http://bugzilla.kernel.org/show_bug.cgi?id=11562
Summary: unpluggin a processor results in scheduling while atomic
Product: ACPI
Version: 2.5
KernelVersion: 2.6.26.5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
CC: [EMAIL PROTECTED]
Latest working kernel version: unknown
Earliest failing kernel version: 2.6.26.5
Distribution:centos 5.0 64bit
Hardware Environment: Lenovo T61 Dual core.
Software Environment:
Problem Description:
1. configure kernel as describe in Documentation/submitCheckList section 12.
2. boot this kernel
3. run . echo 0 > /sys/devices/system/node/node0/cpu1/online
result:
SMP alternatives: switching to UP code
BUG: sleeping function called from invalid context at mm/slab.c:3052
in_atomic():1, irqs_disabled():0
INFO: lockdep is turned off.
Pid: 2463, comm: bash Not tainted 2.6.26.5 #28
Call Trace:
[<ffffffff80251c61>] ? __debug_show_held_locks+0x1b/0x24
[<ffffffff8022aae6>] __might_sleep+0x108/0x10a
[<ffffffff802962fd>] kmem_cache_alloc_node+0x39/0x1a3
[<ffffffff80289432>] ? __get_vm_area_node+0xa4/0x1d7
[<ffffffff80289432>] __get_vm_area_node+0xa4/0x1d7
[<ffffffff8020a3d7>] ? disable_TSC+0x17/0x53
[<ffffffff802895c5>] get_vm_area_caller+0x2f/0x31
[<ffffffff804b2653>] ? text_poke+0x11d/0x19a
[<ffffffff80289d40>] vmap+0x31/0x63
[<ffffffff804b7b62>] ? _etext+0x0/0xe
[<ffffffff804b2653>] text_poke+0x11d/0x19a
[<ffffffff804b7b62>] ? _etext+0x0/0xe
[<ffffffff802118d4>] alternatives_smp_unlock+0x4f/0x63
[<ffffffff80211b77>] alternatives_smp_switch+0x161/0x19e
[<ffffffff8021b80c>] __cpu_die+0x5c/0x86
[<ffffffff8049d047>] _cpu_down+0x1b5/0x28d
[<ffffffff8049d145>] cpu_down+0x26/0x36
[<ffffffff8049e306>] store_online+0x32/0x75
[<ffffffff8037402e>] sysdev_store+0x24/0x26
[<ffffffff802e3134>] sysfs_write_file+0xe5/0x121
[<ffffffff8029dddc>] vfs_write+0xae/0x124
[<ffffffff8029e320>] sys_write+0x47/0x70
[<ffffffff8020bffb>] system_call_after_swapgs+0x7b/0x80
Steps to reproduce:
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