- 21 May, 2019 4 commits
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Jeffrin Jose T authored
A test for the basic NAT functionality uses ip command which needs veth device. There is a condition where the kernel support for veth is not compiled into the kernel and the test script breaks. This patch contains code for reasonable error display and correct code exit. Signed-off-by:
Jeffrin Jose T <jeffrin@rajagiritech.edu.in> Acked-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org>
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YueHaibing authored
BUG: KASAN: use-after-free in ip_vs_in.part.29+0xe8/0xd20 [ip_vs] Read of size 4 at addr ffff8881e9b26e2c by task sshd/5603 CPU: 0 PID: 5603 Comm: sshd Not tainted 4.19.39+ #30 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 Call Trace: dump_stack+0x71/0xab print_address_description+0x6a/0x270 kasan_report+0x179/0x2c0 ip_vs_in.part.29+0xe8/0xd20 [ip_vs] ip_vs_in+0xd8/0x170 [ip_vs] nf_hook_slow+0x5f/0xe0 __ip_local_out+0x1d5/0x250 ip_local_out+0x19/0x60 __tcp_transmit_skb+0xba1/0x14f0 tcp_write_xmit+0x41f/0x1ed0 ? _copy_from_iter_full+0xca/0x340 __tcp_push_pending_frames+0x52/0x140 tcp_sendmsg_locked+0x787/0x1600 ? tcp_sendpage+0x60/0x60 ? inet_sk_set_state+0xb0/0xb0 tcp_sendmsg+0x27/0x40 sock_sendmsg+0x6d/0x80 sock_write_iter+0x121/0x1c0 ? sock_sendmsg+0x80/0x80 __vfs_write+0x23e/0x370 vfs_write+0xe7/0x230 ksys_write+0xa1/0x120 ? __ia32_sys_read+0x50/0x50 ? __audit_syscall_exit+0x3ce/0x450 do_syscall_64+0x73/0x200 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7ff6f6147c60 Code: 73 01 c3 48 8b 0d 28 12 2d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 5d 73 2d 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 RSP: 002b:00007ffd772ead18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000034 RCX: 00007ff6f6147c60 RDX: 0000000000000034 RSI: 000055df30a31270 RDI: 0000000000000003 RBP: 000055df30a31270 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffd772ead70 R11: 0000000000000246 R12: 00007ffd772ead74 R13: 00007ffd772eae20 R14: 00007ffd772eae24 R15: 000055df2f12ddc0 Allocated by task 6052: kasan_kmalloc+0xa0/0xd0 __kmalloc+0x10a/0x220 ops_init+0x97/0x190 register_pernet_operations+0x1ac/0x360 register_pernet_subsys+0x24/0x40 0xffffffffc0ea016d do_one_initcall+0x8b/0x253 do_init_module+0xe3/0x335 load_module+0x2fc0/0x3890 __do_sys_finit_module+0x192/0x1c0 do_syscall_64+0x73/0x200 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Freed by task 6067: __kasan_slab_free+0x130/0x180 kfree+0x90/0x1a0 ops_free_list.part.7+0xa6/0xc0 unregister_pernet_operations+0x18b/0x1f0 unregister_pernet_subsys+0x1d/0x30 ip_vs_cleanup+0x1d/0xd2f [ip_vs] __x64_sys_delete_module+0x20c/0x300 do_syscall_64+0x73/0x200 entry_SYSCALL_64_after_hwframe+0x44/0xa9 The buggy address belongs to the object at ffff8881e9b26600 which belongs to the cache kmalloc-4096 of size 4096 The buggy address is located 2092 bytes inside of 4096-byte region [ffff8881e9b26600, ffff8881e9b27600) The buggy address belongs to the page: page:ffffea0007a6c800 count:1 mapcount:0 mapping:ffff888107c0e600 index:0x0 compound_mapcount: 0 flags: 0x17ffffc0008100(slab|head) raw: 0017ffffc0008100 dead000000000100 dead000000000200 ffff888107c0e600 raw: 0000000000000000 0000000080070007 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected while unregistering ipvs module, ops_free_list calls __ip_vs_cleanup, then nf_unregister_net_hooks be called to do remove nf hook entries. It need a RCU period to finish, however net->ipvs is set to NULL immediately, which will trigger NULL pointer dereference when a packet is hooked and handled by ip_vs_in where net->ipvs is dereferenced. Another scene is ops_free_list call ops_free to free the net_generic directly while __ip_vs_cleanup finished, then calling ip_vs_in will triggers use-after-free. This patch moves nf_unregister_net_hooks from __ip_vs_cleanup() to __ip_vs_dev_cleanup(), where rcu_barrier() is called by unregister_pernet_device -> unregister_pernet_operations, that will do the needed grace period. Reported-by:
