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2022-11-24net/mlx5e: MACsec, fix mlx5e_macsec_update_rxsa bail condition and functionalityRaed Salem
Fix update Rx SA wrong bail condition, naturally update functionality needs to check that something changed otherwise bailout currently the active state check does just the opposite, furthermore unlike deactivate path which remove the macsec rules to deactivate the offload, the activation path does not include the counter part installation of the macsec rules. Fix by using correct bailout condition and when Rx SA changes state to active then add the relevant macsec rules. While at it, refine function name to reflect more precisely its role. Fixes: aae3454e4d4c ("net/mlx5e: Add MACsec offload Rx command support") Signed-off-by: Raed Salem <raeds@nvidia.com> Reviewed-by: Emeel Hakim <ehakim@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-11-24net/mlx5e: MACsec, fix update Rx secure channel active fieldRaed Salem
The main functionality for this operation is to update the active state of the Rx security channel (SC) if the new active setting is different from the current active state of this Rx SC, however the relevant active state check is done post updating the current active state to match the new active state, effectively blocks any offload state update for the Rx SC in question. Fix by delay the assignment to be post the relevant check. Fixes: aae3454e4d4c ("net/mlx5e: Add MACsec offload Rx command support") Signed-off-by: Raed Salem <raeds@nvidia.com> Reviewed-by: Emeel Hakim <ehakim@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-11-24net/mlx5e: MACsec, fix memory leak when MACsec device is deletedRaed Salem
When the MACsec netdevice is deleted, all related Rx/Tx HW/SW states should be released/deallocated, however currently part of the Rx security channel association data is not cleaned properly, hence the memory leaks. Fix by make sure all related Rx Sc resources are cleaned/freed, while at it improve code by grouping release SC context in a function so it can be used in both delete MACsec device and delete Rx SC operations. Fixes: 5a39816a75e5 ("net/mlx5e: Add MACsec offload SecY support") Signed-off-by: Raed Salem <raeds@nvidia.com> Reviewed-by: Emeel Hakim <ehakim@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-11-24net/mlx5e: MACsec, fix RX data path 16 RX security channel limitRaed Salem
Currently the data path metadata flow id mask wrongly limits the number of different RX security channels (SC) to 16, whereas in adding RX SC the limit is "2^16 - 1" this cause an overlap in metadata flow id once more than 16 RX SCs is added, this corrupts MACsec RX offloaded flow handling. Fix by using the correct mask, while at it improve code to use this mask when adding the Rx rule and improve visibility of such errors by adding debug massage. Fixes: b7c9400cbc48 ("net/mlx5e: Implement MACsec Rx data path using MACsec skb_metadata_dst") Signed-off-by: Raed Salem <raeds@nvidia.com> Reviewed-by: Emeel Hakim <ehakim@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-11-24net/mlx5e: Use kvfree() in mlx5e_accel_fs_tcp_create()YueHaibing
'accel_tcp' is allocated by kvzalloc(), which should freed by kvfree(). Fixes: f52f2faee581 ("net/mlx5e: Introduce flow steering API") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-11-24net/mlx5e: Fix a couple error codesDan Carpenter
If kvzalloc() fails then return -ENOMEM. Don't return success. Fixes: 3b20949cb21b ("net/mlx5e: Add MACsec RX steering rules") Fixes: e467b283ffd5 ("net/mlx5e: Add MACsec TX steering rules") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-11-24net/mlx5e: Fix use-after-free when reverting termination tableRoi Dayan
When having multiple dests with termination tables and second one or afterwards fails the driver reverts usage of term tables but doesn't reset the assignment in attr->dests[num_vport_dests].termtbl which case a use-after-free when releasing the rule. Fix by resetting the assignment of termtbl to null. Fixes: 10caabdaad5a ("net/mlx5e: Use termination table for VLAN push actions") Signed-off-by: Roi Dayan <roid@nvidia.com> Reviewed-by: Maor Dickman <maord@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-11-24net/mlx5: Fix uninitialized variable bug in outlen_write()YueHaibing
If sscanf() return 0, outlen is uninitialized and used in kzalloc(), this is unexpected. We should return -EINVAL if the string is invalid. Fixes: e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-11-24net/mlx5: E-switch, Fix duplicate lag creationChris Mi
If creating bond first and then enabling sriov in switchdev mode, will hit the following syndrome: mlx5_core 0000:08:00.0: mlx5_cmd_out_err:778:(pid 25543): CREATE_LAG(0x840) op_mod(0x0) failed, status bad parameter(0x3), syndrome (0x7d49cb), err(-22) The reason is because the offending patch removes eswitch mode none. In vf lag, the checking of eswitch mode none is replaced by checking if sriov is enabled. But when driver enables sriov, it triggers the bond workqueue task first and then setting sriov number in pci_enable_sriov(). So the check fails. Fix it by checking if sriov is enabled using eswitch internal counter that is set before triggering the bond workqueue task. Fixes: f019679ea5f2 ("net/mlx5: E-switch, Remove dependency between sriov and eswitch mode") Signed-off-by: Chris Mi <cmi@nvidia.com> Reviewed-by: Roi Dayan <roid@nvidia.com> Reviewed-by: Mark Bloch <mbloch@nvidia.com> Reviewed-by: Vlad Buslov <vladbu@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-11-24net/mlx5: E-switch, Destroy legacy fdb table when neededChris Mi
