On Mon, Apr 09, 2007 at 12:25:54PM +0400, Alexey Dobriyan wrote: > After > cat /proc/self/pagemap > > BUG: sleeping function called from invalid context at > include/asm/uaccess.h:453 > in_atomic():1, irqs_disabled():0 > 1 lock held by cat/14183: > #0: (&mm->mmap_sem){----}, at: [<c017d17b>] pagemap_read+0x11f/0x21b > [<c01b7bc7>] copy_to_user+0x37/0x4c > [<c017cf92>] add_to_pagemap+0x49/0x6f > [<c017d034>] pagemap_pte_range+0x56/0x7e > [<c017cfde>] pagemap_pte_range+0x0/0x7e > [<c01b481d>] walk_page_range+0xf1/0x1a0 > [<c017d1e3>] pagemap_read+0x187/0x21b > [<c01fdafa>] tty_write+0x1bb/0x1cc > [<c017d05c>] pagemap_read+0x0/0x21b > [<c01589b0>] vfs_read+0x72/0x95 > [<c0158cce>] sys_read+0x41/0x67 > [<c0103d96>] sysenter_past_esp+0x8f/0x99 > [<c0103d66>] sysenter_past_esp+0x5f/0x99 > =======================
This looks like it was caused by CONFIG_HIGHPTE making pte_offset_map call kmap_atomic. The message about mm->mmap_sem is spurious. Looking at a fix. -- Mathematics is the supreme nostalgia of our time. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/