================================================================== BUG: KCSAN: data-race in drain_all_stock / try_charge_memcg write to 0xffff888237c2a690 of 4 bytes by task 9874 on cpu 0: consume_stock mm/memcontrol.c:2322 [inline] try_charge_memcg+0xb46/0xd20 mm/memcontrol.c:2743 obj_cgroup_charge_pages+0xbd/0x1c0 mm/memcontrol.c:3301 __memcg_kmem_charge_page+0x9c/0x170 mm/memcontrol.c:3327 __alloc_pages+0x1bb/0x340 mm/page_alloc.c:4584 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] bpf_ringbuf_area_alloc kernel/bpf/ringbuf.c:122 [inline] bpf_ringbuf_alloc+0xba/0x2f0 kernel/bpf/ringbuf.c:170 ringbuf_map_alloc+0x167/0x1d0 kernel/bpf/ringbuf.c:204 map_create+0x713/0xa40 kernel/bpf/syscall.c:1237 __sys_bpf+0x62a/0x780 kernel/bpf/syscall.c:5439 __do_sys_bpf kernel/bpf/syscall.c:5561 [inline] __se_sys_bpf kernel/bpf/syscall.c:5559 [inline] __x64_sys_bpf+0x43/0x50 kernel/bpf/syscall.c:5559 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff888237c2a690 of 4 bytes by task 9858 on cpu 1: drain_all_stock+0xd3/0x2e0 mm/memcontrol.c:2430 try_charge_memcg+0x6c2/0xd20 mm/memcontrol.c:2790 try_charge mm/memcontrol.c:2930 [inline] charge_memcg mm/memcontrol.c:7276 [inline] mem_cgroup_swapin_charge_folio+0x107/0x190 mm/memcontrol.c:7361 __read_swap_cache_async+0x2b9/0x510 mm/swap_state.c:498 swap_cluster_readahead+0x276/0x3f0 mm/swap_state.c:662 swapin_readahead+0xe2/0x7a0 mm/swap_state.c:888 do_swap_page+0x3bb/0x15e0 mm/memory.c:3913 handle_pte_fault mm/memory.c:5167 [inline] __handle_mm_fault mm/memory.c:5305 [inline] handle_mm_fault+0x7f6/0x27c0 mm/memory.c:5470 do_user_addr_fault arch/x86/mm/fault.c:1355 [inline] handle_page_fault arch/x86/mm/fault.c:1498 [inline] exc_page_fault+0x401/0x6d0 arch/x86/mm/fault.c:1554 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 value changed: 0x0000003e -> 0x0000002b Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 9858 Comm: syz-executor.4 Not tainted 6.8.0-rc6-syzkaller-00238-g5ad3cb0ed525 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 ==================================================================