- 10 Oct, 2024 10 commits
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Jakub Kicinski authored
Matthieu Baerts says: ==================== mptcp: misc. fixes involving fallback to TCP - Patch 1: better handle DSS corruptions from a bugged peer: reducing warnings, doing a fallback or a reset depending on the subflow state. For >= v5.7. - Patch 2: fix DSS corruption due to large pmtu xmit, where MPTCP was not taken into account. For >= v5.6. - Patch 3: fallback when MPTCP opts are dropped after the first data packet, instead of resetting the connection. For >= v5.6. - Patch 4: restrict the removal of a subflow to other closing states, a better fix, for a recent one. For >= v5.10. ==================== Link: https://patch.msgid.link/20241008-net-mptcp-fallback-fixes-v1-0-c6fb8e93e551@kernel.orgSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
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Matthieu Baerts (NGI0) authored
In a previous fix, the in-kernel path-manager has been modified not to retrigger the removal of a subflow if it was already closed, e.g. when the initial subflow is removed, but kept in the subflows list. To be complete, this fix should also skip the subflows that are in any closing state: mptcp_close_ssk() will initiate the closure, but the switch to the TCP_CLOSE state depends on the other peer. Fixes: 58e1b66b ("mptcp: pm: do not remove already closed subflows") Cc: stable@vger.kernel.org Suggested-by:
Paolo Abeni <pabeni@redhat.com> Acked-by:
Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20241008-net-mptcp-fallback-fixes-v1-4-c6fb8e93e551@kernel.orgSigned-off-by:
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Matthieu Baerts (NGI0) authored
As reported by Christoph [1], before this patch, an MPTCP connection was wrongly reset when a host received a first data packet with MPTCP options after the 3wHS, but got the next ones without. According to the MPTCP v1 specs [2], a fallback should happen in this case, because the host didn't receive a DATA_ACK from the other peer, nor receive data for more than the initial window which implies a DATA_ACK being received by the other peer. The patch here re-uses the same logic as the one used in other places: by looking at allow_infinite_fallback, which is disabled at the creation of an additional subflow. It's not looking at the first DATA_ACK (or implying one received from the other side) as suggested by the RFC, but it is in continuation with what was already done, which is safer, and it fixes the reported issue. The next step, looking at this first DATA_ACK, is tracked in [4]. This patch has been validated using the following Packetdrill script: 0 socket(..., SOCK_STREAM, IPPROTO_MPTCP) = 3 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 +0 bind(3, ..., ...) = 0 +0 listen(3, 1) = 0 // 3WHS is OK +0.0 < S 0:0(0) win 65535 <mss 1460, sackOK, nop, nop, nop, wscale 6, mpcapable v1 flags[flag_h] nokey> +0.0 > S. 0:0(0) ack 1 <mss 1460, nop, nop, sackOK, nop, wscale 8, mpcapable v1 flags[flag_h] key[skey]> +0.1 < . 1:1(0) ack 1 win 2048 <mpcapable v1 flags[flag_h] key[ckey=2, skey]> +0 accept(3, ..., ...) = 4 // Data from the client with valid MPTCP options (no DATA_ACK: normal) +0.1 < P. 1:501(500) ack 1 win 2048 <mpcapable v1 flags[flag_h] key[skey, ckey] mpcdatalen 500, nop, nop> // From here, the MPTCP options will be dropped by a middlebox +0.0 > . 1:1(0) ack 501 <dss dack8=501 dll=0 nocs> +0.1 read(4, ..., 500) = 500 +0 write(4, ..., 100) = 100 // The server replies with data, still thinking MPTCP is being used +0.0 > P. 1:101(100) ack 501 <dss dack8=501 dsn8=1 ssn=1 dll=100 nocs, nop, nop> // But the client already did a fallback to TCP, because the two previous packets have been received without MPTCP options +0.1 < . 501:501(0) ack 101 win 2048 +0.0 < P. 501:601(100) ack 101 win 2048 // The server should fallback to TCP, not reset: it didn't get a DATA_ACK, nor data for more than the initial window +0.0 > . 101:101(0) ack 601 Note that this script requires Packetdrill with MPTCP support, see [3]. Fixes: dea2b1ea ("mptcp: do not reset MP_CAPABLE subflow on mapping errors") Cc: stable@vger.kernel.org Reported-by:
Christoph Paasch <cpaasch@apple.com> Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/518 [1] Link: https://datatracker.ietf.org/doc/html/rfc8684#name-fallback [2] Link: https://github.com/multipath-tcp/packetdrill [3] Link: https://github.com/multipath-tcp/mptcp_net-next/issues/519 [4] Reviewed-by:
