loop2: detected capacity change from 0 to 1024 EXT4-fs: Ignoring removed nomblk_io_submit option EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ================================================================== BUG: KCSAN: data-race in delete_from_page_cache_batch / folio_mapping write to 0xffffea00049ed5d8 of 8 bytes by task 26183 on cpu 0: page_cache_delete_batch mm/filemap.c:310 [inline] delete_from_page_cache_batch+0x2f6/0x6f0 mm/filemap.c:336 truncate_inode_pages_range+0x1ba/0x780 mm/truncate.c:405 truncate_inode_pages+0x24/0x30 mm/truncate.c:485 ext4_truncate_failed_write fs/ext4/truncate.h:21 [inline] ext4_write_end+0x541/0x730 fs/ext4/inode.c:1491 generic_perform_write+0x312/0x490 mm/filemap.c:4335 ext4_buffered_write_iter+0x1ee/0x3c0 fs/ext4/file.c:299 ext4_file_write_iter+0x387/0xf60 fs/ext4/file.c:-1 do_iter_readv_writev+0x4a1/0x540 fs/read_write.c:-1 vfs_writev+0x2df/0x8b0 fs/read_write.c:1057 do_pwritev fs/read_write.c:1153 [inline] __do_sys_pwritev2 fs/read_write.c:1211 [inline] __se_sys_pwritev2+0xfc/0x1c0 fs/read_write.c:1202 __x64_sys_pwritev2+0x67/0x80 fs/read_write.c:1202 x64_sys_call+0x2c9e/0x3000 arch/x86/include/generated/asm/syscalls_64.h:329 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xca/0x2b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffffea00049ed5d8 of 8 bytes by task 26179 on cpu 1: folio_mapping+0xa1/0xe0 mm/util.c:703 folio_evictable mm/internal.h:499 [inline] evict_folios+0x2b54/0x35a0 mm/vmscan.c:4721 try_to_shrink_lruvec+0x5b5/0x950 mm/vmscan.c:4874 lru_gen_shrink_lruvec mm/vmscan.c:5023 [inline] shrink_lruvec+0x22e/0x1b50 mm/vmscan.c:5784 shrink_node_memcgs mm/vmscan.c:6020 [inline] shrink_node+0x66c/0x2010 mm/vmscan.c:6061 shrink_zones mm/vmscan.c:6300 [inline] do_try_to_free_pages+0x3f6/0xcd0 mm/vmscan.c:6362 try_to_free_mem_cgroup_pages+0x1ab/0x410 mm/vmscan.c:6690 try_charge_memcg+0x383/0xa10 mm/memcontrol.c:2388 obj_cgroup_charge_pages+0xa6/0x150 mm/memcontrol.c:2823 __memcg_kmem_charge_page+0x9f/0x170 mm/memcontrol.c:2867 __alloc_frozen_pages_noprof+0x18f/0x360 mm/page_alloc.c:5227 alloc_pages_mpol+0xb3/0x260 mm/mempolicy.c:2486 alloc_frozen_pages_noprof mm/mempolicy.c:2557 [inline] alloc_pages_noprof+0x90/0x130 mm/mempolicy.c:2577 vm_area_alloc_pages mm/vmalloc.c:3718 [inline] __vmalloc_area_node mm/vmalloc.c:3863 [inline] __vmalloc_node_range_noprof+0xa7b/0x1310 mm/vmalloc.c:4051 __kvmalloc_node_noprof+0x492/0x6b0 mm/slub.c:7164 ip_set_alloc+0x24/0x30 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/0x970 net/netfilter/ipset/ip_set_core.c:1109 nfnetlink_rcv_msg+0x4c6/0x590 net/netfilter/nfnetlink.c:302 netlink_rcv_skb+0x123/0x220 net/netlink/af_netlink.c:2550 nfnetlink_rcv+0x167/0x16c0 net/netfilter/nfnetlink.c:669 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x5c0/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x58b/0x6b0 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x145/0x180 net/socket.c:742 ____sys_sendmsg+0x31e/0x4a0 net/socket.c:2592 ___sys_sendmsg+0x17b/0x1d0 net/socket.c:2646 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2683 [inline] __se_sys_sendmsg net/socket.c:2681 [inline] __x64_sys_sendmsg+0xd4/0x160 net/socket.c:2681 x64_sys_call+0x17ba/0x3000 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xca/0x2b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0xffff88811a9c5420 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 26179 Comm: syz.2.7609 Tainted: G W syzkaller #0 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ==================================================================