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KMSAN: uninit-value in gf128mul_init_4k_lle

Status: closed as invalid on 2018/09/19 11:53
Subsystems: crypto
[Documentation on labels]
First crash: 2204d, last: 2190d

Sample crash report:
==================================================================
BUG: KMSAN: uninit-value in __arch_swab64 arch/x86/include/uapi/asm/swab.h:31 [inline]
BUG: KMSAN: uninit-value in __fswab64 include/uapi/linux/swab.h:68 [inline]
BUG: KMSAN: uninit-value in gf128mul_x_lle include/crypto/gf128mul.h:184 [inline]
BUG: KMSAN: uninit-value in gf128mul_init_4k_lle+0x212/0x5c0 crypto/gf128mul.c:352
CPU: 1 PID: 3568 Comm: syzkaller754152 Not tainted 4.16.0+ #82
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_swab64 arch/x86/include/uapi/asm/swab.h:31 [inline]
 __fswab64 include/uapi/linux/swab.h:68 [inline]
 gf128mul_x_lle include/crypto/gf128mul.h:184 [inline]
 gf128mul_init_4k_lle+0x212/0x5c0 crypto/gf128mul.c:352
 ghash_setkey+0x185/0x280 crypto/ghash-generic.c:45
 crypto_shash_setkey crypto/shash.c:66 [inline]
 shash_async_setkey+0x337/0x4c0 crypto/shash.c:218
 crypto_ahash_setkey+0x31a/0x470 crypto/ahash.c:201
 crypto_gcm_setkey+0xa3c/0xc10 crypto/gcm.c:146
 crypto_aead_setkey+0x373/0x4c0 crypto/aead.c:62
 aead_setkey+0xa0/0xc0 crypto/algif_aead.c:526
 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: 0033:0x43fdb9
RSP: 002b:00007ffdbc197ae8 EFLAGS: 00000217 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fdb9
RDX: 0000000000000001 RSI: 0000000000000117 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000000000010 R09: 00000000004002c8
R10: 00000000204f7000 R11: 0000000000000217 R12: 00000000004016e0
R13: 0000000000401770 R14: 0000000000000000 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
 gf128mul_init_4k_lle+0x99/0x5c0 crypto/gf128mul.c:350
 ghash_setkey+0x185/0x280 crypto/ghash-generic.c:45
 crypto_shash_setkey crypto/shash.c:66 [inline]
 shash_async_setkey+0x337/0x4c0 crypto/shash.c:218
 crypto_ahash_setkey+0x31a/0x470 crypto/ahash.c:201
 crypto_gcm_setkey+0xa3c/0xc10 crypto/gcm.c:146
 crypto_aead_setkey+0x373/0x4c0 crypto/aead.c:62
 aead_setkey+0xa0/0xc0 crypto/algif_aead.c:526
 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 include/crypto/algapi.h:210 [inline]
 crypto_ctr_crypt_inplace+0x29a/0x3a0 crypto/ctr.c:115
 crypto_ctr_crypt+0x54c/0x7d0 crypto/ctr.c:142
 skcipher_crypt_blkcipher crypto/skcipher.c:623 [inline]
 skcipher_encrypt_blkcipher+0x222/0x320 crypto/skcipher.c:632
 crypto_skcipher_encrypt include/crypto/skcipher.h:443 [inline]
 crypto_gcm_setkey+0x6a3/0xc10 crypto/gcm.c:137
 crypto_aead_setkey+0x373/0x4c0 crypto/aead.c:62
 aead_setkey+0xa0/0xc0 crypto/algif_aead.c:526
 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: ----vla@crypto_ctr_crypt_inplace
Variable was created at:
 crypto_ctr_crypt_inplace+0x19a/0x3a0 crypto/ctr.c:109
 crypto_ctr_crypt+0x54c/0x7d0 crypto/ctr.c:142
==================================================================

