syzbot

kernel panic at kern/src/ns/qio.c:1315, from core 0: assertion failed: b->rp
Stack Backtrace on Core 0:
#01 [<0xffffffffc200a7fc>] in backtrace at src/kdebug.c:235
#02 [<0xffffffffc2009f95>] in _panic at src/init.c:275
#03 [<0xffffffffc203ac23>] in read_all_blocks at src/ns/qio.c:1315
#04 [<0xffffffffc203cf94>] in qread at src/ns/qio.c:1399
#05 [<0xffffffffc2045dd1>] in profiler_read at src/profiler.c:527
#06 [<     [inline]     >] in kprof_profdata_read at drivers/dev/kprof.c:194
#06 [<0xffffffffc207cc4d>] in kprof_read at drivers/dev/kprof.c:337
#07 [<0xffffffffc203fc2d>] in rread at src/ns/sysfile.c:772
#08 [<0xffffffffc203ff8b>] in sysread at src/ns/sysfile.c:830
#09 [<0xffffffffc20590e9>] in sys_read at src/syscall.c:1786
#10 [<0xffffffffc2059f49>] in syscall at src/syscall.c:2582
#11 [<0xffffffffc205aad8>] in run_local_syscall at src/syscall.c:2619
#12 [<0xffffffffc205b019>] in prep_syscalls at src/syscall.c:2639
#13 [<0xffffffffc20b6282>] in sysenter_callwrapper at arch/x86/trap.c:926