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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2018-11-0660-563/+653
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) Handle errors mid-stream of an all dump, from Alexey Kodanev. 2) Fix build of openvswitch with certain combinations of netfilter options, from Arnd Bergmann. 3) Fix interactions between GSO and BQL, from Eric Dumazet. 4) Don't put a '/' in RTL8201F's sysfs file name, from Holger Hoffstätte. 5) S390 qeth driver fixes from Julian Wiedmann. 6) Allow ipv6 link local addresses for netconsole when both source and destination are link local, from Matwey V. Kornilov. 7) Fix the BPF program address seen in /proc/kallsyms, from Song Liu. 8) Initialize mutex before use in dsa microchip driver, from Tristram Ha. 9) Out-of-bounds access in hns3, from Yunsheng Lin. 10) Various netfilter fixes from Stefano Brivio, Jozsef Kadlecsik, Jiri Slaby, Florian Westphal, Eric Westbrook, Andrey Ryabinin, and Pablo Neira Ayuso. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (50 commits) net: alx: make alx_drv_name static net: bpfilter: fix iptables failure if bpfilter_umh is disabled sock_diag: fix autoloading of the raw_diag module net: core: netpoll: Enable netconsole IPv6 link local address ipv6: properly check return value in inet6_dump_all() rtnetlink: restore handling of dumpit return value in rtnl_dump_all() net/ipv6: Move anycast init/cleanup functions out of CONFIG_PROC_FS bonding/802.3ad: fix link_failure_count tracking net: phy: realtek: fix RTL8201F sysfs name sctp: define SCTP_SS_DEFAULT for Stream schedulers sctp: fix strchange_flags name for Stream Change Event mlxsw: spectrum: Fix IP2ME CPU policer configuration openvswitch: fix linking without CONFIG_NF_CONNTRACK_LABELS qed: fix link config error handling net: hns3: Fix for out-of-bounds access when setting pfc back pressure net/mlx4_en: use __netdev_tx_sent_queue() net: do not abort bulk send on BQL status net: bql: add __netdev_tx_sent_queue() s390/qeth: report 25Gbit link speed s390/qeth: sanitize ARP requests ...
| * Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller2018-11-0522-247/+200
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains the first batch of Netfilter fixes for your net tree: 1) Fix splat with IPv6 defragmenting locally generated fragments, from Florian Westphal. 2) Fix Incorrect check for missing attribute in nft_osf. 3) Missing INT_MIN & INT_MAX definition for netfilter bridge uapi header, from Jiri Slaby. 4) Revert map lookup in nft_numgen, this is already possible with the existing infrastructure without this extension. 5) Fix wrong listing of set reference counter, make counter synchronous again, from Stefano Brivio. 6) Fix CIDR 0 in hash:net,port,net, from Eric Westbrook. 7) Fix allocation failure with large set, use kvcalloc(). From Andrey Ryabinin. 8) No need to disable BH when fetch ip set comment, patch from Jozsef Kadlecsik. 9) Sanity check for valid sysfs entry in xt_IDLETIMER, from Taehee Yoo. 10) Fix suspicious rcu usage via ip_set() macro at netlink dump, from Jozsef Kadlecsik. 11) Fix setting default timeout via nfnetlink_cttimeout, this comes with preparation patch to add nf_{tcp,udp,...}_pernet() helper. 12) Allow ebtables table nat to be of filter type via nft_compat. From Florian Westphal. 13) Incorrect calculation of next bucket in early_drop, do no bump hash value, update bucket counter instead. From Vasily Khoruzhick. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * netfilter: conntrack: fix calculation of next bucket number in early_dropVasily Khoruzhick2018-11-031-5/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If there's no entry to drop in bucket that corresponds to the hash, early_drop() should look for it in other buckets. But since it increments hash instead of bucket number, it actually looks in the same bucket 8 times: hsize is 16k by default (14 bits) and hash is 32-bit value, so reciprocal_scale(hash, hsize) returns the same value for hash..hash+7 in most cases. Fix it by increasing bucket number instead of hash and rename _hash to bucket to avoid future confusion. Fixes: 3e86638e9a0b ("netfilter: conntrack: consider ct netns in early_drop logic") Cc: <stable@vger.kernel.org> # v4.7+ Signed-off-by: Vasily Khoruzhick <vasilykh@arista.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: nft_compat: ebtables 'nat' table is normal chain typeFlorian Westphal2018-11-031-9/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unlike ip(6)tables, the ebtables nat table has no special properties. This bug causes 'ebtables -A' to fail when using a target such as 'snat' (ebt_snat target sets ".table = "nat"'). Targets that have no table restrictions work fine. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: nfnetlink_cttimeout: pass default timeout policy to obj_to_nlattrPablo Neira Ayuso2018-11-031-7/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Otherwise, we hit a NULL pointer deference since handlers always assume default timeout policy is passed. netlink: 24 bytes leftover after parsing attributes in process `syz-executor2'. kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 9575 Comm: syz-executor1 Not tainted 4.19.0+ #312 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:icmp_timeout_obj_to_nlattr+0x77/0x170 net/netfilter/nf_conntrack_proto_icmp.c:297 Fixes: c779e849608a ("netfilter: conntrack: remove get_timeout() indirection") Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: conntrack: add nf_{tcp,udp,sctp,icmp,dccp,icmpv6,generic}_pernet()Pablo Neira Ayuso2018-11-038-59/+63
