qianfan <qianfanguijin@xxxxxxx> writes: >> This limits the rate of messages. Can you try if a this patch fixes behavior? > > Yes, this patch fixed the problem and watchdog doesn't reset again. > > Next is the console log when usb storage disconnected: [...] > cp: read error: Input/output error > # [ 218.253995] FAT-fs (sda1): FAT read failed (blocknr 1130) > > 'FAT read failed' error message printed only once. > > Interesting. Hm, message should print 10 times, then is suppressed. So this time, the test may not reproduced. Can your test reproduces the issue reliably? Well, anyway, the patch looks like working. Thanks. -- OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>