- 23 Apr, 2020 18 commits
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Tang Bin authored
The function ixp4xx_eth_probe() does not perform sufficient error checking after executing devm_ioremap_resource(), which can result in crashes if a critical error path is encountered. Fixes: f458ac47 ("ARM/net: ixp4xx: Pass ethernet physical base as resource") Signed-off-by:
Zhang Shengju <zhangshengju@cmss.chinamobile.com> Signed-off-by:
Tang Bin <tangbin@cmss.chinamobile.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Vishal Kulkarni authored
In the absence of MC1, the size calculation function cudbg_mem_region_size() was returing wrong MC size and resulted in adapter crash. This patch adds new argument to cudbg_mem_region_size() which will have actual size and returns error to caller in the absence of MC1. Fixes: a1c69520 ("cxgb4: collect MC memory dump") Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>" Signed-off-by:
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David S. Miller authored
Sabrina Dubroca says: ==================== net: vxlan/geneve: use the correct nlattr array for extack The ->validate callbacks for vxlan and geneve have a couple of typos in extack, where the nlattr array for IFLA_* attributes is used instead of the link-specific one. ==================== Signed-off-by: -
Sabrina Dubroca authored
IFLA_GENEVE_* attributes are in the data array, which is correctly used when fetching the value, but not when setting the extended ack. Because IFLA_GENEVE_MAX < IFLA_MAX, we avoid out of bounds array accesses, but we don't provide a pointer to the invalid attribute to userspace. Fixes: a025fb5f ("geneve: Allow configuration of DF behaviour") Signed-off-by:
Sabrina Dubroca <sd@queasysnail.net> Signed-off-by:
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Sabrina Dubroca authored
IFLA_VXLAN_* attributes are in the data array, which is correctly used when fetching the value, but not when setting the extended ack. Because IFLA_VXLAN_MAX < IFLA_MAX, we avoid out of bounds array accesses, but we don't provide a pointer to the invalid attribute to userspace. Fixes: 653ef6a3 ("vxlan: change vxlan_[config_]validate() to use netlink_ext_ack for error reporting") Fixes: b4d30697 ("vxlan: Allow configuration of DF behaviour") Signed-off-by:
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Dan Carpenter authored
The mlxsw_sp_acl_rulei_create() function is supposed to return an error pointer from mlxsw_afa_block_create(). The problem is that these functions both return NULL instead of error pointers. Half the callers expect NULL and half expect error pointers so it could lead to a NULL dereference on failure. This patch changes both of them to return error pointers and changes all the callers which checked for NULL to check for IS_ERR() instead. Fixes: 4cda7d8d ("mlxsw: core: Introduce flexible actions support") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
Ido Schimmel <idosch@mellanox.com> Signed-off-by:
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Baruch Siach authored
The MV_V2_PORT_CTRL_SWRST bit in MV_V2_PORT_CTRL is reserved on 88E2110. Setting SWRST on 88E2110 breaks packets transfer after interface down/up cycle. Fixes: 8f48c2ac ("net: marvell10g: soft-reset the PHY when coming out of low power") Signed-off-by:
Baruch Siach <baruch@tkos.co.il> Signed-off-by:
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David Ahern authored