The cited commit removes eswitch mode none. But when disabling sriov in legacy mode or changing from switchdev to legacy mode without sriov enabled, the legacy fdb table is not destroyed. It is not the right behavior. Destroy legacy fdb table in above two caes. Fixes: f019679ea5f2 ("net/mlx5: E-switch, Remove dependency between sriov and eswitch mode") Signed-off-by: Chris Mi <cmi@nvidia.com> Reviewed-by: Roi Dayan <roid@nvidia.com> Reviewed-by: Eli Cohen <elic@nvidia.com> Reviewed-by: Mark Bloch <mbloch@nvidia.com> Reviewed-by: Vlad Buslov <vladbu@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-11-24net/mlx5: DR, Fix uninitialized var warningYueHaibing
Smatch warns this: drivers/net/ethernet/mellanox/mlx5/core/steering/dr_table.c:81 mlx5dr_table_set_miss_action() error: uninitialized symbol 'ret'. Initializing ret with -EOPNOTSUPP and fix missing action case. Fixes: 7838e1725394 ("net/mlx5: DR, Expose steering table functionality") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Roi Dayan <roid@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-11-24octeontx2-pf: Add check for devm_kcallocJiasheng Jiang
As the devm_kcalloc may return NULL pointer, it should be better to add check for the return value, as same as the others. Fixes: e8e095b3b370 ("octeontx2-af: cn10k: Bandwidth profiles config support") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Link: https://lore.kernel.org/r/20221122055449.31247-1-jiasheng@iscas.ac.cn Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-11-23net: enetc: preserve TX ring priority across reconfigurationVladimir Oltean
In the blamed commit, a rudimentary reallocation procedure for RX buffer descriptors was implemented, for the situation when their format changes between normal (no PTP) and extended (PTP). enetc_hwtstamp_set() calls enetc_close() and enetc_open() in a sequence, and this sequence loses information which was previously configured in the TX BDR Mode Register, specifically via the enetc_set_bdr_prio() call. The TX ring priority is configured by tc-mqprio and tc-taprio, and affects important things for TSN such as the TX time of packets. The issue manifests itself most visibly by the fact that isochron --txtime reports premature packet transmissions when PTP is first enabled on an enetc interface. Save the TX ring priority in a new field in struct enetc_bdr (occupies a 2 byte hole on arm64) in order to make this survive a ring reconfiguration. Fixes: 434cebabd3a2 ("enetc: Add dynamic allocation of extended Rx BD rings") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Alexander Lobakin <alexandr.lobakin@intel.com> Link: https://lore.kernel.org/r/20221122130936.1704151-1-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-23net: marvell: prestera: add missing unregister_netdev() in ↵Zhang Changzhong
prestera_port_create() If prestera_port_sfp_bind() fails, unregister_netdev() should be called in error handling path. Compile tested only. Fixes: 52323ef75414 ("net: marvell: prestera: add phylink support") Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Link: https://lore.kernel.org/r/1669115432-36841-1-git-send-email-zhangchangzhong@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-23Merge branch 'nfc-st-nci-restructure-validating-logic-in-evt_transaction'Jakub Kicinski
Martin Faltesek says: ==================== nfc: st-nci: Restructure validating logic in EVT_TRANSACTION These are the same 3 patches that were applied in st21nfca here: https://lore.kernel.org/netdev/20220607025729.1673212-1-mfaltesek@google.com with a couple minor differences. st-nci has nearly identical code to that of st21nfca for EVT_TRANSACTION, except that there are two extra validation checks that are not present in the st-nci code. The 3/3 patch as coded for st21nfca pulls those checks in, bringing both drivers into parity. ==================== Link: https://lore.kernel.org/r/20221122004246.4186422-1-mfaltesek@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-23nfc: st-nci: fix incorrect sizing calculations in EVT_TRANSACTIONMartin Faltesek
The transaction buffer is allocated by using the size of the packet buf, and subtracting two which seems intended to remove the two tags which are not present in the target structure. This calculation leads to under counting memory because of differences between the packet contents and the target structure. The aid_len field is a u8 in the packet, but a u32 in the structure, resulting in at least 3 bytes always being under counted. Further, the aid data is a variable length field in the packet, but fixed in the structure, so if this field is less than the max, the difference is added to the under counting. To fix, perform validation checks progressively to safely reach the next field, to determine the size of both buffers and verify both tags. Once all validation checks pass, allocate the buffer and copy the data. This eliminates freeing memory on the error path, as validation checks are moved ahead of memory allocation. Reported-by: Denis Efremov <denis.e.efremov@oracle.com> Reviewed-by: Guenter Roeck <groeck@google.com> Fixes: 5d1ceb7f5e56 ("NFC: st21nfcb: Add HCI transaction event support") Signed-off-by: Martin Faltesek <mfaltesek@google.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-23nfc: st-nci: fix memory leaks in EVT_TRANSACTIONMartin Faltesek
