Hello, I have reported the issue already to the bugtracker but I'm not sure if the problem is directly related to the mpt3sas driver. https://bugzilla.kernel.org/show_bug.cgi?id=201583 I also added a WARN_ON maybe this helps: [ 4524.120234] sd 0:0:0:0: [sda] tag#2163 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK [ 4524.120250] sd 0:0:0:0: [sda] tag#2163 CDB: Read(16) 88 00 00 00 00 00 91 7b 85 48 00 00 00 20 00 00 [ 4524.120278] WARNING: CPU: 5 PID: 174 at block/blk-core.c:258 blk_update_request+0x243/0x300 [ 4524.120284] Modules linked in: ipt_MASQUERADE xt_owner xt_nat tun nct6775 hwmon_vid xt_recent ipt_REJECT nf_reject_i pv4 xt_addrtype xt_hashlimit xt_mark xt_conntrack ipt_rpfilter iptable_mangle iptable_nat nf_nat_ipv4 xt_CT xt_tcpudp i ptable_raw nfnetlink_log xt_NFLOG nf_log_ipv4 nf_log_common xt_LOG nf_conntrack_sane nf_conntrack_netlink nfnetlink nf_ nat_tftp nf_nat_snmp_basic nf_conntrack_snmp nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda nf_nat nf_conntrack_tftp nf_conntrack_sip nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netbios_n s nf_conntrack_broadcast nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp ts_kmp nf_conntrack_amanda nf_conntrack nf _defrag_ipv4 nf_defrag_ipv6 iptable_filter ip_tables x_tables wireguard ip6_udp_tunnel udp_tunnel [ 4524.120364] x86_pkg_temp_thermal kvm_intel kvm e1000e i915 irqbypass iosf_mbi nfsd auth_rpcgss macvlan atl1c fuse n fs lockd grace sunrpc usb_storage mptsas mptscsih mptbase sr_mod cdrom ixgbe ptp pps_core mdio [ 4524.120402] CPU: 5 PID: 174 Comm: scsi_eh_0 Not tainted 4.19.0 #16 [ 4524.120407] Hardware name: MSI MS-7A59/Z270 SLI PLUS (MS-7A59), BIOS 1.A0 06/30/2018 [ 4524.120414] RIP: 0010:blk_update_request+0x243/0x300 [ 4524.120420] Code: bd fb ff ff ff e9 1d fe ff ff 41 0f b6 54 24 14 83 ea 20 83 fa 03 76 2f 41 f6 44 24 19 08 75 27 41 80 ff 0d 0f 87 a7 00 00 00 <0f> 0b 48 c7 c6 e0 56 e6 81 48 c7 c7 a0 8b 29 82 e8 e8 f1 4b 00 85 [ 4524.120428] RSP: 0018:ffff88084bc77dc0 EFLAGS: 00010293 [ 4524.120434] RAX: 000000000000000a RBX: 0000000000004000 RCX: 0000000000000000 [ 4524.120439] RDX: 00000000ffffffe0 RSI: 000000000000000a RDI: ffff880816a59240 [ 4524.120444] RBP: ffff88084c5cf000 R08: 0000000000004000 R09: 0000000000000395 [ 4524.120449] R10: 0000000000000016 R11: ffff88086b90df00 R12: ffff880816a59240 [ 4524.120453] R13: 00000000fffffffb R14: 000000000000000a R15: 000000000000000a [ 4524.120459] FS: 0000000000000000(0000) GS:ffff88086ed40000(0000) knlGS:0000000000000000 [ 4524.120464] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4524.120469] CR2: 00007fffcab840d8 CR3: 0000000002208001 CR4: 00000000001606e0 [ 4524.120474] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 4524.120478] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 4524.120482] Call Trace: [ 4524.120497] scsi_end_request+0x30/0x2f0 [ 4524.120505] scsi_io_completion+0x468/0x660 [ 4524.120512] scsi_eh_flush_done_q+0x130/0x1c0 [ 4524.120518] ? scsi_handle_queue_ramp_up+0xb0/0xb0 [ 4524.120524] scsi_error_handler+0x3fa/0x5a0 [ 4524.120532] kthread+0x151/0x170 [ 4524.120538] ? scsi_eh_get_sense+0x200/0x200 [ 4524.120544] ? kthread_park+0x80/0x80 [ 4524.120550] ret_from_fork+0x1f/0x30 [ 4524.120558] ---[ end trace 48f130158f791923 ]--
