commit 99537d5c47 upstream.
In the non-RT kernel, local_bh_disable() merely disables preemption,
whereas it maps to an actual spin lock in the RT kernel. Consequently,
when attempting to refill RX buffers via netdev_alloc_skb() in
macb_mac_link_up(), a deadlock scenario arises as follows:
WARNING: possible circular locking dependency detected
6.18.0-08691-g2061f18ad76e #39 Not tainted
------------------------------------------------------
kworker/0:0/8 is trying to acquire lock:
ffff00080369bbe0 (&bp->lock){+.+.}-{3:3}, at: macb_start_xmit+0x808/0xb7c
but task is already holding lock:
ffff000803698e58 (&queue->tx_ptr_lock){+...}-{3:3}, at: macb_start_xmit
+0x148/0xb7c
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&queue->tx_ptr_lock){+...}-{3:3}:
rt_spin_lock+0x50/0x1f0
macb_start_xmit+0x148/0xb7c
dev_hard_start_xmit+0x94/0x284
sch_direct_xmit+0x8c/0x37c
__dev_queue_xmit+0x708/0x1120
neigh_resolve_output+0x148/0x28c
ip6_finish_output2+0x2c0/0xb2c
__ip6_finish_output+0x114/0x308
ip6_output+0xc4/0x4a4
mld_sendpack+0x220/0x68c
mld_ifc_work+0x2a8/0x4f4
process_one_work+0x20c/0x5f8
worker_thread+0x1b0/0x35c
kthread+0x144/0x200
ret_from_fork+0x10/0x20
-> #2 (_xmit_ETHER#2){+...}-{3:3}:
rt_spin_lock+0x50/0x1f0
sch_direct_xmit+0x11c/0x37c
__dev_queue_xmit+0x708/0x1120
neigh_resolve_output+0x148/0x28c
ip6_finish_output2+0x2c0/0xb2c
__ip6_finish_output+0x114/0x308
ip6_output+0xc4/0x4a4
mld_sendpack+0x220/0x68c
mld_ifc_work+0x2a8/0x4f4
process_one_work+0x20c/0x5f8
worker_thread+0x1b0/0x35c
kthread+0x144/0x200
ret_from_fork+0x10/0x20
-> #1 ((softirq_ctrl.lock)){+.+.}-{3:3}:
lock_release+0x250/0x348
__local_bh_enable_ip+0x7c/0x240
__netdev_alloc_skb+0x1b4/0x1d8
gem_rx_refill+0xdc/0x240
gem_init_rings+0xb4/0x108
macb_mac_link_up+0x9c/0x2b4
phylink_resolve+0x170/0x614
process_one_work+0x20c/0x5f8
worker_thread+0x1b0/0x35c
kthread+0x144/0x200
ret_from_fork+0x10/0x20
-> #0 (&bp->lock){+.+.}-{3:3}:
__lock_acquire+0x15a8/0x2084
lock_acquire+0x1cc/0x350
rt_spin_lock+0x50/0x1f0
macb_start_xmit+0x808/0xb7c
dev_hard_start_xmit+0x94/0x284
sch_direct_xmit+0x8c/0x37c
__dev_queue_xmit+0x708/0x1120
neigh_resolve_output+0x148/0x28c
ip6_finish_output2+0x2c0/0xb2c
__ip6_finish_output+0x114/0x308
ip6_output+0xc4/0x4a4
mld_sendpack+0x220/0x68c
mld_ifc_work+0x2a8/0x4f4
process_one_work+0x20c/0x5f8
worker_thread+0x1b0/0x35c
kthread+0x144/0x200
ret_from_fork+0x10/0x20
other info that might help us debug this:
Chain exists of:
&bp->lock --> _xmit_ETHER#2 --> &queue->tx_ptr_lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&queue->tx_ptr_lock);
lock(_xmit_ETHER#2);
lock(&queue->tx_ptr_lock);
lock(&bp->lock);
*** DEADLOCK ***
Call trace:
show_stack+0x18/0x24 (C)
dump_stack_lvl+0xa0/0xf0
dump_stack+0x18/0x24
print_circular_bug+0x28c/0x370
check_noncircular+0x198/0x1ac
__lock_acquire+0x15a8/0x2084
lock_acquire+0x1cc/0x350
rt_spin_lock+0x50/0x1f0
macb_start_xmit+0x808/0xb7c
dev_hard_start_xmit+0x94/0x284
sch_direct_xmit+0x8c/0x37c
__dev_queue_xmit+0x708/0x1120
neigh_resolve_output+0x148/0x28c
ip6_finish_output2+0x2c0/0xb2c
__ip6_finish_output+0x114/0x308
ip6_output+0xc4/0x4a4
mld_sendpack+0x220/0x68c
mld_ifc_work+0x2a8/0x4f4
process_one_work+0x20c/0x5f8
worker_thread+0x1b0/0x35c
kthread+0x144/0x200
ret_from_fork+0x10/0x20
Notably, invoking the mog_init_rings() callback upon link establishment
is unnecessary. Instead, we can exclusively call mog_init_rings() within
the ndo_open() callback. This adjustment resolves the deadlock issue.
Furthermore, since MACB_CAPS_MACB_IS_EMAC cases do not use mog_init_rings()
when opening the network interface via at91ether_open(), moving
mog_init_rings() to macb_open() also eliminates the MACB_CAPS_MACB_IS_EMAC
check.
Fixes: 633e98a711 ("net: macb: use resolved link config in mac_link_up()")
Cc: stable@vger.kernel.org
Suggested-by: Kevin Hao <kexin.hao@windriver.com>
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Link: https://patch.msgid.link/20251222015624.1994551-1-xiaolei.wang@windriver.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 3d970eda00 upstream.
Currently, interrupts are automatically enabled immediately upon
request. This allows interrupt to fire before the associated NAPI
context is fully initialized and cause failures like below:
[ 0.946369] Call Trace:
[ 0.946369] <IRQ>
[ 0.946369] __napi_poll+0x2a/0x1e0
[ 0.946369] net_rx_action+0x2f9/0x3f0
[ 0.946369] handle_softirqs+0xd6/0x2c0
[ 0.946369] ? handle_edge_irq+0xc1/0x1b0
[ 0.946369] __irq_exit_rcu+0xc3/0xe0
[ 0.946369] common_interrupt+0x81/0xa0
[ 0.946369] </IRQ>
[ 0.946369] <TASK>
[ 0.946369] asm_common_interrupt+0x22/0x40
[ 0.946369] RIP: 0010:pv_native_safe_halt+0xb/0x10
Use the `IRQF_NO_AUTOEN` flag when requesting interrupts to prevent auto
enablement and explicitly enable the interrupt in NAPI initialization
path (and disable it during NAPI teardown).
