================================================================== BUG: KCSAN: data-race in do_sendfile / ksys_write write to 0xffff888133a5a368 of 8 bytes by task 389 on cpu 0: ksys_write+0x10c/0x190 fs/read_write.c:645 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:652 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888133a5a368 of 8 bytes by task 391 on cpu 1: do_sendfile+0x2a6/0xc40 fs/read_write.c:1216 __do_sys_sendfile64 fs/read_write.c:1304 [inline] __se_sys_sendfile64 fs/read_write.c:1296 [inline] __x64_sys_sendfile64+0xb9/0x140 fs/read_write.c:1296 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x000000000000eeeb -> 0x000000000000eef2 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 391 Comm: syz-executor.2 Not tainted 5.16.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================