| Commit message (Collapse) | Author | Age |
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XFRM mode parameters passed as part of the user templates
in the IP_XFRM_POLICY are never properly validated. Passing
values other than valid XFRM modes can cause stack-out-of-bounds
reads to occur later in the XFRM processing:
[ 140.535608] ================================================================
[ 140.543058] BUG: KASAN: stack-out-of-bounds in xfrm_state_find+0x17e4/0x1cc4
[ 140.550306] Read of size 4 at addr ffffffc0238a7a58 by task repro/5148
[ 140.557369]
[ 140.558927] Call trace:
[ 140.558936] dump_backtrace+0x0/0x388
[ 140.558940] show_stack+0x24/0x30
[ 140.558946] __dump_stack+0x24/0x2c
[ 140.558949] dump_stack+0x8c/0xd0
[ 140.558956] print_address_description+0x74/0x234
[ 140.558960] kasan_report+0x240/0x264
[ 140.558963] __asan_report_load4_noabort+0x2c/0x38
[ 140.558967] xfrm_state_find+0x17e4/0x1cc4
[ 140.558971] xfrm_resolve_and_create_bundle+0x40c/0x1fb8
[ 140.558975] xfrm_lookup+0x238/0x1444
[ 140.558977] xfrm_lookup_route+0x48/0x11c
[ 140.558984] ip_route_output_flow+0x88/0xc4
[ 140.558991] raw_sendmsg+0xa74/0x266c
[ 140.558996] inet_sendmsg+0x258/0x3b0
[ 140.559002] sock_sendmsg+0xbc/0xec
[ 140.559005] SyS_sendto+0x3a8/0x5a8
[ 140.559008] el0_svc_naked+0x34/0x38
[ 140.559009]
[ 140.592245] page dumped because: kasan: bad access detected
[ 140.597981] page_owner info is not active (free page?)
[ 140.603267]
[ 140.653503] ================================================================
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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Since commit 222d7dbd258d ("net: prevent dst uses after free")
skb_dst_force() might clear the dst_entry attached to the skb.
The xfrm code don't expect this to happen, so we crash with
a NULL pointer dereference in this case. Fix it by checking
skb_dst(skb) for NULL after skb_dst_force() and drop the packet
in cast the dst_entry was cleared.
Fixes: 222d7dbd258d ("net: prevent dst uses after free")
Reported-by: Tobias Hommel <netdev-list@genoetigt.de>
Reported-by: Kristian Evensen <kristian.evensen@gmail.com>
Reported-by: Wolfgang Walter <linux@stwm.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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We only support one offloaded xfrm (we do not have devices that
can handle more than one offload), so reset crypto_done in
xfrm_input() when iterating over multiple transforms in xfrm_input,
so that we can invoke the appropriate x->type->input for the
non-offloaded transforms
Fixes: d77e38e612a0 ("xfrm: Add an IPsec hardware offloading API")
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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transforms ahave been applied
A policy may have been set up with multiple transforms (e.g., ESP
and ipcomp). In this situation, the ingress IPsec processing
iterates in xfrm_input() and applies each transform in turn,
processing the nexthdr to find any additional xfrm that may apply.
This patch resets the transport header back to network header
only after the last transformation so that subsequent xfrms
can find the correct transport header.
Fixes: 7785bba299a8 ("esp: Add a software GRO codepath")
Suggested-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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After commit d6990976af7c5d8f55903bfb4289b6fb030bf754 ("vti6: fix PMTU caching
and reporting on xmit"), some too big skbs might be potentially passed down to
__xfrm6_output, causing it to fail to transmit but not free the skb, causing a
leak of skb, and consequentially a leak of dst references.
After running pmtu.sh, that shows as failure to unregister devices in a namespace:
[ 311.397671] unregister_netdevice: waiting for veth_b to become free. Usage count = 1
The fix is to call kfree_skb in case of transmit failures.
Fixes: dd767856a36e ("xfrm6: Don't call icmpv6_send on local error")
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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We don't validate the address prefix lengths in the xfrm
selector we got from userspace. This can lead to undefined
behaviour in the address matching functions if the prefix
is too big for the given address family. Fix this by checking
the prefixes and refuse SA/policy insertation when a prefix
is invalid.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: Air Icy <icytxw@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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In normal SYN processing, packets are handled without listener
lock and in RCU protected ingress path.
