I've got a b44 and am using netconsole to debug some DRM issues, I've
been seeing this with varying kernel from Fedora and vanilla (latest
is 2.6.15-rc6)...
BUG: spinlock trylock failure on UP on CPU#0, eglgears/3974
lock: f5d4a94c, .magic: dead4ead, .owner: eglgears/3974, .owner_cpu: 0
[<c01f14cc>] _raw_spin_trylock+0x3c/0x40
[<c032b650>] _spin_trylock+0x10/0x40
[<c02d7bf3>] qdisc_restart+0x43/0x230
[<c02c945e>] dev_queue_xmit+0x7e/0x2d0
[<c02e667b>] ip_output+0x17b/0x2e0
[<c02e6320>] ip_finish_output2+0x0/0x1e0
[<c02e6a84>] ip_queue_xmit+0x2a4/0x500
[<c02e5c80>] dst_output+0x0/0x20
[<c01c7368>] avc_has_perm_noaudit+0x48/0x150
[<f8b4a346>] tcp_in_window+0x276/0x540 [ip_conntrack]
[<c02fd763>] tcp_v4_send_check+0x43/0xf0
[<c02f7c77>] tcp_transmit_skb+0x3f7/0x760
[<c02f8f21>] tcp_write_xmit+0x121/0x3a0
[<c02f91c7>] __tcp_push_pending_frames+0x27/0x90
[<c02f617e>] tcp_rcv_established+0x2ee/0x820
[<c02fe8f4>] tcp_v4_do_rcv+0x94/0xe0
[<c02ff217>] tcp_v4_rcv+0x8d7/0x8f0
[<c02e29e0>] ip_local_deliver_finish+0x0/0x220
[<c02e3140>] ip_rcv_finish+0x0/0x320
[<c02e2873>] ip_local_deliver+0x123/0x290
[<c02e29e0>] ip_local_deliver_finish+0x0/0x220
[<c02e2f23>] ip_rcv+0x323/0x540
[<c02e3140>] ip_rcv_finish+0x0/0x320
[<c03274db>] packet_rcv_spkt+0xfb/0x280
[<c028a21a>] sd_rw_intr+0x7a/0x3e0
[<c02e2c00>] ip_rcv+0x0/0x540
[<c02c9bc0>] netif_receive_skb+0x1a0/0x290
[<c02c371a>] __alloc_skb+0x4a/0x150
[<f881e138>] b44_rx+0x1c8/0x300 [b44]
[<f881e2c8>] b44_poll+0x58/0x180 [b44]
[<c02c9e3d>] net_rx_action+0x9d/0x1b0
[<c0120482>] __do_softirq+0x42/0xa0
[<c0104afe>] do_softirq+0x4e/0x60
=======================
[<c01205a5>] irq_exit+0x35/0x40
[<c01049ba>] do_IRQ+0x5a/0xa0
[<c01033ce>] common_interrupt+0x1a/0x20
[<c032b8bb>] _spin_unlock_irq+0xb/0x20
[<f881e82d>] b44_start_xmit+0x25d/0x440 [b44]
[<c02d611f>] find_skb+0x2f/0xf0
[<c02d6297>] netpoll_send_skb+0xb7/0x140
[<f8ae805c>] write_msg+0x5c/0x90 [netconsole]
[<f8ae8000>] write_msg+0x0/0x90 [netconsole]
[<c011b303>] __call_console_drivers+0x43/0x60
[<c011b447>] call_console_drivers+0x97/0x1a0
[<c011ba39>] release_console_sem+0x29/0xc0
[<c011b8a2>] vprintk+0x1f2/0x2d0
[<c032b8b5>] _spin_unlock_irq+0x5/0x20
[<c0117679>] __wake_up_common+0x39/0x70
[<c011b6ab>] printk+0x1b/0x20
[<f8d3c282>] drm_ioctl+0x152/0x214 [drm]
[<c017496a>] do_ioctl+0x8a/0xa0
[<c0174b30>] vfs_ioctl+0x60/0x200
[<c0174d42>] sys_ioctl+0x72/0x90
[<c0103201>] syscall_call+0x7/0xb
Dead loop on netdevice eth0, fix it urgently!
Any ideas? btw, it could the drm experiments I'm doing causing it but
I don't see any evidence of that in the traces...
Dave.
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