[BUG] linux-next: Tree for August 21 - WARNING: at fs/sysfs/dir.c:465sysfs_add_one()
From: Kamalesh Babulal
Date: Thu Aug 21 2008 - 15:23:17 EST
Hi,
while booting up the next-20080821 kernel on x86 machine, warning shows up for sysfs_add_one
of acpi getting called twice
[ 3.070999] kobject: 'acpi' (f78b2130): kobject_add_internal: parent: 'module', set: 'module'
[ 3.095999] kobject: 'acpi' (f78b2130): kobject_uevent_env
[ 3.112571] kobject: 'acpi' (f78b2130): fill_kobj_path: path = '/module/acpi'
[ 3.134999] kobject: 'processor' (f7907ad0): kobject_add_internal: parent: 'module', set: 'module'
[ 3.161999] kobject: 'processor' (f7907ad0): kobject_uevent_env
[ 3.179847] kobject: 'processor' (f7907ad0): fill_kobj_path: path = '/module/processor'
[ 3.203999] kobject: 'thermal' (f7907b28): kobject_add_internal: parent: 'module', set: 'module'
[ 3.230731] kobject: 'thermal' (f7907b28): kobject_uevent_env
[ 3.247999] kobject: 'thermal' (f7907b28): fill_kobj_path: path = '/module/thermal'
[ 3.270999] kobject: 'acpi' (f7907b80): kobject_add_internal: parent: 'module', set: 'module'
[ 3.296886] ------------[ cut here ]------------
[ 3.310838] WARNING: at fs/sysfs/dir.c:465 sysfs_add_one+0x2a/0x36()
[ 3.329985] sysfs: duplicate filename 'acpi' can not be created
[ 3.347828] Modules linked in:
[ 3.356999] Pid: 1, comm: swapper Not tainted 2.6.27-rc3-next-20080821-autotest #1
[ 3.379835] [<c0425899>] warn_slowpath+0x4e/0x76
[ 3.394150] [<c04ff278>] ? trace_hardirqs_on_thunk+0xc/0x10
[ 3.411425] [<c0403a50>] ? restore_nocheck_notrace+0x0/0xe
[ 3.428751] [<c0425d52>] ? release_console_sem+0x194/0x1a7
[ 3.445750] [<c0488c7e>] ? ifind+0x83/0x8d
[ 3.458593] [<c0645a28>] ? _spin_unlock+0x1d/0x20
[ 3.473408] [<c0488c7e>] ? ifind+0x83/0x8d
[ 3.485999] [<c04b6ce8>] ? sysfs_find_dirent+0x16/0x27
[ 3.501950] [<c04b6d83>] sysfs_add_one+0x2a/0x36
[ 3.516236] [<c04b7227>] create_dir+0x43/0x72
[ 3.529747] [<c04b7283>] sysfs_create_dir+0x2d/0x41
[ 3.544838] [<c04fac51>] kobject_add_internal+0xe5/0x189
[ 3.561205] [<c04fada0>] kobject_add_varg+0x35/0x41
[ 3.576304] [<c04faf69>] kobject_init_and_add+0x26/0x28
[ 3.592435] [<c07cf7f1>] kernel_param_sysfs_setup+0x4c/0x99
[ 3.609605] [<c07cf935>] param_sysfs_init+0xf7/0x153
[ 3.625006] [<c0401125>] _stext+0x3d/0x11d
[ 3.637760] [<c07cf83e>] ? param_sysfs_init+0x0/0x153
[ 3.653450] [<c041ec8b>] ? wake_up_process+0xf/0x11
[ 3.668925] [<c0432777>] ? start_workqueue_thread+0x1d/0x20
[ 3.685999] [<c0432a2f>] ? __create_workqueue_key+0xa4/0x13c
[ 3.703507] [<c07bc58c>] kernel_init+0x177/0x1de
[ 3.717798] [<c07bc415>] ? kernel_init+0x0/0x1de
[ 3.732215] [<c0404643>] kernel_thread_helper+0x7/0x10
[ 3.748060] =======================
[ 3.758882] ---[ end trace 4eaa2a86a8e2da22 ]---
[ 3.772837] kobject_add_internal failed for acpi with -EEXIST, don't try to register things with the same name in the same directory.
[ 3.809008] Pid: 1, comm: swapper Tainted: G W 2.6.27-rc3-next-20080821-autotest #1
[ 3.834005] [<c04facbd>] kobject_add_internal+0x151/0x189
[ 3.850635] [<c04fada0>] kobject_add_varg+0x35/0x41
[ 3.865700] [<c04faf69>] kobject_init_and_add+0x26/0x28
[ 3.881807] [<c07cf7f1>] kernel_param_sysfs_setup+0x4c/0x99
[ 3.899005] [<c07cf935>] param_sysfs_init+0xf7/0x153
[ 3.914359] [<c0401125>] _stext+0x3d/0x11d
[ 3.927111] [<c07cf83e>] ? param_sysfs_init+0x0/0x153
[ 3.942802] [<c041ec8b>] ? wake_up_process+0xf/0x11
[ 3.958005] [<c0432777>] ? start_workqueue_thread+0x1d/0x20
[ 3.975282] [<c0432a2f>] ? __create_workqueue_key+0xa4/0x13c
[ 3.992999] [<c07bc58c>] kernel_init+0x177/0x1de
[ 4.007322] [<c07bc415>] ? kernel_init+0x0/0x1de
[ 4.021732] [<c0404643>] kernel_thread_helper+0x7/0x10
[ 4.037578] =======================
--
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.
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