Re: [2.6.7-bk] NFS-related kernel panic
From: Chris Wright
Date: Mon Jun 21 2004 - 22:37:06 EST
* Bob Gill (gillb4@xxxxxxxxxxxxxxx) wrote:
> Ok. I get (a very similar) error with 2.6.7-bk4.
> The error message I get is:
> Starting portmapper: [OK]
> Starting NFS statd: Kernel panic: Aiee, killing interrupt handler!
> bad: scheduling while atomic!
> [<c02a2c37>] schedule+0x483/0x488
> [<c0133298>] __get_free_pages+0x33/0x3f
> [<c026974c>] tcp_poll+0x34/0x15a
> [<c02a30b5>] schedule_timeout+0xb5/0xb7
> [<c0248fb3>] sock_poll+0x29/0x31
> [<c015da2e>] do_pollfd+0x4f/0x90
> [<c015db10>] do_poll+0xa1/0xc0
> [<c016dc7e>] sys_poll+0x14f/0x211
> [<c015d09d>] __pollwait+0x0/0xc6
> [<c014afd2>] sys_close+0x63/0x96
> [<c0103eb1>] sysenter_past_esp+0x52/0x71
> In interrupt handler - not syncing
The lockless loopback transmission patch mucks up the preempt count.
Can you give this patch a try?
thanks,
-chris
--
Linux Security Modules http://lsm.immunix.org http://lsm.bkbits.net
===== loopback.c 1.15 vs edited =====
--- 1.15/drivers/net/loopback.c 2004-06-20 17:35:52 -07:00
+++ edited/loopback.c 2004-06-21 20:23:06 -07:00
@@ -143,10 +143,11 @@
dev->last_rx = jiffies;
if (likely(loopback_stats)) {
- get_cpu_ptr(loopback_stats)->rx_bytes += skb->len;
- get_cpu_ptr(loopback_stats)->tx_bytes += skb->len;
- get_cpu_ptr(loopback_stats)->rx_packets++;
- get_cpu_ptr(loopback_stats)->tx_packets++;
+ struct net_device_stats *stats = get_cpu_ptr(loopback_stats);
+ stats->rx_bytes += skb->len;
+ stats->tx_bytes += skb->len;
+ stats->rx_packets++;
+ stats->tx_packets++;
put_cpu_ptr(loopback_stats);
}
-
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