kernel: protection fault trap, code=0 Stopped at sys_msgrcv+0x3f2: movq 0x10(%r13),%rdi ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace sys_msgrcv(ffff80003a534a68,ffff80003a52d280,ffff80003a52d1d0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80003a534a68,ffff80003a52d280,ffff80003a52d1d0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003a52d280) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a52d280) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x98ef370dd20, count: -3 ddb> show registers rdi 0 rsi 0x200000001208 rbp 0xffff80003a52d1a0 rbx 0 rdx 0xffff80000146b240 rcx 0 rax 0xa r8 0x7f7fffffc000 r9 0 r10 0x44ceac04c95cdd3 r11 0x4ec98e2ab39aeab7 r12 0xfffffd8067c33f50 r13 0xdeaf4152deaf4152 r14 0xffff800001491a00 r15 0xa rip 0xffffffff830935d2 sys_msgrcv+0x3f2 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80003a52d100 ss 0x10 sys_msgrcv+0x3f2: movq 0x10(%r13),%rdi ddb> show proc PROC (syz-executor) tid=2457 pid=94857 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003a534f88,0xffff80003a534038 process=0xffff8000375168e0 user=0xffff80003a528000, vmspace=0xfffffd806c10fe28 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 9952 59760 42361 0 2 0 syz-executor 7767 370630 13802 0 2 0 syz-executor 7767 97686 13802 0 3 0x4000080 piperd syz-executor 88066 216942 78095 0 2 0 syz-executor 88066 220709 78095 0 3 0x4000080 fsleep syz-executor 16996 198954 61758 0 2 0 syz-executor 16996 323631 61758 0 2 0x4000000 syz-executor 87616 319446 36098 0 2 0 syz-executor 87616 215910 36098 0 3 0x4000080 fsleep syz-executor 94857 452475 35419 0 2 0 syz-executor *94857 2457 35419 0 7 0x4000000 syz-executor 94857 42483 35419 0 3 0x4000080 fsleep syz-executor 94857 174049 35419 0 2 0x4000000 syz-executor 94857 165989 35419 0 2 0x4000000 syz-executor 36254 375465 90618 0 2 0 syz-executor 36254 406068 90618 0 3 0x4000080 kqpoll syz-executor 36254 372892 90618 0 3 0x4000080 fsleep syz-executor 36254 81090 90618 0 3 0x4000080 fsleep syz-executor 36495 365415 0 0 3 0x14200 acct acct 15985 255347 0 0 3 0x14280 nfsidl nfsio 35783 296270 0 0 3 0x14280 nfsidl nfsio 21118 462053 0 0 3 0x14280 nfsidl nfsio 3756 429014 0 0 3 0x14280 nfsidl nfsio 50312 427672 0 0 3 0x14280 nfsidl nfsio 96450 439217 0 0 3 0x14280 nfsidl nfsio 36280 78710 0 0 3 0x14280 nfsidl nfsio 11283 9628 0 0 3 0x14280 nfsidl nfsio 88726 325044 0 0 3 0x14280 nfsidl nfsio 62212 299975 0 0 3 0x14280 nfsidl nfsio 68311 492778 0 0 3 0x14280 nfsidl nfsio 73907 188181 0 0 3 0x14280 nfsidl nfsio 94627 374387 0 0 3 0x14280 nfsidl nfsio 72581 339894 0 0 3 0x14280 nfsidl nfsio 131 279906 0 0 3 0x14280 nfsidl nfsio 7298 311560 0 0 3 0x14280 nfsidl nfsio 14384 495233 0 0 3 0x14280 nfsidl nfsio 57664 73816 0 0 3 0x14280 nfsidl nfsio 45444 279794 0 0 3 0x14280 nfsidl nfsio 3048 379047 0 0 3 0x14280 nfsidl nfsio 36186 310431 0 0 3 0x14200 bored sosplice 78095 4025 23255 0 3 0x82 nanoslp syz-executor 36098 274284 23255 0 3 0x82 nanoslp syz-executor 90618 8874 23255 0 3 0x82 nanoslp syz-executor 13802 54766 23255 0 3 0x82 nanoslp syz-executor 35419 48361 23255 0 3 0x82 nanoslp syz-executor 42361 496431 23255 0 3 0x82 nanoslp syz-executor 61758 420062 23255 0 3 0x82 nanoslp syz-executor 88236 225518 23255 0 2 0x2 syz-executor 23255 353647 88567 0 3 0x82 kqread syz-executor 88567 375951 72698 0 3 0x10008a sigsusp ksh 72698 79672 94394 