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kprobe_emulate_call_indirect
kprobe_emulate_call_indirect currently uses int3_emulate_call to emulate
indirect calls. However, int3_emulate_call always assumes the size of
the call to be 5 bytes when calculating the return address. This is
incorrect for register-based indirect calls in x86, which can be either
2 or 3 bytes depending on whether REX prefix is used. At kprobe runtime,
the incorrect return address causes control flow to land onto the wrong
place after return -- possibly not a valid instruction boundary. This
can lead to a panic like the following:
[ 7.308204][ C1] BUG: unable to handle page fault for address: 000000000002b4d8
[ 7.308883][ C1] #PF: supervisor read access in kernel mode
[ 7.309168][ C1] #PF: error_code(0x0000) - not-present page
[ 7.309461][ C1] PGD 0 P4D 0
[ 7.309652][ C1] Oops: 0000 [#1] SMP
[ 7.309929][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.7.0-rc5-trace-for-next #6
[ 7.310397][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-20220807_005459-localhost 04/01/2014
[ 7.311068][ C1] RIP: 0010:__common_interrupt+0x52/0xc0
[ 7.311349][ C1] Code: 01 00 4d 85 f6 74 39 49 81 fe 00 f0 ff ff 77 30 4c 89 f7 4d 8b 5e 68 41 ba 91 76 d8 42 45 03 53 fc 74 02 0f 0b cc ff d3 65 48 <8b> 05 30 c7 ff 7e 65 4c 89 3d 28 c7 ff 7e 5b 41 5c 41 5e 41 5f c3
[ 7.312512][ C1] RSP: 0018:ffffc900000e0fd0 EFLAGS: 00010046
[ 7.312899][ C1] RAX: 0000000000000001 RBX: 0000000000000023 RCX: 0000000000000001
[ 7.313334][ C1] RDX: 00000000000003cd RSI: 0000000000000001 RDI: ffff888100d302a4
[ 7.313702][ C1] RBP: 0000000000000001 R08: 0ef439818636191f R09: b1621ff338a3b482
[ 7.314146][ C1] R10: ffffffff81e5127b R11: ffffffff81059810 R12: 0000000000000023
[ 7.314509][ C1] R13: 0000000000000000 R14: ffff888100d30200 R15: 0000000000000000
[ 7.314951][ C1] FS: 0000000000000000(0000) GS:ffff88813bc80000(0000) knlGS:0000000000000000
[ 7.315396][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7.315691][ C1] CR2: 000000000002b4d8 CR3: 0000000003028003 CR4: 0000000000370ef0
[ 7.316153][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7.316508][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7.316948][ C1] Call Trace:
[ 7.317123][ C1] <IRQ>
[ 7.317279][ C1] ? __die_body+0x64/0xb0
[ 7.317482][ C1] ? page_fault_oops+0x248/0x370
[ 7.317712][ C1] ? __wake_up+0x96/0xb0
[ 7.317964][ C1] ? exc_page_fault+0x62/0x130
[ 7.318211][ C1] ? asm_exc_page_fault+0x22/0x30
[ 7.318444][ C1] ? __cfi_native_send_call_func_single_ipi+0x10/0x10
[ 7.318860][ C1] ? default_idle+0xb/0x10
[ 7.319063][ C1] ? __common_interrupt+0x52/0xc0
[ 7.319330][ C1] common_interrupt+0x78/0x90
[ 7.319546][ C1] </IRQ>
[ 7.319679][ C1] <TASK>
[ 7.319854][ C1] asm_common_interrupt+0x22/0x40
[ 7.320082][ C1] RIP: 0010:default_idle+0xb/0x10
[ 7.320309][ C1] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 b8 0c 67 40 a5 66 90 0f 00 2d 09 b9 3b 00 fb f4 <fa> c3 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 b8 0c 67 40 a5 e9
[ 7.321449][ C1] RSP: 0018:ffffc9000009bee8 EFLAGS: 00000256
[ 7.321808][ C1] RAX: ffff88813bca8b68 RBX: 0000000000000001 RCX: 000000000001ef0c
[ 7.322227][ C1] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000001ef0c
[ 7.322656][ C1] RBP: ffffc9000009bef8 R08: 8000000000000000 R09: 00000000000008c2
[ 7.323083][ C1] R10: 0000000000000000 R11: ffffffff81058e70 R12: 0000000000000000
[ 7.323530][ C1] R13: ffff8881002b30c0 R14: 0000000000000000 R15: 0000000000000000
[ 7.323948][ C1] ? __cfi_lapic_next_deadline+0x10/0x10
[ 7.324239][ C1] default_idle_call+0x31/0x50
[ 7.324464][ C1] do_idle+0xd3/0x240
[ 7.324690][ C1] cpu_startup_entry+0x25/0x30
[ 7.324983][ C1] start_secondary+0xb4/0xc0
[ 7.325217][ C1] secondary_startup_64_no_verify+0x179/0x17b
[ 7.325498][ C1] </TASK>
[ 7.325641][ C1] Modules linked in:
[ 7.325906][ C1] CR2: 000000000002b4d8
[ 7.326104][ C1] ---[ end trace 0000000000000000 ]---
[ 7.326354][ C1] RIP: 0010:__common_interrupt+0x52/0xc0
[ 7.326614][ C1] Code: 01 00 4d 85 f6 74 39 49 81 fe 00 f0 ff ff 77 30 4c 89 f7 4d 8b 5e 68 41 ba 91 76 d8 42 45 03 53 fc 74 02 0f 0b cc ff d3 65 48 <8b> 05 30 c7 ff 7e 65 4c 89 3d 28 c7 ff 7e 5b 41 5c 41 5e 41 5f c3
[ 7.327570][ C1] RSP: 0018:ffffc900000e0fd0 EFLAGS: 00010046
[ 7.327910][ C1] RAX: 0000000000000001 RBX: 0000000000000023 RCX: 0000000000000001
[ 7.328273][ C1] RDX: 00000000000003cd RSI: 0000000000000001 RDI: ffff888100d302a4
[ 7.328632][ C1] RBP: 0000000000000001 R08: 0ef439818636191f R09: b1621ff338a3b482
[ 7.329223][ C1] R10: ffffffff81e5127b R11: ffffffff81059810 R12: 0000000000000023
[ 7.329780][ C1] R13: 0000000000000000 R14: ffff888100d30200 R15: 0000000000000000
[ 7.330193][ C1] FS: 0000000000000000(0000) GS:ffff88813bc80000(0000) knlGS:0000000000000000
[ 7.330632][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7.331050][ C1] CR2: 000000000002b4d8 CR3: 0000000003028003 CR4: 0000000000370ef0
[ 7.331454][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7.331854][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7.332236][ C1] Kernel panic - not syncing: Fatal exception in interrupt
[ 7.332730][ C1] Kernel Offset: disabled
[ 7.333044][ C1] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---
The relevant assembly code is (from objdump, faulting address
highlighted):
ffffffff8102ed9d: 41 ff d3 call *%r11
ffffffff8102eda0: 65 48 <8b> 05 30 c7 ff mov %gs:0x7effc730(%rip),%rax
The emulation incorrectly sets the return address to be ffffffff8102ed9d
+ 0x5 = ffffffff8102eda2, which is the 8b byte in the middle of the next
mov. This in turn causes incorrect subsequent instruction decoding and
eventually triggers the page fault above.
