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BUG: KCSAN: data-race in __ext4_update_other_inode_time / __ext4_update_other_inode_time

write to 0xffff88813aeaec98 of 8 bytes by task 16078 on cpu 1:
 __ext4_update_other_inode_time+0xc1/0x550 fs/ext4/inode.c:4965
 ext4_update_other_inodes_time fs/ext4/inode.c:5001 [inline]
 ext4_do_update_inode fs/ext4/inode.c:5130 [inline]
 ext4_mark_iloc_dirty+0x1286/0x1650 fs/ext4/inode.c:5711
 __ext4_mark_inode_dirty+0x450/0x610 fs/ext4/inode.c:5905
 ext4_add_nondir+0xa2/0x190 fs/ext4/namei.c:2584
 ext4_symlink+0x532/0x770 fs/ext4/namei.c:3411
 vfs_symlink+0x216/0x2d0 fs/namei.c:3960
 do_symlinkat+0xee/0x280 fs/namei.c:3987
 __do_sys_symlink fs/namei.c:4006 [inline]
 __se_sys_symlink fs/namei.c:4004 [inline]
 __x64_sys_symlink+0x32/0x40 fs/namei.c:4004
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff88813aeaec98 of 8 bytes by task 16077 on cpu 0:
 __ext4_update_other_inode_time+0x45/0x550 fs/ext4/inode.c:4954
 ext4_update_other_inodes_time fs/ext4/inode.c:5001 [inline]
 ext4_do_update_inode fs/ext4/inode.c:5130 [inline]
 ext4_mark_iloc_dirty+0x1286/0x1650 fs/ext4/inode.c:5711
 __ext4_mark_inode_dirty+0x450/0x610 fs/ext4/inode.c:5905
 ext4_add_nondir+0xa2/0x190 fs/ext4/namei.c:2584
 ext4_symlink+0x532/0x770 fs/ext4/namei.c:3411
 vfs_symlink+0x216/0x2d0 fs/namei.c:3960
 do_symlinkat+0xee/0x280 fs/namei.c:3987
 __do_sys_symlink fs/namei.c:4006 [inline]
 __se_sys_symlink fs/namei.c:4004 [inline]
 __x64_sys_symlink+0x32/0x40 fs/namei.c:4004
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 16077 Comm: syz-executor.1 Not tainted 5.10.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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