diff options
Diffstat (limited to 'arch/m68k/kernel/sys_m68k.c')
| -rw-r--r-- | arch/m68k/kernel/sys_m68k.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c index bd0274c7592e..c586034d2a7a 100644 --- a/arch/m68k/kernel/sys_m68k.c +++ b/arch/m68k/kernel/sys_m68k.c @@ -488,6 +488,8 @@ sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5, if (!pmd_present(*pmd)) goto bad_access; pte = pte_offset_map_lock(mm, pmd, (unsigned long)mem, &ptl); + if (!pte) + goto bad_access; if (!pte_present(*pte) || !pte_dirty(*pte) || !pte_write(*pte)) { pte_unmap_unlock(pte, ptl); |