Messages in this thread | | | Date | Fri, 04 Jul 2008 14:12:54 +0800 | From | Li Zefan <> | Subject | Re: [-mm] BUG: sleeping function called from invalid context at include/linux/pagemap.h:290 |
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> Li-san, Could you try to below patch on your environment? >
I've tested it, so UNEVICTABLE_LRU is disabled and the bug disapeared.
> > ---------------------- > pagewalk use pte_offset_map(). > pte_offset_map() use kmap_atomic(). > __munlock_pte_handler() use lock_page(). > > So, in CONFIG_HIGHPTE=y, following error happend. > > > BUG: sleeping function called from invalid context at include/linux/pagemap.h:290 > in_atomic():1, irqs_disabled():0 > no locks held by gpg-agent/2134. > Pid: 2134, comm: gpg-agent Not tainted 2.6.26-rc8-mm1 #11 > [<c0421d38>] __might_sleep+0xbe/0xc5 > [<c04770a2>] __munlock_pte_handler+0x3c/0x9e > [<c047c11f>] walk_page_range+0x15b/0x1b4 > [<c0477048>] __munlock_vma_pages_range+0x4e/0x5b > [<c0476f0c>] ? __munlock_pmd_handler+0x0/0x10 > [<c0477066>] ? __munlock_pte_handler+0x0/0x9e > [<c0477064>] munlock_vma_pages_range+0xf/0x11 > [<c0477dcb>] exit_mmap+0x32/0xf2 > [<c042ac12>] ? exit_mm+0xc7/0xda > [<c042732a>] mmput+0x3a/0x8b > [<c042ac20>] exit_mm+0xd5/0xda > [<c042bf6a>] do_exit+0x1fb/0x5d5 > [<c045c4df>] ? audit_syscall_exit+0x2aa/0x2c5 > [<c042c3a3>] do_group_exit+0x5f/0x88 > [<c042c3db>] sys_exit_group+0xf/0x11 > [<c0403956>] syscall_call+0x7/0xb > > then, this feature should be disabled on 32BIT until fixed above problem. > > Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> > > --- > mm/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > Index: b/mm/Kconfig > =================================================================== > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -216,6 +216,7 @@ config PAGE_WALKER > config UNEVICTABLE_LRU > bool "Add LRU list to track non-evictable pages" > default y > + depends on 64BIT > select PAGE_WALKER > help > Keeps unevictable pages off of the active and inactive pageout >
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