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2013-03-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds5-31/+85
Pull networking fixes from David Miller: "A moderately sized pile of fixes, some specifically for merge window introduced regressions although others are for longer standing items and have been queued up for -stable. I'm kind of tired of all the RDS protocol bugs over the years, to be honest, it's way out of proportion to the number of people who actually use it. 1) Fix missing range initialization in netfilter IPSET, from Jozsef Kadlecsik. 2) ieee80211_local->tim_lock needs to use BH disabling, from Johannes Berg. 3) Fix DMA syncing in SFC driver, from Ben Hutchings. 4) Fix regression in BOND device MAC address setting, from Jiri Pirko. 5) Missing usb_free_urb in ISDN Hisax driver, from Marina Makienko. 6) Fix UDP checksumming in bnx2x driver for 57710 and 57711 chips, fix from Dmitry Kravkov. 7) Missing cfgspace_lock initialization in BCMA driver. 8) Validate parameter size for SCTP assoc stats getsockopt(), from Guenter Roeck. 9) Fix SCTP association hangs, from Lee A Roberts. 10) Fix jumbo frame handling in r8169, from Francois Romieu. 11) Fix phy_device memory leak, from Petr Malat. 12) Omit trailing FCS from frames received in BGMAC driver, from Hauke Mehrtens. 13) Missing socket refcount release in L2TP, from Guillaume Nault. 14) sctp_endpoint_init should respect passed in gfp_t, rather than use GFP_KERNEL unconditionally. From Dan Carpenter. 15) Add AISX AX88179 USB driver, from Freddy Xin. 16) Remove MAINTAINERS entries for drivers deleted during the merge window, from Cesar Eduardo Barros. 17) RDS protocol can try to allocate huge amounts of memory, check that the user's request length makes sense, from Cong Wang. 18) SCTP should use the provided KMALLOC_MAX_SIZE instead of it's own, bogus, definition. From Cong Wang. 19) Fix deadlocks in FEC driver by moving TX reclaim into NAPI poll, from Frank Li. Also, fix a build error introduced in the merge window. 20) Fix bogus purging of default routes in ipv6, from Lorenzo Colitti. 21) Don't double count RTT measurements when we leave the TCP receive fast path, from Neal Cardwell." * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (61 commits) tcp: fix double-counted receiver RTT when leaving receiver fast path CAIF: fix sparse warning for caif_usb rds: simplify a warning message net: fec: fix build error in no MXC platform net: ipv6: Don't purge default router if accept_ra=2 net: fec: put tx to napi poll function to fix dead lock sctp: use KMALLOC_MAX_SIZE instead of its own MAX_KMALLOC_SIZE rds: limit the size allocated by rds_message_alloc() MAINTAINERS: remove eexpress MAINTAINERS: remove drivers/net/wan/cycx* MAINTAINERS: remove 3c505 caif_dev: fix sparse warnings for caif_flow_cb ax88179_178a: ASIX AX88179_178A USB 3.0/2.0 to gigabit ethernet adapter driver sctp: use the passed in gfp flags instead GFP_KERNEL ipv[4|6]: correct dropwatch false positive in local_deliver_finish l2tp: Restore socket refcount when sendmsg succeeds net/phy: micrel: Disable asymmetric pause for KSZ9021 bgmac: omit the fcs phy: Fix phy_device_free memory leak bnx2x: Fix KR2 work-around condition ...
2013-03-04sctp: use KMALLOC_MAX_SIZE instead of its own MAX_KMALLOC_SIZECong Wang1-5/+3
Don't definite its own MAX_KMALLOC_SIZE, use the one defined in mm. Cc: Vlad Yasevich <vyasevich@gmail.com> Cc: Sridhar Samudrala <sri@us.ibm.com> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-01sctp: use the passed in gfp flags instead GFP_KERNELDan Carpenter1-1/+1
This patch doesn't change how the code works because in the current kernel gfp is always GFP_KERNEL. But gfp was obviously intended instead of GFP_KERNEL. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-28sctp: fix association hangs due to partial delivery errorsLee A. Roberts1-11/+43
In sctp_ulpq_tail_data(), use return values 0,1 to indicate whether a complete event (with MSG_EOR set) was delivered. A return value of -ENOMEM continues to indicate an out-of-memory condition was encountered. In sctp_ulpq_retrieve_partial() and sctp_ulpq_retrieve_first(), correct message reassembly logic for SCTP partial delivery. Change logic to ensure that as much data as possible is sent with the initial partial delivery and that following partial deliveries contain all available data. In sctp_ulpq_partial_delivery(), attempt partial delivery only if the data on the head of the reassembly queue is at or before the cumulative TSN ACK point. In sctp_ulpq_renege(), use the modified return values from sctp_ulpq_tail_data() to choose whether to attempt partial delivery or to attempt to drain the reassembly queue as a means to reduce memory pressure. Remove call to sctp_tsnmap_mark(), as this is handled correctly in call to sctp_ulpq_tail_data(). Signed-off-by: Lee A. Roberts <lee.roberts@hp.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com>
2013-02-28sctp: fix association hangs due to errors when reneging events from the ↵Lee A. Roberts1-4/+22
ordering queue In sctp_ulpq_renege_list(), events being reneged from the ordering queue may correspond to multiple TSNs. Identify all affected packets; sum freed space and renege from the tsnmap. Signed-off-by: Lee A. Roberts <lee.roberts@hp.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com>
2013-02-28sctp: fix association hangs due to reneging packets below the cumulative TSN ↵Lee A. Roberts1-2/+7
