Hi, Using the Debian 4.8.11 kernel, I'm seeing occasional ATA command failures on the SSD cache device with 4.8.11, these are making the SSD fail the commands, and eventually hitting a BUG and lockup. For the time being, I've disabled discard in the filesystem, and the fault has not reoccurred. [25890.520117] ata5: hard resetting link [25890.996044] ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [25890.996740] ata5.00: configured for UDMA/133 [25890.996762] sd 4:0:0:0: [sde] tag#19 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [25890.996765] sd 4:0:0:0: [sde] tag#19 Sense Key : Illegal Request [current] [25890.996768] sd 4:0:0:0: [sde] tag#19 Add. Sense: Unaligned write command [25890.996771] sd 4:0:0:0: [sde] tag#19 CDB: Write(10) 2a 00 0a cf 3f 88 00 00 60 00 [25890.996773] blk_update_request: I/O error, dev sde, sector 181354376 [25890.996777] bcache: bch_count_io_errors() sde3: IO error on writing data to cache, recovering [25890.996798] sd 4:0:0:0: [sde] tag#20 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [25890.996800] sd 4:0:0:0: [sde] tag#20 Sense Key : Illegal Request [current] [25890.996802] sd 4:0:0:0: [sde] tag#20 Add. Sense: Unaligned write command [25890.996805] sd 4:0:0:0: [sde] tag#20 CDB: Read(10) 28 00 08 0e f9 e8 00 00 20 00 [25890.996806] blk_update_request: I/O error, dev sde, sector 135199208 [25890.996807] bcache: bch_count_io_errors() sde3: IO error on reading dirty data from cache, recovering [25890.996813] sd 4:0:0:0: [sde] tag#21 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [25890.996815] sd 4:0:0:0: [sde] tag#21 Sense Key : Illegal Request [current] [25890.996817] sd 4:0:0:0: [sde] tag#21 Add. Sense: Unaligned write command [25890.996819] sd 4:0:0:0: [sde] tag#21 CDB: Read(10) 28 00 08 0e f9 a8 00 00 20 00 [25890.996820] blk_update_request: I/O error, dev sde, sector 135199144 [25890.996821] bcache: bch_count_io_errors() sde3: IO error on reading dirty data from cache, recovering [25890.996829] ata5: EH complete [25890.997000] ------------[ cut here ]------------ [25890.997037] kernel BUG at /build/linux-Wgpe2M/linux-4.8.11/block/bio.c:1785! [25890.997077] invalid opcode: 0000 [#1] SMP [25890.997099] Modules linked in: cpufreq_powersave(E) cpufreq_conservative(E) cpufreq_userspace(E) nf_log_ipv4(E) nf_log_common(E) xt_tcpudp(E) ip6table_mangle(E) iptable_nat(E) nf_conntrack_ipv4(E) nf_defrag_ipv4(E) nf_nat_ipv4(E) nf_nat(E) xt_TCPMSS(E) xt_LOG(E) ipt_REJECT(E) nf_reject_ipv4(E) iptable_mangle(E) xt_multiport(E) xt_state(E) xt_limit(E) xt_conntrack(E) nf_conntrack_ftp(E) nf_conntrack(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) ip_tables(E) x_tables(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) nfs(E) lockd(E) grace(E) fscache(E) sunrpc(E) binfmt_misc(E) nbd(E) dm_crypt(E) xts(E) gf128mul(E) algif_skcipher(E) af_alg(E) intel_rapl(E) iTCO_wdt(E) iTCO_vendor_support(E) x86_pkg_temp_thermal(E) coretemp(E) kvm_intel(E) kvm(E) irqbypass(E) crct10dif_pclmul(E) crc32_pclmul(E) ghash_clmulni_intel(E) [25890.997571] cryptd(E) serio_raw(E) pcspkr(E) tpm_infineon(E) mgag200(E) ttm(E) drm_kms_helper(E) drm(E) hpilo(E) i2c_algo_bit(E) hpwdt(E) evdev(E) ipmi_si(E) ipmi_msghandler(E) acpi_power_meter(E) button(E) ie31200_edac(E) shpchp(E) edac_core(E) lpc_ich(E) mfd_core(E) tpm_tis(E) tpm_tis_core(E) tpm_rng(E) tpm(E) rng_core(E) autofs4(E) ext4(E) crc16(E) jbd2(E) fscrypto(E) mbcache(E) btrfs(E) dm_mod(E) raid456(E) async_raid6_recov(E) async_memcpy(E) async_pq(E) async_xor(E) async_tx(E) xor(E) raid6_pq(E) libcrc32c(E) crc32c_generic(E) raid1(E) md_mod(E) bcache(E) sg(E) sd_mod(E) hid_generic(E) usbhid(E) hid(E) crc32c_intel(E) psmouse(E) thermal(E) fjes(E) ahci(E) libahci(E) uhci_hcd(E) xhci_pci(E) ehci_pci(E) xhci_hcd(E) ehci_hcd(E) libata(E) tg3(E) ptp(E) pps_core(E) libphy(E) scsi_mod(E) usbcore(E) [25890.998061] usb_common(E) [25890.998075] CPU: 