osmith has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/38503?usp=email ) Change subject: testenv: qemu: get coredump and show backtrace ...................................................................... testenv: qemu: get coredump and show backtrace Related: OS#6600 Change-Id: Ia08ac58c43388b5ea4d3712c5ef83f54b538b10a --- M _testenv/data/scripts/qemu/qemu_functions.sh M _testenv/data/scripts/qemu/qemu_init.sh 2 files changed, 21 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/03/38503/1 diff --git a/_testenv/data/scripts/qemu/qemu_functions.sh b/_testenv/data/scripts/qemu/qemu_functions.sh index c0dd8cc..e2014a1 100755 --- a/_testenv/data/scripts/qemu/qemu_functions.sh +++ b/_testenv/data/scripts/qemu/qemu_functions.sh @@ -1,5 +1,6 @@ #!/bin/sh -ex INITRD_DIR="$PWD/_initrd" +CORE_DIR="$PWD/_coredump" # Add one or more files to the initramfs, with parent directories. # usr-merge: resolve symlinks for /lib -> /usr/lib etc. so "cp --parents" does @@ -171,6 +172,8 @@ machine_arg="-machine pc" fi + mkdir -p "$CORE_DIR" + # sudo is required to set up networking in qemu_ifup.sh # </dev/null to deatch stdin, so qemu doesn't capture ^C sudo sh -c " @@ -186,6 +189,13 @@ -serial stdio \ -netdev 'tap,id=nettest,script=$TESTENV_QEMU_SCRIPTS/qemu_ifup.sh' \ -device 'virtio-net-pci,netdev=nettest,mac=$(qemu_random_mac)' \ + -virtfs 'local,path=$CORE_DIR,mount_tag=coredir,security_model=passthrough,fmode=666,writeout=immediate' \ </dev/null " + + # Show coredump backtrace + if [ -e "$CORE_DIR/coredump" ]; then + execfn="$(file "$CORE_DIR/coredump" | grep -o "execfn: '.*'" | cut -d "'" -f 2)" + gdb --batch "$execfn" "$CORE_DIR/coredump" -ex bt + fi } diff --git a/_testenv/data/scripts/qemu/qemu_init.sh b/_testenv/data/scripts/qemu/qemu_init.sh index 1c8b39b..1c100f8 100755 --- a/_testenv/data/scripts/qemu/qemu_init.sh +++ b/_testenv/data/scripts/qemu/qemu_init.sh @@ -1,6 +1,7 @@ #!/bin/busybox sh echo "Running initrd-init.sh" set -ex +COREDUMP=/tmp/coredump export HOME=/root export LD_LIBRARY_PATH=/usr/local/lib @@ -27,10 +28,20 @@ ip link set lo up ip link set eth0 up +sysctl -w kernel.core_pattern="$COREDUMP" +ulimit -c unlimited + echo "KERNEL_TEST_VM_IS_READY" # Use '|| true' to avoid "attempting to kill init" kernel panic on failure /cmd.sh || true +if [ -e "$COREDUMP" ]; then + mkdir -p /mnt/coredir + mount -t 9p -o trans=virtio coredir /mnt/coredir -oversion=9p2000.L + chmod 666 "$COREDUMP" + cp "$COREDUMP" /mnt/coredir +fi + # Avoid kernel panic when init exits poweroff -f -- To view, visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/38503?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: osmo-ttcn3-hacks Gerrit-Branch: master Gerrit-Change-Id: Ia08ac58c43388b5ea4d3712c5ef83f54b538b10a Gerrit-Change-Number: 38503 Gerrit-PatchSet: 1 Gerrit-Owner: osmith &lt;osmith(a)sysmocom.de&gt;