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When executing ioctl to allocate tags, if the peer address is 0, mctp_alloc_local_tag now replaces it with 0xff. However, during tag dropping, this replacement is not performed, potentially causing the key not to be dropped as expected. Signed-off-by: John Wang <wangzhiqiang02@ieisystem.com> Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au> Link: https://patch.msgid.link/20240730084636.184140-1-wangzhiqiang02@ieisystem.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>