Package: src:linux Version: 4.19.16-1 Severity: important Tags: upstream Dear Maintainer,
(please also see the additional information in the footnotes below.) When using the vc4 video driver with Xorg on the Raspberry Pi 3 [raspi3], it seems to sooner or later fill up the CMA, leading to, e.g., this: [ 739.307920] [drm:vc4_bo_create [vc4]] *ERROR* Failed to allocate from CMA: [ 739.314932] [drm] V3D: 23468kb BOs (10) [ 739.321333] [drm] V3D shader: 144kb BOs (35) [ 739.327734] [drm] dumb: 8148kb BOs (4) When additionally the following happens, the screen stops updating until reboot [stops_updating]: [ 739.334049] vc4_v3d 3fc00000.v3d: Failed to allocate memory for tile binning: -12. You may need to enable CMA or give it more memory. This happens with cma=64M, cma=128M and cma=256M, though 128M seems to be the recommended size for vc4 use, according to comments in package raspi3-firmware's /etc/default/raspi3-firmware. ii raspi3-firmware 1.20190215-1 arm64 Raspberry Pi 2 and 3 GPU firmware and bootloaders With cma=128M, the error happens on a freshly booted, idle system running lightdm, after perhaps 10m-30m, or can be provoked by running a [screensaver]. A work-around is to force Xorg to use driver fbdev, which seems to work even after the tile binning error which otherwise would have required a reboot. I also get a lot of, e.g.: [ 739.135918] alloc_contig_range: [37400, 38400) PFNs busy I don't know if this is related or a different problem. Please somehow make it possible (or even automatic) for the screen update to continue without the need for a reboot. Fixes to CMA handling so that the tile binning error doesn't even happen anymore would be even better! Regards, Fabian (Please also see the footnotes below.) [raspi3] This machine was set up based on a Raspberry Pi 3 Debian buster preview image, from https://wiki.debian.org/RaspberryPi3 ; it says unofficial/unsupported, there, I hope this bug report still is ok as, as far as I understand, the unmodified Debian buster arm64 kernel seems to be used[1]. [1] Pulled in via apt from official mirror in sources.list: https://github.com/Debian/raspi3-image-spec/blob/master/raspi3.yaml#L72 [stops_updating] "Stops updating the screen" here means that the Xorg tty graphical contents don't change anymore, except for the mouse cursor. The mouse cursor can still be moved around, and even changes form on, e.g., window borders, and I can resize the terminal window up one line, and the cursor change on mouseover reflects the change; just nothing changes to the non-mousecursor visual picture. Also, tasking into console works fine, and tasking back into the Xorg tty restores the previous visual picture, and tasking back into the console again is also still possible. So no real "freeze" or hard crash, here, except that, after the tile binning error in dmesg, the Xorg tty graphical contents don't change (except for mouse cursor). [screensaver] The error can be provoked by running the following for some time: /usr/lib/xscreensaver/tessellimage -root -fill-screen This leads to a slightly different pattern of dmesg messages, though. The thing in common is that the screen stops updating, there, too, when the tile binning error quoted above happens. When provoked in this way, "grep ^CmaFree: /proc/meminfo" in a loop said 25564 kB directly before a tile binning error message, 7160 kB directly after, with values between 8000-10000 kB after, with recovery to 81740 kB after exiting tessellimage. But the screen update stays stopped. Additional dmesg output: [ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034] [ 0.000000] Linux version 4.19.0-2-arm64 (debian-kernel@lists.debian.org) (gcc version 8.2.0 (Debian 8.2.0-14)) #1 SMP Debian 4.19.16-1 (2019-01-17) [ 0.000000] Machine model: Raspberry Pi 3 Model B Rev 