Instead of invoking int3_emulate_call, perform push and jmp emulation
directly in kprobe_emulate_call_indirect. At this point we can obtain
the instruction size from p->ainsn.size so that we can calculate the
correct return address.
Link: https://lore.kernel.org/all/20240102233345.385475-1-jinghao7@illinois.edu/
Fixes: 6256e668b7af ("x86/kprobes: Use int3 instead of debug trap for single-step")
Cc: stable@vger.kernel.org
Signed-off-by: Jinghao Jia <jinghao7@illinois.edu>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
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Pull smb client fixes from Steve French:
"Three important multichannel smb3 client fixes found in recent
testing:
- fix oops due to incorrect refcounting of interfaces after
disabling multichannel
- fix possible unrecoverable session state after disabling
multichannel with active sessions
- fix two places that were missing use of chan_lock"
* tag '6.7-rc8-smb3-mchan-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: do not depend on release_iface for maintaining iface_list
cifs: cifs_chan_is_iface_active should be called with chan_lock held
cifs: after disabling multichannel, mark tcon for reconnect
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parse_server_interfaces should be in complete charge of maintaining
the iface_list linked list. Today, iface entries are removed
from the list only when the last refcount is dropped.
i.e. in release_iface. However, this can result in undercounting
of refcount if the server stops advertising interfaces (which
Azure SMB server does).
This change puts parse_server_interfaces in full charge of
maintaining the iface_list. So if an empty list is returned
by the server, the entries in the list will immediately be
removed. This way, a following call to the same function will
not find entries in the list.
Fixes: aa45dadd34e4 ("cifs: change iface_list from array to sorted linked list")
Cc: stable@vger.kernel.org
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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cifs_chan_is_iface_active checks the channels of a session to see
if the associated iface is active. This should always happen
with chan_lock held. However, these two callers of this function
were missing this locking.
This change makes sure the function calls are protected with
proper locking.
Fixes: b54034a73baf ("cifs: during reconnect, update interface if necessary")
Fixes: fa1d0508bdd4 ("cifs: account for primary channel in the interface list")
Cc: stable@vger.kernel.org
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Once the server disables multichannel for an active multichannel
session, on the following reconnect, the client would reduce
the number of channels to 1. However, it could be the case that
the tree connect was active on one of these disabled channels.
This results in an unrecoverable state.
This change fixes that by making sure that whenever a channel
is being terminated, the session and tcon are marked for
reconnect too. This could mean a few redundant tree connect
calls to the server, but considering that this is not a frequent
event, we should be okay.
Fixes: ee1d21794e55 ("cifs: handle when server stops supporting multichannel")
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from wireless and netfilter.
We haven't accumulated much over the break. If it wasn't for the
uninterrupted stream of fixes for Intel drivers this PR would be very
slim. There was a handful of user reports, however, either they stood
out because of the lower traffic or users have had more time to test
over the break. The ones which are v6.7-relevant should be wrapped up.
Current release - regressions:
- Revert "net: ipv6/addrconf: clamp preferred_lft to the minimum
required", it caused issues on networks where routers send prefixes
with preferred_lft=0
- wifi:
- iwlwifi: pcie: don't synchronize IRQs from IRQ, prevent deadlock
- mac80211: fix re-adding debugfs entries during reconfiguration
Current release - new code bugs:
- tcp: print AO/MD5 messages only if there are any keys
Previous releases - regressions:
- virtio_net: fix missing dma unmap for resize, prevent OOM
Previous releases - always broken:
- mptcp: prevent tcp diag from closing listener subflows
- nf_tables:
- set transport header offset for egress hook, fix IPv4 mangling
- skip set commit for deleted/destroyed sets, avoid double deactivation
- nat: make sure action is set for all ct states, fix openvswitch
matching on ICMP packets in related state
- eth: mlxbf_gige: fix receive hang under heavy traffic
- eth: r8169: fix PCI error on system resume for RTL8168FP
- net: add missing getsockopt(SO_TIMESTAMPING_NEW) and cmsg handling"
* tag 'net-6.7-rc9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (52 commits)
net/tcp: Only produce AO/MD5 logs if there are any keys
net: Implement missing SO_TIMESTAMPING_NEW cmsg support
bnxt_en: Remove mis-applied code from bnxt_cfg_ntp_filters()
net: ravb: Wait for operating mode to be applied
asix: Add check for usbnet_get_endpoints
octeontx2-af: Re-enable MAC TX in otx2_stop processing
octeontx2-af: Always configure NIX TX link credits based on max frame size
net/smc: fix invalid link access in dumping SMC-R connections
net/qla3xxx: fix potential memleak in ql_alloc_buffer_queues
virtio_net: fix missing dma unmap for resize
igc: Fix hicredit calculation
ice: fix Get link status data length
i40e: Restore VF MSI-X state during PCI reset
i40e: fix use-after-free in i40e_aqc_add_filters()
net: Save and restore msg_namelen in sock_sendmsg
netfilter: nft_immediate: drop chain reference counter on error
netfilter: nf_nat: fix action not being set for all ct states
net: bcmgenet: Fix FCS generation for fragmented skbuffs
mptcp: prevent tcp diag from closing listener subflows
MAINTAINERS: add Geliang as reviewer for MPTCP
...
