================================================================== BUG: KCSAN: data-race in __ext4_handle_dirty_metadata / jbd2_journal_update_sb_log_tail read-write to 0xffff888103e0e000 of 8 bytes by task 1405 on cpu 1: jbd2_journal_update_sb_log_tail+0x16e/0x1a0 fs/jbd2/journal.c:1695 jbd2_journal_commit_transaction+0x22a/0x3180 fs/jbd2/commit.c:430 kjournald2+0x253/0x460 fs/jbd2/journal.c:213 kthread+0x1a9/0x1e0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 read to 0xffff888103e0e000 of 8 bytes by task 1839 on cpu 0: is_journal_aborted include/linux/jbd2.h:1689 [inline] is_handle_aborted include/linux/jbd2.h:1696 [inline] __ext4_handle_dirty_metadata+0x138/0x470 fs/ext4/ext4_jbd2.c:352 ext4_do_update_inode fs/ext4/inode.c:5143 [inline] ext4_mark_iloc_dirty+0x512/0x860 fs/ext4/inode.c:5724 __ext4_mark_inode_dirty+0x452/0x610 fs/ext4/inode.c:5920 ext4_dirty_inode+0x86/0xa0 fs/ext4/inode.c:5949 __mark_inode_dirty+0x70/0x5f0 fs/fs-writeback.c:2367 mark_inode_dirty include/linux/fs.h:2324 [inline] dquot_alloc_space include/linux/quotaops.h:317 [inline] dquot_alloc_block include/linux/quotaops.h:334 [inline] ext4_mb_new_blocks+0xce3/0xfd0 fs/ext4/mballoc.c:5578 ext4_ext_map_blocks+0xd55/0x1bb0 fs/ext4/extents.c:4281 ext4_map_blocks+0x75b/0xfc0 fs/ext4/inode.c:636 ext4_getblk+0xcb/0x410 fs/ext4/inode.c:847 ext4_bread+0x28/0x100 fs/ext4/inode.c:900 ext4_append+0xd1/0x1c0 fs/ext4/namei.c:67 ext4_init_new_dir+0x177/0x500 fs/ext4/namei.c:2893 ext4_mkdir+0x329/0x760 fs/ext4/namei.c:2939 vfs_mkdir+0x216/0x320 fs/namei.c:3931 do_mkdirat+0x105/0x280 fs/namei.c:3957 __do_sys_mkdirat fs/namei.c:3972 [inline] __se_sys_mkdirat fs/namei.c:3970 [inline] __x64_sys_mkdirat+0x4c/0x60 fs/namei.c:3970 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 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: 1839 Comm: syz-executor.4 Not tainted 5.18.0-rc6-syzkaller-00009-gfeb9c5e19e91 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================