This ensures that interrupt lifecycle is strictly coupled with
readiness of NAPI context.
Cc: stable@vger.kernel.org
Fixes: 1dfc2e4611 ("gve: Refactor napi add and remove functions")
Signed-off-by: Ankit Garg <nktgrg@google.com>
Reviewed-by: Jordan Rhee <jordanrhee@google.com>
Reviewed-by: Joshua Washington <joshwash@google.com>
Signed-off-by: Harshitha Ramamurthy <hramamurthy@google.com>
Link: https://patch.msgid.link/20251219102945.2193617-1-hramamurthy@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 9c72a5182e upstream.
In e1000_tbi_should_accept() we read the last byte of the frame via
'data[length - 1]' to evaluate the TBI workaround. If the descriptor-
reported length is zero or larger than the actual RX buffer size, this
read goes out of bounds and can hit unrelated slab objects. The issue
is observed from the NAPI receive path (e1000_clean_rx_irq):
==================================================================
BUG: KASAN: slab-out-of-bounds in e1000_tbi_should_accept+0x610/0x790
Read of size 1 at addr ffff888014114e54 by task sshd/363
CPU: 0 PID: 363 Comm: sshd Not tainted 5.18.0-rc1 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
Call Trace:
<IRQ>
dump_stack_lvl+0x5a/0x74
print_address_description+0x7b/0x440
print_report+0x101/0x200
kasan_report+0xc1/0xf0
e1000_tbi_should_accept+0x610/0x790
e1000_clean_rx_irq+0xa8c/0x1110
e1000_clean+0xde2/0x3c10
__napi_poll+0x98/0x380
net_rx_action+0x491/0xa20
__do_softirq+0x2c9/0x61d
do_softirq+0xd1/0x120
</IRQ>
<TASK>
__local_bh_enable_ip+0xfe/0x130
ip_finish_output2+0x7d5/0xb00
__ip_queue_xmit+0xe24/0x1ab0
__tcp_transmit_skb+0x1bcb/0x3340
tcp_write_xmit+0x175d/0x6bd0
__tcp_push_pending_frames+0x7b/0x280
tcp_sendmsg_locked+0x2e4f/0x32d0
tcp_sendmsg+0x24/0x40
sock_write_iter+0x322/0x430
vfs_write+0x56c/0xa60
ksys_write+0xd1/0x190
do_syscall_64+0x43/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f511b476b10
Code: 73 01 c3 48 8b 0d 88 d3 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d f9 2b 2c 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 8e 9b 01 00 48 89 04 24
RSP: 002b:00007ffc9211d4e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000004024 RCX: 00007f511b476b10
RDX: 0000000000004024 RSI: 0000559a9385962c RDI: 0000000000000003
RBP: 0000559a9383a400 R08: fffffffffffffff0 R09: 0000000000004f00
R10: 0000000000000070 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc9211d57f R14: 0000559a9347bde7 R15: 0000000000000003
</TASK>
Allocated by task 1:
__kasan_krealloc+0x131/0x1c0
krealloc+0x90/0xc0
add_sysfs_param+0xcb/0x8a0
kernel_add_sysfs_param+0x81/0xd4
param_sysfs_builtin+0x138/0x1a6
param_sysfs_init+0x57/0x5b
do_one_initcall+0x104/0x250
do_initcall_level+0x102/0x132
do_initcalls+0x46/0x74
kernel_init_freeable+0x28f/0x393
kernel_init+0x14/0x1a0
ret_from_fork+0x22/0x30
The buggy address belongs to the object at ffff888014114000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1620 bytes to the right of
2048-byte region [ffff888014114000, ffff888014114800]
The buggy address belongs to the physical page:
page:ffffea0000504400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14110
head:ffffea0000504400 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x100000000010200(slab|head|node=0|zone=1)
raw: 0100000000010200 0000000000000000 dead000000000001 ffff888013442000
raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
==================================================================
This happens because the TBI check unconditionally dereferences the last
byte without validating the reported length first:
u8 last_byte = *(data + length - 1);
Fix by rejecting the frame early if the length is zero, or if it exceeds
adapter->rx_buffer_len. This preserves the TBI workaround semantics for
valid frames and prevents touching memory beyond the RX buffer.
Fixes: 2037110c96 ("e1000: move tbi workaround code into helper function")
Cc: stable@vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit a48e232210 ]
There is a crash issue when running zero copy XDP_TX action, the crash
log is shown below.
[ 216.122464] Unable to handle kernel paging request at virtual address fffeffff80000000
[ 216.187524] Internal error: Oops: 0000000096000144 [#1] SMP
[ 216.301694] Call trace:
[ 216.304130] dcache_clean_poc+0x20/0x38 (P)
[ 216.308308] __dma_sync_single_for_device+0x1bc/0x1e0
[ 216.313351] stmmac_xdp_xmit_xdpf+0x354/0x400
[ 216.317701] __stmmac_xdp_run_prog+0x164/0x368
[ 216.322139] stmmac_napi_poll_rxtx+0xba8/0xf00
[ 216.326576] __napi_poll+0x40/0x218
[ 216.408054] Kernel panic - not syncing: Oops: Fatal exception in interrupt
For XDP_TX action, the xdp_buff is converted to xdp_frame by
xdp_convert_buff_to_frame(). The memory type of the resulting xdp_frame
depends on the memory type of the xdp_buff. For page pool based xdp_buff
it produces xdp_frame with memory type MEM_TYPE_PAGE_POOL. For zero copy
XSK pool based xdp_buff it produces xdp_frame with memory type
MEM_TYPE_PAGE_ORDER0. However, stmmac_xdp_xmit_back() does not check the
memory type and always uses the page pool type, this leads to invalid
mappings and causes the crash. Therefore, check the xdp_buff memory type
in stmmac_xdp_xmit_back() to fix this issue.
Fixes: bba2556efa ("net: stmmac: Enable RX via AF_XDP zero-copy")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Reviewed-by: Hariprasad Kelam <hkelam@marvell.com>
Link: https://patch.msgid.link/20251204071332.1907111-1-wei.fang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 85f4b0c650 ]
This patch ensures that the RX ring size (rx_pending) is not
set below the permitted length. This avoids UBSAN
shift-out-of-bounds errors when users passes small or zero
ring sizes via ethtool -G.