Error path does not free previously allocated memory. Add devm_kfree() to the failure path. Reported-by: Denis Efremov <denis.e.efremov@oracle.com> Reviewed-by: Guenter Roeck <groeck@google.com> Fixes: 5d1ceb7f5e56 ("NFC: st21nfcb: Add HCI transaction event support") Signed-off-by: Martin Faltesek <mfaltesek@google.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-23nfc: st-nci: fix incorrect validating logic in EVT_TRANSACTIONMartin Faltesek
The first validation check for EVT_TRANSACTION has two different checks tied together with logical AND. One is a check for minimum packet length, and the other is for a valid aid_tag. If either condition is true (fails), then an error should be triggered. The fix is to change && to ||. Reported-by: Denis Efremov <denis.e.efremov@oracle.com> Reviewed-by: Guenter Roeck <groeck@google.com> Fixes: 5d1ceb7f5e56 ("NFC: st21nfcb: Add HCI transaction event support") Signed-off-by: Martin Faltesek <mfaltesek@google.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-23Merge branch 'master' of ↵Jakub Kicinski
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec Steffen Klassert says: ==================== ipsec 2022-11-23 1) Fix "disable_policy" on ipv4 early demuxP Packets after the initial packet in a flow might be incorectly dropped on early demux if there are no matching policies. From Eyal Birger. 2) Fix a kernel warning in case XFRM encap type is not available. From Eyal Birger. 3) Fix ESN wrap around for GSO to avoid a double usage of a sequence number. From Christian Langrock. 4) Fix a send_acquire race with pfkey_register. From Herbert Xu. 5) Fix a list corruption panic in __xfrm_state_delete(). Thomas Jarosch. 6) Fix an unchecked return value in xfrm6_init(). Chen Zhongjin. * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec: xfrm: Fix ignored return value in xfrm6_init() xfrm: Fix oops in __xfrm_state_delete() af_key: Fix send_acquire race with pfkey_register xfrm: replay: Fix ESN wrap around for GSO xfrm: lwtunnel: squelch kernel warning in case XFRM encap type is not available xfrm: fix "disable_policy" on ipv4 early demux ==================== Link: https://lore.kernel.org/r/20221123093117.434274-1-steffen.klassert@secunet.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nfJakub Kicinski
Pablo Neira Ayuso says: ==================== Netfilter fixes for net 1) Fix regression in ipset hash:ip with IPv4 range, from Vishwanath Pai. This is fixing up a bug introduced in the 6.0 release. 2) The "netfilter: ipset: enforce documented limit to prevent allocating huge memory" patch contained a wrong condition which makes impossible to add up to 64 clashing elements to a hash:net,iface type of set while it is the documented feature of the set type. The patch fixes the condition and thus makes possible to add the elements while keeps preventing allocating huge memory, from Jozsef Kadlecsik. This has been broken for several releases. 3) Missing locking when updating the flow block list which might lead a reader to crash. This has been broken since the introduction of the flowtable hardware offload support. * git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf: netfilter: flowtable_offload: add missing locking netfilter: ipset: restore allowing 64 clashing elements in hash:net,iface netfilter: ipset: regression in ip_set_hash_ip.c ==================== Link: https://lore.kernel.org/r/20221122212814.63177-1-pablo@netfilter.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-23Documentation: networking: Update generic_netlink_howto URLNir Levy
The documentation refers to invalid web page under www.linuxfoundation.org The patch refers to a working URL under wiki.linuxfoundation.org Signed-off-by: Nir Levy <bhr166@gmail.com> Link: https://lore.kernel.org/all/20221120220630.7443-1-bhr166@gmail.com/ Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-23net/cdc_ncm: Fix multicast RX support for CDC NCM devices with ZLPSantiago Ruano Rincón
ZLP for DisplayLink ethernet devices was enabled in 6.0: 266c0190aee3 ("net/cdc_ncm: Enable ZLP for DisplayLink ethernet devices"). The related driver_info should be the "same as cdc_ncm_info, but with FLAG_SEND_ZLP". However, set_rx_mode that enables handling multicast traffic was missing in the new cdc_ncm_zlp_info. usbnet_cdc_update_filter rx mode was introduced in linux 5.9 with: e10dcb1b6ba7 ("net: cdc_ncm: hook into set_rx_mode to admit multicast traffic") Without this hook, multicast, and then IPv6 SLAAC, is broken. Fixes: 266c0190aee3 ("net/cdc_ncm: Enable ZLP for DisplayLink ethernet devices") Signed-off-by: Santiago Ruano Rincón <santiago.ruano-rincon@imt-atlantique.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-11-23net: usb: qmi_wwan: add u-blox 0x1342 compositionDavide Tronchin
Add RmNet support for LARA-L6. LARA-L6 module can be configured (by AT interface) in three different USB modes: * Default mode (Vendor ID: 0x1546 Product ID: 0x1341) with 4 serial interfaces * RmNet mode (Vendor ID: 0x1546 Product ID: 0x1342) with 4 serial interfaces and 1 RmNet virtual network interface * CDC-ECM mode (Vendor ID: 0x1546 Product ID: 0x1343) with 4 serial interface and 1 CDC-ECM virtual network interface In RmNet mode LARA-L6 exposes the following interfaces: If 0: Diagnostic If 1: AT parser If 2: AT parser If 3: AT parset/alternative functions If 4: RMNET interface Signed-off-by: Davide Tronchin <davide.tronchin.94@gmail.com> Acked-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-11-23l2tp: Don't sleep and disable BH under writer-side sk_callback_lockJakub Sitnicki
