[Xen-bugs] [Bug 185] New: kernel BUG at drivers/xen/netback/netback.c:349 (net_rx_action)!

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=185

           Summary: kernel BUG at drivers/xen/netback/netback.c:349
                    (net_rx_action)!
           Product: Xen
           Version: unstable
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Severity: critical
          Priority: P2
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: pl@xxxxxxxxxx
                CC: hohnbaum@xxxxxxxxxx,niv@xxxxxxxxxx


The system is a P4 2.8 GHz, 512 MB (256 for dom0).

The network card according to lspci:
0000:04:03.0 Ethernet controller: Intel Corp. 82541GI/PI Gigabit Ethernet 
Controller

I'm using the defult config, in which it appears that both
CONFIG_XEN_NETDEV_GRANT_TX and CONFIG_XEN_NETDEV_GRANT_RX are enabled by 
default.

***
I retried the test, turning these options off for both dom0 and domU kernels,
and I did not hit this bug.
***

hg tip is:
changeset:   6370:f34e732ed4bfd24f2ab33f5d5ad72ba1635141a4
tag:         tip
user:        cl349@xxxxxxxxxxxxxxxxxxxx
date:        Tue Aug 23 14:58:59 2005
summary:     Xenstore testsuite robustness: save output rather than rerun on
failure.

I have a file-backed vbd domU partition that resides on an NFS server mounted by
two machines.  I've used this for migration testing in the past.  When I just
tried to bring up the guest, I got this error while it was booting:
(XEN) (file=grant_table.c, line=1152) Bad flags (5) or dom (0). (NB. expected 
dom 0)
(XEN) gnttab_donate: gnttab_prepare_for_transfer fails
kernel BUG at drivers/xen/netback/netback.c:349 (net_rx_action)!
 [<c02f24e6>] net_rx_action+0x3d6/0x4e0
 [<c011a7e2>] activate_task+0x62/0x80
 [<c011a904>] try_to_wake_up+0xd4/0x110
 [<c011b481>] __wake_up_common+0x41/0x70
 [<c011b4fa>] __wake_up+0x4a/0xb0
 [<c0130e77>] __queue_work+0xa7/0xc0
 [<c03e2c04>] alloc_skb_from_cache+0x44/0xe0
 [<c03e94f0>] netif_rx+0xb0/0x280
 [<c02f402c>] loopback_start_xmit+0x9c/0xf0
 [<c03e92d5>] dev_queue_xmit+0x215/0x330
 [<c043594c>] br_dev_queue_push_xmit+0x9c/0x110
 [<c03f4b48>] nf_iterate+0x78/0x90
 [<c0436600>] br_pass_frame_up_finish+0x0/0x20
 [<c03e2e44>] kfree_skbmem+0x24/0x30
 [<c03e9a3d>] netif_receive_skb+0x1bd/0x270
 [<c0436600>] br_pass_frame_up_finish+0x0/0x20
 [<c043660f>] br_pass_frame_up_finish+0xf/0x20
 [<c043669c>] br_pass_frame_up+0x7c/0x80
 [<c0436600>] br_pass_frame_up_finish+0x0/0x20
 [<c043674c>] br_handle_frame_finish+0xac/0x130
 [<c04369e4>] br_handle_frame+0x214/0x270
 [<c04366a0>] br_handle_frame_finish+0x0/0x130
 [<c03e2e44>] kfree_skbmem+0x24/0x30
 [<c03e9a3d>] netif_receive_skb+0x1bd/0x270
 [<c03e9ba9>] process_backlog+0xb9/0x190
 [<c0124d5e>] tasklet_action+0x6e/0x120
 [<c0124965>] __do_softirq+0xc5/0xf0
 [<c0124a1b>] do_softirq+0x8b/0x90
 [<c0124ae5>] irq_exit+0x35/0x40
 [<c010e822>] do_IRQ+0x22/0x30
 [<c0105530>] evtchn_do_upcall+0x70/0xa0
 [<c0109fb8>] hypervisor_callback+0x2c/0x34
 [<c01079e8>] xen_idle+0x38/0x90
 [<c0107a83>] cpu_idle+0x43/0x50
 [<c0104023>] _stext+0x23/0x40
 [<c0104080>] init+0x0/0x110
 [<c058288d>] start_kernel+0x1ad/0x200
 [<c05823a0>] unknown_bootoption+0x0/0x210
Kernel panic - not syncing: BUG!
 (XEN) Domain 0 shutdown: rebooting machine.

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