Hulk Robot <hulkci@huawei.com> Fixes: efe41606 ("ipvs: convert to use pernet nf_hook api") Suggested-by:
Julian Anastasov <ja@ssi.bg> Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Acked-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
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Phil Sutter authored
NFTA_FIB_F_PRESENT flag was not always honored since eval functions did not call nft_fib_store_result in all cases. Given that in all callsites there is a struct net_device pointer available which holds the interface data to be stored in destination register, simplify nft_fib_store_result() to just accept that pointer instead of the nft_pktinfo pointer and interface index. This also allows to drop the index to interface lookup previously needed to get the name associated with given index. Fixes: 055c4b34 ("netfilter: nft_fib: Support existence check") Signed-off-by:
Phil Sutter <phil@nwl.cc> Signed-off-by:
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Jagdish Motwani authored
This patch fixes netfilter hook traversal when there are more than 1 hooks returning NF_QUEUE verdict. When the first queue reinjects the packet, 'nf_reinject' starts traversing hooks with a proper hook_index. However, if it again receives a NF_QUEUE verdict (by some other netfilter hook), it queues the packet with a wrong hook_index. So, when the second queue reinjects the packet, it re-executes hooks in between. Fixes: 960632ec ("netfilter: convert hook list to an array") Signed-off-by:
Jagdish Motwani <jagdish.motwani@sophos.com> Signed-off-by:
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- 20 May, 2019 1 commit
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Florian Westphal authored
We can oops in nf_tables_fill_rule_info(). Its not possible to fetch previous element in rcu-protected lists when deletions are not prevented somehow: list_del_rcu poisons the ->prev pointer value. Before rcu-conversion this was safe as dump operations did hold nfnetlink mutex. Pass previous rule as argument, obtained by keeping a pointer to the previous rule during traversal. Fixes: d9adf22a ("netfilter: nf_tables: use call_rcu in netlink dumps") Signed-off-by:
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- 18 May, 2019 4 commits
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David S. Miller authored
Ido Schimmel says: ==================== mlxsw: Two port module fixes Patch #1 fixes driver initialization failure on old ASICs due to unsupported register access. This is fixed by first testing if the register is supported. Patch #2 fixes reading of certain modules' EEPROM. The problem and solution are explained in detail in the commit message. Please consider both patches for stable. ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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Vadim Pasternak authored
Prevent reading unsupported slave address from SFP EEPROM by testing Diagnostic Monitoring Type byte in EEPROM. Read only page zero of EEPROM, in case this byte is zero. If some SFP transceiver does not support Digital Optical Monitoring (DOM), reading SFP EEPROM slave address 0x51 could return an error. Availability of DOM support is verified by reading from zero page Diagnostic Monitoring Type byte describing how diagnostic monitoring is implemented by transceiver. If bit 6 of this byte is set, it indicates that digital diagnostic monitoring has been implemented. Otherwise it is not and transceiver could fail to reply to transaction for slave address 0x51 [1010001X (A2h)], which is used to access measurements page. Such issue has been observed when reading cable MCP2M00-xxxx, MCP7F00-xxxx, and few others. Fixes: 2ea10903 ("mlxsw: spectrum: Add support for access cable info via ethtool") Fixes: 4400081b ("mlxsw: spectrum: Fix EEPROM access in case of SFP/SFP+") Signed-off-by:
Vadim Pasternak <vadimp@mellanox.com> Acked-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Signed-off-by:
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Vadim Pasternak authored
