13394 2019-06-12 13:02:21 +0000 qemu-arm hang whilst generating image 2019-11-07 17:58:39 +0000 1 1 7 Build System, Metadata & Runtime OE-Core devtools / tool chain 2.7 x86 Multiple RESOLVED OBSOLETE Medium normal 3.0 1 richard.purdie unassigned meta.mr.watcher meta.watcher mhalstead randy.macleod --- --- No (bug/feature does not impact docs) oldest_to_newest 84155 0 richard.purdie 2019-06-12 13:02:21 +0000 User mode qemu-arm demonstrated a hang whilst building an image, the build was running for 11 hours: https://autobuilder.yoctoproject.org/typhoon/#/builders/38/builds/696 its jammed in a core-image-lsb do_rootfs systemd(1)─┬─Cooker(32736)─┬─PRServ(32741)───{PRServ}(32742) │ ├─Worker(33255)───{Worker}(33370) │ ├─pseudo(9143)───Worker (Fakeroo(9148)─┬─core-image-lsb-(47468)───update_font_cac(13042)───qemuwrapper(13044)───+ │ │ └─{Worker (Fakeroo}(9181) $ pstree -p 47468 core-image-lsb-(47468)───update_font_cac(13042)───qemuwrapper(13044)───qemu-arm(13046)───{qemu-arm}(13048) 042 ? SN 0:00 /bin/sh /home/pokybuild/yocto-worker/qemuarm-lsb/build/build/tmp/work/qemuarm-poky-linux-gnueabi/core-image-lsb-s 13044 ? SN 0:00 /bin/sh /home/pokybuild/yocto-worker/qemuarm-lsb/build/build/tmp/work/qemuarm-poky-linux-gnueabi/core-image-lsb-s 13046 ? RNl 21115276:03 qemu-arm -r 3.2.0 -E LD_LIBRARY_PATH=/home/pokybuild/yocto-worker/qemuarm-lsb/build/build/tmp/work/qemuarm-p 15274 ? I 0:00 [kworker/36:2] rpurdie@tumbleweed-ty-1:~> cat /proc/13046/cmdline qemu-arm-r3.2.0-ELD_LIBRARY_PATH=/home/pokybuild/yocto-worker/qemuarm-lsb/build/build/tmp/work/qemuarm-poky-linux-gnueabi/core-image-lsb-sdk/1.0-r0/rootfs/usr/lib:/home/pokybuild/yocto-worker/qemuarm-lsb/build/build/tmp/work/qemuarm-poky-linux-gnueabi/core-image-lsb-sdk/1.0-r0/rootfs/lib-L/home/pokybuild/yocto-worker/qemuarm-lsb/build/build/tmp/work/qemuarm-poky-linux-gnueabi/core-image-lsb-sdk/1.0-r0/rootfs-EFC_DEBUG=1/home/pokybuild/yocto-worker/qemuarm-lsb/build/build/tmp/work/qemuarm-poky-linux-gnueabi/core-image-lsb-sdk/1.0-r0/rootfs/usr/libexec/fc-cache--sysroot=/home/pokybuild/yocto-worker/qemuarm-lsb/build/build/tmp/work/qemuarm-poky-linux-gnueabi/core-image-lsb-sdk/1.0-r0/rootfs--system-only-v 84156 1 richard.purdie 2019-06-12 13:04:34 +0000 Worker is tumbleweed-ty-1 and the qemu-arm process is using 100% cpu. 84157 2 richard.purdie 2019-06-12 13:10:47 +0000 Top shows its been running for: 13046 pokybui+ 25 5 4320852 12860 7832 R 100.0 0.010 5124107h qemu-arm which is about 805 years. 84183 3 randy.macleod 2019-06-13 14:57:07 +0000 This may be a rare bug that only happens once. Richard may gather more information about the cpu hogging process. 84236 4 mhalstead 2019-06-18 21:56:28 +0000 I updated the kernel shortly after this bug was filed and the problem has not yet repeated. Tumbleweed is running recent kernels (5.1.5 last week & currently 5.1.7) so we will see new bugs that may never repeat. 85491 5 richard.purdie 2019-11-07 15:59:32 +0000 We believe this was fixed by the kernel changes, it hasn't reappeared so closing, we can reopen if it reoccurs.