================================================================== BUG: KCSAN: data-race in __delete_from_page_cache / filemap_write_and_wait_range write to 0xffff8881249bdb50 of 8 bytes by task 28222 on cpu 1: page_cache_delete mm/filemap.c:152 [inline] __delete_from_page_cache+0x1d8/0x4a0 mm/filemap.c:237 invalidate_complete_page2 mm/truncate.c:639 [inline] invalidate_inode_pages2_range+0x757/0xbb0 mm/truncate.c:732 generic_file_direct_write+0x110/0x2e0 mm/filemap.c:3195 __generic_file_write_iter+0x17e/0x380 mm/filemap.c:3390 ext4_file_write_iter+0x1bd/0xa00 fs/ext4/file.c:268 call_write_iter include/linux/fs.h:1895 [inline] do_iter_readv_writev+0x487/0x5b0 fs/read_write.c:693 do_iter_write fs/read_write.c:970 [inline] do_iter_write+0x13b/0x3c0 fs/read_write.c:951 vfs_iter_write+0x5c/0x80 fs/read_write.c:983 iter_file_splice_write+0x4c0/0x7f0 fs/splice.c:746 do_splice_from fs/splice.c:848 [inline] direct_splice_actor+0xa0/0xc0 fs/splice.c:1020 splice_direct_to_actor+0x215/0x510 fs/splice.c:975 do_splice_direct+0x161/0x1e0 fs/splice.c:1063 do_sendfile+0x384/0x7f0 fs/read_write.c:1464 __do_sys_sendfile64 fs/read_write.c:1525 [inline] __se_sys_sendfile64 fs/read_write.c:1511 [inline] __x64_sys_sendfile64+0x12a/0x140 fs/read_write.c:1511 read to 0xffff8881249bdb50 of 8 bytes by task 28224 on cpu 0: mapping_needs_writeback mm/filemap.c:631 [inline] filemap_write_and_wait_range+0x6f/0x150 mm/filemap.c:679 generic_file_read_iter+0x1015/0x1440 mm/filemap.c:2293 ext4_file_read_iter fs/ext4/file.c:77 [inline] ext4_file_read_iter+0xfa/0x240 fs/ext4/file.c:65 call_read_iter include/linux/fs.h:1889 [inline] generic_file_splice_read+0x35c/0x500 fs/splice.c:307 do_splice_to+0xf2/0x130 fs/splice.c:877 splice_direct_to_actor+0x1a1/0x510 fs/splice.c:954 do_splice_direct+0x161/0x1e0 fs/splice.c:1063 do_sendfile+0x384/0x7f0 fs/read_write.c:1464 __do_sys_sendfile64 fs/read_write.c:1525 [inline] __se_sys_sendfile64 fs/read_write.c:1511 [inline] __x64_sys_sendfile64+0x12a/0x140 fs/read_write.c:1511 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 28224 Comm: syz-executor.4 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================