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drivers/staging/greybus/bootrom.c:298:35-39: ERROR: fw is NULL but dereferenced.

From kbuild test robot <fengguang.wu@intel.com>
Newsgroups linux.kernel
Subject drivers/staging/greybus/bootrom.c:298:35-39: ERROR: fw is NULL but dereferenced.
Date 2016-11-27 00:20 +0100
Message-ID <sHUqe-4EY-29@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a0d60e62ea5c88a9823410e9d0929a513e29dea2
commit: f44dd184634d401f5cf88a6d8b4a60d5ff4f417f Merge greybus driver tree into 4.8-rc6
date:   10 weeks ago


coccinelle warnings: (new ones prefixed by >>)

>> drivers/staging/greybus/bootrom.c:298:35-39: ERROR: fw is NULL but dereferenced.

vim +298 drivers/staging/greybus/bootrom.c

90f1b617 drivers/staging/greybus/firmware.c Viresh Kumar 2015-08-12  282  		dev_err(dev, "%s: error allocating response\n", __func__);
a956d939 drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-05-09  283  		ret = -ENOMEM;
a956d939 drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-05-09  284  		goto unlock;
90f1b617 drivers/staging/greybus/firmware.c Viresh Kumar 2015-08-12  285  	}
90f1b617 drivers/staging/greybus/firmware.c Viresh Kumar 2015-08-12  286  
90f1b617 drivers/staging/greybus/firmware.c Viresh Kumar 2015-08-12  287  	firmware_response = op->response->payload;
98645a9c drivers/staging/greybus/firmware.c Johan Hovold 2015-11-19  288  	memcpy(firmware_response->data, fw->data + offset, size);
90f1b617 drivers/staging/greybus/firmware.c Viresh Kumar 2015-08-12  289  
fc41c2da drivers/staging/greybus/firmware.c Eli Sennesh  2016-01-08  290  	dev_dbg(dev, "responding with firmware (offs = %u, size = %u)\n", offset,
fc41c2da drivers/staging/greybus/firmware.c Eli Sennesh  2016-01-08  291  		size);
fc41c2da drivers/staging/greybus/firmware.c Eli Sennesh  2016-01-08  292  
a956d939 drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-05-09  293  unlock:
a956d939 drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-05-09  294  	mutex_unlock(&bootrom->mutex);
a956d939 drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-05-09  295  
a956d939 drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-05-09  296  queue_work:
a956d939 drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-05-09  297  	/* Refresh timeout */
a4293e1d drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-06-22 @298  	if (!ret && (offset + size == fw->size))
a4293e1d drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-06-22  299  		next_request = NEXT_REQ_READY_TO_BOOT;
a4293e1d drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-06-22  300  	else
a4293e1d drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-06-22  301  		next_request = NEXT_REQ_GET_FIRMWARE;
a4293e1d drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-06-22  302  
dbb8cfeb drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-06-22  303  	gb_bootrom_set_timeout(bootrom, next_request, NEXT_REQ_TIMEOUT_MS);
a956d939 drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-05-09  304  
a956d939 drivers/staging/greybus/bootrom.c  Viresh Kumar 2016-05-09  305  	return ret;
90f1b617 drivers/staging/greybus/firmware.c Viresh Kumar 2015-08-12  306  }

:::::: The code at line 298 was first introduced by commit
:::::: a4293e1d4e6416477976ee3bd248589d3fc4bb19 greybus: bootrom: Enhance timeout error message

:::::: TO: Viresh Kumar <viresh.kumar@linaro.org>
:::::: CC: Greg Kroah-Hartman <gregkh@google.com>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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drivers/staging/greybus/bootrom.c:298:35-39: ERROR: fw is NULL but  dereferenced. kbuild test robot <fengguang.wu@intel.com> - 2016-11-27 00:20 +0100
  Re: drivers/staging/greybus/bootrom.c:298:35-39: ERROR: fw is NULL  but dereferenced. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-27 12:10 +0100
    Re: drivers/staging/greybus/bootrom.c:298:35-39: ERROR: fw is NULL  but dereferenced. Fengguang Wu <fengguang.wu@intel.com> - 2016-11-28 09:30 +0100
      Re: [kbuild-all] drivers/staging/greybus/bootrom.c:298:35-39: ERROR:  fw is NULL but dereferenced. Fengguang Wu <fengguang.wu@intel.com> - 2016-11-28 10:10 +0100
      Re: drivers/staging/greybus/bootrom.c:298:35-39: ERROR: fw is NULL  but dereferenced. Julia Lawall <julia.lawall@lip6.fr> - 2016-11-28 10:10 +0100

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