ACK point In sctp_ulpq_renege_list(), do not renege packets below the cumulative TSN ACK point. Signed-off-by: Lee A. Roberts <lee.roberts@hp.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com>
2013-02-28sctp: fix association hangs due to off-by-one errors in sctp_tsnmap_grow()Lee A. Roberts1-6/+7
In sctp_tsnmap_mark(), correct off-by-one error when calculating size value for sctp_tsnmap_grow(). In sctp_tsnmap_grow(), correct off-by-one error when copying and resizing the tsnmap. If max_tsn_seen is in the LSB of the word, this bit can be lost, causing the corresponding packet to be transmitted again and to be entered as a duplicate into the SCTP reassembly/ordering queues. Change parameter name from "gap" (zero-based index) to "size" (one-based) to enhance code readability. Signed-off-by: Lee A. Roberts <lee.roberts@hp.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com>
2013-02-27hlist: drop the node parameter from iteratorsSasha Levin4-17/+10
I'm not sure why, but the hlist for each entry iterators were conceived list_for_each_entry(pos, head, member) The hlist ones were greedy and wanted an extra parameter: hlist_for_each_entry(tpos, pos, head, member) Why did they need an extra pos parameter? I'm not quite sure. Not only they don't really need it, it also prevents the iterator from looking exactly like the list iterator, which is unfortunate. Besides the semantic patch, there was some manual work required: - Fix up the actual hlist iterators in linux/list.h - Fix up the declaration of other iterators based on the hlist ones. - A very small amount of places were using the 'node' parameter, this was modified to use 'obj->member' instead. - Coccinelle didn't handle the hlist_for_each_entry_safe iterator properly, so those had to be fixed up manually. The semantic patch which is mostly the work of Peter Senna Tschudin is here: @@ iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host; type T; expression a,c,d,e; identifier b; statement S; @@ -T b; <+... when != b ( hlist_for_each_entry(a, - b, c, d) S | hlist_for_each_entry_continue(a, - b, c) S | hlist_for_each_entry_from(a, - b, c) S | hlist_for_each_entry_rcu(a, - b, c, d) S | hlist_for_each_entry_rcu_bh(a, - b, c, d) S | hlist_for_each_entry_continue_rcu_bh(a, - b, c) S | for_each_busy_worker(a, c, - b, d) S | ax25_uid_for_each(a, - b, c) S | ax25_for_each(a, - b, c) S | inet_bind_bucket_for_each(a, - b, c) S | sctp_for_each_hentry(a, - b, c) S | sk_for_each(a, - b, c) S | sk_for_each_rcu(a, - b, c) S | sk_for_each_from -(a, b) +(a) S + sk_for_each_from(a) S | sk_for_each_safe(a, - b, c, d) S | sk_for_each_bound(a, - b, c) S | hlist_for_each_entry_safe(a, - b, c, d, e) S | hlist_for_each_entry_continue_rcu(a, - b, c) S | nr_neigh_for_each(a, - b, c) S | nr_neigh_for_each_safe(a, - b, c, d) S | nr_node_for_each(a, - b, c) S | nr_node_for_each_safe(a, - b, c, d) S | - for_each_gfn_sp(a, c, d, b) S + for_each_gfn_sp(a, c, d) S | - for_each_gfn_indirect_valid_sp(a, c, d, b) S + for_each_gfn_indirect_valid_sp(a, c, d) S | for_each_host(a, - b, c) S | for_each_host_safe(a, - b, c, d) S | for_each_mesh_entry(a, - b, c, d) S ) ...+> [akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c] [akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c] [akpm@linux-foundation.org: checkpatch fixes] [akpm@linux-foundation.org: fix warnings] [akpm@linux-foudnation.org: redo intrusive kvm changes] Tested-by: Peter Senna Tschudin <peter.senna@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Gleb Natapov <gleb@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27sctp: convert to idr_alloc()Tejun Heo1-16/+15
Convert to the much saner new idr interface. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Cc: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27net/sctp: Validate parameter size for SCTP_GET_ASSOC_STATSGuenter Roeck1-3/+3
Building sctp may fail with: In function ‘copy_from_user’, inlined from ‘sctp_getsockopt_assoc_stats’ at net/sctp/socket.c:5656:20: arch/x86/include/asm/uaccess_32.h:211:26: error: call to ‘copy_from_user_overflow’ declared with attribute error: copy_from_user() buffer size is not provably correct if built with W=1 due to a missing parameter size validation before the call to copy_from_user. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-21Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree from Jiri Kosina: "Assorted tiny fixes queued in trivial tree" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (22 commits) DocBook: update EXPORT_SYMBOL entry to point at export.h Documentation: update top level 00-INDEX file with new additions ARM: at91/ide: remove unsused at91-ide Kconfig entry percpu_counter.h: comment code for better readability x86, efi: fix comment typo in head_32.S IB: cxgb3: delay freeing mem untill entirely done with it net: mvneta: remove unneeded version.h include time: x86: report_lost_ticks doesn't exist any more pcmcia: avoid static analysis complaint about use-after-free fs/jfs: Fix typo in comment : 'how may' -> 'how many' of: add missing documentation for of_platform_populate() btrfs: remove unnecessary cur_trans set before goto loop in join_transaction sound: soc: Fix typo in sound/codecs treewide: Fix typo in various drivers btrfs: fix comment typos Update ibmvscsi module name in Kconfig. powerpc: fix typo (utilties -> utilities) of: fix spelling mistake in comment h8300: Fix home page URL in h8300/README xtensa: Fix home page URL in Kconfig ...
