syzbot

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BUG: KCSAN: data-race in getrusage / vms_clear_ptes

write to 0xffff88810bb5e8b0 of 8 bytes by task 8124 on cpu 1:
 update_hiwater_rss include/linux/mm.h:2631 [inline]
 vms_clear_ptes+0x18f/0x2d0 mm/vma.c:1222
 vms_clean_up_area mm/vma.c:1242 [inline]
 __mmap_prepare mm/vma.c:2388 [inline]
 __mmap_region mm/vma.c:2607 [inline]
 mmap_region+0x6e8/0x1580 mm/vma.c:2692
 do_mmap+0x9b3/0xbe0 mm/mmap.c:561
 vm_mmap_pgoff+0x17a/0x2e0 mm/util.c:579
 ksys_mmap_pgoff+0x2d0/0x310 mm/mmap.c:607
 x64_sys_call+0x1602/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:10
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff88810bb5e8b0 of 8 bytes by task 8125 on cpu 0:
 get_mm_hiwater_rss include/linux/mm.h:2618 [inline]
 setmax_mm_hiwater_rss include/linux/mm.h:2648 [inline]
 getrusage+0xa52/0xbb0 kernel/sys.c:1877
 io_sq_thread+0x5dd/0x1180 io_uring/sqpoll.c:320
 ret_from_fork+0xda/0x150 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

value changed: 0x00000000000014ea -> 0x00000000000016b4

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 8125 Comm: iou-sqp-8124 Not tainted 6.16.0-rc4-syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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