Hi! I get this one during boot... Pavel [ 0.000000] Linux version 4.12.0+ (pavel@duo) (gcc version 4.9.2 (Debian 4.9.2-10) ) #411 SMP Tue Jul 25 09:04:04 CEST 2017 [ 0.000000] Disabled fast string operations [ 0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' ... [ 11.178720] EXT4-fs (sda4): re-mounted. Opts: errors=remount-ro [ 12.680438] ------------[ cut here ]------------ [ 12.683112] WARNING: CPU: 2 PID: 2811 at kernel/locking/lockdep.c:721 register_lock_class+0x128/0x46a [ 12.685896] Modules linked in: [ 12.688629] CPU: 2 PID: 2811 Comm: bcache-register Not tainted 4.12.0+ #411 [ 12.691453] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET73WW (1.43 ) 10/12/2016 [ 12.694359] task: f2486040 task.stack: f25f4000 [ 12.697259] EIP: register_lock_class+0x128/0x46a [ 12.700144] EFLAGS: 00010097 CPU: 2 [ 12.702977] EAX: c4f68379 EBX: c5396730 ECX: 00000000 EDX: 00000c3f [ 12.705858] ESI: 00000000 EDI: f269d084 EBP: f25f5c84 ESP: f25f5c58 [ 12.708788] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 12.711717] CR0: 80050033 CR2: b764930e CR3: 333d9b80 CR4: 00040630 [ 12.714689] Call Trace: [ 12.717617] __lock_acquire+0x86/0x94a [ 12.720466] lock_acquire+0x4a/0x66 [ 12.723223] ? mca_reap+0x56/0x115 [ 12.725972] down_write_trylock+0x44/0x59 [ 12.728737] ? mca_reap+0x56/0x115 [ 12.731454] mca_reap+0x56/0x115 [ 12.734131] mca_alloc+0x80/0x390 [ 12.736741] bch_btree_node_get+0x76/0x27e [ 12.739324] run_cache_set+0x2c0/0x7c1 [ 12.741866] register_bcache+0xc35/0x109b [ 12.744356] ? register_bcache+0xc35/0x109b [ 12.746826] ? x86_perf_event_set_period+0x187/0x20c [ 12.749305] ? __mutex_lock+0x2a/0x5d7 [ 12.751725] ? bch_cache_set_alloc+0x577/0x577 [ 12.754138] kobj_attr_store+0x10/0x1f [ 12.756508] ? kobj_attr_store+0x10/0x1f [ 12.758906] sysfs_kf_write+0x2f/0x41 [ 12.761258] ? sysfs_file_ops+0x40/0x40 [ 12.763521] kernfs_fop_write+0xd3/0x14a [ 12.765762] ? sysfs_file_ops+0x40/0x40 [ 12.767948] ? kernfs_vma_page_mkwrite+0x67/0x67 [ 12.770121] __vfs_write+0x1c/0x103 [ 12.772076] ? vfs_write+0x93/0x13c [ 12.774058] ? __sb_start_write+0xeb/0x14c [ 12.776147] ? vfs_write+0x93/0x13c [ 12.778135] vfs_write+0xa1/0x13c [ 12.780033] SyS_write+0x3d/0x81 [ 12.781854] do_int80_syscall_32+0x42/0x84 [ 12.783631] entry_INT80_32+0x2e/0x2e [ 12.785357] EIP: 0xb7758c42 [ 12.787015] EFLAGS: 00000246 CPU: 2 [ 12.788711] EAX: ffffffda EBX: 00000003 ECX: b7755000 EDX: 0000000a [ 12.790428] ESI: 0000000a EDI: b7755000 EBP: bfca9a0c ESP: bfca9954 [ 12.792168] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b [ 12.793861] Code: 0f 85 94 00 00 00 68 da 7f e8 c4 68 f6 7d e8 c4 e8 58 e0 00 00 0f ff 83 c4 08 eb 7e 8b 47 0c 39 83 08 01 00 00 0f 84 1e 03 00 00 <0f> ff e9 17 03 00 00 85 db 74 0b 3b 43 10 74 e1 8b 1b 85 db 75 [ 12.797697] ---[ end trace 6e213ee067267bec ]--- [ 12.808884] bcache: bch_journal_replay() journal replay done, 0 keys in 2 entries, seq 4 [ 12.822321] bcache: register_cache() registered cache device sdb1 [ 13.378319] bcache: register_bdev() registered backing device sda3 [ 15.243852] Adding 1681428k swap on /dev/sda1. Priority:-1 extents:1 across:1681428k [ 239.805060] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: errors=remount-ro [ 240.021482] systemd-journald[2514]: Received request to flush runtime journal from PID 1 [ 251.847202] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory [ 251.866580] NFSD: starting 90-second grace period (net c5071e80) [ 254.912204] e1000e: eth2 NIC Link is Up 100 Mbps Full Duplex, Flow Control: Rx/Tx [ 254.912257] e1000e 0000:00:19.0 eth2: 10/100 speed: disabling TSO [ 287.780875] EXT4-fs (sdb4): mounted filesystem with ordered data mode. Opts: (null) [ 287.783634] EXT4-fs (sdb2): mounted filesystem with ordered data mode. Opts: (null) -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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