2013-02-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net into netDavid S. Miller2-4/+5
Pull in 'net' to take in the bug fixes that didn't make it into 3.8-final. Also, deal with the semantic conflict of the change made to net/ipv6/xfrm6_policy.c A missing rt6->n neighbour release was added to 'net', but in 'net-next' we no longer cache the neighbour entries in the ipv6 routes so that change is not appropriate there. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-18net: proc: change proc_net_remove to remove_proc_entryGao feng1-2/+2
proc_net_remove is only used to remove proc entries that under /proc/net,it's not a general function for removing proc entries of netns. if we want to remove some proc entries which under /proc/net/stat/, we still need to call remove_proc_entry. this patch use remove_proc_entry to replace proc_net_remove. we can remove proc_net_remove after this patch. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-18net: proc: change proc_net_fops_create to proc_createGao feng1-2/+2
Right now, some modules such as bonding use proc_create to create proc entries under /proc/net/, and other modules such as ipv4 use proc_net_fops_create. It looks a little chaos.this patch changes all of proc_net_fops_create to proc_create. we can remove proc_net_fops_create after this patch. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-13net: sctp: add build check for sctp_sf_eat_sack_6_2/jsctp_sf_eat_sackDaniel Borkmann1-0/+7
In order to avoid any future surprises of kernel panics due to jprobes function mismatches (as e.g. fixed in 4cb9d6eaf85ecd: sctp: jsctp_sf_eat_sack: fix jprobes function signature mismatch), we should check both function types during build and scream loudly if they do not match. __same_type resolves to __builtin_types_compatible_p, which is 1 in case both types are the same and 0 otherwise, qualifiers are ignored. Tested by myself. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-13net: sctp: minor: make jsctp_sf_eat_sack staticDaniel Borkmann1-6/+6
The function jsctp_sf_eat_sack can be made static, no need to extend its visibility. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-13net, sctp: remove CONFIG_EXPERIMENTALKees Cook1-2/+2
This config item has not carried much meaning for a while now and is almost always enabled by default. As agreed during the Linux kernel summit, remove it. Acked-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-13net: sctp: sctp_v6_get_dst: fix boolean test in dst cacheDaniel Borkmann1-2/+3
We walk through the bind address list and try to get the best source address for a given destination. However, currently, we take the 'continue' path of the loop when an entry is invalid (!laddr->valid) *and* the entry state does not equal SCTP_ADDR_SRC (laddr->state != SCTP_ADDR_SRC). Thus, still, invalid entries with SCTP_ADDR_SRC might not 'continue' as well as valid entries with SCTP_ADDR_{NEW, SRC, DEL}, with a possible false baddr and matchlen as a result, causing in worst case dst route to be false or possibly NULL. This test should actually be a '||' instead of '&&'. But lets fix it and make this a bit easier to read by having the condition the same way as similarly done in sctp_v4_get_dst. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-12net: sctp: remove unused multiple cookie keysDaniel Borkmann2-31/+9
Vlad says: The whole multiple cookie keys code is completely unused and has been all this time. Noone uses anything other then the secret_key[0] since there is no changeover support anywhere. Thus, for now clean up its left-over fragments. Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller3-2/+7
Synchronize with 'net' in order to sort out some l2tp, wireless, and ipv6 GRE fixes that will be built on top of in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-08net: sctp: sctp_auth_make_key_vector: use sctp_auth_create_keyDaniel Borkmann1-5/+3
In sctp_auth_make_key_vector, we allocate a temporary sctp_auth_bytes structure with kmalloc instead of the sctp_auth_create_key allocator. Change this to sctp_auth_create_key as it is the case everywhere else, so that we also can properly free it via sctp_auth_key_put. This makes it easier for future code changes in the structure and allocator itself, since a single API is consistently used for this purpose. Also, by using sctp_auth_create_key we're doing sanity checks over the arguments. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-08net: sctp: sctp_endpoint_free: zero out secret key dataDaniel Borkmann1-0/+5
On sctp_endpoint_destroy, previously used sensitive keying material should be zeroed out before the memory is returned, as we already do with e.g. auth keys when released. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-08net: sctp: sctp_setsockopt_auth_key: use kzfree instead of kfreeDaniel Borkmann1-1/+1
