On Mon, Mar 22, 2021 at 8:26 PM David Miller <[email protected]> wrote: > > From: Dmitry Vyukov <[email protected]> > Date: Sat, 20 Mar 2021 15:28:51 +0100 > > > netdev_wait_allrefs() issues a warning if refcount does not drop to 0 > > after 10 seconds. While 10 second wait generally should not happen > > under normal workload in normal environment, it seems to fire falsely > > very often during fuzzing and/or in qemu emulation (~10x slower). > > At least it's not possible to understand if it's really a false > > positive or not. Automated testing generally bumps all timeouts > > to very high values to avoid flake failures. > > Make the timeout configurable for automated testing systems. > > Lowering the timeout may also be useful for e.g. manual bisection. > > The default value matches the current behavior. > > > > Signed-off-by: Dmitry Vyukov <[email protected]> > > Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=211877 > > Cc: [email protected] > > Cc: [email protected] > > I'd say a sysctl knob is much better than a compile time setting for this. > That way stock kernels can be used in these testing scenerios.
FTR, I've mailed v2 with a sysctl: https://lore.kernel.org/netdev/[email protected]/T/#u
