syzbot

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BUG: KCSAN: data-race in getrusage / vms_clear_ptes

write to 0xffff88811a5ec880 of 8 bytes by task 25853 on cpu 1:
 update_hiwater_rss include/linux/mm.h:2636 [inline]
 vms_clear_ptes+0x18f/0x2d0 mm/vma.c:1222
 vms_complete_munmap_vmas+0x159/0x440 mm/vma.c:1272
 do_vmi_align_munmap+0x383/0x3d0 mm/vma.c:1531
 do_vmi_munmap+0x1db/0x220 mm/vma.c:1579
 __vm_munmap+0x1a1/0x280 mm/vma.c:3108
 __do_sys_munmap mm/mmap.c:1084 [inline]
 __se_sys_munmap mm/mmap.c:1081 [inline]
 __x64_sys_munmap+0x36/0x50 mm/mmap.c:1081
 x64_sys_call+0x9c0/0x2ff0 arch/x86/include/generated/asm/syscalls_64.h:12
 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 0xffff88811a5ec880 of 8 bytes by task 25854 on cpu 0:
 get_mm_hiwater_rss include/linux/mm.h:2623 [inline]
 setmax_mm_hiwater_rss include/linux/mm.h:2653 [inline]
 getrusage+0xa52/0xbb0 kernel/sys.c:1877
 io_sq_thread+0x5dd/0x1180 io_uring/sqpoll.c:320
 ret_from_fork+0xdd/0x150 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

value changed: 0x00000000000014ed -> 0x00000000000016f7

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 25854 Comm: iou-sqp-25853 Not tainted 6.16.0-syzkaller-01056-gae388edd4a8f #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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