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d510116c80
commit d992ed7e1b687ad7df0763d3e015a5358646210b upstream.
When device reset is triggered by feature changes such as toggling Rx
VLAN offload, wx->do_reset() is called to reinitialize Rx rings. The
hardware descriptor ring may retain stale values from previous sessions.
And only set the length to 0 in rx_desc[0] would result in building
malformed SKBs. Fix it to ensure a clean slate after device reset.
[ 549.186435] [ C16] ------------[ cut here ]------------
[ 549.186457] [ C16] kernel BUG at net/core/skbuff.c:2814!
[ 549.186468] [ C16] Oops: invalid opcode: 0000 [#1] SMP NOPTI
[ 549.186472] [ C16] CPU: 16 UID: 0 PID: 0 Comm: swapper/16 Kdump: loaded Not tainted 6.16.0-rc4+ #23 PREEMPT(voluntary)
[ 549.186476] [ C16] Hardware name: Micro-Star International Co., Ltd. MS-7E16/X670E GAMING PLUS WIFI (MS-7E16), BIOS 1.90 12/31/2024
[ 549.186478] [ C16] RIP: 0010:__pskb_pull_tail+0x3ff/0x510
[ 549.186484] [ C16] Code: 06 f0 ff 4f 34 74 7b 4d 8b 8c 24 c8 00 00 00 45 8b 84 24 c0 00 00 00 e9 c8 fd ff ff 48 c7 44 24 08 00 00 00 00 e9 5e fe ff ff <0f> 0b 31 c0 e9 23 90 5b ff 41 f7 c6 ff 0f 00 00 75 bf 49 8b 06 a8
[ 549.186487] [ C16] RSP: 0018:ffffb391c0640d70 EFLAGS: 00010282
[ 549.186490] [ C16] RAX: 00000000fffffff2 RBX: ffff8fe7e4d40200 RCX: 00000000fffffff2
[ 549.186492] [ C16] RDX: ffff8fe7c3a4bf8e RSI: 0000000000000180 RDI: ffff8fe7c3a4bf40
[ 549.186494] [ C16] RBP: ffffb391c0640da8 R08: ffff8fe7c3a4c0c0 R09: 000000000000000e
[ 549.186496] [ C16] R10: ffffb391c0640d88 R11: 000000000000000e R12: ffff8fe7e4d40200
[ 549.186497] [ C16] R13: 00000000fffffff2 R14: ffff8fe7fa01a000 R15: 00000000fffffff2
[ 549.186499] [ C16] FS: 0000000000000000(0000) GS:ffff8fef5ae40000(0000) knlGS:0000000000000000
[ 549.186502] [ C16] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 549.186503] [ C16] CR2: 00007f77d81d6000 CR3: 000000051a032000 CR4: 0000000000750ef0
[ 549.186505] [ C16] PKRU: 55555554
[ 549.186507] [ C16] Call Trace:
[ 549.186510] [ C16] <IRQ>
[ 549.186513] [ C16] ? srso_alias_return_thunk+0x5/0xfbef5
[ 549.186517] [ C16] __skb_pad+0xc7/0xf0
[ 549.186523] [ C16] wx_clean_rx_irq+0x355/0x3b0 [libwx]
[ 549.186533] [ C16] wx_poll+0x92/0x120 [libwx]
[ 549.186540] [ C16] __napi_poll+0x28/0x190
[ 549.186544] [ C16] net_rx_action+0x301/0x3f0
[ 549.186548] [ C16] ? srso_alias_return_thunk+0x5/0xfbef5
[ 549.186551] [ C16] ? __raw_spin_lock_irqsave+0x1e/0x50
[ 549.186554] [ C16] ? srso_alias_return_thunk+0x5/0xfbef5
[ 549.186557] [ C16] ? wake_up_nohz_cpu+0x35/0x160
[ 549.186559] [ C16] ? srso_alias_return_thunk+0x5/0xfbef5
[ 549.186563] [ C16] handle_softirqs+0xf9/0x2c0
[ 549.186568] [ C16] __irq_exit_rcu+0xc7/0x130
[ 549.186572] [ C16] common_interrupt+0xb8/0xd0
[ 549.186576] [ C16] </IRQ>
[ 549.186577] [ C16] <TASK>
[ 549.186579] [ C16] asm_common_interrupt+0x22/0x40
[ 549.186582] [ C16] RIP: 0010:cpuidle_enter_state+0xc2/0x420
[ 549.186585] [ C16] Code: 00 00 e8 11 0e 5e ff e8 ac f0 ff ff 49 89 c5 0f 1f 44 00 00 31 ff e8 0d ed 5c ff 45 84 ff 0f 85 40 02 00 00 fb 0f 1f 44 00 00 <45> 85 f6 0f 88 84 01 00 00 49 63 d6 48 8d 04 52 48 8d 04 82 49 8d
[ 549.186587] [ C16] RSP: 0018:ffffb391c0277e78 EFLAGS: 00000246
[ 549.186590] [ C16] RAX: ffff8fef5ae40000 RBX: 0000000000000003 RCX: 0000000000000000
[ 549.186591] [ C16] RDX: 0000007fde0faac5 RSI: ffffffff826e53f6 RDI: ffffffff826fa9b3
[ 549.186593] [ C16] RBP: ffff8fe7c3a20800 R08: 0000000000000002 R09: 0000000000000000
[ 549.186595] [ C16] R10: 0000000000000000 R11: 000000000000ffff R12: ffffffff82ed7a40
[ 549.186596] [ C16] R13: 0000007fde0faac5 R14: 0000000000000003 R15: 0000000000000000
[ 549.186601] [ C16] ? cpuidle_enter_state+0xb3/0x420
[ 549.186605] [ C16] cpuidle_enter+0x29/0x40
[ 549.186609] [ C16] cpuidle_idle_call+0xfd/0x170
[ 549.186613] [ C16] do_idle+0x7a/0xc0
[ 549.186616] [ C16] cpu_startup_entry+0x25/0x30
[ 549.186618] [ C16] start_secondary+0x117/0x140
[ 549.186623] [ C16] common_startup_64+0x13e/0x148
[ 549.186628] [ C16] </TASK>
Fixes: 3c47e8ae11 ("net: libwx: Support to receive packets in NAPI")
Cc: stable@vger.kernel.org
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250714024755.17512-4-jiawenwu@trustnetic.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
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Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.