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Subject: Re: 2.6.35-rc2 kernel crashes under heavy network load
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Lazy <lazy404@gmail.com>
Cc: linux-kernel@vger.kernel.org, netdev <netdev@vger.kernel.org>
In-Reply-To: <AANLkTinal4PZ3ESQMIdqd8_zmnSDTNgweczNsYdGobTS@mail.gmail.com>
References: <AANLkTinal4PZ3ESQMIdqd8_zmnSDTNgweczNsYdGobTS@mail.gmail.com>
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Date: Wed, 16 Jun 2010 16:34:22 +0200
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Le mercredi 16 juin 2010 à 15:39 +0200, Lazy a écrit :
> Our linux router crashes while rebooting under heavy network load
> (800kpps generated by pktgen on other machine).
> While running everything system seams stable.
> 
> Any pointers what can I do to help resolve this issue ?
> 
> the system is Dell R210 X3420, 64bit kernel, debian 5.0 Broadcom BCM5716
> same thing happens on a Dell R410 running same software Broadcom BCM5716
> 
> kernel version is Linux version 2.6.35-rc2 (root@cisco3-2) (gcc
> version 4.3.2 (Debian 4.3.2-1.1) ) #2 SMP Fri Jun 11 10:22:51 CEST
> 2010
> 
> general protection fault: 0000 [#1] SMP
> last sysfs file: /sys/devices/platform/dcdbas/smi_data_buf_phys_addr
> CPU 1
> Modules linked in: iTCO_wdt 8021q ipmi_poweroff ipmi_devintf ipmi_si
> ipmi_msghandler mptctl loop ioatdma dca button evdev dcdbas raid10
> raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq
> async_tx raid1 raid0 linear md_mod sd_mod sg sr_mod cdrom
> ide_pci_generic ide_core usbhid mptsas ata_piix mptscsih libata
> mptbase scsi_transport_sas scsi_mod ehci_hcd uhci_hcd bnx2 fan [last
> unloaded: scsi_wait_scan]
> 
> Pid: 20, comm: events/1 Not tainted 2.6.35-rc2 #2 0N051F/PowerEdge R410
> RIP: 0010:[<ffffffff81087ae9>]  [<ffffffff81087ae9>] drain_array+0x29/0xc7
> RSP: 0000:ffff88012fb6ddc0  EFLAGS: 00010202
> RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000
> RDX: 0720072007200720 RSI: ffff88012fc04ec0 RDI: ffff88012fc1be00
> RBP: ffff88012fb6de00 R08: 0000000000000000 R09: ffff88012fa91618
> R10: 000000102cdbdd88 R11: 0000000000000000 R12: ffff88012fc04ec0
> R13: 0720072007200720 R14: ffff88012fc04ec0 R15: 0000000000000000

072007200720 pattern is the signature of a known bug.


commit 386f40c86d6c8d5b717 (Revert "tty: fix a little bug in scrup,
vt.c") will help you.

This is probably solved in current git tree...