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Paolo Abeni authored
Syzkaller was able to trigger a DSS corruption: TCP: request_sock_subflow_v4: Possible SYN flooding on port [::]:20002. Sending cookies. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5227 at net/mptcp/protocol.c:695 __mptcp_move_skbs_from_subflow+0x20a9/0x21f0 net/mptcp/protocol.c:695 Modules linked in: CPU: 0 UID: 0 PID: 5227 Comm: syz-executor350 Not tainted 6.11.0-syzkaller-08829-gaf9c191a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:__mptcp_move_skbs_from_subflow+0x20a9/0x21f0 net/mptcp/protocol.c:695 Code: 0f b6 dc 31 ff 89 de e8 b5 dd ea f5 89 d8 48 81 c4 50 01 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 98 da ea f5 90 <0f> 0b 90 e9 47 ff ff ff e8 8a da ea f5 90 0f 0b 90 e9 99 e0 ff ff RSP: 0018:ffffc90000006db8 EFLAGS: 00010246 RAX: ffffffff8ba9df18 RBX: 00000000000055f0 RCX: ffff888030023c00 RDX: 0000000000000100 RSI: 00000000000081e5 RDI: 00000000000055f0 RBP: 1ffff110062bf1ae R08: ffffffff8ba9cf12 R09: 1ffff110062bf1b8 R10: dffffc0000000000 R11: ffffed10062bf1b9 R12: 0000000000000000 R13: dffffc0000000000 R14: 00000000700cec61 R15: 00000000000081e5 FS: 000055556679c380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020287000 CR3: 0000000077892000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> move_skbs_to_msk net/mptcp/protocol.c:811 [inline] mptcp_data_ready+0x29c/0xa90 net/mptcp/protocol.c:854 subflow_data_ready+0x34a/0x920 net/mptcp/subflow.c:1490 tcp_data_queue+0x20fd/0x76c0 net/ipv4/tcp_input.c:5283 tcp_rcv_established+0xfba/0x2020 net/ipv4/tcp_input.c:6237 tcp_v4_do_rcv+0x96d/0xc70 net/ipv4/tcp_ipv4.c:1915 tcp_v4_rcv+0x2dc0/0x37f0 net/ipv4/tcp_ipv4.c:2350 ip_protocol_deliver_rcu+0x22e/0x440 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x341/0x5f0 net/ipv4/ip_input.c:233 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5662 [inline] __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5775 process_backlog+0x662/0x15b0 net/core/dev.c:6107 __napi_poll+0xcb/0x490 net/core/dev.c:6771 napi_poll net/core/dev.c:6840 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6962 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 do_softirq+0x11b/0x1e0 kernel/softirq.c:455 </IRQ> <TASK> __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline] __dev_queue_xmit+0x1764/0x3e80 net/core/dev.c:4451 dev_queue_xmit include/linux/netdevice.h:3094 [inline] neigh_hh_output include/net/neighbour.h:526 [inline] neigh_output include/net/neighbour.h:540 [inline] ip_finish_output2+0xd41/0x1390 net/ipv4/ip_output.c:236 ip_local_out net/ipv4/ip_output.c:130 [inline] __ip_queue_xmit+0x118c/0x1b80 net/ipv4/ip_output.c:536 __tcp_transmit_skb+0x2544/0x3b30 net/ipv4/tcp_output.c:1466 tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline] tcp_mtu_probe net/ipv4/tcp_output.c:2547 [inline] tcp_write_xmit+0x641d/0x6bf0 net/ipv4/tcp_output.c:2752 __tcp_push_pending_frames+0x9b/0x360 net/ipv4/tcp_output.c:3015 tcp_push_pending_frames include/net/tcp.h:2107 [inline] tcp_data_snd_check net/ipv4/tcp_input.c:5714 [inline] tcp_rcv_established+0x1026/0x2020 net/ipv4/tcp_input.c:6239 tcp_v4_do_rcv+0x96d/0xc70 net/ipv4/tcp_ipv4.c:1915 sk_backlog_rcv include/net/sock.h:1113 [inline] __release_sock+0x214/0x350 net/core/sock.c:3072 release_sock+0x61/0x1f0 net/core/sock.c:3626 mptcp_push_release net/mptcp/protocol.c:1486 [inline] __mptcp_push_pending+0x6b5/0x9f0 net/mptcp/protocol.c:1625 mptcp_sendmsg+0x10bb/0x1b10 net/mptcp/protocol.c:1903 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2603 ___sys_sendmsg net/socket.c:2657 [inline] __sys_sendmsg+0x2aa/0x390 net/socket.c:2686 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb06e9317f9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe2cfd4f98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb06e97f468 RCX: 00007fb06e9317f9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000005 RBP: 00007fb06e97f446 R08: 0000555500000000 R09: 0000555500000000 R10: 0000555500000000 R11: 0000000000000246 R12: 00007fb06e97f406 R13: 0000000000000001 R14: 00007ffe2cfd4fe0 R15: 0000000000000003 </TASK> Additionally syzkaller provided a nice reproducer. The repro enables pmtu on the loopback device, leading to tcp_mtu_probe() generating very large probe packets. tcp_can_coalesce_send_queue_head() currently does not check for mptcp-level invariants, and allowed the creation of cross-DSS probes, leading to the mentioned corruption. Address the issue teaching tcp_can_coalesce_send_queue_head() about mptcp using the tcp_skb_can_collapse(), also reducing the code duplication. Fixes: 85712484 ("tcp: coalesce/collapse must respect MPTCP extensions") Cc: stable@vger.kernel.org Reported-by: syzbot+d1bff73460e33101f0e7@syzkaller.appspotmail.com Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/513Signed-off-by:
