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(ffff80002a7f0540,ffff80003c95fe40,ffff80003c95fd90) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002a7f0540,ffff80003c95fe40,ffff80003c95fd90) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c95fe40) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95fe40) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75864e902b0, count: -3 ddb> show registers rdi 0 rsi 0x200000001208 rbp 0xffff80003c95fd60 rbx 0 rdx 0xffff80000146ba80 rcx 0 rax 0xa r8 0x7f7fffffc000 r9 0 r10 0x8c5dd079d93cfcda r11 0x216ff142cf941ad r12 0xfffffd8075d5de10 r13 0xdeafbeaddeafbead r14 0xffff800000b50400 r15 0xa rip 0xffffffff812cd9f2 sys_msgrcv+0x3f2 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80003c95fcc0 ss 0 sys_msgrcv+0x3f2: movq 0x10(%r13),%rdi ddb> show proc PROC (syz-executor) tid=82576 pid=10315 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=74, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7f07d0,0xffff80002a7f14b0 process=0xffff80003c96f1f8 user=0xffff80003c95a000, vmspace=0xfffffd8075e3e018 estcpu=24, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 85617 347076 46046 0 2 0 syz-executor 85617 389270 46046 0 3 0x4000080 fsleep syz-executor 85617 396570 46046 0 3 0x4000080 fsleep syz-executor 76582 472722 29994 0 3 0 vmmaplk syz-executor 76582 470558 29994 0 3 0x4000080 fsleep syz-executor 76582 352604 29994 0 2 0x4000000 syz-executor 66851 506671 30726 0 2 0 syz-executor 66851 40065 30726 0 3 0x4000080 fsleep syz-executor 10315 383958 17977 0 2 0 syz-executor *10315 82576 17977 0 7 0x4000000 syz-executor 10315 274604 17977 0 3 0x4000080 fsleep syz-executor 10315 11822 17977 0 2 0x4000000 syz-executor 10315 440045 17977 0 2 0x4000000 syz-executor 84098 58243 15131 0 2 0 syz-executor 84098 323824 15131 0 3 0x4000080 fifor syz-executor 84098 406326 15131 0 3 0x4000080 fifor syz-executor 84098 299342 15131 0 3 0x4000080 fsleep syz-executor 84098 60076 15131 0 3 0x4000080 fsleep syz-executor 92726 427418 0 0 3 0x14200 bored sosplice 20104 45862 0 0 3 0x14280 nfsidl nfsio 38405 270565 0 0 3 0x14280 nfsidl nfsio 21145 439829 0 0 3 0x14280 nfsidl nfsio 85911 367825 0 0 3 0x14280 nfsidl nfsio 92639 294616 0 0 3 0x14280 nfsidl nfsio 21552 145951 0 0 3 0x14280 nfsidl nfsio 4765 250241 0 0 3 0x14280 nfsidl nfsio 7599 191709 0 0 3 0x14280 nfsidl nfsio 56892 486468 0 0 3 0x14280 nfsidl nfsio 77085 493808 0 0 3 0x14280 nfsidl nfsio 68003 145310 0 0 3 0x14280 nfsidl nfsio 97550 140804 0 0 3 0x14280 nfsidl nfsio 46407 416600 0 0 3 0x14280 nfsidl nfsio 65054 498384 0 0 3 0x14280 nfsidl nfsio 97692 185424 0 0 3 0x14280 nfsidl nfsio 51 319597 0 0 3 0x14280 nfsidl nfsio 77157 239892 0 0 3 0x14280 nfsidl nfsio 63461 211153 0 0 3 0x14280 nfsidl nfsio 55969 146553 0 0 3 0x14280 nfsidl nfsio 56360 406091 0 0 3 0x14280 nfsidl nfsio 98902 97009 0 0 3 0x14200 acct acct 3436 39855 74924 0 3 0x82 wait syz-executor 46046 107844 74924 0 3 0x82 nanoslp syz-executor 17977 448654 74924 0 3 0x82 nanoslp syz-executor 15131 315716 74924 0 3 0x82 nanoslp syz-executor 30726 463222 74924 0 3 0x82 nanoslp syz-executor 58452 198277 74924 0 3 0x82 wait syz-executor 61534 382950 74924 0 3 0x82 wait syz-executor 29994 479477 74924 0 3 0x82 nanoslp syz-executor 74924 282005 11656 0 3 0x82 