But syzkaller is known to be able to trick us and SYN
packets might be processed in process context, after being
queued into socket backlog.
In commit 06f877d613be ("tcp/dccp: fix other lockdep splats
accessing ireq_opt") I made a very stupid fix, that happened
to work mostly because of the regular path being RCU protected.
Really the thing protecting ireq->ireq_opt is RCU read lock,
and the pseudo request refcnt is not relevant.
This patch extends what I did in commit 449809a66c1d ("tcp/dccp:
block BH for SYN processing") by adding an extra rcu_read_{lock|unlock}
pair in the paths that might be taken when processing SYN from
socket backlog (thus possibly in process context)
Fixes: 06f877d613be ("tcp/dccp: fix other lockdep splats accessing ireq_opt")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for your net tree:
1) Skip ip_sabotage_in() for packet making into the VRF driver,
otherwise packets are dropped, from David Ahern.
2) Clang compilation warning uncovering typo in the
nft_validate_register_store() call from nft_osf, from Stefan Agner.
3) Double sizeof netlink message length calculations in ctnetlink,
from zhong jiang.
4) Missing rb_erase() on batch full in rbtree garbage collector,
from Taehee Yoo.
5) Calm down compilation warning in nf_hook(), from Florian Westphal.
6) Missing check for non-null sk in xt_socket before validating
netns procedence, from Flavio Leitner.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Only check for the network namespace if the socket is available.
Fixes: f564650106a6 ("netfilter: check if the socket netns is correct.")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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The nft_set_gc_batch_check() checks whether gc buffer is full.
If gc buffer is full, gc buffer is released by
the nft_set_gc_batch_complete() internally.
In case of rbtree, the rb_erase() should be called before calling the
nft_set_gc_batch_complete(). therefore the rb_erase() should
be called before calling the nft_set_gc_batch_check() too.
test commands:
table ip filter {
set set1 {
type ipv4_addr; flags interval, timeout;
gc-interval 10s;
timeout 1s;
elements = {
1-2,
3-4,
5-6,
...
10000-10001,
}
}
}
%nft -f test.nft
splat looks like:
[ 430.273885] kasan: GPF could be caused by NULL-ptr deref or user memory access
[ 430.282158] general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN PTI
[ 430.283116] CPU: 1 PID: 190 Comm: kworker/1:2 Tainted: G B 4.18.0+ #7
[ 430.283116] Workqueue: events_power_efficient nft_rbtree_gc [nf_tables_set]
[ 430.313559] RIP: 0010:rb_next+0x81/0x130
[ 430.313559] Code: 08 49 bd 00 00 00 00 00 fc ff df 48 bb 00 00 00 00 00 fc ff df 48 85 c0 75 05 eb 58 48 89 d4
[ 430.313559] RSP: 0018:ffff88010cdb7680 EFLAGS: 00010207
[ 430.313559] RAX: 0000000000b84854 RBX: dffffc0000000000 RCX: ffffffff83f01973
[ 430.313559] RDX: 000000000017090c RSI: 0000000000000008 RDI: 0000000000b84864
[ 430.313559] RBP: ffff8801060d4588 R08: fffffbfff09bc349 R09: fffffbfff09bc349
[ 430.313559] R10: 0000000000000001 R11: fffffbfff09bc348 R12: ffff880100f081a8
[ 430.313559] R13: dffffc0000000000 R14: ffff880100ff8688 R15: dffffc0000000000
[ 430.313559] FS: 0000000000000000(0000) GS:ffff88011b400000(0000) knlGS:0000000000000000
[ 430.313559] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 430.313559] CR2: 0000000001551008 CR3: 000000005dc16000 CR4: 00000000001006e0
[ 430.313559] Call Trace:
[ 430.313559] nft_rbtree_gc+0x112/0x5c0 [nf_tables_set]
[ 430.313559] process_one_work+0xc13/0x1ec0
[ 430.313559] ? _raw_spin_unlock_irq+0x29/0x40