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Paolo Abeni authored
Bugged peer implementation can send corrupted DSS options, consistently hitting a few warning in the data path. Use DEBUG_NET assertions, to avoid the splat on some builds and handle consistently the error, dumping related MIBs and performing fallback and/or reset according to the subflow type. Fixes: 6771bfd9 ("mptcp: update mptcp ack sequence from work queue") Cc: stable@vger.kernel.org Signed-off-by:
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Breno Leitao authored
A warning is triggered when there is insufficient space in the buffer for userdata. However, this is not an issue since userdata will be sent in the next iteration. Current warning message: ------------[ cut here ]------------ WARNING: CPU: 13 PID: 3013042 at drivers/net/netconsole.c:1122 write_ext_msg+0x3b6/0x3d0 ? write_ext_msg+0x3b6/0x3d0 console_flush_all+0x1e9/0x330 The code incorrectly issues a warning when this_chunk is zero, which is a valid scenario. The warning should only be triggered when this_chunk is negative. Fixes: 1ec9daf9 ("net: netconsole: append userdata to fragmented netconsole messages") Signed-off-by:Breno Leitao <leitao@debian.org> Reviewed-by:
Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20241008094325.896208-1-leitao@debian.orgSigned-off-by:
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Vladimir Oltean authored
In case of a tc mirred action from one switch to another, the behavior is not correct. We simply tell the source switch driver to program a mirroring entry towards mirror->to_local_port = to_dp->index, but it is not even guaranteed that the to_dp belongs to the same switch as dp. For proper cross-chip support, we would need to go through the cross-chip notifier layer in switch.c, program the entry on cascade ports, and introduce new, explicit API for cross-chip mirroring, given that intermediary switches should have introspection into the DSA tags passed through the cascade port (and not just program a port mirror on the entire cascade port). None of that exists today. Reject what is not implemented so that user space is not misled into thinking it works. Fixes: f50f2127 ("net: dsa: Add plumbing for port mirroring") Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/20241008094320.3340980-1-vladimir.oltean@nxp.comSigned-off-by:
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Wei Fang authored
Some platforms (such as i.MX25 and i.MX27) do not support PTP, so on these platforms fec_ptp_init() is not called and the related members in fep are not initialized. However, fec_ptp_save_state() is called unconditionally, which causes the kernel to panic. Therefore, add a condition so that fec_ptp_save_state() is not called if PTP is not supported. Fixes: a1477dc8 ("net: fec: Restart PPS after link state change") Reported-by:
Guenter Roeck <linux@roeck-us.net> Closes: https://lore.kernel.org/lkml/353e41fe-6bb4-4ee9-9980-2da2a9c1c508@roeck-us.net/Signed-off-by:
Wei Fang <wei.fang@nxp.com> Reviewed-by:
Csókás, Bence <csokas.bence@prolan.hu> Reviewed-by:
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Rosen Penev authored
It's done in probe so it should be undone here. Fixes: 1d3bb996 ("Device tree aware EMAC driver") Signed-off-by:
Rosen Penev <rosenp@gmail.com> Reviewed-by:
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Jacky Chou authored
Add error handling from calling fixed_phy_register. It may return some error, therefore, need to check the status. And fixed_phy_register needs to bind a device node for mdio. Add the mac device node for fixed_phy_register function. This is a reference to this function, of_phy_register_fixed_link(). Fixes: e24a6c87 ("net: ftgmac100: Get link speed and duplex for NC-SI") Signed-off-by:
Jacky Chou <jacky_chou@aspeedtech.com> Link: https://patch.msgid.link/20241007032435.787892-1-jacky_chou@aspeedtech.comSigned-off-by:
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- 09 Oct, 2024 6 commits