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User won't care about inproper hash options in the TCP header if they
don't use neither TCP-AO nor TCP-MD5. Yet, those logs can add up in
syslog, while not being a real concern to the host admin:
> kernel: TCP: TCP segment has incorrect auth options set for XX.20.239.12.54681->XX.XX.90.103.80 [S]
Keep silent and avoid logging when there aren't any keys in the system.
Side-note: I also defined static_branch_tcp_*() helpers to avoid more
ifdeffery, going to remove more ifdeffery further with their help.
Reported-by: Christian Kujau <lists@nerdbynature.de>
Closes: https://lore.kernel.org/all/f6b59324-1417-566f-a976-ff2402718a8d@nerdbynature.de/
Signed-off-by: Dmitry Safonov <dima@arista.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Fixes: 2717b5adea9e ("net/tcp: Add tcp_hash_fail() ratelimited logs")
Link: https://lore.kernel.org/r/20240104-tcp_hash_fail-logs-v1-1-ff3e1f6f9e72@arista.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2024-01-03 (i40e, ice, igc)
This series contains updates to i40e, ice, and igc drivers.
Ke Xiao fixes use after free for unicast filters on i40e.
Andrii restores VF MSI-X flag after PCI reset on i40e.
Paul corrects admin queue link status structure to fulfill firmware
expectations for ice.
Rodrigo Cataldo corrects value used for hicredit calculations on igc.
* '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
igc: Fix hicredit calculation
ice: fix Get link status data length
i40e: Restore VF MSI-X state during PCI reset
i40e: fix use-after-free in i40e_aqc_add_filters()
====================
Link: https://lore.kernel.org/r/20240103193254.822968-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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According to the Intel Software Manual for I225, Section 7.5.2.7,
hicredit should be multiplied by the constant link-rate value, 0x7736.
Currently, the old constant link-rate value, 0x7735, from the boards
supported on igb are being used, most likely due to a copy'n'paste, as
the rest of the logic is the same for both drivers.
Update hicredit accordingly.
Fixes: 1ab011b0bf07 ("igc: Add support for CBS offloading")
Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>
Signed-off-by: Rodrigo Cataldo <rodrigo.cadore@l-acoustics.com>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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Get link status version 2 (opcode 0x0607) is returning an error because FW
expects a data length of 56 bytes, and this is causing the driver to fail
probe.
Update the get link status version 2 data length to 56 bytes by adding 5
byte reserved5 field to the end of struct ice_aqc_get_link_status_data and
passing it as parameter to offsetofend() to the fix error.
Fixes: 2777d24ec6d1 ("ice: Add ice_get_link_status_datalen")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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During a PCI FLR the MSI-X Enable flag in the VF PCI MSI-X capability
register will be cleared. This can lead to issues when a VF is
assigned to a VM because in these cases the VF driver receives no
indication of the PF PCI error/reset and additionally it is incapable
of restoring the cleared flag in the hypervisor configuration space
without fully reinitializing the driver interrupt functionality.
Since the VF driver is unable to easily resolve this condition on its own,
restore the VF MSI-X flag during the PF PCI reset handling.
Fixes: 19b7960b2da1 ("i40e: implement split PCI error reset handler")
Co-developed-by: Karen Ostrowska <karen.ostrowska@intel.com>
Signed-off-by: Karen Ostrowska <karen.ostrowska@intel.com>
Co-developed-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Andrii Staikov <andrii.staikov@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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Commit 3116f59c12bd ("i40e: fix use-after-free in
i40e_sync_filters_subtask()") avoided use-after-free issues,
by increasing refcount during update the VSI filter list to
the HW. However, it missed the unicast situation.
When deleting an unicast FDB entry, the i40e driver will release
the mac_filter, and i40e_service_task will concurrently request
firmware to add the mac_filter, which will lead to the following
use-after-free issue.
Fix again for both netdev->uc and netdev->mc.
