- 22 Feb, 2024 13 commits
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Paolo Abeni authored
Justin Iurman says: ==================== ioam6: fix write to cloned skb's Make sure the IOAM data insertion is not applied on cloned skb's. As a consequence, ioam selftests needed a refactoring. ==================== Link: https://lore.kernel.org/r/20240219135255.15429-1-justin.iurman@uliege.beSigned-off-by:
Paolo Abeni <pabeni@redhat.com>
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Justin Iurman authored
ioam6_parser uses a packet socket. After the fix to prevent writing to cloned skb's, the receiver does not see its IOAM data anymore, which makes input/forward ioam-selftests to fail. As a workaround, ioam6_parser now uses an IPv6 raw socket and leverages ancillary data to get hop-by-hop options. As a consequence, the hook is "after" the IOAM data insertion by the receiver and all tests are working again. Signed-off-by:
Justin Iurman <justin.iurman@uliege.be> Signed-off-by:
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Justin Iurman authored
ioam6_fill_trace_data() writes inside the skb payload without ensuring it's writeable (e.g., not cloned). This function is called both from the input and output path. The output path (ioam6_iptunnel) already does the check. This commit provides a fix for the input path, inside ipv6_hop_ioam(). It also updates ip6_parse_tlv() to refresh the network header pointer ("nh") when returning from ipv6_hop_ioam(). Fixes: 9ee11f0f ("ipv6: ioam: Data plane support for Pre-allocated Trace") Reported-by: -
Rémi Denis-Courmont authored
The receive queues are protected by their respective spin-lock, not the socket lock. This could lead to skb_peek() unexpectedly returning NULL or a pointer to an already dequeued socket buffer. Fixes: 9641458d ("Phonet: Pipe End Point for Phonet Pipes protocol") Signed-off-by:
Rémi Denis-Courmont <courmisch@gmail.com> Link: https://lore.kernel.org/r/20240218081214.4806-2-remi@remlab.netSigned-off-by:
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Rémi Denis-Courmont authored
The receive queue is protected by its embedded spin-lock, not the socket lock, so we need the former lock here (and only that one). Fixes: 107d0d9b ("Phonet: Phonet datagram transport protocol") Reported-by:
Luosili <rootlab@huawei.com> Signed-off-by:
Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/20240218081214.4806-1-remi@remlab.netSigned-off-by:
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Horatiu Vultur authored
Both registers used when doing manual injection or fdma injection are shared between all the net devices of the switch. It was noticed that when having two process which each of them trying to inject frames on different ethernet ports, that the HW started to behave strange, by sending out more frames then expected. When doing fdma injection it is required to set the frame in the DCB and then make sure that the next pointer of the last DCB is invalid. But because there is no locks for this, then easily this pointer between the DCB can be broken and then it would create a loop of DCBs. And that means that the HW will continuously transmit these frames in a loop. Until the SW will break this loop. Therefore to fix this issue, add a spin lock for when accessing the registers for manual or fdma injection. Signed-off-by:
Horatiu Vultur <horatiu.vultur@microchip.com> Reviewed-by:
Daniel Machon <daniel.machon@microchip.com> Fixes: f3cad261 ("net: sparx5: add hostmode with phylink support") Link: https://lore.kernel.org/r/20240219080043.1561014-1-horatiu.vultur@microchip.comSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
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Jianbo Liu authored
As IDR can't protect itself from the concurrent modification, place idr_remove() under the protection of tp->lock. Fixes: 08a0063d ("net/sched: flower: Move filter handle initialization earlier") Signed-off-by:
Jianbo Liu <jianbol@nvidia.com> Reviewed-by:
Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by:
Gal Pressman <gal@nvidia.com> Reviewed-by:
Jiri Pirko <jiri@nvidia.com> Acked-by:
Jamal Hadi Salim <jhs@mojatatu.com> Link: https://lore.kernel.org/r/20240220085928.9161-1-jianbol@nvidia.comSigned-off-by:
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Jiri Pirko authored
