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(ffff80002a7f02b0,ffff80002f100f50,ffff80002f100ea0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002a7f02b0,ffff80002f100f50,ffff80002f100ea0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80002f100f50) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002f100f50) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2b9d4caf340, count: -3 ddb> show registers rdi 0 rsi 0x200000001208 rbp 0xffff80002f100e70 rbx 0 rdx 0xffff800001469300 rcx 0 rax 0xa r8 0x7f7fffffc000 r9 0 r10 0xe01b091236ea5945 r11 0x580e8e65a6a7a713 r12 0xfffffd806f706f30 r13 0xdead4110dead4110 r14 0xffff80000151ce00 r15 0xa rip 0xffffffff81b48e72 sys_msgrcv+0x3f2 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002f100dd0 ss 0x10 sys_msgrcv+0x3f2: movq 0x10(%r13),%rdi ddb> show proc PROC (syz-executor) tid=125648 pid=44792 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=82, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c93c7d8,0xffff80002a7cfc78 process=0xffff80002a7b71f8 user=0xffff80002f0fc000, vmspace=0xfffffd806c2a92e0 estcpu=32, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 94361 80530 99667 0 2 0 syz-executor 94361 249447 99667 0 3 0x4000080 fsleep syz-executor 23184 217525 74000 0 2 0 syz-executor 23184 150944 74000 0 3 0x4000080 fsleep syz-executor 41382 456695 49785 0 2 0x10 syz-executor 41382 302904 49785 0 3 0x4000090 fsleep syz-executor 92969 337378 8880 0 2 0 syz-executor 92969 103793 8880 0 3 0x4000080 fsleep syz-executor 85808 29497 8357 0 2 0 syz-executor 85808 423595 8357 0 3 0x4000080 piperd syz-executor 11186 231359 33508 0 3 0x80 nanoslp syz-executor 11186 451243 33508 0 3 0x4000080 netcon syz-executor 11186 514241 33508 0 3 0x4000080 fsleep syz-executor 77921 72637 7370 0 2 0 syz-executor 77921 29387 7370 0 3 0x4000080 kqsel syz-executor 77921 494777 7370 0 3 0x4000080 fsleep syz-executor 44792 229828 51607 0 2 0 syz-executor *44792 125648 51607 0 7 0x4000000 syz-executor 44792 197350 51607 0 3 0x4000080 fsleep syz-executor 44792 445915 51607 0 2 0x4000000 syz-executor 44792 326618 51607 0 2 0x4000000 syz-executor 8357 241745 71355 0 3 0x82 nanoslp syz-executor 28614 51714 1 0 3 0x100083 ttyin getty 71446 511840 0 0 3 0x14280 nfsidl nfsio 28689 196845 0 0 3 0x14280 nfsidl nfsio 30484 450941 0 0 3 0x14280 nfsidl nfsio 46593 439923 0 0 3 0x14280 nfsidl nfsio 10874 359740 0 0 3 0x14280 nfsidl nfsio 62896 44316 0 0 3 0x14280 nfsidl nfsio 96769 209002 0 0 3 0x14280 nfsidl nfsio 51262 286352 0 0 3 0x14280 nfsidl nfsio 36958 365170 0 0 3 0x14280 nfsidl nfsio 45606 49106 0 0 3 0x14280 nfsidl nfsio 52450 508983 0 0 3 0x14280 nfsidl nfsio 37881 123962 0 0 3 0x14280 nfsidl nfsio 47127 173001 0 0 3 0x14280 nfsidl nfsio 99521 332858 0 0 3 0x14280 nfsidl nfsio 83347 235269 0 0 3 0x14280 nfsidl nfsio 169 86338 0 0 3 0x14280 nfsidl nfsio 77119 424406 0 0 3 0x14280 nfsidl nfsio 43496 81626 0 0 3 0x14280 nfsidl nfsio 89349 226645 0 0 3 0x14280 nfsidl nfsio 30766 399970 0 0 3 0x14280 nfsidl nfsio 33508 191659 71355 0 3 0x82 nanoslp syz-executor 99667 63528 71355 0 3 0x82 nanoslp syz-executor 51586 388895 0 0 3 0x14200 bored sosplice 7370 220969 71355 0 3 0x82 nanoslp syz-executor 74000 417335 71355 0 3 0x82 nanoslp syz-executor 51607 166126 71355 0 3 0x82 nanoslp syz-executor 49785 453915 71355 0 3 0x82 nanoslp syz-executor 8880 337267 71355 0 3 0x82 nanoslp syz-executor 71355 78151 90249 0 3 0x82 kqread syz-executor 90249 394189 94644 0 3 0x10008a sigsusp ksh 94644 