On Sat, Sep 03, 2016 at 11:29:49PM +0200, Marcin wrote: > Hi! > Kernel at commit c820493652e830dc050e1418301e1bdec5691a1e > > I createt to devices, fast has size > # blockdev --getsz /dev/sde1 > 20971520 > and slower device: > # blockdev --getsz /dev/sdd1 > 2930209551 > > I was copying files from one disk to bcache, after some time I got: > BUG: soft lockup - CPU#0 stuck for 22s! [bch_copygc_read:5328] Thanks for the report - can you run addr2line with your vmlinux file, and the RIP? addr2line -i -e vmlinux ffffffffc028795b > > # cat /sys/fs/bcache/5ad3d751-cb40-4bb7-9546-3e5b48ccd3cf/cache0/dirty_bytes > /sys/fs/bcache/5ad3d751-cb40-4bb7-9546-3e5b48ccd3cf/cache1/dirty_bytes > 9269264384 > 2540163072 > > dmesg says: > [ 9088.110001] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! > [bch_copygc_read:5328] > [ 9088.110001] Modules linked in: bcache lz4_compress zlib_deflate libcrc32c > lz4_decompress sha1_generic cpufreq_ondemand msr af_packet fuse pcrypt > nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack ipv6 coretemp hwmon > kvm_intel kvm irqbypass i2c_i801 i2c_core sky2 hpsa acpi_cpufreq > scsi_transport_sas processor button raid1 md_mod pata_jmicron ehci_pci > ehci_hcd dm_mod > [ 9088.110001] CPU: 0 PID: 5328 Comm: bch_copygc_read Not tainted 4.7.0+ #2 > [ 9088.110001] Hardware name: Gigabyte Technology Co., Ltd. > 965P-DS3/965P-DS3, BIOS F14 06/25/2009 > [ 9088.110001] task: ffff88001b561a80 ti: ffff880002810000 task.ti: > ffff880002810000 > [ 9088.110001] RIP: 0010:[<ffffffffc028795b>] [<ffffffffc028795b>] > bch_moving_gc+0xcb/0xd90 [bcache] > [ 9088.110001] RSP: 0018:ffff880002813d20 EFLAGS: 00000287 > [ 9088.110001] RAX: ffffc900001f6e78 RBX: ffff8800102c5000 RCX: > 000000000003c000 > [ 9088.110001] RDX: ffffc9000027f000 RSI: ffff8800102c5000 RDI: > ffff8800102c5608 > [ 9088.110001] RBP: ffff880002813e40 R08: ffff880002813d90 R09: > 0000000002000000 > [ 9088.110001] R10: 0000000000000bc6 R11: 0000000000064000 R12: > ffff8800014d0000 > [ 9088.110001] R13: ffff8800102c5000 R14: 0000000000027800 R15: > 0000000001b6c6e0 > [ 9088.110001] FS: 0000000000000000(0000) GS:ffff88003fc00000(0000) > knlGS:0000000000000000 > [ 9088.110001] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 9088.110001] CR2: 000056048ce06f62 CR3: 000000003d0ce000 CR4: > 00000000000006f0 > [ 9088.110001] Stack: > [ 9088.110001] 0000000000015f00 0000000000015f00 ffffffff8107bd3f > ffff8800102c5000 > [ 9088.110001] ffff880002813de0 0000000000000000 ffff880002813e68 > ffff880002813e40 > [ 9088.110001] 0000000000000002 0000000000064000 ffff8800102c5608 > 000000000000000f > [ 9088.110001] Call Trace: > [ 9088.110001] [<ffffffff8107bd3f>] ? sched_clock_cpu+0x7f/0xa0 > [ 9088.110001] [<ffffffffc028878c>] bch_moving_gc_thread+0x16c/0x180 > [bcache] > [ 9088.110001] [<ffffffffc0288620>] ? bch_moving_gc+0xd90/0xd90 [bcache] > [ 9088.110001] [<ffffffff8106e874>] kthread+0xc4/0xe0 > [ 9088.110001] [<ffffffff8146b0bf>] ret_from_fork+0x1f/0x40 > [ 9088.110001] [<ffffffff8106e7b0>] ? kthread_worker_fn+0x150/0x150 > [ 9088.110001] Code: 00 48 8b 8b a8 02 00 00 48 8b 93 a8 05 00 00 48 8d 04 > 40 48 8d 0c 49 48 8d 04 82 48 8d 14 8a 48 39 d0 0f 83 7e 08 00 00 48 89 de > <44> 8b 48 04 c6 40 09 00 45 85 c9 74 2e f7 40 04 01 00 01 00 75 > > > Compression wasn't turned on. > > Marcin > -- > 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 -- 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
