- 10 Jun, 2021 16 commits
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Nikolay Aleksandrov authored
This patch fixes a tunnel_dst null pointer dereference due to lockless access in the tunnel egress path. When deleting a vlan tunnel the tunnel_dst pointer is set to NULL without waiting a grace period (i.e. while it's still usable) and packets egressing are dereferencing it without checking. Use READ/WRITE_ONCE to annotate the lockless use of tunnel_id, use RCU for accessing tunnel_dst and make sure it is read only once and checked in the egress path. The dst is already properly RCU protected so we don't need to do anything fancy than to make sure tunnel_id and tunnel_dst are read only once and checked in the egress path. Cc: stable@vger.kernel.org Fixes: 11538d03 ("bridge: vlan dst_metadata hooks in ingress and egress paths") Signed-off-by:
Nikolay Aleksandrov <nikolay@nvidia.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Zheng Yongjun authored
Function 'ping_queue_rcv_skb' not always return success, which will also return fail. If not check the wrong return value of it, lead to function `ping_rcv` return success. Signed-off-by:
Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by:
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Willem de Bruijn authored
msg_zerocopy signals if a send operation required copying with a flag in serr->ee.ee_code. This field can be incorrect as of the below commit, as a result of both structs uarg and serr pointing into the same skb->cb[]. uarg->zerocopy must be read before skb->cb[] is reinitialized to hold serr. Similar to other fields len, hi and lo, use a local variable to temporarily hold the value. This was not a problem before, when the value was passed as a function argument. Fixes: 75518851 ("skbuff: Push status and refcounts into sock_zerocopy_callback") Reported-by:
Talal Ahmad <talalahmad@google.com> Signed-off-by:
Willem de Bruijn <willemb@google.com> Acked-by:
Soheil Hassas Yeganeh <soheil@google.com> Reviewed-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
Saeed Mahameed says: ==================== mlx5-fixes-2021-06-09 ==================== Signed-off-by: -
Aya Levin authored
The device is able to offload either the outer header csum or inner header csum. The driver utilizes the inner csum offload. So, prohibit setting of tx-gre-csum-segmentation and let it be: off[fixed]. Fixes: 27299841 ("net/mlx5e: Support TSO and TX checksum offloads for GRE tunnels") Signed-off-by:
Aya Levin <ayal@nvidia.com> Reviewed-by:
Tariq Toukan <tariqt@nvidia.com> Signed-off-by:
Saeed Mahameed <saeedm@nvidia.com>
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Aya Levin authored
The device is able to offload either the outer header csum or inner header csum. The driver utilizes the inner csum offload. Hence, block setting of tx-udp_tnl-csum-segmentation and set it to off[fixed]. Fixes: b49663c8 ("net/mlx5e: Add support for UDP tunnel segmentation with outer checksum offload") Signed-off-by:
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Shay Drory authored
In the scenario described below, an EQ can remain in FIRED state which can result in missing an interrupt generation. The scenario: device mlx5_core driver ------ ---------------- EQ1.eqe generated EQ1.MSI-X sent EQ1.state = FIRED EQ2.eqe generated mlx5_irq() polls - eq1_eqes() arm eq1 polls - eq2_eqes() arm eq2 EQ2.MSI-X sent EQ2.state = FIRED mlx5_irq() polls - eq2_eqes() -- no eqes found driver skips EQ arming; ->EQ2 remains fired, misses generating interrupt. Hence, always arm the EQ by reverting the cited commit in fixes tag. Fixes: d894892d ("net/mlx5: Arm only EQs with EQEs") Signed-off-by:Shay Drory <shayd@nvidia.com> Reviewed-by:
Parav Pandit <parav@nvidia.com> Signed-off-by:
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Aya Levin authored
Steering packets to PTP-SQ should be done only if the SKB has SKBTX_HW_TSTAMP set in the tx_flags. While here, take the function into a header and inline it. Set the whole condition to select the PTP-SQ to unlikely. Fixes: 24c22dd0 ("net/mlx5e: Add states to PTP channel") Signed-off-by:
Maxim Mikityanskiy <maximmi@mellanox.com> Signed-off-by:
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Aya Levin authored
Since the driver opens the PTP-RQ under channel 0, it appears to the stack as if the SKB was received on rxq0. So from thew stack POV there are still the same number of RX queues. Fixes: 960fbfe2 ("net/mlx5e: Allow coexistence of CQE compression and HW TS PTP") Signed-off-by:
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Chris Mi authored