A user reported [0] hitting the WARN_ON in fib_info_nh: [ 8633.839816] ------------[ cut here ]------------ [ 8633.839819] WARNING: CPU: 0 PID: 1719 at include/net/nexthop.h:251 fib_select_path+0x303/0x381 ... [ 8633.839846] RIP: 0010:fib_select_path+0x303/0x381 ... [ 8633.839848] RSP: 0018:ffffb04d407f7d00 EFLAGS: 00010286 [ 8633.839850] RAX: 0000000000000000 RBX: ffff9460b9897ee8 RCX: 00000000000000fe [ 8633.839851] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 8633.839852] RBP: ffff946076049850 R08: 0000000059263a83 R09: ffff9460840e4000 [ 8633.839853] R10: 0000000000000014 R11: 0000000000000000 R12: ffffb04d407f7dc0 [ 8633.839854] R13: ffffffffa4ce3240 R14: 0000000000000000 R15: ffff9460b7681f60 [ 8633.839857] FS: 00007fcac2e02700(0000) GS:ffff9460bdc00000(0000) knlGS:0000000000000000 [ 8633.839858] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8633.839859] CR2: 00007f27beb77e28 CR3: 0000000077734000 CR4: 00000000000006f0 [ 8633.839867] Call Trace: [ 8633.839871] ip_route_output_key_hash_rcu+0x421/0x890 [ 8633.839873] ip_route_output_key_hash+0x5e/0x80 [ 8633.839876] ip_route_output_flow+0x1a/0x50 [ 8633.839878] __ip4_datagram_connect+0x154/0x310 [ 8633.839880] ip4_datagram_connect+0x28/0x40 [ 8633.839882] __sys_connect+0xd6/0x100 ... The WARN_ON is triggered in fib_select_default which is invoked when there are multiple default routes. Update the function to use fib_info_nhc and convert the nexthop checks to use fib_nh_common. Add test case that covers the affected code path. [0] https://github.com/FRRouting/frr/issues/6089 Fixes: 493ced1a ("ipv4: Allow routes to use nexthop objects") Signed-off-by:David Ahern <dsahern@gmail.com> Signed-off-by:
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Salvatore Bonaccorso authored
The NetLabel Tools project has moved from http://netlabel.sf.net to a GitHub project. Update to directly refer to the new home for the tools. Signed-off-by:
Salvatore Bonaccorso <carnil@debian.org> Acked-by:
Paul Moore <paul@paul-moore.com> Signed-off-by:
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Ioana Ciornei authored
Add myself as another maintainer of dpaa2-eth. Signed-off-by:
Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by:
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Paolo Abeni authored
The data fin flag is set only via a DSS option, but mptcp_incoming_options() copies it unconditionally from the provided RX options. Since we do not clear all the mptcp sock RX options in a socket free/alloc cycle, we can end-up with a stray data_fin value while parsing e.g. MPC packets. That would lead to mapping data corruption and will trigger a few WARN_ON() in the RX path. Instead of adding a costly memset(), fetch the data_fin flag only for DSS packets - when we always explicitly initialize such bit at option parsing time. Fixes: 648ef4b8 ("mptcp: Implement MPTCP receive path") Reviewed-by:
Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
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David Ahern authored
When a qdisc is attached to the VRF device, the packet goes down the ndo xmit function which is setup to send the packet back to the VRF driver which does a lookup to send the packet out. The lookup in the VRF driver is not considering xfrm policies. Change it to use ip6_dst_lookup_flow rather than ip6_route_output. Fixes: 35402e31 ("net: Add IPv6 support to VRF device") Signed-off-by:
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Stephen Hemminger authored
Support for non-root users to send ICMP ECHO requests was added back in Linux 3.0 kernel, but the documentation for the sysctl to enable it has been missing. Signed-off-by:
Stephen Hemminger <stephen@networkplumber.org> Signed-off-by:
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David S. Miller authored
Jere Leppänen says: ==================== sctp: Fix problems with peer restart when in SHUTDOWN-PENDING state and socket is closed These patches are related to the scenario described in commit bdf6fa52 ("sctp: handle association restarts when the socket is closed."). To recap, when our association is in SHUTDOWN-PENDING state and we've closed our one-to-one socket, while the peer crashes without being detected, restarts and reconnects using the same addresses and ports, we start association shutdown. In this case, Cumulative TSN Ack in the SHUTDOWN that we send has always been incorrect. Additionally, bundling of the SHUTDOWN with the COOKIE-ACK was broken by a later commit. This series fixes both of these issues. ==================== Signed-off-by:
