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However, in some error paths, it may return -1 > directly. > > For example, a failure at: > > if (hugetlb_acct_memory(h, gbl_reserve) < 0) > goto out_put_pages; > > results in returning -1 (since add = -1), which may be misinterpreted > in userspace as -EPERM. > > Fix this by explicitly capturing and propagating the return values from > helper functions, and using -EINVAL for all other failure cases. > > Fixes: 986f5f2b4be3 ("mm/hugetlb: make hugetlb_reserve_pages() return nr of entries updated") > Signed-off-by: Shameer Kolothum > --- > Addressed commenst from v1. Thanks! > https://lore.kernel.org/linux-mm/20251022102956.245736-1-skolothumtho@nvidia.com/ > --- > mm/hugetlb.c | 25 ++++++++++++++++++------- > 1 file changed, 18 insertions(+), 7 deletions(-) Reviewed-by: Jason Gunthorpe Jason