When changing eswitch mode, the netdev is detached from the hardware resources. So verify dev is present in get devlink port ndo. Otherwise, we will hit the following panic: [241535.973539] RIP: 0010:__devlink_port_phys_port_name_get+0x13/0x1b0 [241535.976471] RSP: 0018:ffff9eaf0ae1b7c8 EFLAGS: 00010292 [241535.977471] RAX: 000000000002d370 RBX: 000000000002d370 RCX: 0000000000000000 [241535.978479] RDX: 0000000000000010 RSI: ffff9eaf0ae1b858 RDI: 000000000002d370 [241535.979482] RBP: ffff9eaf0ae1b7e0 R08: 000000000000002a R09: ffff8888d54d13da [241535.980486] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8888e6700000 [241535.981491] R13: ffff9eaf0ae1b858 R14: 0000000000000010 R15: 0000000000000000 [241535.982489] FS: 00007fd374ef3740(0000) GS:ffff88909ea00000(0000) knlGS:0000000000000000 [241535.983494] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [241535.984487] CR2: 000000000002d444 CR3: 000000089fd26006 CR4: 00000000003706e0 [241535.985502] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [241535.986499] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [241535.987477] Call Trace: [241535.988426] ? nla_put_64bit+0x71/0xa0 [241535.989368] devlink_compat_phys_port_name_get+0x50/0xa0 [241535.990312] dev_get_phys_port_name+0x4b/0x60 [241535.991252] rtnl_fill_ifinfo+0x57b/0xcb0 [241535.992192] rtnl_dump_ifinfo+0x58f/0x6d0 [241535.993123] ? ksize+0x14/0x20 [241535.994033] ? __alloc_skb+0xe8/0x250 [241535.994935] netlink_dump+0x17c/0x300 [241535.995821] netlink_recvmsg+0x1de/0x2c0 [241535.996677] sock_recvmsg+0x70/0x80 [241535.997518] ____sys_recvmsg+0x9b/0x1b0 [241535.998360] ? iovec_from_user+0x82/0x120 [241535.999202] ? __import_iovec+0x2c/0x130 [241536.000031] ___sys_recvmsg+0x94/0x130 [241536.000850] ? __handle_mm_fault+0x56d/0x6e0 [241536.001668] __sys_recvmsg+0x5f/0xb0 [241536.002464] ? syscall_enter_from_user_mode+0x2b/0x80 [241536.003242] __x64_sys_recvmsg+0x1f/0x30 [241536.004008] do_syscall_64+0x38/0x50 [241536.004767] entry_SYSCALL_64_after_hwframe+0x44/0xae [241536.005532] RIP: 0033:0x7fd375014f47 Fixes: 2ff349c5 ("net/mlx5e: Verify dev is present in some ndos") Signed-off-by:
Roi Dayan <roid@nvidia.com> Signed-off-by:
Chris Mi <cmi@nvidia.com> Signed-off-by:
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Maor Gottlieb authored
SW steering uses RC QP to write/read to/from ICM, hence it's not supported when RoCE is not supported as well. Fixes: 70605ea5 ("net/mlx5: DR, Expose APIs for direct rule managing") Signed-off-by:
Maor Gottlieb <maorg@nvidia.com> Reviewed-by:
Alex Vesker <valex@nvidia.com> Reviewed-by:
Yevgeny Kliteynik <kliteyn@nvidia.com> Signed-off-by:
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Maor Gottlieb authored
Check if RoCE is supported by the device before enable it in the vport context and create all the RDMA steering objects. Fixes: 80f09dfc ("net/mlx5: Eswitch, enable RoCE loopback traffic") Signed-off-by:
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Dima Chumak authored
When adding a hairpin flow, a firmware-side send queue is created for the peer net device, which claims some host memory pages for its internal ring buffer. If the peer net device is removed/unbound before the hairpin flow is deleted, then the send queue is not destroyed which leads to a stack trace on pci device remove: [ 748.005230] mlx5_core 0000:08:00.2: wait_func:1094:(pid 12985): MANAGE_PAGES(0x108) timeout. Will cause a leak of a command resource [ 748.005231] mlx5_core 0000:08:00.2: reclaim_pages:514:(pid 12985): failed reclaiming pages: err -110 [ 748.001835] mlx5_core 0000:08:00.2: mlx5_reclaim_root_pages:653:(pid 12985): failed reclaiming pages (-110) for func id 0x0 [ 748.002171] ------------[ cut here ]------------ [ 748.001177] FW pages counter is 4 after reclaiming all pages [ 748.001186] WARNING: CPU: 1 PID: 12985 at drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c:685 mlx5_reclaim_startup_pages+0x34b/0x460 [mlx5_core] [ +0.002771] Modules linked in: cls_flower mlx5_ib mlx5_core ptp pps_core act_mirred sch_ingress openvswitch nsh xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 br_netfilter rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_iscsi rdma_cm ib_umad ib_ipoib iw_cm ib_cm ib_uverbs ib_core overlay fuse [last unloaded: pps_core] [ 748.007225] CPU: 1 PID: 12985 Comm: tee Not tainted 5.12.0+ #1 [ 748.001376] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [ 748.002315] RIP: 0010:mlx5_reclaim_startup_pages+0x34b/0x460 [mlx5_core] [ 748.001679] Code: 28 00 00 00 0f 85 22 01 00 00 48 81 c4 b0 00 00 00 31 c0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 c7 c7 40 cc 19 a1 e8 9f 71 0e e2 <0f> 0b e9 30 ff ff ff 48 c7 c7 a0 cc 19 a1 e8 8c 71 0e e2 0f 0b e9 [ 748.003781] RSP: 0018:ffff88815220faf8 EFLAGS: 00010286 [ 748.001149] RAX: 0000000000000000 RBX: ffff8881b4900280 RCX: 0000000000000000 [ 748.001445] RDX: 0000000000000027 RSI: 0000000000000004 RDI: ffffed102a441f51 [ 748.001614] RBP: 00000000000032b9 R08: 0000000000000001 R09: ffffed1054a15ee8 [ 748.001446] R10: ffff8882a50af73b R11: ffffed1054a15ee7 R12: fffffbfff07c1e30 [ 748.001447] R13: dffffc0000000000 R14: ffff8881b492cba8 R15: 0000000000000000 [ 748.001429] FS: 00007f58bd08b580(0000) GS:ffff8882a5080000(0000) knlGS:0000000000000000 [ 748.001695] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 748.001309] CR2: 000055a026351740 CR3: 00000001d3b48006 CR4: 0000000000370ea0 [ 748.001506] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 748.001483] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 748.001654] Call Trace: [ 748.000576] ? mlx5_satisfy_startup_pages+0x290/0x290 [mlx5_core] [ 748.001416] ? mlx5_cmd_teardown_hca+0xa2/0xd0 [mlx5_core] [ 748.001354] ? mlx5_cmd_init_hca+0x280/0x280 [mlx5_core] [ 748.001203] mlx5_function_teardown+0x30/0x60 [mlx5_core] [ 748.001275] mlx5_uninit_one+0xa7/0xc0 [mlx5_core] [ 748.001200] remove_one+0x5f/0xc0 [mlx5_core] [ 748.001075] pci_device_remove+0x9f/0x1d0 [ 748.000833] device_release_driver_internal+0x1e0/0x490 [ 748.001207] unbind_store+0x19f/0x200 [ 748.000942] ? sysfs_file_ops+0x170/0x170 [ 748.001000] kernfs_fop_write_iter+0x2bc/0x450 [ 748.000970] new_sync_write+0x373/0x610 [ 748.001124] ? new_sync_read+0x600/0x600 [ 748.001057] ? lock_acquire+0x4d6/0x700 [ 748.000908] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 748.001126] ? fd_install+0x1c9/0x4d0 [ 748.000951] vfs_write+0x4d0/0x800 [ 748.000804] ksys_write+0xf9/0x1d0 [ 748.000868] ? __x64_sys_read+0xb0/0xb0 [ 748.000811] ? filp_open+0x50/0x50 [ 748.000919] ? syscall_enter_from_user_mode+0x1d/0x50 [ 748.001223] do_syscall_64+0x3f/0x80 [ 748.000892] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 748.001026] RIP: 0033:0x7f58bcfb22f7 [ 748.000944] Code: 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24 [ 748.003925] RSP: 002b:00007fffd7f2aaa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 748.001732] RAX: ffffffffffffffda RBX: 000000000000000d RCX: 00007f58bcfb22f7 [ 748.001426] RDX: 000000000000000d RSI: 00007fffd7f2abc0 RDI: 0000000000000003 [ 748.001746] RBP: 00007fffd7f2abc0 R08: 0000000000000000 R09: 0000000000000001 [ 748.001631] R10: 00000000000001b6 R11: 0000000000000246 R12: 000000000000000d [ 748.001537] R13: 00005597ac2c24a0 R14: 000000000000000d R15: 00007f58bd084700 [ 748.001564] irq event stamp: 0 [ 748.000787] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [ 748.001399] hardirqs last disabled at (0): [<ffffffff813132cf>] copy_process+0x146f/0x5eb0 [ 748.001854] softirqs last enabled at (0): [<ffffffff8131330e>] copy_process+0x14ae/0x5eb0 [ 748.013431] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 748.001492] ---[ end trace a6fabd773d1c51ae ]--- Fix by destroying the send queue of a hairpin peer net device that is being removed/unbound, which returns the allocated ring buffer pages to the host. Fixes: 4d8fcf21 ("net/mlx5e: Avoid unbounded peer devices when unpairing TC hairpin rules") Signed-off-by:
Dima Chumak <dchumak@nvidia.com> Reviewed-by:
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Huy Nguyen authored
Currently, IPsec feature is disabled because mlx5e_build_nic_netdev is required to be called after mlx5e_ipsec_init. This requirement is invalid as mlx5e_build_nic_netdev and mlx5e_ipsec_init initialize independent resources. Remove ipsec pointer check in mlx5e_build_nic_netdev so that the two functions can be called at any order. Fixes: 547eede0 ("net/mlx5e: IPSec, Innova IPSec offload infrastructure") Signed-off-by:
Huy Nguyen <huyn@nvidia.com> Reviewed-by:
Raed Salem <raeds@nvidia.com> Signed-off-by:
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Vlad Buslov authored
Function mlx5e_rep_neigh_update() wasn't updated to accommodate rtnl lock removal from TC filter update path and properly handle concurrent encap entry insertion/deletion which can lead to following use-after-free: [23827.464923] ================================================================== [23827.469446] BUG: KASAN: use-after-free in mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.470971] Read of size 4 at addr ffff8881d132228c by task kworker/u20:6/21635 [23827.472251] [23827.472615] CPU: 9 PID: 21635 Comm: kworker/u20:6 Not tainted 5.13.0-rc3+ #5 [23827.473788] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [23827.475639] Workqueue: mlx5e mlx5e_rep_neigh_update [mlx5_core] [23827.476731] Call Trace: [23827.477260] dump_stack+0xbb/0x107 [23827.477906] print_address_description.constprop.0+0x18/0x140 [23827.478896] ? mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.479879] ? mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.480905] kasan_report.cold+0x7c/0xd8 [23827.481701] ? mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.482744] kasan_check_range+0x145/0x1a0 [23827.493112] mlx5e_encap_take+0x72/0x140 [mlx5_core] [23827.494054] ? mlx5e_tc_tun_encap_info_equal_generic+0x140/0x140 [mlx5_core] [23827.495296] mlx5e_rep_neigh_update+0x41e/0x5e0 [mlx5_core] [23827.496338] ? mlx5e_rep_neigh_entry_release+0xb80/0xb80 [mlx5_core] [23827.497486] ? read_word_at_a_time+0xe/0x20 [23827.498250] ? strscpy+0xa0/0x2a0 [23827.498889] process_one_work+0x8ac/0x14e0 [23827.499638] ? lockdep_hardirqs_on_prepare+0x400/0x400 [23827.500537] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [23827.501359] ? rwlock_bug.part.0+0x90/0x90 [23827.502116] worker_thread+0x53b/0x1220 [23827.502831] ? process_one_work+0x14e0/0x14e0 [23827.503627] kthread+0x328/0x3f0 [23827.504254] ? _raw_spin_unlock_irq+0x24/0x40 [23827.505065] ? __kthread_bind_mask+0x90/0x90 [23827.505912] ret_from_fork+0x1f/0x30 [23827.506621] [23827.506987] Allocated by task 28248: [23827.507694] kasan_save_stack+0x1b/0x40 [23827.508476] __kasan_kmalloc+0x7c/0x90 [23827.509197] mlx5e_attach_encap+0xde1/0x1d40 [mlx5_core] [23827.510194] mlx5e_tc_add_fdb_flow+0x397/0xc40 [mlx5_core] [23827.511218] __mlx5e_add_fdb_flow+0x519/0xb30 [mlx5_core] [23827.512234] mlx5e_configure_flower+0x191c/0x4870 [mlx5_core] [23827.513298] tc_setup_cb_add+0x1d5/0x420 [23827.514023] fl_hw_replace_filter+0x382/0x6a0 [cls_flower] [23827.514975] fl_change+0x2ceb/0x4a51 [cls_flower] [23827.515821] tc_new_tfilter+0x89a/0x2070 [23827.516548] rtnetlink_rcv_msg+0x644/0x8c0 [23827.517300] netlink_rcv_skb+0x11d/0x340 [23827.518021] netlink_unicast+0x42b/0x700 [23827.518742] netlink_sendmsg+0x743/0xc20 [23827.519467] sock_sendmsg+0xb2/0xe0 [23827.520131] ____sys_sendmsg+0x590/0x770 [23827.520851] ___sys_sendmsg+0xd8/0x160 [23827.521552] __sys_sendmsg+0xb7/0x140 [23827.522238] do_syscall_64+0x3a/0x70 [23827.522907] entry_SYSCALL_64_after_hwframe+0x44/0xae [23827.523797] [23827.524163] Freed by task 25948: [23827.524780] kasan_save_stack+0x1b/0x40 [23827.525488] kasan_set_track+0x1c/0x30 [23827.526187] kasan_set_free_info+0x20/0x30 [23827.526968] __kasan_slab_free+0xed/0x130 [23827.527709] slab_free_freelist_hook+0xcf/0x1d0 [23827.528528] kmem_cache_free_bulk+0x33a/0x6e0 [23827.529317] kfree_rcu_work+0x55f/0xb70 [23827.530024] process_one_work+0x8ac/0x14e0 [23827.530770] worker_thread+0x53b/0x1220 [23827.531480] kthread+0x328/0x3f0 [23827.532114] ret_from_fork+0x1f/0x30 [23827.532785] [23827.533147] Last potentially related work creation: [23827.534007] kasan_save_stack+0x1b/0x40 [23827.534710] kasan_record_aux_stack+0xab/0xc0 [23827.535492] kvfree_call_rcu+0x31/0x7b0 [23827.536206] mlx5e_tc_del_fdb_flow+0x577/0xef0 [mlx5_core] [23827.537305] mlx5e_flow_put+0x49/0x80 [mlx5_core] [23827.538290] mlx5e_delete_flower+0x6d1/0xe60 [mlx5_core] [23827.539300] tc_setup_cb_destroy+0x18e/0x2f0 [23827.540144] fl_hw_destroy_filter+0x1d2/0x310 [cls_flower] [23827.541148] __fl_delete+0x4dc/0x660 [cls_flower] [23827.541985] fl_delete+0x97/0x160 [cls_flower] [23827.542782] tc_del_tfilter+0x7ab/0x13d0 [23827.543503] rtnetlink_rcv_msg+0x644/0x8c0 [23827.544257] netlink_rcv_skb+0x11d/0x340 [23827.544981] netlink_unicast+0x42b/0x700 [23827.545700] netlink_sendmsg+0x743/0xc20 [23827.546424] sock_sendmsg+0xb2/0xe0 [23827.547084] ____sys_sendmsg+0x590/0x770 [23827.547850] ___sys_sendmsg+0xd8/0x160 [23827.548606] __sys_sendmsg+0xb7/0x140 [23827.549303] do_syscall_64+0x3a/0x70 [23827.549969] entry_SYSCALL_64_after_hwframe+0x44/0xae [23827.550853] [23827.551217] The buggy address belongs to the object at ffff8881d1322200 [23827.551217] which belongs to the cache kmalloc-256 of size 256 [23827.553341] The buggy address is located 140 bytes inside of [23827.553341] 256-byte region [ffff8881d1322200, ffff8881d1322300) [23827.555747] The buggy address belongs to the page: [23827.556847] page:00000000898762aa refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d1320 [23827.558651] head:00000000898762aa order:2 compound_mapcount:0 compound_pincount:0 [23827.559961] flags: 0x2ffff800010200(slab|head|node=0|zone=2|lastcpupid=0x1ffff) [23827.561243] raw: 002ffff800010200 dead000000000100 dead000000000122 ffff888100042b40 [23827.562653] raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000 [23827.564112] page dumped because: kasan: bad access detected [23827.565439] [23827.565932] Memory state around the buggy address: [23827.566917] ffff8881d1322180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [23827.568485] ffff8881d1322200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [23827.569818] >ffff8881d1322280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [23827.571143] ^ [23827.571879] ffff8881d1322300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [23827.573283] ffff8881d1322380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [23827.574654] ================================================================== Most of the necessary logic is already correctly implemented by mlx5e_get_next_valid_encap() helper that is used in neigh stats update handler. Make the handler generic by renaming it to mlx5e_get_next_matching_encap() and use callback to test whether flow is matching instead of hardcoded check for 'valid' flag value. Implement mlx5e_get_next_valid_encap() by calling mlx5e_get_next_matching_encap() with callback that tests encap MLX5_ENCAP_ENTRY_VALID flag. Implement new mlx5e_get_next_init_encap() helper by calling mlx5e_get_next_matching_encap() with callback that tests encap completion result to be non-error and use it in mlx5e_rep_neigh_update() to safely iterate over nhe->encap_list. Remove encap completion logic from mlx5e_rep_update_flows() since the encap entries passed to this function are already guaranteed to be properly initialized by similar code in mlx5e_get_next_init_encap(). Fixes: 2a1f1768 ("net/mlx5e: Refactor neigh update for concurrent execution") Signed-off-by:
