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BUG: KMSAN: uninit-value in __arch_swab32 arch/x86/include/uapi/asm/swab.h:10 [inline]
BUG: KMSAN: uninit-value in __fswab32 include/uapi/linux/swab.h:59 [inline]
BUG: KMSAN: uninit-value in crypto_inc+0x2ab/0x2f0 crypto/algapi.c:977
CPU: 0 PID: 5959 Comm: syz-executor1 Not tainted 4.16.0+ #84
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:53
 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
 __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:676
 __arch_swab32 arch/x86/include/uapi/asm/swab.h:10 [inline]
 __fswab32 include/uapi/linux/swab.h:59 [inline]
 crypto_inc+0x2ab/0x2f0 crypto/algapi.c:977
 drbg_ctr_update+0x3a04/0x3d10 crypto/drbg.c:528
 __drbg_seed crypto/drbg.c:991 [inline]
 drbg_seed+0xcba/0xe90 crypto/drbg.c:1124
 drbg_instantiate crypto/drbg.c:1500 [inline]
 drbg_kcapi_seed+0x1c97/0x2270 crypto/drbg.c:1880
 crypto_rng_reset+0x262/0x310 crypto/rng.c:52
 rng_setkey+0x8b/0xa0 crypto/algif_rng.c:167
 alg_setkey crypto/af_alg.c:223 [inline]
 alg_setsockopt+0x6c5/0x740 crypto/af_alg.c:256
 SYSC_setsockopt+0x4b8/0x570 net/socket.c:1849
 SyS_setsockopt+0x76/0xa0 net/socket.c:1828
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x455319
RSP: 002b:00007fde56bdbc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fde56bdc6d4 RCX: 0000000000455319
RDX: 0000000000000001 RSI: 0000000000000117 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000020000040 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000510 R14: 00000000006faa20 R15: 0000000000000000

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
 kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
 kmsan_memcpy_origins+0x11d/0x170 mm/kmsan/kmsan.c:526
 __msan_memcpy+0x19f/0x1f0 mm/kmsan/kmsan_instr.c:470
 drbg_ctr_update+0x393a/0x3d10 crypto/drbg.c:526
 __drbg_seed crypto/drbg.c:991 [inline]
 drbg_seed+0xcba/0xe90 crypto/drbg.c:1124
 drbg_instantiate crypto/drbg.c:1500 [inline]
 drbg_kcapi_seed+0x1c97/0x2270 crypto/drbg.c:1880
 crypto_rng_reset+0x262/0x310 crypto/rng.c:52
 rng_setkey+0x8b/0xa0 crypto/algif_rng.c:167
 alg_setkey crypto/af_alg.c:223 [inline]
 alg_setsockopt+0x6c5/0x740 crypto/af_alg.c:256
 SYSC_setsockopt+0x4b8/0x570 net/socket.c:1849
 SyS_setsockopt+0x76/0xa0 net/socket.c:1828
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
 kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
 kmsan_memcpy_origins+0x11d/0x170 mm/kmsan/kmsan.c:526
 __msan_memcpy+0x19f/0x1f0 mm/kmsan/kmsan_instr.c:470
 drbg_kcapi_sym_ctr+0x6e8/0x840 crypto/drbg.c:1763
 drbg_ctr_update+0x349a/0x3d10 crypto/drbg.c:515
 __drbg_seed crypto/drbg.c:991 [inline]
 drbg_seed+0xcba/0xe90 crypto/drbg.c:1124
 drbg_instantiate crypto/drbg.c:1500 [inline]
 drbg_kcapi_seed+0x1c97/0x2270 crypto/drbg.c:1880
 crypto_rng_reset+0x262/0x310 crypto/rng.c:52
 rng_setkey+0x8b/0xa0 crypto/algif_rng.c:167
 alg_setkey crypto/af_alg.c:223 [inline]
 alg_setsockopt+0x6c5/0x740 crypto/af_alg.c:256
 SYSC_setsockopt+0x4b8/0x570 net/socket.c:1849
 SyS_setsockopt+0x76/0xa0 net/socket.c:1828
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
 kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:521
 __crypto_xor+0x23c/0x16b0 crypto/algapi.c:1012
 crypto_xor_cpy include/crypto/algapi.h:229 [inline]
 ctr_crypt_final arch/x86/crypto/aesni-intel_glue.c:479 [inline]
 ctr_crypt+0x432/0x4f0 arch/x86/crypto/aesni-intel_glue.c:521
 crypto_skcipher_encrypt include/crypto/skcipher.h:443 [inline]
 simd_skcipher_encrypt+0x221/0x320 crypto/simd.c:77
 crypto_skcipher_encrypt include/crypto/skcipher.h:443 [inline]
 drbg_kcapi_sym_ctr+0x463/0x840 crypto/drbg.c:1756
 drbg_ctr_update+0x349a/0x3d10 crypto/drbg.c:515
 __drbg_seed crypto/drbg.c:991 [inline]
 drbg_seed+0xcba/0xe90 crypto/drbg.c:1124
 drbg_instantiate crypto/drbg.c:1500 [inline]
 drbg_kcapi_seed+0x1c97/0x2270 crypto/drbg.c:1880
 crypto_rng_reset+0x262/0x310 crypto/rng.c:52
 rng_setkey+0x8b/0xa0 crypto/algif_rng.c:167
 alg_setkey crypto/af_alg.c:223 [inline]
 alg_setsockopt+0x6c5/0x740 crypto/af_alg.c:256
 SYSC_setsockopt+0x4b8/0x570 net/socket.c:1849
 SyS_setsockopt+0x76/0xa0 net/socket.c:1828
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Local variable description: ----keystream.i@ctr_crypt
Variable was created at:
 ctr_crypt+0x4a/0x4f0 arch/x86/crypto/aesni-intel_glue.c:504
 crypto_skcipher_encrypt include/crypto/skcipher.h:443 [inline]
 simd_skcipher_encrypt+0x221/0x320 crypto/simd.c:77
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