syzbot

kernel panic at kern/src/mm.c:740, from core 3: assertion failed: !pte_is_mapped(pte)
Stack Backtrace on Core 3:
#01 [<0xffffffffc200a33c>] in backtrace at src/kdebug.c:220
#02 [<0xffffffffc2009b3d>] in _panic at src/init.c:268
#03 [<0xffffffffc200da83>] in map_page_at_addr at src/mm.c:740
#04 [<0xffffffffc200dad2>] in populate_anon_va at src/mm.c:773
#05 [<0xffffffffc200fb42>] in populate_va at src/mm.c:1336
#06 [<0xffffffffc20564a0>] in sys_populate_va at src/syscall.c:1692
#07 [<0xffffffffc2059569>] in syscall at src/syscall.c:2455
#08 [<0xffffffffc2059734>] in run_local_syscall at src/syscall.c:2490
#09 [<0xffffffffc2059c69>] in prep_syscalls at src/syscall.c:2510
#10 [<0xffffffffc20ab5fa>] in sysenter_callwrapper at arch/x86/trap.c:854