mirror of
https://github.com/vanhoefm/fragattacks.git
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100d334f43
We capture the dmesg that contains everything, but if a test causes a kernel crash we will miss all logging at higher levels like debug. Change the printk level to catch all of that too. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
127 lines
3.3 KiB
Bash
Executable File
127 lines
3.3 KiB
Bash
Executable File
#!/bin/sh
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# mount all kinds of things
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mount tmpfs -t tmpfs /etc
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# we need our own /dev/rfkill, and don't want device access
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mount tmpfs -t tmpfs /dev
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mount tmpfs -t tmpfs /tmp
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# some sockets go into /var/run, and / is read-only
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mount tmpfs -t tmpfs /var/run
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mount proc -t proc /proc
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mount sysfs -t sysfs /sys
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# needed for tracing
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mount debugfs -t debugfs /sys/kernel/debug
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export PATH=/usr/sbin:$PATH
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# reboot on any sort of crash
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sysctl kernel.panic_on_oops=1
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sysctl kernel.panic=1
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# get extra command line variables from /proc/cmdline
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TESTDIR=$(sed 's/.*testdir=\([^ ]*\) .*/\1/' /proc/cmdline)
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TIMEWARP=$(sed 's/.*timewarp=\([^ ]*\) .*/\1/' /proc/cmdline)
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EPATH=$(sed 's/.*EPATH=\([^ ]*\) .*/\1/' /proc/cmdline)
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ARGS=$(sed 's/.*ARGS=\([^ ]*\)\( \|$\).*/\1/' /proc/cmdline)
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# create /dev entries we need
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mknod -m 660 /dev/ttyS0 c 4 64
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mknod -m 660 /dev/random c 1 8
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mknod -m 660 /dev/urandom c 1 9
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mknod -m 666 /dev/null c 1 3
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mknod -m 666 /dev/kmsg c 1 11
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test -f /sys/class/misc/rfkill/dev && \
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mknod -m 660 /dev/rfkill c $(cat /sys/class/misc/rfkill/dev | tr ':' ' ')
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ln -s /proc/self/fd/0 /dev/stdin
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ln -s /proc/self/fd/1 /dev/stdout
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ln -s /proc/self/fd/2 /dev/stderr
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# create dummy sudo - everything runs as uid 0
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mkdir /tmp/bin
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cat > /tmp/bin/sudo << EOF
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#!/bin/bash
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exec "\$@"
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EOF
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chmod +x /tmp/bin/sudo
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# and put it into $PATH, as well as our extra-$PATH
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export PATH=/tmp/bin:$EPATH:$PATH
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# some tests assume adm/admin group(s) exist(s)
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cat > /etc/group <<EOF
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adm:x:0:
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admin:x:0:
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messagebus:x:106:
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EOF
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# root should exist
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cat > /etc/passwd <<EOF
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root:x:0:0:root:/tmp:/bin/bash
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messagebus:x:102:106::/var/run/dbus:/bin/false
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EOF
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cat > /etc/ethertypes <<EOF
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IPv4 0800 ip ip4
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ARP 0806 ether-arp
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IPv6 86DD ip6
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EOF
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cat > /etc/protocols <<EOF
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ip 0 IP
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icmp 1 ICMP
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tcp 6 TCP
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udp 17 UDP
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ipv6-icmp 58 IPv6-ICMP
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EOF
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# local network is needed for some tests
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ip link set lo up
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# create logs mountpoint and mount the logshare
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mkdir /tmp/logs
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mount -t 9p -o trans=virtio,rw logshare /tmp/logs
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# allow access to any outside directory (e.g. /tmp) we also have
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mkdir /tmp/host
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mount --bind / /tmp/host
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if [ "$TIMEWARP" = "1" ] ; then
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(
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while sleep 1 ; do
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date --set "@$(($(date +%s) + 19))"
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done
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) &
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fi
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echo 8 8 8 8 > /proc/sys/kernel/printk
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# check if we're rebooting due to a kernel panic ...
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if grep -q 'Kernel panic' /tmp/logs/console ; then
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echo "KERNEL CRASHED!" >/dev/ttyS0
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else
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# finally run the tests
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export USER=0
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export LOGDIR=/tmp/logs
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export DBFILE=$LOGDIR/results.db
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export PREFILL_DB=y
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# some tests need CRDA, install a simple uevent helper
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# and preload the 00 domain it will have asked for already
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echo $TESTDIR/vm/uevent.sh > /sys/kernel/uevent_helper
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COUNTRY=00 crda
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mkdir -p /var/run/dbus
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touch /var/run/dbus/hwsim-test
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chown messagebus.messagebus /var/run/dbus
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dbus-daemon --config-file=$TESTDIR/vm/dbus.conf --fork
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cd $TESTDIR
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./run-all.sh $(cat /tmp/host$ARGS) </dev/ttyS0 >/dev/ttyS0 2>&1
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if test -d /sys/kernel/debug/gcov ; then
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cp -ar /sys/kernel/debug/gcov /tmp/logs/
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# these are broken as they're updated while being read ...
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find /tmp/logs/gcov/ -wholename '*kernel/gcov/*' -print0 | xargs -0 rm
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fi
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#bash </dev/ttyS0 >/dev/ttyS0 2>&1
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fi
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# and shut down the machine again
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halt -f -p
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