In sctp_setsockopt_auth_key, we create a temporary copy of the user passed shared auth key for the endpoint or association and after internal setup, we free it right away. Since it's sensitive data, we should zero out the key before returning the memory back to the allocator. Thus, use kzfree instead of kfree, just as we do in sctp_auth_key_put(). Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-07net: sctp: sctp_auth_make_key_vector: remove duplicate ntohs callsDaniel Borkmann1-9/+12
Instead of calling 3 times ntohs(random->param_hdr.length), 2 times ntohs(hmacs->param_hdr.length), and 3 times ntohs(chunks->param_hdr.length) within the same function, we only call each once and store it in a variable. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-07net: sctp: sctp_auth_key_put: use kzfree instead of kfreeDaniel Borkmann1-1/+1
For sensitive data like keying material, it is common practice to zero out keys before returning the memory back to the allocator. Thus, use kzfree instead of kfree. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04net: remove redundant check for timer pending state before del_timerYing Xue5-19/+10
As in del_timer() there has already placed a timer_pending() function to check whether the timer to be deleted is pending or not, it's unnecessary to check timer pending state again before del_timer() is called. Signed-off-by: Ying Xue <ying.xue@windriver.com> Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04sctp: sctp_close: fix release of bindings for deferred call_rcu'sDaniel Borkmann1-4/+5
It seems due to RCU usage, i.e. within SCTP's address binding list, a, say, ``behavioral change'' was introduced which does actually not conform to the RFC anymore. In particular consider the following (fictional) scenario to demonstrate this: do: Two SOCK_SEQPACKET-style sockets are opened (S1, S2) S1 is bound to 127.0.0.1, port 1024 [server] S2 is bound to 127.0.0.1, port 1025 [client] listen(2) is invoked on S1 From S2 we call one sendmsg(2) with msg.msg_name and msg.msg_namelen parameters set to the server's address S1, S2 are closed goto do The first pass of this loop passes successful, while the second round fails during binding of S1 (address still in use). What is happening? In the first round, the initial handshake is being done, and, at the time close(2) is called on S1, a non-graceful shutdown is performed via ABORT since in S1's receive queue an unprocessed packet is present, thus stating an error condition. This can be considered as a correct behavior. During close also all bound addresses are freed, thus nothing *must* be active anymore. In reference to RFC2960: After checking the Verification Tag, the receiving endpoint shall remove the association from its record, and shall report the termination to its upper layer. (9.1 Abort of an Association) Also, no half-open states are supported, thus after an ungraceful shutdown, we leave nothing behind. However, this seems not to be happening though. In a real-world scenario, this is exactly where it breaks the lksctp-tools functional test suite, *for instance*: ./test_sockopt test_sockopt.c 1 PASS : getsockopt(SCTP_STATUS) on a socket with no assoc test_sockopt.c 2 PASS : getsockopt(SCTP_STATUS) test_sockopt.c 3 PASS : getsockopt(SCTP_STATUS) with invalid associd test_sockopt.c 4 PASS : getsockopt(SCTP_STATUS) with NULL associd test_sockopt.c 5 BROK : bind: Address already in use The underlying problem is that sctp_endpoint_destroy() hasn't been triggered yet while the next bind attempt is being done. It will be triggered eventually (but too late) by sctp_transport_destroy_rcu() after one RCU grace period: sctp_transport_destroy() sctp_transport_destroy_rcu() ----. sctp_association_put() [*] <--+--> sctp_packet_free() sctp_association_destroy() [...] sctp_endpoint_put() skb->destructor sctp_endpoint_destroy() sctp_wfree() sctp_bind_addr_free() sctp_association_put() [*] Thus, we move out the condition with sctp_association_put() as well as the sctp_packet_free() invocation and the issue can be solved. We also better free the SCTP chunks first before putting the ref of the association. With this patch, the example above (which simulates a similar scenario as in the implementation of this test case) and therefore also the test suite run successfully through. Tested by myself. Cc: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller3-5/+15
Bring in the 'net' tree so that we can get some ipv4/ipv6 bug fixes that some net-next work will build upon. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-29Merge branch 'master' into for-nextJiri Kosina19-114/+369
Conflicts: drivers/devfreq/exynos4_bus.c Sync with Linus' tree to be able to apply patches that are against newer code (mvneta).