When holding a reader-writer spin lock we cannot sleep. Calling setup_udp_tunnel_sock() with write lock held violates this rule, because we end up calling percpu_down_read(), which might sleep, as syzbot reports [1]: __might_resched.cold+0x222/0x26b kernel/sched/core.c:9890 percpu_down_read include/linux/percpu-rwsem.h:49 [inline] cpus_read_lock+0x1b/0x140 kernel/cpu.c:310 static_key_slow_inc+0x12/0x20 kernel/jump_label.c:158 udp_tunnel_encap_enable include/net/udp_tunnel.h:187 [inline] setup_udp_tunnel_sock+0x43d/0x550 net/ipv4/udp_tunnel_core.c:81 l2tp_tunnel_register+0xc51/0x1210 net/l2tp/l2tp_core.c:1509 pppol2tp_connect+0xcdc/0x1a10 net/l2tp/l2tp_ppp.c:723 Trim the writer-side critical section for sk_callback_lock down to the minimum, so that it covers only operations on sk_user_data. Also, when grabbing the sk_callback_lock, we always need to disable BH, as Eric points out. Failing to do so leads to deadlocks because we acquire sk_callback_lock in softirq context, which can get stuck waiting on us if: 1) it runs on the same CPU, or CPU0 ---- lock(clock-AF_INET6); <Interrupt> lock(clock-AF_INET6); 2) lock ordering leads to priority inversion CPU0 CPU1 ---- ---- lock(clock-AF_INET6); local_irq_disable(); lock(&tcp_hashinfo.bhash[i].lock); lock(clock-AF_INET6); <Interrupt> lock(&tcp_hashinfo.bhash[i].lock); ... as syzbot reports [2,3]. Use the _bh variants for write_(un)lock. [1] https://lore.kernel.org/netdev/0000000000004e78ec05eda79749@google.com/ [2] https://lore.kernel.org/netdev/000000000000e38b6605eda76f98@google.com/ [3] https://lore.kernel.org/netdev/000000000000dfa31e05eda76f75@google.com/ v2: - Check and set sk_user_data while holding sk_callback_lock for both L2TP encapsulation types (IP and UDP) (Tetsuo) Cc: Tom Parkin <tparkin@katalix.com> Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Fixes: b68777d54fac ("l2tp: Serialize access to sk_user_data with sk_callback_lock") Reported-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot+703d9e154b3b58277261@syzkaller.appspotmail.com Reported-by: syzbot+50680ced9e98a61f7698@syzkaller.appspotmail.com Reported-by: syzbot+de987172bb74a381879b@syzkaller.appspotmail.com Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-11-23net: dm9051: Fix missing dev_kfree_skb() in dm9051_loop_rx()Yuan Can
The dm9051_loop_rx() returns without release skb when dm9051_stop_mrcmd() returns error, free the skb to avoid this leak. Fixes: 2dc95a4d30ed ("net: Add dm9051 driver") Signed-off-by: Yuan Can <yuancan@huawei.com> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-11-23arcnet: fix potential memory leak in com20020_probe()Wang Hai
In com20020_probe(), if com20020_config() fails, dev and info will not be freed, which will lead to a memory leak. This patch adds freeing dev and info after com20020_config() fails to fix this bug. Compile tested only. Fixes: 15b99ac17295 ("[PATCH] pcmcia: add return value to _config() functions") Signed-off-by: Wang Hai <wanghai38@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-11-22Merge tag 'mlx5-fixes-2022-11-21' of ↵Jakub Kicinski
git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux Saeed Mahameed says: ==================== mlx5 fixes 2022-11-21 This series provides bug fixes to mlx5 driver. * tag 'mlx5-fixes-2022-11-21' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux: net/mlx5e: Fix possible race condition in macsec extended packet number update routine net/mlx5e: Fix MACsec update SecY net/mlx5e: Fix MACsec SA initialization routine net/mlx5e: Remove leftovers from old XSK queues enumeration net/mlx5e: Offload rule only when all encaps are valid net/mlx5e: Fix missing alignment in size of MTT/KLM entries net/mlx5: Fix sync reset event handler error flow net/mlx5: E-Switch, Set correctly vport destination net/mlx5: Lag, avoid lockdep warnings net/mlx5: Fix handling of entry refcount when command is not issued to FW net/mlx5: cmdif, Print info on any firmware cmd failure to tracepoint net/mlx5: SF: Fix probing active SFs during driver probe phase net/mlx5: Fix FW tracer timestamp calculation net/mlx5: Do not query pci info while pci disabled ==================== Link: https://lore.kernel.org/r/20221122022559.89459-1-saeed@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-22ipv4: Fix error return code in fib_table_insert()Ziyang Xuan
In fib_table_insert(), if the alias was already inserted, but node not exist, the error code should be set before return from error handling path. Fixes: a6c76c17df02 ("ipv4: Notify route after insertion to the routing table") Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com> Link: https://lore.kernel.org/r/20221120072838.2167047-1-william.xuanziyang@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-22Merge branch 'net-ethernet-mtk_eth_soc-fix-memory-leak-in-error-path'Jakub Kicinski
Yan Cangang says: ==================== net: ethernet: mtk_eth_soc: fix memory leak in error path ==================== Link: https://lore.kernel.org/r/20221120055259.224555-1-nalanzeyu@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-22net: ethernet: mtk_eth_soc: fix memory leak in error pathYan Cangang
