On Mon, 13 Jul 2009 20:56:21 -0400 Robert Reif <reif@xxxxxxxxxxxxx> wrote: > FUJITA Tomonori wrote: > > This is the second version of the patchset to convert SPARC to > > asm-generic/dma-mapping-common.h and pci-dma-compat.h: > > > > > I still get the same runtime warning with this patch set at boot time. > > The bad address is within the kernel so it looks like > it's catching a real bug. > > cat kallsyms | grep f0007000 > f0007000 T trapbase_cpu3 > > WARNING: at lib/dma-debug.c:873 check_for_illegal_area+0xc8/0x100() > esp ffd7ba30: DMA-API: device driver maps memory from kernel text or > rodata [addr=f0007000] [len=4096] > Modules linked in: ext3 jbd sd_mod sun_esp esp_scsi scsi_transport_spi Ok, I looked at check_for_illegal_area() in dma-debug. What check_for_illegal_area() does looks bogus to me with some of I/O remapping hardware. > scsi_mod > [f011ffa0 : check_for_illegal_area+0xc8/0x100 ] > [f0120b1c : debug_dma_map_sg+0x158/0x1c4 ] > [fe6946d0 : sbus_esp_map_sg+0xec/0xfc [sun_esp] ] > [fe684454 : esp_maybe_execute_command+0x1f0/0x6f8 [esp_scsi] ] > [fe6849e4 : esp_queuecommand+0x88/0x98 [esp_scsi] ] > [fe638c00 : scsi_dispatch_cmd+0x200/0x2a8 [scsi_mod] ] > [fe63f038 : scsi_request_fn+0x3f4/0x52c [scsi_mod] ] > [f00f6d64 : __generic_unplug_device+0x40/0x50 ] > [f00f6d90 : generic_unplug_device+0x1c/0x38 ] > [f00f4be4 : blk_unplug+0x14/0x24 ] > [f00ade1c : sync_buffer+0x48/0x60 ] > [f01f6d58 : __wait_on_bit+0x4c/0xa4 ] > [f01f6e60 : out_of_line_wait_on_bit+0xb0/0xc0 ] > [fe709320 : __ext3_get_inode_loc+0x3bc/0x418 [ext3] ] > [fe7093b4 : ext3_iget+0x38/0x65c [ext3] ] > [fe712c70 : ext3_get_journal+0xc/0xd4 [ext3] ] > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
