================================================================== BUG: KCSAN: data-race in __ext4_handle_dirty_metadata / jbd2_journal_update_sb_log_tail write to 0xffff888102a7d800 of 8 bytes by task 341 on cpu 1: jbd2_journal_update_sb_log_tail+0x176/0x1b0 fs/jbd2/journal.c:1689 jbd2_journal_commit_transaction+0x21a/0x3430 fs/jbd2/commit.c:430 kjournald2+0x268/0x490 fs/jbd2/journal.c:213 kthread+0x262/0x280 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 read to 0xffff888102a7d800 of 8 bytes by task 9267 on cpu 0: is_journal_aborted include/linux/jbd2.h:1695 [inline] is_handle_aborted include/linux/jbd2.h:1702 [inline] __ext4_handle_dirty_metadata+0x14f/0x5a0 fs/ext4/ext4_jbd2.c:350 ext4_do_update_inode fs/ext4/inode.c:5095 [inline] ext4_mark_iloc_dirty+0x12f8/0x1700 fs/ext4/inode.c:5683 __ext4_mark_inode_dirty+0x4ec/0x5c0 fs/ext4/inode.c:5879 ext4_dirty_inode+0x86/0xa0 fs/ext4/inode.c:5908 __mark_inode_dirty+0x77/0x6a0 fs/fs-writeback.c:2398 mark_inode_dirty include/linux/fs.h:2452 [inline] generic_write_end+0x157/0x180 fs/buffer.c:2202 ext4_da_write_end+0x4cc/0x5e0 fs/ext4/inode.c:3062 generic_perform_write+0x251/0x3e0 mm/filemap.c:3781 ext4_buffered_write_iter+0x305/0x400 fs/ext4/file.c:269 ext4_file_write_iter+0x2e7/0x11f0 call_write_iter include/linux/fs.h:2163 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x7bc/0x900 fs/read_write.c:594 ksys_write+0xd9/0x190 fs/read_write.c:647 __do_sys_write fs/read_write.c:659 [inline] __se_sys_write fs/read_write.c:656 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:656 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x0000000000000038 -> 0x0000000000000230 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 9267 Comm: syz-executor.1 Tainted: G W 5.15.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================