Re: [PATCH net] psp: use unrcu_pointer() for the cmpxchg() on netdev psp_dev
From: Daniel Zahka <daniel.zahka@gmail.com>
Date: 2026-08-13 19:57:39
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On 8/13/26 3:34 PM, Wei Wang wrote:
From: Wei Wang <redacted>
sparse reports:
net/psp/psp_nl.c:513:13: sparse: sparse: cast removes address space
'__rcu' of expression
cmpxchg() returns typeof(*ptr) and its internal casts strip the __rcu
annotation. Wrap it in unrcu_pointer(), the documented way to use an
__rcu pointer with xchg() and friends.
This was introduced by commit 06c2dce2d0f6 ("psp: add new netlink cmd
for dev-assoc and dev-disassoc").
No functional change intended.
Reported-by: kernel test robot <redacted>
Closes: https://lore.kernel.org/oe-kbuild-all/202608080910.l9KvOH7O-lkp@intel.com/ (local)
Signed-off-by: Wei Wang <redacted>Commits targeting the net tree need a fixes tag.