==================================================================
BUG: KCSAN: data-race in atime_needs_update / touch_atime

write to 0xffff8881012343d8 of 4 bytes by task 3441 on cpu 1:
 inode_set_atime_to_ts include/linux/fs.h:1569 [inline]
 inode_update_timestamps fs/inode.c:1940 [inline]
 generic_update_time fs/inode.c:1962 [inline]
 inode_update_time fs/inode.c:1982 [inline]
 touch_atime+0x1f3/0x350 fs/inode.c:2054
 file_accessed include/linux/fs.h:2480 [inline]
 filemap_read+0x601/0x690 mm/filemap.c:2693
 blkdev_read_iter+0x217/0x2c0 block/fops.c:764
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x5e9/0x6e0 fs/read_write.c:476
 ksys_read+0xeb/0x1b0 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+0x42/0x50 fs/read_write.c:627
 x64_sys_call+0x27d3/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff8881012343d8 of 4 bytes by task 3439 on cpu 0:
 atime_needs_update+0x261/0x3e0
 touch_atime+0x4a/0x350 fs/inode.c:2037
 file_accessed include/linux/fs.h:2480 [inline]
 filemap_read+0x601/0x690 mm/filemap.c:2693
 blkdev_read_iter+0x217/0x2c0 block/fops.c:764
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x5e9/0x6e0 fs/read_write.c:476
 ksys_read+0xeb/0x1b0 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+0x42/0x50 fs/read_write.c:627
 x64_sys_call+0x27d3/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x22f09323 -> 0x238929a3

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 3439 Comm: udevd Not tainted 6.11.0-rc1-syzkaller-00272-g17712b7ea075 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
==================================================================
udevd[3439]: inotify_add_watch(7, /dev/loop0p3, 10) failed: No such file or directory
udevd[3439]: inotify_add_watch(7, /dev/loop0p3, 10) failed: No such file or directory
udevd[3439]: inotify_add_watch(7, /dev/loop0p3, 10) failed: No such file or directory