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Jere Leppänen authored
When starting shutdown in sctp_sf_do_dupcook_a(), get the value for SHUTDOWN Cumulative TSN Ack from the new association, which is reconstructed from the cookie, instead of the old association, which the peer doesn't have anymore. Otherwise the SHUTDOWN is either ignored or replied to with an ABORT by the peer because CTSN Ack doesn't match the peer's Initial TSN. Fixes: bdf6fa52 ("sctp: handle association restarts when the socket is closed.") Signed-off-by:
Jere Leppänen <jere.leppanen@nokia.com> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
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Jere Leppänen authored
When we start shutdown in sctp_sf_do_dupcook_a(), we want to bundle the SHUTDOWN with the COOKIE-ACK to ensure that the peer receives them at the same time and in the correct order. This bundling was broken by commit 4ff40b86 ("sctp: set chunk transport correctly when it's a new asoc"), which assigns a transport for the COOKIE-ACK, but not for the SHUTDOWN. Fix this by passing a reference to the COOKIE-ACK chunk as an argument to sctp_sf_do_9_2_start_shutdown() and onward to sctp_make_shutdown(). This way the SHUTDOWN chunk is assigned the same transport as the COOKIE-ACK chunk, which allows them to be bundled. In sctp_sf_do_9_2_start_shutdown(), the void *arg parameter was previously unused. Now that we're taking it into use, it must be a valid pointer to a chunk, or NULL. There is only one call site where it's not, in sctp_sf_autoclose_timer_expire(). Fix that too. Fixes: 4ff40b86 ("sctp: set chunk transport correctly when it's a new asoc") Signed-off-by:
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Vladimir Oltean authored
There is no reason to fail the probing of the switch if the MTU couldn't be configured correctly (either the switch port itself, or the host port) for whatever reason. MTU-sized traffic probably won't work, sure, but we can still probably limp on and support some form of communication anyway, which the users would probably appreciate more. Fixes: bfcb8132 ("net: dsa: configure the MTU for switch ports") Reported-by:
Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Eric Dumazet authored
skb->sk does not always point to a full blown socket, we need to use sk_fullsock() before accessing fields which only make sense on full socket. BUG: KASAN: use-after-free in report_sock_error+0x286/0x300 net/sched/sch_etf.c:141 Read of size 1 at addr ffff88805eb9b245 by task syz-executor.5/9630 CPU: 1 PID: 9630 Comm: syz-executor.5 Not tainted 5.7.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xd3/0x315 mm/kasan/report.c:382 __kasan_report.cold+0x35/0x4d mm/kasan/report.c:511 kasan_report+0x33/0x50 mm/kasan/common.c:625 report_sock_error+0x286/0x300 net/sched/sch_etf.c:141 etf_enqueue_timesortedlist+0x389/0x740 net/sched/sch_etf.c:170 __dev_xmit_skb net/core/dev.c:3710 [inline] __dev_queue_xmit+0x154a/0x30a0 net/core/dev.c:4021 neigh_hh_output include/net/neighbour.h:499 [inline] neigh_output include/net/neighbour.h:508 [inline] ip6_finish_output2+0xfb5/0x25b0 net/ipv6/ip6_output.c:117 __ip6_finish_output+0x442/0xab0 net/ipv6/ip6_output.c:143 ip6_finish_output+0x34/0x1f0 net/ipv6/ip6_output.c:153 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip6_output+0x239/0x810 net/ipv6/ip6_output.c:176 dst_output include/net/dst.h:435 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ip6_xmit+0xe1a/0x2090 net/ipv6/ip6_output.c:280 tcp_v6_send_synack+0x4e7/0x960 net/ipv6/tcp_ipv6.c:521 tcp_rtx_synack+0x10d/0x1a0 net/ipv4/tcp_output.c:3916 inet_rtx_syn_ack net/ipv4/inet_connection_sock.c:669 [inline] reqsk_timer_handler+0x4c2/0xb40 