1.2 [...] [ 0.000000] cma: Reserved 128 MiB at 0x0000000033400000 [...] [ 0.000000] Memory: 780176K/970752K available (8700K kernel code, 1600K rwdata, 2788K rodata, 4864K init, 530K bss, 59504K reserved, 131072K cma-reserved) [...] [ 0.000193] Console: colour dummy device 80x25 [ 0.000682] console [tty0] enabled [...] [ 0.141070] simple-framebuffer 3e887000.framebuffer: framebuffer at 0x3e887000, 0x373800 bytes, mapped to 0x(____ptrval____) [ 0.141106] simple-framebuffer 3e887000.framebuffer: format=r5g6b5, mode=1824x984x16, linelength=3648 [ 0.162242] Console: switching to colour frame buffer device 228x61 [ 0.182688] simple-framebuffer 3e887000.framebuffer: fb0: simplefb registered! [...] [ 4.768075] raspberrypi-firmware soc:firmware: Attached to firmware from 2019-02-12 19:42 [...] [ 11.863850] vc4_hdmi 3f902000.hdmi: ASoC: Failed to create component debugfs directory [ 11.921037] vc4_hdmi 3f902000.hdmi: vc4-hdmi-hifi <-> 3f902000.hdmi mapping ok [ 11.945385] vc4_hdmi 3f902000.hdmi: ASoC: no DMI vendor name! [ 11.979202] vc4-drm soc:gpu: bound 3f902000.hdmi (ops vc4_hdmi_ops [vc4]) [ 12.004926] vc4-drm soc:gpu: bound 3f806000.vec (ops vc4_vec_ops [vc4]) [ 12.035507] vc4-drm soc:gpu: bound 3f004000.txp (ops vc4_txp_ops [vc4]) [ 12.086726] vc4-drm soc:gpu: bound 3f400000.hvs (ops vc4_hvs_ops [vc4]) [ 12.169266] vc4-drm soc:gpu: bound 3f206000.pixelvalve (ops vc4_crtc_ops [vc4]) [ 12.186736] vc4-drm soc:gpu: bound 3f207000.pixelvalve (ops vc4_crtc_ops [vc4]) [ 12.203918] vc4-drm soc:gpu: bound 3f807000.pixelvalve (ops vc4_crtc_ops [vc4]) [ 12.248590] vc4-drm soc:gpu: bound 3fc00000.v3d (ops vc4_v3d_ops [vc4]) [ 12.270202] checking generic (3e887000 373800) vs hw (0 ffffffffffffffff) [ 12.270219] fb: switching to vc4drmfb from simple [ 12.286291] Console: switching to colour dummy device 80x25 [ 12.295210] [drm] Initialized vc4 0.0.0 20140616 for soc:gpu on minor 0 [ 12.302047] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 12.308858] [drm] Driver supports precise vblank timestamp query. [ 12.373775] Console: switching to colour frame buffer device 240x67 [ 12.447976] vc4-drm soc:gpu: fb0: DRM emulated frame buffer device Some excerpts from /var/log/Xorg.0.log: [ 17.868] (II) xfree86: Adding drm device (/dev/dri/card0) [ 17.886] (II) no primary bus or device found [ 17.886] falling back to /sys/devices/platform/soc/soc:gpu/drm/card0 [...] [ 18.011] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so [...] [ 18.101] (II) modeset(0): using drv /dev/dri/card0 [...] [ 20.654] (II) modeset(0): [DRI2] Setup complete [ 20.654] (II) modeset(0): [DRI2] DRI driver: vc4 [ 20.654] (II) modeset(0): [DRI2] VDPAU driver: vc4 -- Package-specific info: ** Version: Linux version 4.19.0-2-arm64 (debian-kernel@lists.debian.org) (gcc version 8.2.0 (Debian 8.2.0-14)) #1 SMP Debian 4.19.16-1 (2019-01-17) ** Command line: bcm2708_fb.fbwidth=1824 bcm2708_fb.fbheight=984 bcm2708_fb.fbswap=1 dma.dmachans=0x7f35 bcm2709.boardrev=0xa02082 bcm2709.serial=[...] bcm2709.uart_clock=48000000 smsc95xx.macaddr=[...] vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=tty0 console=ttyS1,115200 root=/dev/mmcblk0p2 rw elevator=deadline fsck.repair=yes net.ifnames=0 cma=128M rootwait ** Tainted: C (1024) * Module from drivers/staging has been loaded. ** Kernel log: [ 499.856555] alloc_contig_range: [37000, 38200) PFNs busy [ 499.863352] alloc_contig_range: [37000, 38300) PFNs busy [ 499.869842] alloc_contig_range: [37400, 38400) PFNs busy [ 559.875179] alloc_contig_range: 39 callbacks suppressed [ 559.875191] alloc_contig_range: [35700, 36700) PFNs busy [ 559.887274] alloc_contig_range: [36c00, 37c00) PFNs busy [ 559.893765] alloc_contig_range: [36c00, 37d00) PFNs busy [ 559.900465] alloc_contig_range: [36c00, 37e00) PFNs busy [ 559.907193] alloc_contig_range: [36c00, 