[ 430.313559] ? pwq_dec_nr_in_flight+0x3c0/0x3c0
[ 430.313559] ? set_load_weight+0x270/0x270
[ 430.313559] ? __switch_to_asm+0x34/0x70
[ 430.313559] ? __switch_to_asm+0x40/0x70
[ 430.313559] ? __switch_to_asm+0x34/0x70
[ 430.313559] ? __switch_to_asm+0x34/0x70
[ 430.313559] ? __switch_to_asm+0x40/0x70
[ 430.313559] ? __switch_to_asm+0x34/0x70
[ 430.313559] ? __switch_to_asm+0x40/0x70
[ 430.313559] ? __switch_to_asm+0x34/0x70
[ 430.313559] ? __switch_to_asm+0x34/0x70
[ 430.313559] ? __switch_to_asm+0x40/0x70
[ 430.313559] ? __switch_to_asm+0x34/0x70
[ 430.313559] ? __schedule+0x6d3/0x1f50
[ 430.313559] ? find_held_lock+0x39/0x1c0
[ 430.313559] ? __sched_text_start+0x8/0x8
[ 430.313559] ? cyc2ns_read_end+0x10/0x10
[ 430.313559] ? save_trace+0x300/0x300
[ 430.313559] ? sched_clock_local+0xd4/0x140
[ 430.313559] ? find_held_lock+0x39/0x1c0
[ 430.313559] ? worker_thread+0x353/0x1120
[ 430.313559] ? worker_thread+0x353/0x1120
[ 430.313559] ? lock_contended+0xe70/0xe70
[ 430.313559] ? __lock_acquire+0x4500/0x4500
[ 430.535635] ? do_raw_spin_unlock+0xa5/0x330
[ 430.535635] ? do_raw_spin_trylock+0x101/0x1a0
[ 430.535635] ? do_raw_spin_lock+0x1f0/0x1f0
[ 430.535635] ? _raw_spin_lock_irq+0x10/0x70
[ 430.535635] worker_thread+0x15d/0x1120
[ ... ]
Fixes: 8d8540c4f5e0 ("netfilter: nft_set_rbtree: add timeout support")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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sizeof(sizeof()) is quite strange and does not seem to be what
is wanted here.
The issue is detected with the help of Coccinelle.
Fixes: 39215846740a ("netfilter: conntrack: remove nlattr_size pointer from l4proto trackers")
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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The function nft_validate_register_store requires a struct of type
struct nft_data_types. NFTA_DATA_VALUE is of type enum
nft_verdict_attributes. Pass the correct enum type.
This fixes a warning seen with Clang:
net/netfilter/nft_osf.c:52:8: warning: implicit conversion from
enumeration type 'enum nft_data_attributes' to different enumeration
type 'enum nft_data_types' [-Wenum-conversion]
NFTA_DATA_VALUE, NFT_OSF_MAXGENRELEN);
^~~~~~~~~~~~~~~
Fixes: b96af92d6eaf ("netfilter: nf_tables: implement Passive OS fingerprint module in nft_osf")
Link: https://github.com/ClangBuiltLinux/linux/issues/103
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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For starters, the bridge netfilter code registers operations that
are invoked any time nh_hook is called. Specifically, ip_sabotage_in
watches for nested calls for NF_INET_PRE_ROUTING when a bridge is in
the stack.
Packet wise, the bridge netfilter hook runs first. br_nf_pre_routing
allocates nf_bridge, sets in_prerouting to 1 and calls NF_HOOK for
NF_INET_PRE_ROUTING. It's finish function, br_nf_pre_routing_finish,
then resets in_prerouting flag to 0 and the packet continues up the
stack. The packet eventually makes it to the VRF driver and it invokes
nf_hook for NF_INET_PRE_ROUTING in case any rules have been added against
the vrf device.
Because of the registered operations the call to nf_hook causes
ip_sabotage_in to be invoked. That function sees the nf_bridge on the
skb and that in_prerouting is not set. Thinking it is an invalid nested
call it steals (drops) the packet.
Update ip_sabotage_in to recognize that the bridge or one of its upper
devices (e.g., vlan) can be enslaved to a VRF (L3 master device) and
allow the packet to go through the nf_hook a second time.
