================================================================== BUG: KCSAN: data-race in vm_area_dup / vma_interval_tree_insert write to 0xffff888061050128 of 8 bytes by task 11854 on cpu 1: rb_link_node include/linux/rbtree.h:75 [inline] vma_interval_tree_insert+0x15d/0x220 mm/interval_tree.c:23 __vma_link_file+0xca/0xf0 mm/mmap.c:629 vma_link+0x97/0x110 mm/mmap.c:655 mmap_region+0x8ba/0xdd0 mm/mmap.c:1795 do_mmap+0x717/0xc20 mm/mmap.c:1545 do_mmap_pgoff include/linux/mm.h:2553 [inline] vm_mmap_pgoff+0x12f/0x190 mm/util.c:506 vm_mmap+0x9a/0xd0 mm/util.c:525 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:111 [inline] test_ti_thread_flag include/linux/thread_info.h:84 [inline] elf_map+0x164/0x200 fs/binfmt_elf.c:378 load_elf_interp fs/binfmt_elf.c:604 [inline] load_elf_binary+0x14bc/0x2b10 fs/binfmt_elf.c:1057 search_binary_handler fs/exec.c:1718 [inline] search_binary_handler+0x11c/0x3f0 fs/exec.c:1695 exec_binprm fs/exec.c:1761 [inline] __do_execve_file.isra.0+0xb53/0x1120 fs/exec.c:1881 do_execveat_common fs/exec.c:1927 [inline] do_execve+0x39/0x50 fs/exec.c:1944 call_usermodehelper_exec_async+0x394/0x3e0 kernel/umh.c:112 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 read to 0xffff8880610500c8 of 200 bytes by task 11855 on cpu 0: vm_area_dup+0x71/0x110 kernel/fork.c:362 __split_vma+0x83/0x340 mm/mmap.c:2666 __do_munmap+0x20d/0xb20 mm/mmap.c:2782 __vm_munmap+0xa9/0x130 mm/mmap.c:2856 vm_munmap+0x25/0x40 mm/mmap.c:2874 elf_map+0x1b9/0x200 fs/binfmt_elf.c:379 load_elf_interp fs/binfmt_elf.c:604 [inline] load_elf_binary+0x14bc/0x2b10 fs/binfmt_elf.c:1057 search_binary_handler fs/exec.c:1718 [inline] search_binary_handler+0x11c/0x3f0 fs/exec.c:1695 exec_binprm fs/exec.c:1761 [inline] __do_execve_file.isra.0+0xb53/0x1120 fs/exec.c:1881 do_execveat_common fs/exec.c:1927 [inline] do_execve+0x39/0x50 fs/exec.c:1944 call_usermodehelper_exec_async+0x394/0x3e0 kernel/umh.c:112 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 11855 Comm: modprobe Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================