kqread syz-executor 11656 141589 74301 0 3 0x10008a sigsusp ksh 74301 247639 57716 0 3 0x98 kqread sshd-session 57716 308929 31393 0 3 0x92 kqread sshd-session 35735 3261 1 0 3 0x100083 ttyin getty 31393 302058 1 0 3 0x88 kqread sshd 26255 148930 12669 73 3 0x1100090 kqread syslogd 12669 518180 1 0 3 0x100082 sbwait syslogd 61044 492685 1 0 3 0x100080 kqread resolvd 13678 486081 95944 77 3 0x100092 kqread dhcpleased 27088 124845 95944 77 3 0x100092 kqread dhcpleased 95944 162300 1 0 3 0x80 kqread dhcpleased 2111 172499 0 0 3 0x14200 bored smr 73038 66194 0 0 2 0x14200 zerothread 57786 502656 0 0 3 0x14200 aiodoned aiodoned 26594 370488 0 0 3 0x14200 syncer update 85869 477642 0 0 3 0x14200 cleaner cleaner 92402 198979 0 0 3 0x14200 reaper reaper 75647 303721 0 0 3 0x14200 pgdaemon pagedaemon 35456 190622 0 0 3 0x14200 bored viomb 62724 413548 0 0 3 0x40014200 acpi0 acpi0 2737 216324 0 0 3 0x14200 bored softnet3 32649 312591 0 0 3 0x14200 bored softnet2 70406 241921 0 0 3 0x14200 bored softnet1 95207 227671 0 0 3 0x14200 bored softnet0 22861 254582 0 0 3 0x14200 bored systqmp 53562 332209 0 0 3 0x14200 bored systq 31078 236902 0 0 3 0x40014200 tmoslp softclock 65765 49049 0 0 3 0x40014200 idle0 1 412133 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10189 11118K 11694K 166960K 11963 0 pcb 17 14K 16K 166960K 169 0 rtable 200 8K 8K 166960K 415 0 pf 33 13K 15K 166960K 73 0 ifaddr 40 6K 7K 166960K 73 0 ifgroup 54 2K 2K 166960K 112 0 sysctl 3 1K 9K 166960K 12 0 counters 33 17K 18K 166960K 60 0 ioctlops 0 0K 4K 166960K 65 0 iov 0 0K 17K 166960K 23 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1403 88K 89K 166960K 1691 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 16 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 447 0 sigio 0 0K 0K 166960K 2 0 proc 60 59K 108K 166960K 493 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 117 0 in_multi 88 6K 7K 166960K 132 0 ether_multi 1 0K 0K 166960K 7 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 376 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 244 152K 165K 166960K 5456 0 UVM aobj 44 2K 4K 166960K 49 0 pinsyscall 39 78K 95K 166960K 1464 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 49 0 NDP 12 0K 2K 166960K 45 0 temp 52 8681K 8792K 166960K 12525 0 kqueue 15 24K 32K 166960K 91 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 120 117 0 113 3 0 3 3 0 8 2 rtentry 136 126 0 38 4 0 4 4 0 8 0 unpcb 144 270 0 251 1 0 1 1 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 207 0 202 10 6 4 7 0 8 3 arp 88 20 0 3 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 0 1 0 1 1 0 8 0 inpcb 328 490 0 481 13 9 4 10 0 8 3 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 104 26 0 5 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 18 0 18 2 1 1 1 0 8 1 pppxif 1384 6 0 6 2 1 1 1 0 8 1 pfrule 1344 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 550 0 176 30 3 27 29 0 8 1 art_table 32 552 0 176 4 0 4 4 0 8 0 art_node 16 123 0 44 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 3 1 0 1 1 0 8 0 semapl 112 12 0 4 1 0 1 1 0 8 0 shmpl 112 46 0 5 2 0 2 2 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2116 0 619 95 0 95 95 0 8 0 ffsino 248 2116 0 619 95 0 95 95 0 8 0 nchpl 144 2754 0 1070 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 