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author | Arnd Bergmann <arnd@arndb.de> | 2019-07-24 20:51:55 +0200 |
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committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-08-02 14:44:32 +1000 |
commit | dec0fb3946c478e7bb6165a1b7a03092ceefd419 (patch) | |
tree | abbf9c5080bb67997f3547aa956a9a9fd5200fcd /crypto/aegis.h | |
parent | 3bd4952853d69659e58d1d4a4964383cb536b5be (diff) |
crypto: jitterentropy - build without sanitizer
Recent clang-9 snapshots double the kernel stack usage when building
this file with -O0 -fsanitize=kernel-hwaddress, compared to clang-8
and older snapshots, this changed between commits svn364966 and
svn366056:
crypto/jitterentropy.c:516:5: error: stack frame size of 2640 bytes in function 'jent_entropy_init' [-Werror,-Wframe-larger-than=]
int jent_entropy_init(void)
^
crypto/jitterentropy.c:185:14: error: stack frame size of 2224 bytes in function 'jent_lfsr_time' [-Werror,-Wframe-larger-than=]
static __u64 jent_lfsr_time(struct rand_data *ec, __u64 time, __u64 loop_cnt)
^
I prepared a reduced test case in case any clang developers want to
take a closer look, but from looking at the earlier output it seems
that even with clang-8, something was very wrong here.
Turn off any KASAN and UBSAN sanitizing for this file, as that likely
clashes with -O0 anyway. Turning off just KASAN avoids the warning
already, but I suspect both of these have undesired side-effects
for jitterentropy.
Link: https://godbolt.org/z/fDcwZ5
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/aegis.h')
0 files changed, 0 insertions, 0 deletions