Re: 2.6.10-rc1-mm3

Con Kolivas
2004-11-05T10:57:25Z

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It's life Jim but not as we know it...

This happened during modprobe of alsa modules. Keyboard still alive,
everything else dead; not even sysrq would do anything, netconsole had
no output, luckily this made it to syslog:

Nov 5 21:39:27 pc kernel: Unable to handle kernel paging request at
virtual address f8c00000
Nov 5 21:39:27 pc kernel: printing eip:
Nov 5 21:39:27 pc kernel: c02bddce
Nov 5 21:39:27 pc kernel: *pde = 00000000
Nov 5 21:39:27 pc kernel: Oops: 0002 [#1]
Nov 5 21:39:27 pc kernel: PREEMPT SMP
Nov 5 21:39:27 pc kernel: Modules linked in: soundcore intel_agp
agpgart bttv video_buf firmware_class i2c_algo_bit btcx_risc i2c_core us
blp ehci_hcd uhci_hcd
Nov 5 21:39:27 pc kernel: CPU: 0
Nov 5 21:39:27 pc kernel: EIP: 0060:[<c02bddce>] Not tainted VLI
Nov 5 21:39:27 pc kernel: EFLAGS: 00010246 (2.6.10-rc1-mm3)
Nov 5 21:39:27 pc kernel: EIP is at __lock_text_end+0xbe3/0x119a
Nov 5 21:39:27 pc kernel: eax: 00000000 ebx: 000a151a ecx: 0002851a
edx: b7c82008
Nov 5 21:39:27 pc kernel: esi: b7cfb008 edi: f8c00000 ebp: f6c1c000
esp: f6c1cf14
Nov 5 21:39:27 pc kernel: ds: 007b es: 007b ss: 0068
Nov 5 21:39:27 pc kernel: Process modprobe (pid: 955,
threadinfo=f6c1c000 task=f76ef530)
Nov 5 21:39:27 pc kernel: Stack: 00000002 0002851a f8b87000 b7c82008
c01d2a10 b7c82008 000a151a 08049410
Nov 5 21:39:27 pc kernel: c012f697 00000000 00000001 00008000
00000000 00000000 c1707400 f6a41580
Nov 5 21:39:27 pc kernel: f58c4ac4 f58c4ac4 00000046 00000000
f6a41580 00000246 00000246 00000000
Nov 5 21:39:27 pc kernel: Call Trace:
Nov 5 21:39:27 pc kernel: [<c01d2a10>] copy_from_user+0x29/0x4d
Nov 5 21:39:27 pc kernel: [<c012f697>] load_module+0x73/0x916
Nov 5 21:39:27 pc kernel: [<c0142007>] do_munmap+0x10e/0x11c
Nov 5 21:39:27 pc kernel: [<c012ff87>] sys_init_module+0x4d/0x207
Nov 5 21:39:27 pc kernel: [<c0104b31>] sysenter_past_esp+0x52/0x71
Nov 5 21:39:27 pc kernel: Code: 88 00 51 50 31 c0 f3 aa 58 59 e9 75 4b
f1 ff 01 c1 e9 a9 4b f1 ff 8d 4c 88 00 e9 a0 4b f1 ff 01 c1 eb 04
8d 4c 88 00 51 50 31 c0 <f3> aa 58 59 e9 d1 4b f1 ff ba f2 ff ff ff e9
60 96 f1 ff b9 f2

*__lock_text_end+0xbe3: hidden in inlined functions

*copy_from_user+0x29: hidden in inlined functions

*load_module+0x73:
0xc012f697 is in load_module (kernel/module.c:1457).
1452 /* Suck in entire file: we'll want most of it. */
1453 /* vmalloc barfs on "unusual" numbers. Check here */
1454 if (len > 64 * 1024 * 1024 || (hdr = vmalloc(len)) == NULL)
1455 return ERR_PTR(-ENOMEM);
1456 if (copy_from_user(hdr, umod, len) != 0) {
1457 err = -EFAULT;

*do_munmap+0x10e:
0xc0142007 is in do_munmap (mm/mmap.c:1753).
1748 spin_unlock(&mm->page_table_lock);
1749
1750 /* Fix up all other VM information */
1751 unmap_vma_list(mm, mpnt);
1752
1753 return 0;

*sys_init_module+0x4d: inlined

*sysenter_past_esp+0x52:
0xc0104b31 is at arch/i386/kernel/entry.S:243.
238 testb
$(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),TI_flags(%ebp)
239 jnz syscall_trace_entry
240 cmpl $(nr_syscalls), %eax
241 jae syscall_badsys
242 call *sys_call_table(,%eax,4)
243 movl %eax,EAX(%esp)

Con

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