BUG: KASAN: use-after-free in i40e_aqc_add_filters+0x55c/0x5b0 [i40e]
Read of size 2 at addr ffff888eb3452d60 by task kworker/8:7/6379
CPU: 8 PID: 6379 Comm: kworker/8:7 Kdump: loaded Tainted: G
Workqueue: i40e i40e_service_task [i40e]
Call Trace:
dump_stack+0x71/0xab
print_address_description+0x6b/0x290
kasan_report+0x14a/0x2b0
i40e_aqc_add_filters+0x55c/0x5b0 [i40e]
i40e_sync_vsi_filters+0x1676/0x39c0 [i40e]
i40e_service_task+0x1397/0x2bb0 [i40e]
process_one_work+0x56a/0x11f0
worker_thread+0x8f/0xf40
kthread+0x2a0/0x390
ret_from_fork+0x1f/0x40
Allocated by task 21948:
kasan_kmalloc+0xa6/0xd0
kmem_cache_alloc_trace+0xdb/0x1c0
i40e_add_filter+0x11e/0x520 [i40e]
i40e_addr_sync+0x37/0x60 [i40e]
__hw_addr_sync_dev+0x1f5/0x2f0
i40e_set_rx_mode+0x61/0x1e0 [i40e]
dev_uc_add_excl+0x137/0x190
i40e_ndo_fdb_add+0x161/0x260 [i40e]
rtnl_fdb_add+0x567/0x950
rtnetlink_rcv_msg+0x5db/0x880
netlink_rcv_skb+0x254/0x380
netlink_unicast+0x454/0x610
netlink_sendmsg+0x747/0xb00
sock_sendmsg+0xe2/0x120
__sys_sendto+0x1ae/0x290
__x64_sys_sendto+0xdd/0x1b0
do_syscall_64+0xa0/0x370
entry_SYSCALL_64_after_hwframe+0x65/0xca
Freed by task 21948:
__kasan_slab_free+0x137/0x190
kfree+0x8b/0x1b0
__i40e_del_filter+0x116/0x1e0 [i40e]
i40e_del_mac_filter+0x16c/0x300 [i40e]
i40e_addr_unsync+0x134/0x1b0 [i40e]
__hw_addr_sync_dev+0xff/0x2f0
i40e_set_rx_mode+0x61/0x1e0 [i40e]
dev_uc_del+0x77/0x90
rtnl_fdb_del+0x6a5/0x860
rtnetlink_rcv_msg+0x5db/0x880
netlink_rcv_skb+0x254/0x380
netlink_unicast+0x454/0x610
netlink_sendmsg+0x747/0xb00
sock_sendmsg+0xe2/0x120
__sys_sendto+0x1ae/0x290
__x64_sys_sendto+0xdd/0x1b0
do_syscall_64+0xa0/0x370
entry_SYSCALL_64_after_hwframe+0x65/0xca
Fixes: 3116f59c12bd ("i40e: fix use-after-free in i40e_sync_filters_subtask()")
Fixes: 41c445ff0f48 ("i40e: main driver core")
Signed-off-by: Ke Xiao <xiaoke@sangfor.com.cn>
Signed-off-by: Ding Hui <dinghui@sangfor.com.cn>
Cc: Di Zhu <zhudi2@huawei.com>
Reviewed-by: Jan Sokolowski <jan.sokolowski@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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Commit 9718475e6908 ("socket: Add SO_TIMESTAMPING_NEW") added the new
socket option SO_TIMESTAMPING_NEW. However, it was never implemented in
__sock_cmsg_send thus breaking SO_TIMESTAMPING cmsg for platforms using
SO_TIMESTAMPING_NEW.
Fixes: 9718475e6908 ("socket: Add SO_TIMESTAMPING_NEW")
Link: https://lore.kernel.org/netdev/6a7281bf-bc4a-4f75-bb88-7011908ae471@app.fastmail.com/
Signed-off-by: Thomas Lange <thomas@corelatus.se>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20240104085744.49164-1-thomas@corelatus.se
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The 2 lines to check for the BNXT_HWRM_PF_UNLOAD_SP_EVENT bit was
mis-applied to bnxt_cfg_ntp_filters() and should have been applied to
bnxt_sp_task().
Fixes: 19241368443f ("bnxt_en: Send PF driver unload notification to all VFs.")
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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CSR.OPS bits specify the current operating mode and (according to
documentation) they are updated by HW when the operating mode change
request is processed. To comply with this check CSR.OPS before proceeding.
Commit introduces ravb_set_opmode() that does all the necessities for
setting the operating mode (set CCC.OPC (and CCC.GAC, CCC.CSEL, if any) and
wait for CSR.OPS) and call it where needed. This should comply with all the
HW manuals requirements as different manual variants specify that different
modes need to be checked in CSR.OPS when setting CCC.OPC.
If gPTP active in config mode is supported and it needs to be enabled, the
CCC.GAC and CCC.CSEL needs to be configured along with CCC.OPC in the same
write access. For this, ravb_set_opmode() allows passing GAC and CSEL as
part of opmode and the function updates accordingly CCC register.
Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add check for usbnet_get_endpoints() and return the error if it fails
in order to transfer the error.
Fixes: 16626b0cc3d5 ("asix: Add a new driver for the AX88172A")
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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During QoS scheduling testing with multiple strict priority flows, the
netdev tx watchdog timeout routine is invoked when a low priority QoS
queue doesn't get a chance to transmit the packets because other high
priority flows are completely subscribing the transmit link. The netdev
tx watchdog timeout routine will stop MAC RX and TX functionality in
otx2_stop() routine before cleanup of HW TX queues which results in SMQ
flush errors because the packets belonging to low priority queues will
never gets flushed since MAC TX is disabled. This patch fixes the issue
by re-enabling MAC TX to ensure the packets in HW pipeline gets flushed
properly.
Fixes: a7faa68b4e7f ("octeontx2-af: Start/Stop traffic in CGX along with NPC")
Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently the NIX TX link credits are initialized based on the max frame
size that can be transmitted on a link but when the MTU is changed, the
NIX TX link credits are reprogrammed by the SW based on the new MTU value.
Since SMQ max packet length is programmed to max frame size by default,
there is a chance that NIX TX may stall while sending a max frame sized
packet on the link with insufficient credits to send the packet all at
once. This patch avoids stall issue by not changing the link credits
dynamically when the MTU is changed.
Fixes: 1c74b89171c3 ("octeontx2-af: Wait for TX link idle for credits change")
Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for net:
1) Fix nat packets in the related state in OVS, from Brad Cowie.
2) Drop chain reference counter on error path in case chain binding
fails.
* tag 'nf-24-01-03' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
netfilter: nft_immediate: drop chain reference counter on error
netfilter: nf_nat: fix action not being set for all ct states
====================
Link: https://lore.kernel.org/r/20240103113001.137936-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In the init path, nft_data_init() bumps the chain reference counter,
decrement it on error by following the error path which calls
nft_data_release() to restore it.