In mtk_ppe_init(), when dmam_alloc_coherent() or devm_kzalloc() failed, the rhashtable ppe->l2_flows isn't destroyed. Fix it. In mtk_probe(), when mtk_ppe_init() or mtk_eth_offload_init() or register_netdev() failed, have the same problem. Fix it. Fixes: 33fc42de3327 ("net: ethernet: mtk_eth_soc: support creating mac address based offload entries") Signed-off-by: Yan Cangang <nalanzeyu@gmail.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-22net: ethernet: mtk_eth_soc: fix resource leak in error pathYan Cangang
In mtk_probe(), when mtk_ppe_init() or mtk_eth_offload_init() failed, mtk_mdio_cleanup() isn't called. Fix it. Fixes: ba37b7caf1ed ("net: ethernet: mtk_eth_soc: add support for initializing the PPE") Fixes: 502e84e2382d ("net: ethernet: mtk_eth_soc: add flow offloading support") Signed-off-by: Yan Cangang <nalanzeyu@gmail.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-22net: ethernet: mtk_eth_soc: fix potential memory leak in mtk_rx_alloc()Ziyang Xuan
When fail to dma_map_single() in mtk_rx_alloc(), it returns directly. But the memory allocated for local variable data is not freed, and local variabel data has not been attached to ring->data[i] yet, so the memory allocated for local variable data will not be freed outside mtk_rx_alloc() too. Thus memory leak would occur in this scenario. Add skb_free_frag(data) when dma_map_single() failed. Fixes: 23233e577ef9 ("net: ethernet: mtk_eth_soc: rely on page_pool for single page buffers") Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com> Acked-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Link: https://lore.kernel.org/r/20221120035405.1464341-1-william.xuanziyang@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-22Merge branch ↵Jakub Kicinski
'dccp-tcp-fix-bhash2-issues-related-to-warn_on-in-inet_csk_get_port' Kuniyuki Iwashima says: ==================== dccp/tcp: Fix bhash2 issues related to WARN_ON() in inet_csk_get_port(). syzkaller was hitting a WARN_ON() in inet_csk_get_port() in the 4th patch, which was because we forgot to fix up bhash2 bucket when connect() for a socket bound to a wildcard address fails in __inet_stream_connect(). There was a similar report [0], but its repro does not fire the WARN_ON() due to inconsistent error handling. When connect() for a socket bound to a wildcard address fails, saddr may or may not be reset depending on where the failure happens. When we fail in __inet_stream_connect(), sk->sk_prot->disconnect() resets saddr. OTOH, in (dccp|tcp)_v[46]_connect(), if we fail after inet_hash6?_connect(), we forget to reset saddr. We fix this inconsistent error handling in the 1st patch, and then we'll fix the bhash2 WARN_ON() issue. Note that there is still an issue in that we reset saddr without checking if there are conflicting sockets in bhash and bhash2, but this should be another series. See [1][2] for the previous discussion. [0]: https://lore.kernel.org/netdev/0000000000003f33bc05dfaf44fe@google.com/ [1]: https://lore.kernel.org/netdev/20221029001249.86337-1-kuniyu@amazon.com/ [2]: https://lore.kernel.org/netdev/20221103172419.20977-1-kuniyu@amazon.com/ [3]: https://lore.kernel.org/netdev/20221118081906.053d5231@kernel.org/T/#m00aafedb29ff0b55d5e67aef0252ef1baaf4b6ee ==================== Link: https://lore.kernel.org/r/20221119014914.31792-1-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-22dccp/tcp: Fixup bhash2 bucket when connect() fails.Kuniyuki Iwashima
If a socket bound to a wildcard address fails to connect(), we only reset saddr and keep the port. Then, we have to fix up the bhash2 bucket; otherwise, the bucket has an inconsistent address in the list. Also, listen() for such a socket will fire the WARN_ON() in inet_csk_get_port(). [0] Note that when a system runs out of memory, we give up fixing the bucket and unlink sk from bhash and bhash2 by inet_put_port(). [0]: WARNING: CPU: 0 PID: 207 at net/ipv4/inet_connection_sock.c:548 inet_csk_get_port (net/ipv4/inet_connection_sock.c:548 (discriminator 1)) Modules linked in: CPU: 0 PID: 207 Comm: bhash2_prev_rep Not tainted 6.1.0-rc3-00799-gc8421681c845 #63 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.amzn2022.0.1 04/01/2014 RIP: 0010:inet_csk_get_port (net/ipv4/inet_connection_sock.c:548 (discriminator 1)) Code: 74 a7 eb 93 48 8b 54 24 18 0f b7 cb 4c 89 e6 4c 89 ff e8 48 b2 ff ff 49 8b 87 18 04 00 00 e9 32 ff ff ff 0f 0b e9 34 ff ff ff <0f> 0b e9 42 ff ff ff 41 8b 7f 50 41 8b 4f 54 89 fe 81 f6 00 00 ff RSP: 0018:ffffc900003d7e50 EFLAGS: 00010202 RAX: ffff8881047fb500 RBX: 0000000000004e20 RCX: 0000000000000000 RDX: 000000000000000a RSI: 00000000fffffe00 RDI: 00000000ffffffff RBP: ffffffff8324dc00 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000004e20 R15: ffff8881054e1280 FS: 00007f8ac04dc740(0000) GS:ffff88842fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001540 CR3: 00000001055fa003 CR4: 0000000000770ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <TASK> inet_csk_listen_start (net/ipv4/inet_connection_sock.c:1205) inet_listen (net/ipv4/af_inet.c:228) __sys_listen (net/socket.c:1810) __x64_sys_listen (net/socket.c:1819 net/socket.c:1817 net/socket.c:1817) do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) RIP: 0033:0x7f8ac051de5d Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 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 8b 0d 93 af 1b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffc1c177248 EFLAGS: 00000206 ORIG_RAX: 0000000000000032 RAX: ffffffffffffffda RBX: 0000000020001550 RCX: 00007f8ac051de5d RDX: ffffffffffffff80 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007ffc1c177270 R08: 0000000000000018 R09: 0000000000000007 R10: 0000000020001540 R11: 0000000000000206 R12: 00007ffc1c177388 R13: 0000000000401169 R14: 0000000000403e18 R15: 00007f8ac0723000 </TASK> Fixes: 28044fc1d495 ("net: Add a bhash2 table hashed by port and address") Reported-by: syzbot <syzkaller@googlegroups.com> Reported-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Acked-by: Joanne Koong <joannelkoong@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-22dccp/tcp: Update saddr under bhash's lock.Kuniyuki Iwashima
