svn commit: r278977 - in head/sys: dev/cxgb dev/cxgb/sys dev/cxgb/ulp/tom dev/xen/netfront sys

[Gleb Smirnoff]

On Thu, Feb 19, 2015 at 07:47:18PM +0100, Roger Pau Monné wrote:
R> El 19/02/15 a les 2.19, Gleb Smirnoff ha escrit:
R> > Author: glebius
R> > Date: Thu Feb 19 01:19:42 2015
R> > New Revision: 278977
R> > URL: https://svnweb.freebsd.org/changeset/base/278977
R> > 
R> > Log:
R> >   Provide a set of inline functions to manage simple mbuf(9) queues, based
R> >   on queue(3)'s STAILQ.  Utilize them in cxgb(4) and Xen, deleting home
R> >   grown implementations.
R> >   
R> >   Sponsored by:	Netflix
R> >   Sponsored by:	Nginx, Inc.
R> 
R> Have you tested this commit on Xen? I'm getting the following:
R> 
R> xn0: <Virtual Network Interface> at device/vif/0 on xenbusb_front0
R> xn0: Ethernet address: 00:16:3e:51:85:e3
R> xenbusb_back0: <Xen Backend Devices> on xenstore0
R> xbd0: Back-end specified ring-pages of 15 is not a power of 2. Limited to 8.
R> xn0: backend features: feature-sg feature-gso-tcp4
R> panic: no mbufs processed
R> cpuid = 0
R> KDB: stack backtrace:
R> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe007adc3920
R> vpanic() at vpanic+0x189/frame 0xfffffe007adc39a0
R> kassert_panic() at kassert_panic+0x132/frame 0xfffffe007adc3a10
R> network_alloc_rx_buffers() at network_alloc_rx_buffers+0x439/frame 0xfffffe007adc3ac0
R> network_connect() at network_connect+0xac1/frame 0xfffffe007adc3b50
R> netfront_backend_changed() at netfront_backend_changed+0xed/frame 0xfffffe007adc3b90
R> xenwatch_thread() at xenwatch_thread+0x1a2/frame 0xfffffe007adc3bb0
R> fork_exit() at fork_exit+0x84/frame 0xfffffe007adc3bf0
R> fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe007adc3bf0
R> --- trap 0, rip = 0, rsp = 0xfffffe007adc3cb0, rbp = 0 ---
R> KDB: enter: panic
R> [ thread pid 15 tid 100038 ]
R> Stopped at      kdb_enter+0x3e: movq    $0,kdb_why

Have you got the core? If yes, please do in the network_alloc_rx_buffers() frame:

p sc->xn_rx_batch

-- 
Totus tuus, Glebius.