Fixes: 73e20b761acf ("net: vrf: Add support for PREROUTING rules on vrf device")
Reported-by: D'Souza, Nelson <ndsouza@ciena.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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We see the following scenario:
1) Link endpoint B on node 1 discovers that its peer endpoint is gone.
Since there is a second working link, failover procedure is started.
2) Link endpoint A on node 1 sends a FAILOVER message to peer endpoint
A on node 2. The node item 1->2 goes to state FAILINGOVER.
3) Linke endpoint A/2 receives the failover, and is supposed to take
down its parallell link endpoint B/2, while producing a FAILOVER
message to send back to A/1.
4) However, B/2 has already been deleted, so no FAILOVER message can
created.
5) Node 1->2 remains in state FAILINGOVER forever, refusing to receive
any messages that can bring B/1 up again. We are left with a non-
redundant link between node 1 and 2.
We fix this with letting endpoint A/2 build a dummy FAILOVER message
to send to back to A/1, so that the situation can be resolved.
Signed-off-by: LUU Duc Canh <canh.d.luu@dektech.com.au>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Fixes
Here are some miscellaneous fixes for AF_RXRPC:
(1) Remove a duplicate variable initialisation.
(2) Fix one of the checks made when we decide to set up a new incoming
service call in which a flag is being checked in the wrong field of
the packet header. This check is abstracted out into helper
functions.
(3) Fix RTT gathering. The code has been trying to make use of socket
timestamps, but wasn't actually enabling them. The code has also been
recording a transmit time for the outgoing packet for which we're
going to measure the RTT after sending the message - but we can get
the incoming packet before we get to that and record a negative RTT.
(4) Fix the emission of BUSY packets (we are emitting ABORTs instead).
(5) Improve error checking on incoming packets.
(6) Try to fix a bug in new service call handling whereby a BUG we should
never be able to reach somehow got triggered. Do this by moving much
of the checking as early as possible and not repeating it later
(depends on (5) above).
(7) Fix the sockopts set on a UDP6 socket to include the ones set on a
UDP4 socket so that we receive UDP4 errors and packet-too-large
notifications too.
(8) Fix the distribution of errors so that we do it at the point of
receiving an error in the UDP callback rather than deferring it
thereby cutting short any transmissions that would otherwise occur in
the window.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix error distribution by immediately delivering the errors to all the
affected calls rather than deferring them to a worker thread. The problem
with the latter is that retries and things can happen in the meantime when we
want to stop that sooner.
To this end:
(1) Stop the error distributor from removing calls from the error_targets
list so that peer->lock isn't needed to synchronise against other adds
and removals.
(2) Require the peer's error_targets list to be accessed with RCU, thereby
avoiding the need to take peer->lock over distribution.
(3) Don't attempt to affect a call's state if it is already marked complete.
Signed-off-by: David Howells <dhowells@redhat.com>
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It seems that enabling IPV6_RECVERR on an IPv6 socket doesn't also turn on
IP_RECVERR, so neither local errors nor ICMP-transported remote errors from
IPv4 peer addresses are returned to the AF_RXRPC protocol.
Make the sockopt setting code in rxrpc_open_socket() fall through from the
AF_INET6 case to the AF_INET case to turn on all the AF_INET options too in
the AF_INET6 case.
Fixes: f2aeed3a591f ("rxrpc: Fix error reception on AF_INET6 sockets")
Signed-off-by: David Howells <dhowells@redhat.com>
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Make the following changes to improve the robustness of the code that sets
up a new service call:
(1) Cache the rxrpc_sock struct obtained in rxrpc_data_ready() to do a
service ID check and pass that along to rxrpc_new_incoming_call().
This means that I can remove the check from rxrpc_new_incoming_call()
without the need to worry about the socket attached to the local
endpoint getting replaced - which would invalidate the check.
(2) Cache the rxrpc_peer struct, thereby allowing the peer search to be
done once. The peer is passed to rxrpc_new_incoming_call(), thereby
saving the need to repeat the search.
This also reduces the possibility of rxrpc_publish_service_conn()
BUG()'ing due to the detection of a duplicate connection, despite the
initial search done by rxrpc_find_connection_rcu() having turned up
nothing.
This BUG() shouldn't ever get hit since rxrpc_data_ready() *should* be
non-reentrant and the result of the initial search should still hold
true, but it has proven possible to hit.