2013-01-28SCTP: Free the per-net sysctl table on net exit. v2Vlad Yasevich1-0/+4
Per-net sysctl table needs to be explicitly freed at net exit. Otherwise we see the following with kmemleak: unreferenced object 0xffff880402d08000 (size 2048): comm "chrome_sandbox", pid 18437, jiffies 4310887172 (age 9097.630s) hex dump (first 32 bytes): b2 68 89 81 ff ff ff ff 20 04 04 f8 01 88 ff ff .h...... ....... 04 00 00 00 a4 01 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff815b4aad>] kmemleak_alloc+0x21/0x3e [<ffffffff81110352>] slab_post_alloc_hook+0x28/0x2a [<ffffffff81113fad>] __kmalloc_track_caller+0xf1/0x104 [<ffffffff810f10c2>] kmemdup+0x1b/0x30 [<ffffffff81571e9f>] sctp_sysctl_net_register+0x1f/0x72 [<ffffffff8155d305>] sctp_net_init+0x100/0x39f [<ffffffff814ad53c>] ops_init+0xc6/0xf5 [<ffffffff814ad5b7>] setup_net+0x4c/0xd0 [<ffffffff814ada5e>] copy_net_ns+0x6d/0xd6 [<ffffffff810938b1>] create_new_namespaces+0xd7/0x147 [<ffffffff810939f4>] copy_namespaces+0x63/0x99 [<ffffffff81076733>] copy_process+0xa65/0x1233 [<ffffffff81077030>] do_fork+0x10b/0x271 [<ffffffff8100a0e9>] sys_clone+0x23/0x25 [<ffffffff815dda73>] stub_clone+0x13/0x20 [<ffffffffffffffff>] 0xffffffffffffffff I fixed the spelling of sysctl_header so the code actually compiles. -- EWB. Reported-by: Martin Mokrejs <mmokrejs@fold.natur.cuni.cz> Signed-off-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-27sctp: set association state to established in dupcook_a handlerXufeng Zhang1-1/+3
While sctp handling a duplicate COOKIE-ECHO and the action is 'Association restart', sctp_sf_do_dupcook_a() will processing the unexpected COOKIE-ECHO for peer restart, but it does not set the association state to SCTP_STATE_ESTABLISHED, so the association could stuck in SCTP_STATE_SHUTDOWN_PENDING state forever. This violates the sctp specification: RFC 4960 5.2.4. Handle a COOKIE ECHO when a TCB Exists Action A) In this case, the peer may have restarted. ..... After this, the endpoint shall enter the ESTABLISHED state. To resolve this problem, adding a SCTP_CMD_NEW_STATE cmd to the command list before SCTP_CMD_REPLY cmd, this will set the restart association to SCTP_STATE_ESTABLISHED state properly and also avoid I-bit being set in the DATA chunk header when COOKIE_ACK is bundled with DATA chunks. Signed-off-by: Xufeng Zhang <xufeng.zhang@windriver.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-17sctp: refactor sctp_outq_teardown to insure proper re-initalizationNeil Horman1-4/+8
Jamie Parsons reported a problem recently, in which the re-initalization of an association (The duplicate init case), resulted in a loss of receive window space. He tracked down the root cause to sctp_outq_teardown, which discarded all the data on an outq during a re-initalization of the corresponding association, but never reset the outq->outstanding_data field to zero. I wrote, and he tested this fix, which does a proper full re-initalization of the outq, fixing this problem, and hopefully future proofing us from simmilar issues down the road. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Reported-by: Jamie Parsons <Jamie.Parsons@metaswitch.com> Tested-by: Jamie Parsons <Jamie.Parsons@metaswitch.com> CC: Jamie Parsons <Jamie.Parsons@metaswitch.com> CC: Vlad Yasevich <vyasevich@gmail.com> CC: "David S. Miller" <davem@davemloft.net> CC: netdev@vger.kernel.org Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
Conflicts: Documentation/networking/ip-sysctl.txt drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Both conflicts were simply overlapping context. A build fix for qlcnic is in here too, simply removing the added devinit annotations which no longer exist. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-07sctp: fix Kconfig bug in default cookie hmac selectionAlex Elder1-1/+1
Commit 0d0863b02002 ("sctp: Change defaults on cookie hmac selection") added a "choice" to the sctp Kconfig file. It introduced a bug which led to an infinite loop when while running "make oldconfig". The problem is that the wrong symbol was defined as the default value for the choice. Using the correct value gets rid of the infinite loop. Note: if CONFIG_SCTP_COOKIE_HMAC_SHA1=y was present in the input config file, both that and CONFIG_SCTP_COOKIE_HMAC_MD5=y be present in the generated config file. Signed-off-by: Alex Elder <elder@inktank.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-03treewide: Replace incomming with incoming in all comments and stringsJorrit Schippers1-1/+1
Signed-off-by: Jorrit Schippers <jorrit@ncode.nl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-12-28sctp: make sctp_addr_wq_timeout_handler staticstephen hemminger1-1/+1
