Same as ip_vti, use iptunnel_xmit_stats to updates stats in tunnel xmit
code path.
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann says:
====================
pull-request: bpf 2018-08-18
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) Fix a BPF selftest failure in test_cgroup_storage due to rlimit
restrictions, from Yonghong.
2) Fix a suspicious RCU rcu_dereference_check() warning triggered
from removing a device's XDP memory allocator by using the correct
rhashtable lookup function, from Tariq.
3) A batch of BPF sockmap and ULP fixes mainly fixing leaks and races
as well as enforcing module aliases for ULPs. Another fix for BPF
map redirect to make them work again with tail calls, from Daniel.
4) Fix XDP BPF samples to unload their programs upon SIGTERM, from Jesper.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
Netfilter/IPVS fixes for net
The following patchset contains Netfilter/IPVS fixes for your net tree:
1) Infinite loop in IPVS when net namespace is released, from
Tan Hu.
2) Do not show negative timeouts in ip_vs_conn by using the new
jiffies_delta_to_msecs(), patches from Matteo Croce.
3) Set F_IFACE flag for linklocal addresses in ip6t_rpfilter,
from Florian Westphal.
4) Fix overflow in set size allocation, from Taehee Yoo.
5) Use netlink_dump_start() from ctnetlink to fix memleak from
the error path, again from Florian.
6) Register nfnetlink_subsys in last place, otherwise netns
init path may lose race and see net->nft uninitialized data.
This also reverts previous attempt to fix this by increase
netns refcount, patches from Florian.
7) Remove conntrack entries on layer 4 protocol tracker module
removal, from Florian.
8) Use GFP_KERNEL_ACCOUNT for xtables blob allocation, from
Michal Hocko.
9) Get tproxy documentation in sync with existing codebase,
from Mate Eckl.
10) Honor preset layer 3 protocol via ctx->family in the new nft_ct
timeout infrastructure, from Harsha Sharma.
11) Let uapi nfnetlink_osf.h compile standalone with no errors,
from Dmitry V. Levin.
12) Missing braces compilation warning in nft_tproxy, patch from
Mate Eclk.
13) Disregard bogus check to bail out on non-anonymous sets from
the dynamic set update extension.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Commits 109980b894 ("bpf: don't select potentially stale ri->map
from buggy xdp progs") and 7c30013133 ("bpf: fix ri->map_owner
pointer on bpf_prog_realloc") tried to mitigate that buggy programs
using bpf_redirect_map() helper call do not leave stale maps behind.
Idea was to add a map_owner cookie into the per CPU struct redirect_info
which was set to prog->aux by the prog making the helper call as a
proof that the map is not stale since the prog is implicitly holding
a reference to it. This owner cookie could later on get compared with
the program calling into BPF whether they match and therefore the
redirect could proceed with processing the map safely.
In (obvious) hindsight, this approach breaks down when tail calls are
involved since the original caller's prog->aux pointer does not have
to match the one from one of the progs out of the tail call chain,
and therefore the xdp buffer will be dropped instead of redirected.
A way around that would be to fix the issue differently (which also
allows to remove related work in fast path at the same time): once
the life-time of a redirect map has come to its end we use it's map
free callback where we need to wait on synchronize_rcu() for current
outstanding xdp buffers and remove such a map pointer from the
redirect info if found to be present. At that time no program is
using this map anymore so we simply invalidate the map pointers to
NULL iff they previously pointed to that instance while making sure
that the redirect path only reads out the map once.
Fixes: 97f91a7cf0 ("bpf: add bpf_redirect_map helper routine")
Fixes: 109980b894 ("bpf: don't select potentially stale ri->map from buggy xdp progs")
Reported-by: Sebastiano Miano <sebastiano.miano@polito.it>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Now that we switched the r8169 driver to use phylib, there's a
dependency on the Realtek PHY drivers. This dependency was missing
in Kconfig.
Reported-by: Jouni Mettälä <jtmettala@gmail.com>
Fixes: f1e911d5d0 ("r8169: add basic phylib support")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The bpf selftest test_cgroup_storage failed in one of
our production test servers.
# sudo ./test_cgroup_storage
Failed to create map: Operation not permitted
It turns out this is due to insufficient locked memory
with system default 16KB.
Similar to other self tests, let us arm the process
with unlimited locked memory. With this change,
the test passed.
# sudo ./test_cgroup_storage
test_cgroup_storage:PASS
Fixes: 68cfa3ac6b ("selftests/bpf: add a cgroup storage test")
Cc: Roman Gushchin <guro@fb.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Daniel Borkmann says:
====================
Batch of various fixes related to BPF sockmap and ULP, including
adding module alias to restrict module requests, races and memory
leaks in sockmap code. For details please refer to the individual
patches. Thanks!
====================
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
The current code in sock_map_ctx_update_elem() allows for BPF_EXIST
and BPF_NOEXIST map update flags. While on array-like maps this approach
is rather uncommon, e.g. bpf_fd_array_map_update_elem() and others
enforce map update flags to be BPF_ANY such that xchg() can be used
directly, the current implementation in sock map does not guarantee
that such operation with BPF_EXIST / BPF_NOEXIST is atomic.
