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Date: Fri, 24 Nov 2017 17:29:20 +0100 From: Tobias Klausmann <tobias.johannes.klausmann@....thm.de> To: Christian König <christian.koenig@....com>, Michel Dänzer <michel.daenzer@....com>, Alex Deucher <alexander.deucher@....com>, Dave Airlie <airlied@...il.com>, LKML <linux-kernel@...r.kernel.org>, dri-devel <dri-devel@...ts.freedesktop.org> Subject: Re: Regression in TTM driver w/Linus' master On 11/24/17 4:35 PM, Christian König wrote: > Am 24.11.2017 um 16:17 schrieb Tobias Klausmann: >> >> On 11/24/17 3:54 PM, Daniel Vetter wrote: >>> On Thu, Nov 23, 2017 at 03:24:38PM +0100, Tobias Klausmann wrote: >>>> On 11/23/17 2:58 AM, Dave Airlie wrote: >>>>> On 23 November 2017 at 11:17, Laura Abbott <labbott@...hat.com> >>>>> wrote: >>>>>> Hi, >>>>>> >>>>>> Fedora QA testing reported a panic when booting up VMs >>>>>> using qmeu vga drivers >>>>>> (https://paste.fedoraproject.org/paste/498yRWTCJv2LKIrmj4EliQ) >>>>>> >>>>>> [ 30.108507] ------------[ cut here ]------------ >>>>>> [ 30.108920] kernel BUG at ./include/linux/gfp.h:408! >>>>>> [ 30.109356] invalid opcode: 0000 [#1] SMP >>>>>> [ 30.109700] Modules linked in: fuse nf_conntrack_netbios_ns >>>>>> nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT >>>>>> nf_reject_ipv6 >>>>>> xt_conntrack devlink ip_set nfnetlink ebtable_nat ebtable_broute >>>>>> bridge >>>>>> ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 >>>>>> ip6table_mangle >>>>>> ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 >>>>>> nf_defrag_ipv4 >>>>>> nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_raw >>>>>> iptable_security ebtable_filter ebtables ip6table_filter ip6_tables >>>>>> snd_hda_codec_generic kvm_intel kvm snd_hda_intel snd_hda_codec >>>>>> irqbypass >>>>>> ppdev snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm >>>>>> bochs_drm ttm >>>>>> joydev drm_kms_helper virtio_balloon snd_timer snd parport_pc drm >>>>>> soundcore >>>>>> parport i2c_piix4 nls_utf8 isofs squashfs zstd_decompress xxhash >>>>>> 8021q garp >>>>>> mrp stp llc virtio_net >>>>>> [ 30.115605] virtio_console virtio_scsi crct10dif_pclmul >>>>>> crc32_pclmul >>>>>> crc32c_intel ghash_clmulni_intel serio_raw virtio_pci virtio_ring >>>>>> virtio >>>>>> ata_generic pata_acpi qemu_fw_cfg sunrpc scsi_transport_iscsi loop >>>>>> [ 30.117425] CPU: 0 PID: 1347 Comm: gnome-shell Not tainted >>>>>> 4.15.0-0.rc0.git6.1.fc28.x86_64 #1 >>>>>> [ 30.118141] Hardware name: QEMU Standard PC (i440FX + PIIX, >>>>>> 1996), BIOS >>>>>> 1.10.2-2.fc27 04/01/2014 >>>>>> [ 30.118866] task: ffff923a77e03380 task.stack: ffffa78182228000 >>>>>> [ 30.119366] RIP: 0010:__alloc_pages_nodemask+0x35e/0x430 >>>>>> [ 30.119810] RSP: 0000:ffffa7818222bba8 EFLAGS: 00010202 >>>>>> [ 30.120250] RAX: 0000000000000001 RBX: 00000000014382c6 RCX: >>>>>> 0000000000000006 >>>>>> [ 30.120840] RDX: 