Unlike other commands, due to a c&p error, port dump fills-up cmd with wrong value, different from port-get request cmd, port-get doit reply and port notification. Fix it by filling cmd with value DEVLINK_CMD_PORT_NEW. Skimmed through devlink userspace implementations, none of them cares about this cmd value. Only ynl, for which, this is actually a fix, as it expects doit and dumpit ops rsp_value to be the same. Omit the fixes tag, even thought this is fix, better to target this for next release. Fixes: bfcd3a46 ("Introduce devlink infrastructure") Signed-off-by:
Simon Horman <horms@kernel.org> Reviewed-by:
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Kurt Kanzenbach authored
Fix EST offset for dwmac 5.10. Currently configuring Qbv doesn't work as expected. The schedule is configured, but never confirmed: |[ 128.250219] imx-dwmac 428a0000.ethernet eth1: configured EST The reason seems to be the refactoring of the EST code which set the wrong EST offset for the dwmac 5.10. After fixing this it works as before: |[ 106.359577] imx-dwmac 428a0000.ethernet eth1: configured EST |[ 128.430715] imx-dwmac 428a0000.ethernet eth1: EST: SWOL has been switched Tested on imx93. Fixes: c3f3b972 ("net: stmmac: Refactor EST implementation") Signed-off-by:
Kurt Kanzenbach <kurt@linutronix.de> Reviewed-by:
Serge Semin <fancer.lancer@gmail.com> Link: https://lore.kernel.org/r/20240220-stmmac_est-v1-1-c41f9ae2e7b7@linutronix.deSigned-off-by:
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Jakub Kicinski authored
Jakub Kicinski says: ==================== tools: ynl: fix impossible errors Fix bugs discovered while I was hacking in low level stuff in YNL and kept breaking the socket, exercising the "impossible" error paths. v1: https://lore.kernel.org/all/20240217001742.2466993-1-kuba@kernel.org/ ==================== Link: https://lore.kernel.org/r/20240220161112.2735195-1-kuba@kernel.orgSigned-off-by:
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Jakub Kicinski authored
Make sure to free the already-parsed mcast_groups if we don't get an ack from the kernel when reading family info. This is part of the ynl_sock_create() error path, so we won't get a call to ynl_sock_destroy() to free them later. Fixes: 86878f14 ("tools: ynl: user space helpers") Acked-by:
Nicolas Dichtel <nicolas.dichtel@6wind.com> Link: https://lore.kernel.org/r/20240220161112.2735195-3-kuba@kernel.orgSigned-off-by:
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Jakub Kicinski authored
There is one common error handler in ynl - ynl_cb_error(). It expects priv to be a pointer to struct ynl_parse_arg AKA yarg. To avoid potential crashes if we encounter a stray NLMSG_ERROR always pass yarg as priv (or a struct which has it as the first member). ynl_cb_null() has a similar problem directly - it expects yarg but priv passed by the caller is ys. Found by code inspection. Fixes: 86878f14 ("tools: ynl: user space helpers") Acked-by:
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Jeremy Kerr authored
We may hold an extra reference on a socket if a tag allocation fails: we optimistically allocate the sk_key, and take a ref there, but do not drop if we end up not using the allocated key. Ensure we're dropping the sock on this failure by doing a proper unref rather than directly kfree()ing. Fixes: de8a6b15 ("net: mctp: add an explicit reference from a mctp_sk_key to sock") Signed-off-by:
Jeremy Kerr <jk@codeconstruct.com.au> Reviewed-by:
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- 21 Feb, 2024 12 commits
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Jakub Kicinski authored
Sabrina Dubroca says: ==================== tls: fixes for record type handling with PEEK There are multiple bugs in tls_sw_recvmsg's handling of record types when MSG_PEEK flag is used, which can lead to incorrectly merging two records: - consecutive non-DATA records shouldn't be merged, even if they're the same type (partly handled by the test at the end of the main loop) - records of the same type (even DATA) shouldn't be merged if one record of a different type comes in between ==================== Link: https://lore.kernel.org/r/cover.1708007371.git.sd@queasysnail.netSigned-off-by:
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Sabrina Dubroca authored
