KCSAN: data-race in ext4_es_lookup_extent / ext4_es_lookup

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in ext4_es_lookup_extent / ext4_es_lookup_extent (4) ext4	6	1	2294d	2294d	0/29	auto-closed as invalid on 2020/06/18 13:13
upstream	KCSAN: data-race in ext4_es_lookup_extent / ext4_es_lookup_extent (5) ext4	6	3	2147d	2203d	0/29	auto-closed as invalid on 2020/10/30 13:53
upstream	KCSAN: data-race in ext4_es_lookup_extent / ext4_es_lookup_extent (3) ext4	6	5	2386d	2473d	0/29	auto-closed as invalid on 2020/04/09 02:07
upstream	KCSAN: data-race in ext4_es_lookup_extent / ext4_es_lookup_extent (8) ext4	6	6	1901d	1950d	0/29	auto-closed as invalid on 2021/07/03 03:54
upstream	KCSAN: data-race in ext4_es_lookup_extent / ext4_es_lookup_extent (9) ext4	6	4	1734d	1744d	0/29	auto-closed as invalid on 2021/12/17 02:26
upstream	KCSAN: data-race in ext4_es_lookup_extent / ext4_es_lookup_extent (2) ext4	6	1	2493d	2492d	0/29	closed as invalid on 2019/10/18 14:11
upstream	KCSAN: data-race in ext4_es_lookup_extent / ext4_es_lookup_extent ext4	6	60	2493d	2504d	0/29	closed as invalid on 2019/10/15 15:50
upstream	KCSAN: data-race in ext4_es_lookup_extent / ext4_es_lookup_extent (7) ext4	6	2	2035d	2056d	0/29	auto-closed as invalid on 2021/02/19 02:54

================================================================== BUG: KCSAN: data-race in ext4_es_lookup_extent / ext4_es_lookup_extent read to 0xffff88810d8dd6d8 of 8 bytes by task 13277 on cpu 1: ext4_es_lookup_extent+0x2a8/0x500 fs/ext4/extents_status.c:966 ext4_map_blocks+0x105/0xfc0 fs/ext4/inode.c:520 ext4_iomap_begin+0x167/0x690 fs/ext4/inode.c:3470 iomap_apply+0x8d/0x4a0 fs/iomap/apply.c:46 __iomap_dio_rw+0x448/0x9b0 fs/iomap/direct-io.c:517 iomap_dio_rw+0x30/0x70 fs/iomap/direct-io.c:605 ext4_dio_read_iter fs/ext4/file.c:77 [inline] ext4_file_read_iter+0x3bd/0x420 fs/ext4/file.c:129 call_read_iter include/linux/fs.h:1881 [inline] generic_file_splice_read+0x22a/0x310 fs/splice.c:311 do_splice_to fs/splice.c:788 [inline] splice_direct_to_actor+0x2aa/0x650 fs/splice.c:867 do_splice_direct+0xf5/0x170 fs/splice.c:976 do_sendfile+0x574/0xb70 fs/read_write.c:1257 __do_sys_sendfile64 fs/read_write.c:1318 [inline] __se_sys_sendfile64 fs/read_write.c:1304 [inline] __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1304 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff88810d8dd6d8 of 8 bytes by task 13287 on cpu 0: ext4_es_set_referenced fs/ext4/extents_status.h:194 [inline] ext4_es_lookup_extent+0x2f7/0x500 fs/ext4/extents_status.c:968 ext4_map_blocks+0x105/0xfc0 fs/ext4/inode.c:520 ext4_iomap_begin+0x167/0x690 fs/ext4/inode.c:3470 iomap_apply+0x8d/0x4a0 fs/iomap/apply.c:46 __iomap_dio_rw+0x448/0x9b0 fs/iomap/direct-io.c:517 iomap_dio_rw+0x30/0x70 fs/iomap/direct-io.c:605 ext4_dio_read_iter fs/ext4/file.c:77 [inline] ext4_file_read_iter+0x3bd/0x420 fs/ext4/file.c:129 call_read_iter include/linux/fs.h:1881 [inline] generic_file_splice_read+0x22a/0x310 fs/splice.c:311 do_splice_to fs/splice.c:788 [inline] splice_direct_to_actor+0x2aa/0x650 fs/splice.c:867 do_splice_direct+0xf5/0x170 fs/splice.c:976 do_sendfile+0x574/0xb70 fs/read_write.c:1257 __do_sys_sendfile64 fs/read_write.c:1318 [inline] __se_sys_sendfile64 fs/read_write.c:1304 [inline] __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1304 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 13287 Comm: syz-executor.0 Not tainted 5.10.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================