Messages in this thread | | | Date | Fri, 16 Apr 2010 09:40:21 +0800 | From | Gui Jianfeng <> | Subject | lockdep warning on block tree for-2.6.35 branch |
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Hi
I got the following warning when testing.
INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. Pid: 3298, comm: find Not tainted 2.6.34-rc4-Vivek-Blkio #48 Call Trace: [<c04558bf>] __lock_acquire+0x166/0x789 [<c0455f76>] lock_acquire+0x94/0xb1 [<fa7c06d9>] ? blkiocg_update_io_add_stats+0x21/0xe5 [blk_cgroup] [<c068e1e2>] _raw_spin_lock_irqsave+0x27/0x5a [<fa7c06d9>] ? blkiocg_update_io_add_stats+0x21/0xe5 [blk_cgroup] [<fa7c06d9>] blkiocg_update_io_add_stats+0x21/0xe5 [blk_cgroup] [<fa816886>] cfq_insert_request+0xdc/0x4f2 [cfq_iosched] [<c0451b48>] ? trace_hardirqs_off+0xb/0xd [<c052b7e9>] elv_insert+0xe0/0x174 [<c052b90c>] __elv_add_request+0x8f/0x94 [<c05314e2>] __make_request+0x357/0x389 [<c04d6b44>] ? __find_get_block+0x15d/0x167 [<c052faa0>] generic_make_request+0x27f/0x321 [<c0491017>] ? mempool_alloc_slab+0xe/0x10 [<c0491287>] ? mempool_alloc+0x3c/0xd7 [<c0531186>] submit_bio+0x8a/0x8f [<c04da90a>] ? bio_alloc_bioset+0x37/0x96 [<c04d656f>] submit_bh+0xf0/0x10f [<c04d7556>] ll_rw_block+0xc0/0xf9 [<f86e717c>] ext3_bread+0x34/0x7b [ext3] [<f86ea875>] htree_dirblock_to_tree+0x1f/0x120 [ext3] [<f86ea9f0>] ext3_htree_fill_tree+0x7a/0x1bb [ext3] [<c0453147>] ? mark_held_locks+0x3d/0x58 [<c04b29ce>] ? kmem_cache_alloc_notrace+0x86/0xaa [<c0453269>] ? trace_hardirqs_on_caller+0x107/0x12f [<f86e3b53>] ext3_readdir+0x1f9/0x69e [ext3] [<c04c68ec>] ? filldir64+0x0/0xcd [<c068d4fe>] ? mutex_lock_killable_nested+0x2c5/0x2d9 [<c0450b5f>] ? debug_mutex_free_waiter+0x45/0x48 [<c068d508>] ? mutex_lock_killable_nested+0x2cf/0x2d9 [<c04c6ac7>] ? vfs_readdir+0x46/0x94 [<c04c6ae9>] vfs_readdir+0x68/0x94 [<c04c68ec>] ? filldir64+0x0/0xcd [<c04c6b73>] sys_getdents64+0x5e/0x9f [<c040274c>] sysenter_do_call+0x12/0x32
Thanks, Gui
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