================================================================== BUG: KCSAN: data-race in exec_mmap / unmap_region write to 0xffff888103dc70b0 of 8 bytes by task 1475 on cpu 1: update_hiwater_rss include/linux/mm.h:2070 [inline] unmap_region+0x12b/0x1e0 mm/mmap.c:2653 __do_munmap+0xdda/0x1220 mm/mmap.c:2868 __vm_munmap mm/mmap.c:2891 [inline] __do_sys_munmap+0x97/0x150 mm/mmap.c:2916 __se_sys_munmap mm/mmap.c:2913 [inline] __x64_sys_munmap+0x2d/0x40 mm/mmap.c:2913 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888103dc70b0 of 8 bytes by task 2574 on cpu 0: get_mm_hiwater_rss include/linux/mm.h:2057 [inline] setmax_mm_hiwater_rss include/linux/mm.h:2087 [inline] exec_mmap+0x1e3/0x360 fs/exec.c:1032 begin_new_exec+0x863/0x1430 fs/exec.c:1293 load_elf_binary+0x556/0x2560 fs/binfmt_elf.c:1002 search_binary_handler fs/exec.c:1726 [inline] exec_binprm+0x1d9/0x710 fs/exec.c:1767 bprm_execve+0x3b5/0x520 fs/exec.c:1836 do_execveat_common+0x77d/0x800 fs/exec.c:1941 do_execve fs/exec.c:2011 [inline] __do_sys_execve fs/exec.c:2087 [inline] __se_sys_execve fs/exec.c:2082 [inline] __x64_sys_execve+0x56/0x70 fs/exec.c:2082 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000000000002a9 -> 0x00000000000002aa Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 2574 Comm: dhcpcd Not tainted 5.17.0-syzkaller-13410-g74164d284b29-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================