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Message-ID: <202310182253.bcb9JcyJ-lkp@intel.com>
Date: Wed, 18 Oct 2023 22:42:11 +0800
From: kernel test robot <lkp@...el.com>
To: Jeffrey Hugo <quic_jhugo@...cinc.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Jacek Lawrynowicz <jacek.lawrynowicz@...ux.intel.com>,
Carl Vanderlip <quic_carlv@...cinc.com>,
Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@...cinc.com>,
Stanislaw Gruszka <stanislaw.gruszka@...ux.intel.com>
Subject: drivers/accel/qaic/qaic_control.c:348:17: warning: array subscript
'struct wrapper_msg[0]' is partly outside array bounds of 'unsigned
char[44]'
Hi Jeffrey,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 06dc10eae55b5ceabfef287a7e5f16ceea204aa0
commit: 759662e4f1f8cd6ea0ec466e10cf29fe7c1fec36 accel/qaic: Add qaic driver to the build system
date: 7 months ago
config: i386-buildonly-randconfig-006-20230906 (https://download.01.org/0day-ci/archive/20231018/202310182253.bcb9JcyJ-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231018/202310182253.bcb9JcyJ-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310182253.bcb9JcyJ-lkp@intel.com/
All warnings (new ones prefixed by >>):
In function 'add_wrapper',
inlined from 'abort_dma_cont' at drivers/accel/qaic/qaic_control.c:1107:12,
inlined from 'qaic_manage_msg_xfer' at drivers/accel/qaic/qaic_control.c:1165:9:
>> drivers/accel/qaic/qaic_control.c:348:17: warning: array subscript 'struct wrapper_msg[0]' is partly outside array bounds of 'unsigned char[44]' [-Warray-bounds]
348 | w->head = wrappers;
| ~~~~~~~~^~~~~~~~~~
In file included from include/linux/fs.h:45,
from include/linux/huge_mm.h:8,
from include/linux/mm.h:855,
from include/linux/scatterlist.h:8,
from include/linux/dma-mapping.h:10,
from drivers/accel/qaic/qaic_control.c:10:
In function 'kmalloc',
inlined from 'kzalloc' at include/linux/slab.h:720:9,
inlined from 'add_wrapper' at drivers/accel/qaic/qaic_control.c:342:26,
inlined from 'abort_dma_cont' at drivers/accel/qaic/qaic_control.c:1107:12,
inlined from 'qaic_manage_msg_xfer' at drivers/accel/qaic/qaic_control.c:1165:9:
include/linux/slab.h:580:24: note: object of size 44 allocated by 'kmalloc_trace'
580 | return kmalloc_trace(
| ^~~~~~~~~~~~~~
581 | kmalloc_caches[kmalloc_type(flags)][index],
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
582 | flags, size);
| ~~~~~~~~~~~~
In function 'abort_dma_cont',
inlined from 'qaic_manage_msg_xfer' at drivers/accel/qaic/qaic_control.c:1165:9:
drivers/accel/qaic/qaic_control.c:1121:22: warning: array subscript 'struct wrapper_msg[0]' is partly outside array bounds of 'unsigned char[44]' [-Warray-bounds]
1121 | wrapper->len = size;
| ~~~~~~~~~~~~~^~~~~~
In function 'kmalloc',
inlined from 'kzalloc' at include/linux/slab.h:720:9,
inlined from 'add_wrapper' at drivers/accel/qaic/qaic_control.c:342:26,
inlined from 'abort_dma_cont' at drivers/accel/qaic/qaic_control.c:1107:12,
inlined from 'qaic_manage_msg_xfer' at drivers/accel/qaic/qaic_control.c:1165:9:
include/linux/slab.h:580:24: note: object of size 44 allocated by 'kmalloc_trace'
580 | return kmalloc_trace(
| ^~~~~~~~~~~~~~
581 | kmalloc_caches[kmalloc_type(flags)][index],
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
582 | flags, size);
| ~~~~~~~~~~~~
vim +348 drivers/accel/qaic/qaic_control.c
129776ac2e38231 Jeffrey Hugo 2023-03-27 339
129776ac2e38231 Jeffrey Hugo 2023-03-27 340 static struct wrapper_msg *add_wrapper(struct wrapper_list *wrappers, u32 size)
129776ac2e38231 Jeffrey Hugo 2023-03-27 341 {
129776ac2e38231 Jeffrey Hugo 2023-03-27 342 struct wrapper_msg *w = kzalloc(size, GFP_KERNEL);
129776ac2e38231 Jeffrey Hugo 2023-03-27 343
129776ac2e38231 Jeffrey Hugo 2023-03-27 344 if (!w)
129776ac2e38231 Jeffrey Hugo 2023-03-27 345 return NULL;
129776ac2e38231 Jeffrey Hugo 2023-03-27 346 list_add_tail(&w->list, &wrappers->list);
129776ac2e38231 Jeffrey Hugo 2023-03-27 347 kref_init(&w->ref_count);
129776ac2e38231 Jeffrey Hugo 2023-03-27 @348 w->head = wrappers;
129776ac2e38231 Jeffrey Hugo 2023-03-27 349 return w;
129776ac2e38231 Jeffrey Hugo 2023-03-27 350 }
129776ac2e38231 Jeffrey Hugo 2023-03-27 351
:::::: The code at line 348 was first introduced by commit
:::::: 129776ac2e38231fa9c02ce20e116c99de291666 accel/qaic: Add control path
:::::: TO: Jeffrey Hugo <quic_jhugo@...cinc.com>
:::::: CC: Jacek Lawrynowicz <jacek.lawrynowicz@...ux.intel.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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