0000000000000000 RSI: 0000000000000009 RDI: >>>>>> 0000000000000000 >>>>>> [ 30.121443] RBP: ffff923a760d6000 R08: 0000000000000000 R09: >>>>>> 0000000000000006 >>>>>> [ 30.122039] R10: 0000000000000040 R11: 0000000000000300 R12: >>>>>> ffff923a729273c0 >>>>>> [ 30.122629] R13: 0000000000000000 R14: 0000000000000000 R15: >>>>>> ffff923a7483d400 >>>>>> [ 30.123223] FS: 00007fe48da7dac0(0000) GS:ffff923a7cc00000(0000) >>>>>> knlGS:0000000000000000 >>>>>> [ 30.123896] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >>>>>> [ 30.124373] CR2: 00007fe457b73000 CR3: 0000000078313000 CR4: >>>>>> 00000000000006f0 >>>>>> [ 30.124968] Call Trace: >>>>>> [ 30.125186] ttm_pool_populate+0x19b/0x400 [ttm] >>>>>> [ 30.125578] ttm_bo_vm_fault+0x325/0x570 [ttm] >>>>>> [ 30.125964] __do_fault+0x19/0x11e >>>>>> [ 30.126255] __handle_mm_fault+0xcd3/0x1260 >>>>>> [ 30.126609] handle_mm_fault+0x14c/0x310 >>>>>> [ 30.126947] __do_page_fault+0x28c/0x530 >>>>>> [ 30.127282] do_page_fault+0x32/0x270 >>>>>> [ 30.127593] async_page_fault+0x22/0x30 >>>>>> [ 30.127922] RIP: 0033:0x7fe48aae39a8 >>>>>> [ 30.128225] RSP: 002b:00007ffc21c4d928 EFLAGS: 00010206 >>>>>> [ 30.128664] RAX: 00007fe457b73000 RBX: 000055cd4c1041a0 RCX: >>>>>> 00007fe457b73040 >>>>>> [ 30.129259] RDX: 0000000000300000 RSI: 0000000000000000 RDI: >>>>>> 00007fe457b73000 >>>>>> [ 30.129855] RBP: 0000000000000300 R08: 000000000000000c R09: >>>>>> 0000000100000000 >>>>>> [ 30.130457] R10: 0000000000000001 R11: 0000000000000246 R12: >>>>>> 000055cd4c1041a0 >>>>>> [ 30.131054] R13: 000055cd4bdfe990 R14: 000055cd4c104110 R15: >>>>>> 0000000000000400 >>>>>> [ 30.131648] Code: 11 01 00 0f 84 a9 00 00 00 65 ff 0d 6d cc dd >>>>>> 44 e9 0f >>>>>> ff ff ff 40 80 cd 80 e9 99 fe ff ff 48 89 c7 e8 e7 f6 01 00 e9 b7 >>>>>> fe ff ff >>>>>> <0f> 0b 0f ff e9 40 fd ff ff 65 48 8b 04 25 80 d5 00 00 8b 40 4c >>>>>> [ 30.133245] RIP: __alloc_pages_nodemask+0x35e/0x430 RSP: >>>>>> ffffa7818222bba8 >>>>>> [ 30.133836] ---[ end trace d4f1deb60784f40a ]--- >>>>>> >>>>>> This is based off of Linus' master branch at >>>>>> c8a0739b185d11d6e2ca7ad9f5835841d1cfc765 >>>>>> Configs are at >>>>>> https://git.kernel.org/pub/scm/linux/kernel/git/jwboyer/fedora.git/commit/?h=rawhide&id=0be14662c54f49b4e640868b9d67df18d39edff0 >>>>>> >>>>>> >>>>> Looks like a TTM regression due to: >>>>> >>>>> 0284f1ead87463bc17cf5e81a24fc65c052486f3 >>>>> drm/ttm: add transparent huge page support for cached allocations v2 >>>>> >>>>> If the driver requests dma32 pages, we can end up trying to alloc >>>>> huge >>>>> dma32 pages which triggers the oops. The bochs driver always requests >>>>> dma32 here. >>>>> >>>>> I'll send a rough patch once I boot it. >>>>> >>>>> Dave. >>>> >>>> Hi Dave, >>>> >>>> fyi only: It looks like this is not the only regression in this >>>> cycle with >>>> ttm, novueau seems to suffer as well [1]. >>> Adding ttm folks. Might be useful if we have an entry for ttm in >>> MAINTAINERS ... >>> -Daniel >> >> >> A bit more of investigation for the nouveau regression: This only >> show when Transparent Hugepages (CONFIG_TRANSPARENT_HUGEPAGE) are >> enable. Thanks Dave for pointing me to that! > > Yeah, sorry for that. I missed to handle the DMA32 case with > transparent huge page support. > > Dave already came up with a fix which should be already submitted. > > Christian. Hi Christian, no problem, rc1 isn't even released, so hitting bugs is expected! Yet Daves fix ("drm/ttm: don't attempt to use hugepages if dma32 requested (v2)" [1]) is not enough to fix the problem and a similiar backtrace to the one posted below in my first replay to this thread can be observed with Daves patch applied [2]. Greetings, Tobias [1] https://patchwork.freedesktop.org/patch/189812/ [2]: [ 171.559316] ------------[ cut here ]------------ [ 171.559335] kernel BUG at mm/shmem.c:4334! [ 171.559342] invalid opcode: 0000 [#1] PREEMPT SMP [ 171.559344] Modules linked in: fuse rfcomm af_packet bnep uvcvideo rtsx_usb_ms arc4 memstick videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videodev videobuf2_core btusb btrtl btbcm msr nls_iso8859_1 nls_cp437 vfat fat joydev hid_multitouch snd_hda_codec_hdmi ath10k_pci ath10k_core ath iTCO_wdt iTCO_vendor_support mac80211 snd_hda_codec_realtek intel_rapl snd_hda_codec_generic cfg80211 r8169 mii x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul intel_wmi_thunderbolt crc32c_intel acer_wmi sparse_keymap ghash_clmulni_intel snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep pcbc wmi_bmof snd_pcm snd_timer aesni_intel snd aes_x86_64 crypto_simd glue_helper cryptd pcspkr soundcore mei_me i2c_i801 mei thermal shpchp idma64 hci_uart serdev btqca intel_pch_thermal [ 171.559401] intel_lpss_pci btintel ucsi_acpi bluetooth typec_ucsi tps6598x ecdh_generic ac typec battery rfkill tpm_crb tpm_tis tpm_tis_core pinctrl_sunrisepoint intel_lpss_acpi pinctrl_intel intel_lpss tpm acpi_pad hid_generic usbhid rtsx_usb_sdmmc mmc_core rtsx_usb nouveau mxm_wmi ttm serio_raw i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect xhci_pci sysimgblt fb_sys_fops xhci_hcd usbcore drm i2c_hid wmi video button sg efivarfs [ 171.559437] CPU: 4 PID: 131 Comm: kworker/u16:2 Tainted: G W 4.14.0-desktop-rc0-debug+ #4 [ 171.559439] Hardware name: Acer Aspire VN7-593G/Pluto_KLS, BIOS V1.06 07/05/2017 [ 171.559445] Workqueue: ttm_swap ttm_shrink_work [ttm] [ 171.559448] task: ffff8f8c33b66400 task.stack: ffffa05fc1740000 [ 171.559453] RIP: 0010:shmem_read_mapping_page_gfp+0x4c/0x50 [ 171.559454] RSP: 0018:ffffa05fc1743d00 EFLAGS: 00010206 [ 171.559457] RAX: ffff8f8c30f34580 RBX: ffff8f8bcec83400 RCX: fffff74489520f80 [ 171.559459] RDX: 00000000014200ca RSI: 0000000000000000 RDI: ffff8f8c30f34360 [ 171.559460] RBP: ffffa05fc1743d08 R08: 0000000000000000 R09: ffffffffffffffff [ 171.559462] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 [ 171.559463] R13: ffff8f8c30f34580 R14: ffff8f8c323b7538 R15: ffff8f8c34ee7800 [ 171.559465] FS: 0000000000000000(0000) GS:ffff8f8c3ed00000(0000) knlGS:0000000000000000 [ 171.559467] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 171.559469] CR2: 00005583f0c37dc0 CR3: 00000001abc10004 CR4: 00000000003606e0 [ 171.559470] Call Trace: [ 171.559476] ttm_tt_swapout+0x156/0x280 [ttm] [ 171.559482] ttm_bo_swapout+0x217/0x260 [ttm] [ 171.559486] ? serio_raw_write+0x50/0x100 [serio_raw] [ 171.559491] ttm_shrink+0xab/0xe0 [ttm] [ 171.559496] ttm_shrink_work+0x14/0x20 [ttm] [ 171.559499] process_one_work+0x1e3/0x400 [ 171.559501] ? process_one_work+0x17c/0x400 [ 171.559506] worker_thread+0x30/0x3a0 [ 171.559510] kthread+0x152/0x170 [ 171.559512] ? process_one_work+0x400/0x400 [ 171.559514] ? kthread_create_worker_on_cpu+0x40/0x40 [ 171.559518] ret_from_fork+0x24/0x30 [ 171.559523] Code: 8d 55 f8 6a 00 45 31 c9 b9 01 00 00 00 e8 6d f0 ff ff 85 c0 5a 59 74 04 48 98 c9 c3 48 8b 7d f8 e8 fa de fd ff 48 8b 45 f8 c9 c3 <0f> 0b 66 90 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb 48 83 ec [ 171.559567] RIP: shmem_read_mapping_page_gfp+0x4c/0x50 RSP: ffffa05fc1743d00 [ 171.559570] ---[ end trace 3c2332c10029c3cd ]--- [ 185.835630] swiotlb_tbl_map_single: 24 callbacks suppressed [ 185.835632] nouveau 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes) [ 185.835635] swiotlb: coherent allocation failed for device 0000:01:00.0 size=2097152 [ 185.835637] CPU: 1 PID: 68 Comm: kworker/1:1 Tainted: G D W 4.14.0-desktop-rc0-debug+ #4 [ 185.835638] Hardware name: Acer Aspire VN7-593G/Pluto_KLS, BIOS V1.06 07/05/2017 [ 185.835642] Workqueue: pm pm_runtime_work [ 185.835644] Call Trace: [ 185.835648] dump_stack+0x8e/0xcb [ 185.835650] swiotlb_alloc_coherent+0xe4/0x160 [ 185.835653] x86_swiotlb_alloc_coherent+0x3e/0x50 [ 185.835659] ttm_dma_pool_get_pages+0x1e1/0x5d0 [ttm] [ 185.835664] ttm_dma_populate+0x244/0x330 [ttm] [ 185.835692] nouveau_ttm_tt_populate+0x142/0x1f0 [nouveau] [ 185.835695] ttm_tt_bind+0x23/0x50 [ttm] [ 185.835698] ttm_bo_handle_move_mem+0x570/0x5a0 [ttm] [ 185.835720] ? gf119_disp_chan_uevent_fini+0x60/0x70 [nouveau] [ 185.835724] ttm_bo_evict+0x146/0x340 [ttm] [ 185.835727] ? retint_kernel+0x2d/0x2d [ 185.835732] ttm_mem_evict_first+0x14c/0x1b0 [ttm] [ 185.835736] ttm_bo_force_list_clean+0x68/0x130 [ttm] [ 185.835739] ? pci_pm_runtime_resume+0xa0/0xa0 [ 185.835741] ttm_bo_evict_mm+0x21/0x50 [ttm] [ 185.835762] nouveau_do_suspend+0x7c/0x2b0 [nouveau] [ 185.835780] nouveau_pmops_runtime_suspend+0x54/0xc0 [nouveau] [ 185.835783] pci_pm_runtime_suspend+0x5a/0x170 [ 185.835785] ? pci_pm_runtime_resume+0xa0/0xa0 [ 185.835787] __rpm_callback+0xb4/0x1e0 [ 185.835789] ? pci_pm_runtime_resume+0xa0/0xa0 [ 185.835791] rpm_callback+0x1f/0x80 [ 185.835793] ? pci_pm_runtime_resume+0xa0/0xa0 [ 185.835795] rpm_suspend+0x119/0x530 [ 185.835797] ? pm_runtime_work+0x19/0xc0 [ 185.835799] pm_runtime_work+0x76/0xc0 [ 185.835802] process_one_work+0x1e3/0x400 [ 185.835803] ? process_one_work+0x17c/0x400 [ 185.835807] worker_thread+0x30/0x3a0 [ 185.835809] kthread+0x152/0x170 [ 185.835811] ? process_one_work+0x400/0x400 [ 185.835813] ? kthread_create_worker_on_cpu+0x40/0x40 [ 185.835815] ret_from_fork+0x24/0x30 ... > >> >> >> Greetings, >> >> Tobias >> >> >>>> Greetings, >>>> >>>> Tobias >>>> >>>> >>>> [1]: >>>> >>>> >>>> [ 404.918139] ------------[ cut here ]------------ >>>> [ 404.918147] kernel BUG at mm/shmem.c:4334! >>>> [ 404.918152] invalid opcode: 0000 [#2] PREEMPT SMP >>>> [ 404.918157] Modules linked in: rfcomm af_packet bnep uvcvideo >>>> videobuf2_vmalloc videobuf2_memops rtsx_usb_ms videobuf2_v4l2 memstick >>>> videodev videobuf2_core btusb btrtl btbcm arc4 msr snd_hda_codec_hdmi >>>> snd_hda_codec_realtek snd_hda_codec_generic joydev nls_iso8859_1 >>>> nls_cp437 >>>> hid_multitouch vfat fat iTCO_wdt iTCO_vendor_support intel_rapl >>>> x86_pkg_temp_thermal intel_powerclamp ath10k_pci coretemp >>>> ath10k_core ath >>>> kvm_intel mac80211 kvm irqbypass crct10dif_pclmul crc32_pclmul >>>> crc32c_intel >>>> ghash_clmulni_intel r8169 mii snd_hda_intel pcbc cfg80211 >>>> snd_hda_codec >>>> wmi_bmof snd_hda_core snd_hwdep acer_wmi sparse_keymap snd_pcm >>>> intel_wmi_thunderbolt aesni_intel snd_timer aes_x86_64 crypto_simd >>>> glue_helper cryptd snd soundcore idma64 pcspkr i2c_i801 mei_me shpchp >>>> intel_pch_thermal mei intel_lpss_pci ucsi_acpi >>>> [ 404.918239] typec_ucsi thermal hci_uart serdev btqca tps6598x >>>> typec >>>> btintel tpm_crb ac bluetooth tpm_tis intel_lpss_acpi tpm_tis_core >>>> ecdh_generic battery pinctrl_sunrisepoint rfkill pinctrl_intel >>>> intel_lpss >>>> tpm acpi_pad hid_generic usbhid rtsx_usb_sdmmc mmc_core rtsx_usb >>>> nouveau >>>> mxm_wmi ttm serio_raw i915 i2c_algo_bit drm_kms_helper syscopyarea >>>> xhci_pci >>>> sysfillrect sysimgblt fb_sys_fops xhci_hcd drm usbcore i2c_hid wmi >>>> video >>>> button sg efivarfs >>>> [ 404.918289] CPU: 1 PID: 2739 Comm: Civ6 Tainted: G D >>>> 4.14.0-desktop-rc0-debug+ #1 >>>> [ 404.918295] Hardware name: Acer Aspire VN7-593G/Pluto_KLS, BIOS >>>> V1.06 >>>> 07/05/2017 >>>> [ 404.918301] task: ffff9b3b49c7e280 task.stack: ffffb9a2035b4000 >>>> [ 404.918308] RIP: 0010:shmem_read_mapping_page_gfp+0x4c/0x50 >>>> [ 404.918313] RSP: 0018:ffffb9a2035b79c0 EFLAGS: 00010206 >>>> [ 404.918317] RAX: ffff9b3b4dd17700 RBX: ffff9b3b759cb900 RCX: >>>> ffffe4f10ac8b2c0 >>>> [ 404.918322] RDX: 00000000014200ca RSI: 0000000000000000 RDI: >>>> ffff9b3b4dd174e0 >>>> [ 404.918327] RBP: ffffb9a2035b79c8 R08: 0000000000000000 R09: >>>> ffffffffffffffff >>>> [ 404.918332] R10: 