Old Mellanox silicons, like switchx-2, switch-ib do not support reading QSFP modules temperature through MTMP register. Attempt to access this register on systems equipped with the this kind of silicon will cause initialization flow failure. Test for hardware resource capability is added in order to distinct between old and new silicon - old silicons do not have such capability. Fixes: 6a79507c ("mlxsw: core: Extend thermal module with per QSFP module thermal zones") Fixes: 5c42eaa0 ("mlxsw: core: Extend hwmon interface with QSFP module temperature attributes") Reported-by:
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Jorge E. Moreira authored
Avoid a race in which static variables in net/vmw_vsock/af_vsock.c are accessed (while handling interrupts) before they are initialized. [ 4.201410] BUG: unable to handle kernel paging request at ffffffffffffffe8 [ 4.207829] IP: vsock_addr_equals_addr+0x3/0x20 [ 4.211379] PGD 28210067 P4D 28210067 PUD 28212067 PMD 0 [ 4.211379] Oops: 0000 [#1] PREEMPT SMP PTI [ 4.211379] Modules linked in: [ 4.211379] CPU: 1 PID: 30 Comm: kworker/1:1 Not tainted 4.14.106-419297-gd7e28cc1f241 #1 [ 4.211379] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 4.211379] Workqueue: virtio_vsock virtio_transport_rx_work [ 4.211379] task: ffffa3273d175280 task.stack: ffffaea1800e8000 [ 4.211379] RIP: 0010:vsock_addr_equals_addr+0x3/0x20 [ 4.211379] RSP: 0000:ffffaea1800ebd28 EFLAGS: 00010286 [ 4.211379] RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffffb94e42f0 [ 4.211379] RDX: 0000000000000400 RSI: ffffffffffffffe0 RDI: ffffaea1800ebdd0 [ 4.211379] RBP: ffffaea1800ebd58 R08: 0000000000000001 R09: 0000000000000001 [ 4.211379] R10: 0000000000000000 R11: ffffffffb89d5d60 R12: ffffaea1800ebdd0 [ 4.211379] R13: 00000000828cbfbf R14: 0000000000000000 R15: ffffaea1800ebdc0 [ 4.211379] FS: 0000000000000000(0000) GS:ffffa3273fd00000(0000) knlGS:0000000000000000 [ 4.211379] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4.211379] CR2: ffffffffffffffe8 CR3: 000000002820e001 CR4: 00000000001606e0 [ 4.211379] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 4.211379] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 4.211379] Call Trace: [ 4.211379] ? vsock_find_connected_socket+0x6c/0xe0 [ 4.211379] virtio_transport_recv_pkt+0x15f/0x740 [ 4.211379] ? detach_buf+0x1b5/0x210 [ 4.211379] virtio_transport_rx_work+0xb7/0x140 [ 4.211379] process_one_work+0x1ef/0x480 [ 4.211379] worker_thread+0x312/0x460 [ 4.211379] kthread+0x132/0x140 [ 4.211379] ? process_one_work+0x480/0x480 [ 4.211379] ? kthread_destroy_worker+0xd0/0xd0 [ 4.211379] ret_from_fork+0x35/0x40 [ 4.211379] Code: c7 47 08 00 00 00 00 66 c7 07 28 00 c7 47 08 ff ff ff ff c7 47 04 ff ff ff ff c3 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 8b 47 08 <3b> 46 08 75 0a 8b 47 04 3b 46 04 0f 94 c0 c3 31 c0 c3 90 66 2e [ 4.211379] RIP: vsock_addr_equals_addr+0x3/0x20 RSP: ffffaea1800ebd28 [ 4.211379] CR2: ffffffffffffffe8 [ 4.211379] ---[ end trace f31cc4a2e6df3689 ]--- [ 4.211379] Kernel panic - not syncing: Fatal exception in interrupt [ 4.211379] Kernel Offset: 0x37000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 4.211379] Rebooting in 5 seconds.. Fixes: 22b5c0b6 ("vsock/virtio: fix kernel panic after device hot-unplug") Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: Stefano Garzarella <sgarzare@redhat.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: kvm@vger.kernel.org Cc: virtualization@lists.linux-foundation.org Cc: netdev@vger.kernel.org Cc: kernel-team@android.com Cc: stable@vger.kernel.org [4.9+] Signed-off-by:
Jorge E. Moreira <jemoreira@google.com> Reviewed-by:
Stefano Garzarella <sgarzare@redhat.com> Reviewed-by:
Stefan Hajnoczi <stefanha@redhat.com> Acked-by:
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- 17 May, 2019 20 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller authored