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Jijie Shao authored
Yisen Zhuang has left the company in September. Jian Shen will be responsible for maintaining the hns3/hns driver's code in the future, so add Jian Shen to the hns3/hns driver's matainer list. Signed-off-by:
Jijie Shao <shaojijie@huawei.com> Reviewed-by:
David S. Miller <davem@davemloft.net>
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Xin Long authored
If hashing fails in sctp_listen_start(), the socket remains in the LISTENING state, even though it was not added to the hash table. This can lead to a scenario where a socket appears to be listening without actually being accessible. This patch ensures that if the hashing operation fails, the sk_state is set back to CLOSED before returning an error. Note that there is no need to undo the autobind operation if hashing fails, as the bind port can still be used for next listen() call on the same socket. Fixes: 76c6d988 ("sctp: add sock_reuseport for the sock in __sctp_hash_endpoint") Reported-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
Xin Long <lucien.xin@gmail.com> Acked-by:
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Daniel Palmer authored
Currently this driver prints this line with what looks like a rogue format specifier when the device is probed: [ 2.840000] eth%d: MVME147 at 0xfffe1800, irq 12, Hardware Address xx:xx:xx:xx:xx:xx Change the printk() for netdev_info() and move it after the registration has completed so it prints out the name of the interface properly. Signed-off-by:
Daniel Palmer <daniel@0x0f.com> Reviewed-by:
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Heiner Kallweit authored
All MMD reads return 0 for the RTL8126A-integrated PHY. Therefore phylib assumes it doesn't support EEE, what results in higher power consumption, and a significantly higher chip temperature in my case. To fix this split out the PHY driver for the RTL8126A-integrated PHY and set the read_mmd/write_mmd callbacks to read from vendor-specific registers. Fixes: 5befa372 ("net: phy: realtek: add support for RTL8126A-integrated 5Gbps PHY") Cc: stable@vger.kernel.org Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by:
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MD Danish Anwar authored
The VLAN table is a shared memory between the two ports/slices in a ICSSG cluster and this may lead to race condition when the common code paths for both ports are executed in different CPUs. Fix the race condition access by locking the shared memory access Fixes: 487f7323 ("net: ti: icssg-prueth: Add helper functions to configure FDB") Signed-off-by:
MD Danish Anwar <danishanwar@ti.com> Reviewed-by:
Roger Quadros <rogerq@kernel.org> Signed-off-by:
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Rosen Penev authored
dcr_map is called in the previous if and therefore needs to be unmapped. Fixes: 1ff0fcfc ("ibm_newemac: Fix new MAL feature handling") Signed-off-by:
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- 08 Oct, 2024 18 commits
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Eric Dumazet authored
Most qdiscs maintain their backlog using qdisc_pkt_len(skb) on the assumption it is invariant between the enqueue() and dequeue() handlers. Unfortunately syzbot can crash a host rather easily using a TBF + SFQ combination, with an STAB on SFQ [1] We can't support TCA_STAB on arbitrary level, this would require to maintain per-qdisc storage. [1] [ 88.796496] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 88.798611] #PF: supervisor read access in kernel mode [ 88.799014] #PF: error_code(0x0000) - not-present page [ 88.799506] PGD 0 P4D 0 [ 88.799829] Oops: Oops: 0000 [#1] SMP NOPTI [ 88.800569] CPU: 14 UID: 0 PID: 2053 Comm: b371744477 Not tainted 6.12.0-rc1-virtme #1117 [ 88.801107] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 88.801779] RIP: 0010:sfq_dequeue (net/sched/sch_sfq.c:272 net/sched/sch_sfq.c:499) sch_sfq [ 88.802544] Code: 0f b7 50 12 48 8d 04 d5 00 00 00 00 48 89 d6 48 29 d0 48 8b 91 c0 01 00 00 48 c1 e0 03 48 01 c2 66 83 7a 1a 00 7e c0 48 8b 3a <4c> 8b 07 4c 89 02 49 89 50 08 48 c7 47 08 00 00 00 00 48 c7 07 00 All code ======== 0: 0f b7 50 12 movzwl 0x12(%rax),%edx 4: 48 8d 04 d5 00 00 00 lea 0x0(,%rdx,8),%rax b: 00 c: 48 89 d6 mov %rdx,%rsi f: 48 29 d0 sub %rdx,%rax 12: 48 8b 91 c0 01 00 00 mov 0x1c0(%rcx),%rdx 19: 48 c1 e0 03 shl $0x3,%rax 1d: 48 01 c2 add %rax,%rdx 20: 66 83 7a 1a 00 cmpw $0x0,0x1a(%rdx) 25: 7e c0 jle 0xffffffffffffffe7 27: 48 8b 3a mov (%rdx),%rdi 2a:* 4c 8b 07 mov (%rdi),%r8 <-- trapping instruction 2d: 4c 89 02 mov %r8,(%rdx) 30: 49 89 50 08 mov %rdx,0x8(%r8) 34: 48 c7 47 08 00 00 00 movq $0x0,0x8(%rdi) 3b: 00 3c: 48 rex.W 3d: c7 .byte 0xc7 3e: 07 (bad) ... Code starting with the faulting instruction =========================================== 0: 4c 8b 07 mov (%rdi),%r8 3: 4c 89 02 mov %r8,(%rdx) 6: 49 89 50 08 mov %rdx,0x8(%r8) a: 48 c7 47 08 00 00 00 movq $0x0,0x8(%rdi) 11: 00 12: 48 rex.W 13: c7 .byte 0xc7 14: 07 (bad) ... [ 88.803721] RSP: 0018:ffff9a1f892b7d58 EFLAGS: 00000206 [ 88.804032] RAX: 0000000000000000 RBX: ffff9a1f8420c800 RCX: ffff9a1f8420c800 [ 88.804560] RDX: ffff9a1f81bc1440 RSI: 0000000000000000 RDI: 0000000000000000 [ 88.805056] RBP: ffffffffc04bb0e0 R08: 0000000000000001 R09: 00000000ff7f9a1f [ 88.805473] R10: 000000000001001b R11: 0000000000009a1f R12: 0000000000000140 [ 88.806194] R13: 0000000000000001 R14: ffff9a1f886df400 R15: ffff9a1f886df4ac [ 88.806734] FS: 00007f445601a740(0000) GS:ffff9a2e7fd80000(0000) knlGS:0000000000000000 [ 88.807225] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.807672] CR2: 0000000000000000 CR3: 000000050cc46000 CR4: 00000000000006f0 [ 88.808165] Call Trace: [ 88.808459] <TASK> [ 88.808710] ? __die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434) [ 88.809261] ? page_fault_oops (arch/x86/mm/fault.c:715) [ 88.809561] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:147 arch/x86/mm/fault.c:1489 arch/x86/mm/fault.c:1539) [ 88.809806] ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) [ 88.810074] ? sfq_dequeue (net/sched/sch_sfq.c:272 net/sched/sch_sfq.c:499) sch_sfq [ 88.810411] sfq_reset (net/sched/sch_sfq.c:525) sch_sfq [ 88.810671] qdisc_reset (./include/linux/skbuff.h:2135 ./include/linux/skbuff.h:2441 ./include/linux/skbuff.h:3304 ./include/linux/skbuff.h:3310 net/sched/sch_generic.c:1036) [ 88.810950] tbf_reset (./include/linux/timekeeping.h:169 net/sched/sch_tbf.c:334) sch_tbf [ 88.811208] qdisc_reset (./include/linux/skbuff.h:2135 ./include/linux/skbuff.h:2441 ./include/linux/skbuff.h:3304 ./include/linux/skbuff.h:3310 net/sched/sch_generic.c:1036) [ 88.811484] netif_set_real_num_tx_queues (./include/linux/spinlock.h:396 ./include/net/sch_generic.h:768 net/core/dev.c:2958) [ 88.811870] __tun_detach (drivers/net/tun.c:590 drivers/net/tun.c:673) [ 88.812271] tun_chr_close (drivers/net/tun.c:702 drivers/net/tun.c:3517) [ 88.812505] __fput (fs/file_table.c:432 (discriminator 1)) [ 88.812735] task_work_run (kernel/task_work.c:230) [ 88.813016] do_exit (kernel/exit.c:940) [ 88.813372] ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:58 (discriminator 4)) [ 88.813639] ? handle_mm_fault (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./arch/x86/include/asm/irqflags.h:155 ./include/linux/memcontrol.h:1022 ./include/linux/memcontrol.h:1045 ./include/linux/memcontrol.h:1052 mm/memory.c:5928 mm/memory.c:6088) [ 88.813867] do_group_exit (kernel/exit.c:1070) [ 88.814138] __x64_sys_exit_group (kernel/exit.c:1099) [ 88.814490] x64_sys_call (??:?) [ 88.814791] do_syscall_64 (arch/x86/entry/common.c:52 (discriminator 1) arch/x86/entry/common.c:83 (discriminator 1)) [ 88.815012] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 88.815495] RIP: 0033:0x7f44560f1975 Fixes: 175f9c1b ("net_sched: Add size table for qdiscs") Reported-by:
syzbot <syzkaller@googlegroups.com> Signed-off-by:
Eric Dumazet <edumazet@google.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Link: https://patch.msgid.link/20241007184130.3960565-1-edumazet@google.comSigned-off-by:
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Greg Thelen authored
Starting with 6.12 commit 85585b4b ("selftests: add ncdevmem, netcat for devmem TCP") kselftest-all creates additional outputs that kselftest-clean does not cleanup: $ make defconfig $ make kselftest-all $ make kselftest-clean $ git clean -ndxf | grep tools/net Would remove tools/net/ynl/lib/__pycache__/ Would remove tools/net/ynl/lib/ynl.a Would remove tools/net/ynl/lib/ynl.d Would remove tools/net/ynl/lib/ynl.o Make kselftest-clean remove the newly added net/ynl outputs. Fixes: 85585b4b ("selftests: add ncdevmem, netcat for devmem TCP") Signed-off-by:
Greg Thelen <gthelen@google.com> Reviewed-by:
Muhammad Usama Anjum <usama.anjum@collabora.com> Reviewed-by:
