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Subject[PATCHv2 0/2] Fix crash due to vma_is_anonymous() false-positives
Date

Fix crash found by syzkaller.

The fix allows to remove ->vm_ops checks.

v2:
- Catch few more cases where we need to initialize ->vm_ops:
+ nommu;
+ ia64;
- Make sure that we initialize ->vm_ops even if ->mmap failed.
We need ->vm_ops in error path too.

Kirill A. Shutemov (2):
mm: Fix vma_is_anonymous() false-positives
mm: Drop unneeded ->vm_ops checks

arch/ia64/kernel/perfmon.c | 1 +
arch/ia64/mm/init.c | 2 ++
drivers/char/mem.c | 1 +
fs/binfmt_elf.c | 2 +-
fs/exec.c | 1 +
fs/hugetlbfs/inode.c | 1 +
fs/kernfs/file.c | 20 +-------------------
fs/proc/task_mmu.c | 2 +-
include/linux/mm.h | 5 ++++-
kernel/events/core.c | 2 +-
kernel/fork.c | 2 +-
mm/gup.c | 2 +-
mm/hugetlb.c | 2 +-
mm/khugepaged.c | 4 ++--
mm/memory.c | 12 ++++++------
mm/mempolicy.c | 10 +++++-----
mm/mmap.c | 25 ++++++++++++++++++-------
mm/mremap.c | 2 +-
mm/nommu.c | 13 ++++++++++---
mm/shmem.c | 1 +
mm/util.c | 12 ++++++++++++
21 files changed, 72 insertions(+), 50 deletions(-)

--
2.18.0

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