Daniel Borkmann says: ==================== pull-request: bpf 2019-05-18 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) Fix bpftool's raw BTF dump in relation to forward declarations of union/ structs, and another fix to unexport logging helpers, from Andrii. 2) Fix inode permission check for retrieving bpf programs, from Chenbo. 3) Fix bpftool to raise rlimit earlier as otherwise libbpf's feature probing can fail and subsequently it refuses to load an object, from Yonghong. 4) Fix declaration of bpf_get_current_task() in kselftests, from Alexei. 5) Fix up BPF kselftest .gitignore to add generated files, from Stanislav. ==================== Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
Saeed Mahameed says: ==================== Mellanox, mlx5 fixes 2019-05-17 This series introduces some fixes to mlx5 driver. For more information please see tag log below. Please pull and let me know if there is any problem. For -stable v4.19 net/mlx5e: Fix ethtool rxfh commands when CONFIG_MLX5_EN_RXNFC is disabled net/mlx5: Imply MLXFW in mlx5_core For -stable v5.0 net/mlx5e: Add missing ethtool driver info for representors net/mlx5e: Additional check for flow destination comparison For -stable v5.1 net/mlx5: Fix peer pf disable hca command ==================== Signed-off-by: -
Eli Britstein authored
The cited commit could disable the modify header flag, but did not free the allocated memory for the modify header actions. Fix it. Fixes: 27c11b6b ("net/mlx5e: Do not rewrite fields with the same match") Signed-off-by:
Eli Britstein <elibr@mellanox.com> Reviewed-by:
Roi Dayan <roid@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com>
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Eli Britstein authored
With commit 27c11b6b ("net/mlx5e: Do not rewrite fields with the same match") there are no rewrites if the rewrite value is the same as the matched value. However, if the field is not matched, the rewrite is also wrongly skipped. Fix it. Fixes: 27c11b6b ("net/mlx5e: Do not rewrite fields with the same match") Signed-off-by:
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Dmytro Linkin authored
Flow destination comparison has an inaccuracy: code see no difference between same vf ports, which belong to different pfs. Example: If start ping from VF0 (PF1) to VF1 (PF1) and mirror all traffic to VF0 (PF2), icmp reply to VF0 (PF1) and mirrored flow to VF0 (PF2) would be determined as same destination. It lead to creating flow handler with rule nodes, which not added to node tree. When later driver try to delete this flow rules we got kernel crash. Add comparison of vhca_id field to avoid this. Fixes: 1228e912 ("net/mlx5: Consider encapsulation properties when comparing destinations") Signed-off-by:
Dmytro Linkin <dmitrolin@mellanox.com> Reviewed-by:
Vlad Buslov <vladbu@mellanox.com> Signed-off-by:
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Dmytro Linkin authored
For all representors added firmware version info to show in ethtool driver info. For uplink representor, because only it is tied to the pci device sysfs, added pci bus info. Fixes: ff9b85de ("net/mlx5e: Add some ethtool port control entries to the uplink rep netdev") Signed-off-by:
Gavi Teitz <gavi@mellanox.com> Reviewed-by:
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Eli Britstein authored
With the cited commit, ACLs are configured for the VF ports. The loop for the number of ports had the wrong number. Fix it. Fixes: 18486737 ("net/mlx5e: ACLs for priority tag mode") Signed-off-by:
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Saeed Mahameed authored
ethtool user spaces needs to know ring count via ETHTOOL_GRXRINGS when executing (ethtool -x) which is retrieved via ethtool get_rxnfc callback, in mlx5 this callback is disabled when CONFIG_MLX5_EN_RXNFC=n. This patch allows only ETHTOOL_GRXRINGS command on mlx5e_get_rxnfc() when CONFIG_MLX5_EN_RXNFC is disabled, so ethtool -x will continue working. Fixes: fe6d86b3 ("net/mlx5e: Add CONFIG_MLX5_EN_RXNFC for ethtool rx nfc") Signed-off-by:
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Tariq Toukan authored