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Jakub Kicinski authored
Javier Carrasco says: ==================== selftests: net: add missing gitignore and EXTRA_CLEAN entries. This series is a cherry-pick on top of v6.12-rc1 from the one I sent for selftests with other patches that were not net-related: https://lore.kernel.org/all/20240925-selftests-gitignore-v3-0-9db896474170@gmail.com/ The patches have not been modified, and the Reviewed-by tags have been kept. v1: https://lore.kernel.org/20240930-net-selftests-gitignore-v1-0-65225a855946@gmail.com ==================== Link: https://patch.msgid.link/20241005-net-selftests-gitignore-v2-0-3a0b2876394a@gmail.comSigned-off-by:
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Javier Carrasco authored
The generated include.sh should be ignored by git. Create a new gitignore and add the file to the list. Reviewed-by:
Allison Henderson <allison.henderson@oracle.com> Signed-off-by:
Javier Carrasco <javier.carrasco.cruz@gmail.com> Link: https://patch.msgid.link/20241005-net-selftests-gitignore-v2-3-3a0b2876394a@gmail.comSigned-off-by:
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Javier Carrasco authored
The include.sh file is generated when building the net/rds selftests, but there is no rule to delete it with the clean target. Add the file to EXTRA_CLEAN in order to remove it when required. Reviewed-by:
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Javier Carrasco authored
This executable is missing from the corresponding gitignore file. Add msg_oob to the net gitignore list. Signed-off-by:
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Paolo Abeni authored
Jonas Gorski says: ==================== net: dsa: b53: assorted jumbo frame fixes While investigating the capabilities of BCM63XX's integrated switch and its DMA engine, I noticed a few issues in b53's jumbo frame code. Mostly a confusion of MTU vs frame length, but also a few missing cases for 100M switches. Tested on BCM63XX and BCM53115 with intel 1G and realtek 1G NICs, which support MTUs of 9000 or slightly above, but significantly less than the 9716/9720 supported by BCM53115, so I couldn't verify the actual maximum frame length. Signed-off-by:
Jonas Gorski <jonas.gorski@gmail.com> --- ==================== Link: https://patch.msgid.link/20241004-b53_jumbo_fixes-v1-0-ce1e54aa7b3c@gmail.comSigned-off-by:
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Jonas Gorski authored
All modern chips support and need the 10_100 bit set for supporting jumbo frames on 10/100 ports, so instead of enabling it only for 583XX enable it for everything except bcm63xx, where the bit is writeable, but does nothing. Tested on BCM53115, where jumbo frames were dropped at 10/100 speeds without the bit set. Fixes: 6ae5834b ("net: dsa: b53: add MTU configuration support") Signed-off-by:
Florian Fainelli <florian.fainelli@broadcom.com> Signed-off-by:
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Jonas Gorski authored
While BCM5325/5365 do not support jumbo frames, they do support slightly oversized frames, so do not error out if requesting a supported MTU for them. Fixes: 6ae5834b ("net: dsa: b53: add MTU configuration support") Signed-off-by:
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Jonas Gorski authored
BCM5325/BCM5365 do not support jumbo frames, so we should not report a jumbo frame mtu for them. But they do support so called "oversized" frames up to 1536 bytes long by default, so report an appropriate MTU. Fixes: 6ae5834b ("net: dsa: b53: add MTU configuration support") Signed-off-by:
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Jonas Gorski authored
JMS_MAX_SIZE is the ethernet frame length, not the MTU, which is payload without ethernet headers. According to the datasheets maximum supported frame length for most gigabyte swithes is 9720 bytes, so convert that to the expected MTU when using VLAN tagged frames. Fixes: 6ae5834b ("net: dsa: b53: add MTU configuration support") Signed-off-by:
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Jonas Gorski authored
