This is a note to let you know that I've just added the patch titled torture: Exclude "NOHZ tick-stop error" from fatal errors to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: torture-exclude-nohz-tick-stop-error-from-fatal-errors.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 8d68e68a781db80606c8e8f3e4383be6974878fd Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" <paulmck@xxxxxxxxxx> Date: Wed, 16 Sep 2020 10:10:10 -0700 Subject: torture: Exclude "NOHZ tick-stop error" from fatal errors From: Paul E. McKenney <paulmck@xxxxxxxxxx> commit 8d68e68a781db80606c8e8f3e4383be6974878fd upstream. The "NOHZ tick-stop error: Non-RCU local softirq work is pending" warning happens frequently and appears to be irrelevant to the various torture tests. This commit therefore filters it out. If there proves to be a need to pay attention to it a later commit will add an "advice" category to allow the user to immediately see that although something happened, it was not an indictment of the system being tortured. Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx> Signed-off-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- tools/testing/selftests/rcutorture/bin/console-badness.sh | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/tools/testing/selftests/rcutorture/bin/console-badness.sh +++ b/tools/testing/selftests/rcutorture/bin/console-badness.sh @@ -13,4 +13,5 @@ egrep 'Badness|WARNING:|Warn|BUG|===========|Call Trace:|Oops:|detected stalls on CPUs/tasks:|self-detected stall on CPU|Stall ended before state dump start|\?\?\? Writer stall state|rcu_.*kthread starved for|!!!' | grep -v 'ODEBUG: ' | grep -v 'This means that this is a DEBUG kernel and it is' | -grep -v 'Warning: unable to open an initial console' +grep -v 'Warning: unable to open an initial console' | +grep -v 'NOHZ tick-stop error: Non-RCU local softirq work is pending, handler' Patches currently in stable-queue which might be from paulmck@xxxxxxxxxx are queue-5.10/rcu-prevent-lockdep-rcu-splats-on-lock-acquisition-release.patch queue-5.10/torture-exclude-nohz-tick-stop-error-from-fatal-errors.patch queue-5.10/kcsan-instrument-memcpy-memset-memmove-with-newer-clang.patch queue-5.10/objtool-kcsan-add-volatile-read-write-instrumentatio.patch queue-5.10/rcu-fix-__this_cpu_read-lockdep-warning-in-rcu_force.patch