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BUG: KCSAN: data-race in __filemap_remove_folio / folio_mapping

write to 0xffffea000419fd58 of 8 bytes by task 30483 on cpu 0:
 page_cache_delete mm/filemap.c:144 [inline]
 __filemap_remove_folio+0x1a5/0x2a0 mm/filemap.c:224
 filemap_remove_folio+0x6d/0x1d0 mm/filemap.c:253
 truncate_inode_folio+0x42/0x50 mm/truncate.c:176
 shmem_undo_range+0x244/0xa80 mm/shmem.c:1121
 shmem_truncate_range+0x27/0x70 mm/shmem.c:1237
 shmem_setattr+0x7eb/0x840 mm/shmem.c:1320
 notify_change+0x806/0x890 fs/attr.c:552
 do_truncate+0x13b/0x180 fs/open.c:68
 vfs_truncate+0x1e8/0x220 fs/open.c:118
 do_sys_truncate+0x91/0x130 fs/open.c:141
 __do_sys_truncate fs/open.c:153 [inline]
 __se_sys_truncate fs/open.c:151 [inline]
 __x64_sys_truncate+0x31/0x40 fs/open.c:151
 x64_sys_call+0x2920/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:77
 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 0xffffea000419fd58 of 8 bytes by task 30465 on cpu 1:
 folio_mapping+0xa1/0x120 mm/util.c:701
 folio_evictable mm/internal.h:478 [inline]
 sort_folio mm/vmscan.c:4469 [inline]
 scan_folios mm/vmscan.c:4595 [inline]
 isolate_folios mm/vmscan.c:4690 [inline]
 evict_folios+0xdb9/0x33d0 mm/vmscan.c:4719
 try_to_shrink_lruvec+0x45a/0x7e0 mm/vmscan.c:4892
 lru_gen_shrink_lruvec mm/vmscan.c:5041 [inline]
 shrink_lruvec+0x22e/0x1b40 mm/vmscan.c:5797
 shrink_node_memcgs mm/vmscan.c:6033 [inline]
 shrink_node+0x686/0x2120 mm/vmscan.c:6074
 shrink_zones mm/vmscan.c:6318 [inline]
 do_try_to_free_pages+0x3f6/0xcd0 mm/vmscan.c:6380
 try_to_free_mem_cgroup_pages+0x1ab/0x410 mm/vmscan.c:6708
 try_charge_memcg+0x358/0x9e0 mm/memcontrol.c:2362
 obj_cgroup_charge_pages+0xa6/0x150 mm/memcontrol.c:2803
 __memcg_kmem_charge_page+0x9f/0x170 mm/memcontrol.c:2847
 __alloc_frozen_pages_noprof+0x188/0x360 mm/page_alloc.c:4976
 alloc_pages_mpol+0xb3/0x250 mm/mempolicy.c:2419
 alloc_frozen_pages_noprof mm/mempolicy.c:2490 [inline]
 alloc_pages_noprof+0x90/0x130 mm/mempolicy.c:2510
 vm_area_alloc_pages mm/vmalloc.c:3634 [inline]
 __vmalloc_area_node mm/vmalloc.c:3712 [inline]
 __vmalloc_node_range_noprof+0x6f2/0xe00 mm/vmalloc.c:3885
 __kvmalloc_node_noprof+0x30f/0x4e0 mm/slub.c:5037
 ip_set_alloc+0x1f/0x30 net/netfilter/ipset/ip_set_core.c:261
 hash_netiface_create+0x282/0x740 net/netfilter/ipset/ip_set_hash_gen.h:1568
 ip_set_create+0x3cc/0x960 net/netfilter/ipset/ip_set_core.c:1109
 nfnetlink_rcv_msg+0x4c3/0x590 net/netfilter/nfnetlink.c:303
 netlink_rcv_skb+0x123/0x220 net/netlink/af_netlink.c:2534
 nfnetlink_rcv+0x16b/0x1690 net/netfilter/nfnetlink.c:668
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0x59e/0x670 net/netlink/af_netlink.c:1339
 netlink_sendmsg+0x58b/0x6b0 net/netlink/af_netlink.c:1883
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x142/0x180 net/socket.c:727
 ____sys_sendmsg+0x31e/0x4e0 net/socket.c:2566
 ___sys_sendmsg+0x17b/0x1d0 net/socket.c:2620
 __sys_sendmsg net/socket.c:2652 [inline]
 __do_sys_sendmsg net/socket.c:2657 [inline]
 __se_sys_sendmsg net/socket.c:2655 [inline]
 __x64_sys_sendmsg+0xd4/0x160 net/socket.c:2655
 x64_sys_call+0x2999/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:47
 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

value changed: 0xffff888117253928 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 30465 Comm: syz.1.8725 Not tainted 6.16.0-rc2-syzkaller-00047-g52da431bf03b #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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