Fix sparse warning about local function that should be static. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-15sctp: jsctp_sf_eat_sack: fix jprobes function signature mismatchDaniel Borkmann1-1/+2
Commit 24cb81a6a (sctp: Push struct net down into all of the state machine functions) introduced the net structure into all state machine functions, but jsctp_sf_eat_sack was not updated, hence when SCTP association probing is enabled in the kernel, any simple SCTP client/server program from userspace will panic the kernel. Cc: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-15sctp: Change defaults on cookie hmac selectionNeil Horman2-4/+27
Recently I posted commit 3c68198e75 which made selection of the cookie hmac algorithm selectable. This is all well and good, but Linus noted that it changes the default config: http://marc.info/?l=linux-netdev&m=135536629004808&w=2 I've modified the sctp Kconfig file to reflect the recommended way of making this choice, using the thermal driver example specified, and brought the defaults back into line with the way they were prior to my origional patch Also, on Linus' suggestion, re-adding ability to select default 'none' hmac algorithm, so we don't needlessly bloat the kernel by forcing a non-none default. This also led me to note that we won't honor the default none condition properly because of how sctp_net_init is encoded. Fix that up as well. Tested by myself (allbeit fairly quickly). All configuration combinations seems to work soundly. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: David Miller <davem@davemloft.net> CC: Linus Torvalds <torvalds@linux-foundation.org> CC: Vlad Yasevich <vyasevich@gmail.com> CC: linux-sctp@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-13Merge branch 'for-linus' of ↵Linus Torvalds2-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial branch from Jiri Kosina: "Usual stuff -- comment/printk typo fixes, documentation updates, dead code elimination." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) HOWTO: fix double words typo x86 mtrr: fix comment typo in mtrr_bp_init propagate name change to comments in kernel source doc: Update the name of profiling based on sysfs treewide: Fix typos in various drivers treewide: Fix typos in various Kconfig wireless: mwifiex: Fix typo in wireless/mwifiex driver messages: i2o: Fix typo in messages/i2o scripts/kernel-doc: check that non-void fcts describe their return value Kernel-doc: Convention: Use a "Return" section to describe return values radeon: Fix typo and copy/paste error in comments doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c various: Fix spelling of "asynchronous" in comments. Fix misspellings of "whether" in comments. eisa: Fix spelling of "asynchronous". various: Fix spelling of "registered" in comments. doc: fix quite a few typos within Documentation target: iscsi: fix comment typos in target/iscsi drivers treewide: fix typo of "suport" in various comments and Kconfig treewide: fix typo of "suppport" in various comments ...
2012-12-07sctp: Add RCU protection to assoc->transport_addr_listThomas Graf3-10/+28
peer.transport_addr_list is currently only protected by sk_sock which is inpractical to acquire for procfs dumping purposes. This patch adds RCU protection allowing for the procfs readers to enter RCU read-side critical sections. Modification of the list continues to be serialized via sk_lock. V2: Use list_del_rcu() in sctp_association_free() to be safe Skip transports marked dead when dumping for procfs Cc: Vlad Yasevich <vyasevich@gmail.com> Cc: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Thomas Graf <tgraf@suug.ch> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-07sctp: proc: protect bind_addr->address_list accesses with rcu_read_lock()Thomas Graf1-1/+6
address_list is protected via the socket lock or RCU. Since we don't want to take the socket lock for each assoc we dump in procfs a RCU read-side critical section must be entered. V2: Skip local addresses marked as dead Cc: Vlad Yasevich <vyasevich@gmail.com> Cc: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Thomas Graf <tgraf@suug.ch> Acked-by: Vlad Yasevich <vyasevic@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-07sctp: Fix compiler warning when CONFIG_DEBUG_SECTION_MISMATCH=yChristoph Paasch1-3/+3