304507 36602 0 3 0x98 kqread sshd-session 36602 40554 22729 0 3 0x92 kqread sshd-session 22729 11691 1 0 3 0x88 kqread sshd 81519 196943 13043 73 3 0x1100090 kqread syslogd 13043 433447 1 0 3 0x100082 sbwait syslogd 14488 181923 1 0 3 0x100080 kqread resolvd 62144 21431 8037 77 3 0x100092 kqread dhcpleased 20596 401173 8037 77 3 0x100092 kqread dhcpleased 8037 243771 1 0 3 0x80 kqread dhcpleased 38774 429688 0 0 3 0x14200 bored smr 93507 440282 0 0 2 0x14200 zerothread 98132 436473 0 0 3 0x14200 aiodoned aiodoned 43972 504565 0 0 3 0x14200 syncer update 21818 110495 0 0 3 0x14200 cleaner cleaner 93792 374951 0 0 3 0x14200 reaper reaper 97715 186347 0 0 3 0x14200 pgdaemon pagedaemon 94579 99881 0 0 3 0x14200 bored viomb 12821 411406 0 0 3 0x40014200 acpi0 acpi0 12928 474214 0 0 3 0x14200 bored softnet3 43022 241991 0 0 3 0x14200 bored softnet2 46586 62075 0 0 3 0x14200 bored softnet1 67879 513116 0 0 3 0x14200 bored softnet0 84113 53662 0 0 3 0x14200 bored systqmp 23856 232957 0 0 3 0x14200 bored systq 32895 506980 0 0 3 0x40014200 tmoslp softclock 17083 112726 0 0 3 0x40014200 idle0 1 403123 0 0 3 0x80082 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 10187 11046K 12293K 166960K 13235 0 pcb 17 13K 14K 166960K 216 0 rtable 214 9K 10K 166960K 577 0 pf 36 14K 21K 166960K 146 0 ifaddr 38 6K 7K 166960K 100 0 ifgroup 50 2K 2K 166960K 158 0 sysctl 3 1K 9K 166960K 10 0 counters 32 17K 18K 166960K 76 0 ioctlops 0 0K 4K 166960K 214 0 iov 1 1K 16K 166960K 42 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1493 94K 94K 166960K 2574 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 19 0 VM map 2 1K 1K 166960K 2 0 sem 23 6K 6K 166960K 37 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 236K 166960K 1091 0 sigio 0 0K 0K 166960K 13 0 proc 63 67K 124K 166960K 672 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 129 0 in_multi 80 6K 7K 166960K 185 0 ether_multi 1 0K 0K 166960K 11 0 mrt 3 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 2K 166960K 633 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 239 152K 167K 166960K 10894 0 UVM aobj 131 6K 6K 166960K 134 0 pinsyscall 39 78K 96K 166960K 2162 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 1K 166960K 67 0 NDP 11 0K 2K 166960K 66 0 temp 60 8683K 8753K 166960K 38864 0 kqueue 13 20K 30K 166960K 182 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 120 106 0 103 1 0 1 1 0 8 0 rtentry 136 185 0 93 4 0 4 4 0 8 0 unpcb 144 636 0 621 6 5 1 6 0 8 0 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 565 0 559 10 7 3 10 0 8 1 arp 88 33 0 13 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 1346 0 1331 13 9 4 13 0 8 0 ip6q 72 6 0 2 1 0 1 1 0 8 0 ip6af 40 10 0 4 1 0 1 1 0 8 0 nd6 104 42 0 18 1 0 1 1 0 8 0 pkpcb 40 13 0 13 2 1 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1072 28 0 28 2 1 1 1 0 8 1 pppxif 1384 5 0 5 1 1 0 1 0 8 0 pfstscr 40 3 0 3 1 1 0 1 0 8 0 pfrktable 1344 4 0 3 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 1 1 0 1 1 0 8 0 pfqueue 320 2 0 1 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 8 0 6 1 0 1 1 0 8 0 pfstate 384 4 0 3 1 0 1 1 0 8 0 pfrule 1344 7 0 6 1 0 1 1 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 884 0 418 34 4 30 30 0 8 0 art_table 32 886 0 418 4 0 4 4 0 8 0 art_node 16 184 0 108 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 8 2 1 1 1 0 8 1 semapl 112 31 0 10 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 3360 0 1862 95 0 95 95 0 8 0 ffsino 248 3360 0 1862 95 0 95 95 0 8 0 nchpl 