I *think* this may be due to __rxrpc_lookup_peer_rcu() cutting short
the iteration over the hash table if it finds a matching peer with a
zero usage count, but I don't know for sure since it's only ever been
hit once that I know of.
Another possibility is that a bug in rxrpc_data_ready() that checked
the wrong byte in the header for the RXRPC_CLIENT_INITIATED flag
might've let through a packet that caused a spurious and invalid call
to be set up. That is addressed in another patch.
(3) Fix __rxrpc_lookup_peer_rcu() to skip peer records that have a zero
usage count rather than stopping and returning not found, just in case
there's another peer record behind it in the bucket.
(4) Don't search the peer records in rxrpc_alloc_incoming_call(), but
rather either use the peer cached in (2) or, if one wasn't found,
preemptively install a new one.
Fixes: 8496af50eb38 ("rxrpc: Use RCU to access a peer's service connection tree")
Signed-off-by: David Howells <dhowells@redhat.com>
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Do more up-front checking on incoming packets to weed out invalid ones and
also ones aimed at services that we don't support.
Whilst we're at it, replace the clearing of call and skew if we don't find
a connection with just initialising the variables to zero at the top of the
function.
Signed-off-by: David Howells <dhowells@redhat.com>
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In the input path, a received sk_buff can be marked for rejection by
setting RXRPC_SKB_MARK_* in skb->mark and, if needed, some auxiliary data
(such as an abort code) in skb->priority. The rejection is handled by
queueing the sk_buff up for dealing with in process context. The output
code reads the mark and priority and, theoretically, generates an
appropriate response packet.
However, if RXRPC_SKB_MARK_BUSY is set, this isn't noticed and an ABORT
message with a random abort code is generated (since skb->priority wasn't
set to anything).
Fix this by outputting the appropriate sort of packet.
Also, whilst we're at it, most of the marks are no longer used, so remove
them and rename the remaining two to something more obvious.
Fixes: 248f219cb8bc ("rxrpc: Rewrite the data and ack handling code")
Signed-off-by: David Howells <dhowells@redhat.com>
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Fix RTT information gathering in AF_RXRPC by the following means:
(1) Enable Rx timestamping on the transport socket with SO_TIMESTAMPNS.
(2) If the sk_buff doesn't have a timestamp set when rxrpc_data_ready()
collects it, set it at that point.
(3) Allow ACKs to be requested on the last packet of a client call, but
not a service call. We need to be careful lest we undo:
bf7d620abf22c321208a4da4f435e7af52551a21
Author: David Howells <dhowells@redhat.com>
Date: Thu Oct 6 08:11:51 2016 +0100
rxrpc: Don't request an ACK on the last DATA packet of a call's Tx phase
but that only really applies to service calls that we're handling,
since the client side gets to send the final ACK (or not).
(4) When about to transmit an ACK or DATA packet, record the Tx timestamp
before only; don't update the timestamp afterwards.
(5) Switch the ordering between recording the serial and recording the
timestamp to always set the serial number first. The serial number
shouldn't be seen referenced by an ACK packet until we've transmitted
the packet bearing it - so in the Rx path, we don't need the timestamp
until we've checked the serial number.
Fixes: cf1a6474f807 ("rxrpc: Add per-peer RTT tracker")
Signed-off-by: David Howells <dhowells@redhat.com>
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There's a check in rxrpc_data_ready() that's checking the CLIENT_INITIATED
flag in the packet type field rather than in the packet flags field.
Fix this by creating a pair of helper functions to check whether the packet
is going to the client or to the server and use them generally.
Fixes: 248f219cb8bc ("rxrpc: Rewrite the data and ack handling code")
Signed-off-by: David Howells <dhowells@redhat.com>
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rxrpc_find_connection_rcu() initialises variable k twice with the same
information. Remove one of the initialisations.
Signed-off-by: David Howells <dhowells@redhat.com>
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Since we do no longer require NAPI drivers to provide
an ndo_poll_controller(), napi_schedule() has not been done
before poll_one_napi() invocation.
So testing NAPI_STATE_SCHED is likely to cause early returns.
While we are at it, remove outdated comment.
