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rcutorture: Upper case solves the case of the vanishing NULL pointer 

Various security techniques can obfuscate pointer printouts on the
console.  Unfortunately, rcutorture relies on either "null" or all zeroes
to identify the last few statistics printouts at the end of the test.
These need to be identified because failing to do so will results in
false-positive complaints about grace-period hangs.

This commit therefore prints the "ver:" in capitals ("VER:") when
the RCU-protected pointer has been set to NULL, which causes rcutorture's
parse-console.sh script to correctly ignore these lines.

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
This commit is contained in:
Paul E. McKenney 2019-05-25 12:36:53 -07:00
parent 8997e6311e
commit 354ea05d02
1 changed files with 2 additions and 1 deletions
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3
kernel/rcu/rcutorture.c
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@ -1408,8 +1408,9 @@ rcu_torture_stats_print(void)
}
pr_alert("%s%s ", torture_type, TORTURE_FLAG);
pr_cont("rtc: %p ver: %lu tfle: %d rta: %d rtaf: %d rtf: %d ",
pr_cont("rtc: %p %s: %lu tfle: %d rta: %d rtaf: %d rtf: %d ",
rcu_torture_current,
rcu_torture_current ? "ver" : "VER",
rcu_torture_current_version,
list_empty(&rcu_torture_freelist),
atomic_read(&n_rcu_torture_alloc),