Vlad Buslov <vladbu@nvidia.com> Reviewed-by:
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Yang Li authored
When the code execute 'if (!priv->fs.arfs->wq)', the value of err is 0. So, we use -ENOMEM to indicate that the function create_singlethread_workqueue() return NULL. Clean up smatch warning: drivers/net/ethernet/mellanox/mlx5/core/en_arfs.c:373 mlx5e_arfs_create_tables() warn: missing error code 'err'. Reported-by:
Abaci Robot <abaci@linux.alibaba.com> Fixes: f6755b80 ("net/mlx5e: Dynamic alloc arfs table for netdev when needed") Signed-off-by:
Yang Li <yang.lee@linux.alibaba.com> Signed-off-by:
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- 09 Jun, 2021 15 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queueDavid S. Miller authored
Tony Nguyen says: ==================== Intel Wired LAN Driver Updates 2021-06-09 This series contains updates to ice driver only. Maciej informs the user when XDP is not supported due to the driver being in the 'safe mode' state. He also adds a parameter to Tx queue configuration to resolve an issue in configuring XDP queues as it cannot rely on using the number Tx or Rx queues. ==================== Signed-off-by: -
Marcelo Ricardo Leitner authored
This this the counterpart of 8aa7b526 ("openvswitch: handle DNAT tuple collision") for act_ct. From that commit changelog: """ With multiple DNAT rules it's possible that after destination translation the resulting tuples collide. ... Netfilter handles this case by allocating a null binding for SNAT at egress by default. Perform the same operation in openvswitch for DNAT if no explicit SNAT is requested by the user and allocate a null binding for SNAT for packets in the "original" direction. """ Fixes: 95219afb ("act_ct: support asymmetric conntrack") Signed-off-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
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Ido Schimmel authored
Cited commit started returning errors when notification info is not filled by the bridge driver, resulting in the following regression: # ip link add name br1 type bridge vlan_filtering 1 # bridge vlan add dev br1 vid 555 self pvid untagged RTNETLINK answers: Invalid argument As long as the bridge driver does not fill notification info for the bridge device itself, an empty notification should not be considered as an error. This is explained in commit 59ccaaaa ("bridge: dont send notification when skb->len == 0 in rtnl_bridge_notify"). Fix by removing the error and add a comment to avoid future bugs. Fixes: a8db57c1 ("rtnetlink: Fix missing error code in rtnl_bridge_notify()") Signed-off-by:
Ido Schimmel <idosch@nvidia.com> Reviewed-by:
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David S. Miller authored
Merge tag 'mac80211-for-net-2021-06-09' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 Johannes berg says: ==================== A fair number of fixes: * fix more fallout from RTNL locking changes * fixes for some of the bugs found by syzbot * drop multicast fragments in mac80211 to align with the spec and what drivers are doing now * fix NULL-ptr deref in radiotap injection ==================== Signed-off-by:
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Paolo Abeni authored
Kaustubh reported and diagnosed a panic in udp_lib_lookup(). The root cause is udp_abort() racing with close(). Both racing functions acquire the socket lock, but udp{v6}_destroy_sock() release it before performing destructive actions. We can't easily extend the socket lock scope to avoid the race, instead use the SOCK_DEAD flag to prevent udp_abort from doing any action when the critical race happens. Diagnosed-and-tested-by:Kaustubh Pandey <kapandey@codeaurora.org> Fixes: 5d77dca8 ("net: diag: support SOCK_DESTROY for UDP sockets") Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
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Eric Dumazet authored