If we queue 3 records: - record 1, type DATA - record 2, some other type - record 3, type DATA the current code can look past the 2nd record and merge the 2 data records. Signed-off-by:
Sabrina Dubroca <sd@queasysnail.net> Link: https://lore.kernel.org/r/4623550f8617c239581030c13402d3262f2bd14f.1708007371.git.sd@queasysnail.netSigned-off-by:
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Sabrina Dubroca authored
Two consecutive control messages of the same type should never be merged into one large received blob of data. Signed-off-by:
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Sabrina Dubroca authored
If we queue 3 records: - record 1, type DATA - record 2, some other type - record 3, type DATA and do a recv(PEEK), the rx_list will contain the first two records. The next large recv will walk through the rx_list and copy data from record 1, then stop because record 2 is a different type. Since we haven't filled up our buffer, we will process the next available record. It's also DATA, so we can merge it with the current read. We shouldn't do that, since there was a record in between that we ignored. Add a flag to let process_rx_list inform tls_sw_recvmsg that it had more data available. Fixes: 692d7b5d ("tls: Fix recvmsg() to be able to peek across multiple records") Signed-off-by:
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Sabrina Dubroca authored
If we have a non-DATA record on the rx_list and another record of the same type still on the queue, we will end up merging them: - process_rx_list copies the non-DATA record - we start the loop and process the first available record since it's of the same type - we break out of the loop since the record was not DATA Just check the record type and jump to the end in case process_rx_list did some work. Fixes: 692d7b5d ("tls: Fix recvmsg() to be able to peek across multiple records") Signed-off-by:
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Sabrina Dubroca authored
PEEK needs to leave decrypted records on the rx_list so that we can receive them later on, so it jumps back into the async code that queues the skb. Unfortunately that makes us skip the TLS_RECORD_TYPE_DATA check at the bottom of the main loop, so if two records of the same (non-DATA) type are queued, we end up merging them. Add the same record type check, and make it unlikely to not penalize the async fastpath. Async decrypt only applies to data record, so this check is only needed for PEEK. process_rx_list also has similar issues. Fixes: 692d7b5d ("tls: Fix recvmsg() to be able to peek across multiple records") Signed-off-by:
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Vasiliy Kovalev authored
The gtp_net_ops pernet operations structure for the subsystem must be registered before registering the generic netlink family. Syzkaller hit 'general protection fault in gtp_genl_dump_pdp' bug: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 1 PID: 5826 Comm: gtp Not tainted 6.8.0-rc3-std-def-alt1 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-alt1 04/01/2014 RIP: 0010:gtp_genl_dump_pdp+0x1be/0x800 [gtp] Code: c6 89 c6 e8 64 e9 86 df 58 45 85 f6 0f 85 4e 04 00 00 e8 c5 ee 86 df 48 8b 54 24 18 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 de 05 00 00 48 8b 44 24 18 4c 8b 30 4c 39 f0 74 RSP: 0018:ffff888014107220 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88800fcda588 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f1be4eb05c0(0000) GS:ffff88806ce80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1be4e766cf CR3: 000000000c33e000 CR4: 0000000000750ef0 PKRU: 55555554 Call Trace: <TASK> ? show_regs+0x90/0xa0 ? die_addr+0x50/0xd0 ? exc_general_protection+0x148/0x220 ? asm_exc_general_protection+0x22/0x30 ? gtp_genl_dump_pdp+0x1be/0x800 [gtp] ? __alloc_skb+0x1dd/0x350 ? __pfx___alloc_skb+0x10/0x10 genl_dumpit+0x11d/0x230 netlink_dump+0x5b9/0xce0 ? lockdep_hardirqs_on_prepare+0x253/0x430 ? __pfx_netlink_dump+0x10/0x10 ? kasan_save_track+0x10/0x40 ? __kasan_kmalloc+0x9b/0xa0 ? genl_start+0x675/0x970 __netlink_dump_start+0x6fc/0x9f0 genl_family_rcv_msg_dumpit+0x1bb/0x2d0 ? __pfx_genl_family_rcv_msg_dumpit+0x10/0x10 ? genl_op_from_small+0x2a/0x440 ? cap_capable+0x1d0/0x240 ? __pfx_genl_start+0x10/0x10 ? __pfx_genl_dumpit+0x10/0x10 ? __pfx_genl_done+0x10/0x10 ? security_capable+0x9d/0xe0 Cc: stable@vger.kernel.org Signed-off-by:Vasiliy Kovalev <kovalev@altlinux.org> Fixes: 459aa660 ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)") Link: https://lore.kernel.org/r/20240214162733.34214-1-kovalev@altlinux.orgSigned-off-by:
