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BUG: KCSAN: data-race in ext4_es_lookup_extent / ext4_es_lookup_extent

write to 0xffff888129e05428 of 8 bytes by task 7419 on cpu 1:
 ext4_es_lookup_extent+0x3d3/0x510 fs/ext4/extents_status.c:950
 ext4_map_blocks+0xc2/0xf70 fs/ext4/inode.c:530
 _ext4_get_block+0x12d/0x2b0 fs/ext4/inode.c:791
 ext4_dio_get_block fs/ext4/inode.c:868 [inline]
 ext4_dio_get_block+0x9f/0xb0 fs/ext4/inode.c:861
 get_more_blocks fs/direct-io.c:710 [inline]
 do_direct_IO+0x1409/0x59b0 fs/direct-io.c:995
 do_blockdev_direct_IO+0x6b7/0x4cc0 fs/direct-io.c:1327
 __blockdev_direct_IO+0x86/0xa0 fs/direct-io.c:1413
 ext4_direct_IO_read fs/ext4/inode.c:3881 [inline]
 ext4_direct_IO+0x32f/0xf70 fs/ext4/inode.c:3913
 generic_file_read_iter+0x1b0/0x1440 mm/filemap.c:2323
 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:1864 [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

read to 0xffff888129e05428 of 8 bytes by task 7434 on cpu 0:
 ext4_es_lookup_extent+0x3ba/0x510 fs/ext4/extents_status.c:950
 ext4_map_blocks+0xc2/0xf70 fs/ext4/inode.c:530
 _ext4_get_block+0x12d/0x2b0 fs/ext4/inode.c:791
 ext4_dio_get_block fs/ext4/inode.c:868 [inline]
 ext4_dio_get_block+0x9f/0xb0 fs/ext4/inode.c:861
 get_more_blocks fs/direct-io.c:710 [inline]
 do_direct_IO+0x1409/0x59b0 fs/direct-io.c:995
 do_blockdev_direct_IO+0x6b7/0x4cc0 fs/direct-io.c:1327
 __blockdev_direct_IO+0x86/0xa0 fs/direct-io.c:1413
 ext4_direct_IO_read fs/ext4/inode.c:3881 [inline]
 ext4_direct_IO+0x32f/0xf70 fs/ext4/inode.c:3913
 generic_file_read_iter+0x1b0/0x1440 mm/filemap.c:2323
 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:1864 [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

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 7434 Comm: syz-executor.0 Not tainted 5.3.0+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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