The initial test does a READ_ONCE(stab->sock_map[i]) to fetch the
socket from the slot which is then tested for NULL / non-NULL. However
later after __sock_map_ctx_update_elem(), the actual update is done
through osock = xchg(&stab->sock_map[i], sock). Problem is that in
the meantime a different CPU could have updated / deleted a socket
on that specific slot and thus flag contraints won't hold anymore.
I've been thinking whether best would be to just break UAPI and do
an enforcement of BPF_ANY to check if someone actually complains,
however trouble is that already in BPF kselftest we use BPF_NOEXIST
for the map update, and therefore it might have been copied into
applications already. The fix to keep the current behavior intact
would be to add a map lock similar to the sock hash bucket lock only
for covering the whole map.
Fixes: 174a79ff95 ("bpf: sockmap with sk redirect support")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
The smap_start_sock() and smap_stop_sock() are each protected under
the sock->sk_callback_lock from their call-sites except in the case
of sock_map_delete_elem() where we drop the old socket from the map
slot. This is racy because the same sock could be part of multiple
sock maps, so we run smap_stop_sock() in parallel, and given at that
point psock->strp_enabled might be true on both CPUs, we might for
example wrongly restore the sk->sk_data_ready / sk->sk_write_space.
Therefore, hold the sock->sk_callback_lock as well on delete. Looks
like 2f857d0460 ("bpf: sockmap, remove STRPARSER map_flags and add
multi-map support") had this right, but later on e9db4ef6bf ("bpf:
sockhash fix omitted bucket lock in sock_close") removed it again
from delete leaving this smap_stop_sock() instance unprotected.
Fixes: e9db4ef6bf ("bpf: sockhash fix omitted bucket lock in sock_close")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
While working on sockmap I noticed that we do not always kfree the
struct smap_psock_map_entry list elements which track psocks attached
to maps. In the case of sock_hash_ctx_update_elem(), these map entries
are allocated outside of __sock_map_ctx_update_elem() with their
linkage to the socket hash table filled. In the case of sock array,
the map entries are allocated inside of __sock_map_ctx_update_elem()
and added with their linkage to the psock->maps. Both additions are
under psock->maps_lock each.
Now, we drop these elements from their psock->maps list in a few
occasions: i) in sock array via smap_list_map_remove() when an entry
is either deleted from the map from user space, or updated via
user space or BPF program where we drop the old socket at that map
slot, or the sock array is freed via sock_map_free() and drops all
its elements; ii) for sock hash via smap_list_hash_remove() in exactly
the same occasions as just described for sock array; iii) in the
bpf_tcp_close() where we remove the elements from the list via
psock_map_pop() and iterate over them dropping themselves from either
sock array or sock hash; and last but not least iv) once again in
smap_gc_work() which is a callback for deferring the work once the
psock refcount hit zero and thus the socket is being destroyed.
Problem is that the only case where we kfree() the list entry is
in case iv), which at that point should have an empty list in
normal cases. So in cases from i) to iii) we unlink the elements
without freeing where they go out of reach from us. Hence fix is
to properly kfree() them as well to stop the leakage. Given these
are all handled under psock->maps_lock there is no need for deferred
RCU freeing.
I later also ran with kmemleak detector and it confirmed the finding
as well where in the state before the fix the object goes unreferenced
while after the patch no kmemleak report related to BPF showed up.
[...]
unreferenced object 0xffff880378eadae0 (size 64):
comm "test_sockmap", pid 2225, jiffies 4294720701 (age 43.504s)
hex dump (first 32 bytes):
00 01 00 00 00 00 ad de 00 02 00 00 00 00 ad de ................
50 4d 75 5d 03 88 ff ff 00 00 00 00 00 00 00 00 PMu]............
backtrace:
[<000000005225ac3c>] sock_map_ctx_update_elem.isra.21+0xd8/0x210
[<0000000045dd6d3c>] bpf_sock_map_update+0x29/0x60
[<00000000877723aa>] ___bpf_prog_run+0x1e1f/0x4960
[<000000002ef89e83>] 0xffffffffffffffff
unreferenced object 0xffff880378ead240 (size 64):
comm "test_sockmap", pid 2225, jiffies 4294720701 (age 43.504s)
hex dump (first 32 bytes):
00 01 00 00 00 00 ad de 00 02 00 00 00 00 ad de ................
00 44 75 5d 03 88 ff ff 00 00 00 00 00 00 00 00 .Du]............
backtrace:
[<000000005225ac3c>] sock_map_ctx_update_elem.isra.21+0xd8/0x210
[<0000000030e37a3a>] sock_map_update_elem+0x125/0x240
[<000000002e5ce36e>] map_update_elem+0x4eb/0x7b0
[<00000000db453cc9>] __x64_sys_bpf+0x1f9/0x360
[<0000000000763660>] do_syscall_64+0x9a/0x300
[<00000000422a2bb2>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[<000000002ef89e83>] 0xffffffffffffffff
[...]
Fixes: e9db4ef6bf ("bpf: sockhash fix omitted bucket lock in sock_close")
Fixes: 54fedb42c6 ("bpf: sockmap, fix smap_list_map_remove when psock is in many maps")
Fixes: 2f857d0460 ("bpf: sockmap, remove STRPARSER map_flags and add multi-map support")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
I found that in BPF sockmap programs once we either delete a socket
from the map or we updated a map slot and the old socket was purged
from the map that these socket can never get reattached into a map
even though their related psock has been dropped entirely at that
point.