net/ipv4/inet_connection_sock.c:763 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1405 expire_timers kernel/time/timer.c:1450 [inline] __run_timers kernel/time/timer.c:1774 [inline] __run_timers kernel/time/timer.c:1741 [inline] run_timer_softirq+0x623/0x1600 kernel/time/timer.c:1787 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x192/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0x19e/0x600 arch/x86/kernel/apic/apic.c:1140 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 </IRQ> RIP: 0010:des_encrypt+0x157/0x9c0 lib/crypto/des.c:792 Code: 85 22 06 00 00 41 31 dc 41 8b 4d 04 44 89 e2 41 83 e4 3f 4a 8d 3c a5 60 72 72 88 81 e2 3f 3f 3f 3f 48 89 f8 48 c1 e8 03 31 d9 <0f> b6 34 28 48 89 f8 c1 c9 04 83 e0 07 83 c0 03 40 38 f0 7c 09 40 RSP: 0018:ffffc90003b5f6c0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff10e4e55 RBX: 00000000d2f846d0 RCX: 00000000d2f846d0 RDX: 0000000012380612 RSI: ffffffff839863ca RDI: ffffffff887272a8 RBP: dffffc0000000000 R08: ffff888091d0a380 R09: 0000000000800081 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000012 R13: ffff8880a8ae8078 R14: 00000000c545c93e R15: 0000000000000006 cipher_crypt_one crypto/cipher.c:75 [inline] crypto_cipher_encrypt_one+0x124/0x210 crypto/cipher.c:82 crypto_cbcmac_digest_update+0x1b5/0x250 crypto/ccm.c:830 crypto_shash_update+0xc4/0x120 crypto/shash.c:119 shash_ahash_update+0xa3/0x110 crypto/shash.c:246 crypto_ahash_update include/crypto/hash.h:547 [inline] hash_sendmsg+0x518/0xad0 crypto/algif_hash.c:102 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x308/0x7e0 net/socket.c:2362 ___sys_sendmsg+0x100/0x170 net/socket.c:2416 __sys_sendmmsg+0x195/0x480 net/socket.c:2506 __do_sys_sendmmsg net/socket.c:2535 [inline] __se_sys_sendmmsg net/socket.c:2532 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2532 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45c829 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6d9528ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00000000004fc080 RCX: 000000000045c829 RDX: 0000000000000001 RSI: 0000000020002640 RDI: 0000000000000004 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000008d7 R14: 00000000004cb7aa R15: 00007f6d9528f6d4 Fixes: 4b15c707 ("net/sched: Make etf report drops on error_queue") Fixes: 25db26a9 ("net/sched: Introduce the ETF Qdisc") Signed-off-by:
Eric Dumazet <edumazet@google.com> Reported-by:
syzbot <syzkaller@googlegroups.com> Cc: Vinicius Costa Gomes <vinicius.gomes@intel.com> Reviewed-by:
Vinicius Costa Gomes <vinicius.gomes@intel.com> Signed-off-by:
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- 22 Apr, 2020 12 commits
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David Ahern authored
fib_tests is spewing errors: ... Cannot open network namespace "ns1": No such file or directory Cannot open network namespace "ns1": No such file or directory Cannot open network namespace "ns1": No such file or directory Cannot open network namespace "ns1": No such file or directory ping: connect: Network is unreachable Cannot open network namespace "ns1": No such file or directory Cannot open network namespace "ns1": No such file or directory ... Each test entry in fib_tests is supposed to do its own setup and cleanup. Right now the $IP commands in fib_suppress_test are failing because there is no ns1. Add the setup/cleanup and logging expected for each test. Fixes: ca7a03c4 ("ipv6: do not free rt if FIB_LOOKUP_NOREF is set on suppress rule") Signed-off-by: -
David S. Miller authored