Cited patch refactored the xmit_more indication while not preserving its functionality. Fix it. Fixes: 3c31ff22 ("drivers: mellanox: use netdev_xmit_more() helper") Signed-off-by:
Tariq Toukan <tariqt@mellanox.com> Signed-off-by:
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Bodong Wang authored
The command was mistakenly using enable_hca in embedded CPU field. Fixes: 22e939a9 (net/mlx5: Update enable HCA dependency) Signed-off-by:
Bodong Wang <bodong@mellanox.com> Reported-by:
Alex Rosenbaum <alexr@mellanox.com> Signed-off-by:
Daniel Jurgens <danielj@mellanox.com> Signed-off-by:
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Parav Pandit authored
To avoid any ambiguity between vport index and vport number, rename functions that had vport, to vport_num or vport_index appropriately. vport_num is u16 hence change mlx5_eswitch_index_to_vport_num() return type to u16. vport_index is an int in vport array. Hence change input type of vport index in mlx5_eswitch_index_to_vport_num() to int. Correct multiple eswitch representor interfaces use type u16 of rep->vport as type int vport_index. Send vport FW commands with correct eswitch u16 vport_num instead host int vport_index. Fixes: 5ae51620 ("net/mlx5: E-Switch, Assign a different position for uplink rep and vport") Signed-off-by:
Parav Pandit <parav@mellanox.com> Signed-off-by:
Vu Pham <vuhuong@mellanox.com> Reviewed-by:
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Valentine Fatiev authored
Current version of function status_to_err return -1 for any status returned by mlx5_cmd_invoke function. In case status is MLX5_DRIVER_STATUS_ABORTED we should return 0 to the caller as we assume command completed successfully on FW. If error returned we are getting confusing messages in dmesg. In addition, currently returned value -1 is confusing with -EPERM. New implementation actually fix original commit and return meaningful codes for commands delivery status and print message in case of failure. Fixes: e126ba97 ("mlx5: Add driver for Mellanox Connect-IB adapters") Signed-off-by:
Valentine Fatiev <valentinef@mellanox.com> Signed-off-by:
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Saeed Mahameed authored
mlxfw can be compiled as external module while mlx5_core can be builtin, in such case mlx5 will act like mlxfw is disabled. Since mlxfw is just a service library for mlx* drivers, imply it in mlx5_core to make it always reachable if it was enabled. Fixes: 3ffaabec ("net/mlx5e: Support the flash device ethtool callback") Signed-off-by:
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David S. Miller authored
This reverts commit 532b0f7e. More revisions coming up. Signed-off-by:
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Stefano Garzarella authored
When the socket is released, we should free all packets queued in the per-socket list in order to avoid a memory leak. Signed-off-by:
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Junwei Hu authored
Error message printed: modprobe: ERROR: could not insert 'tipc': Address family not supported by protocol. when modprobe tipc after the following patch: switch order of device registration, commit 7e27e8d6 ("tipc: switch order of device registration to fix a crash") Because sock_create_kern(net, AF_TIPC, ...) is called by tipc_topsrv_create_listener() in the initialization process of tipc_net_ops, tipc_socket_init() must be execute before that. I move tipc_socket_init() into function tipc_init_net(). Fixes: 7e27e8d6 ("tipc: switch order of device registration to fix a crash") Signed-off-by:
Junwei Hu <hujunwei4@huawei.com> Reported-by:
Wang Wang <wangwang2@huawei.com> Reviewed-by:
Kang Zhou <zhoukang7@huawei.com> Reviewed-by:
Suanming Mou <mousuanming@huawei.com> Signed-off-by:
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Philippe Mazenauer authored
Variable 'entropy' was wrongly documented as 'seed', changed comment to reflect actual variable name. ../lib/random32.c:179: warning: Function parameter or member 'entropy' not described in 'prandom_seed' ../lib/random32.c:179: warning: Excess function parameter 'seed' description in 'prandom_seed' Signed-off-by:
