================================================================== BUG: KCSAN: data-race in __ext4_update_other_inode_time / d_instantiate_new write to 0xffff88811e4a6bd0 of 8 bytes by task 1150 on cpu 0: d_instantiate_new+0x99/0xe0 fs/dcache.c:2031 ext4_add_nondir+0x172/0x1a0 fs/ext4/namei.c:2714 ext4_symlink+0x4ba/0x700 fs/ext4/namei.c:3363 vfs_symlink+0x241/0x330 fs/namei.c:4248 do_symlinkat+0x104/0x380 fs/namei.c:4277 __do_sys_symlink fs/namei.c:4299 [inline] __se_sys_symlink fs/namei.c:4297 [inline] __x64_sys_symlink+0x52/0x60 fs/namei.c:4297 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 0xffff88811e4a6bd0 of 8 bytes by task 1149 on cpu 1: inode_is_dirtytime_only include/linux/fs.h:2470 [inline] __ext4_update_other_inode_time+0x45/0x550 fs/ext4/inode.c:5010 ext4_update_other_inodes_time fs/ext4/inode.c:5053 [inline] ext4_do_update_inode fs/ext4/inode.c:5102 [inline] ext4_mark_iloc_dirty+0x4c6/0x890 fs/ext4/inode.c:5694 __ext4_mark_inode_dirty+0x4ec/0x5f0 fs/ext4/inode.c:5890 ext4_ext_tree_init+0x94/0xa0 fs/ext4/extents.c:870 __ext4_new_inode+0x29e6/0x2fc0 fs/ext4/ialloc.c:1334 ext4_symlink+0x2cc/0x700 fs/ext4/namei.c:3293 vfs_symlink+0x241/0x330 fs/namei.c:4248 do_symlinkat+0x104/0x380 fs/namei.c:4277 __do_sys_symlink fs/namei.c:4299 [inline] __se_sys_symlink fs/namei.c:4297 [inline] __x64_sys_symlink+0x52/0x60 fs/namei.c:4297 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: 0x0000000000008008 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 1149 Comm: syz-executor.2 Not tainted 5.16.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================