==================================================================
BUG: KCSAN: data-race in generic_update_time / other_inode_match

read to 0xffff8880b207fcc0 of 8 bytes by task 8110 on cpu 1:
 other_inode_match fs/ext4/inode.c:4863 [inline]
 other_inode_match+0x275/0x5c0 fs/ext4/inode.c:4842
 find_inode_nowait+0x135/0x160 fs/inode.c:1445
 ext4_update_other_inodes_time fs/ext4/inode.c:4897 [inline]
 ext4_do_update_inode fs/ext4/inode.c:5023 [inline]
 ext4_mark_iloc_dirty+0x12a8/0x1580 fs/ext4/inode.c:5578
 ext4_mark_inode_dirty+0xe9/0x420 fs/ext4/inode.c:5771
 ext4_rmdir fs/ext4/namei.c:3146 [inline]
 ext4_rmdir+0x623/0x700 fs/ext4/namei.c:3079
 vfs_rmdir fs/namei.c:3952 [inline]
 vfs_rmdir+0x119/0x300 fs/namei.c:3931
 do_rmdir+0x2cb/0x300 fs/namei.c:4014
 __do_sys_rmdir fs/namei.c:4032 [inline]
 __se_sys_rmdir fs/namei.c:4030 [inline]
 __x64_sys_rmdir+0x2f/0x40 fs/namei.c:4030
 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

write to 0xffff8880b207fcc0 of 16 bytes by task 6540 on cpu 0:
 generic_update_time+0x109/0x270 fs/inode.c:1674
 update_time+0x85/0x90 fs/inode.c:1694
 file_update_time+0x205/0x2d0 fs/inode.c:1909
 ext4_page_mkwrite+0xee/0x850 fs/ext4/inode.c:5920
 do_page_mkwrite+0x100/0x210 mm/memory.c:2364
 do_shared_fault mm/memory.c:3738 [inline]
 do_fault mm/memory.c:3806 [inline]
 handle_pte_fault mm/memory.c:4033 [inline]
 __handle_mm_fault+0x1e45/0x2e00 mm/memory.c:4163
 handle_mm_fault+0x21b/0x530 mm/memory.c:4200
 do_user_addr_fault arch/x86/mm/fault.c:1442 [inline]
 do_page_fault+0x496/0xa3d arch/x86/mm/fault.c:1517
 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1203

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 6540 Comm: syz-executor.5 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================