linuxolator: fatal trap 12 when compiling libX11

[Scot Hetzel]

On 1/17/07, Divacky Roman <xdivac02 at stud.fit.vutbr.cz> wrote:
> scot, please test this patch and report me what it prints out
> just before the panic, btw.. your machine is SMP?
>
The system has only one processor.

$ dmesg | grep -i cpu
CPU: AMD Turion(tm) 64 Mobile Technology ML-37 (1994.21-MHz K8-class CPU)
cpu0: <ACPI CPU> on acpi0
powernow0: <PowerNow! K8> on cpu0

# kgdb -n 3 kernel.debug
:
Unread portion of the kernel message buffer:
before: 0xffffff002ea7b9f0
after1: 0xffffff002ea7b9f0
after2: 0xffffff002ea7b9f0
before: 0xffffff002ea7b8c0
after1: 0xffffff002ea7b8c0
after2: 0xffffff002ea7b8c0
before: 0xffffff002ea7b8e0
after1: 0xffffff002ea7b8e0
after2: 0xffffff002ea7b8e0
before: 0xffffff002ea7b950
after1: 0xffffff002ea7b950
after2: 0xffffff002ea7b950
before: 0xffffff002ea7b9b0
after1: 0xffffff002ea7b9b0
after2: 0xffffff002ea7b9b0
before: 0xffffff002ea7b540
after1: 0xffffff002ea7b540
after2: 0xffffff002ea7b540
before: 0xffffff002ea7b560
after1: 0xffffff002ea7b560
after2: 0xffffff002ea7b560
before: 0xffffff002ea7b500
after1: 0xffffff002ea7b500
after2: 0xdeadc0dedeadc0de


Fatal trap 9: general protection fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer     = 0x8:0xffffffffa2cb3b65
stack pointer           = 0x10:0xffffffffa3210ad0
frame pointer           = 0x10:0xffffffffa3210b10
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 1281 (bash)
panic: from debugger
cpuid = 0
Uptime: 4m6s
Physical memory: 1008 MB
Dumping 115 MB: 100 84 68 52 36 20 4

(kgdb) list *0xffffffffa2cb3b65
0xffffffffa2cb3b65 is in linux_proc_init
(/usr/src/7x/sys-orig/modules/linux/../../compat/linux/linux_emul.c:141).
136                     printf("before: %p\n", em->shared);
137                     EMUL_UNLOCK(&emul_lock);
138                     printf("after1: %p\n", em->shared);
139                     EMUL_SHARED_WLOCK(&emul_shared_lock);
140                     printf("after2: %p\n", em->shared);
141                     LIST_INSERT_HEAD(&em->shared->threads, em, threads);
142                     EMUL_SHARED_WUNLOCK(&emul_shared_lock);
143
144                     p = pfind(child);
145                     /* we might have a sleeping linux_schedtail */

On 1/17/07, Divacky Roman <xdivac02 at stud.fit.vutbr.cz> wrote:
> also please show me the "flags" arugment to linux_proc_init
>

(kgdb) p flags
$1 = 0x0
(kgdb) p child
$2 = 0x514
(kgdb) p *td
$3 = {
  td_proc = 0xffffff0023bf9380,
  td_plist = {
    tqe_next = 0x0,
    tqe_prev = 0xffffff0023bf9390
  },
  td_slpq = {
    tqe_next = 0x0,
    tqe_prev = 0xffffff0029064180
  },
  td_lockq = {
    tqe_next = 0x0,
    tqe_prev = 0xffffffffa320b580
  },
  td_selq = {
    tqh_first = 0x0,
    tqh_last = 0x0
  },
  td_sleepqueue = 0xffffff0029064180,
  td_turnstile = 0xffffff0029064300,
  td_umtxq = 0xffffff0029064400,
  td_tid = 0x18709,
  td_sigqueue = {
    sq_signals = {
      __bits = {0x0, 0x0, 0x0, 0x0}
    },
    sq_kill = {
      __bits = {0x0, 0x0, 0x0, 0x0}
    },
    sq_list = {
      tqh_first = 0x0,
      tqh_last = 0xffffff0025766088
    },
    sq_proc = 0xffffff0023bf9380,
    sq_flags = 0x1
  },
  td_flags = 0x5000002,
  td_inhibitors = 0x0,
  td_pflags = 0x0,
  td_dupfd = 0x0,
  td_sqqueue = 0x0,
  td_wchan = 0x0,
  td_wmesg = 0x0,
  td_lastcpu = 0x0,
  td_oncpu = 0x0,
  td_owepreempt = 0x0,
  td_locks = 0x1,
  td_tsqueue = 0x0,
  td_blocked = 0x0,
  td_lockname = 0x0,
  td_contested = {
    lh_first = 0x0
  },
  td_sleeplocks = 0xffffffff809ed7e8,
  td_intr_nesting_level = 0x0,
  td_pinned = 0x1,
  td_mailbox = 0x0,
  td_ucred = 0xffffff0028276300,
  td_standin = 0x0,
  td_upcall = 0x0,
  td_estcpu = 0x127,
  td_slptime = 0x0,
  td_pticks = 0x0,
  td_sticks = 0x0,
  td_iticks = 0x0,
  td_uticks = 0x0,
  td_uuticks = 0x0,
  td_usticks = 0x0,
  td_intrval = 0x0,
---Type <return> to continue, or q <return> to quit---
  td_oldsigmask = {
    __bits = {0x0, 0x0, 0x0, 0x0}
  },
  td_sigmask = {
    __bits = {0x80080002, 0x0, 0x0, 0x0}
  },
  td_generation = 0x3d,
  td_sigstk = {
    ss_sp = 0x0,
    ss_size = 0x0,
    ss_flags = 0x4
  },
  td_kflags = 0x0,
  td_xsig = 0x0,
  td_profil_addr = 0x0,
  td_profil_ticks = 0x0,
  td_name = '\0' <repeats 19 times>,
  td_base_pri = 0xbe,
  td_priority = 0xbe,
  td_pri_class = 0x3,
  td_user_pri = 0xbe,
  td_base_user_pri = 0xbe,
  td_pcb = 0xffffffffa3210d50,
  td_state = TDS_RUNNING,
  td_retval = {0x514, 0x0},
  td_slpcallout = {
    c_links = {
      sle = {
        sle_next = 0x0
      },
      tqe = {
        tqe_next = 0x0,
        tqe_prev = 0x0
      }
    },
    c_time = 0x0,
    c_arg = 0x0,
    c_func = 0,
    c_mtx = 0x0,
    c_flags = 0x10
  },
  td_frame = 0xffffffffa3210c80,
  td_kstack_obj = 0xffffff0025775bb8,
  td_kstack = 0xffffffffa320d000,
  td_kstack_pages = 0x4,
  td_altkstack_obj = 0x0,
  td_altkstack = 0x0,
  td_altkstack_pages = 0x0,
  td_critnest = 0x0,
  td_md = {
    md_spinlock_count = 0x0,
    md_saved_flags = 0x46
  },
  td_sched = 0xffffff0025766260,
  td_ar = 0x0
}

Scot
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