From: Thomas Gleixner <tglx@linutronix.de>
To: Xianghua Xiao <xiaoxianghua@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [ANNOUNCE] 2.6.33.1-rt11 - BUG?
Date: Thu, 1 Apr 2010 23:07:17 +0200 (CEST) [thread overview]
Message-ID: <alpine.LFD.2.00.1004012306090.32352@localhost.localdomain> (raw)
In-Reply-To: <m2qe6bf505b1004011344hbf36fb5bt78b925ad75e64b19@mail.gmail.com>
On Thu, 1 Apr 2010, Xianghua Xiao wrote:
Can you please stop top posting ?
> Here is the new dmesg output:
> BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
> pcnt: 1 0 in_atomic(): 1, irqs_disabled(): 1, pid: 5770, name: insmod
> Call Trace:
> [ce935dc0] [c00096cc] show_stack+0x6c/0x1a4 (unreliable)
> [ce935df0] [c001f928] __might_sleep+0x104/0x108
> [ce935e00] [c03cb414] rt_spin_lock+0xa0/0xa4
> [ce935e10] [c00a4098] kmem_cache_alloc+0x50/0x17c
> [ce935e40] [c0073570] irq_to_desc_alloc_node+0x104/0x5ec
> [ce935e60] [c00064e0] irq_setup_virq+0x30/0xa8
> [ce935e80] [c000665c] irq_create_mapping+0x104/0x168
> [ce935ea0] [d1f69bc4] dma_init+0x118/0x1f0 [ipc]
> [ce935ee0] [d1f75018] ipc_init+0x18/0x140 [ipc]
> [ce935ef0] [c00038e0] do_one_initcall+0x54/0x210
> [ce935f20] [c005e424] sys_init_module+0x120/0x240
> [ce935f40] [c00139d4] ret_from_syscall+0x0/0x38
>
> I chased from ipc_init to irq_to_desc_alloc_node and found no
> interrupt-disabling.
>
> By looking at irq_to_desc_alloc_node (kernel/irq/handler.c) it has
> raw_spin_lock_irqsave(), with this raw spinlock irqsave I'm not sure
> if it causes trouble at kmem_cache_alloc after rt11 is applied, still
> checking on that.
Can you please disabled CONFIG_SPARSE_IRQ ?
Thanks,
tglx
next prev parent reply other threads:[~2010-04-01 21:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <l2me6bf505b1004011042oce87e64fn94bef56c78a1b10d@mail.gmail.com>
2010-04-01 17:55 ` Xianghua Xiao
2010-04-01 18:23 ` Thomas Gleixner
2010-04-01 18:46 ` Xianghua Xiao
2010-04-01 20:44 ` Xianghua Xiao
2010-04-01 21:07 ` Thomas Gleixner [this message]
2010-04-01 21:54 ` Xianghua Xiao
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=alpine.LFD.2.00.1004012306090.32352@localhost.localdomain \
--to=tglx@linutronix.de \
--cc=linux-kernel@vger.kernel.org \
--cc=xiaoxianghua@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®