Hello Guo Ren,
This is a semi-automatic email about new static checker warnings.
The patch 00a9730e1007: "csky: Cache and TLB routines" from Sep 5,
2018, leads to the following Smatch complaint:
./arch/csky/mm/tlb.c:130 flush_tlb_page()
warn: variable dereferenced before check 'vma' (see line 128)
./arch/csky/mm/tlb.c
127 int cpu = smp_processor_id();
128 int newpid = cpu_asid(cpu, vma->vm_mm);
^^^^^^^^^^
Dereferenced
129
130 if (!vma || cpu_context(cpu, vma->vm_mm) != 0) {
^^^^
Checked too late.
131 page &= (PAGE_MASK << 1);
132
regards,
dan carpenter
