Re: [PATCH v3 00/10] BKL conversion in tty layer

[Arnd Bergmann]

On Thursday 17 June 2010 21:13:52 Tony Luck wrote:

> These changes showed up in linux-next (tag: next-20100617) ... and I'm seeing
> a few WARN_ON messages on ia64 while booting:
> 
> WARNING: at include/linux/tty.h:589 tty_open+0x160/0xc60()
> ...
> Stack trace for the first of these looks like:
> Call Trace:
> ...
>  [<a0000001001c5270>] do_filp_open+0x2f0/0xb40
>  [<a0000001001a5290>] do_sys_open+0x90/0x200
>  [<a0000001001a54d0>] sys_open+0x50/0x80
>  [<a000000100b907e0>] kernel_init+0x340/0x420
>  [<a000000100013c10>] kernel_thread_helper+0x30/0x60
>  [<a00000010000a0c0>] start_kernel_thread+0x20/0x40
> 
> Does anyone see anything similar on other architectures?  Or is ia64 doing
> something "special" here?

Ah, I forgot to test the tty series without the other patches I have
in my bkl removal repository and without CONFIG_TTY_MUTEX.

Does the patch below make this go away? We should probably include
the 'misc' branch of my BKL repository in -next to fix this.

	Arnd

--