[xilinx-xlnx:xlnx_rebase_v5.15 400/872] drivers/usb/gadget/function/f_tcm.c:340:2-12: alloc with no test, possible model on line 345 (fwd)
From: Julia Lawall <julia.lawall@inria.fr>
Date: 2022-02-09 11:29:42
Also in:
oe-kbuild-all
Hello,
Please check line 342, which seems to be missing an [i].
julia
---------- Forwarded message ----------
Date: Wed, 9 Feb 2022 17:21:42 +0800
From: kernel test robot <redacted>
To: kbuild@lists.01.org
Cc: lkp@intel.com, Julia Lawall <redacted>
Subject: [xilinx-xlnx:xlnx_rebase_v5.15 400/872]
drivers/usb/gadget/function/f_tcm.c:340:2-12: alloc with no test,
possible model on line 345
CC: kbuild-all@lists.01.org
CC: linux-arm-kernel@lists.infradead.org
TO: Quanyang Wang <redacted>
CC: Michal Simek <monstr@monstr.eu>
CC: Manish Narani <redacted>
tree: https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.15
head: 1183ce490adb103e5e569b8ebd74c50c885ddc05
commit: 52817ef9c056b35660cd1fd8cd02c3d3603c8059 [400/872] Revert "usb: function: f_tcm: Add support for getting alt interface number"
:::::: branch date: 8 days ago
:::::: commit date: 8 days ago
config: i386-randconfig-c021 (https://download.01.org/0day-ci/archive/20220209/202202091733.OwkhhpPA-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>
Reported-by: Julia Lawall <redacted>
cocci warnings: (new ones prefixed by >>)quoted
drivers/usb/gadget/function/f_tcm.c:340:2-12: alloc with no test, possible model on line 345
vim +340 drivers/usb/gadget/function/f_tcm.c
c6628548acf083 Rajnikant Bhojani 2022-01-26 331
c6628548acf083 Rajnikant Bhojani 2022-01-26 332 static int alloc_cmd_resource(struct f_uas *fu, int num, struct usb_ep *ep,
c6628548acf083 Rajnikant Bhojani 2022-01-26 333 void (*complete)(struct usb_ep *ep,
c6628548acf083 Rajnikant Bhojani 2022-01-26 334 struct usb_request *req))
c6628548acf083 Rajnikant Bhojani 2022-01-26 335 {
c6628548acf083 Rajnikant Bhojani 2022-01-26 336 int i;
c6628548acf083 Rajnikant Bhojani 2022-01-26 337
c6628548acf083 Rajnikant Bhojani 2022-01-26 338 fu->ncmd = num;
c6628548acf083 Rajnikant Bhojani 2022-01-26 339 for (i = 0; i < fu->ncmd; i++) {
c6628548acf083 Rajnikant Bhojani 2022-01-26 @340 fu->cmd[i] = kcalloc(fu->ncmd, sizeof(struct usbg_cdb),
c6628548acf083 Rajnikant Bhojani 2022-01-26 341 GFP_KERNEL);
c6628548acf083 Rajnikant Bhojani 2022-01-26 342 if (!fu->cmd)
c6628548acf083 Rajnikant Bhojani 2022-01-26 343 goto err_cmd;
c6628548acf083 Rajnikant Bhojani 2022-01-26 344
c6628548acf083 Rajnikant Bhojani 2022-01-26 @345 fu->cmd[i]->req = usb_ep_alloc_request(ep, GFP_KERNEL);
c6628548acf083 Rajnikant Bhojani 2022-01-26 346 if (!fu->cmd[i]->req)
c6628548acf083 Rajnikant Bhojani 2022-01-26 347 goto err_cmd;
c6628548acf083 Rajnikant Bhojani 2022-01-26 348
c6628548acf083 Rajnikant Bhojani 2022-01-26 349 fu->cmd[i]->buf = kmalloc(fu->ep_out->maxpacket, GFP_KERNEL);
c6628548acf083 Rajnikant Bhojani 2022-01-26 350 if (!fu->cmd[i]->buf)
c6628548acf083 Rajnikant Bhojani 2022-01-26 351 goto err_cmd;
c6628548acf083 Rajnikant Bhojani 2022-01-26 352
c6628548acf083 Rajnikant Bhojani 2022-01-26 353 fu->cmd[i]->req->complete = complete;
c6628548acf083 Rajnikant Bhojani 2022-01-26 354 fu->cmd[i]->req->buf = fu->cmd[i]->buf;
c6628548acf083 Rajnikant Bhojani 2022-01-26 355 fu->cmd[i]->req->length = fu->ep_out->maxpacket;
c6628548acf083 Rajnikant Bhojani 2022-01-26 356 fu->cmd[i]->req->context = fu;
c6628548acf083 Rajnikant Bhojani 2022-01-26 357 }
c6628548acf083 Rajnikant Bhojani 2022-01-26 358
c6628548acf083 Rajnikant Bhojani 2022-01-26 359 return 0;
c6628548acf083 Rajnikant Bhojani 2022-01-26 360 err_cmd:
c6628548acf083 Rajnikant Bhojani 2022-01-26 361 free_cmd_resource(fu, ep);
c6628548acf083 Rajnikant Bhojani 2022-01-26 362 return -ENOMEM;
c6628548acf083 Rajnikant Bhojani 2022-01-26 363 }
c6628548acf083 Rajnikant Bhojani 2022-01-26 364
:::::: The code at line 340 was first introduced by commit
:::::: c6628548acf08392524df4bdbeee080f6f5ecc43 usb: gadget: f_tcm: queue multiple commands request
:::::: TO: Rajnikant Bhojani [off-list ref]
:::::: CC: Michal Simek [off-list ref]
---
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