================================================================== BUG: KCSAN: data-race in do_try_to_free_pages / do_try_to_free_pages write to 0xffff888136331070 of 8 bytes by task 5844 on cpu 1: snapshot_refaults mm/vmscan.c:6786 [inline] do_try_to_free_pages+0x95f/0xce0 mm/vmscan.c:6848 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:7140 try_charge_memcg+0x280/0xd20 mm/memcontrol.c:2695 obj_cgroup_charge_pages+0xab/0x130 mm/memcontrol.c:3109 __memcg_kmem_charge_page+0x1d5/0x2c0 mm/memcontrol.c:3135 __alloc_pages+0x1bb/0x340 mm/page_alloc.c:4494 alloc_pages+0x3e1/0x4e0 vm_area_alloc_pages mm/vmalloc.c:3059 [inline] __vmalloc_area_node mm/vmalloc.c:3135 [inline] __vmalloc_node_range+0x6d2/0xea0 mm/vmalloc.c:3316 kvmalloc_node+0x121/0x160 mm/util.c:629 kvmalloc include/linux/slab.h:720 [inline] xt_alloc_table_info+0x3d/0x80 net/netfilter/x_tables.c:1192 do_replace net/ipv4/netfilter/ip_tables.c:1122 [inline] do_ipt_set_ctl+0x610/0x1710 net/ipv4/netfilter/ip_tables.c:1627 nf_setsockopt+0x18d/0x1b0 net/netfilter/nf_sockopt.c:101 ip_setsockopt+0xe6/0x100 net/ipv4/ip_sockglue.c:1467 udp_setsockopt+0x95/0xa0 net/ipv4/udp.c:2778 sock_common_setsockopt+0x61/0x70 net/core/sock.c:3686 __sys_setsockopt+0x1c9/0x230 net/socket.c:2263 __do_sys_setsockopt net/socket.c:2274 [inline] __se_sys_setsockopt net/socket.c:2271 [inline] __x64_sys_setsockopt+0x66/0x80 net/socket.c:2271 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd write to 0xffff888136331070 of 8 bytes by task 5843 on cpu 0: snapshot_refaults mm/vmscan.c:6786 [inline] do_try_to_free_pages+0x95f/0xce0 mm/vmscan.c:6848 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:7140 try_charge_memcg+0x280/0xd20 mm/memcontrol.c:2695 try_charge mm/memcontrol.c:2837 [inline] charge_memcg+0x51/0x200 mm/memcontrol.c:6976 mem_cgroup_swapin_charge_folio+0xd0/0x150 mm/memcontrol.c:7032 __read_swap_cache_async+0x2fe/0x560 mm/swap_state.c:489 swap_cluster_readahead+0x2a3/0x4f0 mm/swap_state.c:653 swapin_readahead+0x8d/0x700 mm/swap_state.c:861 do_swap_page+0x4d7/0x1550 mm/memory.c:3813 handle_pte_fault mm/memory.c:4942 [inline] __handle_mm_fault mm/memory.c:5079 [inline] handle_mm_fault+0x9ec/0x2c10 mm/memory.c:5233 do_user_addr_fault arch/x86/mm/fault.c:1392 [inline] handle_page_fault arch/x86/mm/fault.c:1486 [inline] exc_page_fault+0x24d/0x650 arch/x86/mm/fault.c:1542 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 value changed: 0x00000000000016a7 -> 0x00000000000016a8 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 5843 Comm: syz-executor.5 Not tainted 6.4.0-syzkaller-12454-g1c7873e33645 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 ================================================================== syz-executor.5 invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=1000 CPU: 1 PID: 5843 Comm: syz-executor.5 Not tainted 6.4.0-syzkaller-12454-g1c7873e33645 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xda/0x130 lib/dump_stack.c:106 dump_stack+0x15/0x20 lib/dump_stack.c:113 dump_header+0x95/0x3c0 mm/oom_kill.c:460 oom_kill_process+0xe3/0x3e0 mm/oom_kill.c:1036 out_of_memory+0x9ca/0xc00 mm/oom_kill.c:1172 mem_cgroup_out_of_memory+0x139/0x190 mm/memcontrol.c:1744 mem_cgroup_oom mm/memcontrol.c:1974 [inline] try_charge_memcg+0x75c/0xd20 mm/memcontrol.c:2743 try_charge mm/memcontrol.c:2837 [inline] charge_memcg+0x51/0x200 mm/memcontrol.c:6976 mem_cgroup_swapin_charge_folio+0xd0/0x150 mm/memcontrol.c:7032 __read_swap_cache_async+0x2fe/0x560 mm/swap_state.c:489 swap_cluster_readahead+0x2a3/0x4f0 mm/swap_state.c:653 swapin_readahead+0x8d/0x700 mm/swap_state.c:861 do_swap_page+0x4d7/0x1550 mm/memory.c:3813 handle_pte_fault mm/memory.c:4942 [inline] __handle_mm_fault mm/memory.c:5079 [inline] handle_mm_fault+0x9ec/0x2c10 mm/memory.c:5233 do_user_addr_fault arch/x86/mm/fault.c:1392 [inline] handle_page_fault arch/x86/mm/fault.c:1486 [inline] exc_page_fault+0x24d/0x650 arch/x86/mm/fault.c:1542 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x7f918ff4883c Code: 76 de c9 00 e8 03 00 00 48 8d 1d 5f 47 17 00 e8 ea 4a 05 00 eb 14 0f 1f 84 00 00 00 00 00 48 81 c3 d0 00 00 00 48 39 dd 74 b9 <80> 7b 20 00 74 ee 8b 43 0c 85 c0 74 e7 48 89 df e8 ef ee ff ff eb RSP: 002b:00007ffcc5c4b590 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 00007f91900bcf80 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f91900be980 R08: 0000000000000000 R09: 00007ffcc5d1a0b0 R10: 0000000000000000 R11: 0000000000000000 R12: 00000000001833ed R13: 00007ffcc5c4b670 R14: 00007ffcc5c4b690 R15: 0000000000000032 memory: usage 307200kB, limit 307200kB, failcnt 261920 memory+swap: usage 307452kB, limit 9007199254740988kB, failcnt 0 kmem: usage 307188kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz5: cache 4096 rss 4096 shmem 0 mapped_file 0 dirty 0 writeback 4096 workingset_refault_anon 52068 workingset_refault_file 41 swap 258048 pgpgin 180067 pgpgout 180064 pgfault 206615 pgmajfault 18887 inactive_anon 0 active_anon 0 inactive_file 0 active_file 4096 unevictable 0 hierarchical_memory_limit 314572800 hierarchical_memsw_limit 9223372036854771712 total_cache 4096 total_rss 4096 total_shmem 0 total_mapped_file 0 total_dirty 0 total_writeback 0 total_workingset_refault_anon 52068 total_workingset_refault_file 41 total_swap 258048 total_pgpgin 180067 total_pgpgout 180064 total_pgfault 206613 total_pgmajfault 18887 total_inactive_anon 8192 total_active_anon 0 total_inactive_file 4096 total_active_file 0 total_unevictable 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz5,mems_allowed=0,oom_memcg=/syz5,task_memcg=/syz5,task=syz-executor.5,pid=5843,uid=0 Memory cgroup out of memory: Killed process 5843 (syz-executor.5) total-vm:46352kB, anon-rss:372kB, file-rss:8828kB, shmem-rss:0kB, UID:0 pgtables:80kB oom_score_adj:1000