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Message-ID: <20080925105337.GA9173@doriath.ww600.siemens.net> Date: Thu, 25 Sep 2008 14:53:37 +0400 From: Dmitry Baryshkov <dbaryshkov@...il.com> To: linux-kernel@...r.kernel.org Subject: lockdep warning inside ide/bio Hi, I got this when running the tree based on commit c0f4d6d4b14a75a341d972ff73fb9740e1ceb634. It's arm (tosa) emulated in qemu. ------------[ cut here ]------------ WARNING: at /home/lumag/tosa-tree/kernel/lockdep.c:2195 trace_hardirqs_on_caller+0xf0/0x170() Modules linked in: [<c0029fe4>] (dump_stack+0x0/0x14) from [<c003fc40>] (warn_on_slowpath+0x4c/0x84) [<c003fbf4>] (warn_on_slowpath+0x0/0x84) from [<c00629ac>] (trace_hardirqs_on_caller+0xf0/0x170) r6:c0062a40 r5:00000001 r4:c381b080 [<c00628bc>] (trace_hardirqs_on_caller+0x0/0x170) from [<c0062a40>] (trace_hardirqs_on+0x14/0x18) r6:00000092 r5:00000000 r4:c3412b30 [<c0062a2c>] (trace_hardirqs_on+0x0/0x18) from [<c03172b0>] (_spin_unlock_irq+0x30/0x60) [<c0317280>] (_spin_unlock_irq+0x0/0x60) from [<c002c3f4>] (__flush_dcache_aliases+0xec/0xf8) r4:c3412b50 [<c002c308>] (__flush_dcache_aliases+0x0/0xf8) from [<c002c474>] (flush_dcache_page+0x74/0x9c) [<c002c400>] (flush_dcache_page+0x0/0x9c) from [<c008f958>] (copy_to_high_bio_irq+0x64/0xb0) r5:c386d668 r4:c3a2b000 [<c008f8f4>] (copy_to_high_bio_irq+0x0/0xb0) from [<c008fe54>] (__bounce_end_io_read+0x34/0x48) [<c008fe20>] (__bounce_end_io_read+0x0/0x48) from [<c008fe84>] (bounce_end_io_read_isa+0x1c/0x24) r6:c39b9658 r5:00000000 r4:c387f448 [<c008fe68>] (bounce_end_io_read_isa+0x0/0x24) from [<c00c7624>] (bio_endio+0x54/0x58) [<c00c75d0>] (bio_endio+0x0/0x58) from [<c012cbf4>] (req_bio_endio+0xac/0xd0) [<c012cb48>] (req_bio_endio+0x0/0xd0) from [<c012cdb8>] (__end_that_request_first+0x1a0/0x2f0) r5:00011400 r4:c387f448 [<c012cc18>] (__end_that_request_first+0x0/0x2f0) from [<c012d60c>] (__blk_end_request+0x28/0x54) [<c012d5e4>] (__blk_end_request+0x0/0x54) from [<c01bd024>] (__ide_end_request+0x94/0xc4) r5:c39ca0c0 r4:c39ca0c0 [<c01bcf90>] (__ide_end_request+0x0/0xc4) from [<c01bd140>] (ide_end_request+0x68/0x88) r4:00011400 [<c01bd0d8>] (ide_end_request+0x0/0x88) from [<c01c2da4>] (task_end_request+0x5c/0x70) r7:00000000 r6:c39b9658 r5:00000050 r4:c39ca0c0 [<c01c2d48>] (task_end_request+0x0/0x70) from [<c01c33a4>] (task_in_intr+0xa4/0xd4) r5:00000000 r4:c39ca0c0 [<c01c3300>] (task_in_intr+0x0/0xd4) from [<c01bdda0>] (ide_intr+0x10c/0x184) r7:40000193 r6:c39ca0c0 r5:c3987938 r4:00000055 [<c01bdc94>] (ide_intr+0x0/0x184) from [<c00717c4>] (handle_IRQ_event+0x2c/0x70) [<c0071798>] (handle_IRQ_event+0x0/0x70) from [<c0072db0>] (handle_edge_irq+0xf8/0x180) r7:c0421314 r6:c3a328a0 r5:00000055 r4:c04212e4 [<c0072cb8>] (handle_edge_irq+0x0/0x180) from [<c0032984>] (pxa_gpio_demux_handler+0x94/0xe0) r8:c381d958 r7:c04400b0 r6:f2e00000 r5:00000fe0 r4:00000015 [<c00328f0>] (pxa_gpio_demux_handler+0x0/0xe0) from [<c0025048>] (__exception_text_start+0x48/0x64) [<c0025000>] (__exception_text_start+0x0/0x64) from [<c0025828>] (__irq_svc+0x48/0xf0) Exception stack(0xc381d9b8 to 0xc381da00) d9a0: 00000001 c381b3d0 d9c0: 00000001 