From: Rabin Vincent <rabin@rab.in>
To: lkml <linux-kernel@vger.kernel.org>
Cc: yinghai@kernel.org, hpa@zytor.com, penberg@cs.helsinki.fi,
cl@linux-foundation.org
Subject: start_kernel(): bug: interrupts were enabled early
Date: Fri, 26 Mar 2010 01:11:00 +0530 [thread overview]
Message-ID: <20100325194100.GA2364@debian> (raw)
On latest git, I'm seeing "start_kernel(): bug: interrupts were enabled
early" messages on ARM (sample log below).
This appears to be caused by:
start_kernel -> radix_tree_init -> kmem_cache_create (slub) ->
down_write -> __down_write (lib/rwsem-spinlock.c) -> spin_unlock_irq
radix_tree_init was moved earlier by:
commit 773e3eb7b81e5ba13b5155dfb3bb75b8ce37f8f9
Author: Yinghai Lu <yinghai@kernel.org>
Date: Wed Feb 10 01:20:33 2010 -0800
init: Move radix_tree_init() early
Prepare for using radix trees in early_irq_init().
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1265793639-15071-30-git-send-email-yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Rabin
---
Uncompressing Linux... done, booting the kernel.
Linux version 2.6.34-rc2-00184-g01e7770 (rabin@debian) (gcc version 4.4.1 (Sourcery G++ Lite 2009q3-67) ) #5 Fri Mar 26 00:56:33 IST 2010
CPU: ARMv7 Processor [410fc080] revision 0 (ARMv7), cr=10c03c7f
CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
Machine: ARM-RealView PB-A8
Ignoring unrecognised tag 0x00000000
bootconsole [earlycon0] enabled
Memory policy: ECC disabled, Data cache writeback
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32512
Kernel command line: earlyprintk mem=128M console=ttyAMA0 root=/dev/ram0 init=/linuxrc
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 128MB = 128MB total
Memory: 123916k/123916k available, 7156k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xffc00000 - 0xffe00000 ( 2 MB)
vmalloc : 0xc8800000 - 0xf8000000 ( 760 MB)
lowmem : 0xc0000000 - 0xc8000000 ( 128 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.init : 0xc0008000 - 0xc0331000 (3236 kB)
.text : 0xc0331000 - 0xc040b000 ( 872 kB)
.data : 0xc040c000 - 0xc0418180 ( 49 kB)
SLUB: Genslabs=11, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Hierarchical RCU implementation.
RCU-based detection of stalled CPUs is enabled.
NR_IRQS:96
start_kernel(): bug: interrupts were enabled early
Calibrating delay loop... 419.43 BogoMIPS (lpj=2097152)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
devtmpfs: initialized
Serial: AMBA PL011 UART driver
dev:uart0: ttyAMA0 at MMIO 0x10009000 (irq = 44) is a AMBA/PL011
console [ttyAMA0] enabled, bootconsole disabled
console [ttyAMA0] enabled, bootconsole disabled
dev:uart1: ttyAMA1 at MMIO 0x1000a000 (irq = 45) is a AMBA/PL011
dev:uart2: ttyAMA2 at MMIO 0x1000b000 (irq = 46) is a AMBA/PL011
fpga:uart3: ttyAMA3 at MMIO 0x1000c000 (irq = 47) is a AMBA/PL011
Switching to clocksource timer3
Unpacking initramfs...
Freeing initrd memory: 1680K
VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 0
Freeing init memory: 3236K
next reply other threads:[~2010-03-25 19:41 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-25 19:41 Rabin Vincent [this message]
2010-03-31 20:40 ` start_kernel(): bug: interrupts were enabled early Andrew Morton
2010-03-31 20:47 ` Yinghai Lu
2010-03-31 20:52 ` Andrew Morton
2010-03-31 21:12 ` H. Peter Anvin
2010-03-31 21:28 ` Andrew Morton
2010-03-31 22:35 ` Benjamin Herrenschmidt
2010-04-01 16:13 ` Linus Torvalds
2010-04-01 14:27 ` Andrew Morton
2010-04-01 20:12 ` Linus Torvalds
2010-04-02 14:46 ` David Howells
2010-04-02 14:54 ` Linus Torvalds
2010-04-07 19:09 ` Kevin Hilman
2010-04-08 15:55 ` Américo Wang
2010-03-31 21:01 ` Matthew Wilcox
2010-03-31 21:05 ` H. Peter Anvin
2010-03-31 21:17 ` Matthew Wilcox
2010-03-31 21:42 ` Christoph Lameter
2010-03-31 21:54 ` Russell King
2010-03-31 21:57 ` H. Peter Anvin
2010-03-31 22:30 ` Russell King
2010-03-31 22:37 ` Benjamin Herrenschmidt
2010-03-31 22:49 ` Andrew Morton
2010-04-01 1:17 ` Benjamin Herrenschmidt
2010-03-31 22:26 ` Andrew Morton
2010-04-01 6:26 ` H. Peter Anvin
2010-04-01 3:33 ` Andrew Morton
2010-04-01 6:48 ` Benjamin Herrenschmidt
2010-04-01 16:15 ` H. Peter Anvin
2010-04-01 11:06 ` David Howells
2010-04-01 15:55 ` Christoph Lameter
2010-04-01 23:00 ` Benjamin Herrenschmidt
2010-04-01 6:50 ` Benjamin Herrenschmidt
2010-03-31 22:36 ` Benjamin Herrenschmidt
2010-04-01 15:57 ` Christoph Lameter
2010-03-31 21:05 ` Russell King
2010-03-31 21:08 ` H. Peter Anvin
2010-03-31 22:31 ` Benjamin Herrenschmidt
2010-03-31 22:36 ` H. Peter Anvin
2010-03-31 22:58 ` David Howells
2010-04-01 9:41 ` Jamie Lokier
2010-04-01 11:23 ` Matthew Wilcox
2010-04-01 10:50 ` David Howells
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