Hi,

When I test the Linux kernel (commit 38fec10eb60d687e30c8c6b5420d86e8149f7557), I encountered a kernel panic issue related to memory allocation, specifically in the alloc_pages_mpol function. The panic message indicates "System is deadlocked on memory," and the call trace points to __alloc_frozen_pages_noprof failing to allocate pages, leading to an OOM condition.

The error originates in alloc_pages_mpol, which calls policy_nodemask to determine the nodemask and nid for memory allocation. The subsequent call to __alloc_frozen_pages_noprof fails when the system runs out of memory, with no swap available and no killable processes. 

This crash can be triggered by executing the provided C reproducer multiple times. The reproducer performs a series of system calls (e.g., file creation, perf_event_open, io_submit, and filesystem mounts), which likely stress the memory management system and expose the bug.

This can be reproduced on:

HEAD commit:

38fec10eb60d687e30c8c6b5420d86e8149f7557

console output: https://pastebin.com/raw/T4dfWHSf

kernel config : https://pastebin.com/raw/u0Efyj5P

C reproducer : https://pastebin.com/raw/3hPqjF6M