Both functions are known to be racy when reading inet_num as we do not want to grab locks for the common case the socket has been bound already. The race is resolved in inet_autobind() by reading again inet_num under the socket lock. syzbot reported: BUG: KCSAN: data-race in inet_send_prepare / udp_lib_get_port write to 0xffff88812cba150e of 2 bytes by task 24135 on cpu 0: udp_lib_get_port+0x4b2/0xe20 net/ipv4/udp.c:308 udp_v6_get_port+0x5e/0x70 net/ipv6/udp.c:89 inet_autobind net/ipv4/af_inet.c:183 [inline] inet_send_prepare+0xd0/0x210 net/ipv4/af_inet.c:807 inet6_sendmsg+0x29/0x80 net/ipv6/af_inet6.c:639 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg net/socket.c:674 [inline] ____sys_sendmsg+0x360/0x4d0 net/socket.c:2350 ___sys_sendmsg net/socket.c:2404 [inline] __sys_sendmmsg+0x315/0x4b0 net/socket.c:2490 __do_sys_sendmmsg net/socket.c:2519 [inline] __se_sys_sendmmsg net/socket.c:2516 [inline] __x64_sys_sendmmsg+0x53/0x60 net/socket.c:2516 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88812cba150e of 2 bytes by task 24132 on cpu 1: inet_send_prepare+0x21/0x210 net/ipv4/af_inet.c:806 inet6_sendmsg+0x29/0x80 net/ipv6/af_inet6.c:639 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg net/socket.c:674 [inline] ____sys_sendmsg+0x360/0x4d0 net/socket.c:2350 ___sys_sendmsg net/socket.c:2404 [inline] __sys_sendmmsg+0x315/0x4b0 net/socket.c:2490 __do_sys_sendmmsg net/socket.c:2519 [inline] __se_sys_sendmmsg net/socket.c:2516 [inline] __x64_sys_sendmmsg+0x53/0x60 net/socket.c:2516 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x0000 -> 0x9db4 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 24132 Comm: syz-executor.2 Not tainted 5.13.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Signed-off-by:
syzbot <syzkaller@googlegroups.com> Signed-off-by:
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Austin Kim authored
Several ethtool functions leave heap uncleared (potentially) by drivers. This will leave the unused portion of heap unchanged and might copy the full contents back to userspace. Signed-off-by:
Austin Kim <austindh.kim@gmail.com> Signed-off-by:
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Maciej Fijalkowski authored
Commit ae15e0ba ("ice: Change number of XDP Tx queues to match number of Rx queues") tried to address the incorrect setting of XDP queue count that was based on the Tx queue count, whereas in theory we should provide the XDP queue per Rx queue. However, the routines that setup and destroy the set of Tx resources are still based on the vsi->num_txq. Ice supports the asynchronous Tx/Rx queue count, so for a setup where vsi->num_txq > vsi->num_rxq, ice_vsi_stop_tx_rings and ice_vsi_cfg_txqs will be accessing the vsi->xdp_rings out of the bounds. Parameterize two mentioned functions so they get the size of Tx resources array as the input. Fixes: ae15e0ba ("ice: Change number of XDP Tx queues to match number of Rx queues") Signed-off-by:
Maciej Fijalkowski <maciej.fijalkowski@intel.com> Tested-by:
Kiran Bhandare <kiranx.bhandare@intel.com> Signed-off-by:
Tony Nguyen <anthony.l.nguyen@intel.com>
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Maciej Fijalkowski authored
ice driver requires a programmable pipeline firmware package in order to have a support for advanced features. Otherwise, driver falls back to so called 'safe mode'. For that mode, ndo_bpf callback is not exposed and when user tries to load XDP program, the following happens: $ sudo ./xdp1 enp179s0f1 libbpf: Kernel error message: Underlying driver does not support XDP in native mode link set xdp fd failed which is sort of confusing, as there is a native XDP support, but not in the current mode. Improve the user experience by providing the specific ndo_bpf callback dedicated for safe mode which will make use of extack to explicitly let the user know that the DDP package is missing and that's the reason that the XDP can't be loaded onto interface currently. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Fixes: efc2214b ("ice: Add support for XDP") Signed-off-by:
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Johannes Berg authored
These are not permitted by the spec, just drop them. Link: https://lore.kernel.org/r/20210609161305.23def022b750.Ibd6dd3cdce573dae262fcdc47f8ac52b883a9c50@changeidSigned-off-by:
Johannes Berg <johannes.berg@intel.com>
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Johannes Berg authored
When reconfiguration fails, we shut down everything, but we cannot call cfg80211_shutdown_all_interfaces() with the wiphy mutex held. Since cfg80211 now calls it on resume errors, we only need to do likewise for where we call reconfig (whether directly or indirectly), but not under the wiphy lock. Cc: stable@vger.kernel.org Fixes: 2fe8ef10 ("cfg80211: change netdev registration/unregistration semantics") Link: https://lore.kernel.org/r/20210608113226.78233c80f548.Iecc104aceb89f0568f50e9670a9cb191a1c8887b@changeidSigned-off-by:
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Johannes Berg authored
If resume fails, we should shut down all interfaces as the hardware is probably dead. This was/is already done now in mac80211, but we need to change that due to locking issues, so move it here and do it without the wiphy lock held. Cc: stable@vger.kernel.org Fixes: 2fe8ef10 ("cfg80211: change netdev registration/unregistration semantics") Link: https://lore.kernel.org/r/20210608113226.d564ca69de7c.I2e3c3e5d410b72a4f63bade4fb075df041b3d92f@changeidSigned-off-by:
