From: Thomas Gleixner <tglx@linutronix.de>
To: Frank Rowand <frank.rowand@am.sony.com>
Cc: linux-rt-users@vger.kernel.org
Subject: Re: rt5, sleeping function called from invalid context
Date: Thu, 28 Jul 2011 21:39:43 +0200 (CEST) [thread overview]
Message-ID: <alpine.LFD.2.02.1107282139120.31246@ionos> (raw)
In-Reply-To: <4E31B6F3.80602@am.sony.com>
On Thu, 28 Jul 2011, Frank Rowand wrote:
> Thomas,
>
> Here is one of my current BUGs, from rt5 (same panda board, same config):
>
>
> BUG: sleeping function called from invalid context at kernel/rtmutex.c:645
> in_atomic(): 0, irqs_disabled(): 128, pid: 599, name: bash
> 2 locks held by bash/599:
> #0: (tty_mutex){+.+.+.}, at: [<c02b7600>] tty_open+0x4c/0x4c4
> #1: (big_tty_mutex){+.+.+.}, at: [<c048005c>] tty_lock+0x2c/0x54
> irq event stamp: 18015
> hardirqs last enabled at (18014): [<c047fe68>] _raw_spin_unlock_irqrestore+0x60/0x74
> hardirqs last disabled at (18015): [<c02d4714>] serial_omap_console_write+0x28/0x230
> softirqs last enabled at (0): [<c009d0d0>] copy_process+0x364/0xf84
> softirqs last disabled at (0): [< (null)>] (null)
> [<c00681b8>] (unwind_backtrace+0x0/0xf0) from [<c047f348>] (rt_spin_lock+0x24/0x5c)
> [<c047f348>] (rt_spin_lock+0x24/0x5c) from [<c02d48c0>] (serial_omap_console_write+0x1d4/0x230)
> [<c02d48c0>] (serial_omap_console_write+0x1d4/0x230) from [<c009f154>] (__call_console_drivers+0xcc/0xf4
> )
> [<c009f154>] (__call_console_drivers+0xcc/0xf4) from [<c009f3e4>] (console_unlock+0x158/0x210)
> [<c009f3e4>] (console_unlock+0x158/0x210) from [<c009f724>] (console_device+0x54/0x60)
> [<c009f724>] (console_device+0x54/0x60) from [<c02b796c>] (tty_open+0x3b8/0x4c4)
> [<c02b796c>] (tty_open+0x3b8/0x4c4) from [<c014dac8>] (chrdev_open+0x180/0x260)
> [<c014dac8>] (chrdev_open+0x180/0x260) from [<c0148598>] (__dentry_open+0x1d4/0x348)
> [<c0148598>] (__dentry_open+0x1d4/0x348) from [<c01487d8>] (nameidata_to_filp+0x5c/0x64)
> [<c01487d8>] (nameidata_to_filp+0x5c/0x64) from [<c01568d4>] (do_last+0x180/0x698)
> [<c01568d4>] (do_last+0x180/0x698) from [<c01585d8>] (path_openat+0xb8/0x3f8)
> [<c01585d8>] (path_openat+0xb8/0x3f8) from [<c0158a00>] (do_filp_open+0x30/0x84)
> [<c0158a00>] (do_filp_open+0x30/0x84) from [<c014820c>] (do_sys_open+0xf4/0x188)
> [<c014820c>] (do_sys_open+0xf4/0x188) from [<c0060da0>] (ret_fast_syscall+0x0/0x3c)
https://lkml.org/lkml/2011/7/28/114
Thanks,
tglx
prev parent reply other threads:[~2011-07-28 19:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-28 19:22 rt5, sleeping function called from invalid context Frank Rowand
2011-07-28 19:30 ` Frank Rowand
2011-07-28 19:37 ` Frank Rowand
2011-07-28 19:45 ` Thomas Gleixner
2011-07-28 19:39 ` Thomas Gleixner [this message]
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