Florian Fainelli says: ==================== net: dsa: b53: Various ARL fixes This patch series fixes a number of short comings in the existing b53 driver ARL management logic in particular: - we were not looking up the {MAC,VID} tuples against their VID, despite having VLANs enabled - the MDB entries (multicast) would lose their validity as soon as a single port in the vector would leave the entry - the ARL was currently under utilized because we would always place new entries in bin index #1, instead of using all possible bins available, thus reducing the ARL effective size by 50% or 75% depending on the switch generation - it was possible to overwrite the ARL entries because no proper space verification was done This patch series addresses all of these issues. Changes in v2: - added a new patch to correctly flip invidual VLAN learning vs. shared VLAN learning depending on the global VLAN state - added Andrew's R-b tags for patches which did not change - corrected some verbosity and minor issues in patch #4 to match caller expectations, also avoid a variable length DECLARE_BITMAP() call ==================== Signed-off-by: -
Florian Fainelli authored
Flip the IVL_SVL_SELECT bit correctly based on the VLAN enable status, the default is to perform Shared VLAN learning instead of Individual learning. Fixes: 1da6df85 ("net: dsa: b53: Implement ARL add/del/dump operations") Signed-off-by:
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Florian Fainelli authored
When asking the ARL to read a MAC address, we will get a number of bins returned in a single read. Out of those bins, there can essentially be 3 states: - all bins are full, we have no space left, and we can either replace an existing address or return that full condition - the MAC address was found, then we need to return its bin index and modify that one, and only that one - the MAC address was not found and we have a least one bin free, we use that bin index location then The code would unfortunately fail on all counts. Fixes: 1da6df85 ("net: dsa: b53: Implement ARL add/del/dump operations") Signed-off-by:
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Florian Fainelli authored
The ARL {MAC,VID} tuple and the forward entry were off by 0x10 bytes, which means that when we read/wrote from/to ARL bin index 0, we were actually accessing the ARLA_RWCTRL register. Fixes: 1da6df85 ("net: dsa: b53: Implement ARL add/del/dump operations") Reviewed-by:Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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Florian Fainelli authored
When support for the MDB entries was added, the valid bit was correctly changed to be assigned depending on the remaining port bitmask, that is, if there were no more ports added to the entry's port bitmask, the entry now becomes invalid. There was another assignment a few lines below that would override this which would invalidate entries even when there were still multiple ports left in the MDB entry. Fixes: 5d65b64a ("net: dsa: b53: Add support for MDB") Reviewed-by:
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Florian Fainelli authored
When VLAN is enabled, and an ARL search is issued, we also need to compare the full {MAC,VID} tuple before returning a successful search result. Fixes: 1da6df85 ("net: dsa: b53: Implement ARL add/del/dump operations") Reviewed-by: -
David S. Miller authored
David Ahern says: ==================== net: Fix looping with vrf, xfrms and qdisc on VRF Trev reported that use of VRFs with xfrms is looping when a qdisc is added to the VRF device. The combination of xfrm + qdisc is not handled by the VRF driver which lost track that it has already seen the packet. The XFRM_TRANSFORMED flag is used by the netfilter code for a similar purpose, so re-use for VRF. Patch 1 drops the #ifdef around setting the flag in the xfrm output functions. Patch 2 adds a check to the VRF driver for flag; if set the packet has already passed through the VRF driver once and does not need to recirculated a second time. This is a day 1 bug with VRFs; stable wise, I would only take this back to 4.14. I have a set of test cases which I will submit to net-next. ==================== Signed-off-by: -
David Ahern authored
