On Thu, Sep 05, 2024 at 10:12:41AM +0200, Peter Zijlstra wrote: > On Mon, Aug 26, 2024 at 08:35:06PM -0700, Darrick J. Wong wrote: > > [33965.988873] ------------[ cut here ]------------ > > [33966.013870] WARNING: CPU: 1 PID: 8992 at kernel/jump_label.c:295 __static_key_slow_dec_cpuslocked.part.0+0xb0/0xc0 > > [33966.040184] pc : __static_key_slow_dec_cpuslocked.part.0+0xb0/0xc0 > > [33966.042845] lr : __static_key_slow_dec_cpuslocked.part.0+0x48/0xc0 > > [33966.072840] Call trace: > > [33966.073838] __static_key_slow_dec_cpuslocked.part.0+0xb0/0xc0 > > [33966.076105] static_key_slow_dec+0x48/0x88 > > This corresponds to the: > > > > WARN_ON_ONCE(!static_key_slow_try_dec(key)); > > But but but,... my patch killed that function. So are you sure it is > applied ?! > > Because this sounds like exactly that issue again. > > Anyway, it appears I had totally forgotten about this issue again due to > holidays, sorry. Let me stare hard at Thomas' patch and make a 'pretty' > one that does boot. I've taken tglx's version with a small change (added comment) and boot tested it and queued it here: git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/urgent Could you please double check on both x86_64 and arm64? If green by with the build robots and your own testing I'll push this into tip/locking/urgent to be sent to Linus on Sunday. Hopefully finally resolving this issue.
