===================================================== BUG: KMSAN: uninit-value in subshift lib/crypto/aes.c:149 [inline] BUG: KMSAN: uninit-value in aes_encrypt+0x12c5/0x1bc0 lib/crypto/aes.c:282 CPU: 1 PID: 12678 Comm: syz-executor.0 Not tainted 5.8.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1df/0x240 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215 subshift lib/crypto/aes.c:149 [inline] aes_encrypt+0x12c5/0x1bc0 lib/crypto/aes.c:282 aesti_encrypt+0xe8/0x130 crypto/aes_ti.c:31 cipher_crypt_one crypto/cipher.c:75 [inline] crypto_cipher_encrypt_one+0x1a9/0x380 crypto/cipher.c:82 crypto_cmac_digest_final+0x55b/0x590 crypto/cmac.c:195 crypto_shash_final+0x394/0x450 crypto/shash.c:160 shash_finup_unaligned+0x120/0x160 crypto/shash.c:168 crypto_shash_finup+0x2b4/0x6b0 crypto/shash.c:181 shash_digest_unaligned+0x22b/0x260 crypto/shash.c:189 crypto_shash_digest crypto/shash.c:205 [inline] shash_ahash_digest+0x788/0x8a0 crypto/shash.c:322 shash_async_digest+0xbb/0x110 crypto/shash.c:340 crypto_ahash_op+0x1c6/0x6c0 crypto/ahash.c:370 crypto_ahash_digest+0xdc/0x150 crypto/ahash.c:412 hash_sendpage+0x9cc/0xdf0 crypto/algif_hash.c:159 kernel_sendpage net/socket.c:3642 [inline] sock_sendpage+0x1e1/0x2c0 net/socket.c:945 pipe_to_sendpage+0x38c/0x4c0 fs/splice.c:448 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x565/0xf00 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0x1d5/0x2d0 fs/splice.c:834 do_splice_from fs/splice.c:846 [inline] direct_splice_actor+0x1fd/0x580 fs/splice.c:1016 splice_direct_to_actor+0x6b2/0xf50 fs/splice.c:971 do_splice_direct+0x342/0x580 fs/splice.c:1059 do_sendfile+0x101b/0x1d40 fs/read_write.c:1540 __do_sys_sendfile64 fs/read_write.c:1601 [inline] __se_sys_sendfile64+0x2bb/0x360 fs/read_write.c:1587 __x64_sys_sendfile64+0x56/0x70 fs/read_write.c:1587 do_syscall_64+0xb0/0x150 arch/x86/entry/common.c:386 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45c1d9 Code: Bad RIP value. RSP: 002b:00007f841ac7dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000025a00 RCX: 000000000045c1d9 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000006 RBP: 000000000078bf48 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 000000000078bf0c R13: 0000000000c9fb6f R14: 00007f841ac7e9c0 R15: 000000000078bf0c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:310 __msan_chain_origin+0x50/0x90 mm/kmsan/kmsan_instr.c:165 __crypto_xor+0x1eb/0x1470 crypto/algapi.c:1000 crypto_xor include/crypto/algapi.h:152 [inline] crypto_cmac_digest_final+0x505/0x590 crypto/cmac.c:193 crypto_shash_final+0x394/0x450 crypto/shash.c:160 shash_finup_unaligned+0x120/0x160 crypto/shash.c:168 crypto_shash_finup+0x2b4/0x6b0 crypto/shash.c:181 shash_digest_unaligned+0x22b/0x260 crypto/shash.c:189 crypto_shash_digest crypto/shash.c:205 [inline] shash_ahash_digest+0x788/0x8a0 crypto/shash.c:322 shash_async_digest+0xbb/0x110 crypto/shash.c:340 crypto_ahash_op+0x1c6/0x6c0 crypto/ahash.c:370 crypto_ahash_digest+0xdc/0x150 crypto/ahash.c:412 hash_sendpage+0x9cc/0xdf0 crypto/algif_hash.c:159 kernel_sendpage net/socket.c:3642 [inline] sock_sendpage+0x1e1/0x2c0 net/socket.c:945 pipe_to_sendpage+0x38c/0x4c0 fs/splice.c:448 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x565/0xf00 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0x1d5/0x2d0 fs/splice.c:834 do_splice_from fs/splice.c:846 [inline] direct_splice_actor+0x1fd/0x580 fs/splice.c:1016 splice_direct_to_actor+0x6b2/0xf50 fs/splice.c:971 do_splice_direct+0x342/0x580 fs/splice.c:1059 do_sendfile+0x101b/0x1d40 fs/read_write.c:1540 __do_sys_sendfile64 fs/read_write.c:1601 [inline] __se_sys_sendfile64+0x2bb/0x360 fs/read_write.c:1587 __x64_sys_sendfile64+0x56/0x70 fs/read_write.c:1587 do_syscall_64+0xb0/0x150 arch/x86/entry/common.c:386 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:310 __msan_chain_origin+0x50/0x90 mm/kmsan/kmsan_instr.c:165 __crypto_xor+0x1eb/0x1470 