| | | | | | | | | | | | | | | | | | | | | Expose these functions to access conntrack protocol tracker netns area, nfnetlink_cttimeout needs this. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: ipset: Fix calling ip_set() macro at dumpingJozsef Kadlecsik2018-11-031-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ip_set() macro is called when either ip_set_ref_lock held only or no lock/nfnl mutex is held at dumping. Take this into account properly. Also, use Pablo's suggestion to use rcu_dereference_raw(), the ref_netlink protects the set. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: xt_IDLETIMER: add sysfs filename checking routineTaehee Yoo2018-11-031-0/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When IDLETIMER rule is added, sysfs file is created under /sys/class/xt_idletimer/timers/ But some label name shouldn't be used. ".", "..", "power", "uevent", "subsystem", etc... So that sysfs filename checking routine is needed. test commands: %iptables -I INPUT -j IDLETIMER --timeout 1 --label "power" splat looks like: [95765.423132] sysfs: cannot create duplicate filename '/devices/virtual/xt_idletimer/timers/power' [95765.433418] CPU: 0 PID: 8446 Comm: iptables Not tainted 4.19.0-rc6+ #20 [95765.449755] Call Trace: [95765.449755] dump_stack+0xc9/0x16b [95765.449755] ? show_regs_print_info+0x5/0x5 [95765.449755] sysfs_warn_dup+0x74/0x90 [95765.449755] sysfs_add_file_mode_ns+0x352/0x500 [95765.449755] sysfs_create_file_ns+0x179/0x270 [95765.449755] ? sysfs_add_file_mode_ns+0x500/0x500 [95765.449755] ? idletimer_tg_checkentry+0x3e5/0xb1b [xt_IDLETIMER] [95765.449755] ? rcu_read_lock_sched_held+0x114/0x130 [95765.449755] ? __kmalloc_track_caller+0x211/0x2b0 [95765.449755] ? memcpy+0x34/0x50 [95765.449755] idletimer_tg_checkentry+0x4e2/0xb1b [xt_IDLETIMER] [ ... ] Fixes: 0902b469bd25 ("netfilter: xtables: idletimer target implementation") Signed-off-by: Taehee Yoo <ap420073@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: ipset: Correct rcu_dereference() call in ip_set_put_comment()Jozsef Kadlecsik2018-11-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | The function is called when rcu_read_lock() is held and not when rcu_read_lock_bh() is held. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: ipset: fix ip_set_list allocation failureAndrey Ryabinin2018-11-011-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ip_set_create() and ip_set_net_init() attempt to allocate physically contiguous memory for ip_set_list. If memory is fragmented, the allocations could easily fail: vzctl: page allocation failure: order:7, mode:0xc0d0 Call Trace: dump_stack+0x19/0x1b warn_alloc_failed+0x110/0x180 __alloc_pages_nodemask+0x7bf/0xc60 alloc_pages_current+0x98/0x110 kmalloc_order+0x18/0x40 kmalloc_order_trace+0x26/0xa0 __kmalloc+0x279/0x290 ip_set_net_init+0x4b/0x90 [ip_set] ops_init+0x3b/0xb0 setup_net+0xbb/0x170 copy_net_ns+0xf1/0x1c0 create_new_namespaces+0xf9/0x180 copy_namespaces+0x8e/0xd0 copy_process+0xb61/0x1a00 do_fork+0x91/0x320 Use kvcalloc() to fallback to 0-order allocations if high order page isn't available. Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: ipset: actually allow allowable CIDR 0 in hash:net,port,netEric Westbrook2018-11-011-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow /0 as advertised for hash:net,port,net sets. For "hash:net,port,net", ipset(8) says that "either subnet is permitted to be a /0 should you wish to match port between all destinations." Make that statement true. Before: # ipset create cidrzero hash:net,port,net # ipset add cidrzero 0.0.0.0/0,12345,0.0.0.0/0 ipset v6.34: The value of the CIDR parameter of the IP address is invalid # ipset create cidrzero6 hash:net,port,net family inet6 # ipset add cidrzero6 ::/0,12345,::/0 ipset v6.34: The value of the CIDR parameter of the IP address is invalid After: # ipset create cidrzero hash:net,port,net # ipset add cidrzero 0.0.0.0/0,12345,0.0.0.0/0 # ipset test cidrzero 192.168.205.129,12345,172.16.205.129 192.168.205.129,tcp:12345,172.16.205.129 is in set cidrzero. # ipset create cidrzero6 hash:net,port,net family inet6 # ipset add cidrzero6 ::/0,12345,::/0 # ipset test cidrzero6 fe80::1,12345,ff00::1 fe80::1,tcp:12345,ff00::1 is in set cidrzero6. See also: https://bugzilla.kernel.org/show_bug.cgi?id=200897 https://github.com/ewestbrook/linux/commit/df7ff6efb0934ab6acc11f003ff1a7580d6c1d9c Signed-off-by: Eric Westbrook <linux@westbrook.io> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: ipset: list:set: Decrease refcount synchronously on deletion and ↵Stefano Brivio2018-11-013-19/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | replace Commit 45040978c899 ("netfilter: ipset: Fix set:list type crash when flush/dump set in parallel") postponed decreasing set reference counters to the RCU callback. An 'ipset del' command can terminate before the RCU grace period is elapsed, and if sets are listed before then, the reference counter shown in userspace will be wrong: # ipset create h hash:ip; ipset create l list:set; ipset add l # ipset del l h; ipset list h Name: h Type: hash:ip Revision: 4 Header: family inet hashsize 1024 maxelem 65536 Size in memory: 88 References: 1 Number of entries: 0 Members: # sleep 1; ipset list h Name: h Type: hash:ip Revision: 4 Header: family inet hashsize 1024 maxelem 65536 Size in memory: 88 References: 0 Number of entries: 0 Members: Fix this by making the reference count update synchronous again. As a result, when sets are listed, ip_set_name_byindex() might now fetch a set whose reference count is already zero. Instead of relying on the reference count to protect against concurrent set renaming, grab ip_set_ref_lock as reader and copy the name, while holding the same lock in ip_set_rename() as writer instead. Reported-by: Li Shuang <shuali@redhat.com> Fixes: 45040978c899 ("netfilter: ipset: Fix set:list type crash when flush/dump set in parallel") Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * Revert "netfilter: nft_numgen: add map lookups for numgen random operations"Pablo Neira Ayuso2018-10-292-129/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Laura found a better way to do this from userspace without requiring kernel infrastructure, revert this. Fixes: 978d8f9055c3 ("netfilter: nft_numgen: add map lookups for numgen random operations") Signed-off-by: Laura Garcia Liebana <nevola@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: bridge: define INT_MIN & INT_MAX in userspaceJiri Slaby2018-10-251-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With 4.19, programs like ebtables fail to build when they include "linux/netfilter_bridge.h". It is caused by commit 94276fa8a2a4 which added a use of INT_MIN and INT_MAX to the header: : In file included from /usr/include/linux/netfilter_bridge/ebtables.h:18, : from include/ebtables_u.h:28, : from communication.c:23: : /usr/include/linux/netfilter_bridge.h:30:20: error: 'INT_MIN' undeclared here (not in a function) : NF_BR_PRI_FIRST = INT_MIN, : ^~~~~~~ Define these constants by including "limits.h" when !__KERNEL__ (the same way as for other netfilter_* headers). Fixes: 94276fa8a2a4 ("netfilter: bridge: Expose nf_tables bridge hook priorities through uapi") Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Máté Eckl <ecklm94@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: nft_osf: check if attribute is presentPablo Neira Ayuso2018-10-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | If the attribute is not sent, eg. old libnftnl binary, then tb[NFTA_OSF_TTL] is NULL and kernel crashes from the _init path. Fixes: a218dc82f0b5 ("netfilter: nft_osf: Add ttl option support") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: ipv6: fix oops when defragmenting locally generated fragmentsFlorian Westphal2018-10-251-4/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unlike ipv4 and normal ipv6 defrag, netfilter ipv6 defragmentation did not save/restore skb->dst. This causes oops when handling locally generated ipv6 fragments, as output path needs a valid dst. Reported-by: Maciej Żenczykowski <zenczykowski@gmail.com> Fixes: 84379c9afe01 ("netfilter: ipv6: nf_defrag: drop skb dst before queueing") Signed-off-by: Florian Westphal <fw@strlen.de> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * | net: alx: make alx_drv_name staticRasmus Villemoes2018-11-052-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | alx_drv_name is not used outside main.c, so there's no reason for it to have external linkage. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: bpfilter: fix iptables failure if bpfilter_umh is disabledTaehee Yoo2018-11-051-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When iptables command is executed, ip_{set/get}sockopt() try to upload bpfilter.ko if bpfilter is enabled. if it couldn't find bpfilter.ko, command is failed. bpfilter.ko is generated if CONFIG_BPFILTER_UMH is enabled. ip_{set/get}sockopt() only checks CONFIG_BPFILTER. So that if CONFIG_BPFILTER is enabled and CONFIG_BPFILTER_UMH is disabled, iptables command is always failed. test config: CONFIG_BPFILTER=y # CONFIG_BPFILTER_UMH is not set test command: %iptables -L iptables: No chain/target/match by that name. Fixes: d2ba09c17a06 ("net: add skeleton of bpfilter kernel module") Signed-off-by: Taehee Yoo <ap420073@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sock_diag: fix autoloading of the raw_diag moduleAndrei Vagin2018-11-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IPPROTO_RAW isn't registred as an inet protocol, so inet_protos[protocol] is always NULL for it. Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Xin Long <lucien.xin@gmail.com> Fixes: bf2ae2e4bf93 ("sock_diag: request _diag module only when the family or proto has been registered") Signed-off-by: Andrei Vagin <avagin@gmail.com> Reviewed-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: core: netpoll: Enable netconsole IPv6 link local addressMatwey V. Kornilov2018-11-051-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is no reason to discard using source link local address when remote netconsole IPv6 address is set to be link local one. The patch allows administrators to use IPv6 netconsole without explicitly configuring source address: netconsole=@/,@fe80::5054:ff:fe2f:6012/ Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | ipv6: properly check return value in inet6_dump_all()Alexey Kodanev2018-11-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure we call fib6_dump_end() if it happens that skb->len is zero. rtnl_dump_all() can reset cb->args on the next loop iteration there. Fixes: 08e814c9e8eb ("net/ipv6: Bail early if user only wants cloned entries") Fixes: ae677bbb4441 ("net: Don't return invalid table id error when dumping all families") Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | rtnetlink: restore handling of dumpit return value in rtnl_dump_all()Alexey Kodanev2018-11-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For non-zero return from dumpit() we should break the loop in rtnl_dump_all() and return the result. Otherwise, e.g., we could get the memory leak in inet6_dump_fib() [1]. The pointer to the allocated struct fib6_walker there (saved in cb->args) can be lost, reset on the next iteration. Fix it by partially restoring the previous behavior before commit c63586dc9b3e ("net: rtnl_dump_all needs to propagate error from dumpit function"). The returned error from dumpit() is still passed further. [1]: unreferenced object 0xffff88001322a200 (size 96): comm "sshd", pid 1484, jiffies 4296032768 (age 1432.542s) hex dump (first 32 bytes): 00 01 00 00 00 00 ad de 00 02 00 00 00 00 ad de ................ 18 09 41 36 00 88 ff ff 18 09 41 36 00 88 ff ff ..A6......A6.... backtrace: [<0000000095846b39>] kmem_cache_alloc_trace+0x151/0x220 [<000000007d12709f>] inet6_dump_fib+0x68d/0x940 [<000000002775a316>] rtnl_dump_all+0x1d9/0x2d0 [<00000000d7cd302b>] netlink_dump+0x945/0x11a0 [<000000002f43485f>] __netlink_dump_start+0x55d/0x800 [<00000000f76bbeec>] rtnetlink_rcv_msg+0x4fa/0xa00 [<000000009b5761f3>] netlink_rcv_skb+0x29c/0x420 [<0000000087a1dae1>] rtnetlink_rcv+0x15/0x20 [<00000000691b703b>] netlink_unicast+0x4e3/0x6c0 [<00000000b5be0204>] netlink_sendmsg+0x7f2/0xba0 [<0000000096d2aa60>] sock_sendmsg+0xba/0xf0 [<000000008c1b786f>] __sys_sendto+0x1e4/0x330 [<0000000019587b3f>] __x64_sys_sendto+0xe1/0x1a0 [<00000000071f4d56>] do_syscall_64+0x9f/0x300 [<000000002737577f>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [<0000000057587684>] 0xffffffffffffffff Fixes: c63586dc9b3e ("net: rtnl_dump_all needs to propagate error from dumpit function") Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net/ipv6: Move anycast init/cleanup functions out of CONFIG_PROC_FSJeff Barnhill2018-11-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Move the anycast.c init and cleanup functions which were inadvertently added inside the CONFIG_PROC_FS definition. Fixes: 2384d02520ff ("net/ipv6: Add anycast addresses to a global hashtable") Signed-off-by: Jeff Barnhill <0xeffeff@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | bonding/802.3ad: fix link_failure_count trackingJarod Wilson2018-11-041-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 4d2c0cda07448ea6980f00102dc3964eb25e241c set slave->link to BOND_LINK_DOWN for 802.3ad bonds whenever invalid speed/duplex values were read, to fix a problem with slaves getting into weird states, but in the process, broke tracking of link failures, as going straight to BOND_LINK_DOWN when a link is indeed down (cable pulled, switch rebooted) means we broke out of bond_miimon_inspect()'s BOND_LINK_DOWN case because !link_state was already true, we never incremented commit, and never got a chance to call bond_miimon_commit(), where slave->link_failure_count would be incremented. I believe the simple fix here is to mark the slave as BOND_LINK_FAIL, and let bond_miimon_inspect() transition the link from _FAIL to either _UP or _DOWN, and in the latter case, we now get proper incrementing of link_failure_count again. Fixes: 4d2c0cda0744 ("bonding: speed/duplex update at NETDEV_UP event") CC: Mahesh Bandewar <maheshb@google.com> CC: David S. Miller <davem@davemloft.net> CC: netdev@vger.kernel.org CC: stable@vger.kernel.org Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: phy: realtek: fix RTL8201F sysfs nameHolger Hoffstätte2018-11-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since 4.19 the following error in sysfs has appeared when using the r8169 NIC driver: $cd /sys/module/realtek/drivers $ls -l ls: cannot access 'mdio_bus:RTL8201F 10/100Mbps Ethernet': No such file or directory [..garbled dir entries follow..] Apparently the forward slash in "10/100Mbps Ethernet" is interpreted as directory separator that leads nowhere, and was introduced in commit 513588dd44b ("net: phy: realtek: add RTL8201F phy-id and functions"). Fix this by removing the offending slash in the driver name. Other drivers in net/phy seem to have the same problem, but I cannot test/verify them. Fixes: 513588dd44b ("net: phy: realtek: add RTL8201F phy-id and functions") Signed-off-by: Holger Hoffstätte <holger@applied-asynchrony.