netlink: 'syz.2.1455': attribute type 13 has an invalid length.
==================================================================
BUG: KCSAN: data-race in __filemap_remove_folio / folio_mapping

write to 0xffffea0004314a98 of 8 bytes by task 3316 on cpu 1:
 page_cache_delete mm/filemap.c:144 [inline]
 __filemap_remove_folio+0x1a5/0x2a0 mm/filemap.c:227
 filemap_remove_folio+0x6d/0x1d0 mm/filemap.c:256
 truncate_inode_folio+0x42/0x50 mm/truncate.c:176
 shmem_undo_range+0x244/0xa80 mm/shmem.c:1116
 shmem_truncate_range mm/shmem.c:1232 [inline]
 shmem_evict_inode+0x134/0x520 mm/shmem.c:1360
 evict+0x2e3/0x550 fs/inode.c:810
 iput_final fs/inode.c:1914 [inline]
 iput+0x4ed/0x650 fs/inode.c:1966
 do_unlinkat+0x284/0x480 fs/namei.c:4744
 __do_sys_unlink fs/namei.c:4783 [inline]
 __se_sys_unlink fs/namei.c:4781 [inline]
 __x64_sys_unlink+0x2e/0x40 fs/namei.c:4781
 x64_sys_call+0x2dcf/0x3000 arch/x86/include/generated/asm/syscalls_64.h:88
 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 0xffffea0004314a98 of 8 bytes by task 7811 on cpu 0:
 folio_mapping+0xa1/0xe0 mm/util.c:703
 folio_evictable mm/internal.h:499 [inline]
 sort_folio mm/vmscan.c:4480 [inline]
 scan_folios mm/vmscan.c:4607 [inline]
 isolate_folios mm/vmscan.c:4703 [inline]
 evict_folios+0xe05/0x3590 mm/vmscan.c:4733
 try_to_shrink_lruvec+0x5b5/0x950 mm/vmscan.c:4908
 shrink_one+0x15f/0x4c0 mm/vmscan.c:4953
 shrink_many mm/vmscan.c:5016 [inline]
 lru_gen_shrink_node mm/vmscan.c:5094 [inline]
 shrink_node+0x19c2/0x2120 mm/vmscan.c:6081
 shrink_zones mm/vmscan.c:6339 [inline]
 do_try_to_free_pages+0x3f6/0xcd0 mm/vmscan.c:6401
 try_to_free_pages+0x32f/0x840 mm/vmscan.c:6647
 __perform_reclaim mm/page_alloc.c:4345 [inline]
 __alloc_pages_direct_reclaim+0x4f/0xe0 mm/page_alloc.c:4367
 __alloc_pages_slowpath+0x328/0x5d0 mm/page_alloc.c:4816
 __alloc_frozen_pages_noprof+0x270/0x360 mm/page_alloc.c:5196
 alloc_pages_mpol+0xb3/0x260 mm/mempolicy.c:2416
 alloc_frozen_pages_noprof mm/mempolicy.c:2487 [inline]
 alloc_pages_noprof+0x90/0x130 mm/mempolicy.c:2507
 vm_area_alloc_pages mm/vmalloc.c:3647 [inline]
 __vmalloc_area_node mm/vmalloc.c:3724 [inline]
 __vmalloc_node_range_noprof+0x7a5/0xed0 mm/vmalloc.c:3897
 __kvmalloc_node_noprof+0x483/0x670 mm/slub.c:7130
 kvmalloc_array_node_noprof include/linux/slab.h:1122 [inline]
 __ptr_ring_init_queue_alloc_noprof include/linux/ptr_ring.h:481 [inline]
 ptr_ring_resize_multiple_bh_noprof include/linux/ptr_ring.h:640 [inline]
 skb_array_resize_multiple_bh_noprof include/linux/skb_array.h:208 [inline]
 pfifo_fast_change_tx_queue_len+0x119/0x5e0 net/sched/sch_generic.c:912
 qdisc_change_tx_queue_len net/sched/sch_generic.c:1413 [inline]
 dev_qdisc_change_tx_queue_len+0x1c8/0x280 net/sched/sch_generic.c:1460
 netif_change_tx_queue_len+0xf9/0x170 net/core/dev.c:9816
 do_setlink+0xb01/0x2810 net/core/rtnetlink.c:3174
 rtnl_group_changelink net/core/rtnetlink.c:3783 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3937 [inline]
 rtnl_newlink+0xd8b/0x12d0 net/core/rtnetlink.c:4065
 rtnetlink_rcv_msg+0x5fe/0x6d0 net/core/rtnetlink.c:6951
 netlink_rcv_skb+0x123/0x220 net/netlink/af_netlink.c:2552
 rtnetlink_rcv+0x1c/0x30 net/core/rtnetlink.c:6978
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x5c0/0x690 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x58b/0x6b0 net/netlink/af_netlink.c:1896
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg+0x145/0x180 net/socket.c:742
 ____sys_sendmsg+0x31e/0x4e0 net/socket.c:2630
 ___sys_sendmsg+0x17b/0x1d0 net/socket.c:2684
 __sys_sendmsg net/socket.c:2716 [inline]
 __do_sys_sendmsg net/socket.c:2721 [inline]
 __se_sys_sendmsg net/socket.c:2719 [inline]
 __x64_sys_sendmsg+0xd4/0x160 net/socket.c:2719
 x64_sys_call+0x191e/0x3000 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: 0xffff88811cb4f070 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 7811 Comm: syz.2.1455 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
==================================================================
syzkaller0: refused to change device tx_queue_len
A link change request failed with some changes committed already. Interface syzkaller0 may have been left with an inconsistent configuration, please check.
syz.2.1455 (7811) used greatest stack depth: 7000 bytes left