Note to future bisections : This change might surface prior
bugs in drivers. See commit 73f21c653f93 ("bnxt_en: Fix TX
timeout during netpoll.") for one occurrence.
Fixes: ac3d9dd034e5 ("netpoll: make ndo_poll_controller() optional")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Song Liu <songliubraving@fb.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
More patches than I'd like perhaps, but each seems reasonable:
* two new spectre-v1 mitigations in nl80211
* TX status fix in general, and mesh in particular
* powersave vs. offchannel fix
* regulatory initialization fix
* fix for a queue hang due to a bad return value
* allocate TXQs for active monitor interfaces, fixing my
earlier patch to avoid unnecessary allocations where I
missed this case needed them
* fix TDLS data frames priority assignment
* fix scan results processing to take into account duplicate
channel numbers (over different operating classes, but we
don't necessarily know the operating class)
* various hwsim fixes for radio destruction and new radio
announcement messages
* remove an extraneous kernel-doc line
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use array_index_nospec() to sanitize i with respect to speculation.
Note that the user doesn't control i directly, but can make it out
of bounds by not finding a threshold in the array.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
[add note about user control, as explained by Masashi]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Use array_index_nospec() to sanitize ridx with respect to speculation.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Monitor mode interfaces with the active flag are passed down to the driver.
Drivers using TXQ expect that all interfaces have allocated TXQs before
they get added.
Fixes: 79af1f866193d ("mac80211: avoid allocating TXQs that won't be used")
Cc: stable@vger.kernel.org
Reported-by: Catrinel Catrinescu <cc@80211.de>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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TX status reporting to ieee80211s is through ieee80211s_update_metric.
There are two problems about ieee80211s_update_metric:
1. The purpose is to estimate the fail probability
to a specific link. No need to restrict to data frame.
2. Current implementation does not work if wireless driver does not
pass tx_status with skb.
Fix this by removing ieee80211_is_data condition, passing
ieee80211_tx_status directly to ieee80211s_update_metric, and
putting it in both __ieee80211_tx_status and ieee80211_tx_status_ext.
Signed-off-by: Yuan-Chi Pang <fu3mo6goo@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If the TDLS setup happens over a connection to an AP that
doesn't have QoS, we nevertheless assign a non-zero TID
(skb->priority) and queue mapping, which may confuse us or
drivers later.
Fix it by just assigning the special skb->priority and then
using ieee80211_select_queue() just like other data frames
would go through.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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cfg80211_get_bss_channel() is used to update the RX channel based on the
available frame payload information (channel number from DSSS Parameter
Set element or HT Operation element). This is needed on 2.4 GHz channels
where frames may be received on neighboring channels due to overlapping
frequency range.
This might of some use on the 5 GHz band in some corner cases, but
things are more complex there since there is no n:1 or 1:n mapping
between channel numbers and frequencies due to multiple different
starting frequencies in different operating classes. This could result
in ieee80211_channel_to_frequency() returning incorrect frequency and
ieee80211_get_channel() returning incorrect channel information (or
indication of no match). In the previous implementation, this could
result in some scan results being dropped completely, e.g., for the 4.9
GHz channels. That prevented connection to such BSSs.
Fix this by using the driver-provided channel pointer if
ieee80211_get_channel() does not find matching channel data for the
channel number in the frame payload and if the scan is done with 5 MHz
or 10 MHz channel bandwidth. While doing this, also add comments
describing what the function is trying to achieve to make it easier to
understand what happens here and why.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In our environment running lots of mesh nodes, we are seeing the
pending queue hang periodically, with the debugfs queues file showing
lines such as:
00: 0x00000000/348
i.e. there are a large number of frames but no stop reason set.
One way this could happen is if queue processing from the pending
tasklet exited early without processing all frames, and without having
some future event (incoming frame, stop reason flag, ...) to reschedule
it.
Exactly this can occur today if ieee80211_tx() returns false due to
packet drops or power-save buffering in the tx handlers. In the
past, this function would return true in such cases, and the change
to false doesn't seem to be intentional. Fix this case by reverting
to the previous behavior.