Fixes: d45d897984 ("octeontx2-pf: Add basic ethtool support")
Signed-off-by: Anshumali Gaur <agaur@marvell.com>
Link: https://patch.msgid.link/20251219062226.524844-1-agaur@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit b94f11af9d ]
The LIBWX library code is what calls into phylink, so any user of
it has to select CONFIG_PHYLINK at the moment, with NGBEVF missing this:
x86_64-linux-ld: drivers/net/ethernet/wangxun/libwx/wx_ethtool.o: in function `wx_nway_reset':
wx_ethtool.c:(.text+0x613): undefined reference to `phylink_ethtool_nway_reset'
x86_64-linux-ld: drivers/net/ethernet/wangxun/libwx/wx_ethtool.o: in function `wx_get_link_ksettings':
wx_ethtool.c:(.text+0x62b): undefined reference to `phylink_ethtool_ksettings_get'
x86_64-linux-ld: drivers/net/ethernet/wangxun/libwx/wx_ethtool.o: in function `wx_set_link_ksettings':
wx_ethtool.c:(.text+0x643): undefined reference to `phylink_ethtool_ksettings_set'
x86_64-linux-ld: drivers/net/ethernet/wangxun/libwx/wx_ethtool.o: in function `wx_get_pauseparam':
wx_ethtool.c:(.text+0x65b): undefined reference to `phylink_ethtool_get_pauseparam'
x86_64-linux-ld: drivers/net/ethernet/wangxun/libwx/wx_ethtool.o: in function `wx_set_pauseparam':
wx_ethtool.c:(.text+0x677): undefined reference to `phylink_ethtool_set_pauseparam'
Add the 'select PHYLINK' line in the libwx option directly so this will
always be enabled for all current and future wangxun drivers, and remove
the now duplicate lines.
Fixes: a0008a3658 ("net: wangxun: add ngbevf build")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20251216213547.115026-1-arnd@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit df60c332ca ]
During the stress tests, early RX adaptation handshakes can fail, such
as missing the RX_ADAPT ACK or not receiving a coefficient update before
block lock is established. Continuing to retry RX adaptation in this
state is often ineffective if the current mode selection is not viable.
Resetting the RX adaptation retry counter when an RX_ADAPT request fails
to receive ACK or a coefficient update prior to block lock, and clearing
mode_set so the next bring-up performs a fresh mode selection rather
than looping on a likely invalid configuration.
Fixes: 4f3b20bfbb ("amd-xgbe: add support for rx-adaptation")
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://patch.msgid.link/20251215151728.311713-1-Raju.Rangoju@amd.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 5e7365b5a1 ]
Since airoha_probe() is not executed under rtnl lock, there is small race
where a given device is configured by user-space while the remaining ones
are not completely loaded from the dts yet. This condition will allow a
hw device misconfiguration since there are some conditions (e.g. GDM2 check
in airoha_dev_init()) that require all device are properly loaded from the
device tree. Fix the issue moving net_devices registration at the end of
the airoha_probe routine.
Fixes: 9cd451d414 ("net: airoha: Add loopback support for GDM2")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251214-airoha-fix-dev-registration-v1-1-860e027ad4c6@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit b3d6bbae1d ]
During the IDPF init phase, the mailbox runs in poll mode until it is
configured to properly handle interrupts. The previous delay of 300ms is
excessively long for the mailbox polling mechanism, which causes a slow
initialization of ~2s:
echo 0000:06:12.4 > /sys/bus/pci/drivers/idpf/bind
[ 52.444239] idpf 0000:06:12.4: enabling device (0000 -> 0002)
[ 52.485005] idpf 0000:06:12.4: Device HW Reset initiated
[ 54.177181] idpf 0000:06:12.4: PTP init failed, err=-EOPNOTSUPP
[ 54.206177] idpf 0000:06:12.4: Minimum RX descriptor support not provided, using the default
[ 54.206182] idpf 0000:06:12.4: Minimum TX descriptor support not provided, using the default
Changing the delay to 300us avoids the delays during the initial mailbox
transactions, making the init phase much faster:
[ 83.342590] idpf 0000:06:12.4: enabling device (0000 -> 0002)
[ 83.384402] idpf 0000:06:12.4: Device HW Reset initiated
[ 83.518323] idpf 0000:06:12.4: PTP init failed, err=-EOPNOTSUPP
[ 83.547430] idpf 0000:06:12.4: Minimum RX descriptor support not provided, using the default
[ 83.547435] idpf 0000:06:12.4: Minimum TX descriptor support not provided, using the default
Fixes: 4930fbf419 ("idpf: add core init and interrupt request")
Signed-off-by: Brian Vazquez <brianvv@google.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Samuel Salin <Samuel.salin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 4af1f9a472 ]
IPU SDK versions 1.9 through 2.0.5 require send buffer to contain a single
empty memory region. Set number of regions to 1 and use appropriate send
buffer size to satisfy this requirement.
Fixes: 6aa53e861c ("idpf: implement get LAN MMIO memory regions")
Suggested-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 6daa2893f3 ]
There are off-by-one bugs when configuring RSS hash key and lookup
table, causing out-of-bounds reads to memory [1] and out-of-bounds
writes to device registers.
Before commit 43a3d9ba34 ("i40evf: Allow PF driver to configure RSS"),
the loop upper bounds were:
i <= I40E_VFQF_{HKEY,HLUT}_MAX_INDEX
which is safe since the value is the last valid index.
That commit changed the bounds to:
i <= adapter->rss_{key,lut}_size / 4
where `rss_{key,lut}_size / 4` is the number of dwords, so the last
valid index is `(rss_{key,lut}_size / 4) - 1`. Therefore, using `<=`
accesses one element past the end.
Fix the issues by using `<` instead of `<=`, ensuring we do not exceed
the bounds.