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Simon Horman authored
The cited commit [1] added framer support under drivers/net/wan, which is covered by NETWORKING [GENERAL]. And it is implied that framer-provider.h and framer.h, which were also added buy the same patch, are also maintained as part of NETWORKING [GENERAL]. Make this explicit by adding these files to the corresponding section in MAINTAINERS. [1] 82c944d0 ("net: wan: Add framer framework support") Signed-off-by:
Herve Codina <herve.codina@bootlin.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Kuniyuki Iwashima authored
syzbot reported another task hung in __unix_gc(). [0] The current while loop assumes that all of the left candidates have oob_skb and calling kfree_skb(oob_skb) releases the remaining candidates. However, I missed a case that oob_skb has self-referencing fd and another fd and the latter sk is placed before the former in the candidate list. Then, the while loop never proceeds, resulting the task hung. __unix_gc() has the same loop just before purging the collected skb, so we can call kfree_skb(oob_skb) there and let __skb_queue_purge() release all inflight sockets. [0]: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2784 Comm: kworker/u4:8 Not tainted 6.8.0-rc4-syzkaller-01028-g71b605d3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: events_unbound __unix_gc RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200 Code: 89 fb e8 23 00 00 00 48 8b 3d 84 f5 1a 0c 48 89 de 5b e9 43 26 57 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 04 24 65 48 8b 0d 90 52 70 7e 65 8b 15 91 52 70 RSP: 0018:ffffc9000a17fa78 EFLAGS: 00000287 RAX: ffffffff8a0a6108 RBX: ffff88802b6c2640 RCX: ffff88802c0b3b80 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc9000a17fbf0 R08: ffffffff89383f1d R09: 1ffff1100ee5ff84 R10: dffffc0000000000 R11: ffffed100ee5ff85 R12: 1ffff110056d84ee R13: ffffc9000a17fae0 R14: 0000000000000000 R15: ffffffff8f47b840 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffef5687ff8 CR3: 0000000029b34000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <NMI> </NMI> <TASK> __unix_gc+0xe69/0xf40 net/unix/garbage.c:343 process_one_work kernel/workqueue.c:2633 [inline] process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787 kthread+0x2ef/0x390 kernel/kthread.c:388 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242 </TASK> Reported-and-tested-by: syzbot+ecab4d36f920c3574bf9@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=ecab4d36f920c3574bf9 Fixes: 25236c91 ("af_unix: Fix task hung while purging oob_skb in GC.") Signed-off-by:
Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by:
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Alex Elder authored
In newer hardware, IPA supports more than 32 endpoints. Some registers--such as IPA interrupt registers--represent endpoints as bits in a 4-byte register, and such registers are repeated as needed to represent endpoints beyond the first 32. In ipa_interrupt_suspend_clear_all(), we clear all pending IPA suspend interrupts by reading all status register(s) and writing corresponding registers to clear interrupt conditions. Unfortunately the number of registers to read/write is calculated incorrectly, and as a result we access *many* more registers than intended. This bug occurs only when the IPA hardware signals a SUSPEND interrupt, which happens when a packet is received for an endpoint (or its underlying GSI channel) that is suspended. This situation is difficult to reproduce, but possible. Fix this by correctly computing the number of interrupt registers to read and write. This is the only place in the code where registers that map endpoints or channels this way perform this calculation. Fixes: f298ba78 ("net: ipa: add a parameter to suspend registers") Signed-off-by:
Alex Elder <elder@linaro.org> Signed-off-by:
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Eric Dumazet authored
