Stephen Hemminger <[email protected]> wrote:
>
> [ 125.653485] <1>Fixing recursive fault but reboot is needed!
> [ 125.653620] ----------- [cut here ] --------- [please bite here ] ---------
> [ 125.653622] Kernel BUG at mm/mmap.c:1956
> [ 125.653624] invalid operand: 0000 [727] SMP
> [ 125.653625] CPU 0
> [ 125.653627] Modules linked in:
> [ 125.653629] Pid: 746, comm: hotplug Not tainted 2.6.15-rc3 #1
> [ 125.653631] RIP: 0010:[<ffffffff8016cecb>] <ffffffff8016cecb>{exit_mmap+235}
> [ 125.653636] RSP: 0018:ffff81007ebcfeb8 EFLAGS: 00010202
> [ 125.653639] RAX: 0000000000000000 RBX: ffff810002c0e3e0 RCX: 00000000000005b4
> [ 125.653642] RDX: 000000000000000f RSI: ffff81007fc2ead8 RDI: ffff81007ff5ca80
> [ 125.653645] RBP: 0000000000000000 R08: ffff81007ff2c920 R09: 0000000000000000
> [ 125.653647] R10: 0000000000000000 R11: 0000000000000246 R12: ffff81007eb785c0
> [ 125.653649] R13: 0000000000000001 R14: 0000000000000100 R15: 0000000000000000
> [ 125.653653] FS: 0000000000587850(0000) GS:ffffffff805c6800(0000) knlGS:0000000000000000
> [ 125.653655] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 125.653658] CR2: 000000000040a9b0 CR3: 0000000000101000 CR4: 00000000000006e0
> [ 125.653661] Process hotplug (pid: 746, threadinfo ffff81007ebce000, task ffff81007ebcafa0)
> [ 125.653663] Stack: 000000000000003c ffff810002c0e3e0 ffff81007eb785c0 ffff81007eb78638
> [ 125.653668] ffff81007ebcafa0 ffffffff80130d61 0000000000000100 0000000000000100
> [ 125.653672] ffff81007ebcb5e4 ffffffff80135bb2
> [ 125.653675] Call Trace:<ffffffff80130d61>{mmput+49} <ffffffff80135bb2>{do_exit+578}
> [ 125.653682] <ffffffff8024f961>{__up_write+49} <ffffffff801366b8>{do_group_exit+248}
> [ 125.653687] <ffffffff8010dcee>{system_call+126}
> [ 125.653691]
> [ 125.653692] Code: 0f 0b 68 de 7e 3e 80 c2 a4 07 48 83 c4 10 5b 5d 41 5c c3 66
> [ 125.653700] RIP <ffffffff8016cecb>{exit_mmap+235} RSP <ffff81007ebcfeb8>
> [ 125.653704] <1>Fixing recursive fault but reboot is needed!
> [ 125.653841] ----------- [cut here ] --------- [please bite here ] ---------
> [ 125.653843] Kernel BUG at mm/mmap.c:1956
That's
BUG_ON(mm->nr_ptes > (FIRST_USER_ADDRESS+PMD_SIZE-1)>>PMD_SHIFT);
It's hard to see how this is caused by a USB patch.
Are you using the very latest Linus tree? You should...
This might help, dunno.
diff -puN mm/memory.c~mm-get_locked_pte-fix mm/memory.c
--- 25/mm/memory.c~mm-get_locked_pte-fix 2005-11-29 16:05:05.000000000 -0800
+++ 25-akpm/mm/memory.c 2005-11-29 16:05:24.000000000 -0800
@@ -1151,7 +1151,7 @@ pte_t *get_locked_pte(struct mm_struct *
pgd_t * pgd = pgd_offset(mm, addr);
pud_t * pud = pud_alloc(mm, pgd, addr);
if (pud) {
- pmd_t * pmd = pmd_alloc(mm, pgd, addr);
+ pmd_t * pmd = pmd_alloc(mm, pud, addr);
if (pmd)
return pte_alloc_map_lock(mm, pmd, addr, ptl);
}
_
-
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