20000113 c042da70 c381da9c c08690d4 c381daa4 00000002 00000004 d9e0: c00756d0 c381da14 c381d9b0 c381da00 c00627e0 c03172bc 20000113 ffffffff r6:00000400 r5:f2d00000 r4:ffffffff [<c0317280>] (_spin_unlock_irq+0x0/0x60) from [<c012e5fc>] (generic_unplug_device+0x38/0x3c) r4:c3a30a80 [<c012e5c4>] (generic_unplug_device+0x0/0x3c) from [<c012c56c>] (blk_unplug+0x1c/0x20) r4:c381da9c [<c012c550>] (blk_unplug+0x0/0x20) from [<c012c584>] (blk_backing_dev_unplug+0x14/0x18) [<c012c570>] (blk_backing_dev_unplug+0x0/0x18) from [<c00c2290>] (block_sync_page+0x50/0x58) [<c00c2240>] (block_sync_page+0x0/0x58) from [<c007571c>] (sync_page+0x4c/0x5c) [<c00756d0>] (sync_page+0x0/0x5c) from [<c0315170>] (__wait_on_bit_lock+0x60/0x94) [<c0315110>] (__wait_on_bit_lock+0x0/0x94) from [<c00756a8>] (__lock_page+0x68/0x78) [<c0075640>] (__lock_page+0x0/0x78) from [<c0075904>] (find_lock_page+0x64/0x94) r6:000000a2 r5:c3412b20 r4:c07fa480 [<c00758a0>] (find_lock_page+0x0/0x94) from [<c00781e4>] (filemap_fault+0x1cc/0x39c) r6:c3412b20 r5:00000000 r4:00000000 [<c0078018>] (filemap_fault+0x0/0x39c) from [<c0084df4>] (__do_fault+0x54/0x428) [<c0084da0>] (__do_fault+0x0/0x428) from [<c0085214>] (do_linear_fault+0x4c/0x54) [<c00851c8>] (do_linear_fault+0x0/0x54) from [<c0086414>] (handle_mm_fault+0x118/0x310) [<c00862fc>] (handle_mm_fault+0x0/0x310) from [<c002b840>] (__do_page_fault+0x78/0x108) [<c002b7c8>] (__do_page_fault+0x0/0x108) from [<c002ba98>] (do_page_fault+0xa4/0x164) [<c002b9f4>] (do_page_fault+0x0/0x164) from [<c002bbf4>] (do_translation_fault+0x18/0x80) [<c002bbdc>] (do_translation_fault+0x0/0x80) from [<c00251bc>] (do_DataAbort+0x3c/0xa0) r5:c0412620 r4:ffffffff [<c0025180>] (do_DataAbort+0x0/0xa0) from [<c00257cc>] (__dabt_svc+0x4c/0x60) Exception stack(0xc381dd30 to 0xc381dd78) dd20: 000b2e28 000001d0 00000000 00000000 dd40: 000b2e28 000c38cc c3a2cc50 00000000 c39e9d08 00000000 c3a2cc88 c381dd8c dd60: 00000000 c381dd78 c00d1700 c0134788 20000013 ffffffff r8:c39e9d08 r7:00000000 r6:c3a2cc50 r5:c381dd64 r4:ffffffff [<c00d16bc>] (padzero+0x0/0x5c) from [<c00d2bb8>] (load_elf_binary+0x974/0xce0) [<c00d2244>] (load_elf_binary+0x0/0xce0) from [<c00a2420>] (search_binary_handler+0xf8/0x2ac) [<c00a2328>] (search_binary_handler+0x0/0x2ac) from [<c00d158c>] (load_script+0x204/0x218) [<c00d1388>] (load_script+0x0/0x218) from [<c00a2420>] (search_binary_handler+0xf8/0x2ac) r6:c3a2cc88 r5:c04256a4 r4:00000000 [<c00a2328>] (search_binary_handler+0x0/0x2ac) from [<c00a3654>] (do_execve+0x138/0x1d0) [<c00a351c>] (do_execve+0x0/0x1d0) from [<c0029094>] (kernel_execve+0x40/0x88) [<c0029054>] (kernel_execve+0x0/0x88) from [<c00253c0>] (run_init_process+0x20/0x2c) r7:00000000 r6:00000000 r5:00000000 r4:c043fd14 [<c00253a0>] (run_init_process+0x0/0x2c) from [<c0025470>] (init_post+0xa4/0x108) [<c00253cc>] (init_post+0x0/0x108) from [<c0008a88>] (kernel_init+0x78/0x90) r4:c043fd18 [<c0008a10>] (kernel_init+0x0/0x90) from [<c0043520>] (do_exit+0x0/0x2dc) r4:00000000 ---[ end trace 574432789d45c513 ]--- -- With best wishes Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to 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