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2.6.27-rc5 xen balloon driver warnings

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From: Rambaldi
Subject: 2.6.27-rc5 xen balloon driver warnings
Date: Friday, September 5, 2008 - 1:41 am

Hi,

when running the 2.6.27-rc5 kernel as 64 bits dumU I get the following warnings:


xen_balloon: Initialising balloon driver.
------------[ cut here ]------------
WARNING: at fs/sysfs/dir.c:463 sysfs_add_one+0x33/0x39()
sysfs: duplicate filename 'memory' can not be created
Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.27-rc5 #2

Call Trace:
  [<ffffffff80231c9c>] warn_slowpath+0xb4/0xdd
  [<ffffffff803311f8>] write_console+0xda/0x119
  [<ffffffff8020baf6>] xen_mc_flush+0x11c/0x15b
  [<ffffffff8032c0d8>] notify_update+0x2b/0x30
  [<ffffffff80330579>] vt_console_print+0x27b/0x288
  [<ffffffff802f0b6e>] idr_get_empty_slot+0x164/0x243
  [<ffffffff80274ad0>] __kmalloc+0x99/0xc6
  [<ffffffff8027456b>] kmem_cache_alloc+0x65/0x92
  [<ffffffff802b7a30>] sysfs_ilookup_test+0x0/0xf
  [<ffffffff802b7c2c>] sysfs_find_dirent+0x1b/0x2f
  [<ffffffff802b7ce2>] sysfs_add_one+0x33/0x39
  [<ffffffff802b8219>] create_dir+0x4f/0x87
  [<ffffffff802b8286>] sysfs_create_dir+0x35/0x4c
  [<ffffffff802f1959>] kobject_add_internal+0xd3/0x18e
  [<ffffffff8055dbb9>] balloon_init+0x0/0x1bd
  [<ffffffff802f1a38>] kset_register+0x24/0x3a
  [<ffffffff8055dc69>] balloon_init+0xb0/0x1bd
  [<ffffffff8020a042>] do_one_initcall+0x42/0x141
  [<ffffffff802b1b04>] create_proc_entry+0x73/0x8a
  [<ffffffff80254260>] register_irq_proc+0xa7/0xbf
  [<ffffffff805488d0>] kernel_init+0x116/0x16b
  [<ffffffff8020fd3b>] int_ret_from_sys_call+0x13/0x33
  [<ffffffff80210ef9>] child_rip+0xa/0x11
  [<ffffffff80210208>] retint_restore_args+0x5/0x20
  [<ffffffff8030caa0>] dummycon_dummy+0x0/0x3
  [<ffffffff8030caa0>] dummycon_dummy+0x0/0x3
  [<ffffffff80210eef>] child_rip+0x0/0x11

---[ end trace 4eaa2a86a8e2da22 ]---
kobject_add_internal failed for memory with -EEXIST, don't try to register things with the same name in the same directory.
Pid: 1, comm: swapper Tainted: G        W 2.6.27-rc5 #2

Call Trace:
  [<ffffffff802f19d5>] kobject_add_internal+0x14f/0x18e
  [<ffffffff8055dbb9>] balloon_init+0x0/0x1bd
  [<ffffffff802f1a38>] kset_register+0x24/0x3a
  [<ffffffff8055dc69>] balloon_init+0xb0/0x1bd
  [<ffffffff8020a042>] do_one_initcall+0x42/0x141
  [<ffffffff802b1b04>] create_proc_entry+0x73/0x8a
  [<ffffffff80254260>] register_irq_proc+0xa7/0xbf
  [<ffffffff805488d0>] kernel_init+0x116/0x16b
  [<ffffffff8020fd3b>] int_ret_from_sys_call+0x13/0x33
  [<ffffffff80210ef9>] child_rip+0xa/0x11
  [<ffffffff80210208>] retint_restore_args+0x5/0x20
  [<ffffffff8030caa0>] dummycon_dummy+0x0/0x3
  [<ffffffff8030caa0>] dummycon_dummy+0x0/0x3
  [<ffffffff80210eef>] child_rip+0x0/0x11

SCSI subsystem initialized

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Messages in current thread:
2.6.27-rc5 xen balloon driver warnings, Rambaldi, (Fri Sep 5, 1:41 am)
Re: 2.6.27-rc5 xen balloon driver warnings, Jeremy Fitzhardinge, (Sun Sep 7, 3:38 pm)
Re: 2.6.27-rc5 xen balloon driver warnings, Rambaldi, (Mon Sep 8, 8:37 am)
Re: 2.6.27-rc5 xen balloon driver warnings, Jeremy Fitzhardinge, (Mon Sep 8, 9:54 am)
Re: 2.6.27-rc5 xen balloon driver warnings, Ingo Molnar, (Mon Sep 8, 10:59 am)
Re: 2.6.27-rc5 xen balloon driver warnings, Ingo Molnar, (Mon Sep 8, 11:01 am)
Re: 2.6.27-rc5 xen balloon driver warnings, Jeremy Fitzhardinge, (Mon Sep 8, 11:13 am)
Re: 2.6.27-rc5 xen balloon driver warnings, Jeremy Fitzhardinge, (Mon Sep 8, 11:14 am)
Re: 2.6.27-rc5 xen balloon driver warnings, Ingo Molnar, (Mon Sep 8, 11:21 am)