syzbot

bash-4.3$ kernel panic at kern/src/ns/qio.c:1356, from core 0: assertion failed: BLEN(b) <= len - sofar
Stack Backtrace on Core 0:
#01 [<0xffffffffc200a3e7>] in backtrace at src/kdebug.c:219
#02 [<0xffffffffc2009bb2>] in _panic at src/init.c:273
#03 [<0xffffffffc203a24b>] in read_all_blocks at src/ns/qio.c:1356
#04 [<0xffffffffc203c964>] in qread at src/ns/qio.c:1439
#05 [<0xffffffffc2014b2b>] in ipread at src/net/devip.c:872
#06 [<0xffffffffc203f8a3>] in rread at src/ns/sysfile.c:763
#07 [<0xffffffffc203fa4b>] in sysread at src/ns/sysfile.c:821
#08 [<0xffffffffc2055f11>] in sys_read at src/syscall.c:1779
#09 [<0xffffffffc20593c9>] in syscall at src/syscall.c:2528
#10 [<0xffffffffc2059584>] in run_local_syscall at src/syscall.c:2563
#11 [<0xffffffffc2059ab9>] in prep_syscalls at src/syscall.c:2583
#12 [<0xffffffffc20ab29a>] in sysenter_callwrapper at arch/x86/trap.c:851