================================================================== BUG: KCSAN: data-race in __ext4_update_other_inode_time / __mark_inode_dirty write to 0xffff888104b433b0 of 8 bytes by task 502 on cpu 1: __mark_inode_dirty+0x1c4/0x6a0 fs/fs-writeback.c:2433 mark_inode_dirty include/linux/fs.h:2452 [inline] dquot_alloc_space include/linux/quotaops.h:317 [inline] dquot_alloc_block include/linux/quotaops.h:334 [inline] ext4_mb_new_blocks+0x119b/0x1fc0 fs/ext4/mballoc.c:5548 ext4_ext_map_blocks+0x15ed/0x1ff0 fs/ext4/extents.c:4250 ext4_map_blocks+0x71e/0xf00 fs/ext4/inode.c:637 ext4_getblk+0xc6/0x3e0 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+0x2c3/0x3e0 fs/namei.c:3885 do_mkdirat+0x12e/0x2c0 fs/namei.c:3911 __do_sys_mkdir fs/namei.c:3931 [inline] __se_sys_mkdir fs/namei.c:3929 [inline] __x64_sys_mkdir+0x40/0x50 fs/namei.c:3929 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 read to 0xffff888104b433b0 of 8 bytes by task 506 on cpu 0: inode_is_dirtytime_only include/linux/fs.h:2471 [inline] __ext4_update_other_inode_time+0x48/0x5c0 fs/ext4/inode.c:4914 ext4_update_other_inodes_time fs/ext4/inode.c:4957 [inline] ext4_do_update_inode fs/ext4/inode.c:5091 [inline] ext4_mark_iloc_dirty+0x1286/0x1700 fs/ext4/inode.c:5683 __ext4_mark_inode_dirty+0x4ec/0x5c0 fs/ext4/inode.c:5879 __ext4_new_inode+0x2ae2/0x2fd0 fs/ext4/ialloc.c:1343 ext4_mkdir+0x28a/0x760 fs/ext4/namei.c:2929 vfs_mkdir+0x2c3/0x3e0 fs/namei.c:3885 do_mkdirat+0x12e/0x2c0 fs/namei.c:3911 __do_sys_mkdir fs/namei.c:3931 [inline] __se_sys_mkdir fs/namei.c:3929 [inline] __x64_sys_mkdir+0x40/0x50 fs/namei.c:3929 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: 0x0000000000008008 -> 0x000000000000800f Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 506 Comm: syz-executor.5 Not tainted 5.15.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================