uvmvnodes 80 2438 0 0 50 0 50 50 0 8 0 vnodes 216 2438 0 0 136 0 136 136 0 8 0 namei 1024 8767 0 8767 4 2 2 2 0 8 2 kstatmem 264 58 0 34 4 1 3 3 0 8 1 scxspl 216 8390 0 8390 2 1 1 2 1 8 1 plimitpl 152 72 0 56 1 0 1 1 0 8 0 sigapl 424 744 0 676 8 0 8 8 0 8 0 knotepl 120 17595 0 17544 35 25 10 17 0 8 8 kqueuepl 184 197 0 184 4 3 1 4 0 8 0 pipepl 296 119 0 92 3 0 3 3 0 8 0 fdescpl 440 706 0 676 5 1 4 5 0 8 0 filepl 120 3659 0 3435 15 5 10 14 0 8 1 lockfpl 104 200 0 196 1 0 1 1 0 8 0 lockfspl 48 93 0 89 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 35 0 19 1 0 1 1 0 8 0 ucredpl 104 442 0 431 1 0 1 1 0 8 0 zombiepl 144 703 0 700 1 0 1 1 0 8 0 processpl 1160 744 0 676 5 0 5 5 0 8 0 procpl 656 1227 0 1146 7 0 7 7 0 8 0 sockpl 528 894 0 862 16 7 9 10 0 8 6 mcl64k 65536 9 0 8 1 0 1 1 0 8 0 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 8 0 8 1 1 0 1 0 8 0 mcl4k 4096 2851 0 2801 14 7 7 14 0 8 0 mcl2k2 2112 3 0 3 1 1 0 1 0 8 0 mcl2k 2048 511 0 508 1 0 1 1 0 8 0 mtagpl 96 20 0 6 1 0 1 1 0 8 0 mbufpl 256 8252 0 8079 69 49 20 68 0 8 8 bufpl 280 3797 0 119 263 0 263 263 0 8 0 anonpl 24 112252 0 108956 59 21 38 44 0 187 13 amapchunkpl 152 17202 0 16670 33 6 27 27 0 158 5 amappl16 200 1575 0 1543 14 12 2 14 0 8 0 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 105 0 95 1 0 1 1 0 8 0 amappl13 176 28 0 28 1 1 0 1 0 8 0 amappl12 168 1334 0 1304 3 1 2 3 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 12 0 12 1 1 0 1 0 8 0 amappl9 144 263 0 263 1 1 0 1 0 8 0 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 91 0 81 1 0 1 1 0 8 0 amappl6 120 163 0 160 1 0 1 1 0 8 0 amappl5 112 110 0 103 1 0 1 1 0 8 0 amappl4 104 283 0 267 1 0 1 1 0 8 0 amappl3 96 3220 0 3103 3 0 3 3 0 8 0 amappl2 88 603 0 549 2 0 2 2 0 8 0 amappl1 80 9301 0 8751 13 0 13 13 0 8 0 amappl 88 4773 0 4593 6 1 5 5 0 92 1 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 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 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 48 0 5 1 0 1 1 0 8 0 uaddrrnd 24 706 0 676 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 706 0 676 1 0 1 1 0 8 0 vmmpekpl 168 7130 0 7100 2 0 2 2 0 8 0 vmmpepl 168 49379 0 47455 92 7 85 92 0 357 0 vmsppl 360 705 0 676 4 1 3 4 0 8 0 rwobjpl 32 17140 0 13794 27 0 27 27 0 8 0 pdppl 4096 1418 0 1352 100 34 66 82 0 8 0 pvpl 32 314646 0 305674 150 31 119 119 0 265 28 pmappl 216 705 0 676 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 335 0 106 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sys_msgrcv(ffff80002a7f0540,ffff80003c95fe40,ffff80003c95fd90) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002a7f0540,ffff80003c95fe40,ffff80003c95fd90) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c95fe40) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95fe40) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75864e902b0, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace sys_msgrcv(ffff80002a7f0540,ffff80003c95fe40,ffff80003c95fd90) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002a7f0540,ffff80003c95fe40,ffff80003c95fd90) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c95fe40) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95fe40) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75864e902b0, count: -3