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SubjectBUG: warning at kernel/softirq.c:141/local_bh_enable()
Hi,

I recently upgraded some router/NAT devices from 2.4.25 to 2.6.17.8. They're using VIA C3 processors and NatSemi DP83815 NICs.

Right after the upgrade I started noticing these error messages on one of the heavier-loaded boxes. This particular box routes and does NAT for around 400 users, peaking at 6Mb/sec of throughput.

The errors were happening about every 3-5 minutes. I statically set eth6 to 100baseTX-FD with mii-tool, and now the errors appear every few hours for 10-20 minute stretches.

I searched Google and couldn't find any insight (FYI, I'm NOT using the CIPE patches).

Any ideas?

Oct 16 16:51:32 localhost kernel: NETDEV WATCHDOG: eth6: transmit timed out
Oct 16 16:51:32 localhost kernel: eth6: Transmit timed out, status 0x000000, resetting...
Oct 16 16:51:32 localhost kernel: eth6: DSPCFG accepted after 0 usec.
Oct 16 16:51:32 localhost kernel: eth6: Setting full-duplex based on negotiated link capability.
Oct 16 16:51:36 localhost kernel: NETDEV WATCHDOG: eth6: transmit timed out
Oct 16 16:51:36 localhost kernel: eth6: Transmit timed out, status 0x000000, resetting...
Oct 16 16:51:36 localhost kernel: eth6: DSPCFG accepted after 0 usec.
Oct 16 16:51:36 localhost kernel: eth6: Setting full-duplex based on negotiated link capability.
Oct 16 16:51:43 localhost kernel: eth6: Transmit timed out, status 0x000000, resetting...
Oct 16 16:51:43 localhost kernel: NETDEV WATCHDOG: eth6: transmit timed out
Oct 16 16:51:43 localhost kernel: BUG: warning at kernel/softirq.c:141/local_bh_enable()
Oct 16 16:51:43 localhost kernel: <c029a975> __kfree_skb+0xa5/0x120 <c0236790> drain_tx+0x20/0x40
Oct 16 16:51:43 localhost kernel: <c011c0fb> local_bh_enable+0x6b/0x70 <c0310bd1> destroy_conntrack+0x31/0xe0
Oct 16 16:51:43 localhost kernel: <c02367bf> reinit_ring+0xf/0x50 <c0237fdf> tx_timeout+0x4f/0xe0
Oct 16 16:51:43 localhost kernel: <c0105d67> timer_interrupt+0x67/0x70 <c02aa500> dev_watchdog+0x0/0xb0
Oct 16 16:51:43 localhost kernel: <c011bf52> __do_softirq+0x42/0x90 <c011bfc6> do_softirq+0x26/0x30
Oct 16 16:51:43 localhost kernel: <c02aa5a0> dev_watchdog+0xa0/0xb0 <c011f3f9> run_timer_softirq+0x129/0x170
Oct 16 16:51:43 localhost kernel: <c0101cab> default_idle+0x2b/0x60 <c0101d1a> cpu_idle+0x3a/0x50
Oct 16 16:51:43 localhost kernel: <c0104a1e> do_IRQ+0x1e/0x30 <c0102d8a> common_interrupt+0x1a/0x20
Oct 16 16:51:43 localhost kernel: <c0408676> start_kernel+0x1e6/0x2b0 <c0408220> unknown_bootoption+0x0/0x270
Oct 16 16:51:43 localhost kernel: BUG: warning at kernel/softirq.c:141/local_bh_enable()
Oct 16 16:51:43 localhost kernel: <c029a975> __kfree_skb+0xa5/0x120 <c0236790> drain_tx+0x20/0x40
Oct 16 16:51:43 localhost kernel: <c011c0fb> local_bh_enable+0x6b/0x70 <c0310c16> destroy_conntrack+0x76/0xe0
Oct 16 16:51:43 localhost kernel: <c02367bf> reinit_ring+0xf/0x50 <c0237fdf> tx_timeout+0x4f/0xe0
Oct 16 16:51:43 localhost kernel: <c02aa5a0> dev_watchdog+0xa0/0xb0 <c011f3f9> run_timer_softirq+0x129/0x170