To avoid a loop with qdiscs and xfrms, check if the skb has already gone through the qdisc attached to the VRF device and then to the xfrm layer. If so, no need for a second redirect. Fixes: 193125db ("net: Introduce VRF device driver") Reported-by:
Trev Larock <trev@larock.ca> Signed-off-by:
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David Ahern authored
IPSKB_XFRM_TRANSFORMED and IP6SKB_XFRM_TRANSFORMED are skb flags set by xfrm code to tell other skb handlers that the packet has been passed through the xfrm output functions. Simplify the code and just always set them rather than conditionally based on netfilter enabled thus making the flag available for other users. Signed-off-by:
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Maciej Żenczykowski authored
See: https://www.rfc-editor.org/authors/rfc8781.txt Cc: Erik Kline <ek@google.com> Cc: Jen Linkova <furry@google.com> Cc: Lorenzo Colitti <lorenzo@google.com> Cc: Michael Haro <mharo@google.com> Signed-off-by:
Maciej Żenczykowski <maze@google.com> Fixes: c24a77ed ("ipv6: ndisc: add support for 'PREF64' dns64 prefix identifier") Signed-off-by:
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Yuiko Oshino authored
lan87xx_phy_init() initializes the lan87xx phy hardware including its TC10 Wake-up and Sleep features. Fixes: 3e50d2da ("Add driver for Microchip LAN87XX T1 PHYs") Signed-off-by:
Yuiko Oshino <yuiko.oshino@microchip.com> v0->v1: - Add more details in the commit message and source comments. - Update to the latest initialization sequences. - Add access_ereg_modify_changed(). - Fix access_ereg() to access SMI bank correctly. Signed-off-by:
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- 21 Apr, 2020 8 commits
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Voon Weifeng authored
This patch is to enable Intel SERDES power up/down sequence. The SERDES converts 8/10 bits data to SGMII signal. Below is an example of HW configuration for SGMII mode. The SERDES is located in the PHY IF in the diagram below. <-----------------GBE Controller---------->|<--External PHY chip--> +----------+ +----+ +---+ +----------+ | EQoS | <-GMII->| DW | < ------ > |PHY| <-SGMII-> | External | | MAC | |xPCS| |IF | | PHY | +----------+ +----+ +---+ +----------+ ^ ^ ^ ^ | | | | +---------------------MDIO-------------------------+ PHY IF configuration and status registers are accessible through mdio address 0x15 which is defined as mdio_adhoc_addr. During D0, The driver will need to power up PHY IF by changing the power state to P0. Likewise, for D3, the driver sets PHY IF power state to P3. Signed-off-by:Voon Weifeng <weifeng.voon@intel.com> Signed-off-by:
Ong Boon Leong <boon.leong.ong@intel.com> Signed-off-by:
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Dejin Zheng authored
Use the function devm_platform_ioremap_resource_byname() to simplify source code which calls the functions platform_get_resource_byname() and devm_ioremap_resource(). Remove also a few error messages which became unnecessary with this software refactoring. Suggested-by:
Markus Elfring <Markus.Elfring@web.de> Signed-off-by:
Dejin Zheng <zhengdejin5@gmail.com> Signed-off-by:
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Taehee Yoo authored
In the macvlan_device_event(), the list_first_entry_or_null() is used. This function could return null pointer if there is no node. But, the macvlan module doesn't check the null pointer. So, null-ptr-deref would occur. bond0 | +----+-----+ | | macvlan0 macvlan1 | | dummy0 dummy1 The problem scenario. If dummy1 is removed, 1. ->dellink() of dummy1 is called. 2. NETDEV_UNREGISTER of dummy1 notification is sent to macvlan module. 3. ->dellink() of macvlan1 is called. 4. NETDEV_UNREGISTER of macvlan1 notification is sent to bond module. 5. __bond_release_one() is called and it internally calls dev_set_mac_address(). 6. dev_set_mac_address() calls the ->ndo_set_mac_address() of macvlan1, which is macvlan_set_mac_address(). 