Reason is that tcp_cleanup_ulp() leaves the old icsk->icsk_ulp_ops
intact, so that on the next tcp_set_ulp_id() the kernel returns an
-EEXIST thinking there is still some active ULP attached.
BPF sockmap is the only one that has this issue as the other user,
kTLS, only calls tcp_cleanup_ulp() from tcp_v4_destroy_sock() whereas
sockmap semantics allow dropping the socket from the map with all
related psock state being cleaned up.
Fixes: 1aa12bdf1b ("bpf: sockmap, add sock close() hook to remove socks")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Lets not turn the TCP ULP lookup into an arbitrary module loader as
we only intend to load ULP modules through this mechanism, not other
unrelated kernel modules:
[root@bar]# cat foo.c
#include <sys/types.h>
#include <sys/socket.h>
#include <linux/tcp.h>
#include <linux/in.h>
int main(void)
{
int sock = socket(PF_INET, SOCK_STREAM, 0);
setsockopt(sock, IPPROTO_TCP, TCP_ULP, "sctp", sizeof("sctp"));
return 0;
}
[root@bar]# gcc foo.c -O2 -Wall
[root@bar]# lsmod | grep sctp
[root@bar]# ./a.out
[root@bar]# lsmod | grep sctp
sctp 1077248 4
libcrc32c 16384 3 nf_conntrack,nf_nat,sctp
[root@bar]#
Fix it by adding module alias to TCP ULP modules, so probing module
via request_module() will be limited to tcp-ulp-[name]. The existing
modules like kTLS will load fine given tcp-ulp-tls alias, but others
will fail to load:
[root@bar]# lsmod | grep sctp
[root@bar]# ./a.out
[root@bar]# lsmod | grep sctp
[root@bar]#
Sockmap is not affected from this since it's either built-in or not.
Fixes: 734942cc4e ("tcp: ULP infrastructure")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Commit 394e40a297 ("bpf: extend bpf_prog_array to store pointers
to the cgroup storage") refactored the bpf_prog_array_copy_core()
to accommodate new structure bpf_prog_array_item which contains
bpf_prog array itself.
In the old code, we had
perf_event_query_prog_array():
mutex_lock(...)
bpf_prog_array_copy_call():
prog = rcu_dereference_check(array, 1)->progs
bpf_prog_array_copy_core(prog, ...)
mutex_unlock(...)
With the above commit, we had
perf_event_query_prog_array():
mutex_lock(...)
bpf_prog_array_copy_call():
bpf_prog_array_copy_core(array, ...):
item = rcu_dereference(array)->items;
...
mutex_unlock(...)
The new code will trigger a lockdep rcu checking warning.
The fix is to change rcu_dereference() to rcu_dereference_check()
to prevent such a warning.
Reported-by: syzbot+6e72317008eef84a216b@syzkaller.appspotmail.com
Fixes: 394e40a297 ("bpf: extend bpf_prog_array to store pointers to the cgroup storage")
Cc: Roman Gushchin <guro@fb.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
It is common XDP practice to unload/deattach the XDP bpf program,
when the XDP sample program is Ctrl-C interrupted (SIGINT) or
killed (SIGTERM).
The samples/bpf programs xdp_redirect_cpu and xdp_rxq_info,
forgot to trap signal SIGTERM (which is the default signal used
by the kill command).
This was discovered by Red Hat QA, which automated scripts depend
on killing the XDP sample program after a timeout period.
Fixes: fad3917e36 ("samples/bpf: add cpumap sample program xdp_redirect_cpu")
Fixes: 0fca931a6f ("samples/bpf: program demonstrating access to xdp_rxq_info")
Reported-by: Jean-Tsung Hsiao <jhsiao@redhat.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
priv argument is not used by the function, delete it.
Fixes: a89842811e ("net/mlx5e: Merge per priority stats groups")
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If set cbs parameters calculated for 1000Mb, but use on 100Mb port
w/o h/w offload (for cpsw offload it doesn't matter), it works
incorrectly. According to the example and testing board, second port
is 100Mb interface. Correct them on recalculated for 100Mb interface.
It allows to use the same command for CBS software implementation for
board in example.
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
It was possible to directly leak the kernel address where the isdn_dev
structure pointer was stored. This is a kernel ASLR bypass for anyone
with access to the ioctl. The code had been present since the beginning
of git history, though this shouldn't ever be needed for normal operation,
therefore remove it.
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
ksz9477 is superset of ksz9xx series, driver just works
out of the box for ksz9897 chip with this patch.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Previously, alloc_ila_locks() and bucket_table_alloc() call
spin_lock_init() separately, therefore they have two different
lock names and lock class keys. However, after commit b893281715
("ila: Call library function alloc_bucket_locks") they both call
helper alloc_bucket_spinlocks() which now only has one lock
name and lock class key. This causes a few bogus lockdep warnings
as reported by syzbot.
Fix this by making alloc_bucket_locks() a macro and pass declaration
name as lock name and a static lock class key inside the macro.