37f00) PFNs busy [ 559.913667] alloc_contig_range: [37000, 38000) PFNs busy [ 559.920236] alloc_contig_range: [37000, 38100) PFNs busy [ 559.927035] alloc_contig_range: [37000, 38200) PFNs busy [ 559.933560] alloc_contig_range: [37000, 38300) PFNs busy [ 559.940087] alloc_contig_range: [37400, 38400) PFNs busy [ 619.945816] alloc_contig_range: 39 callbacks suppressed [ 619.945828] alloc_contig_range: [35700, 36700) PFNs busy [ 680.002416] alloc_contig_range: [35700, 36700) PFNs busy [ 680.009068] alloc_contig_range: [36c00, 37c00) PFNs busy [ 680.016136] alloc_contig_range: [36c00, 37d00) PFNs busy [ 680.022796] alloc_contig_range: [36c00, 37e00) PFNs busy [ 680.029539] alloc_contig_range: [36c00, 37f00) PFNs busy [ 680.036234] alloc_contig_range: [37000, 38000) PFNs busy [ 680.042956] alloc_contig_range: [37000, 38100) PFNs busy [ 680.049597] alloc_contig_range: [37000, 38200) PFNs busy [ 680.056322] alloc_contig_range: [37000, 38300) PFNs busy [ 680.063057] alloc_contig_range: [37400, 38400) PFNs busy [ 739.070013] alloc_contig_range: 39 callbacks suppressed [ 739.070022] alloc_contig_range: [35700, 36700) PFNs busy [ 739.082093] alloc_contig_range: [36c00, 37c00) PFNs busy [ 739.088787] alloc_contig_range: [36c00, 37d00) PFNs busy [ 739.095577] alloc_contig_range: [36c00, 37e00) PFNs busy [ 739.102204] alloc_contig_range: [36c00, 37f00) PFNs busy [ 739.109079] alloc_contig_range: [37000, 38000) PFNs busy [ 739.115811] alloc_contig_range: [37000, 38100) PFNs busy [ 739.122455] alloc_contig_range: [37000, 38200) PFNs busy [ 739.129163] alloc_contig_range: [37000, 38300) PFNs busy [ 739.135918] alloc_contig_range: [37400, 38400) PFNs busy [ 739.307920] [drm:vc4_bo_create [vc4]] *ERROR* Failed to allocate from CMA: [ 739.314932] [drm] V3D: 23468kb BOs (10) [ 739.321333] [drm] V3D shader: 144kb BOs (35) [ 739.327734] [drm] dumb: 8148kb BOs (4) [ 739.334049] vc4_v3d 3fc00000.v3d: Failed to allocate memory for tile binning: -12. You may need to enable CMA or give it more memory. [ 2779.449085] alloc_contig_range: 164 callbacks suppressed [ 2779.449094] alloc_contig_range: [334c4, 334c5) PFNs busy [ 3139.868509] alloc_contig_range: [334cc, 334cd) PFNs busy [ 3799.628926] alloc_contig_range: [33463, 33464) PFNs busy [ 7699.127567] alloc_contig_range: [334c4, 334c5) PFNs busy [ 7879.339150] alloc_contig_range: [334c4, 334c5) PFNs busy [ 7939.408956] alloc_contig_range: [334c4, 334c5) PFNs busy [ 8059.540487] alloc_contig_range: [33598, 3359b) PFNs busy [ 8119.611432] alloc_contig_range: [334c4, 334c5) PFNs busy [ 8419.954991] alloc_contig_range: [33598, 3359b) PFNs busy [10099.896326] alloc_contig_range: [334c4, 334c5) PFNs busy [10159.965596] alloc_contig_range: [334c4, 334c5) PFNs busy [12499.678935] alloc_contig_range: [334da, 334db) PFNs busy [12499.684911] alloc_contig_range: [334df, 334e0) PFNs busy [12499.690877] alloc_contig_range: [334f6, 334f7) PFNs busy [12739.956325] alloc_contig_range: [334da, 334db) PFNs busy [12739.962453] alloc_contig_range: [334df, 334e0) PFNs busy [12739.968356] alloc_contig_range: [334f6, 334f7) PFNs busy [12739.974391] alloc_contig_range: [334ff, 33500) PFNs busy [14600.107691] alloc_contig_range: [334db, 334dc) PFNs busy [15259.872721] alloc_contig_range: [334db, 334dc) PFNs busy [15319.944302] alloc_contig_range: [334db, 334dc) PFNs busy [15440.090589] alloc_contig_range: [334db, 334dc) PFNs busy [15500.155237] alloc_contig_range: [334db, 334dc) PFNs busy [15559.222890] alloc_contig_range: [334db, 334dc) PFNs busy [18920.093345] alloc_contig_range: [33462, 33463) PFNs busy [19459.711617] alloc_contig_range: [33462, 33463) PFNs busy [19639.918652] alloc_contig_range: [33462, 33463) PFNs busy [22999.805126] alloc_contig_range: [334c2, 334c3) PFNs busy [25099.228929] alloc_contig_range: [334c2, 334c3) PFNs