ANDROID: revert all xt_qtaguid stuff

Revert "ANDROID: xt_qtaguid: fix UAF race"
This reverts commit 5efc888d.

Revert "ANDROID: xt_qtaguid: Remove tag_entry from process list on untag"
This reverts commit 5a7c121b2903285f0f97c3352e560274116ab984.

Revert "ANDROID: xt_qtaguid: Remove unnecessary null checks to device's name"
This reverts commit 441e17f7.

Revert "ANDROID: qtaguid: Fix the UAF probelm with tag_ref_tree"
This reverts commit b4d74821.

Revert "ANDROID: netfilter: xt_qtaguid: Fix 4.14 compilation"
This reverts commit 2f6e1d62.

Revert "ANDROID: netfilter: xt_qtaguid: Use sk_uid to replace uid get from socket file"
This reverts commit 10937966.

Revert "ANDROID: netfilter: xt_qtaguid: fix handling for cases where tunnels are used."
This reverts commit 972ca00d.

Revert "ANDROID: netfilter: xt_qtaguid: handle properly request sockets"
This reverts commit 5824b89f.

Revert "ANDROID: netfilter: xt_qtaguid: Add untag hacks to inet_release function"
This reverts commit f2ad6ade.

Revert "ANDROID: netfilter: xt_qtaguid: don't check if embedded arrays are NULL"
This reverts commit 65a7a5ee.

Revert "ANDROID: netfilter: xt_qtaguid: fix the deadlock when enable DDEBUG"
This reverts commit 8ccc999c.

Revert "ANDROID: netfilter: xt_qtaguid: Don't show empty tag stats for unprivileged uids"
This reverts commit 6cdbac6f.

Revert "ANDROID: netfilter: xt_qtaguid: Fix panic caused by processing non-full socket."
This reverts commit f20252d7.

Revert "ANDROID: netfilter: xt_qtaguid: Fix panic caused by synack processing"
This reverts commit af798507.

Revert "ANDROID: netfilter: xt_qtaguid: fix a race condition in if_tag_stat_update"
This reverts commit ca58d224.

Revert "ANDROID: netfilter: xt_qtaguid: xt_socket: build fixes"
This reverts commit 5dfb5c0e.

Revert "ANDROID: netfilter: xt_qtaguid: Use sk_callback_lock read locks before reading sk->sk_socket"
This reverts commit 06ac276e.

Revert "ANDROID: netfilter: xt_qtaguid/xt_socket: Build fixups"
This reverts commit 9b19736f.

Revert "ANDROID: netfilter: xt_qtaguid: Fix boot panic"
This reverts commit 6fc67945.

Revert "ANDROID: netfilter: xt_qtaguid: fix bad tcp_time_wait sock handling"
This reverts commit a89db3e4.

Revert "ANDROID: netfilter: xt_qtaguid: 3.10 fixes"
This reverts commit 1474b38f.

Revert "ANDROID: netfilter: xt_qtaguid: rate limit some of the printks"
This reverts commit bc1e31b8.

Revert "ANDROID: netfilter: xt_qtaguid: Allow tracking loopback"
This reverts commit 11a32dfd.

Revert "ANDROID: netfilter: xt_qtaguid: extend iface stat to report protocols"
This reverts commit 2170698b.

Revert "ANDROID: netfilter: xt_qtaguid: remove AID_* dependency for access control"
This reverts commit 5fecf3b1.

Revert "ANDROID: netfilter: xt_qtaguid: Don't BUG_ON if create_if_tag_stat fails"
This reverts commit 61a97f20.

Revert "ANDROID: netfilter: xt_qtaguid: fix error exit that would keep a spinlock."
This reverts commit 260b6645.

Revert "ANDROID: netfilter: xt_qtaguid: report only uid tags to non-privileged processes"
This reverts commit 22ecb1cb.

Revert "ANDROID: netfilter: xt_qtaguid: start tracking iface rx/tx at low level"
This reverts commit a2d25419.

Revert "ANDROID: netfilter: xt_qtaguid: fix ipv6 protocol lookup"
This reverts commit 588f1e1d.