[1] KASAN splat about rss_key_size off-by-one
BUG: KASAN: slab-out-of-bounds in iavf_config_rss+0x619/0x800
Read of size 4 at addr ffff888102c50134 by task kworker/u8:6/63
CPU: 0 UID: 0 PID: 63 Comm: kworker/u8:6 Not tainted 6.18.0-rc2-enjuk-tnguy-00378-g3005f5b77652-dirty #156 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: iavf iavf_watchdog_task
Call Trace:
<TASK>
dump_stack_lvl+0x6f/0xb0
print_report+0x170/0x4f3
kasan_report+0xe1/0x1a0
iavf_config_rss+0x619/0x800
iavf_watchdog_task+0x2be7/0x3230
process_one_work+0x7fd/0x1420
worker_thread+0x4d1/0xd40
kthread+0x344/0x660
ret_from_fork+0x249/0x320
ret_from_fork_asm+0x1a/0x30
</TASK>
Allocated by task 63:
kasan_save_stack+0x30/0x50
kasan_save_track+0x14/0x30
__kasan_kmalloc+0x7f/0x90
__kmalloc_noprof+0x246/0x6f0
iavf_watchdog_task+0x28fc/0x3230
process_one_work+0x7fd/0x1420
worker_thread+0x4d1/0xd40
kthread+0x344/0x660
ret_from_fork+0x249/0x320
ret_from_fork_asm+0x1a/0x30
The buggy address belongs to the object at ffff888102c50100
which belongs to the cache kmalloc-64 of size 64
The buggy address is located 0 bytes to the right of
allocated 52-byte region [ffff888102c50100, ffff888102c50134)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c50
flags: 0x200000000000000(node=0|zone=2)
page_type: f5(slab)
raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888102c50000: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc
ffff888102c50080: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc
>ffff888102c50100: 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc fc
^
ffff888102c50180: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
ffff888102c50200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
Fixes: 43a3d9ba34 ("i40evf: Allow PF driver to configure RSS")
Signed-off-by: Kohei Enju <enjuk@amazon.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 6994283421 ]
The maximum number of descriptors supported by the hardware is
hardware-dependent and can be retrieved using
i40e_get_max_num_descriptors(). Move this function to a shared header
and use it when checking for valid ring_len parameter rather than using
hardcoded value.
By fixing an over-acceptance issue, behavior change could be seen where
ring_len could now be rejected while configuring rx and tx queues if its
size is larger than the hardware-dependent maximum number of
descriptors.
Fixes: 55d225670d ("i40e: add validation for ring_len param")
Signed-off-by: Gregory Herrero <gregory.herrero@oracle.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit be43abc551 ]
Add service task schedule to set_rx_mode.
In some cases there are error messages printed out in PTP application
(ptp4l):
ptp4l[13848.762]: port 1 (ens2f3np3): received SYNC without timestamp
ptp4l[13848.825]: port 1 (ens2f3np3): received SYNC without timestamp
ptp4l[13848.887]: port 1 (ens2f3np3): received SYNC without timestamp
This happens when service task would not run immediately after
set_rx_mode, and we need it for setup tasks. This service task checks, if
PTP RX packets are hung in firmware, and propagate correct settings such
as multicast address for IEEE 1588 Precision Time Protocol.
RX timestamping depends on some of these filters set. Bug happens only
with high PTP packets frequency incoming, and not every run since
sometimes service task is being ran from a different place immediately
after starting ptp4l.
Fixes: 0e4425ed64 ("i40e: fix: do not sleep in netdev_ops")
Reviewed-by: Grzegorz Nitka <grzegorz.nitka@intel.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Przemyslaw Korba <przemyslaw.korba@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit dd75c723ef upstream.
Wake-on-Lan does currently not work for r8169 in DASH mode, e.g. the
ASUS Pro WS X570-ACE with RTL8168fp/RTL8117.
Fix by not returning early in rtl_prepare_power_down when dash_enabled.
While this fixes WoL, it still kills the OOB RTL8117 remote management
BMC connection. Fix by not calling rtl8168_driver_stop if WoL is enabled.
Fixes: 065c27c184 ("r8169: phy power ops")
Signed-off-by: René Rebe <rene@exactco.de>
Cc: stable@vger.kernel.org
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/20251202.194137.1647877804487085954.rene@exactco.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 6ef935e659 ]
Currently, the VLAN id may be used without validation when
receive a VLAN configuration mailbox from VF. The length of
vlan_del_fail_bmap is BITS_TO_LONGS(VLAN_N_VID). It may cause
out-of-bounds memory access once the VLAN id is bigger than
or equal to VLAN_N_VID.
Therefore, VLAN id needs to be checked to ensure it is within
the range of VLAN_N_VID.
Fixes: fe4144d47e ("net: hns3: sync VLAN filter entries when kill VLAN ID failed")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251211023737.2327018-4-shaojijie@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit d180c11aa8 ]
Currently, rss_size = num_tqps / tc_num. If tc_num is 1, then num_tqps
equals rss_size. However, if the tc_num is greater than 1, then rss_size
will be less than num_tqps, causing the tqp_index check for subsequent TCs
using rss_size to always fail.
This patch uses the num_tqps to check whether tqp_index is out of range,
instead of rss_size.
Fixes: 326334aad0 ("net: hns3: add a check for tqp_index in hclge_get_ring_chain_from_mbx()")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251211023737.2327018-3-shaojijie@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit c2a1626974 ]
Currently, hdev->htqp is allocated using hdev->num_tqps, and kinfo->tqp
is allocated using kinfo->num_tqps. However, kinfo->num_tqps is set to
min(new_tqps, hdev->num_tqps); Therefore, kinfo->num_tqps may be smaller
than hdev->num_tqps, which causes some hdev->htqp[i] to remain
uninitialized in hclgevf_knic_setup().
Thus, this patch allocates hdev->htqp and kinfo->tqp using hdev->num_tqps,
ensuring that the lengths of hdev->htqp and kinfo->tqp are consistent
and that all elements are properly initialized.
Fixes: e2cb1dec97 ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251211023737.2327018-2-shaojijie@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 2939203ffe ]
In the current implementation, the enetc_xdp_xmit() always transmits
redirected XDP frames even if the link is down, but the frames cannot
be transmitted from TX BD rings when the link is down, so the frames
are still kept in the TX BD rings. If the XDP program is uninstalled,
users will see the following warning logs.
fsl_enetc 0000:00:00.0 eno0: timeout for tx ring #6 clear
More worse, the TX BD ring cannot work properly anymore, because the
HW PIR and CIR are not equal after the re-initialization of the TX
BD ring. At this point, the BDs between CIR and PIR are invalid,
which will cause a hardware malfunction.
Another reason is that there is internal context in the ring prefetch
logic that will retain the state from the first incarnation of the ring
and continue prefetching from the stale location when we re-initialize
the ring. The internal context is only reset by an FLR. That is to say,
for LS1028A ENETC, software cannot set the HW CIR and PIR when
initializing the TX BD ring.
It does not make sense to transmit redirected XDP frames when the link is
down. Add a link status check to prevent transmission in this condition.
This fixes part of the issue, but more complex cases remain. For example,
the TX BD ring may still contain unsent frames when the link goes down.
Those situations require additional patches, which will build on this
one.
