diff options
| author | Liam Howlett <liam.howlett@oracle.com> | 2021-06-28 19:39:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-29 10:53:51 -0700 |
| commit | 9016ddeddf8510f79b4c5816855cdd244e84ad7f (patch) | |
| tree | 03a107a3e7182752f6e5cfe1f671a2b7e3b2935b /kernel | |
| parent | 2beaf153e1d041e0a61e3aae618294f4a037055d (diff) | |
kernel/events/uprobes: use vma_lookup() in find_active_uprobe()
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/20210521174745.2219620-17-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>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/events/uprobes.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 6addc9780319..907d4ee00cb2 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -2046,8 +2046,8 @@ static struct uprobe *find_active_uprobe(unsigned long bp_vaddr, int *is_swbp) struct vm_area_struct *vma; mmap_read_lock(mm); - vma = find_vma(mm, bp_vaddr); - if (vma && vma->vm_start <= bp_vaddr) { + vma = vma_lookup(mm, bp_vaddr); + if (vma) { if (valid_vma(vma, false)) { struct inode *inode = file_inode(vma->vm_file); loff_t offset = vaddr_to_offset(vma, bp_vaddr); |