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BUG: KCSAN: data-race in touch_atime / touch_atime

write to 0xffff888119c532d0 of 8 bytes by task 3180 on cpu 0:
 inode_set_atime_to_ts include/linux/fs.h:1557 [inline]
 inode_update_timestamps fs/inode.c:1878 [inline]
 generic_update_time fs/inode.c:1900 [inline]
 inode_update_time fs/inode.c:1920 [inline]
 touch_atime+0x1f3/0x350 fs/inode.c:1992
 file_accessed include/linux/fs.h:2458 [inline]
 shmem_file_read_iter+0x4b3/0x550 mm/shmem.c:2899
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x5e6/0x6e0 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+0x27e5/0x2d70 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 0xffff888119c532d0 of 8 bytes by task 3299 on cpu 1:
 inode_get_atime include/linux/fs.h:1551 [inline]
 inode_update_timestamps fs/inode.c:1875 [inline]
 generic_update_time fs/inode.c:1900 [inline]
 inode_update_time fs/inode.c:1920 [inline]
 touch_atime+0x1a0/0x350 fs/inode.c:1992
 file_accessed include/linux/fs.h:2458 [inline]
 shmem_file_read_iter+0x4b3/0x550 mm/shmem.c:2899
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x5e6/0x6e0 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+0x27e5/0x2d70 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: 0x0000000031efaafb -> 0x0000000033b96e7b

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3299 Comm: udevd Not tainted 6.10.0-rc4-syzkaller-00052-ge5b3efbe1ab1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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