Fixes: b893281715 ("ila: Call library function alloc_bucket_locks")
Reported-by: <syzbot+b66a5a554991a8ed027c@syzkaller.appspotmail.com>
Cc: Tom Herbert <tom@quantonium.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Action init API was changed to always take reference to action, even when
overwriting existing action. Substitute conditional action release, which
was executed only if action is newly created, with unconditional release in
tcf_ife_init() error handling code to prevent double free or memory leak in
case of overwrite.
Fixes: 4e8ddd7f17 ("net: sched: don't release reference on action overwrite")
Reported-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Document RZ/G2M (R8A774A1) SoC bindings.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix tcf_unbind_filter missing in cls_matchall as this will trigger
WARN_ON() in cbq_destroy_class().
Fixes: fd62d9f5c5 ("net/sched: matchall: Fix configuration race")
Reported-by: Li Shuang <shuali@redhat.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes a warning reported by the kbuild test robot (from linux-next
tree):
net/netfilter/nft_tproxy.c: In function 'nft_tproxy_eval_v6':
>> net/netfilter/nft_tproxy.c:85:9: warning: missing braces around initializer [-Wmissing-braces]
struct in6_addr taddr = {0};
^
net/netfilter/nft_tproxy.c:85:9: warning: (near initialization for 'taddr.in6_u') [-Wmissing-braces]
This warning is actually caused by a gcc bug already resolved in newer
versions (kbuild used 4.9) so this kind of initialization is omitted and
memset is used instead.
Fixes: 4ed8eb6570 ("netfilter: nf_tables: Add native tproxy support")
Signed-off-by: Máté Eckl <ecklm94@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Move inclusion of <linux/ip.h> and <linux/tcp.h> from
linux/netfilter/xt_osf.h to linux/netfilter/nf_osf.h to fix
the following linux/netfilter/nf_osf.h userspace compilation errors:
/usr/include/linux/netfilter/nf_osf.h:59:24: error: 'MAX_IPOPTLEN' undeclared here (not in a function)
struct nf_osf_opt opt[MAX_IPOPTLEN];
/usr/include/linux/netfilter/nf_osf.h:64:17: error: field 'ip' has incomplete type
struct iphdr ip;
/usr/include/linux/netfilter/nf_osf.h:65:18: error: field 'tcp' has incomplete type
struct tcphdr tcp;
Fixes: bfb15f2a95 ("netfilter: extract Passive OS fingerprint infrastructure from xt_osf")
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
If l3 protocol value is not specified for ct timeout object then use the
value from nft_ctx protocol family.
Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Recently, transparent proxy support has been added to nf_tables so that
this document should be updated with the new information.
- Nft commands are added as alternatives to iptables ones.
- The link for a patched iptables is removed as it is already part of
the mainline iptables implementation (and the link is dead).
- tcprdr is added as an example implementation of a transparent proxy
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Florian Westphal <fw@strlen.de>
Cc: KOVACS Krisztian <hidden@sch.bme.hu>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Máté Eckl <ecklm94@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
eacd86ca3b ("net/netfilter/x_tables.c: use kvmalloc()
in xt_alloc_table_info()") has unintentionally fortified
xt_alloc_table_info allocation when __GFP_RETRY has been dropped from
the vmalloc fallback. Later on there was a syzbot report that this
can lead to OOM killer invocations when tables are too large and
0537250fdc ("netfilter: x_tables: make allocation less aggressive")
has been merged to restore the original behavior. Georgi Nikolov however
noticed that he is not able to install his iptables anymore so this can
be seen as a regression.
The primary argument for 0537250fdc was that this allocation path
shouldn't really trigger the OOM killer and kill innocent tasks. On the
other hand the interface requires root and as such should allow what the
admin asks for. Root inside a namespaces makes this more complicated
because those might be not trusted in general. If they are not then such
namespaces should be restricted anyway. Therefore drop the __GFP_NORETRY
and replace it by __GFP_ACCOUNT to enfore memcg constrains on it.
Fixes: 0537250fdc ("netfilter: x_tables: make allocation less aggressive")
Reported-by: Georgi Nikolov <gnikolov@icdsoft.com>
Suggested-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
nf_ct_l4proto_unregister_one() leaves conntracks added by
to-be-removed tracker behind, nf_ct_l4proto_unregister has to iterate
for each protocol to be removed.
v2: call nf_ct_iterate_destroy without holding nf_ct_proto_mutex.
Fixes: 2c41f33c1b ("netfilter: move table iteration out of netns exit paths")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
When a netnsamespace exits, the nf_tables pernet_ops will remove all rules.
However, there is one caveat:
Base chains that register ingress hooks will cause use-after-free:
device is already gone at that point.
The device event handlers prevent this from happening:
netns exit synthesizes unregister events for all devices.
However, an improper fix for a race condition made the notifiers a no-op
in case they get called from netns exit path, so revert that part.
This is safe now as the previous patch fixed nf_tables pernet ops
and device notifier initialisation ordering.
Fixes: 0a2cf5ee43 ("netfilter: nf_tables: close race between netns exit and rmmod")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
We must register nfnetlink ops last, as that exposes nf_tables to
userspace. Without this, we could theoretically get nfnetlink request
before net->nft state has been initialized.
Fixes: 99633ab29b ("netfilter: nf_tables: complete net namespace support")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Shaochun Chen points out we leak dumper filter state allocations
stored in dump_control->data in case there is an error before netlink sets
cb_running (after which ->done will be called at some point).