Oct 16 16:51:43 localhost kernel: <c0105d67> timer_interrupt+0x67/0x70 <c02aa500> dev_watchdog+0x0/0xb0
Oct 16 16:51:43 localhost kernel: <c011bf52> __do_softirq+0x42/0x90 <c011bfc6> do_softirq+0x26/0x30
Oct 16 16:51:43 localhost kernel: <c0104a1e> do_IRQ+0x1e/0x30 <c0102d8a> common_interrupt+0x1a/0x20
Oct 16 16:51:43 localhost kernel: <c0101cab> default_idle+0x2b/0x60 <c0101d1a> cpu_idle+0x3a/0x50
Oct 16 16:51:43 localhost kernel: <c0408676> start_kernel+0x1e6/0x2b0 <c0408220> unknown_bootoption+0x0/0x270
Oct 16 16:51:43 localhost kernel: BUG: warning at kernel/softirq.c:141/local_bh_enable()
Oct 16 16:51:43 localhost kernel: <c011c0fb> local_bh_enable+0x6b/0x70 <c0310bd1> destroy_conntrack+0x31/0xe0
Oct 16 16:51:43 localhost kernel: <c029a975> __kfree_skb+0xa5/0x120 <c0236790> drain_tx+0x20/0x40
Oct 16 16:51:43 localhost kernel: <c02aa5a0> dev_watchdog+0xa0/0xb0 <c011f3f9> run_timer_softirq+0x129/0x170
Oct 16 16:51:43 localhost kernel: <c02367bf> reinit_ring+0xf/0x50 <c0237fdf> tx_timeout+0x4f/0xe0
Oct 16 16:51:43 localhost kernel: <c0105d67> timer_interrupt+0x67/0x70 <c02aa500> dev_watchdog+0x0/0xb0
Oct 16 16:51:43 localhost kernel: <c011bf52> __do_softirq+0x42/0x90 <c011bfc6> do_softirq+0x26/0x30
Oct 16 16:51:43 localhost kernel: <c0104a1e> do_IRQ+0x1e/0x30 <c0102d8a> common_interrupt+0x1a/0x20
Oct 16 16:51:43 localhost kernel: <c0101cab> default_idle+0x2b/0x60 <c0101d1a> cpu_idle+0x3a/0x50
Oct 16 16:51:43 localhost kernel: <c0408676> start_kernel+0x1e6/0x2b0 <c0408220> unknown_bootoption+0x0/0x270
Oct 16 16:51:43 localhost kernel: BUG: warning at kernel/softirq.c:141/local_bh_enable()
Oct 16 16:51:43 localhost kernel: <c011c0fb> local_bh_enable+0x6b/0x70 <c0310c16> destroy_conntrack+0x76/0xe0
Oct 16 16:51:43 localhost kernel: <c029a975> __kfree_skb+0xa5/0x120 <c0236790> drain_tx+0x20/0x40
Oct 16 16:51:43 localhost kernel: <c0105d67> timer_interrupt+0x67/0x70 <c02aa500> dev_watchdog+0x0/0xb0
Oct 16 16:51:43 localhost kernel: <c02aa5a0> dev_watchdog+0xa0/0xb0 <c011f3f9> run_timer_softirq+0x129/0x170
Oct 16 16:51:43 localhost kernel: <c02367bf> reinit_ring+0xf/0x50 <c0237fdf> tx_timeout+0x4f/0xe0
Oct 16 16:51:43 localhost kernel: <c0104a1e> do_IRQ+0x1e/0x30 <c0102d8a> common_interrupt+0x1a/0x20
Oct 16 16:51:43 localhost kernel: <c011bf52> __do_softirq+0x42/0x90 <c011bfc6> do_softirq+0x26/0x30
Oct 16 16:51:43 localhost kernel: <c0101cab> default_idle+0x2b/0x60 <c0101d1a> cpu_idle+0x3a/0x50
Oct 16 16:51:43 localhost kernel: <c0408676> start_kernel+0x1e6/0x2b0 <c0408220> unknown_bootoption+0x0/0x270
Oct 16 16:51:43 localhost kernel: eth6: DSPCFG accepted after 0 usec.
Oct 16 16:51:43 localhost kernel: eth6: Setting full-duplex based on negotiated link capability.
Oct 16 16:51:47 localhost kernel: NETDEV WATCHDOG: eth6: transmit timed out
Oct 16 16:51:47 localhost kernel: eth6: Transmit timed out, status 0x000000, resetting...
Oct 16 16:51:47 localhost kernel: eth6: DSPCFG accepted after 0 usec.
Oct 16 16:51:47 localhost kernel: eth6: Setting full-duplex based on negotiated link capability.



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