Re: [LKP] [mm/slub] BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1

FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit d2dc80750ee05ceb03c9b13b0531a782116d1ade ("mm/slub: optimize alloc/free fastpath by removing preemption on/off") +-------------------------------------------------------------+------------+------------+ | | 8e32336269 | d2dc80750e | +-------------------------------------------------------------+------------+------------+ | boot_successes | 8 | 4 | | boot_failures | 2 | 16 | | WARNING:at_net/netlink/genetlink.c:#genl_unbind() | 2 | 5 | | backtrace:do_group_exit | 2 | 5 | | backtrace:SyS_exit_group | 2 | 5 | | BUG:using_smp_processor_id()in_preemptible[#]code:swapper | 0 | 6 | | backtrace:getname_kernel | 0 | 6 | | backtrace:run_init_process | 0 | 6 | | backtrace:do_execve | 0 | 6 | | BUG:using_smp_processor_id()in_preemptible[#]code:init | 0 | 1 | | backtrace:vfs_stat | 0 | 1 | | backtrace:SyS_stat64 | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:kdevtmpfs | 0 | 5 | | backtrace:devtmpfsd | 0 | 5 | | backtrace:security_inode_alloc | 0 | 5 | | backtrace:inode_init_always | 0 | 5 | +-------------------------------------------------------------+------------+------------+