In order to fix this, add .start functions and move allocations there.
Same pattern as used in commit 90fd131afc
("netfilter: nf_tables: move dumper state allocation into ->start").
Reported-by: shaochun chen <cscnull@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Roman reports that DHCPv6 client no longer sees replies from server
due to
ip6tables -t raw -A PREROUTING -m rpfilter --invert -j DROP
rule. We need to set the F_IFACE flag for linklocal addresses, they
are scoped per-device.
Fixes: 47b7e7f828 ("netfilter: don't set F_IFACE on ipv6 fib lookups")
Reported-by: Roman Mamedov <rm@romanrm.net>
Tested-by: Roman Mamedov <rm@romanrm.net>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Since commit 500462a9de ("timers: Switch to a non-cascading wheel"),
timers duration can last even 12.5% more than the scheduled interval.
IPVS has two handlers, /proc/net/ip_vs_conn and /proc/net/ip_vs_conn_sync,
which shows the remaining time before that a connection expires.
The default expire time for a connection is 60 seconds, and the
expiration timer can fire even 4 seconds later than the scheduled time.
The expiration time is calculated subtracting jiffies to the scheduled
expiration time, and it's shown as a huge number when the timer fires late,
since both values are unsigned.
This can confuse script and tools which relies on it, like ipvsadm:
root@mcroce-redhat:~# while ipvsadm -lc |grep SYN_RECV; do sleep 1 ; done
TCP 00:05 SYN_RECV [fc00:1::1]:55732 [fc00:1::2]:8000 [fc00:2000::1]:8000
TCP 00:04 SYN_RECV [fc00:1::1]:55732 [fc00:1::2]:8000 [fc00:2000::1]:8000
TCP 00:03 SYN_RECV [fc00:1::1]:55732 [fc00:1::2]:8000 [fc00:2000::1]:8000
TCP 00:02 SYN_RECV [fc00:1::1]:55732 [fc00:1::2]:8000 [fc00:2000::1]:8000
TCP 00:01 SYN_RECV [fc00:1::1]:55732 [fc00:1::2]:8000 [fc00:2000::1]:8000
TCP 00:00 SYN_RECV [fc00:1::1]:55732 [fc00:1::2]:8000 [fc00:2000::1]:8000
TCP 68719476:44 SYN_RECV [fc00:1::1]:55732 [fc00:1::2]:8000 [fc00:2000::1]:8000
TCP 68719476:43 SYN_RECV [fc00:1::1]:55732 [fc00:1::2]:8000 [fc00:2000::1]:8000
TCP 68719476:42 SYN_RECV [fc00:1::1]:55732 [fc00:1::2]:8000 [fc00:2000::1]:8000
TCP 68719476:41 SYN_RECV [fc00:1::1]:55732 [fc00:1::2]:8000 [fc00:2000::1]:8000
TCP 68719476:40 SYN_RECV [fc00:1::1]:55732 [fc00:1::2]:8000 [fc00:2000::1]:8000
TCP 68719476:39 SYN_RECV [fc00:1::1]:55732 [fc00:1::2]:8000 [fc00:2000::1]:8000
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
add jiffies_delta_to_msecs() helper func to calculate the delta between
two times and eventually 0 if negative.
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
We came across infinite loop in ipvs when using ipvs in docker
env.
When ipvs receives new packets and cannot find an ipvs connection,
it will create a new connection, then if the dest is unavailable
(i.e. IP_VS_DEST_F_AVAILABLE), the packet will be dropped sliently.
But if the dropped packet is the first packet of this connection,
the connection control timer never has a chance to start and the
ipvs connection cannot be released. This will lead to memory leak, or
infinite loop in cleanup_net() when net namespace is released like
this:
ip_vs_conn_net_cleanup at ffffffffa0a9f31a [ip_vs]
__ip_vs_cleanup at ffffffffa0a9f60a [ip_vs]
ops_exit_list at ffffffff81567a49
cleanup_net at ffffffff81568b40
process_one_work at ffffffff810a851b
worker_thread at ffffffff810a9356
kthread at ffffffff810b0b6f
ret_from_fork at ffffffff81697a18
race condition:
CPU1 CPU2
ip_vs_in()
ip_vs_conn_new()
ip_vs_del_dest()
__ip_vs_unlink_dest()
~IP_VS_DEST_F_AVAILABLE
cp->dest && !IP_VS_DEST_F_AVAILABLE
__ip_vs_conn_put
...
cleanup_net ---> infinite looping
Fix this by checking whether the timer already started.