Fixes: bb42f2d13ffc ("mac80211: Move reorder-sensitive TX handlers to after TXQ dequeue")
Signed-off-by: Bob Copeland <bobcopeland@fb.com>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Core regulatory hints didn't set wiphy_idx to WIPHY_IDX_INVALID. Since
the regulatory request is zeroed, wiphy_idx was always implicitly set to
0. This resulted in updating only phy #0.
Fix that.
Fixes: 806a9e39670b ("cfg80211: make regulatory_request use wiphy_idx instead of wiphy")
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
[add fixes tag]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Otherwise the offchannel frame might be queued due to
IEEE80211_QUEUE_STOP_REASON_PS and later dropped (in
ieee80211_tx_frags()). Anyway, it doesn't make much sense to wake up
the device during ROC.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If a frame is dropped for any reason, mac80211 wouldn't report the TX
status back to user space.
As the user space may rely on the TX_STATUS to kick its state
machines, resends etc, it's better to just report this frame as not
acked instead.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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(fix documentation and sysctl access to treat it as such)
Tested:
# zcat /proc/config.gz | egrep ^CONFIG_HZ
CONFIG_HZ_1000=y
CONFIG_HZ=1000
# echo $[(1<<32)/1000 + 1] | tee /proc/sys/net/ipv4/tcp_probe_interval
4294968
tee: /proc/sys/net/ipv4/tcp_probe_interval: Invalid argument
# echo $[(1<<32)/1000] | tee /proc/sys/net/ipv4/tcp_probe_interval
4294967
# echo 0 | tee /proc/sys/net/ipv4/tcp_probe_interval
# echo -1 | tee /proc/sys/net/ipv4/tcp_probe_interval
-1
tee: /proc/sys/net/ipv4/tcp_probe_interval: Invalid argument
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add flag wol_enabled to struct net_device indicating whether
Wake-on-LAN is enabled. As first user phy_suspend() will use it to
decide whether PHY can be suspended or not.
Fixes: f1e911d5d0df ("r8169: add basic phylib support")
Fixes: e8cfd9d6c772 ("net: phy: call state machine synchronously in phy_stop")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The change to move metrics from the dst to rt6_info moved the call
to ip6_convert_metrics from ip6_route_add to ip6_route_info_create. In
doing so it makes the call in ip6_route_info_append redundant and
actually leaks the metrics installed as part of the ip6_route_info_create.
Remove the now unnecessary call.
Fixes: d4ead6b34b67f ("net/ipv6: move metrics from dst to rt6_info")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In tipc_link_reset() we copy the wakeup queue to input queue using
skb_queue_splice_init(link->wakeupq, link->inputq).
This is performed without holding any locks. The lists might be
simultaneously be accessed by other cpu threads in tipc_sk_rcv(),
something leading to to random missing packets.
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If we detect that under lying carrier detects errors and goes down,
we reset the bearer.
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In the case of implicit connect message with data > 1K, the flow
control accounting is incorrect. At this state, the socket does not
know the peer nodes capability and falls back to legacy flow control
by return 1, however the receiver of this message will perform the
new block accounting. This leads to a slack and eventually traffic
disturbance.
In this commit, we perform tipc_node_get_capabilities() at implicit
connect and perform accounting based on the peer's capability.
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Presently, for non-zero copy case, separate pages are allocated for
storing plaintext and encrypted text of records. These pages are stored
in sg_plaintext_data and sg_encrypted_data scatterlists inside record
structure. Further, sg_plaintext_data & sg_encrypted_data are passed
to cryptoapis for record encryption. Allocating separate pages for
plaintext and encrypted text is inefficient from both required memory
and performance point of view.
This patch adds support of inplace encryption of records. For non-zero
copy case, we reuse the pages from sg_encrypted_data scatterlist to
copy the application's plaintext data. For the movement of pages from
sg_encrypted_data to sg_plaintext_data scatterlists, we introduce a new
function move_to_plaintext_sg(). This function add pages into
sg_plaintext_data from sg_encrypted_data scatterlists.
tls_do_encryption() is modified to pass the same scatterlist as both
source and destination into aead_request_set_crypt() if inplace crypto
has been enabled. A new ariable 'inplace_crypto' has been introduced in
record structure to signify whether the same scatterlist can be used.
By default, the inplace_crypto is enabled in get_rec(). If zero-copy is
used (i.e. plaintext data is not copied), inplace_crypto is set to '0'.
