On Fri, Mar 18, 2022 at 04:49:45PM +0900, Byungchul Park wrote: > > I guess it was becasue of the commit b1fca27d384e8("kernel debug: > support resetting WARN*_ONCE"). Your script seems to reset WARN*_ONCE > repeatedly. I wasn't aware this was being done, but your guess was correct. The WARN_ONCE state is getting cleared between each test in xfstests, with the rationale (which IMO is quite reasonable) why this done in the xfstests commit descrition: commit c67ea2347454aebbe8eb6e825e9314d099b683da Author: Lukas Czerner <lczerner@xxxxxxxxxx> Date: Wed Jul 15 13:42:19 2020 +0200 check: clear WARN_ONCE state before each test clear WARN_ONCE state before each test to allow a potential problem to be reported for each test [Eryu: replace "/sys/kernel/debug" with $DEBUGFS_MNT ] Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx> Reviewed-by: Zorro Lang <zlang@xxxxxxxxxx> Signed-off-by: Eryu Guan <guaneryu@xxxxxxxxx> Cheers, - Ted