Re: Fatal trap on CURRENT

Denis Shaposhnikov wrote:
> Hi!
> 
> I have CURRENT from Mar 30. And I've got a trap (see below). Something 
> wrong with TCP?

Nothing known.  Please provide some further debugging to the sbsndptr()
line.

It'd also be helpful if you could run your kernel with INVARIANTS compiled
in.

-- 
Andre

> Fatal trap 12: page fault while in kernel mode
> cpuid = 1; apic id = 06
> fault virtual address   = 0xc
> fault code              = supervisor read, page not present
> instruction pointer     = 0x20:0xc0517f6e
> stack pointer           = 0x28:0xe4f08924
> frame pointer           = 0x28:0xe4f0892c
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                         = DPL 0, pres 1, def32 1, gran 1
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 22 (em0 taskq)
> trap number             = 12
> panic: page fault
> cpuid = 1
> Uptime: 2d12h44m47s
> Physical memory: 2043 MB
> Dumping 292 MB:
> telnet> send brk
> KDB: enter: Line break on console
> [thread pid 22 tid 100022 ]
> Stopped at      kdb_enter+0x2b: nop
> db> where
> Tracing pid 22 tid 100022 td 0xc498e6c0
> kdb_enter(c0649fe5) at kdb_enter+0x2b
> siointr1(c49e5800) at siointr1+0xce
> siointr(c49e5800) at siointr+0x5a
> intr_execute_handlers(c48efccc,e4f08530,4,e4f08594,c05fd764,...) at 
> intr_execute
> _handlers+0xd9
> lapic_handle_intr(36,e4f08530) at lapic_handle_intr+0x2f
> Xapic_isr1() at Xapic_isr1+0x34
> --- interrupt, eip = 0xc0615eb2, esp = 0xe4f08570, ebp = 0xe4f08594 ---
> DELAY(a) at DELAY+0x92
> ata_start(c49dc400) at ata_start+0x2ff
> ata_queue_request(c8fb2900,c4a0d000,c4b74980,10000,0,...) at 
> ata_queue_request+0x26f
> ad_strategy(e4f085f4,e4f085f4,84,202,0,...) at ad_strategy+0x1c1
> ad_dump(c4b74980,c0c22000,0,2e5b4c00,8,...) at ad_dump+0xa4
> blk_flush(c069cea0) at blk_flush+0x33
> blk_write(c069cea0,0,15a4000,0) at blk_write+0x1fd
> minidumpsys(c069cea0,3c,0,4,e4f0879c,...) at minidumpsys+0x50f
> dumpsys(c069cea0,e4f087dc,c04d4d46,0,c4b7478c,...) at dumpsys+0x1a
> doadump(0,c4b7478c,e4f087fc,c4934c8c,c498e6c0,...) at doadump+0x42
> boot(104,104,c498e6c0,28,e4f088e4,...) at boot+0x4e2
> panic(c062f23f,c064ede3,0,0,fffff,...) at panic+0x1ab
> trap_fatal(e4f088e4,c,c498e6c0,c069b5c0,0,...) at trap_fatal+0x2de
> trap_pfault(e4f088e4,0,c) at trap_pfault+0x1c3
> trap(e4f088e4) at trap+0x396
> calltrap() at calltrap+0x6
> --- trap 0xc, eip = 0xc0517f6e, esp = 0xe4f08924, ebp = 0xe4f0892c ---
> sbsndptr(cac80634,1651,5b4,e4f0898c,80000,...) at sbsndptr+0x56
> tcp_output(c81da000,1a,0,1,2238,...) at tcp_output+0xb1c
> tcp_do_segment(ca02bd00,c883a040,cac80570,c81da000,28,0) at 
> tcp_do_segment+0x105f
> tcp_input(ca02bd00,14,20,1,e4f08b84,...) at tcp_input+0xb5d
> ip_input(ca02bd00) at ip_input+0x60a
> netisr_dispatch(2,ca02bd00,2ff08bb8,2,c50b1340,...) at netisr_dispatch+0x48
> gre_input(ca02bd00,14,ca02bd00,c4b9ac00) at gre_input+0x144
> encap4_input(ca02bd00,14,e4f08c14,246,c4964e80,...) at encap4_input+0x142
> ip_input(ca02bd00) at ip_input+0x60a
> netisr_dispatch(2,ca02bd00,e4f08c74,c49ca800,ca020800,...) at 
> netisr_dispatch+0x48
> ether_demux(c49ca800,ca02bd00,c497b800,ca02bd00,5d,...) at 
> ether_demux+0x185
> ether_input(c49ca800,ca02bd00,c0606e00,40e7278a,22d1f,...) at 
> ether_input+0x310
> em_handle_rxtx(c497b800,1) at em_handle_rxtx+0x1d2
> taskqueue_run(c4983c00) at taskqueue_run+0x137
> taskqueue_thread_loop(c497ba14,e4f08d38) at taskqueue_thread_loop+0x8e
> fork_exit(c04fb930,c497ba14,e4f08d38) at fork_exit+0x7b
> fork_trampoline() at fork_trampoline+0x8
> --- trap 0, eip = 0, esp = 0xe4f08d70, ebp = 0 ---
>