diff options
| author | Sagi Grimberg <sagi@grimberg.me> | 2024-06-26 10:01:53 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-06-27 16:44:32 -0700 |
| commit | 2d5f6801db8ec0ce97bc520ecd51a7be06a35042 (patch) | |
| tree | c19b695f4847f4553070da9e829be63c6d1884b3 /net/core | |
| parent | 3a158e2e8e48a4a53874957761545c37b19b318d (diff) | |
Revert "net: micro-optimize skb_datagram_iter"
This reverts commit 934c29999b57b835d65442da6f741d5e27f3b584.
This triggered a usercopy BUG() in systems with HIGHMEM, reported
by the test robot in:
https://lore.kernel.org/oe-lkp/202406161539.b5ff7b20-oliver.sang@intel.com
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Link: https://patch.msgid.link/20240626070153.759257-1-sagi@grimberg.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/datagram.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/core/datagram.c b/net/core/datagram.c index 95f242591fd2..e614cfd8e14a 100644 --- a/net/core/datagram.c +++ b/net/core/datagram.c @@ -417,14 +417,14 @@ static int __skb_datagram_iter(const struct sk_buff *skb, int offset, end = start + skb_frag_size(frag); if ((copy = end - offset) > 0) { struct page *page = skb_frag_page(frag); - u8 *vaddr = kmap_local_page(page); + u8 *vaddr = kmap(page); if (copy > len) copy = len; n = INDIRECT_CALL_1(cb, simple_copy_to_iter, vaddr + skb_frag_off(frag) + offset - start, copy, data, to); - kunmap_local(vaddr); + kunmap(page); offset += n; if (n != copy) goto short_copy; |