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torture: Stop hanging on panic 

By default, the "panic" kernel parameter is zero, which causes the kernel
to loop indefinitely after a panic().  The rcutorture scripting will
eventually kill the corresponding qemu process, but only after waiting
for the full run duration plus a few minutes.  This works, but delays
notifying the developer of the failure.

This commit therefore causes the rcutorture scripting to pass the
"panic=-1" kernel parameter, which caused the kernel to instead
unceremoniously shut down immediately.  This in turn causes qemu to
terminate, so that if all of the runs in a given batch panic(), the
rcutorture scripting can immediately proceed to the next batch.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2020-12-03 13:27:42 -08:00
parent 0beb394878
commit f716348f29
1 changed files with 1 additions and 0 deletions
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1
tools/testing/selftests/rcutorture/bin/functions.sh
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@ -203,6 +203,7 @@ identify_qemu () {
# and the TORTURE_QEMU_INTERACTIVE environment variable. # and the TORTURE_QEMU_INTERACTIVE environment variable.
identify_qemu_append () { identify_qemu_append () {
echo debug_boot_weak_hash echo debug_boot_weak_hash
echo panic=-1
local console=ttyS0 local console=ttyS0
case "$1" in case "$1" in
qemu-system-x86_64|qemu-system-i386) qemu-system-x86_64|qemu-system-i386)