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

[Gleb Smirnoff]

On Fri, Feb 20, 2015 at 09:34:02AM +0100, Roger Pau Monné wrote:
R> I've tried the attached patch and now I get a different panic:
R> 
R> [...]
R> xn0: <Virtual Network Interface> at device/vif/0 on xenbusb_front0
R> xn0: Ethernet address: 00:16:3e:0a:80:c2
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> xbd0:
R> 
R> Fatal trap 9: general protection fault while in kernel mode
R> cpuid = 0; apic id = 00
R> instruction pointer	= 0x20:0xffffffff80b0c60b
R> stack pointer	        = 0x28:0xfffffe0096c18960
R> frame pointer	        = 0x28:0xfffffe0096c18a30
R> code segment		= base 0x0, limit 0xfffff, type 0x1b
R> 			= DPL 0, pres 1, long 1, def32 0, gran 1
R> processor eflags	= interrupt enabled, resume, IOPL = 0
R> current process		= 12 (irq778: xn0)
R> [ thread pid 12 tid 100052 ]
R> Stopped at      tcp_lro_rx+0x1b:        movw    0xc(%rbx),%r15w
R> db> bt
R> Tracing pid 12 tid 100052 td 0xfffff80002da2940
R> tcp_lro_rx() at tcp_lro_rx+0x1b/frame 0xfffffe0096c18a30
R> xn_intr() at xn_intr+0xa12/frame 0xfffffe0096c18b30
R> intr_event_execute_handlers() at intr_event_execute_handlers+0xe1/frame 0xfffffe0096c18b70
R> ithread_loop() at ithread_loop+0xac/frame 0xfffffe0096c18bb0
R> fork_exit() at fork_exit+0x84/frame 0xfffffe0096c18bf0
R> fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0096c18bf0
R> --- trap 0, rip = 0, rsp = 0xfffffe0096c18cb0, rbp = 0 ---
R> db>
R> 
R> addr2line however seems to be unable to resolve the IP address
R> to a line number:
R> 
R> # addr2line -e /boot/kernel/kernel ffffffff80b0c60b
R> ??:0

Do you have coredump? If yes, can you please show within frame
of xn_intr():

p rxq
p *m

-- 
Totus tuus, Glebius.