Crashes (113):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/04/08 09:47 https://github.com/google/kmsan.git master e2ab7e8abba4 66f22a7f .config console log report syz C ci-upstream-kmsan-gce
2018/04/21 10:08 https://github.com/google/kmsan.git master 48c6a2b0ab1b ca03d688 .config console log report ci-upstream-kmsan-gce
2018/04/21 08:35 https://github.com/google/kmsan.git master 48c6a2b0ab1b ca03d688 .config console log report ci-upstream-kmsan-gce
2018/04/20 22:21 https://github.com/google/kmsan.git master 48c6a2b0ab1b cc402841 .config console log report ci-upstream-kmsan-gce
2018/04/20 13:25 https://github.com/google/kmsan.git master 48c6a2b0ab1b cc402841 .config console log report ci-upstream-kmsan-gce
2018/04/20 06:00 https://github.com/google/kmsan.git master 48c6a2b0ab1b eae05cb0 .config console log report ci-upstream-kmsan-gce
2018/04/19 21:41 https://github.com/google/kmsan.git master 48c6a2b0ab1b 3642839c .config console log report ci-upstream-kmsan-gce
2018/04/19 20:37 https://github.com/google/kmsan.git master 48c6a2b0ab1b 3642839c .config console log report ci-upstream-kmsan-gce
2018/04/19 19:15 https://github.com/google/kmsan.git master 48c6a2b0ab1b 3642839c .config console log report ci-upstream-kmsan-gce
2018/04/19 07:27 https://github.com/google/kmsan.git master 48c6a2b0ab1b 829f0234 .config console log report ci-upstream-kmsan-gce
2018/04/19 02:48 https://github.com/google/kmsan.git master 48c6a2b0ab1b 829f0234 .config console log report ci-upstream-kmsan-gce
2018/04/18 20:57 https://github.com/google/kmsan.git master 48c6a2b0ab1b 829f0234 .config console log report ci-upstream-kmsan-gce
2018/04/18 17:29 https://github.com/google/kmsan.git master 48c6a2b0ab1b 52643b44 .config console log report ci-upstream-kmsan-gce
2018/04/18 04:46 https://github.com/google/kmsan.git master 48c6a2b0ab1b b80fd3b5 .config console log report ci-upstream-kmsan-gce
2018/04/17 19:31 https://github.com/google/kmsan.git master 48c6a2b0ab1b b80fd3b5 .config console log report ci-upstream-kmsan-gce
2018/04/17 11:14 https://github.com/google/kmsan.git master 48c6a2b0ab1b b80fd3b5 .config console log report ci-upstream-kmsan-gce
2018/04/17 09:44 https://github.com/google/kmsan.git master 48c6a2b0ab1b b80fd3b5 .config console log report ci-upstream-kmsan-gce
2018/04/17 06:45 https://github.com/google/kmsan.git master 48c6a2b0ab1b b80fd3b5 .config console log report ci-upstream-kmsan-gce
2018/04/17 05:36 https://github.com/google/kmsan.git master 48c6a2b0ab1b b80fd3b5 .config console log report ci-upstream-kmsan-gce
2018/04/17 04:12 https://github.com/google/kmsan.git master 48c6a2b0ab1b b80fd3b5 .config console log report ci-upstream-kmsan-gce
2018/04/16 23:01 https://github.com/google/kmsan.git master 48c6a2b0ab1b b80fd3b5 .config console log report ci-upstream-kmsan-gce
2018/04/16 20:32 https://github.com/google/kmsan.git master 48c6a2b0ab1b 802ac912 .config console log report ci-upstream-kmsan-gce
2018/04/16 17:52 https://github.com/google/kmsan.git master 48c6a2b0ab1b 802ac912 .config console log report ci-upstream-kmsan-gce
2018/04/16 16:48 https://github.com/google/kmsan.git master 48c6a2b0ab1b 802ac912 .config console log report ci-upstream-kmsan-gce
2018/04/16 06:06 https://github.com/google/kmsan.git master 35ff515e4bda 7a67784c .config console log report ci-upstream-kmsan-gce
2018/04/16 01:25 https://github.com/google/kmsan.git master 35ff515e4bda 7a67784c .config console log report ci-upstream-kmsan-gce
2018/04/15 20:54 https://github.com/google/kmsan.git master 35ff515e4bda 7a67784c .config console log report ci-upstream-kmsan-gce
2018/04/14 23:34 https://github.com/google/kmsan.git master 35ff515e4bda 7a67784c .config console log report ci-upstream-kmsan-gce
2018/04/14 20:31 https://github.com/google/kmsan.git master 35ff515e4bda 7a67784c .config console log report ci-upstream-kmsan-gce
2018/04/14 16:56 https://github.com/google/kmsan.git master 35ff515e4bda 7a67784c .config console log report ci-upstream-kmsan-gce
2018/04/14 13:33 https://github.com/google/kmsan.git master 35ff515e4bda 7a67784c .config console log report ci-upstream-kmsan-gce
2018/04/14 01:07 https://github.com/google/kmsan.git master 35ff515e4bda 7a67784c .config console log report ci-upstream-kmsan-gce
2018/04/13 23:22 https://github.com/google/kmsan.git master 35ff515e4bda 7a67784c .config console log report ci-upstream-kmsan-gce
2018/04/13 09:01 https://github.com/google/kmsan.git master 35ff515e4bda 0a0c5db6 .config console log report ci-upstream-kmsan-gce
2018/04/13 00:02 https://github.com/google/kmsan.git master 35ff515e4bda eb2295de .config console log report ci-upstream-kmsan-gce
2018/04/12 09:21 https://github.com/google/kmsan.git master 35ff515e4bda 9cd56d71 .config console log report ci-upstream-kmsan-gce
2018/04/12 01:39 https://github.com/google/kmsan.git master 35ff515e4bda 9cd56d71 .config console log report ci-upstream-kmsan-gce
2018/04/11 23:24 https://github.com/google/kmsan.git master 35ff515e4bda 9cd56d71 .config console log report ci-upstream-kmsan-gce
2018/04/11 16:31 https://github.com/google/kmsan.git master 35ff515e4bda 8b8de427 .config console log report ci-upstream-kmsan-gce
2018/04/10 20:15 https://github.com/google/kmsan.git master 35ff515e4bda 8b8de427 .config console log report ci-upstream-kmsan-gce
2018/04/10 14:59 https://github.com/google/kmsan.git master 35ff515e4bda 8e873e9d .config console log report ci-upstream-kmsan-gce
2018/04/10 12:49 https://github.com/google/kmsan.git master 35ff515e4bda 8e873e9d .config console log report ci-upstream-kmsan-gce
2018/04/10 08:52 https://github.com/google/kmsan.git master e2ab7e8abba4 b9f65507 .config console log report ci-upstream-kmsan-gce
2018/04/09 20:52 https://github.com/google/kmsan.git master e2ab7e8abba4 b9f65507 .config console log report ci-upstream-kmsan-gce
2018/04/06 23:06 https://github.com/google/kmsan.git master e2ab7e8abba4 d613535f .config console log report ci-upstream-kmsan-gce
* Struck through repros no longer work on HEAD.