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Johannes Berg authored
When I moved around the code here, I neglected that we could still call register_netdev() or similar without the wiphy mutex held, which then calls cfg80211_register_wdev() - that's also done from cfg80211_register_netdevice(), but the phy80211 symlink creation was only there. Now, the symlink isn't needed for a *pure* wdev, but a netdev not registered via cfg80211_register_wdev() should still have the symlink, so move the creation to the right place. Cc: stable@vger.kernel.org Fixes: 2fe8ef10 ("cfg80211: change netdev registration/unregistration semantics") Link: https://lore.kernel.org/r/20210608113226.a5dc4c1e488c.Ia42fe663cefe47b0883af78c98f284c5555bbe5d@changeidSigned-off-by:
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Johannes Berg authored
cfg80211 now calls suspend/resume with the wiphy lock held, and while there's a problem with that needing to be fixed, we should do the same in debugfs. Cc: stable@vger.kernel.org Fixes: a05829a7 ("cfg80211: avoid holding the RTNL when calling the driver") Link: https://lore.kernel.org/r/20210608113226.14020430e449.I78e19db0a55a8295a376e15ac4cf77dbb4c6fb51@changeidSigned-off-by:
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Aleksander Jan Bajkowski authored
This patch fixes TX hangs with threaded NAPI enabled. The scheduled NAPI seems to be executed in parallel with the interrupt on second thread. Sometimes it happens that ltq_dma_disable_irq() is executed after xrx200_tx_housekeeping(). The symptom is that TX interrupts are disabled in the DMA controller. As a result, the TX hangs after a few seconds of the iperf test. Scheduling NAPI after disabling interrupts fixes this issue. Tested on Lantiq xRX200 (BT Home Hub 5A). Fixes: 9423361d ("net: lantiq: Disable IRQs only if NAPI gets scheduled ") Signed-off-by:
Aleksander Jan Bajkowski <olek2@wp.pl> Acked-by:
Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by:
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- 08 Jun, 2021 9 commits
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Shay Agroskin authored
This patch fixes several bugs found when (DMA/LLQ) mapping a packet for transmission. The mapping procedure makes the transmitted packet accessible by the device. When using LLQ, this requires copying the packet's header to push header (which would be passed to LLQ) and creating DMA mapping for the payload (if the packet doesn't fit the maximum push length). When not using LLQ, we map the whole packet with DMA. The following bugs are fixed in the code: 1. Add support for non-LLQ machines: The ena_xdp_tx_map_frame() function assumed that LLQ is supported, and never mapped the whole packet using DMA. On some instances, which don't support LLQ, this causes loss of traffic. 2. Wrong DMA buffer length passed to device: When using LLQ, the first 'tx_max_header_size' bytes of the packet would be copied to push header. The rest of the packet would be copied to a DMA'd buffer. 3. Freeing the XDP buffer twice in case of a mapping error: In case a buffer DMA mapping fails, the function uses xdp_return_frame_rx_napi() to free the RX buffer and returns from the function with an error. XDP frames that fail to xmit get freed by the kernel and so there is no need for this call. Fixes: 548c4940 ("net: ena: Implement XDP_TX action") Signed-off-by:Shay Agroskin <shayagr@amazon.com> Signed-off-by:
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Vladimir Oltean authored
Because flow control is set up statically in ocelot_init_port(), and not in phylink_mac_link_up(), what happens is that after the blamed commit, the flow control remains disabled after the port flushing procedure. Fixes: eb4733d7 ("net: dsa: felix: implement port flushing on .phylink_mac_link_down") Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by:
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Pavel Skripkin authored
Syzbot reported memory leak in rds. The problem was in unputted refcount in case of error. int rds_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, int msg_flags) { ... if (!rds_next_incoming(rs, &inc)) { ... } After this "if" inc refcount incremented and if (rds_cmsg_recv(inc, msg, rs)) { ret = -EFAULT; goto out; } ... out: return ret; } in case of rds_cmsg_recv() fail the refcount won't be decremented. And it's easy to see from ftrace log, that rds_inc_addref() don't have rds_inc_put() pair in rds_recvmsg() after rds_cmsg_recv() 1) | rds_recvmsg() { 1) 3.721 us | rds_inc_addref(); 1) 3.853 us | rds_message_inc_copy_to_user(); 1) + 10.395 us | rds_cmsg_recv(); 1) + 34.260 us | } Fixes: bdbe6fbc ("RDS: recv.c") Reported-and-tested-by: syzbot+5134cdf021c4ed5aaa5f@syzkaller.appspotmail.com Signed-off-by:Pavel Skripkin <paskripkin@gmail.com> Reviewed-by:
Håkon Bugge <haakon.bugge@oracle.com> Acked-by:
Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by:
