From: Jack Wang <jinpu.w...@profitbricks.com>

This avoid soft lockup below:
[ 2328.328429] Call Trace:
[ 2328.328433]  vprintk_emit+0x229/0x2e0
[ 2328.328436]  ? t10_pi_type3_verify_ip+0x20/0x20
[ 2328.328437]  printk+0x52/0x6e
[ 2328.328439]  t10_pi_verify+0x9e/0xf0
[ 2328.328441]  bio_integrity_process+0x12e/0x220
[ 2328.328442]  ? t10_pi_type1_verify_crc+0x20/0x20
[ 2328.328443]  bio_integrity_verify_fn+0xde/0x140
[ 2328.328447]  process_one_work+0x13f/0x370
[ 2328.328449]  worker_thread+0x62/0x3d0
[ 2328.328450]  ? rescuer_thread+0x2f0/0x2f0
[ 2328.328452]  kthread+0x116/0x150
[ 2328.328454]  ? __kthread_parkme+0x70/0x70
[ 2328.328457]  ret_from_fork+0x35/0x40

Signed-off-by: Jack Wang <jinpu.w...@profitbricks.com>
---
 block/t10-pi.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/block/t10-pi.c b/block/t10-pi.c
index a98db38..35967d5 100644
--- a/block/t10-pi.c
+++ b/block/t10-pi.c
@@ -84,10 +84,12 @@ static blk_status_t t10_pi_verify(struct blk_integrity_iter 
*iter,
 
                        if (be32_to_cpu(pi->ref_tag) !=
                            lower_32_bits(iter->seed)) {
-                               pr_err("%s: ref tag error at location %llu " \
-                                      "(rcvd %u)\n", iter->disk_name,
-                                      (unsigned long long)
-                                      iter->seed, be32_to_cpu(pi->ref_tag));
+                               pr_err_ratelimited("%s: ref tag error at "
+                                                  "location %llu (rcvd %u)\n",
+                                                  iter->disk_name,
+                                                  (unsigned long long)
+                                                  iter->seed,
+                                                  be32_to_cpu(pi->ref_tag));
                                return BLK_STS_PROTECTION;
                        }
                        break;
@@ -101,10 +103,12 @@ static blk_status_t t10_pi_verify(struct 
blk_integrity_iter *iter,
                csum = fn(iter->data_buf, iter->interval);
 
                if (pi->guard_tag != csum) {
-                       pr_err("%s: guard tag error at sector %llu " \
-                              "(rcvd %04x, want %04x)\n", iter->disk_name,
-                              (unsigned long long)iter->seed,
-                              be16_to_cpu(pi->guard_tag), be16_to_cpu(csum));
+                       pr_err_ratelimited("%s: guard tag error at sector %llu "
+                                          "(rcvd %04x, want %04x)\n",
+                                          iter->disk_name,
+                                          (unsigned long long)iter->seed,
+                                          be16_to_cpu(pi->guard_tag),
+                                          be16_to_cpu(csum));
                        return BLK_STS_PROTECTION;
                }
 
-- 
2.7.4

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