netfilter: nf_tables: always walk all pending catchall elements

[ Upstream commit 7cb9a23d7ae40a702577d3d8bacb7026f04ac2a9 ]

During transaction processing we might have more than one catchall element:
1 live catchall element and 1 pending element that is coming as part of the
new batch.

If the map holding the catchall elements is also going away, its
required to toggle all catchall elements and not just the first viable
candidate.

Otherwise, we get:
 WARNING: ./include/net/netfilter/nf_tables.h:1281 at nft_data_release+0xb7/0xe0 [nf_tables], CPU#2: nft/1404
 RIP: 0010:nft_data_release+0xb7/0xe0 [nf_tables]
 [..]
 __nft_set_elem_destroy+0x106/0x380 [nf_tables]
 nf_tables_abort_release+0x348/0x8d0 [nf_tables]
 nf_tables_abort+0xcf2/0x3ac0 [nf_tables]
 nfnetlink_rcv_batch+0x9c9/0x20e0 [..]

BUG=b/495779852
TEST=Presubmit
RELEASE_NOTE=Fixed KCTF-7cb9a23 in the Linux kernel.

cos-patch: security-high
Fixes: 628bd3e49cba ("netfilter: nf_tables: drop map element references from preparation phase")
Reported-by: Yiming Qian <yimingqian591@gmail.com>
Change-Id: I9f3b7acab7f39cecd34616c403ed7cfa7e8a3f66
Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/141103
Reviewed-by: Kevin Berry <kpberry@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>