Eric Lee / linux-smarc-t335x-v3.2

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Commit 17e465034a174d23e08cbb964aeda5e41e5d84ca

Authored by Roel Kluin
Committed by Linus Torvalds
1 parent 7b95809045
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

score: fix dereference of NULL pointer in local_flush_tlb_page() 

Don't dereference vma if it's NULL.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff

arch/score/mm/tlb-score.c
Diff comments   View file @ 17e4650
... ... @@ -158,7 +158,7 @@
158 158  
159 159 void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
160 160 {
161   - if (!vma || vma->vm_mm->context != 0) {
  161 + if (vma && vma->vm_mm->context != 0) {
162 162 unsigned long flags;
163 163 int oldpid, newpid, idx;
164 164 unsigned long vma_ASID = vma->vm_mm->context;