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Subject[PATCH] bnx2: Use dev_kfree_skb_any() in bnx2_tx_int()
Date
Using dev_kfree_skb_any() will resolve the below issue when a
netconsole message is transmitted in an irq.

------------[ cut here ]------------
WARNING: at net/core/skbuff.c:451 skb_release_head_state+0x7b/0xe1()
...
Pid: 0, comm: swapper/2 Not tainted 3.4.55 #1
Call Trace:
<IRQ> [<ffffffff8104934c>] warn_slowpath_common+0x85/0x9d
[<ffffffff8104937e>] warn_slowpath_null+0x1a/0x1c
[<ffffffff81429aa7>] skb_release_head_state+0x7b/0xe1
[<ffffffff814297e1>] __kfree_skb+0x16/0x81
[<ffffffff814298a0>] consume_skb+0x54/0x69
[<ffffffffa015925b>] bnx2_tx_int.clone.6+0x1b0/0x33e [bnx2]
[<ffffffff8129c54d>] ? unmask_msi_irq+0x10/0x12
[<ffffffffa015aa06>] bnx2_poll_work+0x3a/0x73 [bnx2]
[<ffffffffa015aa73>] bnx2_poll_msix+0x34/0xb4 [bnx2]
[<ffffffff814466a2>] netpoll_poll_dev+0xb9/0x1b7
[<ffffffff814467d7>] ? find_skb+0x37/0x82
[<ffffffff814461ed>] netpoll_send_skb_on_dev+0x117/0x200
[<ffffffff81446a52>] netpoll_send_udp+0x230/0x242
[<ffffffffa0174296>] write_msg+0xa7/0xfb [netconsole]
[<ffffffff814258a4>] ? sk_free+0x1c/0x1e
[<ffffffff810495ad>] __call_console_drivers+0x7d/0x8f
[<ffffffff81049674>] _call_console_drivers+0xb5/0xd0
[<ffffffff8104a134>] console_unlock+0x131/0x219
[<ffffffff8104a7f9>] vprintk+0x3bc/0x405
[<ffffffff81460073>] ? NF_HOOK.clone.1+0x4c/0x53
[<ffffffff81460308>] ? ip_rcv+0x23c/0x268
[<ffffffff814ddd4f>] printk+0x68/0x71
[<ffffffff813315b3>] __dev_printk+0x78/0x7a
[<ffffffff813316b2>] dev_warn+0x53/0x55
[<ffffffff8127f181>] ? swiotlb_unmap_sg_attrs+0x47/0x5c
[<ffffffffa004f876>] complete_scsi_command+0x28a/0x4a0 [hpsa]
[<ffffffffa004fadb>] finish_cmd+0x4f/0x66 [hpsa]
[<ffffffffa004fd97>] process_indexed_cmd+0x48/0x54 [hpsa]
[<ffffffffa004ff25>] do_hpsa_intr_msi+0x4e/0x77 [hpsa]
[<ffffffff810baebb>] handle_irq_event_percpu+0x5e/0x1b6
[<ffffffff81088a0b>] ? timekeeping_update+0x43/0x45
[<ffffffff810bb04b>] handle_irq_event+0x38/0x54
[<ffffffff8102bd1e>] ? ack_apic_edge+0x36/0x3a
[<ffffffff810bd762>] handle_edge_irq+0xa5/0xc8
[<ffffffff81010d56>] handle_irq+0x127/0x135
[<ffffffff814e3426>] ? __atomic_notifier_call_chain+0x12/0x14
[<ffffffff814e343c>] ? atomic_notifier_call_chain+0x14/0x16
[<ffffffff814e897d>] do_IRQ+0x4d/0xb4
[<ffffffff814dffea>] common_interrupt+0x6a/0x6a
<EOI> [<ffffffff812b7603>] ? intel_idle+0xd8/0x112
[<ffffffff812b7603>] ? intel_idle+0xd8/0x112
[<ffffffff812b75e9>] ? intel_idle+0xbe/0x112
[<ffffffff814012fc>] cpuidle_enter+0x12/0x14
[<ffffffff814019c2>] cpuidle_idle_call+0xd1/0x19b
[<ffffffff81016551>] cpu_idle+0xb6/0xff
[<ffffffff814d726b>] start_secondary+0xc8/0xca
---[ end trace 3f15cd66441c770d ]---

Signed-off-by: David Mackey <tdmackey@booleanhaiku.com>
---
drivers/net/ethernet/broadcom/bnx2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnx2.c b/drivers/net/ethernet/broadcom/bnx2.c
index e838a3f..372cbb5 100644
--- a/drivers/net/ethernet/broadcom/bnx2.c
+++ b/drivers/net/ethernet/broadcom/bnx2.c
@@ -2868,7 +2868,7 @@ bnx2_tx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
sw_cons = BNX2_NEXT_TX_BD(sw_cons);

tx_bytes += skb->len;
- dev_kfree_skb(skb);
+ dev_kfree_skb_any(skb);
tx_pkt++;
if (tx_pkt == budget)
break;
--
1.7.9.5


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