* [kees:kspp/fortify/latest 8/10] include/linux/string.h:309:4: error: call to '__read_overflow2' declared with attribute error: detected read beyond size of object passed as 2nd parameter
@ 2017-07-02 8:42 kbuild test robot
0 siblings, 0 replies; only message in thread
From: kbuild test robot @ 2017-07-02 8:42 UTC (permalink / raw)
To: Daniel Micay
Cc: kbuild-all, Kees Cook, Andrew Morton, Linux Memory Management List
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Hi Daniel,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git kspp/fortify/latest
head: 9b063bdf236e2a4f5370ba2e48dac5951e43a948
commit: d481d95b725d2abc7ed31f2f8c4c95c2bd8b0282 [8/10] include/linux/string.h: add the option of fortified string.h functions
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
git checkout d481d95b725d2abc7ed31f2f8c4c95c2bd8b0282
# save the attached .config to linux build tree
make ARCH=x86_64
All errors (new ones prefixed by >>):
include/linux/compiler.h:264:8: sparse: attribute 'no_sanitize_address': unknown attribute
In file included from include/linux/bitmap.h:8:0,
from include/linux/cpumask.h:11,
from arch/x86/include/asm/cpumask.h:4,
from arch/x86/include/asm/msr.h:10,
from arch/x86/include/asm/processor.h:20,
from arch/x86/include/asm/cpufeature.h:4,
from arch/x86/include/asm/thread_info.h:52,
from include/linux/thread_info.h:37,
from arch/x86/include/asm/preempt.h:6,
from include/linux/preempt.h:80,
from include/linux/spinlock.h:50,
from include/linux/seqlock.h:35,
from include/linux/time.h:5,
from include/linux/stat.h:18,
from include/linux/module.h:10,
from drivers/net/wireless/ray_cs.c:32:
In function 'memcpy',
inlined from 'init_startup_params' at drivers/net/wireless/ray_cs.c:600:3,
inlined from 'ray_init' at drivers/net/wireless/ray_cs.c:511:2,
inlined from 'ray_config' at drivers/net/wireless/ray_cs.c:427:6,
inlined from 'ray_probe' at drivers/net/wireless/ray_cs.c:326:9:
>> include/linux/string.h:309:4: error: call to '__read_overflow2' declared with attribute error: detected read beyond size of object passed as 2nd parameter
__read_overflow2();
^~~~~~~~~~~~~~~~~~
--
include/linux/compiler.h:264:8: sparse: attribute 'no_sanitize_address': unknown attribute
In file included from include/linux/bitmap.h:8:0,
from include/linux/cpumask.h:11,
from arch/x86/include/asm/cpumask.h:4,
from arch/x86/include/asm/msr.h:10,
from arch/x86/include/asm/processor.h:20,
from arch/x86/include/asm/cpufeature.h:4,
from arch/x86/include/asm/thread_info.h:52,
from include/linux/thread_info.h:37,
from arch/x86/include/asm/preempt.h:6,
from include/linux/preempt.h:80,
from include/linux/spinlock.h:50,
from include/linux/mmzone.h:7,
from include/linux/gfp.h:5,
from include/linux/slab.h:14,
from drivers/scsi/csiostor/csio_lnode.c:37:
In function 'memcpy',
inlined from 'csio_append_attrib' at drivers/scsi/csiostor/csio_lnode.c:248:2,
inlined from 'csio_ln_fdmi_dprt_cbfn' at drivers/scsi/csiostor/csio_lnode.c:471:2:
>> include/linux/string.h:309:4: error: call to '__read_overflow2' declared with attribute error: detected read beyond size of object passed as 2nd parameter
__read_overflow2();
^~~~~~~~~~~~~~~~~~
In function 'memcpy',
inlined from 'csio_append_attrib' at drivers/scsi/csiostor/csio_lnode.c:248:2,
inlined from 'csio_ln_fdmi_rhba_cbfn' at drivers/scsi/csiostor/csio_lnode.c:337:2:
>> include/linux/string.h:309:4: error: call to '__read_overflow2' declared with attribute error: detected read beyond size of object passed as 2nd parameter
__read_overflow2();
^~~~~~~~~~~~~~~~~~
vim +/__read_overflow2 +309 include/linux/string.h
303 size_t p_size = __builtin_object_size(p, 0);
304 size_t q_size = __builtin_object_size(q, 0);
305 if (__builtin_constant_p(size)) {
306 if (p_size < size)
307 __write_overflow();
308 if (q_size < size)
> 309 __read_overflow2();
310 }
311 if (p_size < size || q_size < size)
312 fortify_panic(__func__);
---
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https://lists.01.org/pipermail/kbuild-all Intel Corporation
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