================================================================== BUG: KCSAN: data-race in file_write_and_wait_range / page_cache_delete read-write to 0xffff8881338f9930 of 8 bytes by task 2317 on cpu 1: page_cache_delete+0x32c/0x360 mm/filemap.c:145 __filemap_remove_folio+0x3b/0xf0 mm/filemap.c:223 __remove_mapping+0x42a/0x530 mm/vmscan.c:1307 shrink_page_list+0x1a98/0x3d40 mm/vmscan.c:1889 shrink_inactive_list+0x433/0x740 mm/vmscan.c:2360 shrink_list mm/vmscan.c:2590 [inline] shrink_lruvec+0x3b9/0x700 mm/vmscan.c:2909 shrink_node_memcgs+0x23e/0x400 mm/vmscan.c:3098 shrink_node+0x8c3/0x1110 mm/vmscan.c:3221 shrink_zones+0x2c1/0x5d0 mm/vmscan.c:3458 do_try_to_free_pages+0x165/0x720 mm/vmscan.c:3516 try_to_free_mem_cgroup_pages+0x1cd/0x420 mm/vmscan.c:3830 reclaim_high+0xcd/0x110 mm/memcontrol.c:2315 mem_cgroup_handle_over_high+0x75/0x120 mm/memcontrol.c:2499 try_charge_memcg+0x926/0x960 mm/memcontrol.c:2728 obj_cgroup_charge_pages mm/memcontrol.c:2951 [inline] __memcg_kmem_charge_page+0x2e4/0x480 mm/memcontrol.c:2977 __alloc_pages+0x1a5/0x320 mm/page_alloc.c:5425 alloc_pages+0x34d/0x450 vm_area_alloc_pages mm/vmalloc.c:2931 [inline] __vmalloc_area_node mm/vmalloc.c:2990 [inline] __vmalloc_node_range+0x740/0xec0 mm/vmalloc.c:3161 __bpf_map_area_alloc kernel/bpf/syscall.c:330 [inline] bpf_map_area_alloc+0xbc/0xd0 kernel/bpf/syscall.c:337 bloom_map_alloc+0x229/0x370 kernel/bpf/bloom_filter.c:144 find_and_alloc_map kernel/bpf/syscall.c:129 [inline] map_create+0x38a/0x6e0 kernel/bpf/syscall.c:864 __sys_bpf+0x269/0x600 kernel/bpf/syscall.c:4645 __do_sys_bpf kernel/bpf/syscall.c:4767 [inline] __se_sys_bpf kernel/bpf/syscall.c:4765 [inline] __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:4765 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff8881338f9930 of 8 bytes by task 2322 on cpu 0: mapping_needs_writeback mm/filemap.c:627 [inline] file_write_and_wait_range+0x4b/0x170 mm/filemap.c:778 ext4_sync_file+0xad/0x560 fs/ext4/fsync.c:151 vfs_fsync_range+0x107/0x120 fs/sync.c:188 generic_write_sync include/linux/fs.h:2732 [inline] ext4_buffered_write_iter+0x23f/0x280 fs/ext4/file.c:277 ext4_file_write_iter+0x211/0xdf0 do_iter_readv_writev+0x27b/0x300 do_iter_write+0x16f/0x5c0 fs/read_write.c:852 vfs_iter_write+0x4c/0x70 fs/read_write.c:893 iter_file_splice_write+0x44a/0x7c0 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] direct_splice_actor+0x80/0xa0 fs/splice.c:936 splice_direct_to_actor+0x345/0x660 fs/splice.c:891 do_splice_direct+0xfb/0x180 fs/splice.c:979 do_sendfile+0x3ad/0x900 fs/read_write.c:1246 __do_sys_sendfile64 fs/read_write.c:1311 [inline] __se_sys_sendfile64 fs/read_write.c:1297 [inline] __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1297 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000000000000d2 -> 0x00000000000000d1 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 2322 Comm: syz-executor.4 Not tainted 5.18.0-rc2-syzkaller-00351-ga2c29ccd9477-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== syz-executor.4 (2322) used greatest stack depth: 10640 bytes left