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sctp: define SCTP_SS_DEFAULT for Stream schedulersXin Long2018-11-032-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to rfc8260#section-4.3.2, SCTP_SS_DEFAULT is required to defined as SCTP_SS_FCFS or SCTP_SS_RR. SCTP_SS_FCFS is used for SCTP_SS_DEFAULT's value in this patch. Fixes: 5bbbbe32a431 ("sctp: introduce stream scheduler foundations") Reported-by: Jianwen Ji <jiji@redhat.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sctp: fix strchange_flags name for Stream Change EventXin Long2018-11-031-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As defined in rfc6525#section-6.1.3, SCTP_STREAM_CHANGE_DENIED and SCTP_STREAM_CHANGE_FAILED should be used instead of SCTP_ASSOC_CHANGE_DENIED and SCTP_ASSOC_CHANGE_FAILED. To keep the compatibility, fix it by adding two macros. Fixes: b444153fb5a6 ("sctp: add support for generating add stream change event notification") Reported-by: Jianwen Ji <jiji@redhat.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller2018-11-032-13/+26
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Daniel Borkmann says: ==================== pull-request: bpf 2018-11-03 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) Fix BPF prog kallsyms and bpf_prog_get_info_by_fd() jited address export to not use page start but actual start instead to work correctly with profiling e.g. finding hot instructions from stack traces. Also fix latter with regards to dumping address and jited len for !multi prog, from Song. 2) Fix bpf_prog_get_info_by_fd() for !root to zero info.nr_jited_func_lens instead of leaving the user provided length, from Daniel. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | bpf: fix bpf_prog_get_info_by_fd to return 0 func_lens for unprivDaniel Borkmann2018-11-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While dbecd7388476 ("bpf: get kernel symbol addresses via syscall") zeroed info.nr_jited_ksyms in bpf_prog_get_info_by_fd() for queries from unprivileged users, commit 815581c11cc2 ("bpf: get JITed image lengths of functions via syscall") forgot about doing so and therefore returns the #elems of the user set up buffer which is incorrect. It also needs to indicate a info.nr_jited_func_lens of zero. Fixes: 815581c11cc2 ("bpf: get JITed image lengths of functions via syscall") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Sandipan Das <sandipan@linux.vnet.ibm.com> Cc: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| | * | Merge branch 'bpf-accurate-prog-addr'Daniel Borkmann2018-11-022-13/+25
| | |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Song Liu says: ==================== Changes v1 -> v2: 1. Added main program length to bpf_prog_info->jited_fun_lens (3/3). 2. Updated commit message of 1/3 and 2/3 with more background about the address masking, and why it is still save after the changes. 3. Replace "ulong" with "unsigned long". This set improves bpf program address showed in /proc/kallsyms and in bpf_prog_info. First, real program address is showed instead of page address. Second, when there is no subprogram, bpf_prog_info->jited_ksyms and bpf_prog_info->jited_fun_lens returns the main prog address and length. ==================== Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
| | | * | bpf: show main program address and length in bpf_prog_infoSong Liu2018-11-021-9/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, when there is no subprog (prog->aux->func_cnt == 0), bpf_prog_info does not return any jited_ksyms or jited_func_lens. This patch adds main program address (prog->bpf_func) and main program length (prog->jited_len) to bpf_prog_info. Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
| | | * | bpf: show real jited address in bpf_prog_info->jited_ksymsSong Liu2018-11-021-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, jited_ksyms in bpf_prog_info shows page addresses of jited bpf program. The main reason here is to not expose randomized start address. However, this is not ideal for detailed profiling (find hot instructions from stack traces). This patch replaces the page address with real prog start address. This change is OK because bpf_prog_get_info_by_fd() is only available to root. Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
| | | * | bpf: show real jited prog address in /proc/kallsymsSong Liu2018-11-021-3/+1
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, /proc/kallsyms shows page address of jited bpf program. The main reason here is to not expose randomized start address. However, This is not ideal for detailed profiling (find hot instructions from stack traces). This patch replaces the page address with real prog start address. This change is OK because these addresses are still protected by sysctl kptr_restrict (see kallsyms_show_value()), and only programs loaded by root are added to kallsyms (see bpf_prog_kallsyms_add()). Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
