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Eric Biggers f9c9bdb513 crypto: x86/chacha - avoid sleeping under kernel_fpu_begin() 
Passing atomic=true to skcipher_walk_virt() only makes the later
skcipher_walk_done() calls use atomic memory allocations, not
skcipher_walk_virt() itself.  Thus, we have to move it outside of the
preemption-disabled region (kernel_fpu_begin()/kernel_fpu_end()).

(skcipher_walk_virt() only allocates memory for certain layouts of the
input scatterlist, hence why I didn't notice this earlier...)

Reported-by: syzbot+9bf843c33f782d73ae7d@syzkaller.appspotmail.com
Fixes: 4af7826187 ("crypto: x86/chacha20 - add XChaCha20 support")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-12-23 11:52:44 +08:00
..
alpha memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
arc mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
arm crypto: arm/nhpoly1305 - add NEON-accelerated NHPoly1305 2018-11-20 14:26:56 +08:00
arm64 crypto: arm64/chacha - use combined SIMD/ALU routine for more speed 2018-12-13 18:24:55 +08:00
c6x c6x changes for 4.20 2018-10-31 15:39:25 -07:00
csky csky: dtb Kbuild fixup patches for linux-4.20-rc1 2018-11-01 09:04:30 -07:00
h8300 mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
hexagon mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
ia64 memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
m68k memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
microblaze memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
mips Kbuild updates for v4.20 (2nd) 2018-11-03 10:47:33 -07:00
nds32 mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
nios2 mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
openrisc mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
parisc mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
powerpc Kbuild updates for v4.20 (2nd) 2018-11-03 10:47:33 -07:00
riscv RISC-V: refresh defconfig 2018-11-01 17:04:07 -07:00
s390 crypto: drop mask=CRYPTO_ALG_ASYNC from 'cipher' tfm allocations 2018-11-20 14:26:55 +08:00
sh mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
sparc crypto: remove useless initializations of cra_list 2018-11-20 14:26:55 +08:00
um Merge branch 'for-linus-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml 2018-10-31 15:46:16 -07:00
unicore32 memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
x86 crypto: x86/chacha - avoid sleeping under kernel_fpu_begin() 2018-12-23 11:52:44 +08:00
xtensa Xtensa fixes and cleanups for v4.20: 2018-11-01 14:32:43 -07:00
.gitignore
Kconfig New gcc plugin: stackleak 2018-11-01 11:46:27 -07:00