================================================================== BUG: KCSAN: data-race in vm_area_dup / vma_interval_tree_insert write to 0xffff88807a7bada8 of 8 bytes by task 17862 on cpu 0: 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 ksys_mmap_pgoff+0x2db/0x420 mm/mmap.c:1595 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88807a7bad48 of 200 bytes by task 17863 on cpu 1: vm_area_dup+0x71/0x110 kernel/fork.c:362 __split_vma+0x83/0x340 mm/mmap.c:2666 split_vma+0x69/0x90 mm/mmap.c:2724 mprotect_fixup+0x45d/0x530 mm/mprotect.c:473 do_mprotect_pkey+0x3da/0x640 mm/mprotect.c:613 __do_sys_mprotect mm/mprotect.c:638 [inline] __se_sys_mprotect mm/mprotect.c:635 [inline] __x64_sys_mprotect+0x4d/0x60 mm/mprotect.c:635 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 17863 Comm: modprobe Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================