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torture: Make torture.sh KCSAN runs set CONFIG_RCU_TORTURE_TEST_CHK_RDR_STATE=y

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The RCU_TORTURE_TEST_CHK_RDR_STATE Kconfig option is used for low-level
debugging of rcutorture's generation of overlapping and nested RCU
readers.  It incurs significant overhead, and is thus not to be used
lightly.  But if it is not tested regularly, it won't be there when it
is needed, for example, it would have found an rcutorture bug in the
testing of srcu_up_read().

This commit therefore uses CONFIG_RCU_TORTURE_TEST_CHK_RDR_STATE=y when
building KCSAN kernels, but only for the --do-rcutorture case.

Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Neeraj Upadhyay (AMD) <neeraj.upadhyay@kernel.org>
This commit is contained in:
Paul E. McKenney 2025-05-15 10:20:08 -07:00 committed by Neeraj Upadhyay (AMD)
parent 4176ebdf97
commit 955a83469c
1 changed files with 6 additions and 1 deletions
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7
tools/testing/selftests/rcutorture/bin/torture.sh
View File

@ -378,7 +378,12 @@ function torture_set {
kcsan_kmake_tag="--kmake-args"
cur_kcsan_kmake_args="$kcsan_kmake_args"
fi
torture_one "$@" --kconfig "CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y" $kcsan_kmake_tag $cur_kcsan_kmake_args --kcsan
chk_rdr_state=
if test "${flavor}" = rcutorture
then
chk_rdr_state="CONFIG_RCU_TORTURE_TEST_CHK_RDR_STATE=y"
fi
torture_one "$@" --kconfig "CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y ${chk_rdr_state}" $kcsan_kmake_tag $cur_kcsan_kmake_args --kcsan
mv $T/last-resdir $T/last-resdir-kcsan || :
fi
}