Philippe Mazenauer <philippe.mazenauer@outlook.de> Acked-by:
Lee Jones <lee.jones@linaro.org> Signed-off-by:
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swkhack authored
Because the function snprintf write at most size bytes(including the null byte).So the value of the argument size need not to minus one. Signed-off-by:
swkhack <swkhack@gmail.com> Signed-off-by:
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Andrii Nakryiko authored
kflag bit determines whether FWD is for struct or union. Use that bit. Fixes: c93cc690 ("bpftool: add ability to dump BTF types") Signed-off-by:
Andrii Nakryiko <andriin@fb.com> Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net>
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Alexei Starovoitov authored
Fix bpf_get_current_task() declaration. Signed-off-by:
Alexei Starovoitov <ast@kernel.org> Acked-by:
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- 16 May, 2019 11 commits
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Wei Wang authored
When inserting route cache into the exception table, the key is generated with both src_addr and dest_addr with src addr routing. However, current logic always assumes the src_addr used to generate the key is a /128 host address. This is not true in the following scenarios: 1. When the route is a gateway route or does not have next hop. (rt6_is_gw_or_nonexthop() == false) 2. When calling ip6_rt_cache_alloc(), saddr is passed in as NULL. This means, when looking for a route cache in the exception table, we have to do the lookup twice: first time with the passed in /128 host address, second time with the src_addr stored in fib6_info. This solves the pmtu discovery issue reported by Mikael Magnusson where a route cache with a lower mtu info is created for a gateway route with src addr. However, the lookup code is not able to find this route cache. Fixes: 2b760fcf ("ipv6: hook up exception table to store dst cache") Reported-by:
Mikael Magnusson <mikael.kernel@lists.m7n.se> Bisected-by:
David Ahern <dsahern@gmail.com> Signed-off-by:
Wei Wang <weiwan@google.com> Cc: Martin Lau <kafai@fb.com> Cc: Eric Dumazet <edumazet@google.com> Acked-by:
Martin KaFai Lau <kafai@fb.com> Signed-off-by:
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David Ahern authored
The first command in setup_xfrm is failing resulting in the test getting skipped: + ip netns exec ns-B ip -6 xfrm state add src fd00:1::a dst fd00:1::b spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel + out=RTNETLINK answers: Function not implemented ... xfrm6 not supported TEST: vti6: PMTU exceptions [SKIP] xfrm4 not supported TEST: vti4: PMTU exceptions [SKIP] ... The setup command started failing when the run_cmd option was added. Removing the quotes fixes the problem: ... TEST: vti6: PMTU exceptions [ OK ] TEST: vti4: PMTU exceptions [ OK ] ... Fixes: 56490b62 ("selftests: Add debugging options to pmtu.sh") Signed-off-by:
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Eric Dumazet authored
When host is under high stress, it is very possible thread running netdev_wait_allrefs() returns from msleep(250) 10 seconds late. This leads to these messages in the syslog : [...] unregister_netdevice: waiting for syz_tun to become free. Usage count = 0 If the device refcount is zero, the wait is over. Signed-off-by:
Eric Dumazet <edumazet@google.com> Reported-by:
syzbot <syzkaller@googlegroups.com> Signed-off-by:
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David S. Miller authored
Igor Russkikh says: ==================== aqc111: revert endianess fixes and cleanup mtu logic This reverts no-op commits as it was discussed: https://lore.kernel.org/netdev/1557839644.11261.4.camel@suse.com/ First and second original patches are already dropped from stable, No need to stable-queue the third patch as it has no functional impact, just a logic cleanup. ==================== Signed-off-by:
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Igor Russkikh authored