0 3 0x98 kqread sshd-session 94394 499392 15828 0 3 0x92 kqread sshd-session 59495 194248 1 0 3 0x100083 ttyopn getty 15828 384592 1 0 3 0x88 kqread sshd 56553 365747 78844 73 3 0x1100090 kqread syslogd 78844 234590 1 0 3 0x100082 sbwait syslogd 77031 327307 1 0 3 0x100080 kqread resolvd 72927 268508 15672 77 3 0x100092 kqread dhcpleased 9407 372274 15672 77 3 0x100092 kqread dhcpleased 15672 277913 1 0 3 0x80 kqread dhcpleased 47203 389156 0 0 3 0x14200 bored smr 35925 411651 0 0 2 0x14200 zerothread 28777 69582 0 0 3 0x14200 aiodoned aiodoned 43711 163204 0 0 3 0x14200 syncer update 77859 399329 0 0 3 0x14200 cleaner cleaner 10037 510864 0 0 3 0x14200 reaper reaper 56092 80345 0 0 3 0x14200 pgdaemon pagedaemon 97832 150598 0 0 3 0x14200 bored viomb 12220 515999 0 0 3 0x40014200 acpi0 acpi0 89952 282205 0 0 3 0x14200 bored softnet3 60228 480559 0 0 3 0x14200 bored softnet2 55023 167275 0 0 3 0x14200 bored softnet1 10517 9797 0 0 3 0x14200 bored softnet0 43596 484402 0 0 3 0x14200 bored systqmp 81135 289984 0 0 3 0x14200 bored systq 9362 232953 0 0 3 0x40014200 tmoslp softclock 12417 240941 0 0 3 0x40014200 idle0 1 435479 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 11148K 11440K 166960K 12349 0 pcb 18 12K 12K 166960K 133 0 rtable 189 7K 9K 166960K 519 0 pf 39 14K 131085K 166960K 95 0 ifaddr 37 6K 7K 166960K 70 0 ifgroup 58 2K 2K 166960K 108 0 sysctl 4 1K 9K 166960K 13 0 counters 34 18K 18K 166960K 57 0 ioctlops 0 0K 4K 166960K 164 0 iov 1 1K 21K 166960K 40 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1426 90K 90K 166960K 2056 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 36 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 812 0 sigio 0 0K 0K 166960K 17 0 proc 60 59K 108K 166960K 562 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 87 0 in_multi 74 5K 7K 166960K 124 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 408 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 215 150K 169K 166960K 9226 0 UVM aobj 6 2K 2K 166960K 7 0 pinsyscall 38 76K 92K 166960K 1849 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 36 0 NDP 13 0K 1K 166960K 45 0 temp 60 8683K 8761K 166960K 44884 0 kqueue 14 22K 28K 166960K 144 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 85 0 81 1 0 1 1 0 8 0 rtentry 136 135 0 53 4 0 4 4 0 8 0 unpcb 144 368 0 353 1 0 1 1 0 8 0 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpqe 32 6 0 6 1 0 1 1 0 8 1 tcpcb 736 426 0 421 13 6 7 7 0 8 6 arp 88 21 0 6 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 1 1 0 1 1 0 8 0 inpcb 328 910 0 900 15 6 9 10 0 8 8 ip6q 72 6 0 1 1 0 1 1 0 8 0 ip6af 40 9 0 4 1 0 1 1 0 8 0 nd6 104 29 0 8 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 16 0 16 2 1 1 1 0 8 1 pppxif 1384 5 0 5 1 0 1 1 0 8 1 pfstscr 40 2 0 1 1 0 1 1 0 8 0 pfrktable 1344 4 0 4 2 1 1 1 0 8 1 pfanchor 1288 1 0 1 1 1 0 1 0 8 0 pfstitem 24 1 0 0 1 0 1 1 0 8 0 pfstkey 128 7 0 6 1 0 1 1 0 8 0 pfstate 384 5 0 4 1 0 1 1 0 8 0 pfrule 1344 6 0 6 2 1 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 533 0 190 30 0 30 30 0 8 6 art_table 32 535 0 190 4 0 4 4 0 8 0 art_node 16 129 0 56 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 9 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 33 0 23 1 0 1 1 0 8 0 shmpl 112 4 0 1 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 2881 0 1383 95 0 95 95 0 8 0 ffsino 248 2881 