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| author | Liam Howlett <liam.howlett@oracle.com> | 2021-06-28 19:39:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-29 10:53:51 -0700 |
| commit | 7f7020ac0dc9a7a7dfb2237c6e8ed13f40162a6b (patch) | |
| tree | 24bc8aebc1a8bfe7a6a4dc85e4c1cad653ea009b | |
| parent | 900c83f88af06bf0466c28bdde8a2c011b855e44 (diff) | |
| download | lwn-7f7020ac0dc9a7a7dfb2237c6e8ed13f40162a6b.tar.gz lwn-7f7020ac0dc9a7a7dfb2237c6e8ed13f40162a6b.zip | |
arch/mips/kernel/traps: use vma_lookup() instead of find_vma()
Use vma_lookup() to find the VMA at a specific address. As vma_lookup()
will return NULL if the address is not within any VMA, the start address
no longer needs to be validated.
Link: https://lkml.kernel.org/r/20210521174745.2219620-8-Liam.Howlett@Oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/mips/kernel/traps.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 0b4e06303c55..6f07362de5ce 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -784,7 +784,6 @@ void force_fcr31_sig(unsigned long fcr31, void __user *fault_addr, int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcr31) { int si_code; - struct vm_area_struct *vma; switch (sig) { case 0: @@ -800,8 +799,7 @@ int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcr31) case SIGSEGV: mmap_read_lock(current->mm); - vma = find_vma(current->mm, (unsigned long)fault_addr); - if (vma && (vma->vm_start <= (unsigned long)fault_addr)) + if (vma_lookup(current->mm, (unsigned long)fault_addr)) si_code = SEGV_ACCERR; else si_code = SEGV_MAPERR; |