System crash in blk_finish_request() following fnic driver FCPIO_DATA_CNT_MISMATCH errors

Issue

• System crash in blk_finish_request() following fnic driver FCPIO_DATA_CNT_MISMATCH errors:

[1363892.434211] scsi host7: hdr status = FCPIO_DATA_CNT_MISMATCH
[1363892.434284] scsi host7: hdr status = FCPIO_DATA_CNT_MISMATCH
[1363892.434355] scsi host7: hdr status = FCPIO_DATA_CNT_MISMATCH
[1363966.283237] ------------[ cut here ]------------
[1363966.283420] kernel BUG at block/blk-core.c:2988!
[1363966.283584] invalid opcode: 0000 [#1] SMP 
....
[1363966.285156] CPU: 39 PID: 0 Comm: swapper/39 Kdump: loaded Tainted: G        W      ------------   3.10.0-1160.49.1.el7.x86_64 #1
[1363966.285703] Hardware name: Cisco Systems Inc UCSB-B200-M5/UCSB-B200-M5, BIOS B200M5.4.1.1d.0.0609200543 06/09/2020
[1363966.286016] task: ffff892c9e923180 ti: ffff892c9e934000 task.ti: ffff892c9e934000
[1363966.286344] RIP: 0010:[<ffffffff91b569a3>]  [<ffffffff91b569a3>] blk_finish_request+0x123/0x130
[1363966.286695] RSP: 0018:ffff896afd7c3dc0  EFLAGS: 00010087
[1363966.287046] RAX: 00000000100b0005 RBX: ffff896a93a98d80 RCX: 0000000000000000
[1363966.287413] RDX: 0000000800000000 RSI: 0000000000000000 RDI: ffff896a93a98d80
[1363966.287790] RBP: ffff896afd7c3dd8 R08: ffff896af4ec4500 R09: 0000000100400026
[1363966.288176] R10: 00000000f4ec5c01 R11: ffff896af4ec4500 R12: ffff892af68fa700
[1363966.288569] R13: 0000000000000000 R14: 0000000000000000 R15: ffff892af68fa700
[1363966.288968] FS:  0000000000000000(0000) GS:ffff896afd7c0000(0000) knlGS:0000000000000000
[1363966.289379] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[1363966.289798] CR2: 00007f042f46f000 CR3: 0000006471610000 CR4: 00000000007607e0
[1363966.290232] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[1363966.290673] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[1363966.291118] PKRU: 00000000
[1363966.291566] Call Trace:
[1363966.292015]  <IRQ> 
[1363966.292025]  [<ffffffff91cee2d6>] scsi_end_request+0x116/0x1e0
[1363966.292937]  [<ffffffff91cee568>] scsi_io_completion+0x168/0x720
[1363966.293414]  [<ffffffff91ce385c>] scsi_finish_command+0xdc/0x140
[1363966.293895]  [<ffffffff91cedab0>] scsi_softirq_done+0x130/0x160
[1363966.294384]  [<ffffffff91b5dd36>] blk_done_softirq+0x96/0xc0
....
[1363966.303076] RIP  [<ffffffff91b569a3>] blk_finish_request+0x123/0x130
[1363966.303680]  RSP <ffff896afd7c3dc0>