] CR2: 00007fc0c5100fa0 CR3: 000000013870d000 CR4: 00000000001406e0 [ 1920.163500] Stack: [ 1920.163500] ffffc9000313f6e8 ffffffff811816ef ffffc9000313f6f8 ffffffff817e1a10 [ 1920.163502] ffffc9000313f738 ffffffffa03242c0 ffff8800369ecc00 0000000000000400 [ 1920.163503] 0000000000000001 ffff88012f054d80 0000000000000002 ffff88012e831380 [ 1920.163505] Call Trace: [ 1920.163509] [<ffffffff811816ef>] queued_spin_lock_slowpath+0xb/0xf [ 1920.163513] [<ffffffff817e1a10>] _raw_spin_lock+0x20/0x30 [ 1920.163562] [<ffffffffa03242c0>] amdgpu_ttm_backend_unbind+0x50/0x1e0 [amdgpu] [ 1920.163567] [<ffffffffa02ecbee>] ttm_tt_unbind+0x1e/0x30 [ttm] [ 1920.163570] [<ffffffffa02ece27>] ttm_tt_destroy+0x17/0x60 [ttm] [ 1920.163572] [<ffffffffa02ed370>] ttm_bo_cleanup_memtype_use+0x30/0x70 [ttm] [ 1920.163575] [<ffffffffa02ee4fa>] ttm_bo_release+0x1ca/0x2a0 [ttm] [ 1920.163578] [<ffffffffa02ee5f4>] ttm_bo_unref+0x24/0x30 [ttm] [ 1920.163580] [<ffffffffa02f1ce7>] ttm_bo_pipeline_move+0x2a7/0x3a0 [ttm] [ 1920.163599] [<ffffffffa0325fbc>] amdgpu_move_blit+0x1bc/0x260 [amdgpu] [ 1920.163617] [<ffffffffa03263e9>] amdgpu_bo_move+0xb9/0x230 [amdgpu] [ 1920.163620] [<ffffffffa02eec38>] ttm_bo_handle_move_mem+0x268/0x590 [ttm] [ 1920.163623] [<ffffffffa02ef7ed>] ? ttm_bo_mem_space+0x38d/0x440 [ttm] [ 1920.163625] [<ffffffff8103d583>] ? __save_stack_trace+0x73/0xd0 [ 1920.163628] [<ffffffffa02efd74>] ttm_bo_validate+0x114/0x130 [ttm] [ 1920.163657] [<ffffffffa032e360>] ? amdgpu_cs_bo_validate.isra.5+0xb0/0xb0 [amdgpu] [ 1920.163675] [<ffffffffa032e325>] amdgpu_cs_bo_validate.isra.5+0x75/0xb0 [amdgpu] [ 1920.163693] [<ffffffffa032e360>] ? amdgpu_cs_bo_validate.isra.5+0xb0/0xb0 [amdgpu] [ 1920.163710] [<ffffffffa032e3a9>] amdgpu_cs_validate+0x49/0x1b0 [amdgpu] [ 1920.163727] [<ffffffffa032e360>] ? amdgpu_cs_bo_validate.isra.5+0xb0/0xb0 [amdgpu] [ 1920.163743] [<ffffffffa032e360>] ? amdgpu_cs_bo_validate.isra.5+0xb0/0xb0 [amdgpu] [ 1920.163762] [<ffffffffa033d57f>] amdgpu_vm_validate_level.isra.9+0x4f/0x90 [amdgpu] [ 1920.163791] [<ffffffffa032e360>] ? amdgpu_cs_bo_validate.isra.5+0xb0/0xb0 [amdgpu] [ 1920.163807] [<ffffffffa033d596>] amdgpu_vm_validate_level.isra.9+0x66/0x90 [amdgpu] [ 1920.163823] [<ffffffffa032e360>] ? amdgpu_cs_bo_validate.isra.5+0xb0/0xb0 [amdgpu] [ 1920.163840] [<ffffffffa033d596>] amdgpu_vm_validate_level.isra.9+0x66/0x90 [amdgpu] [ 1920.163856] [<ffffffffa033e606>] amdgpu_vm_validate_pt_bos+0x26/0x30 [amdgpu] [ 1920.163872] [<ffffffffa032fef8>] amdgpu_cs_ioctl+0xca8/0x1490 [amdgpu] [ 1920.163889] [<ffffffffa023cbac>] drm_ioctl+0x32c/0x440 [drm] [ 1920.163904] [<ffffffffa032f250>] ? amdgpu_cs_find_mapping+0xb0/0xb0 [amdgpu] [ 1920.163906] [<ffffffff811fe356>] ? mem_cgroup_commit_charge+0x76/0xe0 [ 1920.163908] [<ffffffff811c5529>] ? page_add_new_anon_rmap+0x89/0xc0 [ 1920.163910] [<ffffffff81194249>] ? lru_cache_add_active_or_unevictable+0x39/0xc0 [ 1920.163925] [<ffffffffa031104c>] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu] [ 1920.163927] [<ffffffff81220db6>] do_vfs_ioctl+0x96/0x5b0 [ 1920.163929] [<ffffffff810674d7>] ? __do_page_fault+0x267/0x4d0 [ 1920.163930] [<ffffffff81221349>] SyS_ioctl+0x79/0x90 [ 1920.163932] [<ffffffff8100392e>] do_syscall_64+0x6e/0x180 [ 1920.163933] [<ffffffff817e1d2f>] entry_SYSCALL64_slow_path+0x25/0x25 -----Original Message----- From: amd-gfx [mailto:amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Christian K?nig Sent: Friday, May 05, 2017 8:04 PM To: Zhou, David(ChunMing) <David1.Zhou at amd.com>; He, Hongbo <Hongbo.He at amd.com>; amd-gfx at lists.freedesktop.org Subject: Re: [PATCH] drm/amdgpu: extend lock range for race condition when gpu reset Reviewed-by: Christian König <christian.koenig at amd.com> Am 05.05.2017 um 09:33 schrieb zhoucm1: > Reviewed-by: Chunming Zhou <david1.zhou at amd.com> > > On 2017å¹´05æ??05æ?