Fixes: 4bedf9eee016 ("netfilter: nf_tables: fix chain binding transaction logic")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This fixes openvswitch's handling of nat packets in the related state.
In nf_ct_nat_execute(), which is called from nf_ct_nat(), ICMP/ICMPv6
packets in the IP_CT_RELATED or IP_CT_RELATED_REPLY state, which have
not been dropped, will follow the goto, however the placement of the
goto label means that updating the action bit field will be bypassed.
This causes ovs_nat_update_key() to not be called from ovs_ct_nat()
which means the openvswitch match key for the ICMP/ICMPv6 packet is not
updated and the pre-nat value will be retained for the key, which will
result in the wrong openflow rule being matched for that packet.
Move the goto label above where the action bit field is being set so
that it is updated in all cases where the packet is accepted.
Fixes: ebddb1404900 ("net: move the nat function to nf_nat_ovs for ovs and tc")
Signed-off-by: Brad Cowie <brad@faucet.nz>
Reviewed-by: Simon Horman <horms@kernel.org>
Acked-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Aaron Conole <aconole@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2023-12-27 (igc)
This series contains updates to igc driver only.
Kurt Kanzenbach resolves issues around VLAN ntuple rules; correctly
reporting back added rules and checking for valid values.
* '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
igc: Check VLAN EtherType mask
igc: Check VLAN TCI mask
igc: Report VLAN EtherType matching back to user
====================
Link: https://lore.kernel.org/r/20231227210041.3035055-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Currently the driver accepts VLAN EtherType steering rules regardless of
the configured mask. And things might fail silently or with confusing error
messages to the user. The VLAN EtherType can only be matched by full
mask. Therefore, add a check for that.
For instance the following rule is invalid, but the driver accepts it and
ignores the user specified mask:
|root@host:~# ethtool -N enp3s0 flow-type ether vlan-etype 0x8100 \
| m 0x00ff action 0
|Added rule with ID 63
|root@host:~# ethtool --show-ntuple enp3s0
|4 RX rings available
|Total 1 rules
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|Filter: 63
| Flow Type: Raw Ethernet
| Src MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Dest MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Ethertype: 0x0 mask: 0xFFFF
| VLAN EtherType: 0x8100 mask: 0x0
| VLAN: 0x0 mask: 0xffff
| User-defined: 0x0 mask: 0xffffffffffffffff
| Action: Direct to queue 0
After:
|root@host:~# ethtool -N enp3s0 flow-type ether vlan-etype 0x8100 \
| m 0x00ff action 0
|rmgr: Cannot insert RX class rule: Operation not supported
Fixes: 2b477d057e33 ("igc: Integrate flex filter into ethtool ops")
Suggested-by: Suman Ghosh <sumang@marvell.com>
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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Currently the driver accepts VLAN TCI steering rules regardless of the
configured mask. And things might fail silently or with confusing error
messages to the user.
There are two ways to handle the VLAN TCI mask:
1. Match on the PCP field using a VLAN prio filter
2. Match on complete TCI field using a flex filter
Therefore, add checks and code for that.
For instance the following rule is invalid and will be converted into a
VLAN prio rule which is not correct:
|root@host:~# ethtool -N enp3s0 flow-type ether vlan 0x0001 m 0xf000 \
| action 1
|Added rule with ID 61
|root@host:~# ethtool --show-ntuple enp3s0
|4 RX rings available
|Total 1 rules
|
|Filter: 61
| Flow Type: Raw Ethernet
| Src MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Dest MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Ethertype: 0x0 mask: 0xFFFF
| VLAN EtherType: 0x0 mask: 0xffff
| VLAN: 0x1 mask: 0x1fff
| User-defined: 0x0 mask: 0xffffffffffffffff
| Action: Direct to queue 1
After:
|root@host:~# ethtool -N enp3s0 flow-type ether vlan 0x0001 m 0xf000 \
| action 1
|rmgr: Cannot insert RX class rule: Operation not supported
Fixes: 7991487ecb2d ("igc: Allow for Flex Filters to be installed")
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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Currently the driver allows to configure matching by VLAN EtherType.
However, the retrieval function does not report it back to the user. Add
it.
Before:
|root@host:~# ethtool -N enp3s0 flow-type ether vlan-etype 0x8100 action 0
|Added rule with ID 63
|root@host:~# ethtool --show-ntuple enp3s0
|4 RX rings available
|Total 1 rules
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|Filter: 63
| Flow Type: Raw Ethernet
| Src MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Dest MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Ethertype: 0x0 mask: 0xFFFF
| Action: Direct to queue 0
After:
|root@host:~# ethtool -N enp3s0 flow-type ether vlan-etype 0x8100 action 0
|Added rule with ID 63
|root@host:~# ethtool --show-ntuple enp3s0
|4 RX rings available
|Total 1 rules
|
|Filter: 63
| Flow Type: Raw Ethernet
| Src MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Dest MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Ethertype: 0x0 mask: 0xFFFF
| VLAN EtherType: 0x8100 mask: 0x0
| VLAN: 0x0 mask: 0xffff
| User-defined: 0x0 mask: 0xffffffffffffffff
| Action: Direct to queue 0
Fixes: 2b477d057e33 ("igc: Integrate flex filter into ethtool ops")
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2023-12-27 (ice, i40e)
This series contains updates to ice and i40e drivers.
Katarzyna changes message to no longer be reported as error under
certain conditions as it can be expected on ice.
Ngai-Mint ensures VSI is always closed when stopping interface to
prevent NULL pointer dereference for ice.
Arkadiusz corrects reporting of phase offset value for ice.
Sudheer corrects checking on ADQ filters to prevent invalid values on
i40e.
* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
i40e: Fix filter input checks to prevent config with invalid values
ice: dpll: fix phase offset value
ice: Shut down VSI with "link-down-on-close" enabled
ice: Fix link_down_on_close message
====================
Link: https://lore.kernel.org/r/20231227182541.3033124-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Prevent VF from configuring filters with unsupported actions or use
REDIRECT action with invalid tc number. Current checks could cause
out of bounds access on PF side.
Fixes: e284fc280473 ("i40e: Add and delete cloud filter")
Reviewed-by: Andrii Staikov <andrii.staikov@intel.com>
Signed-off-by: Sudheer Mogilappagari <sudheer.mogilappagari@intel.com>
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Bharathi Sreenivas <bharathi.sreenivas@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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Stop dividing the phase_offset value received from firmware. This fault
is present since the initial implementation.
The phase_offset value received from firmware is in 0.01ps resolution.
Dpll subsystem is using the value in 0.001ps, raw value is adjusted
before providing it to the user.
The user can observe the value of phase offset with response to
`pin-get` netlink message of dpll subsystem for an active pin:
$ ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/dpll.yaml \
--do pin-get --json '{"id":2}'
Where example of correct response would be:
{'board-label': 'C827_0-RCLKA',
'capabilities': 6,
'clock-id': 4658613174691613800,
'frequency': 1953125,
'id': 2,
'module-name': 'ice',
'parent-device': [{'direction': 'input',
'parent-id': 6,
'phase-offset': -216839550,
'prio': 9,
'state': 'connected'},
{'direction': 'input',
'parent-id': 7,
'phase-offset': -42930,
'prio': 8,
'state': 'connected'}],
'phase-adjust': 0,
'phase-adjust-max': 16723,
'phase-adjust-min': -16723,
'type': 'mux'}
Provided phase-offset value (-42930) shall be divided by the user with
DPLL_PHASE_OFFSET_DIVIDER to get actual value of -42.930 ps.
Before the fix, the response was not correct:
{'board-label': 'C827_0-RCLKA',
'capabilities': 6,
'clock-id': 4658613174691613800,
'frequency': 1953125,
'id': 2,
'module-name': 'ice',
'parent-device': [{'direction': 'input',
'parent-id': 6,
'phase-offset': -216839,
'prio': 9,
'state': 'connected'},
{'direction': 'input',
'parent-id': 7,
'phase-offset': -42,
'prio': 8,
'state': 'connected'}],
'phase-adjust': 0,
'phase-adjust-max': 16723,
'phase-adjust-min': -16723,
'type': 'mux'}
Where phase-offset value (-42), after division
(DPLL_PHASE_OFFSET_DIVIDER) would be: -0.042 ps.
Fixes: 8a3a565ff210 ("ice: add admin commands to access cgu configuration")
Fixes: 90e1c90750d7 ("ice: dpll: implement phase related callbacks")
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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Disabling netdev with ethtool private flag "link-down-on-close" enabled
can cause NULL pointer dereference bug. Shut down VSI regardless of
"link-down-on-close" state.
Fixes: 8ac7132704f3 ("ice: Fix interface being down after reset with link-down-on-close flag on")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Ngai-Mint Kwan <ngai-mint.kwan@intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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The driver should not report an error message when for a medialess port
the link_down_on_close flag is enabled and the physical link cannot be
set down.
Fixes: 8ac7132704f3 ("ice: Fix interface being down after reset with link-down-on-close flag on")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Katarzyna Wieczerzycka <katarzyna.wieczerzycka@intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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A crash was found when dumping SMC-R connections. It can be reproduced
by following steps:
- environment: two RNICs on both sides.
- run SMC-R between two sides, now a SMC_LGR_SYMMETRIC type link group
will be created.
- set the first RNIC down on either side and link group will turn to
SMC_LGR_ASYMMETRIC_LOCAL then.
- run 'smcss -R' and the crash will be triggered.
BUG: kernel NULL pointer dereference, address: 0000000000000010
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 8000000101fdd067 P4D 8000000101fdd067 PUD 10ce46067 PMD 0
Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 3 PID: 1810 Comm: smcss Kdump: loaded Tainted: G W E 6.7.0-rc6+ #51
RIP: 0010:__smc_diag_dump.constprop.0+0x36e/0x620 [smc_diag]
Call Trace:
<TASK>
? __die+0x24/0x70
? page_fault_oops+0x66/0x150
? exc_page_fault+0x69/0x140
? asm_exc_page_fault+0x26/0x30
? __smc_diag_dump.constprop.0+0x36e/0x620 [smc_diag]
smc_diag_dump_proto+0xd0/0xf0 [smc_diag]
smc_diag_dump+0x26/0x60 [smc_diag]
netlink_dump+0x19f/0x320
__netlink_dump_start+0x1dc/0x300
smc_diag_handler_dump+0x6a/0x80 [smc_diag]
? __pfx_smc_diag_dump+0x10/0x10 [smc_diag]
sock_diag_rcv_msg+0x121/0x140
? __pfx_sock_diag_rcv_msg+0x10/0x10
netlink_rcv_skb+0x5a/0x110
sock_diag_rcv+0x28/0x40
netlink_unicast+0x22a/0x330
netlink_sendmsg+0x240/0x4a0
__sock_sendmsg+0xb0/0xc0
____sys_sendmsg+0x24e/0x300
? copy_msghdr_from_user+0x62/0x80
___sys_sendmsg+0x7c/0xd0
? __do_fault+0x34/0x1a0
? do_read_fault+0x5f/0x100
? do_fault+0xb0/0x110
__sys_sendmsg+0x4d/0x80
do_syscall_64+0x45/0xf0
entry_SYSCALL_64_after_hwframe+0x6e/0x76
When the first RNIC is set down, the lgr->lnk[0] will be cleared and an
asymmetric link will be allocated in lgr->link[SMC_LINKS_PER_LGR_MAX - 1]
by smc_llc_alloc_alt_link(). Then when we try to dump SMC-R connections
in __smc_diag_dump(), the invalid lgr->lnk[0] will be accessed, resulting
in this issue. So fix it by accessing the right link.
