================================================================== BUG: KCSAN: data-race in file_write_and_wait_range / page_cache_delete read-write to 0xffff888138da1d80 of 8 bytes by task 13517 on cpu 0: page_cache_delete+0x35d/0x390 mm/filemap.c:145 __filemap_remove_folio+0x3b/0xf0 mm/filemap.c:223 __remove_mapping+0x42a/0x530 mm/vmscan.c:1366 shrink_page_list+0x121b/0x1f10 mm/vmscan.c:1973 shrink_inactive_list+0x433/0x740 mm/vmscan.c:2447 shrink_list mm/vmscan.c:2674 [inline] shrink_lruvec+0x3aa/0x700 mm/vmscan.c:2991 shrink_node_memcgs+0x253/0x470 mm/vmscan.c:3180 shrink_node+0x955/0x1200 mm/vmscan.c:3304 shrink_zones+0x2c1/0x5d0 mm/vmscan.c:3542 do_try_to_free_pages+0x195/0x760 mm/vmscan.c:3601 try_to_free_mem_cgroup_pages+0x1d1/0x420 mm/vmscan.c:3916 try_charge_memcg+0x2ed/0xa40 mm/memcontrol.c:2627 try_charge mm/memcontrol.c:2769 [inline] mem_cgroup_charge_skmem+0x4d/0x130 mm/memcontrol.c:7119 sock_reserve_memory+0xb0/0x3a0 net/core/sock.c:1016 sock_setsockopt+0xeeb/0x1a40 net/core/sock.c:1482 __sys_setsockopt+0x242/0x2b0 net/socket.c:2248 __do_sys_setsockopt net/socket.c:2263 [inline] __se_sys_setsockopt net/socket.c:2260 [inline] __x64_sys_setsockopt+0x62/0x70 net/socket.c:2260 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+0x63/0xcd read to 0xffff888138da1d80 of 8 bytes by task 13513 on cpu 1: mapping_needs_writeback mm/filemap.c:627 [inline] file_write_and_wait_range+0x4b/0x170 mm/filemap.c:772 ext4_sync_file+0x105/0x6d0 fs/ext4/fsync.c:151 vfs_fsync_range+0x107/0x120 fs/sync.c:188 generic_write_sync include/linux/fs.h:2869 [inline] iomap_dio_complete+0x3e7/0x460 fs/iomap/direct-io.c:128 iomap_dio_rw+0x5e/0x80 fs/iomap/direct-io.c:694 ext4_dio_write_iter fs/ext4/file.c:566 [inline] ext4_file_write_iter+0xaa9/0x1210 fs/ext4/file.c:677 do_iter_write+0x494/0x750 fs/read_write.c:855 vfs_iter_write+0x4c/0x70 fs/read_write.c:896 iter_file_splice_write+0x44a/0x7c0 fs/splice.c:686 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0x80/0xa0 fs/splice.c:931 splice_direct_to_actor+0x305/0x620 fs/splice.c:886 do_splice_direct+0xfb/0x180 fs/splice.c:974 do_sendfile+0x3bf/0x910 fs/read_write.c:1249 __do_sys_sendfile64 fs/read_write.c:1317 [inline] __se_sys_sendfile64 fs/read_write.c:1303 [inline] __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1303 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+0x63/0xcd value changed: 0x000000000000005b -> 0x000000000000004e Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 13513 Comm: syz-executor.4 Not tainted 6.0.0-rc4-syzkaller-00331-g4ed9c1e971b1-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 ==================================================================