# git rev-parse -q --verify 55b3209acbb01cb02b1ee6b1afe80d83b1aab36d^{commit}
55b3209acbb01cb02b1ee6b1afe80d83b1aab36d
already have revision, skipping fetch
# git checkout -q -f -B kisskb 55b3209acbb01cb02b1ee6b1afe80d83b1aab36d
# git clean -qxdf
# < git log -1
# commit 55b3209acbb01cb02b1ee6b1afe80d83b1aab36d
# Author: Iuliana Prodan <iuliana.prodan@nxp.com>
# Date:   Tue Apr 7 18:58:45 2020 +0300
# 
#     crypto: caam - fix the address of the last entry of S/G
#     
#     For skcipher algorithms, the input, output HW S/G tables
#     look like this: [IV, src][dst, IV]
#     Now, we can have 2 conditions here:
#     - there is no IV;
#     - src and dst are equal (in-place encryption) and scattered
#     and the error is an "off-by-one" in the HW S/G table.
#     
#     This issue was seen with KASAN:
#     BUG: KASAN: slab-out-of-bounds in skcipher_edesc_alloc+0x95c/0x1018
#     
#     Read of size 4 at addr ffff000022a02958 by task cryptomgr_test/321
#     
#     CPU: 2 PID: 321 Comm: cryptomgr_test Not tainted
#     5.6.0-rc1-00165-ge4ef8383-dirty #4
#     Hardware name: LS1046A RDB Board (DT)
#     Call trace:
#      dump_backtrace+0x0/0x260
#      show_stack+0x14/0x20
#      dump_stack+0xe8/0x144
#      print_address_description.isra.11+0x64/0x348
#      __kasan_report+0x11c/0x230
#      kasan_report+0xc/0x18
#      __asan_load4+0x90/0xb0
#      skcipher_edesc_alloc+0x95c/0x1018
#      skcipher_encrypt+0x84/0x150
#      crypto_skcipher_encrypt+0x50/0x68
#      test_skcipher_vec_cfg+0x4d4/0xc10
#      test_skcipher_vec+0x178/0x1d8
#      alg_test_skcipher+0xec/0x230
#      alg_test.part.44+0x114/0x4a0
#      alg_test+0x1c/0x60
#      cryptomgr_test+0x34/0x58
#      kthread+0x1b8/0x1c0
#      ret_from_fork+0x10/0x18
#     
#     Allocated by task 321:
#      save_stack+0x24/0xb0
#      __kasan_kmalloc.isra.10+0xc4/0xe0
#      kasan_kmalloc+0xc/0x18
#      __kmalloc+0x178/0x2b8
#      skcipher_edesc_alloc+0x21c/0x1018
#      skcipher_encrypt+0x84/0x150
#      crypto_skcipher_encrypt+0x50/0x68
#      test_skcipher_vec_cfg+0x4d4/0xc10
#      test_skcipher_vec+0x178/0x1d8
#      alg_test_skcipher+0xec/0x230
#      alg_test.part.44+0x114/0x4a0
#      alg_test+0x1c/0x60
#      cryptomgr_test+0x34/0x58
#      kthread+0x1b8/0x1c0
#      ret_from_fork+0x10/0x18
#     
#     Freed by task 0:
#     (stack is not available)
#     
#     The buggy address belongs to the object at ffff000022a02800
#      which belongs to the cache dma-kmalloc-512 of size 512
#     The buggy address is located 344 bytes inside of
#      512-byte region [ffff000022a02800, ffff000022a02a00)
#     The buggy address belongs to the page:
#     page:fffffe00006a8000 refcount:1 mapcount:0 mapping:ffff00093200c400
#     index:0x0 compound_mapcount: 0
#     flags: 0xffff00000010200(slab|head)
#     raw: 0ffff00000010200 dead000000000100 dead000000000122 ffff00093200c400
#     raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
#     page dumped because: kasan: bad access detected
#     
#     Memory state around the buggy address:
#      ffff000022a02800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
#      ffff000022a02880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
#     >ffff000022a02900: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc
#                                                         ^
#      ffff000022a02980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
#      ffff000022a02a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
#     
#     Fixes: 334d37c9e263 ("crypto: caam - update IV using HW support")
#     Cc: <stable@vger.kernel.org> # v5.3+
#     Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
#     Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
#     Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 55b3209acbb01cb02b1ee6b1afe80d83b1aab36d
# < make -s -j 24 ARCH=x86_64 O=/kisskb/build/crypto_x86_64-allnoconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  allnoconfig
# < make -s -j 24 ARCH=x86_64 O=/kisskb/build/crypto_x86_64-allnoconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 24 ARCH=x86_64 O=/kisskb/build/crypto_x86_64-allnoconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 24 ARCH=x86_64 O=/kisskb/build/crypto_x86_64-allnoconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/crypto_x86_64-allnoconfig_x86_64-gcc8
# Build took: 0:00:25.823871