WARNING: net/sctp/sctp.o(.text+0x72f1): Section mismatch in reference from the function sctp_net_init() to the function .init.text:sctp_proc_init() The function sctp_net_init() references the function __init sctp_proc_init(). This is often because sctp_net_init lacks a __init annotation or the annotation of sctp_proc_init is wrong. And put __net_init after 'int' for sctp_proc_init - as it is done everywhere else in the sctp-stack. Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-03sctp: Add support to per-association statistics via a new ↵Michele Baldessari10-13/+117
SCTP_GET_ASSOC_STATS call The current SCTP stack is lacking a mechanism to have per association statistics. This is an implementation modeled after OpenSolaris' SCTP_GET_ASSOC_STATS. Userspace part will follow on lksctp if/when there is a general ACK on this. V4: - Move ipackets++ before q->immediate.func() for consistency reasons - Move sctp_max_rto() at the end of sctp_transport_update_rto() to avoid returning bogus RTO values - return asoc->rto_min when max_obs_rto value has not changed V3: - Increase ictrlchunks in sctp_assoc_bh_rcv() as well - Move ipackets++ to sctp_inq_push() - return 0 when no rto updates took place since the last call V2: - Implement partial retrieval of stat struct to cope for future expansion - Kill the rtxpackets counter as it cannot be precise anyway - Rename outseqtsns to outofseqtsns to make it clearer that these are out of sequence unexpected TSNs - Move asoc->ipackets++ under a lock to avoid potential miscounts - Fold asoc->opackets++ into the already existing asoc check - Kill unneeded (q->asoc) test when increasing rtxchunks - Do not count octrlchunks if sending failed (SCTP_XMIT_OK != 0) - Don't count SHUTDOWNs as SACKs - Move SCTP_GET_ASSOC_STATS to the private space API - Adjust the len check in sctp_getsockopt_assoc_stats() to allow for future struct growth - Move association statistics in their own struct - Update idupchunks when we send a SACK with dup TSNs - return min_rto in max_rto when RTO has not changed. Also return the transport when max_rto last changed. Signed-off: Michele Baldessari <michele@acksyn.org> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-30sctp: verify length provided in heartbeat information parameterThomas Graf1-2/+8
If the variable parameter length provided in the mandatory heartbeat information parameter exceeds the calculated payload length the packet has been corrupted. Reply with a parameter length protocol violation message. Signed-off-by: Thomas Graf <tgraf@suug.ch> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-30sctp: fix CONFIG_SCTP_DBG_MSG=y null pointer dereference in sctp_v6_get_dst()Tommi Rantala1-1/+1
Trinity (the syscall fuzzer) triggered the following BUG, reproducible only when the kernel is configured with CONFIG_SCTP_DBG_MSG=y. When CONFIG_SCTP_DBG_MSG is not set, the null pointer is never dereferenced. ---[ end trace a4de0bfcb38a3642 ]--- BUG: unable to handle kernel NULL pointer dereference at 0000000000000100 IP: [<ffffffff8136796e>] ip6_string+0x1e/0xa0 PGD 4eead067 PUD 4e472067 PMD 0 Oops: 0000 [#1] PREEMPT SMP Modules linked in: CPU 3 Pid: 21324, comm: trinity-child11 Tainted: G W 3.7.0-rc7+ #61 ASUSTeK Computer INC. EB1012/EB1012 RIP: 0010:[<ffffffff8136796e>] [<ffffffff8136796e>] ip6_string+0x1e/0xa0 RSP: 0018:ffff88004e4637a0 EFLAGS: 00010046 RAX: ffff88004e4637da RBX: ffff88004e4637da RCX: 0000000000000000 RDX: ffffffff8246e92a RSI: 0000000000000100 RDI: ffff88004e4637da RBP: ffff88004e4637a8 R08: 000000000000ffff R09: 000000000000ffff R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8289d600 R13: ffffffff8289d230 R14: ffffffff8246e928 R15: ffffffff8289d600 FS: 00007fed95153700(0000) GS:ffff88005fd80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000100 CR3: 000000004eeac000 CR4: 00000000000007e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process trinity-child11 (pid: 21324, threadinfo ffff88004e462000, task ffff8800524b0000) Stack: ffff88004e4637da ffff88004e463828 ffffffff81368eee 000000004e4637d8 ffffffff0000ffff ffff88000000ffff 0000000000000000 000000004e4637f8 ffffffff826285d8 ffff88004e4637f8 0000000000000000 ffff8800524b06b0 Call Trace: [<ffffffff81368eee>] ip6_addr_string.isra.11+0x3e/0xa0 [<ffffffff81369183>] pointer.isra.12+0x233/0x2d0 [<ffffffff810a413a>] ? vprintk_emit+0x1ba/0x450 [<ffffffff8110953d>] ? trace_hardirqs_on_caller+0x10d/0x1a0 [<ffffffff81369757>] vsnprintf+0x187/0x5d0 [<ffffffff81369c62>] vscnprintf+0x12/0x30 [<ffffffff810a4028>] vprintk_emit+0xa8/0x450 [<ffffffff81e5cb00>] printk+0x49/0x4b [<ffffffff81d17221>] sctp_v6_get_dst+0x731/0x780 [<ffffffff81d16e15>] ? sctp_v6_get_dst+0x325/0x780 [<ffffffff81d00a96>] sctp_transport_route+0x46/0x120 [<ffffffff81cff0f1>] sctp_assoc_add_peer+0x161/0x350 [<ffffffff81d0fd8d>] sctp_sendmsg+0x6cd/0xcb0 [<ffffffff81b55bf0>] ? inet_create+0x670/0x670 [<ffffffff81b55cfb>] inet_sendmsg+0x10b/0x220 [<ffffffff81b55bf0>] ? inet_create+0x670/0x670 [<ffffffff81a72a64>] ? sock_update_classid+0xa4/0x2b0 [<ffffffff81a72ab0>] ? sock_update_classid+0xf0/0x2b0 [<ffffffff81a6ac1c>] sock_sendmsg+0xdc/0xf0 [<ffffffff8118e9e5>] ? might_fault+0x85/0x90 [<ffffffff8118e99c>] ? might_fault+0x3c/0x90 [<ffffffff81a6e12a>] sys_sendto+0xfa/0x130 [<ffffffff810a9887>] ? do_setitimer+0x197/0x380 [<ffffffff81e960d5>] ? sysret_check+0x22/0x5d [<ffffffff81e960a9>] system_call_fastpath+0x16/0x1b Code: 01 eb 89 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 f8 31 c9 48 89 e5 53 eb 12 0f 1f 40 00 48 83 c1 01 48 83 c0 04 48 83 f9 08 74 70 <0f> b6 3c 4e 89 fb 83 e7 0f c0 eb 04 41 89 d8 41 83 e0 0f 0f b6 RIP [<ffffffff8136796e>] ip6_string+0x1e/0xa0 RSP <ffff88004e4637a0> CR2: 0000000000000100 ---[ end trace a4de0bfcb38a3643 ]--- Signed-off-by: Tommi Rantala <tt.rantala@gmail.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller3-9/+17
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-28sctp: Error in calculation of RTTvarSchoch Christian1-1/+1
The calculation of RTTVAR involves the subtraction of two unsigned numbers which may causes rollover and results in very high values of RTTVAR when RTT > SRTT. With this patch it is possible to set RTOmin = 1 to get the minimum of RTO at 4 times the clock granularity. Change Notes: v2) *Replaced abs() by abs64() and long by __s64, changed patch description. Signed-off-by: Christian Schoch <e0326715@student.tuwien.ac.at> CC: Vlad Yasevich <vyasevich@gmail.com> CC: Sridhar Samudrala <sri@us.ibm.com> CC: Neil Horman <nhorman@tuxdriver.com> CC: linux-sctp@vger.kernel.org Acked-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-28sctp: fix -ENOMEM result with invalid user space pointer in sendto() syscallTommi Rantala2-6/+11
Consider the following program, that sets the second argument to the sendto() syscall incorrectly: #include <string.h> #include <arpa/inet.h> #include <sys/socket.h> int main(void) { int fd; struct sockaddr_in sa; fd = socket(AF_INET, SOCK_STREAM, 132 /*IPPROTO_SCTP*/); if (fd < 0) return 1; memset(&sa, 0, sizeof(sa)); sa.sin_family = AF_INET; sa.sin_addr.s_addr = inet_addr("127.0.0.1"); sa.sin_port = htons(11111); sendto(fd, NULL, 1, 0, (struct sockaddr *)&sa, sizeof(sa)); return 0; } We get -ENOMEM: $ strace -e sendto ./demo sendto(3, NULL, 1, 0, {sa_family=AF_INET, sin_port=htons(11111), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 ENOMEM (Cannot allocate memory) Propagate the error code from sctp_user_addto_chunk(), so that we will tell user space what actually went wrong: $ strace -e sendto ./demo sendto(3, NULL, 1, 0, {sa_family=AF_INET, sin_port=htons(11111), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 EFAULT (Bad address) Noticed while running Trinity (the syscall fuzzer). Signed-off-by: Tommi Rantala <tt.rantala@gmail.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-28sctp: fix memory leak in sctp_datamsg_from_user() when copy from user space ↵Tommi Rantala1-2/+5
fails Trinity (the syscall fuzzer) discovered a memory leak in SCTP, reproducible e.g. with the sendto() syscall by passing invalid user space pointer in the second argument: #include <string.h> #include <arpa/inet.h> #include <sys/socket.h> int main(void) { int fd; struct sockaddr_in sa; fd = socket(AF_INET, SOCK_STREAM, 132 /*IPPROTO_SCTP*/); if (fd < 0) return 1; memset(&sa, 0, sizeof(sa)); sa.sin_family = AF_INET; sa.sin_addr.s_addr = inet_addr("127.0.0.1"); sa.sin_port = htons(11111); sendto(fd, NULL, 1, 0, (struct sockaddr *)&sa, sizeof(sa)); return 0; } As far as I can tell, the leak has been around since ~2003. Signed-off-by: Tommi Rantala <tt.rantala@gmail.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-20sctp: send abort chunk when max_retrans exceededNeil Horman2-1/+27
In the event that an association exceeds its max_retrans attempts, we should send an ABORT chunk indicating that we are closing the assocation as a result. Because of the nature of the error, its unlikely to be received, but its a nice clean way to close the association if it does make it through, and it will give anyone watching via tcpdump a clue as to what happened. Change notes: v2) * Removed erroneous changes from sctp_make_violation_parmlen Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: Vlad Yasevich <vyasevich@gmail.com> CC: "David S. Miller" <davem@davemloft.net> CC: linux-sctp@vger.kernel.org Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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