0000000000000000 R11: 0000000000000000 R12: >>>> 0000000000000000 >>>> [ 404.918337] R13: ffff9b3b4dd17700 R14: ffff9b3b7253eb38 R15: >>>> ffff9b3b75341000 >>>> [ 404.918343] FS: 00007fa952f69700(0000) GS:ffff9b3b7ec40000(0000) >>>> knlGS:0000000000000000 >>>> [ 404.918348] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >>>> [ 404.918353] CR2: 0000560940b5d000 CR3: 0000000193e94004 CR4: >>>> 00000000003606e0 >>>> [ 404.918358] Call Trace: >>>> [ 404.918365] ttm_tt_swapout+0x156/0x280 [ttm] >>>> [ 404.918371] ttm_bo_swapout+0x217/0x260 [ttm] >>>> [ 404.918379] ttm_shrink+0xab/0xe0 [ttm] >>>> [ 404.918384] ttm_mem_global_alloc_zone.constprop.6+0xd1/0x140 [ttm] >>>> [ 404.918391] ttm_mem_global_alloc+0x11/0x20 [ttm] >>>> [ 404.918397] ttm_bo_init_reserved+0x47/0x4f0 [ttm] >>>> [ 404.918403] ttm_bo_init+0x29/0xa0 [ttm] >>>> [ 404.918430] ? nouveau_bo_invalidate_caches+0x10/0x10 [nouveau] >>>> [ 404.918454] nouveau_bo_new+0x3f5/0x550 [nouveau] >>>> [ 404.918474] ? nouveau_bo_invalidate_caches+0x10/0x10 [nouveau] >>>> [ 404.918495] nouveau_gem_new+0x48/0x100 [nouveau] >>>> [ 404.918514] nouveau_gem_ioctl_new+0x45/0xc0 [nouveau] >>>> [ 404.918532] ? nouveau_gem_new+0x100/0x100 [nouveau] >>>> [ 404.918543] drm_ioctl_kernel+0x58/0xb0 [drm] >>>> [ 404.918551] drm_ioctl+0x315/0x3d0 [drm] >>>> [ 404.918568] ? nouveau_gem_new+0x100/0x100 [nouveau] >>>> [ 404.918576] ? trace_hardirqs_on+0xd/0x10 >>>> [ 404.918595] nouveau_drm_ioctl+0x6d/0xb0 [nouveau] >>>> [ 404.918601] do_vfs_ioctl+0x8e/0x660 >>>> [ 404.918605] ? __fget+0x102/0x1f0 >>>> [ 404.918609] SyS_ioctl+0x74/0x80 >>>> [ 404.918615] entry_SYSCALL_64_fastpath+0x23/0x9a >>>> [ 404.918619] RIP: 0033:0x7fa96396d2f7 >>>> [ 404.918622] RSP: 002b:00007fa952f43728 EFLAGS: 00000246 ORIG_RAX: >>>> 0000000000000010 >>>> [ 404.918628] RAX: ffffffffffffffda RBX: 00007fa93cad59c0 RCX: >>>> 00007fa96396d2f7 >>>> [ 404.918633] RDX: 00007fa952f43780 RSI: 00000000c0306480 RDI: >>>> 0000000000000022 >>>> [ 404.918638] RBP: 0000000000100000 R08: 0000000000000000 R09: >>>> 0000000000000000 >>>> [ 404.918643] R10: 00007fa852fa0260 R11: 0000000000000246 R12: >>>> 00007fa91c053370 >>>> [ 404.918648] R13: 0000000000100000 R14: 00007fa93e579a70 R15: >>>> 00007fa8530a1aa0 >>>> [ 404.918656] Code: 8d 55 f8 6a 00 45 31 c9 b9 01 00 00 00 e8 6d >>>> f0 ff ff >>>> 85 c0 5a 59 74 04 48 98 c9 c3 48 8b 7d f8 e8 fa de fd ff 48 8b 45 >>>> f8 c9 c3 >>>> <0f> 0b 66 90 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb 48 83 ec >>>> [ 404.918698] RIP: shmem_read_mapping_page_gfp+0x4c/0x50 RSP: >>>> ffffb9a2035b79c0 >>>> [ 404.918711] ---[ end trace 53b254d8157cf0e7 ]--- >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> dri-devel mailing list >>>> dri-devel@...ts.freedesktop.org >>>> https://lists.freedesktop.org/mailman/listinfo/dri-devel > >
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