0 1383 95 0 95 95 0 8 0 nchpl 144 4049 0 2369 63 0 63 63 0 8 0 uvmvnodes 80 3397 0 0 70 0 70 70 0 8 0 vnodes 216 3397 0 0 189 0 189 189 0 8 0 namei 1024 13793 0 13792 2 1 1 2 0 8 0 kstatmem 264 58 0 32 3 0 3 3 0 8 1 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 13251 0 13251 10 2 8 8 1 8 8 plimitpl 152 185 0 168 1 0 1 1 0 8 0 sigapl 424 1116 0 1049 8 0 8 8 0 8 0 knotepl 120 30153 0 30106 18 8 10 10 0 8 7 kqueuepl 184 383 0 372 6 3 3 4 0 8 2 pipepl 296 243 0 215 8 5 3 8 0 8 0 fdescpl 440 1077 0 1048 5 1 4 5 0 8 0 filepl 120 6803 0 6580 14 3 11 11 0 8 2 lockfpl 104 431 0 427 2 1 1 2 0 8 0 lockfspl 48 172 0 168 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 40 0 24 1 0 1 1 0 8 0 ucredpl 104 940 0 928 1 0 1 1 0 8 0 zombiepl 144 1460 0 1460 1 0 1 1 0 8 1 processpl 1160 1116 0 1049 5 0 5 5 0 8 0 procpl 656 2290 0 2212 8 0 8 8 0 8 0 sosppl 168 4 0 4 2 1 1 1 0 8 1 sockpl 528 1393 0 1364 13 4 9 9 0 8 6 mcl64k 65536 17 0 17 2 1 1 1 0 8 1 mcl16k 16384 3 0 3 2 1 1 1 0 8 1 mcl8k 8192 13 0 13 2 1 1 1 0 8 1 mcl4k 4096 3378 0 3327 15 7 8 15 0 8 1 mcl2k 2048 1530 0 1523 9 1 8 8 0 8 6 mtagpl 96 54 0 41 1 0 1 1 0 8 0 mbufpl 256 12503 0 12362 26 2 24 26 0 8 8 bufpl 280 4067 0 121 282 0 282 282 0 8 0 anonpl 24 173403 0 170217 51 0 51 51 0 187 23 amapchunkpl 152 31529 0 31088 40 4 36 36 0 158 15 amappl16 200 3227 0 3190 24 11 13 16 0 8 8 amappl15 192 3 0 3 1 0 1 1 0 8 1 amappl14 184 102 0 92 1 0 1 1 0 8 0 amappl13 176 7 0 7 2 1 1 1 0 8 1 amappl12 168 1689 0 1660 3 1 2 3 0 8 0 amappl11 160 48 0 37 1 0 1 1 0 8 0 amappl10 152 34 0 34 1 1 0 1 0 8 0 amappl9 144 242 0 242 1 1 0 1 0 8 0 amappl8 136 52 0 50 1 0 1 1 0 8 0 amappl7 128 121 0 111 1 0 1 1 0 8 0 amappl6 120 173 0 170 1 0 1 1 0 8 0 amappl5 112 117 0 110 1 0 1 1 0 8 0 amappl4 104 308 0 291 1 0 1 1 0 8 0 amappl3 96 5891 0 5792 4 0 4 4 0 8 1 amappl2 88 623 0 567 2 0 2 2 0 8 0 amappl1 80 10793 0 10250 14 1 13 13 0 8 0 amappl 88 8431 0 8280 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 254 0 254 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 6 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1077 0 1048 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1077 0 1048 1 0 1 1 0 8 0 vmmpekpl 168 10263 0 10232 2 0 2 2 0 8 0 vmmpepl 168 72791 0 70896 97 0 97 97 0 357 9 vmsppl 360 1076 0 1048 4 1 3 4 0 8 0 rwobjpl 32 24227 0 19990 35 0 35 35 0 8 0 pdppl 4096 2160 0 2096 102 36 66 80 0 8 2 pvpl 32 479874 0 470277 121 0 121 121 0 265 36 pmappl 216 1076 0 1048 3 0 3 3 0 8 1 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 310 0 59 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sys_msgrcv(ffff80003a534a68,ffff80003a52d280,ffff80003a52d1d0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80003a534a68,ffff80003a52d280,ffff80003a52d1d0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003a52d280) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a52d280) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x98ef370dd20, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace sys_msgrcv(ffff80003a534a68,ffff80003a52d280,ffff80003a52d1d0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80003a534a68,ffff80003a52d280,ffff80003a52d1d0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003a52d280) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a52d280) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x98ef370dd20, count: -3