Re: kldunload Ratal trap 12: page fault

[Galen Sampson <galen_sampson@xxxxxxxxx>]

Hello All,

I was the poster of this on -stable.  No one replied to me after that post.  I
still have the kernel.debug and the vmcore.

mercury:/devel/freebsd/crash> gdb -k kernel.debug vmcore.6
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This GDB was configured as "i386-unknown-freebsd"...Deprecated bfd_read called
at
/devel/freebsd/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c
line 2627 in elfstab_build_psymtabs
Deprecated bfd_read called at
/devel/freebsd/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c
line 933 in fill_symbuf

IdlePTD at phsyical address 0x0032b000
initial pcb at physical address 0x0029fd20
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0xc15e20b8
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc15e20b8
stack pointer           = 0x10:0xcb13deb0
frame pointer           = 0x10:0xcb13dec4
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         = 95096 (kldunload)
interrupt mask          = none
trap number             = 12
panic: page fault

syncing disks... 33 8 8
done
Uptime: 3h48m3s

dumping to dev #ad/0x20001, offset 917504
dump ata0: resetting devices .. done
192 191 190 189 188 187 186 185 184 183 182 181 180 179 178 177 176 175 174 173
172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157 156 155 154 153
152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133
132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113
112 111 110 109 108 107 106 105 104 103 102 101 100 [CTRL-C to abort] [CTRL-C
to abort] [CTRL-C to abort] 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83
82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 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  dumpsys () at /devel/freebsd/src/sys/kern/kern_shutdown.c:487

warning: Source file is more recent than executable.

487             if (dumping++) {
(kgdb) where
#0  dumpsys () at /devel/freebsd/src/sys/kern/kern_shutdown.c:487
#1  0xc01513b0 in boot (howto=256)
    at /devel/freebsd/src/sys/kern/kern_shutdown.c:316
#2  0xc01517e4 in poweroff_wait (junk=0xc027610c, howto=-1071162321)
    at /devel/freebsd/src/sys/kern/kern_shutdown.c:595
#3  0xc0240ec7 in trap_fatal (frame=0xcb13de70, eva=3244171448)
    at /devel/freebsd/src/sys/i386/i386/trap.c:974
#4  0xc0240b89 in trap_pfault (frame=0xcb13de70, usermode=0, eva=3244171448)
    at /devel/freebsd/src/sys/i386/i386/trap.c:867
#5  0xc024076b in trap (frame={tf_fs = -887947248, tf_es = -1072431088,
      tf_ds = -1055653872, tf_edi = -1050176336, tf_esi = -1050176332,
      tf_ebp = -887890236, tf_isp = -887890276, tf_ebx = 0,
      tf_edx = -1050176796, tf_ecx = -1050176328, tf_eax = -1050795848,
      tf_trapno = 12, tf_err = 0, tf_eip = -1050795848, tf_cs = 8,
      tf_eflags = 66054, tf_esp = -1072427304, tf_ss = -1050176896})
    at /devel/freebsd/src/sys/i386/i386/trap.c:466
#6  0xc15e20b8 in ?? ()
#7  0xc0141358 in linker_file_unload (file=0xc114d100)
    at /devel/freebsd/src/sys/kern/kern_linker.c:434
#8  0xc01413b0 in linker_file_unload (file=0xc14e2a80)
    at /devel/freebsd/src/sys/kern/kern_linker.c:442
#9  0xc01413b0 in linker_file_unload (file=0xc1171b00)
    at /devel/freebsd/src/sys/kern/kern_linker.c:442
---Type <return> to continue, or q <return> to quit---
#10 0xc01417b5 in kldunload (p=0xcb0a1260, uap=0xcb13df80)
    at /devel/freebsd/src/sys/kern/kern_linker.c:713
#11 0xc0241181 in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47,
      tf_edi = 2, tf_esi = -1077937810, tf_ebp = -1077938112,
      tf_isp = -887889964, tf_ebx = 0, tf_edx = 0, tf_ecx = 0, tf_eax = 305,
      tf_trapno = 12, tf_err = 2, tf_eip = 134514416, tf_cs = 31,
      tf_eflags = 647, tf_esp = -1077939212, tf_ss = 47})
    at /devel/freebsd/src/sys/i386/i386/trap.c:1175
#12 0xc0234c05 in Xint0x80_syscall ()
#13 0x804813e in ?? ()

Let me know what else you need.

regards,
Galen Sampson

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