When we call connect() for a socket bound to a wildcard address, we update saddr locklessly. However, it could result in a data race; another thread iterating over bhash might see a corrupted address. Let's update saddr under the bhash bucket's lock. Fixes: 3df80d9320bc ("[DCCP]: Introduce DCCPv6") Fixes: 7c657876b63c ("[DCCP]: Initial implementation") Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Acked-by: Joanne Koong <joannelkoong@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-22dccp/tcp: Remove NULL check for prev_saddr in inet_bhash2_update_saddr().Kuniyuki Iwashima
When we call inet_bhash2_update_saddr(), prev_saddr is always non-NULL. Let's remove the unnecessary test. Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Acked-by: Joanne Koong <joannelkoong@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-22dccp/tcp: Reset saddr on failure after inet6?_hash_connect().Kuniyuki Iwashima
When connect() is called on a socket bound to the wildcard address, we change the socket's saddr to a local address. If the socket fails to connect() to the destination, we have to reset the saddr. However, when an error occurs after inet_hash6?_connect() in (dccp|tcp)_v[46]_conect(), we forget to reset saddr and leave the socket bound to the address. From the user's point of view, whether saddr is reset or not varies with errno. Let's fix this inconsistent behaviour. Note that after this patch, the repro [0] will trigger the WARN_ON() in inet_csk_get_port() again, but this patch is not buggy and rather fixes a bug papering over the bhash2's bug for which we need another fix. For the record, the repro causes -EADDRNOTAVAIL in inet_hash6_connect() by this sequence: s1 = socket() s1.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1) s1.bind(('127.0.0.1', 10000)) s1.sendto(b'hello', MSG_FASTOPEN, (('127.0.0.1', 10000))) # or s1.connect(('127.0.0.1', 10000)) s2 = socket() s2.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1) s2.bind(('0.0.0.0', 10000)) s2.connect(('127.0.0.1', 10000)) # -EADDRNOTAVAIL s2.listen(32) # WARN_ON(inet_csk(sk)->icsk_bind2_hash != tb2); [0]: https://syzkaller.appspot.com/bug?extid=015d756bbd1f8b5c8f09 Fixes: 3df80d9320bc ("[DCCP]: Introduce DCCPv6") Fixes: 7c657876b63c ("[DCCP]: Initial implementation") Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Acked-by: Joanne Koong <joannelkoong@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-11-22netfilter: flowtable_offload: add missing lockingFelix Fietkau
nf_flow_table_block_setup and the driver TC_SETUP_FT call can modify the flow block cb list while they are being traversed elsewhere, causing a crash. Add a write lock around the calls to protect readers Fixes: c29f74e0df7a ("netfilter: nf_flow_table: hardware offload support") Reported-by: Chad Monroe <chad.monroe@smartrg.com> Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2022-11-22netfilter: ipset: restore allowing 64 clashing elements in hash:net,ifaceJozsef Kadlecsik
The commit 510841da1fcc ("netfilter: ipset: enforce documented limit to prevent allocating huge memory") was too strict and prevented to add up to 64 clashing elements to a hash:net,iface type of set. This patch fixes the issue and now the type behaves as documented. Fixes: 510841da1fcc ("netfilter: ipset: enforce documented limit to prevent allocating huge memory") Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2022-11-22tsnep: Fix rotten packetsGerhard Engleder
If PTP synchronisation is done every second, then sporadic the interval is higher than one second: ptp4l[696.582]: master offset -17 s2 freq -1891 path delay 573 ptp4l[697.582]: master offset -22 s2 freq -1901 path delay 573 ptp4l[699.368]: master offset -1 s2 freq -1887 path delay 573 ^^^^^^^ Should be 698.582! This problem is caused by rotten packets, which are received after polling but before interrupts are enabled again. This can be fixed by checking for pending work and rescheduling if necessary after interrupts has been enabled again. Fixes: 403f69bbdbad ("tsnep: Add TSN endpoint Ethernet MAC driver") Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com> Link: https://lore.kernel.org/r/20221119211825.81805-1-gerhard@engleder-embedded.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-11-22octeontx2-pf: Remove duplicate MACSEC settingZheng Bin
Commit 4581dd480c9e ("net: octeontx2-pf: mcs: consider MACSEC setting") has already added "depends on MACSEC || !MACSEC", so remove it. Signed-off-by: Zheng Bin <zhengbin13@huawei.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20221119133616.3583538-1-zhengbin13@huawei.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-11-22bnx2x: fix pci device refcount leak in bnx2x_vf_is_pcie_pending()Yang Yingliang
As comment of pci_get_domain_bus_and_slot() says, it returns a pci device with refcount increment, when finish using it, the caller must decrement the reference count by calling pci_dev_put(). Call pci_dev_put() before returning from bnx2x_vf_is_pcie_pending() to avoid refcount leak. Fixes: b56e9670ffa4 ("bnx2x: Prepare device and initialize VF database") Suggested-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Link: https://lore.kernel.org/r/20221119070202.1407648-1-yangyingliang@huawei.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-11-22NFC: nci: fix memory leak in nci_rx_data_packet()Liu Shixin
