Hi, After doing make-bcache -B /dev/sdf make-bcache -C /dev/sdh ls -l /sys/fs/bcache echo 1110734d-230c-4b8f-a63d-dff472a0977b > /sys/block/bcache0/bcache/attach the following warnings were produced with a 3.18.0.x86_64-01967-g86c6a2f kernel: [ 75.218601] bcache: register_bdev() registered backing device sdf [ 82.616568] bcache: run_cache_set() invalidating existing data [ 82.621589] ------------[ cut here ]------------ [ 82.622890] WARNING: CPU: 1 PID: 979 at kernel/sched/core.c:7301 __might_sleep+0x5c/0xa0() [ 82.624344] do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff8155afc8>] bch_allocator_thread+0xd8/0xe30 [ 82.625979] CPU: 1 PID: 979 Comm: bcache_allocato Not tainted 3.18.0.x86_64-01967-g86c6a2f #162 [ 82.627468] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090006 05/23/2012 [ 82.628949] 0000000000000009 ffff8800da963ce8 ffffffff816ea8af 0000000000000001 [ 82.634007] ffff8800da963d38 ffff8800da963d28 ffffffff81073f3c ffff8800da963d28 [ 82.639020] ffffffff819d431c 0000000000000038 0000000000000000 ffff8800e468a680 [ 82.643967] Call Trace: [ 82.645045] [<ffffffff816ea8af>] dump_stack+0x4e/0x68 [ 82.646345] [<ffffffff81073f3c>] warn_slowpath_common+0x7c/0xa0 [ 82.647622] [<ffffffff81073fc6>] warn_slowpath_fmt+0x46/0x50 [ 82.648954] [<ffffffff8155afc8>] ? bch_allocator_thread+0xd8/0xe30 [ 82.650338] [<ffffffff8155afc8>] ? bch_allocator_thread+0xd8/0xe30 [ 82.651667] [<ffffffff810a2e2c>] __might_sleep+0x5c/0xa0 [ 82.652959] [<ffffffff8155b0b7>] bch_allocator_thread+0x1c7/0xe30 [ 82.654335] [<ffffffff8155aef0>] ? bch_invalidate_one_bucket+0x80/0x80 [ 82.655672] [<ffffffff81091a03>] kthread+0x103/0x110 [ 82.656939] [<ffffffff81091900>] ? __kthread_unpark+0x50/0x50 [ 82.658294] [<ffffffff816f43fc>] ret_from_fork+0x7c/0xb0 [ 82.659664] [<ffffffff81091900>] ? __kthread_unpark+0x50/0x50 [ 82.660970] ---[ end trace 15295ea1be01c8a2 ]--- [ 82.683570] ------------[ cut here ]------------ [ 82.684559] WARNING: CPU: 7 PID: 974 at kernel/locking/lockdep.c:712 __lock_acquire+0x21c/0x1c60() [ 82.684559] CPU: 7 PID: 974 Comm: bcache-register Tainted: G W 3.18.0.x86_64-01967-g86c6a2f #162 [ 82.684559] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090006 05/23/2012 [ 82.684559] 0000000000000009 ffff8800dac8f988 ffffffff816ea8af 0000000000000000 [ 82.684559] 0000000000000000 ffff8800dac8f9c8 ffffffff81073f3c ffff8800dac8f9c8 [ 82.684559] ffffffff82668240 0000000000000000 ffff8800dac3da88 0000000000000001 [ 82.684559] Call Trace: [ 82.684559] [<ffffffff816ea8af>] dump_stack+0x4e/0x68 [ 82.684559] [<ffffffff81073f3c>] warn_slowpath_common+0x7c/0xa0 [ 82.684559] [<ffffffff8107403a>] warn_slowpath_null+0x1a/0x20 [ 82.684559] [<ffffffff810c0d5c>] __lock_acquire+0x21c/0x1c60 [ 82.684559] [<ffffffff813b24ae>] ? trace_hardirqs_on_thunk+0x3a/0x3f [ 82.684559] [<ffffffff810d624f>] ? rcu_irq_exit+0x8f/0xb0 [ 82.684559] [<ffffffff810c2706>] ? __lock_acquire+0x1bc6/0x1c60 [ 82.684559] [<ffffffff810c305c>] lock_acquire+0xfc/0x150 [ 82.684559] [<ffffffff8156346c>] ? mca_reap+0x6c/0x170 [ 82.684559] [<ffffffff810bc131>] down_write_trylock+0x61/0x80 [ 82.684559] [<ffffffff8156346c>] ? mca_reap+0x6c/0x170 [ 82.684559] [<ffffffff8156346c>] mca_reap+0x6c/0x170 [ 82.684559] [<ffffffff81563900>] mca_alloc+0xe0/0x4b0 [ 82.684559] [<ffffffff81564893>] __bch_btree_node_alloc+0xb3/0x240 [ 82.684559] [<ffffffff815760da>] run_cache_set+0x6ea/0x950 [ 82.684559] [<ffffffff8123fc6e>] ? kernfs_add_one+0x10e/0x160 [ 82.684559] [<ffffffff815780cf>] register_bcache+0x167f/0x19e0 [ 82.684559] [<ffffffff813a6bcf>] kobj_attr_store+0xf/0x20 [ 82.684559] [<ffffffff812419a8>] sysfs_kf_write+0x48/0x60 [ 82.684559] [<ffffffff81241247>] kernfs_fop_write+0xe7/0x170 [ 82.684559] [<ffffffff811cde6b>] vfs_write+0xcb/0x1d0 [ 82.684559] [<ffffffff816f50dc>] ? retint_swapgs+0x13/0x1b [ 82.684559] [<ffffffff811ce069>] SyS_write+0x49/0xb0 [ 82.684559] [<ffffffff816f44a9>] system_call_fastpath+0x12/0x17 [ 82.684559] ---[ end trace 15295ea1be01c8a3 ]--- [ 82.763919] bcache: register_cache() registered cache device sdh -- Sitsofe | http://sucs.org/~sits/ -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