syzbot reported a lockdep violation [1] involving af_unix support of SO_PEEK_OFF. Since SO_PEEK_OFF is inherently not thread safe (it uses a per-socket sk_peek_off field), there is really no point to enforce a pointless thread safety in the kernel. After this patch : - setsockopt(SO_PEEK_OFF) no longer acquires the socket lock. - skb_consume_udp() no longer has to acquire the socket lock. - af_unix no longer needs a special version of sk_set_peek_off(), because it does not lock u->iolock anymore. As a followup, we could replace prot->set_peek_off to be a boolean and avoid an indirect call, since we always use sk_set_peek_off(). [1] WARNING: possible circular locking dependency detected 6.8.0-rc4-syzkaller-00267-g0f1dd5e9 #0 Not tainted syz-executor.2/30025 is trying to acquire lock: ffff8880765e7d80 (&u->iolock){+.+.}-{3:3}, at: unix_set_peek_off+0x26/0xa0 net/unix/af_unix.c:789 but task is already holding lock: ffff8880765e7930 (sk_lock-AF_UNIX){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1691 [inline] ffff8880765e7930 (sk_lock-AF_UNIX){+.+.}-{0:0}, at: sockopt_lock_sock net/core/sock.c:1060 [inline] ffff8880765e7930 (sk_lock-AF_UNIX){+.+.}-{0:0}, at: sk_setsockopt+0xe52/0x3360 net/core/sock.c:1193 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (sk_lock-AF_UNIX){+.+.}-{0:0}: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 lock_sock_nested+0x48/0x100 net/core/sock.c:3524 lock_sock include/net/sock.h:1691 [inline] __unix_dgram_recvmsg+0x1275/0x12c0 net/unix/af_unix.c:2415 sock_recvmsg_nosec+0x18e/0x1d0 net/socket.c:1046 ____sys_recvmsg+0x3c0/0x470 net/socket.c:2801 ___sys_recvmsg net/socket.c:2845 [inline] do_recvmmsg+0x474/0xae0 net/socket.c:2939 __sys_recvmmsg net/socket.c:3018 [inline] __do_sys_recvmmsg net/socket.c:3041 [inline] __se_sys_recvmmsg net/socket.c:3034 [inline] __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3034 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 -> #0 (&u->iolock){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x18ca/0x58e0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752 unix_set_peek_off+0x26/0xa0 net/unix/af_unix.c:789 sk_setsockopt+0x207e/0x3360 do_sock_setsockopt+0x2fb/0x720 net/socket.c:2307 __sys_setsockopt+0x1ad/0x250 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2340 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sk_lock-AF_UNIX); lock(&u->iolock); lock(sk_lock-AF_UNIX); lock(&u->iolock); *** DEADLOCK *** 1 lock held by syz-executor.2/30025: #0: ffff8880765e7930 (sk_lock-AF_UNIX){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1691 [inline] #0: ffff8880765e7930 (sk_lock-AF_UNIX){+.+.}-{0:0}, at: sockopt_lock_sock net/core/sock.c:1060 [inline] #0: ffff8880765e7930 (sk_lock-AF_UNIX){+.+.}-{0:0}, at: sk_setsockopt+0xe52/0x3360 net/core/sock.c:1193 stack backtrace: CPU: 0 PID: 30025 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-00267-g0f1dd5e9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x18ca/0x58e0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752 unix_set_peek_off+0x26/0xa0 net/unix/af_unix.c:789 sk_setsockopt+0x207e/0x3360 do_sock_setsockopt+0x2fb/0x720 net/socket.c:2307 __sys_setsockopt+0x1ad/0x250 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2340 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f78a1c7dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f78a0fde0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f78a1dac050 RCX: 00007f78a1c7dda9 RDX: 000000000000002a RSI: 0000000000000001 RDI: 0000000000000006 RBP: 00007f78a1cca47a R08: 0000000000000004 R09: 0000000000000000 R10: 0000000020000180 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f78a1dac050 R15: 00007ffe5cd81ae8 Fixes: 859051dd ("bpf: Implement cgroup sockaddr hooks for unix sockets") Signed-off-by:
Willem de Bruijn <willemb@google.com> Reviewed-by:
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Subbaraya Sundeep authored
AF reserves MCAM entries for each PF, VF present in the system and populates the entry with DMAC and action with default RSS so that basic packet I/O works. Since PF/VF is not aware of the RSS action installed by AF, AF only fixup the actions of the rules installed by PF/VF with corresponding default RSS action. This worked well for rules installed by PF/VF for features like RX VLAN offload and DMAC filters but rules involving action like drop/forward to queue are also getting modified by AF. Hence fix it by setting the default RSS action only if requested by PF/VF. Fixes: 967db352 ("octeontx2-af: add support for multicast/promisc packet replication feature") Signed-off-by:
Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by:
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- 20 Feb, 2024 4 commits
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Jakub Kicinski authored
Netronome graciously transferred the original NIPA repo to our new netdev umbrella org. Link to that instead of my private fork. Signed-off-by:
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Kuniyuki Iwashima authored
syzkaller reported an overflown write in arp_req_get(). [0] When ioctl(SIOCGARP) is issued, arp_req_get() looks up an neighbour entry and copies neigh->ha to struct arpreq.arp_ha.sa_data. The arp_ha here is struct sockaddr, not struct sockaddr_storage, so the sa_data buffer is just 14 bytes. In the splat below, 2 bytes are overflown to the next int field, arp_flags. We initialise the field just after the memcpy(), so it's not a problem. However, when dev->addr_len is greater than 22 (e.g. MAX_ADDR_LEN), arp_netmask is overwritten, which could be set as htonl(0xFFFFFFFFUL) in arp_ioctl() before calling arp_req_get(). To avoid the overflow, let's limit the max length of memcpy(). Note that commit b5f0de6d ("net: dev: Convert sa_data to flexible array in struct sockaddr") just silenced syzkaller. [0]: memcpy: detected field-spanning write (size 16) of single field "r->arp_ha.sa_data" at net/ipv4/arp.c:1128 (size 14) WARNING: CPU: 0 PID: 144638 at net/ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128 Modules linked in: CPU: 0 PID: 144638 Comm: syz-executor.4 Not tainted 6.1.74 #31 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014 RIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128 Code: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb <0f> 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6 RSP: 0018:ffffc900050b7998 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88803a815000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001 RBP: ffffc900050b7a98 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000 R13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010 FS: 00007f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4: 0000000000770ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <TASK> arp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261 inet_ioctl+0x314/0x3a0 net/ipv4/af_inet.c:981 sock_do_ioctl+0xdf/0x260 net/socket.c:1204 sock_ioctl+0x3ef/0x650 net/socket.c:1321 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x37/0x90 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x64/0xce RIP: 0033:0x7f172b262b8d Code: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 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:00007f172bf300b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f172b3abf80 RCX: 00007f172b262b8d RDX: 0000000020000000 RSI: 0000000000008954 RDI: 0000000000000003 RBP: 00007f172b2d3493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000 </TASK> Reported-by:
syzkaller <syzkaller@googlegroups.com> Reported-by:
Bjoern Doebel <doebel@amazon.de> Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Vasiliy Kovalev authored
The pernet operations structure for the subsystem must be registered before registering the generic netlink family. Make an unregister in case of unsuccessful registration. Fixes: 687125b5 ("devlink: split out core code") Signed-off-by:
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Vasiliy Kovalev authored
The pernet operations structure for the subsystem must be registered before registering the generic netlink family. Fixes: 915d7e5e ("ipv6: sr: add code base for control plane support of SR-IPv6") Signed-off-by:
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- 19 Feb, 2024 3 commits
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Kees Cook authored