Syzbot reported a memory leak about skb: unreferenced object 0xffff88810e144e00 (size 240): comm "syz-executor284", pid 3701, jiffies 4294952403 (age 12.620s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff83ab79a9>] __alloc_skb+0x1f9/0x270 net/core/skbuff.c:497 [<ffffffff82a5cf64>] alloc_skb include/linux/skbuff.h:1267 [inline] [<ffffffff82a5cf64>] virtual_ncidev_write+0x24/0xe0 drivers/nfc/virtual_ncidev.c:116 [<ffffffff815f6503>] do_loop_readv_writev fs/read_write.c:759 [inline] [<ffffffff815f6503>] do_loop_readv_writev fs/read_write.c:743 [inline] [<ffffffff815f6503>] do_iter_write+0x253/0x300 fs/read_write.c:863 [<ffffffff815f66ed>] vfs_writev+0xdd/0x240 fs/read_write.c:934 [<ffffffff815f68f6>] do_writev+0xa6/0x1c0 fs/read_write.c:977 [<ffffffff848802d5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [<ffffffff848802d5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd In nci_rx_data_packet(), if we don't get a valid conn_info, we will return directly but forget to release the skb. Reported-by: syzbot+cdb9a427d1bc08815104@syzkaller.appspotmail.com Fixes: 4aeee6871e8c ("NFC: nci: Add dynamic logical connections support") Signed-off-by: Liu Shixin <liushixin2@huawei.com> Link: https://lore.kernel.org/r/20221118082419.239475-1-liushixin2@huawei.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-11-22net: sched: allow act_ct to be built without NF_NATXin Long
In commit f11fe1dae1c4 ("net/sched: Make NET_ACT_CT depends on NF_NAT"), it fixed the build failure when NF_NAT is m and NET_ACT_CT is y by adding depends on NF_NAT for NET_ACT_CT. However, it would also cause NET_ACT_CT cannot be built without NF_NAT, which is not expected. This patch fixes it by changing to use "(!NF_NAT || NF_NAT)" as the depend. Fixes: f11fe1dae1c4 ("net/sched: Make NET_ACT_CT depends on NF_NAT") Signed-off-by: Xin Long <lucien.xin@gmail.com> Link: https://lore.kernel.org/r/b6386f28d1ba34721795fb776a91cbdabb203447.1668807183.git.lucien.xin@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-11-22net: sparx5: fix error handling in sparx5_port_open()Liu Jian
If phylink_of_phy_connect() fails, the port should be disabled. If sparx5_serdes_set()/phy_power_on() fails, the port should be disabled and the phylink should be stopped and disconnected. Fixes: 946e7fd5053a ("net: sparx5: add port module support") Fixes: f3cad2611a77 ("net: sparx5: add hostmode with phylink support") Signed-off-by: Liu Jian <liujian56@huawei.com> Tested-by: Bjarni Jonasson <bjarni.jonasson@microchip.com> Reviewed-by: Steen Hegelund <steen.hegelund@microchip.com> Link: https://lore.kernel.org/r/20221117125918.203997-1-liujian56@huawei.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-11-22sfc: fix potential memleak in __ef100_hard_start_xmit()Zhang Changzhong
The __ef100_hard_start_xmit() returns NETDEV_TX_OK without freeing skb in error handling case, add dev_kfree_skb_any() to fix it. Fixes: 51b35a454efd ("sfc: skeleton EF100 PF driver") Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com> Acked-by: Martin Habets <habetsm.xilinx@gmail.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Link: https://lore.kernel.org/r/1668671409-10909-1-git-send-email-zhangchangzhong@huawei.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-11-22net: wwan: iosm: use ACPI_FREE() but not kfree() in ipc_pcie_read_bios_cfg()Wang ShaoBo
acpi_evaluate_dsm() should be coupled with ACPI_FREE() to free the ACPI memory, because we need to track the allocation of acpi_object when ACPI_DBG_TRACK_ALLOCATIONS enabled, so use ACPI_FREE() instead of kfree(). Fixes: d38a648d2d6c ("net: wwan: iosm: fix memory leak in ipc_pcie_read_bios_cfg") Signed-off-by: Wang ShaoBo <bobo.shaobowang@huawei.com> Link: https://lore.kernel.org/r/20221118062447.2324881-1-bobo.shaobowang@huawei.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-11-22xfrm: Fix ignored return value in xfrm6_init()Chen Zhongjin
When IPv6 module initializing in xfrm6_init(), register_pernet_subsys() is possible to fail but its return value is ignored. If IPv6 initialization fails later and xfrm6_fini() is called, removing uninitialized list in xfrm6_net_ops will cause null-ptr-deref: KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 330 Comm: insmod RIP: 0010:unregister_pernet_operations+0xc9/0x450 Call Trace: <TASK> unregister_pernet_subsys+0x31/0x3e xfrm6_fini+0x16/0x30 [ipv6] ip6_route_init+0xcd/0x128 [ipv6] inet6_init+0x29c/0x602 [ipv6] ... Fix it by catching the error return value of register_pernet_subsys(). Fixes: 8d068875caca ("xfrm: make gc_thresh configurable in all namespaces") Signed-off-by: Chen Zhongjin <chenzhongjin@huawei.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2022-11-22xfrm: Fix oops in __xfrm_state_delete()Thomas Jarosch
