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authorPetar Penkov <ppenkov@google.com>2017-08-29 11:20:32 -0700
committerAl Viro <viro@zeniv.linux.org.uk>2017-09-20 23:27:48 -0400
commita90bcb86ae700c12432446c4aa1819e7b8e172ec (patch)
treef172eb5b81e958457422d74e66587bf0071ddebe /ipc/shm.c
parent2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66e (diff)
iov_iter: fix page_copy_sane for compound pages
Issue is that if the data crosses a page boundary inside a compound page, this check will incorrectly trigger a WARN_ON. To fix this, compute the order using the head of the compound page and adjust the offset to be relative to that head. Fixes: 72e809ed81ed ("iov_iter: sanity checks for copy to/from page primitives") Signed-off-by: Petar Penkov <ppenkov@google.com> CC: Al Viro <viro@zeniv.linux.org.uk> CC: Eric Dumazet <edumazet@google.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'ipc/shm.c')
0 files changed, 0 insertions, 0 deletions