EXT4-fs error (device loop2): ext4_mb_mark_diskspace_used:4085: comm syz-executor.2: Allocating blocks 50-51 which overlap fs metadata
EXT4-fs error (device loop2): ext4_mb_mark_diskspace_used:4085: comm syz-executor.2: Allocating blocks 50-51 which overlap fs metadata
==================================================================
BUG: KCSAN: data-race in __anon_vma_prepare / lock_vma_under_rcu

read to 0xffff888152cad1c0 of 8 bytes by task 1458 on cpu 1:
 lock_vma_under_rcu+0x16a/0x2a0 mm/memory.c:5510
 do_user_addr_fault arch/x86/mm/fault.c:1356 [inline]
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x164/0x6c0 arch/x86/mm/fault.c:1561
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570

write to 0xffff888152cad1c0 of 8 bytes by task 1420 on cpu 0:
 __anon_vma_prepare+0x147/0x2b0 mm/rmap.c:214
 anon_vma_prepare include/linux/rmap.h:159 [inline]
 do_anonymous_page mm/memory.c:4170 [inline]
 do_pte_missing mm/memory.c:3729 [inline]
 handle_pte_fault mm/memory.c:5039 [inline]
 __handle_mm_fault mm/memory.c:5180 [inline]
 handle_mm_fault+0x224c/0x2dd0 mm/memory.c:5345
 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline]
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x2f7/0x6c0 arch/x86/mm/fault.c:1561
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 1420 Comm: syz-executor.2 Not tainted 6.7.0-rc6-syzkaller-00248-g5254c0cbc92d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
==================================================================
EXT4-fs (loop2): pa ffff8881083db540: logic 20, phys. 51, len 13