Fixes: 9d2b68cc10 ("net: enetc: add support for XDP_REDIRECT")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/20251211020919.121113-1-wei.fang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 4198a14c8c ]
Commit [1] added the 40 bytes required by the PSP header+trailer and the
UDP header to MLX5E_ETH_HARD_MTU, which limits the device-wide max
software MTU that could be set. This is not okay, because most packets
are not PSP packets and it doesn't make sense to always reserve space
for headers which won't get added in most cases.
As it turns out, for TCP connections, PSP overhead is already taken into
account in the TCP MSS calculations via inet_csk(sk)->icsk_ext_hdr_len.
This was added in commit [2]. This means that the extra space reserved
in the hard MTU for mlx5 ends up unused and wasted.
Remove the unnecessary 40 byte reservation from hard MTU.
[1] commit e5a1861a29 ("net/mlx5e: Implement PSP Tx data path")
[2] commit e97269257f ("net: psp: update the TCP MSS to reflect PSP
packet overhead")
Fixes: e5a1861a29 ("net/mlx5e: Implement PSP Tx data path")
Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Shahar Shitrit <shshitrit@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1765284977-1363052-10-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 9ab89bde13 ]
When initializing the MAC addresses for an outbound IPsec packet offload
rule in mlx5e_ipsec_init_macs, the call to dst_neigh_lookup is used to
find the next-hop neighbor (typically the gateway in tunnel mode).
This call might create a new neighbor entry if one doesn't already
exist. This newly created entry starts in the INCOMPLETE state, as the
kernel hasn't yet sent an ARP or NDISC probe to resolve the MAC
address. In this case, neigh_ha_snapshot will correctly return an
all-zero MAC address.
IPsec packet offload requires the actual next-hop MAC address to
program the rule correctly. If the neighbor state is INCOMPLETE when
the rule is created, the hardware rule is programmed with an all-zero
destination MAC address. Packets sent using this rule will be
subsequently dropped by the receiving network infrastructure or host.
This patch adds a check specifically for the outbound offload path. If
neigh_ha_snapshot returns an all-zero MAC address, it proactively
calls neigh_event_send(n, NULL). This ensures the kernel immediately
sends the initial ARP or NDISC probe if one isn't already pending,
accelerating the resolution process. This helps prevent the hardware
rule from being programmed with an invalid MAC address and avoids
packet drops due to unresolved neighbors.
Fixes: 71670f766b ("net/mlx5e: Support routed networks during IPsec MACs initialization")
Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1765284977-1363052-8-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit e35d7da8dd ]
Replace ipv6_stub->ipv6_dst_lookup_flow() with ip6_dst_lookup() in
mlx5e_ipsec_init_macs() since IPsec transformations are not needed
during Security Association setup - only basic routing information is
required for nexthop MAC address resolution.
This resolves an issue where XfrmOutNoStates error counter would be
incremented when xfrm policy is configured before xfrm state, as the
IPsec-aware routing function would attempt policy checks during SA
initialization.
Fixes: 71670f766b ("net/mlx5e: Support routed networks during IPsec MACs initialization")
Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1765284977-1363052-7-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 367e501f8b ]
The firmware reset mechanism can be triggered by asynchronous events,
which may race with other devlink operations like devlink reload or
devlink dev eswitch set, potentially leading to inconsistent states.
This patch addresses the race by using the devl_lock to serialize the
firmware reset against other devlink operations. When a reset is
requested, the driver attempts to acquire the lock. If successful, it
sets a flag to block devlink reload or eswitch changes, ACKs the reset
to firmware and then releases the lock. If the lock is already held by
another operation, the driver NACKs the firmware reset request,
indicating that the reset cannot proceed.
Firmware reset does not keep the devl_lock and instead uses an internal
firmware reset bit. This is because firmware resets can be triggered by
asynchronous events, and processed in different threads. It is illegal
and unsafe to acquire a lock in one thread and attempt to release it in
another, as lock ownership is intrinsically thread-specific.
This change ensures that firmware resets and other devlink operations
are mutually exclusive during the critical reset request phase,
preventing race conditions.
Fixes: 38b9f903f2 ("net/mlx5: Handle sync reset request event")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mateusz Berezecki <mberezecki@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1765284977-1363052-6-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit c0289f67f7 ]
The firmware tracer's format string validation and parameter counting
did not properly handle escaped percent signs (%%). This caused
fw_tracer to count more parameters when trace format strings contained
literal percent characters.
To fix it, allow %% to pass string validation and skip %% sequences when
counting parameters since they represent literal percent signs rather
than format specifiers.
Fixes: 70dd6fdb89 ("net/mlx5: FW tracer, parse traces and kernel tracing support")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reported-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Closes: https://lore.kernel.org/netdev/hanz6rzrb2bqbplryjrakvkbmv4y5jlmtthnvi3thg5slqvelp@t3s3erottr6s/
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1765284977-1363052-5-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit b35966042d ]
Add validation for format string parameters in the firmware tracer to
prevent potential security vulnerabilities and crashes from malformed
format strings received from firmware.
The firmware tracer receives format strings from the device firmware and
uses them to format trace messages. Without proper validation, bad
firmware could provide format strings with invalid format specifiers
(e.g., %s, %p, %n) that could lead to crashes, or other undefined
behavior.
Add mlx5_tracer_validate_params() to validate that all format specifiers
in trace strings are limited to safe integer/hex formats (%x, %d, %i,
%u, %llx, %lx, etc.). Reject strings containing other format types that
could be used to access arbitrary memory or cause crashes.
Invalid format strings are added to the trace output for visibility with
"BAD_FORMAT: " prefix.
Fixes: 70dd6fdb89 ("net/mlx5: FW tracer, parse traces and kernel tracing support")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reported-by: Breno Leitao <leitao@debian.org>
Closes: https://lore.kernel.org/netdev/hanz6rzrb2bqbplryjrakvkbmv4y5jlmtthnvi3thg5slqvelp@t3s3erottr6s/
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1765284977-1363052-4-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 89a898d63f ]
drain_fw_reset() waits for ongoing firmware reset events and blocks new
event handling, but does not clear the reset requested flag, and may
keep sync reset polling.
To fix it, call mlx5_sync_reset_clear_reset_requested() to clear the
flag, stop sync reset polling, and resume health polling, ensuring
health issues are still detected after the firmware reset drain.
Fixes: 16d42d3133 ("net/mlx5: Drain fw_reset when removing device")
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drori <shayd@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1765284977-1363052-2-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 50b3db3e11 ]
On execution path with raised B44_FLAG_EXTERNAL_PHY, b44_readphy()
leaves bmcr value uninitialized and it is used later in the code.
Add check of this flag at the beginning of the b44_nway_reset() and
exit early of the function with restarting autonegotiation if an
external PHY is used.