1 PID: 854 Comm: btrfs-transacti Tainted: G W E 4.8.0-0.bpo.2-amd64 #1 Debian 4.8.11-1~bpo8+1 [25890.998134] Hardware name: HP ProLiant MicroServer Gen8, BIOS J06 07/16/2015 [25890.998174] task: ffff8abb2733d040 task.stack: ffff8abb23d38000 [25890.998207] RIP: 0010:[<ffffffff9cef44f2>] [<ffffffff9cef44f2>] bio_split+0x82/0x90 [25890.998259] RSP: 0018:ffff8abb23d3bad0 EFLAGS: 00010246 [25890.998288] RAX: 0000000000000000 RBX: 0000000000003000 RCX: ffff8abb3331be00 [25890.998327] RDX: 0000000002400000 RSI: 0000000000000000 RDI: ffff8abb2c181920 [25890.998366] RBP: ffff8abb23d3bb70 R08: ffff8abb2c181920 R09: 0000160000000000 [25890.998404] R10: ffff8abb23d3bb30 R11: 00000000000000a8 R12: 0000000000000000 [25890.998443] R13: 0000000000000000 R14: ffff8abb3292b240 R15: 0000000000000000 [25890.998482] FS: 0000000000000000(0000) GS:ffff8abb3a240000(0000) knlGS:0000000000000000 [25890.998525] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [25890.998557] CR2: 00007fc62fb57000 CR3: 0000000128806000 CR4: 00000000001406e0 [25890.998596] Stack: [25890.998611] ffffffff9cf01626 7393cd638ab69a27 d7a3fabff65c2e46 ffff8abb32b2eb30 [25890.998658] ffff8abb3331be00 0006008000000000 ffff8abb23d3bb80 00000a0000000058 [25890.998704] 000000a800000000 ffff8abb2c181920 0000020200000000 0000000000000000 [25890.998751] Call Trace: [25890.998770] [<ffffffff9cf01626>] ? blk_queue_split+0x1f6/0x610 [25890.998804] [<ffffffff9cefc89f>] ? blk_queue_bio+0x4f/0x3b0 [25890.998837] [<ffffffff9cefae66>] ? generic_make_request+0x106/0x1f0 [25890.998875] [<ffffffff9cefafc6>] ? submit_bio+0x76/0x150 [25890.998906] [<ffffffff9cf030a8>] ? next_bio+0x18/0x40 [25890.998936] [<ffffffff9cf03225>] ? __blkdev_issue_discard+0x155/0x1b0 [25890.998973] [<ffffffff9cef1a54>] ? submit_bio_wait+0x54/0x80 [25890.999007] [<ffffffff9cf0341a>] ? blkdev_issue_discard+0x7a/0xd0 [25890.999065] [<ffffffffc055d97f>] ? btrfs_issue_discard+0x12f/0x180 [btrfs] [25890.999121] [<ffffffffc05649ef>] ? btrfs_discard_extent+0xbf/0x180 [btrfs] [25890.999175] [<ffffffffc05682f6>] ? btrfs_finish_extent_commit+0x116/0x250 [btrfs] [25890.999235] [<ffffffffc0581c05>] ? btrfs_commit_transaction+0x7f5/0xa30 [btrfs] [25890.999293] [<ffffffffc0581ed6>] ? start_transaction+0x96/0x4d0 [btrfs] [25890.999347] [<ffffffffc057c2de>] ? transaction_kthread+0x1ce/0x1f0 [btrfs] [25890.999400] [<ffffffffc057c110>] ? btrfs_cleanup_transaction+0x590/0x590 [btrfs] [25890.999442] [<ffffffff9cc9cecf>] ? kthread+0xdf/0x100 [25890.999473] [<ffffffff9cc2b78b>] ? __switch_to+0x2bb/0x710 [25890.999506] [<ffffffff9d1f3daf>] ? ret_from_fork+0x1f/0x40 [25890.999538] [<ffffffff9cc9cdf0>] ? kthread_park+0x50/0x50 [25890.999568] Code: 10 31 f6 44 89 e2 48 89 df e8 3b 3f 03 00 8b 73 28 48 89 ef e8 90 df ff ff 48 89 d8 5b 5d 41 5c c3 e8 33 fc ff ff 48 89 c3 eb bb <0f> 0b 0f 0b 31 c0 eb e9 66 0f 1f 44 00 00 0f 1f 44 00 00 48 8b [25890.999771] RIP [<ffffffff9cef44f2>] bio_split+0x82/0x90 [25891.001795] RSP <ffff8abb23d3bad0> -- 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