FORTIFY_SOURCE has been ignoring 0-sized destinations while the kernel code base has been converted to flexible arrays. In order to enforce the 0-sized destinations (e.g. with __counted_by), the remaining 0-sized destinations need to be handled. Unfortunately, struct vic_provinfo resists full conversion, as it contains a flexible array of flexible arrays, which is only possible with the 0-sized fake flexible array. Use unsafe_memcpy() to avoid future false positives under CONFIG_FORTIFY_SOURCE. Signed-off-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
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Shannon Nelson authored
Since there is a utility available for this, use the API rather than open code. Fixes: 13943d6c ("ionic: prevent pci disable of already disabled device") Reviewed-by:
Brett Creeley <brett.creeley@amd.com> Signed-off-by:
Shannon Nelson <shannon.nelson@amd.com> Signed-off-by:
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Hangbin Liu authored
In bond priority testing, we set the primary interface to eth1 and add eth0,1,2 to bond in serial. This is OK in normal times. But when in debug kernel, the bridge port that eth0,1,2 connected would start slowly (enter blocking, forwarding state), which caused the primary interface down for a while after enslaving and active slave changed. Here is a test log from Jakub's debug test[1]. [ 400.399070][ T50] br0: port 1(s0) entered disabled state [ 400.400168][ T50] br0: port 4(s2) entered disabled state [ 400.941504][ T2791] bond0: (slave eth0): making interface the new active one [ 400.942603][ T2791] bond0: (slave eth0): Enslaving as an active interface with an up link [ 400.943633][ T2766] br0: port 1(s0) entered blocking state [ 400.944119][ T2766] br0: port 1(s0) entered forwarding state [ 401.128792][ T2792] bond0: (slave eth1): making interface the new active one [ 401.130771][ T2792] bond0: (slave eth1): Enslaving as an active interface with an up link [ 401.131643][ T69] br0: port 2(s1) entered blocking state [ 401.132067][ T69] br0: port 2(s1) entered forwarding state [ 401.346201][ T2793] bond0: (slave eth2): Enslaving as a backup interface with an up link [ 401.348414][ T50] br0: port 4(s2) entered blocking state [ 401.348857][ T50] br0: port 4(s2) entered forwarding state [ 401.519669][ T250] bond0: (slave eth0): link status definitely down, disabling slave [ 401.526522][ T250] bond0: (slave eth1): link status definitely down, disabling slave [ 401.526986][ T250] bond0: (slave eth2): making interface the new active one [ 401.629470][ T250] bond0: (slave eth0): link status definitely up [ 401.630089][ T250] bond0: (slave eth1): link status definitely up [...] # TEST: prio (active-backup ns_ip6_target primary_reselect 1) [FAIL] # Current active slave is eth2 but not eth1 Fix it by setting active slave to primary slave specifically before testing. [1] https://netdev-3.bots.linux.dev/vmksft-bonding-dbg/results/464301/1-bond-options-sh/stdout Fixes: 481b56e0 ("selftests: bonding: re-format bond option tests") Signed-off-by:
Hangbin Liu <liuhangbin@gmail.com> Signed-off-by:
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- 18 Feb, 2024 8 commits
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David S. Miller authored
Justin Chen says: ==================== net: bcmasp: bug fixes for bcmasp Fix two bugs. - Indicate that PM is managed by mac to prevent double pm calls. This doesn't lead to a crash, but waste a noticable amount of time suspending/resuming. - Sanity check for OOB write was off by one. Leading to a false error when using the full array. ==================== Signed-off-by: -
Justin Chen authored
A sanity check for OOB write is off by one leading to a false positive when the array is full. Fixes: 9b90aca9 ("net: ethernet: bcmasp: fix possible OOB write in bcmasp_netfilt_get_all_active()") Signed-off-by:
Justin Chen <justin.chen@broadcom.com> Reviewed-by:
Florian Fainelli <florian.fainelli@broadcom.com> Signed-off-by:
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Florian Fainelli authored
Avoid the PHY library call unnecessarily into the suspend/resume functions by setting phydev->mac_managed_pm to true. The ASP driver essentially does exactly what mdio_bus_phy_resume() does. Fixes: 490cb412 ("net: bcmasp: Add support for ASP2.0 Ethernet controller") Signed-off-by:
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David S. Miller authored