Fixes: f16a7dd5cf27 ("smc: netlink interface for SMC sockets")
Reported-by: henaumars <henaumars@sina.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=7616
Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Link: https://lore.kernel.org/r/1703662835-53416-1-git-send-email-guwen@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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When dma_alloc_coherent() fails, we should free qdev->lrg_buf
to prevent potential memleak.
Fixes: 1357bfcf7106 ("qla3xxx: Dynamically size the rx buffer queue based on the MTU.")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Link: https://lore.kernel.org/r/20231227070227.10527-1-dinghao.liu@zju.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2023-12-26 (idpf)
This series contains updates to idpf driver only.
Alexander resolves issues in singleq mode to prevent corrupted frames
and leaking skbs.
Pavan prevents extra padding on RSS struct causing load failure due to
unexpected size.
* '200GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
idpf: avoid compiler introduced padding in virtchnl2_rss_key struct
idpf: fix corrupted frames and skb leaks in singleq mode
====================
Link: https://lore.kernel.org/r/20231226174125.2632875-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Size of the virtchnl2_rss_key struct should be 7 bytes but the
compiler introduces a padding byte for the structure alignment.
This results in idpf sending an additional byte of memory to the device
control plane than the expected buffer size. As the control plane
enforces virtchnl message size checks to validate the message,
set RSS key message fails resulting in the driver load failure.
Remove implicit compiler padding by using "__packed" structure
attribute for the virtchnl2_rss_key struct.
Also there is no need to use __DECLARE_FLEX_ARRAY macro for the
'key_flex' struct field. So drop it.
Fixes: 0d7502a9b4a7 ("virtchnl: add virtchnl version 2 ops")
Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>
Signed-off-by: Pavan Kumar Linga <pavan.kumar.linga@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Scott Register <scott.register@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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idpf_ring::skb serves only for keeping an incomplete frame between
several NAPI Rx polling cycles, as one cycle may end up before
processing the end of packet descriptor. The pointer is taken from
the ring onto the stack before entering the loop and gets written
there after the loop exits. When inside the loop, only the onstack
pointer is used.
For some reason, the logics is broken in the singleq mode, where the
pointer is taken from the ring each iteration. This means that if a
frame got fragmented into several descriptors, each fragment will have
its own skb, but only the last one will be passed up the stack
(containing garbage), leaving the rest leaked.
Then, on ifdown, rxq::skb is being freed only in the splitq mode, while
it can point to a valid skb in singleq as well. This can lead to a yet
another skb leak.
Just don't touch the ring skb field inside the polling loop, letting
the onstack skb pointer work as expected: build a new skb if it's the
first frame descriptor and attach a frag otherwise. On ifdown, free
rxq::skb unconditionally if the pointer is non-NULL.
Fixes: a5ab9ee0df0b ("idpf: add singleq start_xmit and napi poll")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Tested-by: Scott Register <scott.register@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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For rq, we have three cases getting buffers from virtio core:
1. virtqueue_get_buf{,_ctx}
2. virtqueue_detach_unused_buf
3. callback for virtqueue_resize
But in commit 295525e29a5b("virtio_net: merge dma operations when
filling mergeable buffers"), I missed the dma unmap for the #3 case.
That will leak some memory, because I did not release the pages referred
by the unused buffers.
If we do such script, we will make the system OOM.
while true
do
ethtool -G ens4 rx 128
ethtool -G ens4 rx 256
free -m
done
Fixes: 295525e29a5b ("virtio_net: merge dma operations when filling mergeable buffers")
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/20231226094333.47740-1-xuanzhuo@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Commit 86a7e0b69bd5 ("net: prevent rewrite of msg_name in
sock_sendmsg()") made sock_sendmsg save the incoming msg_name pointer
and restore it before returning, to insulate the caller against
msg_name being changed by the called code. If the address length
was also changed however, we may return with an inconsistent structure
where the length doesn't match the address, and attempts to reuse it may
lead to lost packets.
For example, a kernel that doesn't have commit 1c5950fc6fe9 ("udp6: fix
potential access to stale information") will replace a v4 mapped address
with its ipv4 equivalent, and shorten namelen accordingly from 28 to 16.
If the caller attempts to reuse the resulting msg structure, it will have
the original ipv6 (v4 mapped) address but an incorrect v4 length.
Fixes: 86a7e0b69bd5 ("net: prevent rewrite of msg_name in sock_sendmsg()")
Signed-off-by: Marc Dionne <marc.dionne@auristor.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The flag DMA_TX_APPEND_CRC was only written to the first DMA descriptor
in the TX path, where each descriptor corresponds to a single skbuff
fragment (or the skbuff head). This led to packets with no FCS appearing
on the wire if the kernel allocated the packet in fragments, which would
always happen when using PACKET_MMAP/TPACKET (cf. tpacket_fill_skb() in
net/af_packet.c).
Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file")
Signed-off-by: Adrian Cinal <adriancinal1@gmail.com>
Acked-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20231228135638.1339245-1-adriancinal1@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Matthieu Baerts says:
====================
mptcp: new reviewer and prevent a warning
Patch 1 adds MPTCP long time contributor -- Geliang Tang -- as a new
reviewer for the project. Thanks!
Patch 2 prevents a warning when TCP Diag is used to close internal MPTCP
listener subflows. This is a correction for a patch introduced in v6.4
which was fixing an issue from v5.17.
====================
Link: https://lore.kernel.org/r/20231226-upstream-net-20231226-mptcp-prevent-warn-v1-0-1404dcc431ea@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The MPTCP protocol does not expect that any other entity could change
the first subflow status when such socket is listening.