Signed-off-by: Tan Hu <tan.hu@zte.com.cn>
Reviewed-by: Jiang Biao <jiang.biao2@zte.com.cn>
Acked-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pull thermal management updates from Eduardo Valentin:
- rework tsens driver to add support for tsens-v2 (Amit Kucheria)
- rework armada thermal driver to use syscon and multichannel support
(Miquel Raynal)
- fixes to TI SoC, IMX, Exynos, RCar, and hwmon drivers
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal: (34 commits)
thermal: armada: fix copy-paste error in armada_thermal_probe()
thermal: rcar_thermal: avoid NULL dereference in absence of IRQ resources
thermal: samsung: Remove Exynos5440 clock handling left-overs
thermal: tsens: Fix negative temperature reporting
thermal: tsens: switch from of_iomap() to devm_ioremap_resource()
thermal: tsens: Rename variable
thermal: tsens: Add generic support for TSENS v2 IP
thermal: tsens: Rename tsens-8996 to tsens-v2 for reuse
thermal: tsens: Add support to split up register address space into two
dt: thermal: tsens: Document the fallback DT property for v2 of TSENS IP
thermal: tsens: Get rid of unused fields in structure
thermal_hwmon: Pass the originating device down to hwmon_device_register_with_info
thermal_hwmon: Sanitize attribute name passed to hwmon
dt-bindings: thermal: armada: add reference to new bindings
dt-bindings: cp110: add the thermal node in the syscon file
dt-bindings: cp110: update documentation since DT de-duplication
dt-bindings: ap806: add the thermal node in the syscon file
dt-bindings: cp110: prepare the syscon file to list other syscons nodes
dt-bindings: ap806: prepare the syscon file to list other syscons nodes
dt-bindings: cp110: rename cp110 syscon file
...
- omap : switch to spdx license and use of_device_get_match_data() to match data
- ti-msgmgr : cleanup and optimisation. New TI specific feature - secure proxy thread.
- mediatek : add driver for CMDQ controller.
- nxp : add driver for MU controller
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Merge tag 'mailbox-v4.19' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox updates from Jassi Brar:
- xgene: potential null pointer fix
- omap: switch to spdx license and use of_device_get_match_data() to
match data
- ti-msgmgr: cleanup and optimisation. New TI specific feature - secure
proxy thread.
- mediatek: add driver for CMDQ controller.
- nxp: add driver for MU controller
* tag 'mailbox-v4.19' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
mailbox: Add support for i.MX messaging unit
dt-bindings: mailbox: imx-mu: add generic MU channel support
dt-bindings: arm: fsl: add mu binding doc
mailbox: add MODULE_LICENSE() for mtk-cmdq-mailbox.c
mailbox: mediatek: Add Mediatek CMDQ driver
dt-bindings: soc: Add documentation for the MediaTek GCE unit
mailbox: ti-msgmgr: Add support for Secure Proxy
dt-bindings: mailbox: Add support for secure proxy threads
mailbox: ti-msgmgr: Move the memory region name to descriptor
mailbox: ti-msgmgr: Change message count mask to be descriptor based
mailbox: ti-msgmgr: Allocate Rx channel resources only on request
mailbox: ti-msgmgr: Get rid of unused structure members
mailbox/omap: use of_device_get_match_data() to get match data
mailbox/omap: switch to SPDX license identifier
mailbox: xgene-slimpro: Fix potential NULL pointer dereference
The split of .system_keyring into .builtin_trusted_keys and
.secondary_trusted_keys broke kexec, thereby preventing kernels signed by
keys which are now in the secondary keyring from being kexec'd.
Fix this by passing VERIFY_USE_SECONDARY_KEYRING to
verify_pefile_signature().
Fixes: d3bfe84129 ("certs: Add a secondary system keyring that can be added to dynamically")
Signed-off-by: Yannik Sembritzki <yannik@sembritzki.me>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: kexec@lists.infradead.org
Cc: keyrings@vger.kernel.org
Cc: linux-security-module@vger.kernel.org
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Replace the use of a magic number that indicates that verify_*_signature()
should use the secondary keyring with a symbol.
Signed-off-by: Yannik Sembritzki <yannik@sembritzki.me>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: keyrings@vger.kernel.org
Cc: linux-security-module@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Merge tag 'pci-v4.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci updates from Bjorn Helgaas:
- Decode AER errors with names similar to "lspci" (Tyler Baicar)
- Expose AER statistics in sysfs (Rajat Jain)
- Clear AER status bits selectively based on the type of recovery (Oza
Pawandeep)
- Honor "pcie_ports=native" even if HEST sets FIRMWARE_FIRST (Alexandru
Gagniuc)
- Don't clear AER status bits if we're using the "Firmware-First"
strategy where firmware owns the registers (Alexandru Gagniuc)
- Use sysfs_match_string() to simplify ASPM sysfs parsing (Andy
Shevchenko)
- Remove unnecessary includes of <linux/pci-aspm.h> (Bjorn Helgaas)
- Defer DPC event handling to work queue (Keith Busch)
- Use threaded IRQ for DPC bottom half (Keith Busch)
- Print AER status while handling DPC events (Keith Busch)
- Work around IDT switch ACS Source Validation erratum (James
Puthukattukaran)
- Emit diagnostics for all cases of PCIe Link downtraining (Links
operating slower than they're capable of) (Alexandru Gagniuc)
- Skip VFs when configuring Max Payload Size (Myron Stowe)
