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| author | Markus Brunner <super.firetwister@gmail.com> | 2009-04-15 11:35:40 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-04-15 11:35:40 +0200 |
| commit | cbea270714faae389c48c2901ee7988ecd62f664 (patch) | |
| tree | 7ba6f7f4aec9838e494fc35bee7e7acd2187b3a9 /drivers/net | |
| parent | myr10ge: again fix lro_gen_skb() alignment (diff) | |
| download | linux-cbea270714faae389c48c2901ee7988ecd62f664.tar.xz linux-cbea270714faae389c48c2901ee7988ecd62f664.zip | |
gianfar: stop send queue before resetting gianfar
After a transmit timed out, the reset task will be called, which will free the
allocated resources(stop_gfar). If gfar_poll will be called before the
resources get allocated again gfar_clean_tx_ring will call
dev_kfree_skb_any(NULL).
Example crash:
ops: Kernel access of bad area, sig: 11 [#1]
PREEMPT RSBBA100
Modules linked in:
NIP: c01a10c4 LR: c013b254 CTR: c013c038
REGS: c02e7d20 TRAP: 0300 Not tainted (2.6.27.20)
MSR: 00001032 <ME,IR,DR> CR: 24000082 XER: 20000000
DAR: 000000a0, DSISR: 20000000
TASK = c02ce578[0] 'swapper' THREAD: c02e6000
GPR00: 000000a0 c02e7dd0 c02ce578 00000000 00000040 00000001 c02ec1c0
00001032
GPR08: c080d1e0 df9ea800 00000000 00000000 24000082 ffffffff 0404f000
00000000
GPR16: ffffffbf ffffffff ffffffff ffdff7ff ffffffff c02d0fd4 00100100
00200200
GPR24: c031220c 00000001 00000001 00000000 00000000 df849800 ff109000
df849b80
NIP [c01a10c4] dev_kfree_skb_irq+0x18/0x70
LR [c013b254] gfar_clean_tx_ring+0x70/0x11c
Call Trace:
[c02e7dd0] [c003e978] update_wall_time+0x730/0x744 (unreliable)
[c02e7df0] [c013b254] gfar_clean_tx_ring+0x70/0x11c
[c02e7e10] [c013c07c] gfar_poll+0x44/0x150
[c02e7e30] [c01a064c] net_rx_action+0xa8/0x19c
[c02e7e70] [c00251d4] __do_softirq+0x64/0xc0
[c02e7e90] [c0006384] do_softirq+0x40/0x58
[c02e7ea0] [c00250a8] irq_exit+0x40/0x9c
[c02e7eb0] [c000642c] do_IRQ+0x90/0xac
[c02e7ec0] [c0010ab4] ret_from_except+0x0/0x14
--- Exception: 501 at cpu_idle+0x9c/0xf8
LR = cpu_idle+0x9c/0xf8
[c02e7f80] [c0009820] cpu_idle+0x58/0xf8 (unreliable)
[c02e7fa0] [c01fb8c8] __got2_end+0x7c/0x90
[c02e7fc0] [c026c794] start_kernel+0x2c0/0x2d4
[c02e7ff0] [00003438] 0x3438
Instruction dump:
7fa00124 80010024 bba10014 38210020 7c0803a6 4e800020 9421ffe0 7c0802a6
7c6b1b78 90010024 380300a0 bfa10014 <7d200028> 3129ffff 7d20012d 40a2fff4
Kernel panic - not syncing: Fatal exception in interrupt
This Patch calls netif_stop_queue before calling stop_gfar.
Signed-off-by: Markus Brunner <super.firetwister@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/gianfar.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c index 65f55877be95..b2c49679bba7 100644 --- a/drivers/net/gianfar.c +++ b/drivers/net/gianfar.c @@ -1583,8 +1583,10 @@ static void gfar_reset_task(struct work_struct *work) struct net_device *dev = priv->ndev; if (dev->flags & IFF_UP) { + netif_stop_queue(dev); stop_gfar(dev); startup_gfar(dev); + netif_start_queue(dev); } netif_tx_schedule_all(dev); |