syzbot

kernel panic at kern/src/ns/sysfile.c:719, from core 0: assertion failed: n >= sizeof(struct kdirent)
Stack Backtrace on Core 0:
#01 [<0xffffffffc200a2dc>] in backtrace at src/kdebug.c:220
#02 [<0xffffffffc2009afd>] in _panic at src/init.c:268
#03 [<0xffffffffc203f72b>] in rread at src/ns/sysfile.c:719
#04 [<0xffffffffc203f81b>] in sysread at src/ns/sysfile.c:821
#05 [<0xffffffffc2055f51>] in sys_read at src/syscall.c:1779
#06 [<0xffffffffc2059409>] in syscall at src/syscall.c:2528
#07 [<0xffffffffc20595d4>] in run_local_syscall at src/syscall.c:2563
#08 [<0xffffffffc2059b09>] in prep_syscalls at src/syscall.c:2583
#09 [<0xffffffffc20ab36a>] in sysenter_callwrapper at arch/x86/trap.c:854