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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-06-12 23:32:25 +0200 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2022-06-13 18:54:52 +0200 |
| commit | 993d0b287e2ef7bee2e8b13b0ce4d2b5066f278e (patch) | |
| tree | 853081efc2b49076ac29148901f66752393130ae /mm/cma_sysfs.c | |
| parent | cfi: Fix __cfi_slowpath_diag RCU usage with cpuidle (diff) | |
| download | linux-993d0b287e2ef7bee2e8b13b0ce4d2b5066f278e.tar.xz linux-993d0b287e2ef7bee2e8b13b0ce4d2b5066f278e.zip | |
usercopy: Handle vm_map_ram() areas
vmalloc does not allocate a vm_struct for vm_map_ram() areas. That causes
us to deny usercopies from those areas. This affects XFS which uses
vm_map_ram() for its directories.
Fix this by calling find_vmap_area() instead of find_vm_area().
Fixes: 0aef499f3172 ("mm/usercopy: Detect vmalloc overruns")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Tested-by: Zorro Lang <zlang@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220612213227.3881769-2-willy@infradead.org
Diffstat (limited to 'mm/cma_sysfs.c')
0 files changed, 0 insertions, 0 deletions