Revert "ANDROID: netfilter: xt_qtaguid: add qtaguid matching module"
This reverts commit 00f57e8b.

Based on:
  athina:/git/AND-B5R3 ((0a5c1622fe85...))$ git log --oneline --no-merges remotes/android/kernel/common/android-4.19-q..HEAD | egrep qtaguid
  441e17f7 ANDROID: xt_qtaguid: Remove unnecessary null checks to device's name
  b4d74821 ANDROID: qtaguid: Fix the UAF probelm with tag_ref_tree
  2f6e1d62 ANDROID: netfilter: xt_qtaguid: Fix 4.14 compilation
  10937966 ANDROID: netfilter: xt_qtaguid: Use sk_uid to replace uid get from socket file
  972ca00d ANDROID: netfilter: xt_qtaguid: fix handling for cases where tunnels are used.
  5824b89f ANDROID: netfilter: xt_qtaguid: handle properly request sockets
  f2ad6ade ANDROID: netfilter: xt_qtaguid: Add untag hacks to inet_release function
  65a7a5ee ANDROID: netfilter: xt_qtaguid: don't check if embedded arrays are NULL
  8ccc999c ANDROID: netfilter: xt_qtaguid: fix the deadlock when enable DDEBUG
  6cdbac6f ANDROID: netfilter: xt_qtaguid: Don't show empty tag stats for unprivileged uids
  f20252d7 ANDROID: netfilter: xt_qtaguid: Fix panic caused by processing non-full socket.
  af798507 ANDROID: netfilter: xt_qtaguid: Fix panic caused by synack processing
  ca58d224 ANDROID: netfilter: xt_qtaguid: fix a race condition in if_tag_stat_update
  5dfb5c0e ANDROID: netfilter: xt_qtaguid: xt_socket: build fixes
  06ac276e ANDROID: netfilter: xt_qtaguid: Use sk_callback_lock read locks before reading sk->sk_socket
  9b19736f ANDROID: netfilter: xt_qtaguid/xt_socket: Build fixups
  6fc67945 ANDROID: netfilter: xt_qtaguid: Fix boot panic
  a89db3e4 ANDROID: netfilter: xt_qtaguid: fix bad tcp_time_wait sock handling
  1474b38f ANDROID: netfilter: xt_qtaguid: 3.10 fixes
  bc1e31b8 ANDROID: netfilter: xt_qtaguid: rate limit some of the printks
  11a32dfd ANDROID: netfilter: xt_qtaguid: Allow tracking loopback
  2170698b ANDROID: netfilter: xt_qtaguid: extend iface stat to report protocols
  5fecf3b1 ANDROID: netfilter: xt_qtaguid: remove AID_* dependency for access control
  61a97f20 ANDROID: netfilter: xt_qtaguid: Don't BUG_ON if create_if_tag_stat fails
  260b6645 ANDROID: netfilter: xt_qtaguid: fix error exit that would keep a spinlock.
  22ecb1cb ANDROID: netfilter: xt_qtaguid: report only uid tags to non-privileged processes
  a2d25419 ANDROID: netfilter: xt_qtaguid: start tracking iface rx/tx at low level
  588f1e1d ANDROID: netfilter: xt_qtaguid: fix ipv6 protocol lookup
  00f57e8b ANDROID: netfilter: xt_qtaguid: add qtaguid matching module

Generated via:
  git log --oneline --no-merges remotes/android/kernel/common/android-4.19-q..HEAD \
  | egrep qtaguid | while read a b; do git revert $a; done
and squashing the result.

Test:
  $ git grep -i qtaguid
  arch/arm/configs/ranchu_defconfig:108:CONFIG_NETFILTER_XT_MATCH_QTAGUID=y
  arch/arm64/configs/ranchu64_defconfig:110:CONFIG_NETFILTER_XT_MATCH_QTAGUID=y
  arch/x86/configs/i386_ranchu_defconfig:142:CONFIG_NETFILTER_XT_MATCH_QTAGUID=y
  arch/x86/configs/x86_64_ranchu_defconfig:140:CONFIG_NETFILTER_XT_MATCH_QTAGUID=y

Bug: 138428914
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ida83e0ba51c5debbc509f99b35d6013be01ddedf