JMS_MIN_SIZE is the full ethernet frame length, while mtu is just the data payload size. Comparing these two meant that mtus between 1500 and 1518 did not trigger enabling jumbo frames. So instead compare the set mtu ETH_DATA_LEN, which is equal to JMS_MIN_SIZE - ETH_HLEN - ETH_FCS_LEN; Also do a check that the requested mtu is actually greater than the minimum length, else we do not need to enable jumbo frames. In practice this only introduced a very small range of mtus that did not work properly. Newer chips allow 2000 byte large frames by default, and older chips allow 1536 bytes long, which is equivalent to an mtu of 1514. So effectivly only mtus of 1515~1517 were broken. Fixes: 6ae5834b ("net: dsa: b53: add MTU configuration support") Signed-off-by:
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Paolo Abeni authored
Nicolas Pitre says: ==================== fix ti-am65-cpsw-nuss module removal Fix issues preventing rmmod of ti-am65-cpsw-nuss from working properly. v3: - more patch submission minutiae v2: https://lore.kernel.org/netdev/20241003172105.2712027-2-nico@fluxnic.net/T/ - conform to netdev patch submission customs - address patch review trivias v1: https://lore.kernel.org/netdev/20240927025301.1312590-2-nico@fluxnic.net/T/ ==================== Link: https://patch.msgid.link/20241004041218.2809774-1-nico@fluxnic.netSigned-off-by:
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Nicolas Pitre authored
Usage of devm_alloc_etherdev_mqs() conflicts with am65_cpsw_nuss_cleanup_ndev() as the same struct net_device instances get unregistered twice. Switch to alloc_etherdev_mqs() and make sure am65_cpsw_nuss_cleanup_ndev() unregisters and frees those net_device instances properly. With this, it is finally possible to rmmod the driver without oopsing the kernel. Fixes: 93a76530 ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver") Signed-off-by:
Nicolas Pitre <npitre@baylibre.com> Reviewed-by:
Roger Quadros <roger@kernel.org> Signed-off-by:
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Nicolas Pitre authored
In am65_cpsw_nuss_remove(), move the call to am65_cpsw_unregister_devlink() after am65_cpsw_nuss_cleanup_ndev() to avoid triggering the WARN_ON(devlink_port->type != DEVLINK_PORT_TYPE_NOTSET) in devl_port_unregister(). Makes it coherent with usage in m65_cpsw_nuss_register_ndevs()'s cleanup path. Fixes: 58356eb3 ("net: ti: am65-cpsw-nuss: Add devlink support") Signed-off-by:
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Lorenzo Bianconi authored
Move the tx cpu dma ring index update out of transmit loop of airoha_dev_xmit routine in order to not start transmitting the packet before it is fully DMA mapped (e.g. fragmented skbs). Fixes: 23020f04 ("net: airoha: Introduce ethernet support for EN7581 SoC") Reported-by:
Felix Fietkau <nbd@nbd.name> Signed-off-by:
Lorenzo Bianconi <lorenzo@kernel.org> Reviewed-by:
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Christian Marangi authored
Commit c938ab4d ("net: phy: Manual remove LEDs to ensure correct ordering") correctly fixed a problem with using devm_ but missed removing the LED entry from the LEDs list. This cause kernel panic on specific scenario where the port for the PHY is torn down and up and the kmod for the PHY is removed. On setting the port down the first time, the assosiacted LEDs are correctly unregistered. The associated kmod for the PHY is now removed. The kmod is now added again and the port is now put up, the associated LED are registered again. On putting the port down again for the second time after these step, the LED list now have 4 elements. With the first 2 already unregistered previously and the 2 new one registered again. This cause a kernel panic as the first 2 element should have been removed. Fix this by correctly removing the element when LED is unregistered. Reported-by:
Daniel Golle <daniel@makrotopia.org> Tested-by:
Christian Marangi <ansuelsmth@gmail.com> Reviewed-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetoothJakub Kicinski authored
Luiz Augusto von Dentz says: ==================== bluetooth pull request for net: - RFCOMM: FIX possible deadlock in rfcomm_sk_state_change - hci_conn: Fix UAF in hci_enhanced_setup_sync - btusb: Don't fail external suspend requests * tag 'for-net-2024-10-04' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth: Bluetooth: btusb: Don't fail external suspend requests Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync Bluetooth: RFCOMM: FIX possible deadlock in rfcomm_sk_state_change ==================== Link: https://patch.msgid.link/20241004210124.4010321-1-luiz.dentz@gmail.comSigned-off-by:
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- 07 Oct, 2024 4 commits
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Christophe JAILLET authored
