selinux: hooks: use kmalloc() to allocate path buffer

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selinux_genfs_get_sid() allocates memory for a path with __get_free_page().

Such usage does not require a "page" and the size of the buffer should
actually be PATH_MAX which may be less than PAGE_SIZE on some
architectures.

Replace __get_free_page() for allocation of a path buffer with kmalloc()
and make it explicit that the buffer size is PATH_MAX.

Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

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Mike Rapoport (Microsoft) 2026-05-31 19:58:52 +03:00 • committed by Paul Moore

parent dc59e4fea9

commit 5adb9195e0

1 changed files with 3 additions and 3 deletions

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security/selinux/hooks.c

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