Original fix b8b27752 was done under impression that invalid data could be written for mtu configuration higher that 16334. But the high limit will anyway be rejected my max_mtu check in caller. Thus, make the code cleaner and allow it doing the configuration without checking for maximum mtu value. Fixes: b8b27752 ("aqc111: fix endianness issue in aqc111_change_mtu") Signed-off-by:
Igor Russkikh <igor.russkikh@aquantia.com> Signed-off-by:
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Igor Russkikh authored
This reverts commit 369b46e9. The required temporary storage is already done inside of write32/16 helpers. Signed-off-by:
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Igor Russkikh authored
This reverts commit 2cf67270. The required temporary storage is already done inside of write32/16 helpers. Signed-off-by:
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Florian Westphal authored
This resurrects commit 8742dc86 ("xfrm4: Fix uninitialized memory read in _decode_session4"), which got lost during a merge conflict resolution between ipsec-next and net-next tree. c53ac41e ("xfrm: remove decode_session indirection from afinfo_policy") in ipsec-next moved the (buggy) _decode_session4 from net/ipv4/xfrm4_policy.c to net/xfrm/xfrm_policy.c. In mean time, 8742dc86 was applied to ipsec.git and fixed the problem in the "old" location. When the trees got merged, the moved, old function was kept. This applies the "lost" commit again, to the new location. Fixes: a658a3f2 ("Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next") Reported-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Andrii Nakryiko authored
libbpf_util.h header was recently exposed as public as a dependency of xsk.h. In addition to memory barriers, it contained logging helpers, which are not supposed to be exposed. This patch moves those into libbpf_internal.h, which is kept as an internal header. Cc: Stanislav Fomichev <sdf@google.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Fixes: 7080da89 ("libbpf: add libbpf_util.h to header install.") Signed-off-by:
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Junwei Hu authored
When tipc is loaded while many processes try to create a TIPC socket, a crash occurs: PANIC: Unable to handle kernel paging request at virtual address "dfff20000000021d" pc : tipc_sk_create+0x374/0x1180 [tipc] lr : tipc_sk_create+0x374/0x1180 [tipc] Exception class = DABT (current EL), IL = 32 bits Call trace: tipc_sk_create+0x374/0x1180 [tipc] __sock_create+0x1cc/0x408 __sys_socket+0xec/0x1f0 __arm64_sys_socket+0x74/0xa8 ... This is due to race between sock_create and unfinished register_pernet_device. tipc_sk_insert tries to do "net_generic(net, tipc_net_id)". but tipc_net_id is not initialized yet. So switch the order of the two to close the race. This can be reproduced with multiple processes doing socket(AF_TIPC, ...) and one process doing module removal. Fixes: a62fbcce ("tipc: make subscriber server support net namespace") Signed-off-by:
Xiaogang Wang <wangxiaogang3@huawei.com> Signed-off-by:
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Eric Dumazet authored
At ipv6 route dismantle, fib6_drop_pcpu_from() is responsible for finding all percpu routes and set their ->from pointer to NULL, so that fib6_ref can reach its expected value (1). The problem right now is that other cpus can still catch the route being deleted, since there is no rcu grace period between the route deletion and call to fib6_drop_pcpu_from() This can leak the fib6 and associated resources, since no notifier will take care of removing the last reference(s). I decided to add another boolean (fib6_destroying) instead of reusing/renaming exception_bucket_flushed to ease stable backports, and properly document the memory barriers used to implement this fix. This patch has been co-developped with Wei Wang. Fixes: 93531c67 ("net/ipv6: separate handling of FIB entries from dst based routes") Signed-off-by:
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