If 'frame_size' is too small or if 'round_len' is an error code, it is likely that an error code should be returned to the caller. Actually, 'ret' is likely to be 0, so if one of these sanity checks fails, 'success' is returned. Return -EINVAL instead. Fixes: bc93e19d ("net: ethernet: adi: Add ADIN1110 support") Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://patch.msgid.link/8ff73b40f50d8fa994a454911b66adebce8da266.1727981562.git.christophe.jaillet@wanadoo.frSigned-off-by:
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Jakub Kicinski authored
This reverts commit b514c47e. The commit describes that we don't have to sync the page when recycling, and it tries to optimize that case. But we do need to sync after allocation. Recycling side should be changed to pass the right sync size instead. Fixes: b514c47e ("net: stmmac: set PP_FLAG_DMA_SYNC_DEV only if XDP is enabled") Reported-by:
Jon Hunter <jonathanh@nvidia.com> Link: https://lore.kernel.org/20241004070846.2502e9ea@kernel.orgReviewed-by:
Jacob Keller <jacob.e.keller@intel.com> Reviewed-by:
Furong Xu <0x1207@gmail.com> Link: https://patch.msgid.link/20241004142115.910876-1-kuba@kernel.orgSigned-off-by:
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Anatolij Gustschin authored
Accessing device registers seems to be not reliable, the chip revision is sometimes detected wrongly (0 instead of expected 1). Ensure that the chip reset is performed via reset GPIO and then wait for 'Device Ready' status in HW_CFG register before doing any register initializations. Cc: stable@vger.kernel.org Fixes: a1292595 ("net: dsa: add new DSA switch driver for the SMSC-LAN9303") Signed-off-by:
Anatolij Gustschin <agust@denx.de> [alex: reworked using read_poll_timeout()] Signed-off-by:
Alexander Sverdlin <alexander.sverdlin@siemens.com> Reviewed-by:
Vladimir Oltean <olteanv@gmail.com> Link: https://patch.msgid.link/20241004113655.3436296-1-alexander.sverdlin@siemens.comSigned-off-by:
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Ignat Korchagin authored
We have recently noticed the exact same KASAN splat as in commit 6cd4a78d ("net: do not leave a dangling sk pointer, when socket creation fails"). The problem is that commit did not fully address the problem, as some pf->create implementations do not use sk_common_release in their error paths. For example, we can use the same reproducer as in the above commit, but changing ping to arping. arping uses AF_PACKET socket and if packet_create fails, it will just sk_free the allocated sk object. While we could chase all the pf->create implementations and make sure they NULL the freed sk object on error from the socket, we can't guarantee future protocols will not make the same mistake. So it is easier to just explicitly NULL the sk pointer upon return from pf->create in __sock_create. We do know that pf->create always releases the allocated sk object on error, so if the pointer is not NULL, it is definitely dangling. Fixes: 6cd4a78d ("net: do not leave a dangling sk pointer, when socket creation fails") Signed-off-by:
Ignat Korchagin <ignat@cloudflare.com> Cc: stable@vger.kernel.org Reviewed-by:
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- 04 Oct, 2024 2 commits
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Christophe JAILLET authored
If phy_read_mmd() fails, the error code stored in 'bmsr' should be returned instead of 'val' which is likely to be 0. Fixes: 75f4d8d1 ("net: phy: add Broadcom BCM84881 PHY driver") Signed-off-by:
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Anastasia Kovaleva authored
The kernel may crash when deleting a genetlink family if there are still listeners for that family: Oops: Kernel access of bad area, sig: 11 [#1] ... NIP [c000000000c080bc] netlink_update_socket_mc+0x3c/0xc0 LR [c000000000c0f764] __netlink_clear_multicast_users+0x74/0xc0 Call Trace: __netlink_clear_multicast_users+0x74/0xc0 genl_unregister_family+0xd4/0x2d0 Change the unsafe loop on the list to a safe one, because inside the loop there is an element removal from this list. Fixes: b8273570 ("genetlink: fix netns vs. netlink table locking (2)") Cc: stable@vger.kernel.org Signed-off-by:
Anastasia Kovaleva <a.kovaleva@yadro.com> Reviewed-by:
Dmitry Bogdanov <d.bogdanov@yadro.com> Reviewed-by:
Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20241003104431.12391-1-a.kovaleva@yadro.comSigned-off-by:
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