syzbot

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BUG: KCSAN: data-race in getrusage / vms_clear_ptes

write to 0xffff8881033d80f8 of 8 bytes by task 26497 on cpu 1:
 update_hiwater_rss include/linux/mm.h:2660 [inline]
 vms_clear_ptes+0x1a4/0x300 mm/vma.c:1136
 vms_complete_munmap_vmas+0x17b/0x480 mm/vma.c:1186
 do_vmi_align_munmap+0x346/0x390 mm/vma.c:1445
 do_vmi_munmap+0x1eb/0x230 mm/vma.c:1493
 __vm_munmap+0x196/0x270 mm/vma.c:2956
 __do_sys_munmap mm/mmap.c:1084 [inline]
 __se_sys_munmap mm/mmap.c:1081 [inline]
 __x64_sys_munmap+0x36/0x40 mm/mmap.c:1081
 x64_sys_call+0xe1b/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:12
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff8881033d80f8 of 8 bytes by task 26494 on cpu 0:
 get_mm_hiwater_rss include/linux/mm.h:2647 [inline]
 setmax_mm_hiwater_rss include/linux/mm.h:2677 [inline]
 getrusage+0xa17/0xb70 kernel/sys.c:1876
 io_sq_thread+0x5de/0x10e0 io_uring/sqpoll.c:310
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

value changed: 0x00000000000014e4 -> 0x00000000000016af

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 26494 Comm: iou-sqp-26493 Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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