From: Hou Tao <houtao1@xxxxxxxxxx> Hi, The patchset aims to fix the problem of bpf memory allocator destruction when there is PREEMPT_RT kernel or kernel with arch_irq_work_has_interrupt() being false (e.g. 1-cpu arm32 host). The root cause is that there may be busy refill_work when the allocator is destorying and it may incur oops or other problems as shown in patch #1. Patch #1 fixes the problem by waiting for the completion of irq work during destorying and patch #2 is just a clean-up patch based on patch #1. Please see individual patches for more details. Comments are always welcome. Hou Tao (2): bpf: Wait for busy refill_work when destorying bpf memory allocator bpf: Use __llist_del_all() whenever possbile during memory draining kernel/bpf/memalloc.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) -- 2.29.2