¥ 15:22, Roger.He wrote: >> to cover below case: >> 1. A task gart bind/unbind but not add to adev->gtt_list yet 2. at >> this time gpu reset, gtt only recover those gtt in adev->gtt_list >> >> Change-Id: Ifb4360e3b68624f2be67fa82100623cf4c451873 >> Signed-off-by: Roger.He <Hongbo.He at amd.com> >> --- >> drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 +- >> drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 6 ++++-- >> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 22 ++++++++++++++-------- >> 3 files changed, 19 insertions(+), 11 deletions(-) >> >> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h >> b/drivers/gpu/drm/amd/amdgpu/amdgpu.h >> index 90a69bf..5310781 100644 >> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h >> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h >> @@ -556,7 +556,7 @@ int amdgpu_gart_table_vram_pin(struct >> amdgpu_device *adev); >> void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev); >> int amdgpu_gart_init(struct amdgpu_device *adev); >> void amdgpu_gart_fini(struct amdgpu_device *adev); -void >> amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset, >> +int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset, >> int pages); >> int amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset, >> int pages, struct page **pagelist, diff --git >> a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c >> b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c >> index e7406ce..ccef3cf 100644 >> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c >> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c >> @@ -221,8 +221,9 @@ void amdgpu_gart_table_vram_free(struct >> amdgpu_device *adev) >> * >> * Unbinds the requested pages from the gart page table and >> * replaces them with the dummy page (all asics). >> + * Returns 0 for success, -EINVAL for failure. >> */ >> -void amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset, >> +int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset, >> int pages) >> { >> unsigned t; >> @@ -234,7 +235,7 @@ void amdgpu_gart_unbind(struct amdgpu_device >> *adev, uint64_t offset, >> if (!adev->gart.ready) { >> WARN(1, "trying to unbind memory from uninitialized GART >> !\n"); >> - return; >> + return -EINVAL; >> } >> t = offset / AMDGPU_GPU_PAGE_SIZE; @@ -255,6 +256,7 @@ void >> amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset, >> } >> mb(); >> amdgpu_gart_flush_gpu_tlb(adev, 0); >> + return 0; >> } >> /** >> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c >> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c >> index c3fb2f9..278f55b 100644 >> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c >> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c >> @@ -745,6 +745,7 @@ int amdgpu_ttm_bind(struct ttm_buffer_object *bo, >> struct ttm_mem_reg *bo_mem) >> return r; >> } >> + spin_lock(>t->adev->gtt_list_lock); >> flags = amdgpu_ttm_tt_pte_flags(gtt->adev, ttm, bo_mem); >> gtt->offset = (u64)bo_mem->start << PAGE_SHIFT; >> r = amdgpu_gart_bind(gtt->adev, gtt->offset, ttm->num_pages, @@ >> -753,12 +754,13 @@ int amdgpu_ttm_bind(struct ttm_buffer_object *bo, >> struct ttm_mem_reg *bo_mem) >> if (r) { >> DRM_ERROR("failed to bind %lu pages at 0x%08llX\n", >> ttm->num_pages, gtt->offset); >> - return r; >> + goto error_gart_bind; >> } >> - spin_lock(>t->adev->gtt_list_lock); >> + >> list_add_tail(>t->list, >t->adev->gtt_list); >> +error_gart_bind: >> spin_unlock(>t->adev->gtt_list_lock); >> - return 0; >> + return r; >> } >> int amdgpu_ttm_recover_gart(struct amdgpu_device *adev) @@ -789,6 >> +791,7 @@ int amdgpu_ttm_recover_gart(struct amdgpu_device >> *adev) >> static int amdgpu_ttm_backend_unbind(struct ttm_tt *ttm) >> { >> struct amdgpu_ttm_tt *gtt = (void *)ttm; >> + int r; >> if (gtt->userptr) >> amdgpu_ttm_tt_unpin_userptr(ttm); @@ -797,14 +800,17 @@ >> static int amdgpu_ttm_backend_unbind(struct ttm_tt *ttm) >> return 0; >> /* unbind shouldn't be done for GDS/GWS/OA in ttm_bo_clean_mm */ >> - if (gtt->adev->gart.ready) >> - amdgpu_gart_unbind(gtt->adev, gtt->offset, ttm->num_pages); >> - >> spin_lock(>t->adev->gtt_list_lock); >> + r = amdgpu_gart_unbind(gtt->adev, gtt->offset, ttm->num_pages); >> + if (r) { >> + DRM_ERROR("failed to unbind %lu pages at 0x%08llX\n", >> + gtt->ttm.ttm.num_pages, gtt->offset); >> + goto error_unbind; >> + } >> list_del_init(>t->list); >> +error_unbind: >> spin_unlock(>t->adev->gtt_list_lock); >> - >> - return 0; >> + return r; >> } >> static void amdgpu_ttm_backend_destroy(struct ttm_tt *ttm) > > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx _______________________________________________ amd-gfx mailing list amd-gfx at lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
