================================================================== BUG: KCSAN: data-race in copy_process / show_stat write to 0xffffffff894ca408 of 8 bytes by task 8714 on cpu 0: copy_process+0x295e/0x2dc0 kernel/fork.c:2270 _do_fork+0x14a/0x6c0 kernel/fork.c:2428 __do_sys_clone kernel/fork.c:2545 [inline] __se_sys_clone kernel/fork.c:2529 [inline] __x64_sys_clone+0xc8/0xf0 kernel/fork.c:2529 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffffffff894ca408 of 8 bytes by task 13930 on cpu 1: show_stat+0xba5/0xd10 fs/proc/stat.c:204 seq_read+0x2ee/0x900 fs/seq_file.c:208 pde_read fs/proc/inode.c:306 [inline] proc_reg_read+0xde/0x1a0 fs/proc/inode.c:316 do_loop_readv_writev fs/read_write.c:734 [inline] do_iter_read+0x3d2/0x4b0 fs/read_write.c:955 vfs_readv fs/read_write.c:1073 [inline] do_preadv+0x13b/0x230 fs/read_write.c:1165 __do_sys_preadv fs/read_write.c:1215 [inline] __se_sys_preadv fs/read_write.c:1210 [inline] __x64_sys_preadv+0x54/0x60 fs/read_write.c:1210 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 13930 Comm: syz-executor.1 Not tainted 5.9.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================