==================================================================
BUG: KCSAN: data-race in copy_page_to_iter / fat_set_state

write to 0xffff88812082a025 of 1 bytes by task 1847 on cpu 0:
 fat_set_state+0x16c/0x1d0
 fat_put_super+0x2a/0x80 fs/fat/inode.c:735
 generic_shutdown_super+0xdf/0x250 fs/super.c:465
 kill_block_super+0x4a/0x90 fs/super.c:1397
 deactivate_locked_super+0x6a/0xb0 fs/super.c:335
 deactivate_super+0x85/0x90 fs/super.c:366
 cleanup_mnt+0x267/0x2d0 fs/namespace.c:1143
 __cleanup_mnt+0x15/0x20 fs/namespace.c:1150
 task_work_run+0x8e/0x110 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x160/0x190 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300
 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff88812082a000 of 1377 bytes by task 2236 on cpu 1:
 instrument_copy_to_user include/linux/instrumented.h:119 [inline]
 copyout lib/iov_iter.c:154 [inline]
 copy_page_to_iter_iovec lib/iov_iter.c:226 [inline]
 __copy_page_to_iter lib/iov_iter.c:850 [inline]
 copy_page_to_iter+0x2cb/0x950 lib/iov_iter.c:878
 copy_folio_to_iter include/linux/uio.h:153 [inline]
 filemap_read+0x1126/0x1430 mm/filemap.c:2649
 blkdev_read_iter+0xcb/0x350 block/fops.c:610
 call_read_iter include/linux/fs.h:2080 [inline]
 new_sync_read fs/read_write.c:400 [inline]
 vfs_read+0x66c/0x750 fs/read_write.c:481
 ksys_read+0xd9/0x190 fs/read_write.c:619
 __do_sys_read fs/read_write.c:629 [inline]
 __se_sys_read fs/read_write.c:627 [inline]
 __x64_sys_read+0x3e/0x50 fs/read_write.c:627
 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

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 2236 Comm: udevd Tainted: G        W         5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
I/O error, dev loop3, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
I/O error, dev loop3, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
I/O error, dev loop3, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Buffer I/O error on dev loop3p4, logical block 0, async page read
 loop3: p1 < > p2 p3 p4 < p5 p6 >
loop3: partition table partially beyond EOD, truncated
loop3: p1 start 10 is beyond EOD, truncated
loop3: p2 start 6 is beyond EOD, truncated
loop3: p3 start 225 is beyond EOD, truncated
loop3: p4 size 2 extends beyond EOD, truncated
loop3: p5 start 6 is beyond EOD, truncated
loop3: p6 start 225 is beyond EOD, truncated
I/O error, dev loop3, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
Buffer I/O error on dev loop3p4, logical block 0, async page read
 loop3: p1 < > p2 p3 p4 < p5 p6 >
loop3: partition table partially beyond EOD, truncated
loop3: p1 start 10 is beyond EOD, truncated
loop3: p2 start 6 is beyond EOD, truncated
loop3: p3 start 225 is beyond EOD, truncated
loop3: p4 size 2 extends beyond EOD, truncated
loop3: p5 start 6 is beyond EOD, truncated
loop3: p6 start 225 is beyond EOD, truncated
Buffer I/O error on dev loop3p4, logical block 0, async page read
udevd[2236]: inotify_add_watch(7, /dev/loop3p4, 10) failed: No such file or directory
udevd[2236]: inotify_add_watch(7, /dev/loop3p4, 10) failed: No such file or directory
udevd[2236]: inotify_add_watch(7, /dev/loop3p4, 10) failed: No such file or directory
udevd[2236]: inotify_add_watch(7, /dev/loop3p4, 10) failed: No such file or directory
udevd[2236]: inotify_add_watch(7, /dev/loop3p4, 10) failed: No such file or directory
udevd[2236]: inotify_add_watch(7, /dev/loop3p4, 10) failed: No such file or directory
udevd[2236]: inotify_add_watch(7, /dev/loop3p4, 10) failed: No such file or directory
udevd[2236]: inotify_add_watch(7, /dev/loop3p4, 10) failed: No such file or directory
I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Buffer I/O error on dev loop2p3, logical block 0, async page read
I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
udevd[2236]: inotify_add_watch(7, /dev/loop2p3, 10) failed: No such file or directory