================================================================== BUG: KCSAN: data-race in fcrypt_decrypt / fcrypt_decrypt write to 0xffff88802ae55f9b of 8 bytes by task 12445 on cpu 1: fcrypt_decrypt+0x446/0x460 crypto/fcrypt.c:294 cipher_crypt_one crypto/cipher.c:76 [inline] crypto_cipher_decrypt_one+0x9e/0x120 crypto/cipher.c:90 crypto_pcbc_decrypt_segment crypto/pcbc.c:98 [inline] crypto_pcbc_decrypt+0xd1/0x1e0 crypto/pcbc.c:146 crypto_skcipher_decrypt+0x59/0x70 crypto/skcipher.c:647 _skcipher_recvmsg crypto/algif_skcipher.c:138 [inline] skcipher_recvmsg+0x61f/0x7f0 crypto/algif_skcipher.c:157 ____sys_recvmsg+0x15d/0x310 include/linux/uio.h:234 ___sys_recvmsg net/socket.c:2611 [inline] __sys_recvmsg+0x1d2/0x3a0 net/socket.c:2641 __do_sys_recvmsg net/socket.c:2651 [inline] __se_sys_recvmsg net/socket.c:2648 [inline] __x64_sys_recvmsg+0x42/0x50 net/socket.c:2648 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae write to 0xffff88802ae55f9b of 8 bytes by task 12450 on cpu 0: fcrypt_decrypt+0x446/0x460 crypto/fcrypt.c:294 cipher_crypt_one crypto/cipher.c:76 [inline] crypto_cipher_decrypt_one+0x9e/0x120 crypto/cipher.c:90 crypto_pcbc_decrypt_segment crypto/pcbc.c:98 [inline] crypto_pcbc_decrypt+0xd1/0x1e0 crypto/pcbc.c:146 crypto_skcipher_decrypt+0x59/0x70 crypto/skcipher.c:647 _skcipher_recvmsg crypto/algif_skcipher.c:138 [inline] skcipher_recvmsg+0x61f/0x7f0 crypto/algif_skcipher.c:157 ____sys_recvmsg+0x15d/0x310 include/linux/uio.h:234 ___sys_recvmsg net/socket.c:2611 [inline] __sys_recvmsg+0x1d2/0x3a0 net/socket.c:2641 __do_sys_recvmsg net/socket.c:2651 [inline] __se_sys_recvmsg net/socket.c:2648 [inline] __x64_sys_recvmsg+0x42/0x50 net/socket.c:2648 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 12450 Comm: syz-executor.0 Tainted: G W 5.12.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================