crypto/algapi.c:1000 crypto_xor include/crypto/algapi.h:152 [inline] crypto_cmac_digest_final+0x49f/0x590 crypto/cmac.c:192 crypto_shash_final+0x394/0x450 crypto/shash.c:160 shash_finup_unaligned+0x120/0x160 crypto/shash.c:168 crypto_shash_finup+0x2b4/0x6b0 crypto/shash.c:181 shash_digest_unaligned+0x22b/0x260 crypto/shash.c:189 crypto_shash_digest crypto/shash.c:205 [inline] shash_ahash_digest+0x788/0x8a0 crypto/shash.c:322 shash_async_digest+0xbb/0x110 crypto/shash.c:340 crypto_ahash_op+0x1c6/0x6c0 crypto/ahash.c:370 crypto_ahash_digest+0xdc/0x150 crypto/ahash.c:412 hash_sendpage+0x9cc/0xdf0 crypto/algif_hash.c:159 kernel_sendpage net/socket.c:3642 [inline] sock_sendpage+0x1e1/0x2c0 net/socket.c:945 pipe_to_sendpage+0x38c/0x4c0 fs/splice.c:448 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x565/0xf00 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0x1d5/0x2d0 fs/splice.c:834 do_splice_from fs/splice.c:846 [inline] direct_splice_actor+0x1fd/0x580 fs/splice.c:1016 splice_direct_to_actor+0x6b2/0xf50 fs/splice.c:971 do_splice_direct+0x342/0x580 fs/splice.c:1059 do_sendfile+0x101b/0x1d40 fs/read_write.c:1540 __do_sys_sendfile64 fs/read_write.c:1601 [inline] __se_sys_sendfile64+0x2bb/0x360 fs/read_write.c:1587 __x64_sys_sendfile64+0x56/0x70 fs/read_write.c:1587 do_syscall_64+0xb0/0x150 arch/x86/entry/common.c:386 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:310 kmsan_memcpy_memmove_metadata+0x272/0x2e0 mm/kmsan/kmsan.c:247 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267 __msan_memcpy+0x43/0x50 mm/kmsan/kmsan_instr.c:116 crypto_cmac_digest_update+0x597/0x7f0 crypto/cmac.c:131 crypto_shash_update+0x4e9/0x550 crypto/shash.c:106 shash_finup_unaligned+0xab/0x160 crypto/shash.c:167 crypto_shash_finup+0x2b4/0x6b0 crypto/shash.c:181 shash_digest_unaligned+0x22b/0x260 crypto/shash.c:189 crypto_shash_digest crypto/shash.c:205 [inline] shash_ahash_digest+0x788/0x8a0 crypto/shash.c:322 shash_async_digest+0xbb/0x110 crypto/shash.c:340 crypto_ahash_op+0x1c6/0x6c0 crypto/ahash.c:370 crypto_ahash_digest+0xdc/0x150 crypto/ahash.c:412 hash_sendpage+0x9cc/0xdf0 crypto/algif_hash.c:159 kernel_sendpage net/socket.c:3642 [inline] sock_sendpage+0x1e1/0x2c0 net/socket.c:945 pipe_to_sendpage+0x38c/0x4c0 fs/splice.c:448 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x565/0xf00 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0x1d5/0x2d0 fs/splice.c:834 do_splice_from fs/splice.c:846 [inline] direct_splice_actor+0x1fd/0x580 fs/splice.c:1016 splice_direct_to_actor+0x6b2/0xf50 fs/splice.c:971 do_splice_direct+0x342/0x580 fs/splice.c:1059 do_sendfile+0x101b/0x1d40 fs/read_write.c:1540 __do_sys_sendfile64 fs/read_write.c:1601 [inline] __se_sys_sendfile64+0x2bb/0x360 fs/read_write.c:1587 __x64_sys_sendfile64+0x56/0x70 fs/read_write.c:1587 do_syscall_64+0xb0/0x150 arch/x86/entry/common.c:386 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:144 kmsan_internal_alloc_meta_for_pages mm/kmsan/kmsan_shadow.c:269 [inline] kmsan_alloc_page+0xb9/0x180 mm/kmsan/kmsan_shadow.c:293 __alloc_pages_nodemask+0x56a2/0x5dc0 mm/page_alloc.c:4889 alloc_pages_current+0x672/0x990 mm/mempolicy.c:2292 alloc_pages include/linux/gfp.h:545 [inline] push_pipe+0x605/0xb70 lib/iov_iter.c:537 __pipe_get_pages lib/iov_iter.c:1278 [inline] pipe_get_pages_alloc lib/iov_iter.c:1385 [inline] iov_iter_get_pages_alloc+0x18a9/0x21c0 lib/iov_iter.c:1403 default_file_splice_read fs/splice.c:385 [inline] do_splice_to+0x4fc/0x14f0 fs/splice.c:871 splice_direct_to_actor+0x45c/0xf50 fs/splice.c:950 do_splice_direct+0x342/0x580 fs/splice.c:1059 do_sendfile+0x101b/0x1d40 fs/read_write.c:1540 __do_sys_sendfile64 fs/read_write.c:1601 [inline] __se_sys_sendfile64+0x2bb/0x360 fs/read_write.c:1587 __x64_sys_sendfile64+0x56/0x70 fs/read_write.c:1587 do_syscall_64+0xb0/0x150 arch/x86/entry/common.c:386 entry_SYSCALL_64_after_hwframe+0x44/0xa9 =====================================================