144 4859 0 3170 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 uvmvnodes 80 4207 0 0 86 0 86 86 0 8 0 vnodes 216 4207 0 0 234 0 234 234 0 8 0 namei 1024 17831 0 17831 3 2 1 2 0 8 1 kstatmem 264 86 0 64 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 7 0 7 1 1 0 1 0 8 0 scxspl 216 14103 0 14103 8 7 1 8 1 8 1 plimitpl 152 301 0 284 1 0 1 1 0 8 0 sigapl 424 1367 0 1300 8 0 8 8 0 8 0 knotepl 120 38191 0 38143 17 7 10 10 0 8 8 kqueuepl 184 308 0 296 1 0 1 1 0 8 0 pipepl 296 306 0 278 8 5 3 8 0 8 0 fdescpl 440 1328 0 1298 5 1 4 5 0 8 0 filepl 120 9155 0 8942 14 4 10 14 0 8 1 lockfpl 104 471 0 469 2 1 1 2 0 8 0 lockfspl 48 213 0 211 1 0 1 1 0 8 0 sessionpl 144 25 0 17 1 0 1 1 0 8 0 pgrppl 48 50 0 34 1 0 1 1 0 8 0 ucredpl 104 1735 0 1722 1 0 1 1 0 8 0 zombiepl 144 1361 0 1361 1 0 1 1 0 8 1 processpl 1160 1367 0 1300 5 0 5 5 0 8 0 procpl 656 2716 0 2636 8 0 8 8 0 8 0 sosppl 168 9 0 9 1 1 0 1 0 8 0 sockpl 528 2161 0 2128 19 14 5 18 0 8 0 mcl64k 65536 24 0 24 2 1 1 1 0 8 1 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl9k 9216 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 79 0 79 1 1 0 1 0 8 0 mcl4k 4096 3639 0 3585 13 5 8 13 0 8 0 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 1077 0 1063 4 1 3 3 0 8 1 mtagpl 96 40 0 12 1 0 1 1 0 8 0 mbufpl 256 13585 0 13378 16 0 16 16 0 8 2 bufpl 280 3993 0 128 277 0 277 277 0 8 0 anonpl 24 182436 0 179154 57 24 33 57 0 187 7 amapchunkpl 152 35313 0 34800 28 2 26 28 0 158 5 amappl16 200 3062 0 3029 23 20 3 15 0 8 0 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 146 0 136 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1994 0 1964 3 1 2 3 0 8 0 amappl11 160 40 0 30 1 0 1 1 0 8 0 amappl10 152 7 0 6 1 0 1 1 0 8 0 amappl9 144 246 0 246 1 1 0 1 0 8 0 amappl8 136 35 0 34 1 0 1 1 0 8 0 amappl7 128 154 0 142 1 0 1 1 0 8 0 amappl6 120 212 0 208 1 0 1 1 0 8 0 amappl5 112 177 0 170 1 0 1 1 0 8 0 amappl4 104 290 0 273 1 0 1 1 0 8 0 amappl3 96 7212 0 7095 4 0 4 4 0 8 0 amappl2 88 644 0 588 2 0 2 2 0 8 0 amappl1 80 11694 0 11146 14 2 12 14 0 8 0 amappl 88 10040 0 9865 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 1 1 0 1 0 8 0 dma128 128 258 0 258 1 1 0 1 0 8 0 dma64 64 7 0 7 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 1328 0 1298 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1328 0 1298 1 0 1 1 0 8 0 vmmpekpl 168 11193 0 11142 3 0 3 3 0 8 0 vmmpepl 168 85228 0 83296 94 9 85 94 0 357 0 vmsppl 360 1327 0 1298 4 1 3 4 0 8 0 rwobjpl 32 26702 0 21503 42 0 42 42 0 8 0 pdppl 4096 2662 0 2596 110 44 66 82 0 8 0 pvpl 32 553384 0 544393 133 30 103 131 0 265 18 pmappl 216 1327 0 1298 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 299 0 70 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sys_msgrcv(ffff80002a7f02b0,ffff80002f100f50,ffff80002f100ea0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002a7f02b0,ffff80002f100f50,ffff80002f100ea0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80002f100f50) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002f100f50) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2b9d4caf340, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace sys_msgrcv(ffff80002a7f02b0,ffff80002f100f50,ffff80002f100ea0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002a7f02b0,ffff80002f100f50,ffff80002f100ea0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80002f100f50) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002f100f50) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2b9d4caf340, count: -3