================================================================== BUG: KCSAN: data-race in jbd2_journal_dirty_metadata / jbd2_journal_dirty_metadata write to 0xffff88810e57a9b4 of 4 bytes by task 4240 on cpu 1: jbd2_journal_dirty_metadata+0x2f6/0x690 fs/jbd2/transaction.c:1538 __ext4_handle_dirty_metadata+0xfb/0x5a0 fs/ext4/ext4_jbd2.c:350 ext4_mb_mark_diskspace_used+0x90e/0xc60 fs/ext4/mballoc.c:3879 ext4_mb_new_blocks+0xae8/0x1ee0 fs/ext4/mballoc.c:5600 ext4_ext_map_blocks+0x1658/0x2110 fs/ext4/extents.c:4282 ext4_map_blocks+0x757/0xfa0 fs/ext4/inode.c:638 ext4_iomap_alloc fs/ext4/inode.c:3354 [inline] ext4_iomap_begin+0x4b0/0x630 fs/ext4/inode.c:3404 iomap_iter+0x395/0x4a0 fs/iomap/iter.c:74 __iomap_dio_rw+0x6f2/0x10b0 fs/iomap/direct-io.c:589 iomap_dio_rw+0x38/0x80 fs/iomap/direct-io.c:680 ext4_dio_write_iter fs/ext4/file.c:564 [inline] ext4_file_write_iter+0xab3/0x11f0 fs/ext4/file.c:675 call_write_iter include/linux/fs.h:2074 [inline] do_iter_readv_writev+0x2de/0x380 fs/read_write.c:725 do_iter_write+0x192/0x5c0 fs/read_write.c:851 vfs_iter_write+0x4c/0x70 fs/read_write.c:892 iter_file_splice_write+0x43a/0x790 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+0x345/0x650 fs/splice.c:891 do_splice_direct+0x106/0x190 fs/splice.c:979 do_sendfile+0x675/0xc40 fs/read_write.c:1245 __do_sys_sendfile64 fs/read_write.c:1310 [inline] __se_sys_sendfile64 fs/read_write.c:1296 [inline] __x64_sys_sendfile64+0x102/0x140 fs/read_write.c:1296 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88810e57a9b4 of 4 bytes by task 4230 on cpu 0: jbd2_journal_dirty_metadata+0x16f/0x690 fs/jbd2/transaction.c:1506 __ext4_handle_dirty_metadata+0xfb/0x5a0 fs/ext4/ext4_jbd2.c:350 ext4_mb_mark_diskspace_used+0x90e/0xc60 fs/ext4/mballoc.c:3879 ext4_mb_new_blocks+0xae8/0x1ee0 fs/ext4/mballoc.c:5600 ext4_ext_map_blocks+0x1658/0x2110 fs/ext4/extents.c:4282 ext4_map_blocks+0x757/0xfa0 fs/ext4/inode.c:638 ext4_iomap_alloc fs/ext4/inode.c:3354 [inline] ext4_iomap_begin+0x4b0/0x630 fs/ext4/inode.c:3404 iomap_iter+0x395/0x4a0 fs/iomap/iter.c:74 __iomap_dio_rw+0x6f2/0x10b0 fs/iomap/direct-io.c:589 iomap_dio_rw+0x38/0x80 fs/iomap/direct-io.c:680 ext4_dio_write_iter fs/ext4/file.c:564 [inline] ext4_file_write_iter+0xab3/0x11f0 fs/ext4/file.c:675 call_write_iter include/linux/fs.h:2074 [inline] do_iter_readv_writev+0x2de/0x380 fs/read_write.c:725 do_iter_write+0x192/0x5c0 fs/read_write.c:851 vfs_iter_write+0x4c/0x70 fs/read_write.c:892 iter_file_splice_write+0x43a/0x790 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+0x345/0x650 fs/splice.c:891 do_splice_direct+0x106/0x190 fs/splice.c:979 do_sendfile+0x675/0xc40 fs/read_write.c:1245 __do_sys_sendfile64 fs/read_write.c:1310 [inline] __se_sys_sendfile64 fs/read_write.c:1296 [inline] __x64_sys_sendfile64+0x102/0x140 fs/read_write.c:1296 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000000 -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 4230 Comm: syz-executor.1 Not tainted 5.17.0-rc2-syzkaller-00039-g9f7fb8de5d9b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== syz-executor.1 (4230) used greatest stack depth: 9744 bytes left