Matthieu Baerts says: ==================== mptcp: misc. fixes for v6.8 This series includes 4 types of fixes: Patches 1 and 2 force the path-managers not to allocate a new address entry when dealing with the "special" ID 0, reserved to the address of the initial subflow. These patches can be backported up to v5.19 and v5.12 respectively. Patch 3 to 6 fix the in-kernel path-manager not to create duplicated subflows. Patch 6 is the main fix, but patches 3 to 5 are some kind of pre-requisities: they fix some data races that could also lead to the creation of unexpected subflows. These patches can be backported up to v5.7, v5.10, v6.0, and v5.15 respectively. Note that patch 3 modifies the existing ULP API. No better solutions have been found for -net, and there is some similar prior art, see commit 0df48c26 ("tcp: add tcpi_bytes_acked to tcp_info"). Please also note that TLS ULP Diag has likely the same issue. Patches 7 to 9 fix issues in the selftests, when executing them on older kernels, e.g. when testing the last version of these kselftests on the v5.15.148 kernel as it is done by LKFT when validating stable kernels. These patches only avoid printing expected errors the console and marking some tests as "OK" while they have been skipped. Patches 7 and 8 can be backported up to v6.6. Patches 10 to 13 make sure all MPTCP selftests subtests have a unique name. It is important to have a unique (sub)test name in TAP, because that's the test identifier. Some CI environments might drop tests with duplicated names. Patches 10 to 12 can be backported up to v6.6. ==================== Signed-off-by:
Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by:
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Matthieu Baerts (NGI0) authored
It is important to have a unique (sub)test name in TAP, because some CI environments drop tests with duplicated name. Some 'cestab' subtests from the diag selftest had the same names, e.g.: ....chk 0 cestab Now the previous value is taken, to have different names, e.g.: ....chk 2->0 cestab after flush While at it, the 'after flush' info is added, similar to what is done with the 'in use' subtests. Also inspired by these 'in use' subtests, 'many' is displayed instead of a large number: many msk socket present [ ok ] ....chk many msk in use [ ok ] ....chk many cestab [ ok ] ....chk many->0 msk in use after flush [ ok ] ....chk many->0 cestab after flush [ ok ] Fixes: 81ab7728 ("selftests: mptcp: diag: check CURRESTAB counters") Cc: stable@vger.kernel.org Reviewed-by:Geliang Tang <geliang@kernel.org> Signed-off-by:
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Matthieu Baerts (NGI0) authored
It is important to have a unique (sub)test name in TAP, because some CI environments drop tests with duplicated name. Some 'in use' subtests from the diag selftest had the same names, e.g.: chk 0 msk in use after flush Now the previous value is taken, to have different names, e.g.: chk 2->0 msk in use after flush While at it, avoid repeating the full message, declare it once in the helper. Fixes: ce990257 ("selftests: mptcp: diag: format subtests results in TAP") Cc: stable@vger.kernel.org Reviewed-by: -
Matthieu Baerts (NGI0) authored
It is important to have a unique (sub)test name in TAP, because some CI environments drop tests with duplicated names. Some subtests from the userspace_pm selftest had the same names. That's because different subflows are created (and deleted) between the same pair of IP addresses. Simply adding the destination port in the name is then enough to have different names, because the destination port is always different. Note that adding such info takes a bit more space, so we need to increase a bit the width to print the name, simply to keep all the '[ OK ]' aligned as before. Fixes: f589234e ("selftests: mptcp: userspace_pm: format subtests results in TAP") Cc: stable@vger.kernel.org Reviewed-by:
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Matthieu Baerts (NGI0) authored
The selftest was correctly recording all the results, but the 'reverse direction' part was missing in the name when needed. It is important to have a unique (sub)test name in TAP, because some CI environments drop tests with duplicated name. Fixes: 675d9933 ("selftests: mptcp: simult flows: format subtests results in TAP") Cc: stable@vger.kernel.org Reviewed-by:
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