I'm unsure of the cause, but I found irq/40-mei_me consuming 100% CPU
and my disk full due to kern.log, syslog and messages rapidly growing in
size filled with these messages:
Dec 23 12:29:57 dukhat kernel: [336224.363138] mei_me 0000:00:16.0: reset:
wrong host start response
Dec 23 12:29:57 dukhat kernel: [336224.363140] mei_me 0000:00:16.0: unexpected
reset: dev_state = RESETTING
Dec 23 12:29:57 dukhat kernel: [336224.363152] mei_me 0000:00:16.0: reset:
unexpected enumeration response hbm.
Dec 23 12:29:57 dukhat kernel: [336224.363155] mei_me 0000:00:16.0: unexpected
reset: dev_state = RESETTING
Dec 23 12:29:57 dukhat kernel: [336224.363185] mei_me 0000:00:16.0: reset:
wrong host start response
Dec 23 12:29:57 dukhat kernel: [336224.363187] mei_me 0000:00:16.0: unexpected
reset: dev_state = RESETTING
Dec 23 12:29:57 dukhat kernel: [336224.363199] mei_me 0000:00:16.0: reset:
unexpected enumeration response hbm.
Dec 23 12:29:57 dukhat kernel: [336224.363201] mei_me 0000:00:16.0: unexpected
reset: dev_state = RESETTING
This patch rate-limits those specific messages to reduce the impact if
this problem ever recurs.
Signed-off-by: Ian Munsie <imun...@au1.ibm.com>
---
drivers/misc/mei/hbm.c | 4 ++--
drivers/misc/mei/init.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index 9b3a0fb..2ab8b1d 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -613,7 +613,7 @@ void mei_hbm_dispatch(struct mei_device *dev, struct
mei_msg_hdr *hdr)
dev->init_clients_timer = 0;
mei_hbm_enum_clients_req(dev);
} else {
- dev_err(&dev->pdev->dev, "reset: wrong host start
response\n");
+ dev_err_ratelimited(&dev->pdev->dev, "reset: wrong host
start response\n");
mei_reset(dev, 1);
return;
}
@@ -690,7 +690,7 @@ void mei_hbm_dispatch(struct mei_device *dev, struct
mei_msg_hdr *hdr)
/* first property reqeust */
mei_hbm_prop_req(dev);
} else {
- dev_err(&dev->pdev->dev, "reset: unexpected enumeration
response hbm.\n");
+ dev_err_ratelimited(&dev->pdev->dev, "reset: unexpected
enumeration response hbm.\n");
mei_reset(dev, 1);
return;
}
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index f7f3abb..edd3bb6 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -148,7 +148,7 @@ void mei_reset(struct mei_device *dev, int
interrupts_enabled)
dev->dev_state != MEI_DEV_POWER_UP);
if (unexpected)
- dev_warn(&dev->pdev->dev, "unexpected reset: dev_state = %s\n",
+ dev_warn_ratelimited(&dev->pdev->dev, "unexpected reset:
dev_state = %s\n",
mei_dev_state_str(dev->dev_state));
ret = mei_hw_reset(dev, interrupts_enabled);
--
1.8.4.rc3
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