Date: Fri, 7 May 1999 04:12:25 +0700 (NSS) From: Max Khon <fjoe@iclub.nsu.ru> To: freebsd-hackers@freebsd.org Subject: Can someone tell me what caused this panic? Message-ID: <Pine.BSF.4.05.9905070409560.4297-100000@iclub.nsu.ru>
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hi, there!
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GDB 4.16 (i386-unknown-freebsd),
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IdlePTD 3612672
initial pcb at 2f6d7c
panicstr: from debugger
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x6c05b
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc0179a40
stack pointer = 0x10:0xc45a9d4c
frame pointer = 0x10:0xc45a9d58
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 = 1276 (ftpd)
interrupt mask = net tty
panic: from debugger
panic: from debugger
dumping to dev 40001, offset 142128
dump 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
---
#0 boot (howto=260) at ../../kern/kern_shutdown.c:285
285 dumppcb.pcb_cr3 = rcr3();
(kgdb) #0 boot (howto=260) at ../../kern/kern_shutdown.c:285
#1 0xc0162df5 in panic (fmt=0xc029b13c "from debugger")
at ../../kern/kern_shutdown.c:446
#2 0xc012b479 in db_panic (addr=-1072195008, have_addr=0, count=-1,
modif=0xc45a9bd0 "") at ../../ddb/db_command.c:432
#3 0xc012b419 in db_command (last_cmdp=0xc02dad90, cmd_table=0xc02dabf0,
aux_cmd_tablep=0xc02f4538) at ../../ddb/db_command.c:332
#4 0xc012b4de in db_command_loop () at ../../ddb/db_command.c:454
#5 0xc012d82f in db_trap (type=12, code=0) at ../../ddb/db_trap.c:71
#6 0xc024df1e in kdb_trap (type=12, code=0, regs=0xc45a9d10)
at ../../i386/i386/db_interface.c:157
#7 0xc025bc78 in trap_fatal (frame=0xc45a9d10, eva=442459)
at ../../i386/i386/trap.c:937
#8 0xc025b957 in trap_pfault (frame=0xc45a9d10, usermode=0, eva=442459)
at ../../i386/i386/trap.c:835
#9 0xc025b58a in trap (frame={tf_es = 16, tf_ds = 16, tf_edi = -1073610752,
tf_esi = -1067785984, tf_ebp = -1000694440, tf_isp = -1000694472,
tf_ebx = 442459, tf_edx = -1073278286, tf_ecx = 492,
tf_eax = -1073610752, tf_trapno = 12, tf_err = 0, tf_eip = -1072195008,
tf_cs = 8, tf_eflags = 66050, tf_esp = -1067785984, tf_ss = 2})
at ../../i386/i386/trap.c:437
#10 0xc0179a40 in m_prepend (m=0xc05ae100, len=6, how=1)
at ../../kern/uipc_mbuf.c:394
#11 0xc019eb66 in arc_output (ifp=0xc030e2dc, m0=0xc05b6300, dst=0xc4449db0,
rt0=0xc0874a00) at ../../net/if_arcsubr.c:295
#12 0xc01b0ee4 in ip_output (m0=0xc05b6300, opt=0x0, ro=0xc4449dac, flags=0,
imo=0x0) at ../../netinet/ip_output.c:608
#13 0xc01b55f9 in tcp_output (tp=0xc4449de0) at ../../netinet/tcp_output.c:696
#14 0xc01b6989 in tcp_usr_send (so=0xc4407a00, flags=4, m=0xc05b9500, nam=0x0,
control=0x0, p=0xc459ca40) at ../../netinet/tcp_usrreq.c:374
#15 0xc017b35a in sosend (so=0xc4407a00, addr=0x0, uio=0xc45a9f30,
top=0xc05b9500, control=0x0, flags=0, p=0xc459ca40)
at ../../kern/uipc_socket.c:539
#16 0xc0170c9c in soo_write (fp=0xc0a1e340, uio=0xc45a9f30, cred=0xc09ffb00)
at ../../kern/sys_socket.c:80
#17 0xc016dae6 in write (p=0xc459ca40, uap=0xc45a9f84)
at ../../kern/sys_generic.c:270
#18 0xc025bee7 in syscall (frame={tf_es = 39, tf_ds = 39, tf_edi = 672134044,
tf_esi = 6, tf_ebp = -1077948508, tf_isp = -1000693804, tf_ebx = 8192,
tf_edx = 8192, tf_ecx = 0, tf_eax = 4, tf_trapno = 7, tf_err = 2,
tf_eip = 671829748, tf_cs = 31, tf_eflags = 518, tf_esp = -1077948576,
tf_ss = 39}) at ../../i386/i386/trap.c:1100
#19 0xc024e86c in Xint0x80_syscall ()
#20 0x804b9c3 in ?? ()
#21 0x804ef70 in ?? ()
#22 0x804a83d in ?? ()
#23 0x8049f81 in ?? ()
(kgdb)
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--- ../../kern/uipc_mbuf.c:394 (m_prepend) ---
MGET(mn, how, m->m_type);
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/fjoe
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