Messages in this thread | | | Subject | Re: 2.6.26.6-rt11: BUGs (sleeping function called from invalid context) | From | Fernando Lopez-Lezcano <> | Date | Fri, 07 Nov 2008 15:52:17 -0800 |
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On Fri, 2008-11-07 at 22:47 +0100, Peter Zijlstra wrote: > On Fri, 2008-11-07 at 13:35 -0800, Fernando Lopez-Lezcano wrote: > > On Fri, 2008-11-07 at 20:16 +0100, Peter Zijlstra wrote: > > > On Fri, 2008-11-07 at 14:01 -0500, Steven Rostedt wrote: > > > > Peter, I think we've seen this before. It is the highmem code sleeping. > > > > > > I've been working on an alternative kmap_atomic implementation for -rt, > > > the below has been build and booted but not stressed, anybody care to > > > give it a spin ? > > > > I'll give it a try. Anything in particular I should try to do? Or not > > do? Or watch for? > > Lots of I/O should stress the i386 highmem stuff. If all is well it > works, if not, crashes and splats.
Crashes and splats on boot... sorry, I don't have a way to capture the kernel oops (or whatever happens, I can only see the end of the printout)
-- Fernando
PS: things left on the screen (top to bottom):
? speedstep_detect_processor ? __copy_from_user_ll_noccache_nozero iov_iter_copy_from_user_atomic ? generic_file_buffered_write generic_file_buffered_write ? avs_has_perm_noaudit ? __rt_spin_lock ? selinux_inode_need_killpriv ? __rt_spin_lock mnt_drop_write __generic_file_aio_write_nolock generic_file_aio_write do_sync_write ? __enqueue_entity ? autoremove_wake_function ? selinux_file_oermission ? security_file_permission ? do_sync_write vfs_write sys_write ? schedule_tail ? ret_from_fork ? thread_kernel_helper
> > -- Fernando > > > > > > > --- > > > arch/x86/mm/highmem_32.c | 130 ++++++++++++++++++++++++++++++++++++++++++--- > > > include/asm-x86/highmem.h | 11 ---- > > > include/linux/sched.h | 5 ++ > > > kernel/sched.c | 10 ++++ > > > 4 files changed, 137 insertions(+), 19 deletions(-) > > > [MUNCH] > > > >
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