Signed-off-by: Vakul Garg <vakul.garg@nxp.com>
Reviewed-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Johan Hedberg says:
====================
pull request: bluetooth-next 2018-09-30
Here's the first bluetooth-next pull request for the 4.20 kernel.
- Fixes & cleanups to hci_qca driver
- NULL dereference fix to debugfs
- Improved L2CAP Connection-oriented Channel MTU & MPS handling
- Added support for USB-based RTL8822C controller
- Added device ID for BCM4335C0 UART-based controller
- Various other smaller cleanups & fixes
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix crash caused by NULL pointer dereference when debugfs functions
le_max_key_read, le_max_key_size_write, le_min_key_size_read or
le_min_key_size_write and Bluetooth adapter was powered off.
Fix is to move max_key_size and min_key_size from smp_dev to hci_dev.
At the same time they were renamed to le_max_key_size and
le_min_key_size.
BUG: unable to handle kernel NULL pointer dereference at 00000000000002e8
PGD 0 P4D 0
Oops: 0000 [#24] SMP PTI
CPU: 2 PID: 6255 Comm: cat Tainted: G D OE 4.18.9-200.fc28.x86_64 #1
Hardware name: LENOVO 4286CTO/4286CTO, BIOS 8DET76WW (1.46 ) 06/21/2018
RIP: 0010:le_max_key_size_read+0x45/0xb0 [bluetooth]
Code: 00 00 00 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 31 c0 48 8b 87 c8 00 00 00 48 8d 7c 24 04 48 8b 80 48 0a 00 00 <48> 8b 80 e8 02 00 00 0f b6 48 52 e8 fb b6 b3 ed be 04 00 00 00 48
RSP: 0018:ffffab23c3ff3df0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00007f0b4ca2e000 RCX: ffffab23c3ff3f08
RDX: ffffffffc0ddb033 RSI: 0000000000000004 RDI: ffffab23c3ff3df4
RBP: 0000000000020000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffab23c3ff3ed8 R11: 0000000000000000 R12: ffffab23c3ff3f08
R13: 00007f0b4ca2e000 R14: 0000000000020000 R15: ffffab23c3ff3f08
FS: 00007f0b4ca0f540(0000) GS:ffff91bd5e280000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000002e8 CR3: 00000000629fa006 CR4: 00000000000606e0
Call Trace:
full_proxy_read+0x53/0x80
__vfs_read+0x36/0x180
vfs_read+0x8a/0x140
ksys_read+0x4f/0xb0
do_syscall_64+0x5b/0x160
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Signed-off-by: Matias Karhumaa <matias.karhumaa@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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If the remote is not able to fully utilize the MPS choosen recalculate
the credits based on the actual amount it is sending that way it can
still send packets of MTU size without credits dropping to 0.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Give enough rx credits for a full packet instead of using an arbitrary
number which may not be enough depending on the MTU and MPS which can
cause interruptions while waiting for more credits, also remove
debugfs entry for l2cap_le_max_credits.
With these changes the credits are restored after each SDU is received
instead of using fixed threshold, this way it is garanteed that there
will always be enough credits to send a packet without waiting more
credits to arrive.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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This ensures the MPS can fit in a single HCI fragment so each
segment don't have to be reassembled at HCI level, in addition to
that also remove the debugfs entry to configure the MPS.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Add the definitions for adding entries to the LE resolve list and
removing entries from the LE resolve list. When the LE resolve list
gets changed via HCI commands make sure that the internal storage of
the resolve list entries gets updated.
Signed-off-by: Ankit Navik <ankit.p.navik@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The barriers are unneeded; wait_woken() and woken_wake_function()
already provide us with the required synchronization: remove them
and document that we're relying on the (implicit) synchronization
provided by wait_woken() and woken_wake_function().
Signed-off-by: Andrea Parri <andrea.parri@amarulasolutions.com>
Reviewed-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The code to obtain the correct table for the incoming interface was
missing for IPv6. This has been added along with the table creation
notification to fib rules for the RTNL_FAMILY_IP6MR address family.
Signed-off-by: Patrick Ruddy <pruddy@vyatta.att-mail.com>
Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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