Fixes: 753f492093 ("[B44]: port to native ssb support")
Reviewed-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexey Simakov <bigalex934@gmail.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20251205155815.4348-1-bigalex934@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 9e7477a427 ]
The new icssg-prueth driver needs the same dependency as the other parts
that use the ptp-1588:
WARNING: unmet direct dependencies detected for TI_ICSS_IEP
Depends on [m]: NETDEVICES [=y] && ETHERNET [=y] && NET_VENDOR_TI [=y] && PTP_1588_CLOCK_OPTIONAL [=m] && TI_PRUSS [=y]
Selected by [y]:
- TI_PRUETH [=y] && NETDEVICES [=y] && ETHERNET [=y] && NET_VENDOR_TI [=y] && PRU_REMOTEPROC [=y] && NET_SWITCHDEV [=y]
Add the correct dependency on the two drivers missing it, and remove
the pointless 'imply' in the process.
Fixes: e654b85a69 ("net: ti: icssg-prueth: Add ICSSG Ethernet driver for AM65x SR1.0 platforms")
Fixes: 511f6c1ae0 ("net: ti: icssm-prueth: Adds ICSSM Ethernet driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20251204100138.1034175-1-arnd@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 0373d5c387 ]
For XDP_TX action in bnxt_rx_xdp(), clearing of the event flags is not
correct. __bnxt_poll_work() -> bnxt_rx_pkt() -> bnxt_rx_xdp() may be
looping within NAPI and some event flags may be set in earlier
iterations. In particular, if BNXT_TX_EVENT is set earlier indicating
some XDP_TX packets are ready and pending, it will be cleared if it is
XDP_TX action again. Normally, we will set BNXT_TX_EVENT again when we
successfully call __bnxt_xmit_xdp(). But if the TX ring has no more
room, the flag will not be set. This will cause the TX producer to be
ahead but the driver will not hit the TX doorbell.
For multi-buf XDP_TX, there is no need to clear the event flags and set
BNXT_AGG_EVENT. The BNXT_AGG_EVENT flag should have been set earlier in
bnxt_rx_pkt().
The visible symptom of this is that the RX ring associated with the
TX XDP ring will eventually become empty and all packets will be dropped.
Because this condition will cause the driver to not refill the RX ring
seeing that the TX ring has forever pending XDP_TX packets.
The fix is to only clear BNXT_RX_EVENT when we have successfully
called __bnxt_xmit_xdp().
Fixes: 7f0a168b04 ("bnxt_en: Add completion ring pointer in TX and RX ring structures")
Reported-by: Pavel Dubovitsky <pdubovitsky@meta.com>
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251203003024.2246699-1-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 8ac1dacec4 ]
Cited commit added a dedicated mutex (instead of RTNL) to protect the
multicast route list, so that it will not change while the driver
periodically traverses it in order to update the kernel about multicast
route stats that were queried from the device.
One instance of list entry deletion (during route replace) was missed
and it can result in a use-after-free [1].
Fix by acquiring the mutex before deleting the entry from the list and
releasing it afterwards.
[1]
BUG: KASAN: slab-use-after-free in mlxsw_sp_mr_stats_update+0x4a5/0x540 drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c:1006 [mlxsw_spectrum]
Read of size 8 at addr ffff8881523c2fa8 by task kworker/2:5/22043
CPU: 2 UID: 0 PID: 22043 Comm: kworker/2:5 Not tainted 6.18.0-rc1-custom-g1a3d6d7cd014 #1 PREEMPT(full)
Hardware name: Mellanox Technologies Ltd. MSN2010/SA002610, BIOS 5.6.5 08/24/2017
Workqueue: mlxsw_core mlxsw_sp_mr_stats_update [mlxsw_spectrum]
Call Trace:
<TASK>
dump_stack_lvl+0xba/0x110
print_report+0x174/0x4f5
kasan_report+0xdf/0x110
mlxsw_sp_mr_stats_update+0x4a5/0x540 drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c:1006 [mlxsw_spectrum]
process_one_work+0x9cc/0x18e0
worker_thread+0x5df/0xe40
kthread+0x3b8/0x730
ret_from_fork+0x3e9/0x560
ret_from_fork_asm+0x1a/0x30
</TASK>
Allocated by task 29933:
kasan_save_stack+0x30/0x50
kasan_save_track+0x14/0x30
__kasan_kmalloc+0x8f/0xa0
mlxsw_sp_mr_route_add+0xd8/0x4770 [mlxsw_spectrum]
mlxsw_sp_router_fibmr_event_work+0x371/0xad0 drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c:7965 [mlxsw_spectrum]
process_one_work+0x9cc/0x18e0
worker_thread+0x5df/0xe40
kthread+0x3b8/0x730
ret_from_fork+0x3e9/0x560
ret_from_fork_asm+0x1a/0x30
Freed by task 29933:
kasan_save_stack+0x30/0x50
kasan_save_track+0x14/0x30
__kasan_save_free_info+0x3b/0x70
__kasan_slab_free+0x43/0x70
kfree+0x14e/0x700
mlxsw_sp_mr_route_add+0x2dea/0x4770 drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c:444 [mlxsw_spectrum]
mlxsw_sp_router_fibmr_event_work+0x371/0xad0 drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c:7965 [mlxsw_spectrum]
process_one_work+0x9cc/0x18e0
worker_thread+0x5df/0xe40
kthread+0x3b8/0x730
ret_from_fork+0x3e9/0x560
ret_from_fork_asm+0x1a/0x30
Fixes: f38656d067 ("mlxsw: spectrum_mr: Protect multicast route list with a lock")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/f996feecfd59fde297964bfc85040b6d83ec6089.1764695650.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 8b0e69763e ]
We sometimes observe use-after-free when dereferencing a neighbour [1].
The problem seems to be that the driver stores a pointer to the
neighbour, but without holding a reference on it. A reference is only
taken when the neighbour is used by a nexthop.
Fix by simplifying the reference counting scheme. Always take a
reference when storing a neighbour pointer in a neighbour entry. Avoid
taking a referencing when the neighbour is used by a nexthop as the
neighbour entry associated with the nexthop already holds a reference.
Tested by running the test that uncovered the problem over 300 times.
Without this patch the problem was reproduced after a handful of
iterations.