busy [25279.448616] alloc_contig_range: [334c2, 334c3) PFNs busy [25279.454520] alloc_contig_range: [334cc, 334cd) PFNs busy [26899.324100] alloc_contig_range: [334c2, 334c3) PFNs busy [27799.364929] alloc_contig_range: [334db, 334dc) PFNs busy [32119.349649] alloc_contig_range: [33594, 33597) PFNs busy [32599.899617] alloc_contig_range: [33594, 33597) PFNs busy [32899.242481] alloc_contig_range: [33594, 33597) PFNs busy [34520.147440] alloc_contig_range: [334cd, 334ce) PFNs busy [34699.355995] alloc_contig_range: [334cd, 334ce) PFNs busy [34699.361890] alloc_contig_range: [334ce, 334cf) PFNs busy [44179.322839] alloc_contig_range: [334c6, 334c8) PFNs busy [44179.340656] alloc_contig_range: [334c2, 334c3) PFNs busy [45019.306823] alloc_contig_range: [334c2, 334c3) PFNs busy [45499.861134] alloc_contig_range: [334c2, 334c3) PFNs busy [47540.239970] alloc_contig_range: [334c2, 334c3) PFNs busy [47719.440460] alloc_contig_range: [334c2, 334c3) PFNs busy [47839.579705] alloc_contig_range: [334c2, 334c3) PFNs busy [48019.789629] alloc_contig_range: [334c2, 334c3) PFNs busy [48079.859404] alloc_contig_range: [334c2, 334c3) PFNs busy [51080.327733] alloc_contig_range: [334cc, 334cd) PFNs busy [51139.390146] alloc_contig_range: [334cc, 334cd) PFNs busy [51199.460320] alloc_contig_range: [334cc, 334cd) PFNs busy [55639.751738] alloc_contig_range: [334da, 334db) PFNs busy [56780.097567] alloc_contig_range: [33463, 33464) PFNs busy [61100.175987] alloc_contig_range: [334c2, 334c3) PFNs busy [61880.082259] alloc_contig_range: [334c2, 334c3) PFNs busy [62120.364473] alloc_contig_range: [334d8, 334d9) PFNs busy [62720.061227] alloc_contig_range: [334cc, 334cd) PFNs busy ** Model information Device Tree model: Raspberry Pi 3 Model B Rev 1.2 ** Loaded modules: fuse appletalk psnap llc ip6t_REJECT nf_reject_ipv6 nft_counter ipt_REJECT nf_reject_ipv4 xt_tcpudp xt_comment nft_compat nf_tables nfnetlink nls_ascii nls_cp437 vfat fat joydev evdev vc4 hid_microsoft snd_soc_core hid_generic snd_pcm_dmaengine snd_pcm brcmfmac snd_timer brcmutil smsc95xx cfg80211 snd usbnet usbhid mii soundcore hid cec rfkill drm_kms_helper drm vchiq(C) bcm2835_thermal pwm_bcm2835 bcm2835_rng rng_core bcm2835_wdt leds_gpio ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 crc32c_generic fscrypto ecb aes_arm64 dwc2 udc_core usbcore sdhci_iproc sdhci_pltfm usb_common sdhci bcm2835 i2c_bcm2835 phy_generic ** PCI devices: not available ** USB devices: not available -- System Information: Debian Release: buster/sid APT prefers testing APT policy: (500, 'testing') Architecture: arm64 (aarch64) Kernel: Linux 4.19.0-2-arm64 (SMP w/4 CPU cores) Kernel taint flags: TAINT_CRAP Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages linux-image-4.19.0-2-arm64 depends on: ii initramfs-tools [linux-initramfs-tool] 0.133 ii kmod 26-1 ii linux-base 4.5 Versions of packages linux-image-4.19.0-2-arm64 recommends: ii apparmor 2.13.2-9 ii firmware-linux-free 3.4 ii irqbalance 1.5.0-3 Versions of packages linux-image-4.19.0-2-arm64 suggests: pn debian-kernel-handbook <none> ii linux-doc-4.19 4.19.16-1 Versions of packages linux-image-4.19.0-2-arm64 is related to: pn firmware-amd-graphics <none> pn firmware-atheros <none> pn firmware-bnx2 <none> pn firmware-bnx2x <none> ii firmware-brcm80211 20190114-1 pn firmware-cavium <none> pn firmware-intel-sound <none> pn firmware-intelwimax <none> pn firmware-ipw2x00 <none> pn firmware-ivtv <none> pn firmware-iwlwifi <none> pn firmware-libertas <none> pn firmware-linux-nonfree <none> pn firmware-misc-nonfree <none> pn firmware-myricom <none> pn firmware-netxen <none> pn firmware-qlogic <none> pn firmware-realtek <none> pn firmware-samsung <none> pn firmware-siano <none> pn firmware-ti-connectivity <none> pn xen-hypervisor <none> -- no debconf information
