On 6/20/2011 4:14 PM, Russell King - ARM Linux wrote:
On Mon, Jun 20, 2011 at 03:58:03PM +0530, Santosh Shilimkar wrote:
No it doesn't work. I still get the crash. The important point
here is not to enable interrupts before CPU is marked
as online and active.
What is the crash (in full please)?
Do we know what interrupt is causing it?
Yes. It's because of interrupt and the CPU active-online
race.
Here is the chash log..
[ 21.025451] CPU1: Booted secondary processor
[ 21.025451] CPU1: Unknown IPI message 0x1
[ 21.029113] Switched to NOHz mode on CPU #1
[ 21.029174] BUG: spinlock lockup on CPU#1, swapper/0, c06220c4
[ 21.029235] [<c0064704>] (unwind_backtrace+0x0/0xf4) from
[<c028edc8>] (do_raw_spin_lock+0xd0/0x164)
[ 21.029266] [<c028edc8>] (do_raw_spin_lock+0xd0/0x164) from
[<c00cc3c4>] (tick_do_update_jiffies64+0x3c/0x118)
[ 21.029296] [<c00cc3c4>] (tick_do_update_jiffies64+0x3c/0x118) from
[<c00ccb04>] (tick_check_idle+0xb0/0x110)
[ 21.029327] [<c00ccb04>] (tick_check_idle+0xb0/0x110) from
[<c00a29cc>] (irq_enter+0x68/0x70)
[ 21.029327] [<c00a29cc>] (irq_enter+0x68/0x70) from [<c00623c4>]
(ipi_timer+0x24/0x40)
[ 21.029357] [<c00623c4>] (ipi_timer+0x24/0x40) from [<c0051368>]
(do_local_timer+0x54/0x70)
[ 21.029388] [<c0051368>] (do_local_timer+0x54/0x70) from [<c048a09c>]
(__irq_svc+0x3c/0x120)
[ 21.029388] Exception stack(0xef87bf78 to 0xef87bfc0)
[ 21.029388] bf60:
00000000 00026ec0
[ 21.029418] bf80: c0622080 ffff7483 c0622080 ffff7483 ef87a000
00000000 c0622080 411fc092
[ 21.029418] bfa0: c063a4f0 00000000 00000001 ef87bfc0 c0482e08
c0482b0c 60000113 ffffffff
[ 21.029449] [<c048a09c>] (__irq_svc+0x3c/0x120) from [<c0482b0c>]
(calibrate_delay+0x8c/0x1d4)
[ 21.029479] [<c0482b0c>] (calibrate_delay+0x8c/0x1d4) from
[<c0482e08>] (secondary_start_kernel+0x110/0x1ac)
[ 21.029510] [<c0482e08>] (secondary_start_kernel+0x110/0x1ac) from
[<c0070ee4>] (platform_cpu_die+0x34/0x54)
[ 22.021362] CPU1: failed to come online
[ 23.997955] CPU1: failed to come online
[ 25.000122] BUG: spinlock lockup on CPU#0, kthreadd/663, efa27e64
[ 25.006408] [<c0064704>] (unwind_backtrace+0x0/0xf4) from
[<c028edc8>] (do_raw_spin_lock+0xd0/0x164)
[ 25.015808] [<c028edc8>] (do_raw_spin_lock+0xd0/0x164) from
[<c048985c>] (_raw_spin_lock_irqsave+0x4c/0x58)
[ 25.025848] [<c048985c>] (_raw_spin_lock_irqsave+0x4c/0x58) from
[<c008ba24>] (complete+0x1c/0x5c)
[ 25.035095] [<c008ba24>] (complete+0x1c/0x5c) from [<c00baf78>]
(kthread+0x68/0x90)
[ 25.042968] [<c00baf78>] (kthread+0x68/0x90) from [<c005dfdc>]
(kernel_thread_exit+0x0/0x8)
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