[1]
BUG: KASAN: slab-use-after-free in mlxsw_sp_neigh_entry_update+0x2d4/0x310
Read of size 8 at addr ffff88817f8e3420 by task ip/3929
CPU: 3 UID: 0 PID: 3929 Comm: ip Not tainted 6.18.0-rc4-virtme-g36b21a067510 #3 PREEMPT(full)
Hardware name: Nvidia SN5600/VMOD0013, BIOS 5.13 05/31/2023
Call Trace:
<TASK>
dump_stack_lvl+0x6f/0xa0
print_address_description.constprop.0+0x6e/0x300
print_report+0xfc/0x1fb
kasan_report+0xe4/0x110
mlxsw_sp_neigh_entry_update+0x2d4/0x310
mlxsw_sp_router_rif_gone_sync+0x35f/0x510
mlxsw_sp_rif_destroy+0x1ea/0x730
mlxsw_sp_inetaddr_port_vlan_event+0xa1/0x1b0
__mlxsw_sp_inetaddr_lag_event+0xcc/0x130
__mlxsw_sp_inetaddr_event+0xf5/0x3c0
mlxsw_sp_router_netdevice_event+0x1015/0x1580
notifier_call_chain+0xcc/0x150
call_netdevice_notifiers_info+0x7e/0x100
__netdev_upper_dev_unlink+0x10b/0x210
netdev_upper_dev_unlink+0x79/0xa0
vrf_del_slave+0x18/0x50
do_set_master+0x146/0x7d0
do_setlink.isra.0+0x9a0/0x2880
rtnl_newlink+0x637/0xb20
rtnetlink_rcv_msg+0x6fe/0xb90
netlink_rcv_skb+0x123/0x380
netlink_unicast+0x4a3/0x770
netlink_sendmsg+0x75b/0xc90
__sock_sendmsg+0xbe/0x160
____sys_sendmsg+0x5b2/0x7d0
___sys_sendmsg+0xfd/0x180
__sys_sendmsg+0x124/0x1c0
do_syscall_64+0xbb/0xfd0
entry_SYSCALL_64_after_hwframe+0x4b/0x53
[...]
Allocated by task 109:
kasan_save_stack+0x30/0x50
kasan_save_track+0x14/0x30
__kasan_kmalloc+0x7b/0x90
__kmalloc_noprof+0x2c1/0x790
neigh_alloc+0x6af/0x8f0
___neigh_create+0x63/0xe90
mlxsw_sp_nexthop_neigh_init+0x430/0x7e0
mlxsw_sp_nexthop_type_init+0x212/0x960
mlxsw_sp_nexthop6_group_info_init.constprop.0+0x81f/0x1280
mlxsw_sp_nexthop6_group_get+0x392/0x6a0
mlxsw_sp_fib6_entry_create+0x46a/0xfd0
mlxsw_sp_router_fib6_replace+0x1ed/0x5f0
mlxsw_sp_router_fib6_event_work+0x10a/0x2a0
process_one_work+0xd57/0x1390
worker_thread+0x4d6/0xd40
kthread+0x355/0x5b0
ret_from_fork+0x1d4/0x270
ret_from_fork_asm+0x11/0x20
Freed by task 154:
kasan_save_stack+0x30/0x50
kasan_save_track+0x14/0x30
__kasan_save_free_info+0x3b/0x60
__kasan_slab_free+0x43/0x70
kmem_cache_free_bulk.part.0+0x1eb/0x5e0
kvfree_rcu_bulk+0x1f2/0x260
kfree_rcu_work+0x130/0x1b0
process_one_work+0xd57/0x1390
worker_thread+0x4d6/0xd40
kthread+0x355/0x5b0
ret_from_fork+0x1d4/0x270
ret_from_fork_asm+0x11/0x20
Last potentially related work creation:
kasan_save_stack+0x30/0x50
kasan_record_aux_stack+0x8c/0xa0
kvfree_call_rcu+0x93/0x5b0
mlxsw_sp_router_neigh_event_work+0x67d/0x860
process_one_work+0xd57/0x1390
worker_thread+0x4d6/0xd40
kthread+0x355/0x5b0
ret_from_fork+0x1d4/0x270
ret_from_fork_asm+0x11/0x20
Fixes: 6cf3c971dc ("mlxsw: spectrum_router: Add private neigh table")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/92d75e21d95d163a41b5cea67a15cd33f547cba6.1764695650.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit b6b638bda2 ]
mlxsw_sp_router_schedule_work() takes a reference on a neighbour,
expecting a work item to release it later on. However, we might fail to
schedule the work item, in which case the neighbour reference count will
be leaked.
Fix by taking the reference just before scheduling the work item. Note
that mlxsw_sp_router_schedule_work() can receive a NULL neighbour
pointer, but neigh_clone() handles that correctly.
Spotted during code review, did not actually observe the reference count
leak.
Fixes: 151b89f602 ("mlxsw: spectrum_router: Reuse work neighbor initialization in work scheduler")
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/ec2934ae4aca187a8d8c9329a08ce93cca411378.1764695650.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit cd7671ef4c ]
The enable_mpesw() function returns -EINVAL if ldev->mode is not
MLX5_LAG_MODE_NONE. This means attempting to enable MPESW mode when it's
already enabled will fail. In contrast, disable_mpesw() properly checks
if the mode is MLX5_LAG_MODE_MPESW before proceeding, making it
naturally idempotent and safe to call multiple times.
Fix enable_mpesw() to return success if mpesw is already enabled.
Fixes: a32327a3a0 ("net/mlx5: Lag, Control MultiPort E-Switch single FDB mode")
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drori <shayd@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/1764602008-1334866-2-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit e8e032cd24 ]
The ERR007885 will lead to a TDAR race condition for mutliQ when the
driver sets TDAR and the UDMA clears TDAR simultaneously or in a small
window (2-4 cycles). And it will cause the udma_tx and udma_tx_arbiter
state machines to hang. Therefore, the commit 53bb20d1fa ("net: fec:
add variable reg_desc_active to speed things up") and the commit
a179aad12b ("net: fec: ERR007885 Workaround for conventional TX") have
added the workaround to fix the potential issue for the conventional TX
path. Similarly, the XDP TX path should also have the potential hang
issue, so add the workaround for XDP TX path.
Fixes: 6d6b39f180 ("net: fec: add initial XDP support")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20251128025915.2486943-1-wei.fang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 8048168df5 ]
The extra "count >= limit" check in stmmac_rx_zc() is redundant and
has no effect because the value of "count" doesn't change after the
while condition at this point.
However, it can change after "read_again:" label:
while (count < limit) {
...
if (count >= limit)
break;
read_again:
...
/* XSK pool expects RX frame 1:1 mapped to XSK buffer */
if (likely(status & rx_not_ls)) {
xsk_buff_free(buf->xdp);
buf->xdp = NULL;
dirty++;
count++;
goto read_again;
}
...
