inconsistent {hardirq-on-W} -> {in-hardirq-W} usage.
swapper/0 [HC1[1]:SC1[2]:HE0:SE0] takes:
(&ei_local->page_lock){++..}, at: [<f935079f>] ei_interrupt+0x49/0x294 [8390]
{hardirq-on-W} state was registered at:
[<c102d152>] lock_acquire+0x60/0x80
[<c1200376>] _spin_lock+0x23/0x32
[<f9350d30>] ei_start_xmit+0xa6/0x236 [8390]
[<c11a2715>] dev_hard_start_xmit+0x1c4/0x221
[<c11af1b5>] __qdisc_run+0xcc/0x185
[<c11a411e>] dev_queue_xmit+0x140/0x22e
[<f93a89f1>] mld_sendpack+0x1a0/0x26a [ipv6]
[<f93a95cb>] mld_ifc_timer_expire+0x1d6/0x1fd [ipv6]
[<c101dab2>] run_timer_softirq+0xf2/0x14a
[<c101a691>] __do_softirq+0x55/0xb0
[<c1004a8d>] do_softirq+0x58/0xbd
irq event stamp: 952615
hardirqs last enabled at (952614): [<c1200800>]
_spin_unlock_irqrestore+0x36/0x59
hardirqs last disabled at (952615): [<c1002fcf>] common_interrupt+0x1b/0x2c
softirqs last enabled at (952574): [<c101a6e7>] __do_softirq+0xab/0xb0
softirqs last disabled at (952579): [<c1004a8d>] do_softirq+0x58/0xbd
other info that might help us debug this:
1 lock held by swapper/0:
#0: (&dev->_xmit_lock){-...}, at: [<c11af146>] __qdisc_run+0x5d/0x185
stack backtrace:
[<c1003502>] show_trace_log_lvl+0x54/0xfd
[<c1003b6a>] show_trace+0xd/0x10
[<c1003c0e>] dump_stack+0x19/0x1b
[<c102b7c7>] print_usage_bug+0x1cc/0x1d9
[<c102bbbf>] mark_lock+0x8a/0x360
[<c102c8ac>] __lock_acquire+0x38f/0x970
[<c102d152>] lock_acquire+0x60/0x80
[<c1200376>] _spin_lock+0x23/0x32
[<f935079f>] ei_interrupt+0x49/0x294 [8390]
[<f94983fa>] ei_irq_wrapper+0xb/0x1d [pcnet_cs]
[<c103f133>] handle_IRQ_event+0x20/0x50
[<c104026d>] handle_level_irq+0x76/0xc1
[<c1004bc2>] do_IRQ+0xd0/0xf6
[<c1002fd9>] common_interrupt+0x25/0x2c
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