Unfortunately the TCP diag interface allows aborting any TCP socket,
including MPTCP listeners subflows. As reported by syzbot, that trigger
a WARN() and could lead to later bigger trouble.
The MPTCP protocol needs to do some MPTCP-level cleanup actions to
properly shutdown the listener. To keep the fix simple, prevent
entirely the diag interface from stopping such listeners.
We could refine the diag callback in a later, larger patch targeting
net-next.
Fixes: 57fc0f1ceaa4 ("mptcp: ensure listener is unhashed before updating the sk status")
Cc: stable@vger.kernel.org
Reported-by: <syzbot+5a01c3a666e726bc8752@syzkaller.appspotmail.com>
Closes: https://lore.kernel.org/netdev/0000000000004f4579060c68431b@google.com/
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20231226-upstream-net-20231226-mptcp-prevent-warn-v1-2-1404dcc431ea@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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For a long time now, Geliang has contributed to a lot of code and
reviews related to MPTCP. So let's reflect that in the MAINTAINERS file.
This should also encourage patch submitters to add him to the CC list.
Acked-by: Geliang Tang <geliang.tang@linux.dev>
Acked-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20231226-upstream-net-20231226-mptcp-prevent-warn-v1-1-1404dcc431ea@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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I no longer use mw@semihalf.com email. Update
mvpp2 driver entry with my alternative address.
Signed-off-by: Marcin Wojtas <marcin.s.wojtas@gmail.com>
Link: https://lore.kernel.org/r/20231225225245.1606-1-marcin.s.wojtas@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In efx_probe_filters, the channel->rps_flow_id is freed in a
efx_for_each_channel marco when success equals to 0.
However, after the following call chain:
ef100_net_open
|-> efx_probe_filters
|-> ef100_net_stop
|-> efx_remove_filters
The channel->rps_flow_id is freed again in the efx_for_each_channel of
efx_remove_filters, triggering a double-free bug.
Fixes: a9dc3d5612ce ("sfc_ef100: RX filter table management and related gubbins")
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: Zhipeng Lu <alexious@zju.edu.cn>
Link: https://lore.kernel.org/r/20231225112915.3544581-1-alexious@zju.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The commit had a bug and might not have been the right approach anyway.
Fixes: 629df6701c8a ("net: ipv6/addrconf: clamp preferred_lft to the minimum required")
Fixes: ec575f885e3e ("Documentation: networking: explain what happens if temp_prefered_lft is too small or too large")
Reported-by: Dan Moulding <dan@danm.net>
Closes: https://lore.kernel.org/netdev/20231221231115.12402-1-dan@danm.net/
Link: https://lore.kernel.org/netdev/CAMMLpeTdYhd=7hhPi2Y7pwdPCgnnW5JYh-bu3hSc7im39uxnEA@mail.gmail.com/
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20231230043252.10530-1-alexhenrie24@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Similar to commit be809424659c ("selftests: bonding: do not set port down
before adding to bond"). The bond-arp-interval-causes-panic test failed
after commit a4abfa627c38 ("net: rtnetlink: Enslave device before bringing
it up") as the kernel will set the port down _after_ adding to bond if setting
port down specifically.
Fix it by removing the link down operation when adding to bond.
Fixes: 2ffd57327ff1 ("selftests: bonding: cause oops in bond_rr_gen_slave_id")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Tested-by: Benjamin Poirier <benjamin.poirier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When we register a cn_proc listening event, the proc_event_num_listener
variable will be incremented by one, but if PROC_CN_MCAST_IGNORE is
not called, the count will not decrease.
This will cause the proc_*_connector function to take the wrong path.
It will reappear when the forkstat tool exits via ctrl + c.
We solve this problem by determining whether
there are still listeners to clear proc_event_num_listener.
Signed-off-by: wangkeqi <wangkeqiwang@didiglobal.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove the @phy_timer: line to prevent the kernel-doc warning:
include/linux/phy.h:768: warning: Excess struct member 'phy_timer' description in 'phy_device'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: netdev@vger.kernel.org
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 9718475e6908 ("socket: Add SO_TIMESTAMPING_NEW") added the new
socket option SO_TIMESTAMPING_NEW. Setting the option is handled in
sk_setsockopt(), querying it was not handled in sk_getsockopt(), though.
Following remarks on an earlier submission of this patch, keep the old
behavior of getsockopt(SO_TIMESTAMPING_OLD) which returns the active
flags even if they actually have been set through SO_TIMESTAMPING_NEW.
The new getsockopt(SO_TIMESTAMPING_NEW) is stricter, returning flags
only if they have been set through the same option.
Fixes: 9718475e6908 ("socket: Add SO_TIMESTAMPING_NEW")
Link: https://lore.kernel.org/lkml/20230703175048.151683-1-jthinz@mailbox.tu-berlin.de/
Link: https://lore.kernel.org/netdev/0d7cddc9-03fa-43db-a579-14f3e822615b@app.fastmail.com/
Signed-off-by: Jörn-Thorben Hinz <jthinz@mailbox.tu-berlin.de>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When a 'DEL_CLIENT' message is received from the remote, the corresponding
server port gets deleted. A DEL_SERVER message is then announced for this
server. As part of handling the subsequent DEL_SERVER message, the name-
server attempts to delete the server port which results in a '-ENOENT' error.
The return value from server_del() is then propagated back to qrtr_ns_worker,
causing excessive error prints.
To address this, return 0 from control_cmd_del_server() without checking the
return value of server_del(), since the above scenario is not an error case
and hence server_del() doesn't have any other error return value.
Signed-off-by: Sarannya Sasikumar <quic_sarannya@quicinc.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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I am stepping down as TJA11XX C45 maintainer.
Andrei Botila will take the responsibility to maintain and improve the
support for TJA11XX C45 PHYs.
Signed-off-by: Radu Pirea (NXP OSS) <radu-nicolae.pirea@oss.nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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