- Reduce Root Port Max Payload Size if necessary when hot-adding a
device below it (Myron Stowe)
- Simplify SHPC existence/permission checks (Bjorn Helgaas)
- Remove hotplug sample skeleton driver (Lukas Wunner)
- Convert pciehp to threaded IRQ handling (Lukas Wunner)
- Improve pciehp tolerance of missed events and initially unstable
links (Lukas Wunner)
- Clear spurious pciehp events on resume (Lukas Wunner)
- Add pciehp runtime PM support, including for Thunderbolt controllers
(Lukas Wunner)
- Support interrupts from pciehp bridges in D3hot (Lukas Wunner)
- Mark fall-through switch cases before enabling -Wimplicit-fallthrough
(Gustavo A. R. Silva)
- Move DMA-debug PCI init from arch code to PCI core (Christoph
Hellwig)
- Fix pci_request_irq() usage of IRQF_ONESHOT when no handler is
supplied (Heiner Kallweit)
- Unify PCI and DMA direction #defines (Shunyong Yang)
- Add PCI_DEVICE_DATA() macro (Andy Shevchenko)
- Check for VPD completion before checking for timeout (Bert Kenward)
- Limit Netronome NFP5000 config space size to work around erratum
(Jakub Kicinski)
- Set IRQCHIP_ONESHOT_SAFE for PCI MSI irqchips (Heiner Kallweit)
- Document ACPI description of PCI host bridges (Bjorn Helgaas)
- Add "pci=disable_acs_redir=" parameter to disable ACS redirection for
peer-to-peer DMA support (we don't have the peer-to-peer support yet;
this is just one piece) (Logan Gunthorpe)
- Clean up devm_of_pci_get_host_bridge_resources() resource allocation
(Jan Kiszka)
- Fixup resizable BARs after suspend/resume (Christian König)
- Make "pci=earlydump" generic (Sinan Kaya)
- Fix ROM BAR access routines to stay in bounds and check for signature
correctly (Rex Zhu)
- Add DMA alias quirk for Microsemi Switchtec NTB (Doug Meyer)
- Expand documentation for pci_add_dma_alias() (Logan Gunthorpe)
- To avoid bus errors, enable PASID only if entire path supports
End-End TLP prefixes (Sinan Kaya)
- Unify slot and bus reset functions and remove hotplug knowledge from
callers (Sinan Kaya)
- Add Function-Level Reset quirks for Intel and Samsung NVMe devices to
fix guest reboot issues (Alex Williamson)
- Add function 1 DMA alias quirk for Marvell 88SS9183 PCIe SSD
Controller (Bjorn Helgaas)
- Remove Xilinx AXI-PCIe host bridge arch dependency (Palmer Dabbelt)
- Remove Aardvark outbound window configuration (Evan Wang)
- Fix Aardvark bridge window sizing issue (Zachary Zhang)
- Convert Aardvark to use pci_host_probe() to reduce code duplication
(Thomas Petazzoni)
- Correct the Cadence cdns_pcie_writel() signature (Alan Douglas)
- Add Cadence support for optional generic PHYs (Alan Douglas)
- Add Cadence power management ops (Alan Douglas)
- Remove redundant variable from Cadence driver (Colin Ian King)
- Add Kirin MSI support (Xiaowei Song)
- Drop unnecessary root_bus_nr setting from exynos, imx6, keystone,
armada8k, artpec6, designware-plat, histb, qcom, spear13xx (Shawn
Guo)
- Move link notification settings from DesignWare core to individual
drivers (Gustavo Pimentel)
- Add endpoint library MSI-X interfaces (Gustavo Pimentel)
- Correct signature of endpoint library IRQ interfaces (Gustavo
Pimentel)
- Add DesignWare endpoint library MSI-X callbacks (Gustavo Pimentel)
- Add endpoint library MSI-X test support (Gustavo Pimentel)
- Remove unnecessary GFP_ATOMIC from Hyper-V "new child" allocation
(Jia-Ju Bai)
- Add more devices to Broadcom PAXC quirk (Ray Jui)
- Work around corrupted Broadcom PAXC config space to enable SMMU and
GICv3 ITS (Ray Jui)
- Disable MSI parsing to work around broken Broadcom PAXC logic in some
devices (Ray Jui)
- Hide unconfigured functions to work around a Broadcom PAXC defect
(Ray Jui)
- Lower iproc log level to reduce console output during boot (Ray Jui)
- Fix mobiveil iomem/phys_addr_t type usage (Lorenzo Pieralisi)
- Fix mobiveil missing include file (Lorenzo Pieralisi)
- Add mobiveil Kconfig/Makefile support (Lorenzo Pieralisi)
- Fix mvebu I/O space remapping issues (Thomas Petazzoni)
- Use generic pci_host_bridge in mvebu instead of ARM-specific API
(Thomas Petazzoni)
- Whitelist VMD devices with fast interrupt handlers to avoid sharing
vectors with slow handlers (Keith Busch)
* tag 'pci-v4.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (153 commits)
PCI/AER: Don't clear AER bits if error handling is Firmware-First
PCI: Limit config space size for Netronome NFP5000
PCI/MSI: Set IRQCHIP_ONESHOT_SAFE for PCI-MSI irqchips
PCI/VPD: Check for VPD access completion before checking for timeout
PCI: Add PCI_DEVICE_DATA() macro to fully describe device ID entry
PCI: Match Root Port's MPS to endpoint's MPSS as necessary
PCI: Skip MPS logic for Virtual Functions (VFs)
PCI: Add function 1 DMA alias quirk for Marvell 88SS9183
PCI: Check for PCIe Link downtraining
PCI: Add ACS Redirect disable quirk for Intel Sunrise Point
PCI: Add device-specific ACS Redirect disable infrastructure
PCI: Convert device-specific ACS quirks from NULL termination to ARRAY_SIZE
PCI: Add "pci=disable_acs_redir=" parameter for peer-to-peer support
PCI: Allow specifying devices using a base bus and path of devfns
PCI: Make specifying PCI devices in kernel parameters reusable
PCI: Hide ACS quirk declarations inside PCI core
PCI: Delay after FLR of Intel DC P3700 NVMe
PCI: Disable Samsung SM961/PM961 NVMe before FLR
PCI: Export pcie_has_flr()
PCI: mvebu: Drop bogus comment above mvebu_pcie_map_registers()
...