| * | | mlxsw: spectrum: Fix IP2ME CPU policer configurationShalom Toledo2018-11-031-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The CPU policer used to police packets being trapped via a local route (IP2ME) was incorrectly configured to police based on bytes per second instead of packets per second. Change the policer to police based on packets per second and avoid packet loss under certain circumstances. Fixes: 9148e7cf73ce ("mlxsw: spectrum: Add policers for trap groups") Signed-off-by: Shalom Toledo <shalomt@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | openvswitch: fix linking without CONFIG_NF_CONNTRACK_LABELSArnd Bergmann2018-11-031-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When CONFIG_CC_OPTIMIZE_FOR_DEBUGGING is enabled, the compiler fails to optimize out a dead code path, which leads to a link failure: net/openvswitch/conntrack.o: In function `ovs_ct_set_labels': conntrack.c:(.text+0x2e60): undefined reference to `nf_connlabels_replace' In this configuration, we can take a shortcut, and completely remove the contrack label code. This may also help the regular optimization. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | qed: fix link config error handlingArnd Bergmann2018-11-031-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc-8 notices that qed_mcp_get_transceiver_data() may fail to return a result to the caller: drivers/net/ethernet/qlogic/qed/qed_mcp.c: In function 'qed_mcp_trans_speed_mask': drivers/net/ethernet/qlogic/qed/qed_mcp.c:1955:2: error: 'transceiver_type' may be used uninitialized in this function [-Werror=maybe-uninitialized] When an error is returned by qed_mcp_get_transceiver_data(), we should propagate that to the caller of qed_mcp_trans_speed_mask() rather than continuing with uninitialized data. Fixes: c56a8be7e7aa ("qed: Add supported link and advertise link to display in ethtool.") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | net: hns3: Fix for out-of-bounds access when setting pfc back pressureYunsheng Lin2018-11-031-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The vport should be initialized to hdev->vport for each bp group, otherwise it will cause out-of-bounds access and bp setting not correct problem. [ 35.254124] BUG: KASAN: slab-out-of-bounds in hclge_pause_setup_hw+0x2a0/0x3f8 [hclge] [ 35.254126] Read of size 2 at addr ffff803b6651581a by task kworker/0:1/14 [ 35.254132] CPU: 0 PID: 14 Comm: kworker/0:1 Not tainted 4.19.0-rc7-hulk+ #85 [ 35.254133] Hardware name: Huawei D06/D06, BIOS Hisilicon D06 UEFI RC0 - B052 (V0.52) 09/14/2018 [ 35.254141] Workqueue: events work_for_cpu_fn [ 35.254144] Call trace: [ 35.254147] dump_backtrace+0x0/0x2f0 [ 35.254149] show_stack+0x24/0x30 [ 35.254154] dump_stack+0x110/0x184 [ 35.254157] print_address_description+0x168/0x2b0 [ 35.254160] kasan_report+0x184/0x310 [ 35.254162] __asan_load2+0x7c/0xa0 [ 35.254170] hclge_pause_setup_hw+0x2a0/0x3f8 [hclge] [ 35.254177] hclge_tm_init_hw+0x794/0x9f0 [hclge] [ 35.254184] hclge_tm_schd_init+0x48/0x58 [hclge] [ 35.254191] hclge_init_ae_dev+0x778/0x1168 [hclge] [ 35.254196] hnae3_register_ae_dev+0x14c/0x298 [hnae3] [ 35.254206] hns3_probe+0x88/0xa8 [hns3] [ 35.254210] local_pci_probe+0x7c/0xf0 [ 35.254212] work_for_cpu_fn+0x34/0x50 [ 35.254214] process_one_work+0x4d4/0xa38 [ 35.254216] worker_thread+0x55c/0x8d8 [ 35.254219] kthread+0x1b0/0x1b8 [ 35.254222] ret_from_fork+0x10/0x1c [ 35.254224] The buggy address belongs to the page: [ 35.254228] page:ffff7e00ed994400 count:1 mapcount:0 mapping:0000000000000000 index:0x0 compound_mapcount: 0 [ 35.273835] flags: 0xfffff8000008000(head) [ 35.282007] raw: 0fffff8000008000 dead000000000100 dead000000000200 0000000000000000 [ 35.282010] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 35.282012] page dumped because: kasan: bad access detected [ 35.282014] Memory state around the buggy address: [ 35.282017] ffff803b66515700: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 35.282019] ffff803b66515780: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 35.282021] >ffff803b66515800: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 35.282022] ^ [ 35.282024] ffff803b66515880: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 35.282026] ffff803b66515900: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 35.282028] ================================================================== [ 35.282029] Disabling lock debugging due to kernel taint [ 35.282747] hclge driver initialization finished. Fixes: 67bf2541f4b9 ("net: hns3: Fixes the back pressure setting when sriov is enabled") Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | Merge branch 'net-bql-better-deal-with-GSO'David S. Miller2018-11-033-3/+25