7. macvlan_set_mac_address() calls the dev_set_mac_address() with dummy1. 8. NETDEV_CHANGEADDR of dummy1 is sent to macvlan module. 9. In the macvlan_device_event(), it calls list_first_entry_or_null(). At this point, dummy1 and macvlan1 were removed. So, list_first_entry_or_null() will return NULL. Test commands: ip netns add nst ip netns exec nst ip link add bond0 type bond for i in {0..10} do ip netns exec nst ip link add dummy$i type dummy ip netns exec nst ip link add macvlan$i link dummy$i \ type macvlan mode passthru ip netns exec nst ip link set macvlan$i master bond0 done ip netns del nst Splat looks like: [ 40.585687][ T146] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP DEI [ 40.587249][ T146] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 40.588342][ T146] CPU: 1 PID: 146 Comm: kworker/u8:2 Not tainted 5.7.0-rc1+ #532 [ 40.589299][ T146] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 40.590469][ T146] Workqueue: netns cleanup_net [ 40.591045][ T146] RIP: 0010:macvlan_device_event+0x4e2/0x900 [macvlan] [ 40.591905][ T146] Code: 00 00 00 00 00 fc ff df 80 3c 06 00 0f 85 45 02 00 00 48 89 da 48 b8 00 00 00 00 00 fc ff d2 [ 40.594126][ T146] RSP: 0018:ffff88806116f4a0 EFLAGS: 00010246 [ 40.594783][ T146] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 40.595653][ T146] RDX: 0000000000000000 RSI: ffff88806547ddd8 RDI: ffff8880540f1360 [ 40.596495][ T146] RBP: ffff88804011a808 R08: fffffbfff4fb8421 R09: fffffbfff4fb8421 [ 40.597377][ T146] R10: ffffffffa7dc2107 R11: 0000000000000000 R12: 0000000000000008 [ 40.598186][ T146] R13: ffff88804011a000 R14: ffff8880540f1000 R15: 1ffff1100c22de9a [ 40.599012][ T146] FS: 0000000000000000(0000) GS:ffff888067800000(0000) knlGS:0000000000000000 [ 40.600004][ T146] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.600665][ T146] CR2: 00005572d3a807b8 CR3: 000000005fcf4003 CR4: 00000000000606e0 [ 40.601485][ T146] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.602461][ T146] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.603443][ T146] Call Trace: [ 40.603871][ T146] ? nf_tables_dump_setelem+0xa0/0xa0 [nf_tables] [ 40.604587][ T146] ? macvlan_uninit+0x100/0x100 [macvlan] [ 40.605212][ T146] ? __module_text_address+0x13/0x140 [ 40.605842][ T146] notifier_call_chain+0x90/0x160 [ 40.606477][ T146] dev_set_mac_address+0x28e/0x3f0 [ 40.607117][ T146] ? netdev_notify_peers+0xc0/0xc0 [ 40.607762][ T146] ? __module_text_address+0x13/0x140 [ 40.608440][ T146] ? notifier_call_chain+0x90/0x160 [ 40.609097][ T146] ? dev_set_mac_address+0x1f0/0x3f0 [ 40.609758][ T146] dev_set_mac_address+0x1f0/0x3f0 [ 40.610402][ T146] ? __local_bh_enable_ip+0xe9/0x1b0 [ 40.611071][ T146] ? bond_hw_addr_flush+0x77/0x100 [bonding] [ 40.611823][ T146] ? netdev_notify_peers+0xc0/0xc0 [ 40.612461][ T146] ? bond_hw_addr_flush+0x77/0x100 [bonding] [ 40.613213][ T146] ? bond_hw_addr_flush+0x77/0x100 [bonding] [ 40.613963][ T146] ? __local_bh_enable_ip+0xe9/0x1b0 [ 40.614631][ T146] ? bond_time_in_interval.isra.31+0x90/0x90 [bonding] [ 40.615484][ T146] ? __bond_release_one+0x9f0/0x12c0 [bonding] [ 40.616230][ T146] __bond_release_one+0x9f0/0x12c0 [bonding] [ 40.616949][ T146] ? bond_enslave+0x47c0/0x47c0 [bonding] [ 40.617642][ T146] ? lock_downgrade+0x730/0x730 [ 40.618218][ T146] ? check_flags.part.42+0x450/0x450 [ 40.618850][ T146] ? __mutex_unlock_slowpath+0xd0/0x670 [ 40.619519][ T146] ? trace_hardirqs_on+0x30/0x180 [ 40.620117][ T146] ? wait_for_completion+0x250/0x250 [ 40.620754][ T146] bond_netdev_event+0x822/0x970 [bonding] [ 40.621460][ T146] ? __module_text_address+0x13/0x140 [ 40.622097][ T146] notifier_call_chain+0x90/0x160 [ 40.622806][ T146] rollback_registered_many+0x660/0xcf0 [ 40.623522][ T146] ? netif_set_real_num_tx_queues+0x780/0x780 [ 40.624290][ T146] ? notifier_call_chain+0x90/0x160 [ 40.624957][ T146] ? netdev_upper_dev_unlink+0x114/0x180 [ 40.625686][ T146] ? __netdev_adjacent_dev_unlink_neighbour+0x30/0x30 [ 40.626421][ T146] ? mutex_is_locked+0x13/0x50 [ 40.627016][ T146] ? unregister_netdevice_queue+0xf2/0x240 [ 40.627663][ T146] unregister_netdevice_many.part.134+0x13/0x1b0 [ 40.628362][ T146] default_device_exit_batch+0x2d9/0x390 [ 40.628987][ T146] ? unregister_netdevice_many+0x40/0x40 [ 40.629615][ T146] ? dev_change_net_namespace+0xcb0/0xcb0 [ 40.630279][ T146] ? prepare_to_wait_exclusive+0x2e0/0x2e0 [ 40.630943][ T146] ? ops_exit_list.isra.9+0x97/0x140 [ 40.631554][ T146] cleanup_net+0x441/0x890 [ ... ] Fixes: e289fd28 ("macvlan: fix the problem when mac address changes for passthru mode") Reported-by: syzbot+5035b1f9dc7ea4558d5a@syzkaller.appspotmail.com Signed-off-by:Taehee Yoo <ap420073@gmail.com> Signed-off-by:
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Jason Yan authored
The '==' expression itself is bool, no need to convert it to bool again. This fixes the following coccicheck warning: drivers/net/ethernet/intel/e1000/e1000_main.c:1479:44-49: WARNING: conversion to bool not needed here Signed-off-by:
Jason Yan <yanaijie@huawei.com> Signed-off-by:
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Jason Yan authored
The '==' expression itself is bool, no need to convert it to bool again. This fixes the following coccicheck warning: drivers/net/ethernet/intel/i40e/i40e_main.c:1614:52-57: WARNING: conversion to bool not needed here drivers/net/ethernet/intel/i40e/i40e_main.c:11439:52-57: WARNING: conversion to bool not needed here Signed-off-by:
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Jason Yan authored
The '==' expression itself is bool, no need to convert it to bool again. This fixes the following coccicheck warning: drivers/ptp/ptp_ines.c:403:55-60: WARNING: conversion to bool not needed here drivers/ptp/ptp_ines.c:404:55-60: WARNING: conversion to bool not needed here Signed-off-by:
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Jiri Slaby authored
Commit 018d26fc ("cgroup, netclassid: periodically release file_lock on classid") added a second cond_resched to write_classid indirectly by update_classid_task. Remove the one in write_classid. Signed-off-by:
Jiri Slaby <jslaby@suse.cz> Cc: Dmitry Yakunin <zeil@yandex-team.ru> Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Cc: David S. Miller <davem@davemloft.net> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller authored
Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains Netfilter fixes for net: 1) flow_block_cb memleak in nf_flow_table_offload_del_cb(), from Roi Dayan. 2) Fix error path handling in nf_nat_inet_register_fn(), from Hillf Danton. ==================== Signed-off-by:
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- 20 Apr, 2020 2 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
mlx5-fixes-2020-04-20 Signed-off-by: -
Zhu Yanjun authored
In the switchdev mode, when running "cat /sys/class/net/NIC/statistics/tx_packets", the ppcnt register is accessed to get the latest values. But currently this command can not get the correct values from ppcnt. From firmware manual, before getting the 802_3 counters, the 802_3 data layout should be set to the ppcnt register. When the command "cat /sys/class/net/NIC/statistics/tx_packets" is run, before updating 802_3 data layout with ppcnt register, the monitor counters are tested. The test result will decide the 802_3 data layout is updated or not. Actually the monitor counters do not support to monitor rx/tx stats of 802_3 in switchdev mode. So the rx/tx counters change will not trigger monitor counters. So the 802_3 data layout will not be updated in ppcnt register. Finally this command can not get the latest values from ppcnt register with 802_3 data layout. Fixes: 5c7e8bbb ("net/mlx5e: Use monitor counters for update stats") Signed-off-by:
Zhu Yanjun <yanjunz@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com>
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