kernel: protection fault trap, code=0 Stopped at malloc+0x855: movq 0x8(%rbx),%r14 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> show kasan No such command ddb{1}> trace malloc(10,62,2) at malloc+0x855 sys/kern/kern_malloc.c:294 amap_alloc1(20,2,0) at amap_alloc1+0x291 sys/uvm/uvm_amap.c:356 amap_alloc(20000,2,0) at amap_alloc+0xad sys/uvm/uvm_amap.c:-1 amap_copy(fffff2806f03b5c8,fffff2806fd04240,2,0,41b21228000,41b21228001) at amap_copy+0x6a8 sys/uvm/uvm_amap.c:570 uvm_fault_check(ffff80003a3a2190,ffff80003a3a21c8,ffff80003a3a2200,0) at uvm_fault_check+0x473 sys/uvm/uvm_fault.c:747 uvm_fault(fffff2806f03b5c8,41b21228000,0,2) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627 upageflttrap(ffff80003a3a2330,41b21228a88) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:194 usertrap(ffff80003a3a2330) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:648 recall_trap() at recall_trap+0x8 end trace frame: 0x0, count: -9 ddb{1}> show registers rdi 0x76b2bd313ce95a9c rsi 0 rbp 0xffff80003a3a1e30 rbx 0x76b2bd313ce95a9c rdx 0 rcx 0xffff80002a23b4e8 rax 0xffff80002998dff0 r8 0x41b21228000 r9 0x41b21228001 r10 0 r11 0x1e10dedde6fa5c0c r12 0 r13 0xffffffff83b78c20 kmemstats+0x1880 r14 0xa30c333 __kernel_phys_end+0x670c333 r15 0x76b2bd313ce95a9c rip 0xffffffff832b4385 malloc+0x855 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff80003a3a1d70 ss 0 malloc+0x855: movq 0x8(%rbx),%r14 ddb{1}> show proc PROC (syz-executor) tid=473972 pid=82270 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a23b250,0xffffffff83b3c270 process=0xffff800045ff4008 user=0xffff80003a39d000, vmspace=0xfffff2806f03b5c8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 12109 132181 77206 0 2 0x100002 0 sh 82270 99021 47970 0 2 0 0 syz-executor 82270 505273 47970 0 3 0 0x4000080 fsleep syz-executor *82270 473972 47970 0 7 0 0x4000000 syz-executor 83018 261678 26375 0 2 0x40 0 syz-executor 54768 494539 7466 0 2 0 0 syz-executor 54768 290923 7466 0 3 0 0x4000080 fsleep syz-executor 54768 409291 7466 0 3 0 0x4000080 fsleep syz-executor 54768 274385 7466 0 3 0 0x4000080 fsleep syz-executor 54768 468654 7466 0 3 0 0x4000080 fsleep syz-executor 40819 266933 95320 0 2 0 0 syz-executor 40819 311129 95320 0 3 0 0x4000080 fsleep syz-executor 40819 237031 95320 0 2 0 0x4000000 syz-executor 26375 29129 21711 0 3 0x82 0 ppwait syz-executor 77206 92709 21711 0 3 0x2 0x80 wait syz-executor 47970 290484 21711 0 3 0x2 0x80 nanoslp syz-executor 78387 193267 21711 0 7 0x2 0 syz-executor 7466 122596 21711 0 3 0x2 0x80 nanoslp syz-executor 4984 348536 21711 0 3 0x2 0x80 nanoslp syz-executor 69200 310078 21711 0 3 0x2 0x80 nanoslp syz-executor 95320 398365 21711 0 3 0x2 0x80 nanoslp syz-executor 16113 171948 0 0 3 0x14000 0x280 nfsidl nfsio 91716 511824 0 0 3 0x14000 0x280 nfsidl nfsio 34659 467866 0 0 3 0x14000 0x280 nfsidl nfsio 5401 376030 0 0 3 0x14000 0x280 nfsidl nfsio 97405 506721 0 0 3 0x14000 0x280 nfsidl nfsio 83828 408110 0 0 3 0x14000 0x280 nfsidl nfsio 23841 336196 0 0 3 0x14000 0x280 nfsidl nfsio 79969 88027 0 0 3 0x14000 0x280 nfsidl nfsio 76835 493579 0 0 3 0x14000 0x280 nfsidl nfsio 10363 326450 0 0 3 0x14000 0x280 nfsidl nfsio 22809 255945 0 0 3 0x14000 0x280 nfsidl nfsio 28519 479881 0 0 3 0x14000 0x280 nfsidl nfsio 94214 138370 0 0 3 0x14000 0x280 nfsidl nfsio 15769 186622 0 0 3 0x14000 0x280 nfsidl nfsio 36933 371544 0 0 3 0x14000 0x280 nfsidl nfsio 83453 306042 0 0 3 0x14000 0x280 nfsidl nfsio 40998 259956 0 0 3 0x14000 0x280 nfsidl nfsio 87312 248832 0 0 3 0x14000 0x280 nfsidl nfsio 90262 406955 0 0 3 0x14000 0x280 nfsidl nfsio 52015 211503 0 0 3 0x14000 0x280 nfsidl nfsio 90254 211381 1 0 3 0x100003 0x80 ttyin getty 21711 92422 1 0 3 0x2 0x80 kqread syz-executor 23059 480368 0 0 2 0x14000 0x40000200 smr 92006 351664 0 0 2 0x14000 0x200 zerothread 41174 317587 0 0 3 0x14000 0x200 aiodoned aiodoned 96752 7577 0 0 3 0x14000 0x200 syncer update 5137 92629 0 0 3 0x14000 0x200 cleaner cleaner 59100 134463 0 0 3 0x14000 0x200 reaper reaper 36291 364645 0 0 3 0x14000 0x200 pgdaemon pagedaemon 14692 261861 0 0 3 0x14000 0x200 bored viomb 40660 421844 0 0 3 0x14000 0x40000200 acpi0 acpi0 76906 191102 0 0 3 0x14000 0x40000200 idle1 10048 94355 0 0 3 0x14000 0x200 bored softnet1 60590 520293 0 0 3 0x14000 0x200 bored softnet0 18324 99030 0 0 3 0x14000 0x200 smrbar systqmp 54672 96767 0 0 3 0x14000 0x200 bored systq 10670 522039 0 0 3 0x14000 0x200 tmoslp softclockmp 14983 503210 0 0 3 0x14000 0x40000200 tmoslp softclock 92808 230460 0 0 3 0x14000 0x40000200 idle0 1 405398 0 0 3 0x2 0x80 wait init 0 0