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Eric Dumazet says: ==================== net: bql: better deal with GSO While BQL bulk dequeue works well for TSO packets, it is not very efficient as soon as GSO is involved. On a GSO only workload (UDP or TCP), this patch series can save about 8 % of cpu cycles on a 40Gbit mlx4 NIC, by keeping optimal batching, and avoiding expensive doorbells, qdisc requeues and reschedules. This patch series : - Add __netdev_tx_sent_queue() so that drivers can implement efficient BQL and xmit_more support. - Implement a work around in dev_hard_start_xmit() for drivers not using __netdev_tx_sent_queue() - changes mlx4 to use __netdev_tx_sent_queue() v2: Tariq and Willem feedback addressed. added __netdev_tx_sent_queue() (Willem suggestion) ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | net/mlx4_en: use __netdev_tx_sent_queue()Eric Dumazet2018-11-031-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | doorbell only depends on xmit_more and netif_tx_queue_stopped() Using __netdev_tx_sent_queue() avoids messing with BQL stop flag, and is more generic. This patch increases performance on GSO workload by keeping doorbells to the minimum required. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Tariq Toukan <tariqt@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | net: do not abort bulk send on BQL statusEric Dumazet2018-11-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Before calling dev_hard_start_xmit(), upper layers tried to cook optimal skb list based on BQL budget. Problem is that GSO packets can end up comsuming more than the BQL budget. Breaking the loop is not useful, since requeued packets are ahead of any packets still in the qdisc. It is also more expensive, since next TX completion will push these packets later, while skbs are not in cpu caches. It is also a behavior difference with TSO packets, that can break the BQL limit by a large amount. Note that drivers should use __netdev_tx_sent_queue() in order to have optimal xmit_more support, and avoid useless atomic operations as shown in the following patch. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | net: bql: add __netdev_tx_sent_queue()Eric Dumazet2018-11-031-0/+20
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When qdisc_run() tries to use BQL budget to bulk-dequeue a batch of packets, GSO can later transform this list in another list of skbs, and each skb is sent to device ndo_start_xmit(), one at a time, with skb->xmit_more being set to one but for last skb. Problem is that very often, BQL limit is hit in the middle of the packet train, forcing dev_hard_start_xmit() to stop the bulk send and requeue the end of the list. BQL role is to avoid head of line blocking, making sure a qdisc can deliver high priority packets before low priority ones. But there is no way requeued packets can be bypassed by fresh packets in the qdisc. Aborting the bulk send increases TX softirqs, and hot cache lines (after skb_segment()) are wasted. Note that for TSO packets, we never split a packet in the middle because of BQL limit being hit. Drivers should be able to update BQL counters without flipping/caring about BQL status, if the current skb has xmit_more set. Upper layers are ultimately responsible to stop sending another packet train when BQL limit is hit. Code template in a driver might look like the following : send_doorbell = __netdev_tx_sent_queue(tx_queue, nr_bytes, skb->xmit_more); Note that __netdev_tx_sent_queue() use is not mandatory, since following patch will change dev_hard_start_xmit() to not care about BQL status. But it is highly recommended so that xmit_more full benefits can be reached (less doorbells sent, and less atomic operations as well) Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | Merge branch 's390-qeth-fixes'David S. Miller2018-11-035-242/+207
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Julian Wiedmann says: ==================== s390/qeth: fixes 2018-11-02 please apply one round of qeth fixes for -net. Patch 1 is rather large and removes a use-after-free hazard from many of our debug trace entries. Patch 2 is yet another fix-up for the L3 subdriver's new IP address management code. Patch 3 and 4 resolve some fallout from the recent changes wrt how/when qeth allocates its net_device. Patch 5 makes sure we don't set reserved bits when building HW commands from user-provided data. And finally, patch 6 allows ethtool to play nice with new HW. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | s390/qeth: report 25Gbit link speedJulian Wiedmann2018-11-032-2/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds the various identifiers for 25Gbit cards, and wires them up into sysfs and ethtool. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | s390/qeth: sanitize ARP requestsJulian Wiedmann2018-11-034-79/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ARP_{ADD,REMOVE}_ENTRY cmd structs contain reserved fields. Introduce a common helper that doesn't raw-copy the user-provided data into the cmd, but only sets those fields that are strictly needed for the command. This also sets the correct command length for ARP_REMOVE_ENTRY. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | s390/qeth: fix initial operstateJulian Wiedmann2018-11-034-10/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Setting the carrier 'on' for an unregistered netdevice doesn't update its operstate. Fix this by delaying the update until the netdevice has been registered. Fixes: 91cc98f51e3d ("s390/qeth: remove duplicated carrier state tracking") Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | s390/qeth: unregister netdevice only when registeredJulian Wiedmann2018-11-033-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | qeth only registers its netdevice when the qeth device is first set online. Thus a device that has never been set online will trigger a WARN ("network todo 'hsi%d' but state 0") in unregister_netdev() when removed. Fix this by protecting the unregister step, just like we already protect against repeated registering of the netdevice. Fixes: d3d1b205e89f ("s390/qeth: allocate netdevice early") Reported-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | s390/qeth: fix HiperSockets snifferJulian Wiedmann2018-11-031-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sniffing mode for L3 HiperSockets requires that no IP addresses are registered with the HW. The preferred way to achieve this is for userspace to delete all the IPs on the interface. But qeth is expected to also tolerate a configuration where that is not the case, by skipping the IP registration when in sniffer mode. Since commit 5f78e29ceebf ("qeth: optimize IP handling in rx_mode callback") reworked the IP registration logic in the L3 subdriver, this no longer works. When the qeth device is set online, qeth_l3_recover_ip() now unconditionally registers all unicast addresses from our internal IP table. While we could fix this particular problem by skipping qeth_l3_recover_ip() on a sniffer device, the more future-proof change is to skip the IP address registration at the lowest level. This way we a) catch any future code path that attempts to register an IP address without considering the sniffer scenario, and b) continue to build up our internal IP table, so that if sniffer mode is switched off later we can operate just like normal. Fixes: 5f78e29ceebf ("qeth: optimize IP handling in rx_mode callback") Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | s390/qeth: sanitize strings in debug messagesJulian Wiedmann2018-11-034-151/+119
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As Documentation/s390/s390dbf.txt states quite clearly, using any pointer in sprinf-formatted s390dbf debug entries is dangerous. The pointers are dereferenced whenever the trace file is read from. So if the referenced data has a shorter life-time than the trace file, any read operation can result in a use-after-free. So rip out all hazardous use of indirect data, and replace any usage of dev_name() and such by the Bus ID number. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | Merge branch 'net-timeout-fixes-for-GENET-and-SYSTEMPORT'David S. Miller2018-11-032-14/+14
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Florian Fainelli says: ==================== net: timeout fixes for GENET and SYSTEMPORT This patch series fixes occasional transmit timeout around the time the system goes into suspend. GENET and SYSTEMPORT have nearly the same logic in that regard and were both affected in the same way. Please queue up for stable, thanks! ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | net: systemport: Protect stop from timeoutFlorian Fainelli2018-11-031-8/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A timing hazard exists when the network interface is stopped that allows a watchdog timeout to be processed by a separate core in parallel. This creates the potential for the timeout handler to wake the queues while the driver is shutting down, or access registers after their clocks have been removed. The more common case is that the watchdog timeout will produce a warning message which doesn't lead to a crash. The chances of this are greatly increased by the fact that bcm_sysport_netif_stop stops the transmit queues which can easily precipitate a watchdog time- out because of stale trans_start data in the queues. This commit corrects the behavior by ensuring that the watchdog timeout is disabled before enterring bcm_sysport_netif_stop. There are currently only two users of the bcm_sysport_netif_stop function: close and suspend. The close case already handles the issue by exiting the RUNNING state before invoking the driver close service. The suspend case now performs the netif_device_detach to exit the PRESENT state before the call to bcm_sysport_netif_stop rather than after it. These behaviors prevent any future scheduling of the driver timeout service during the window. The netif_tx_stop_all_queues function in bcm_sysport_netif_stop is replaced with netif_tx_disable to ensure synchronization with any transmit or timeout threads that may already be executing on other cores. For symmetry, the netif_device_attach call upon resume is moved to after the call to bcm_sysport_netif_start. Since it wakes the transmit queues it is not necessary to invoke netif_tx_start_all_queues from bcm_sysport_netif_start so it is moved into the driver open service. Fixes: 40755a0fce17 ("net: systemport: add suspend and resume support") Fixes: 80105befdb4b ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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