Pull integrity updates from James Morris:
"This adds support for EVM signatures based on larger digests, contains
a new audit record AUDIT_INTEGRITY_POLICY_RULE to differentiate the
IMA policy rules from the IMA-audit messages, addresses two deadlocks
due to either loading or searching for crypto algorithms, and cleans
up the audit messages"
* 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
EVM: fix return value check in evm_write_xattrs()
integrity: prevent deadlock during digsig verification.
evm: Allow non-SHA1 digital signatures
evm: Don't deadlock if a crypto algorithm is unavailable
integrity: silence warning when CONFIG_SECURITYFS is not enabled
ima: Differentiate auditing policy rules from "audit" actions
ima: Do not audit if CONFIG_INTEGRITY_AUDIT is not set
ima: Use audit_log_format() rather than audit_log_string()
ima: Call audit_log_string() rather than logging it untrusted
Pull TPM updates from James Morris:
- Migrate away from PM runtime as explicit cmdReady/goIdle transactions
for every command is a spec requirement. PM runtime adds only a layer
of complexity on our case.
- tpm_tis drivers can now specify the hwrng quality.
- TPM 2.0 code uses now tpm_buf for constructing messages. Jarkko
thinks Tomas Winkler has done the same for TPM 1.2, and will start
digging those changes from the patchwork in the near future.
- Bug fixes and clean ups
* 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
ima: Get rid of ima_used_chip and use ima_tpm_chip != NULL instead
ima: Use tpm_default_chip() and call TPM functions with a tpm_chip
tpm: replace TPM_TRANSMIT_RAW with TPM_TRANSMIT_NESTED
tpm: Convert tpm_find_get_ops() to use tpm_default_chip()
tpm: Implement tpm_default_chip() to find a TPM chip
tpm: rename tpm_chip_find_get() to tpm_find_get_ops()
tpm: Allow tpm_tis drivers to set hwrng quality.
tpm: Return the actual size when receiving an unsupported command
tpm: separate cmd_ready/go_idle from runtime_pm
tpm/tpm_i2c_infineon: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT)
tpm_tis_spi: Pass the SPI IRQ down to the driver
tpm: migrate tpm2_get_random() to use struct tpm_buf
tpm: migrate tpm2_get_tpm_pt() to use struct tpm_buf
tpm: migrate tpm2_probe() to use struct tpm_buf
tpm: migrate tpm2_shutdown() to use struct tpm_buf
Pull smack updates from James Morris:
"Minor fixes from Piotr Sawicki"
* 'next-smack' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
Smack: Inform peer that IPv6 traffic has been blocked
Smack: Check UDP-Lite and DCCP protocols during IPv6 handling
Smack: Fix handling of IPv4 traffic received by PF_INET6 sockets
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Merge tag 'jfs-4.19' of git://github.com/kleikamp/linux-shaggy
Pull jfs update from David Kleikamp:
"Just one jfs patch for 4.19"
* tag 'jfs-4.19' of git://github.com/kleikamp/linux-shaggy:
jfs: use time64_t for otime
Changes on top of v4.18-rc1 / iomap-4.19-merge-1:
1. Iomap support for buffered writes and for direct I/O.
2. Two patches that reduce the size of struct gfs2_inode.
3. Lots of fixes and cleanups.
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Merge tag 'gfs2-4.19.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher:
- iomap support for buffered writes and for direct I/O
- two patches that reduce the size of struct gfs2_inode
- lots of fixes and cleanups
* tag 'gfs2-4.19.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: (25 commits)
gfs2: eliminate update_rgrp_lvb_unlinked
gfs2: Fix gfs2_testbit to use clone bitmaps
gfs2: Get rid of gfs2_ea_strlen
gfs2: cleanup: call gfs2_rgrp_ondisk2lvb from gfs2_rgrp_out
gfs2: Special-case rindex for gfs2_grow
GFS2: rgrp free blocks used incorrectly
gfs2: remove redundant variable 'moved'
gfs2: use iomap_readpage for blocksize == PAGE_SIZE
gfs2: Use iomap for stuffed direct I/O reads
gfs2: fallocate_chunk: Always initialize struct iomap
GFS2: Fix recovery issues for spectators
fs: gfs2: Adding new return type vm_fault_t
gfs2: using posix_acl_xattr_size instead of posix_acl_to_xattr
gfs2: Don't reject a supposedly full bitmap if we have blocks reserved
gfs2: Eliminate redundant ip->i_rgd
gfs2: Stop messing with ip->i_rgd in the rlist code
gfs2: Remove gfs2_write_{begin,end}
gfs2: iomap direct I/O support
gfs2: gfs2_extent_length cleanup
gfs2: iomap buffered write support
...