Kernel 5.14 added a new "byseq" index to speed up xfrm_state lookups by sequence number in commit fe9f1d8779cb ("xfrm: add state hashtable keyed by seq") While the patch was thorough, the function pfkey_send_new_mapping() in net/af_key.c also modifies x->km.seq and never added the current xfrm_state to the "byseq" index. This leads to the following kernel Ooops: BUG: kernel NULL pointer dereference, address: 0000000000000000 .. RIP: 0010:__xfrm_state_delete+0xc9/0x1c0 .. Call Trace: <TASK> xfrm_state_delete+0x1e/0x40 xfrm_del_sa+0xb0/0x110 [xfrm_user] xfrm_user_rcv_msg+0x12d/0x270 [xfrm_user] ? remove_entity_load_avg+0x8a/0xa0 ? copy_to_user_state_extra+0x580/0x580 [xfrm_user] netlink_rcv_skb+0x51/0x100 xfrm_netlink_rcv+0x30/0x50 [xfrm_user] netlink_unicast+0x1a6/0x270 netlink_sendmsg+0x22a/0x480 __sys_sendto+0x1a6/0x1c0 ? __audit_syscall_entry+0xd8/0x130 ? __audit_syscall_exit+0x249/0x2b0 __x64_sys_sendto+0x23/0x30 do_syscall_64+0x3a/0x90 entry_SYSCALL_64_after_hwframe+0x61/0xcb Exact location of the crash in __xfrm_state_delete(): if (x->km.seq) hlist_del_rcu(&x->byseq); The hlist_node "byseq" was never populated. The bug only triggers if a new NAT traversal mapping (changed IP or port) is detected in esp_input_done2() / esp6_input_done2(), which in turn indirectly calls pfkey_send_new_mapping() *if* the kernel is compiled with CONFIG_NET_KEY and "af_key" is active. The PF_KEYv2 message SADB_X_NAT_T_NEW_MAPPING is not part of RFC 2367. Various implementations have been examined how they handle the "sadb_msg_seq" header field: - racoon (Android): does not process SADB_X_NAT_T_NEW_MAPPING - strongswan: does not care about sadb_msg_seq - openswan: does not care about sadb_msg_seq There is no standard how PF_KEYv2 sadb_msg_seq should be populated for SADB_X_NAT_T_NEW_MAPPING and it's not used in popular implementations either. Herbert Xu suggested we should just use the current km.seq value as is. This fixes the root cause of the oops since we no longer modify km.seq itself. The update of "km.seq" looks like a copy'n'paste error from pfkey_send_acquire(). SADB_ACQUIRE must indeed assign a unique km.seq number according to RFC 2367. It has been verified that code paths involving pfkey_send_acquire() don't cause the same Oops. PF_KEYv2 SADB_X_NAT_T_NEW_MAPPING support was originally added here: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git commit cbc3488685b20e7b2a98ad387a1a816aada569d8 Author: Derek Atkins <derek@ihtfp.com> AuthorDate: Wed Apr 2 13:21:02 2003 -0800 [IPSEC]: Implement UDP Encapsulation framework. In particular, implement ESPinUDP encapsulation for IPsec Nat Traversal. A note on triggering the bug: I was not able to trigger it using VMs. There is one VPN using a high latency link on our production VPN server that triggered it like once a day though. Link: https://github.com/strongswan/strongswan/issues/992 Link: https://lore.kernel.org/netdev/00959f33ee52c4b3b0084d42c430418e502db554.1652340703.git.antony.antony@secunet.com/T/ Link: https://lore.kernel.org/netdev/20221027142455.3975224-1-chenzhihao@meizu.com/T/ Fixes: fe9f1d8779cb ("xfrm: add state hashtable keyed by seq") Reported-by: Roth Mark <rothm@mail.com> Reported-by: Zhihao Chen <chenzhihao@meizu.com> Tested-by: Roth Mark <rothm@mail.com> Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com> Acked-by: Antony Antony <antony.antony@secunet.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2022-11-21ice: fix handling of burst Tx timestampsJacob Keller
Commit 1229b33973c7 ("ice: Add low latency Tx timestamp read") refactored PTP timestamping logic to use a threaded IRQ instead of a separate kthread. This implementation introduced ice_misc_intr_thread_fn and redefined the ice_ptp_process_ts function interface to return a value of whether or not the timestamp processing was complete. ice_misc_intr_thread_fn would take the return value from ice_ptp_process_ts and convert it into either IRQ_HANDLED if there were no more timestamps to be processed, or IRQ_WAKE_THREAD if the thread should continue processing. This is not correct, as the kernel does not re-schedule threaded IRQ functions automatically. IRQ_WAKE_THREAD can only be used by the main IRQ function. This results in the ice_ptp_process_ts function (and in turn the ice_ptp_tx_tstamp function) from only being called exactly once per interrupt. If an application sends a burst of Tx timestamps without waiting for a response, the interrupt will trigger for the first timestamp. However, later timestamps may not have arrived yet. This can result in dropped or discarded timestamps. Worse, on E822 hardware this results in the interrupt logic getting stuck such that no future interrupts will be triggered. The result is complete loss of Tx timestamp functionality. Fix this by modifying the ice_misc_intr_thread_fn to perform its own polling of the ice_ptp_process_ts function. We sleep for a few microseconds between attempts to avoid wasting significant CPU time. The value was chosen to allow time for the Tx timestamps to complete without wasting so much time that we overrun application wait budgets in the worst case. The ice_ptp_process_ts function also currently returns false in the event that the Tx tracker is not initialized. This would result in the threaded IRQ handler never exiting if it gets started while the tracker is not initialized. Fix the function to appropriately return true when the tracker is not initialized. Note that this will not reproduce with default ptp4l behavior, as the program always synchronously waits for a timestamp response before sending another timestamp request. Reported-by: Siddaraju DH <siddaraju.dh@intel.com> Fixes: 1229b33973c7 ("ice: Add low latency Tx timestamp read") Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Link: https://lore.kernel.org/r/20221118222729.1565317-1-anthony.l.nguyen@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>