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git://git.open-mesh.org/linux-mergeDavid S. Miller authored
Simon Wunderlich says: ==================== Here is a batman-adv bugfix: - Avoid WARN_ON timing related checks, by Sven Eckelmann ==================== Signed-off-by: -
Nicolas Dichtel authored
My initial goal was to fix the default MTU, which is set to 65536, ie above the maximum defined in the driver: 65535 (ETH_MAX_MTU). In fact, it's seems more consistent, wrt min_mtu, to set the max_mtu to IP6_MAX_MTU (65535 + sizeof(struct ipv6hdr)) and use it by default. Let's also, for consistency, set the mtu in vrf_setup(). This function calls ether_setup(), which set the mtu to 1500. Thus, the whole mtu config is done in the same function. Before the patch: $ ip link add blue type vrf table 1234 $ ip link list blue 9: blue: <NOARP,MASTER> mtu 65536 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether fa:f5:27:70:24:2a brd ff:ff:ff:ff:ff:ff $ ip link set dev blue mtu 65535 $ ip link set dev blue mtu 65536 Error: mtu greater than device maximum. Fixes: 5055376a ("net: vrf: Fix ping failed when vrf mtu is set to 0") CC: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by:Nicolas Dichtel <nicolas.dichtel@6wind.com> Reviewed-by:
David Ahern <dsahern@gmail.com> Signed-off-by:
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gushengxian authored
The preposition "for" should be changed to preposition "of". Signed-off-by:
gushengxian <gushengxian@yulong.com> Signed-off-by:
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Zheng Yongjun authored
When 'nla_parse_nested_deprecated' failed, it's no need to BUG() here, return -EINVAL is ok. Signed-off-by:
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Nanyong Sun authored
Reported by syzkaller: BUG: memory leak unreferenced object 0xffff888105df7000 (size 64): comm "syz-executor842", pid 360, jiffies 4294824824 (age 22.546s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000e67ed558>] kmalloc include/linux/slab.h:590 [inline] [<00000000e67ed558>] kzalloc include/linux/slab.h:720 [inline] [<00000000e67ed558>] netlbl_cipsov4_add_std net/netlabel/netlabel_cipso_v4.c:145 [inline] [<00000000e67ed558>] netlbl_cipsov4_add+0x390/0x2340 net/netlabel/netlabel_cipso_v4.c:416 [<0000000006040154>] genl_family_rcv_msg_doit.isra.0+0x20e/0x320 net/netlink/genetlink.c:739 [<00000000204d7a1c>] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] [<00000000204d7a1c>] genl_rcv_msg+0x2bf/0x4f0 net/netlink/genetlink.c:800 [<00000000c0d6a995>] netlink_rcv_skb+0x134/0x3d0 net/netlink/af_netlink.c:2504 [<00000000d78b9d2c>] genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 [<000000009733081b>] netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] [<000000009733081b>] netlink_unicast+0x4a0/0x6a0 net/netlink/af_netlink.c:1340 [<00000000d5fd43b8>] netlink_sendmsg+0x789/0xc70 net/netlink/af_netlink.c:1929 [<000000000a2d1e40>] sock_sendmsg_nosec net/socket.c:654 [inline] [<000000000a2d1e40>] sock_sendmsg+0x139/0x170 net/socket.c:674 [<00000000321d1969>] ____sys_sendmsg+0x658/0x7d0 net/socket.c:2350 [<00000000964e16bc>] ___sys_sendmsg+0xf8/0x170 net/socket.c:2404 [<000000001615e288>] __sys_sendmsg+0xd3/0x190 net/socket.c:2433 [<000000004ee8b6a5>] do_syscall_64+0x37/0x90 arch/x86/entry/common.c:47 [<00000000171c7cee>] entry_SYSCALL_64_after_hwframe+0x44/0xae The memory of doi_def->map.std pointing is allocated in netlbl_cipsov4_add_std, but no place has freed it. It should be freed in cipso_v4_doi_free which frees the cipso DOI resource. Fixes: 96cb8e33 ("[NetLabel]: CIPSOv4 and Unlabeled packet integration") Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
Nanyong Sun <sunnanyong@huawei.com> Acked-by:
Paul Moore <paul@paul-moore.com> Signed-off-by:
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Johannes Berg authored
Syzbot reports that when you have AP_VLAN interfaces that are up and close the AP interface they belong to, we get a deadlock. No surprise - since we dev_close() them with the wiphy mutex held, which goes back into the netdev notifier in cfg80211 and tries to acquire the wiphy mutex there. To fix this, we need to do two things: 1) prevent changing iftype while AP_VLANs are up, we can't easily fix this case since cfg80211 already calls us with the wiphy mutex held, but change_interface() is relatively rare in drivers anyway, so changing iftype isn't used much (and userspace has to fall back to down/change/up anyway) 2) pull the dev_close() loop over VLANs out of the wiphy mutex section in the normal stop case Cc: stable@vger.kernel.org Reported-by: syzbot+452ea4fbbef700ff0a56@syzkaller.appspotmail.com Fixes: a05829a7 ("cfg80211: avoid holding the RTNL when calling the driver") Link: https://lore.kernel.org/r/20210517160322.9b8f356c0222.I392cb0e2fa5a1a94cf2e637555d702c7e512c1ff@changeidSigned-off-by:
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