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BUG: KCSAN: data-race in ksys_read / ksys_read

write to 0xffff888122b32a68 of 8 bytes by task 2301 on cpu 1:
 ksys_read+0x10c/0x190 fs/read_write.c:621
 __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

read to 0xffff888122b32a68 of 8 bytes by task 2319 on cpu 0:
 ksys_read+0x9c/0x190 fs/read_write.c:616
 __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

value changed: 0x0000000000000000 -> 0x0000000000000031

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 2319 Comm: syz-executor.4 Not tainted 5.17.0-rc8-syzkaller-00061-g34e047aa16c0-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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