syzbot

kernel panic at kern/src/arena.c:707, from core 0: Arena kpages, request for zero
Stack Backtrace on Core 0:
#01 [<0xffffffffc200a2dc>] in backtrace at src/kdebug.c:220
#02 [<0xffffffffc2009afd>] in _panic at src/init.c:268
#03 [<0xffffffffc200251f>] in arena_alloc at src/arena.c:707
#04 [<0xffffffffc2046045>] in kpages_alloc at src/page_alloc.c:80
#05 [<0xffffffffc200a71e>] in kmalloc at src/kmalloc.c:62
#06 [<0xffffffffc200a7df>] in kzmalloc at src/kmalloc.c:88
#07 [<0xffffffffc20392e1>] in parsecmd at src/ns/parse.c:78
#08 [<0xffffffffc207bdae>] in kprof_write at drivers/dev/kprof.c:357
#09 [<0xffffffffc2040241>] in rwrite at src/ns/sysfile.c:1123
#10 [<0xffffffffc204045b>] in syswrite at src/ns/sysfile.c:1141
#11 [<0xffffffffc2055f81>] in sys_write at src/syscall.c:1785
#12 [<0xffffffffc2059459>] in syscall at src/syscall.c:2528
#13 [<0xffffffffc2059624>] in run_local_syscall at src/syscall.c:2563
#14 [<0xffffffffc2059b59>] in prep_syscalls at src/syscall.c:2583
#15 [<0xffffffffc20ab41a>] in sysenter_callwrapper at arch/x86/trap.c:854