Hello!
>From time to time, my test systems don't boot correctly and spew the
following oops in futex_init():
calling init_timer_list_procfs+0x0/0x40 @ 1
initcall init_timer_list_procfs+0x0/0x40 returned 0 after 29 usecs
calling futex_init+0x0/0xac @ 1
Reserved instruction in kernel code[#1]:
Cpu 0
$ 0 : 00000000 10003c00 00000000 00000001
$ 4 : fffffff2 00000000 32e02014 00000000
$ 8 : 00000000 00000000 c4653600 000000cd
$12 : 3b9aca00 000186a0 870ce3f0 0000000d
$16 : 32e02014 00000000 00000000 8042f0dc
$20 : 00000000 00000000 00000000 00000000
$24 : 00000005 80243a3c
$28 : 87020000 87021f30 00000000 80100460
Hi : 00000000
Lo : 00000000
epc : 8042f0f8 futex_init+0x1c/0xac
Not tainted
ra : 80100460 _stext+0x60/0x1c8
Status: 10003c03 KERNEL EXL IE
Cause : 00808028
PrId : 04030202 (Au1250)
Modules linked in:
Process swapper (pid: 1, threadinfo=87020000, task=87018000, tls=00000000)
Stack : 00000000 8042f0dc 00000001 00002543 0000001d 00000000 87021f00 8014f014
0000000e 00000000 8702a900 87002000 00003137 00000000 00000000 801ba18c
8041e7a0 000000e0 80410000 00000000 00000000 8014f09c 32e02014 00000000
80448360 804484f4 00000000 00000000 00000000 80428304 00000000 00000000
00000000 00000000 87020000 00000000 00000000 80106ea4 10003c03 00000000
...
Call Trace:
[<8042f0f8>] futex_init+0x1c/0xac
[<80100460>] _stext+0x60/0x1c8
[<80428304>] kernel_init+0x98/0x104
[<80106ea4>] kernel_thread_helper+0x10/0x18
Code: 30420004 14400008 2404fff2 <c0440000> 14800005 00000000 00000821 e0410000 1020fffa
Disabling lock debugging due to kernel taint
note: swapper[1] exited with preempt_count 1
Kernel panic - not syncing: Attempted to kill init!
Disassembly of futex_init():
(gdb) disass 0x8042f0f8
Dump of assembler code for function futex_init:
0x8042f0dc <futex_init+0>: lw v1,20(gp)
0x8042f0e0 <futex_init+4>: addiu v1,v1,1
0x8042f0e4 <futex_init+8>: sw v1,20(gp)
0x8042f0e8 <futex_init+12>: lw v0,24(gp)
0x8042f0ec <futex_init+16>: andi v0,v0,0x4
0x8042f0f0 <futex_init+20>: bnez v0,0x8042f114 <futex_init+56>
0x8042f0f4 <futex_init+24>: li a0,-14
0x8042f0f8 <futex_init+28>: ll a0,0(v0)
0x8042f0fc <futex_init+32>: bnez a0,0x8042f114 <futex_init+56>
0x8042f100 <futex_init+36>: nop
0x8042f104 <futex_init+40>: move at,zero
0x8042f108 <futex_init+44>: sc at,0(v0)
0x8042f10c <futex_init+48>: beqz at,0x8042f0f8 <futex_init+28>
0x8042f110 <futex_init+52>: nop
0x8042f114 <futex_init+56>: lw v1,20(gp)
0x8042f118 <futex_init+60>: addiu v1,v1,-1
0x8042f11c <futex_init+64>: sw v1,20(gp)
0x8042f120 <futex_init+68>: li v0,-14
0x8042f124 <futex_init+72>: beq a0,v0,0x8042f144 <futex_init+104>
0x8042f128 <futex_init+76>: li v1,1
0x8042f12c <futex_init+80>: lui v0,0x8049
0x8042f130 <futex_init+84>: addiu a0,v0,26536
0x8042f134 <futex_init+88>: move a1,zero
0x8042f138 <futex_init+92>: move a2,a0
0x8042f13c <futex_init+96>: j 0x8042f150 <futex_init+116>
0x8042f140 <futex_init+100>: li a3,256
0x8042f144 <futex_init+104>: lui v0,0x8049
0x8042f148 <futex_init+108>: j 0x8042f12c <futex_init+80>
0x8042f14c <futex_init+112>: sw v1,26528(v0)
0x8042f150 <futex_init+116>: sll v1,a1,0x4
0x8042f154 <futex_init+120>: sll v0,a1,0x4
0x8042f158 <futex_init+124>: addiu v1,v1,8
0x8042f15c <futex_init+128>: addu v0,a2,v0
0x8042f160 <futex_init+132>: addu v1,a2,v1
0x8042f164 <futex_init+136>: addiu a1,a1,1
0x8042f168 <futex_init+140>: sw v0,4(a0)
0x8042f16c <futex_init+144>: sw v1,12(a0)
0x8042f170 <futex_init+148>: sw v0,0(a0)
0x8042f174 <futex_init+152>: sw v1,8(a0)
0x8042f178 <futex_init+156>: bne a1,a3,0x8042f150 <futex_init+116>
0x8042f17c <futex_init+160>: addiu a0,a0,16
0x8042f180 <futex_init+164>: jr ra
0x8042f184 <futex_init+168>: move v0,zero
End of assembler dump.
Could this be a compiler/toolchain issue?
(gcc-4.3.3, binutils-2.19.1)
Thanks!
Manuel Lauss