This patch addresses the same issue previously resolved in stmmac_rx()
by commit fa02de9e75 ("net: stmmac: fix rx budget limit check").
The fix is the same: move the check after the label to ensure that it
bounds the goto loop.
Fixes: bba2556efa ("net: stmmac: Enable RX via AF_XDP zero-copy")
Signed-off-by: Alexey Kodanev <aleksei.kodanev@bell-sw.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20251126104327.175590-1-aleksei.kodanev@bell-sw.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 1e43ebcd51 ]
ptp_clock_settime() assumes every ptp_clock has implemented settime64().
Stub it with -EOPNOTSUPP to prevent a NULL dereference.
The fix is similar to commit 329d050bbe ("gve: Implement settime64
with -EOPNOTSUPP").
Fixes: d734223b2f ("iavf: add initial framework for registering PTP clock")
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Tim Hostetler <thostet@google.com>
Link: https://patch.msgid.link/20251126094850.2842557-1-mschmidt@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit d9db257236 ]
When the "rx-vlan-filter" feature is enabled on a network device, the 8021q
module automatically adds a VLAN 0 hardware filter when the device is
brought administratively up.
For stmmac, this causes vlan_add_hw_rx_fltr() to create a new entry for
VID 0 in the mac_device_info->vlan_filter array, in the following format:
VLAN_TAG_DATA_ETV | VLAN_TAG_DATA_VEN | vid
Here, VLAN_TAG_DATA_VEN indicates that the hardware filter is enabled for
that VID.
However, on the delete path, vlan_del_hw_rx_fltr() searches the vlan_filter
array by VID only, without verifying whether a VLAN entry is enabled. As a
result, when the 8021q module attempts to remove VLAN 0, the function may
mistakenly match a zero-initialized slot rather than the actual VLAN 0
entry, causing incorrect deletions and leaving stale entries in the
hardware table.
Fix this by verifying that the VLAN entry's enable bit (VLAN_TAG_DATA_VEN)
is set before matching and deleting by VID. This ensures only active VLAN
entries are removed and avoids leaving stale entries in the VLAN filter
table, particularly for VLAN ID 0.
Fixes: ed64639bc1 ("net: stmmac: Add support for VLAN Rx filtering")
Signed-off-by: Ovidiu Panait <ovidiu.panait.rb@renesas.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20251113112721.70500-2-ovidiu.panait.rb@renesas.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit db37c6e510 ]
As the SG2042 has an internal rx delay, the delay should be removed
when initializing the mac, otherwise the phy will be misconfigurated.
Fixes: 543009e2d4 ("net: stmmac: dwmac-sophgo: Add support for Sophgo SG2042 SoC")
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Tested-by: Han Gao <rabenda.cn@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251114003805.494387-4-inochiama@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 1390b8b3d2 ]
Current unwinding code on error paths of ice_devlink_reinit_up() and
ice_probe() have manual call to ice_deinit_hw() (which is good, as there
is also manual call to ice_hw_init() there), which is then duplicated
(and was prior current series) in ice_deinit_dev().
Fix the above by removing ice_deinit_hw() from ice_deinit_dev().
Add a (now missing) call in ice_remove().
Reported-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/intel-wired-lan/20250717-jk-ddp-safe-mode-issue-v1-1-e113b2baed79@intel.com/
Fixes: 4d3f59bfa2 ("ice: split ice_init_hw() out from ice_init_dev()")
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 8a37f9e2ff ]
ice_deinit_dev() takes care of turning off adminq processing, which is
much needed during driver teardown (remove, reset, error path). Move it
to the very end where applicable.
For example, ice_deinit_hw() called after adminq deinit slows rmmod on
my two-card setup by about 60 seconds.
ice_init_dev() and ice_deinit_dev() scopes were reduced by previous
commits of the series, with a final touch of extracting ice_init_dev_hw()
out now (there is no deinit counterpart).
Note that removed ice_service_task_stop() call from ice_remove() is placed
in the ice_deinit_dev() (and stopping twice makes no sense).
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Stable-dep-of: 1390b8b3d2 ("ice: remove duplicate call to ice_deinit_hw() on error paths")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit c2fb9398f7 ]
Extract ice_init_dev() from ice_init(), to allow service task and IRQ
scheme teardown to be put after clearing SW constructs in the subsequent
commit.
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Stable-dep-of: 1390b8b3d2 ("ice: remove duplicate call to ice_deinit_hw() on error paths")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit ef825bdb46 ]
Move ice_init_pf() out of ice_init_dev().
Do the same for deinit counterpart.
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Stable-dep-of: 1390b8b3d2 ("ice: remove duplicate call to ice_deinit_hw() on error paths")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit e3bf1cdde7 ]
Move udp_tunnel_nic setup and ice_req_irq_msix_misc() call into
ice_init_pf(), remove some redundancy in the former while moving.
Move ice_free_irq_msix_misc() call into ice_deinit_pf(), to mimic
the above in terms of needed cleanup. Guard it via emptiness check,
to keep the allowance of half-initialized pf being cleaned up.
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Stable-dep-of: 1390b8b3d2 ("ice: remove duplicate call to ice_deinit_hw() on error paths")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 71430451f8 ]
Unroll actions of ice_init_pf() when it fails.
ice_deinit_pf() happens to be perfect to call here.
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Stable-dep-of: 1390b8b3d2 ("ice: remove duplicate call to ice_deinit_hw() on error paths")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 2fe18288fc ]
Move ice_init_interrupt_scheme() prior ice_init_pf().
To enable the move ice_set_pf_caps() was moved out from ice_init_pf()
to the caller (ice_init_dev()), and placed prior to the irq scheme init.
The move makes deinit order of ice_deinit_dev() and failure-path of
ice_init_pf() match (at least in terms of not calling
ice_clear_interrupt_scheme() and ice_deinit_pf() in opposite ways).
The new order aligns with findings made by Jakub Buchocki in
the commit 24b454bc35 ("ice: Fix ice module unload").
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Stable-dep-of: 1390b8b3d2 ("ice: remove duplicate call to ice_deinit_hw() on error paths")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 806c4f32a8 ]
Move service task start out of ice_init_pf(). Do analogous with deinit.
Service task is needed up to the very end of driver removal, later commit
of the series will move it later on execution timeline.
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Stable-dep-of: 1390b8b3d2 ("ice: remove duplicate call to ice_deinit_hw() on error paths")
Signed-off-by: Sasha Levin <sashal@kernel.org>
