================================================================== BUG: KCSAN: data-race in delete_from_page_cache_batch / folio_mapping write to 0xffffea0004e21a58 of 8 bytes by task 7531 on cpu 0: page_cache_delete_batch mm/filemap.c:317 [inline] delete_from_page_cache_batch+0x309/0x710 mm/filemap.c:343 truncate_inode_pages_range+0x1c5/0x6b0 mm/truncate.c:359 truncate_inode_pages mm/truncate.c:439 [inline] truncate_inode_pages_final+0x55/0x60 mm/truncate.c:474 ext4_evict_inode+0x174/0xdd0 fs/ext4/inode.c:193 evict+0x1ae/0x420 fs/inode.c:667 iput_final fs/inode.c:1741 [inline] iput+0x432/0x5c0 fs/inode.c:1767 dentry_unlink_inode+0x230/0x240 fs/dcache.c:400 __dentry_kill+0x188/0x4b0 fs/dcache.c:603 dput+0x5c/0xd0 fs/dcache.c:845 __fput+0x44c/0x660 fs/file_table.c:430 ____fput+0x15/0x20 fs/file_table.c:450 task_work_run+0x13a/0x1a0 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x5fd/0x1740 kernel/exit.c:878 do_group_exit+0x102/0x150 kernel/exit.c:1027 get_signal+0xf2f/0x1080 kernel/signal.c:2911 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x59/0x130 kernel/entry/common.c:218 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read to 0xffffea0004e21a58 of 8 bytes by task 7564 on cpu 1: folio_mapping+0x96/0x110 mm/util.c:799 folio_evictable mm/internal.h:256 [inline] move_folios_to_lru+0x137/0x690 mm/vmscan.c:1808 shrink_inactive_list mm/vmscan.c:1929 [inline] shrink_list mm/vmscan.c:2163 [inline] shrink_lruvec+0xbd8/0x1640 mm/vmscan.c:5687 shrink_node_memcgs mm/vmscan.c:5873 [inline] shrink_node+0xa78/0x15a0 mm/vmscan.c:5908 shrink_zones mm/vmscan.c:6152 [inline] do_try_to_free_pages+0x3cc/0xca0 mm/vmscan.c:6214 try_to_free_mem_cgroup_pages+0x1eb/0x4e0 mm/vmscan.c:6529 try_charge_memcg+0x279/0xd10 mm/memcontrol.c:2783 obj_cgroup_charge_pages+0xbd/0x1d0 mm/memcontrol.c:3302 __memcg_kmem_charge_page+0x9d/0x170 mm/memcontrol.c:3328 __alloc_pages+0x1bc/0x360 mm/page_alloc.c:4592 alloc_pages_mpol+0xb1/0x1e0 mm/mempolicy.c:2264 alloc_pages+0xe1/0x100 mm/mempolicy.c:2335 vm_area_alloc_pages mm/vmalloc.c:3561 [inline] __vmalloc_area_node mm/vmalloc.c:3637 [inline] __vmalloc_node_range+0x6f2/0xee0 mm/vmalloc.c:3818 kvmalloc_node+0x121/0x170 mm/util.c:659 kvmalloc include/linux/slab.h:766 [inline] kvzalloc include/linux/slab.h:774 [inline] ip_set_alloc+0x1f/0x30 net/netfilter/ipset/ip_set_core.c:255 hash_netiface_create+0x277/0x740 net/netfilter/ipset/ip_set_hash_gen.h:1568 ip_set_create+0x359/0x8a0 net/netfilter/ipset/ip_set_core.c:1103 nfnetlink_rcv_msg+0x4a9/0x570 net/netfilter/nfnetlink.c:302 netlink_rcv_skb+0x12c/0x230 net/netlink/af_netlink.c:2559 nfnetlink_rcv+0x170/0x13e0 net/netfilter/nfnetlink.c:659 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] netlink_unicast+0x58d/0x660 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x5d3/0x6e0 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:745 ____sys_sendmsg+0x312/0x410 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x1e9/0x280 net/socket.c:2667 __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2674 x64_sys_call+0xae9/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:47 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+0x77/0x7f value changed: 0xffff888106a694e0 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7564 Comm: syz-executor.2 Not tainted 6.9.0-rc4-syzkaller-00034-g4b6b51322118 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ================================================================== syz-executor.2 (7564) used greatest stack depth: 7072 bytes left