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(ffff80002a874a78,ffff80003ca37500,ffff80003ca37450) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002a874a78,ffff80003ca37500,ffff80003ca37450) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003ca37500) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca37500) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x483ada3a8f0, count: -3 ddb> show registers rdi 0 rsi 0x200000001208 rbp 0xffff80003ca37420 rbx 0 rdx 0xffff80000143d740 rcx 0 rax 0xa r8 0x7f7fffffc000 r9 0 r10 0x1bacbbf18b83ebb5 r11 0x761ee20e66f0adae r12 0xfffffd8067f73ca8 r13 0xdeaf4152deaf4152 r14 0xffff8000014ac500 r15 0xa rip 0xffffffff81c54a42 sys_msgrcv+0x3f2 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80003ca37380 ss 0 sys_msgrcv+0x3f2: movq 0x10(%r13),%rdi ddb> show proc PROC (syz-executor) tid=51583 pid=40751 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=84, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a874f98,0xffff80002a875c78 process=0xffff8000ffff44a0 user=0xffff80003ca32000, vmspace=0xfffffd806c75dcb8 estcpu=34, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 53331 322129 33964 0 2 0 syz-executor 53331 199966 33964 0 3 0x4000080 fsleep syz-executor 19720 512735 15521 0 2 0 syz-executor 19720 100171 15521 0 3 0x4000080 fsleep syz-executor 36208 452179 87408 0 2 0 syz-executor 36208 223371 87408 0 3 0x4000080 fsleep syz-executor 75753 488707 95570 0 2 0 syz-executor 75753 98437 95570 0 2 0x4000000 syz-executor 44002 63786 31029 0 2 0 syz-executor 44002 171739 31029 0 3 0x4000080 fsleep syz-executor 44002 132703 31029 0 2 0x4000000 syz-executor 44002 23663 31029 0 2 0x4000000 syz-executor 26423 289247 64420 0 2 0 syz-executor 26423 16647 64420 0 2 0x4000000 syz-executor 26423 305462 64420 0 2 0x4000000 syz-executor 26423 335076 64420 0 3 0x4000080 fsleep syz-executor 67211 409520 37141 0 2 0 syz-executor 67211 78640 37141 0 3 0x4000080 fsleep syz-executor 67211 8245 37141 0 2 0x4000000 syz-executor 40751 150167 37802 0 2 0 syz-executor *40751 51583 37802 0 7 0x4000000 syz-executor 40751 491668 37802 0 3 0x4000080 fsleep syz-executor 40751 481594 37802 0 2 0x4000000 syz-executor 40751 411778 37802 0 2 0x4000000 syz-executor 33964 218844 21864 0 3 0x82 nanoslp syz-executor 64420 251758 21864 0 3 0x82 nanoslp syz-executor 18394 434139 1 0 3 0x100083 ttyin getty 94611 103888 0 0 3 0x14280 nfsidl nfsio 90477 244443 0 0 3 0x14280 nfsidl nfsio 55787 8522 0 0 3 0x14280 nfsidl nfsio 53968 83168 0 0 3 0x14280 nfsidl nfsio 14165 114625 0 0 3 0x14280 nfsidl nfsio 48995 59334 0 0 3 0x14280 nfsidl nfsio 93464 57323 0 0 3 0x14280 nfsidl nfsio 396 50391 0 0 3 0x14280 nfsidl nfsio 31778 499374 0 0 3 0x14280 nfsidl nfsio 98078 71920 0 0 3 0x14280 nfsidl nfsio 31883 78556 0 0 3 0x14280 nfsidl nfsio 72727 372773 0 0 3 0x14280 nfsidl nfsio 50312 379619 0 0 3 0x14280 nfsidl nfsio 93995 290093 0 0 3 0x14280 nfsidl nfsio 62995 306982 0 0 3 0x14280 nfsidl nfsio 11146 67231 0 0 3 0x14280 nfsidl nfsio 70904 390210 0 0 3 0x14280 nfsidl nfsio 97045 110203 0 0 3 0x14280 nfsidl nfsio 30970 270669 0 0 3 0x14280 nfsidl nfsio 50782 260240 0 0 3 0x14280 nfsidl nfsio 22913 145499 0 0 3 0x14200 bored sosplice 15521 469695 21864 0 3 0x82 nanoslp syz-executor 87408 439728 21864 0 3 0x82 nanoslp syz-executor 31029 374918 21864 0 3 0x82 nanoslp syz-executor 37802 313358 21864 0 3 0x82 nanoslp syz-executor 37141 339262 21864 0 3 0x82 nanoslp syz-executor 95570 378645 21864 0 3 0x82 nanoslp syz-executor 21864 423018 52966 0 3 0x82 kqread syz-executor 52966 223347 80342 0 3 0x10008a sigsusp ksh 80342 314776 7292 0 3 0x98 kqread sshd-session 7292 511696 56731 0 3 0x92 kqread sshd-session 56731 364659 1 0 3 0x88 kqread sshd 14544 5438 6529 73 3 0x1100090 kqread syslogd 6529 146873 1 0 3 0x100082 sbwait syslogd 13197 485226 1 0 3 0x100080 kqread resolvd 5956 65584 18096 77 3 0x100092 kqread dhcpleased 35134 233976 18096 77 3 0x100092 kqread dhcpleased 18096 105067 1 0 3 0x80 kqread dhcpleased 38694 290189 0 0 3 0x14200 bored smr 52451 169299 0 0 2 0x14200 zerothread 33675 251338 0 0 3 0x14200 aiodoned aiodoned 5925 30194 0 0 3 0x14200 syncer update 21529 359811 0 0 3 0x14200 cleaner cleaner 8121 252618 0 0 3 0x14200 reaper reaper 6252 3222 0 0 3 0x14200 pgdaemon pagedaemon 41496 116334 0 0 3 0x14200 bored viomb 80939 500891 0 0 3 0x40014200 acpi0 acpi0 53592 458060 0 0 3 0x14200 bored softnet3 26690 350652 0 0 3 0x14200 bored softnet2 5012 93188 0 0 3 0x14200 bored softnet1 80726 474590 0 0 3 0x14200 bored softnet0 45458 27943 0 0 3 0x14200 bored systqmp 11281 102242 0 0 3 0x14200 bored systq 8858 223698 0 0 3 0x40014200 tmoslp softclock 13915 273310 0 0 3 0x40014200 idle0 1 55516 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 10225 11193K 11505K 166960K 13892 0 pcb 18 16K 18K 166960K 276 0 rtable 191 8K 9K 166960K 559 0 pf 34 13K 131086K 166960K 177 0 ifaddr 35 5K 8K 166960K 105 0 ifgroup 58 2K 2K 166960K 184 0 sysctl 4 1K 9K 166960K 12 0 counters 34 18K 18K 166960K 122 0 ioctlops 0 0K 4K 166960K 287 0 iov 0 0K 16K 166960K 87 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1438 90K 91K 166960K 2511 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 30 0 VM map 2 1K 1K 166960K 2 0 sem 23 16K 16K 166960K 41 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 1327 0 sigio 0 0K 0K 166960K 27 0 proc 60 59K 124K 166960K 660 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 152 0 in_multi 69 5K 7K 166960K 174 0 ether_multi 1 0K 0K 166960K 10 0 mrt 2 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 530 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 246 144K 160K 166960K 13359 0 UVM aobj 76 7K 7K 166960K 80 0 pinsyscall 39 78K 96K 166960K 2427 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 80 0 NDP 13 0K 2K 166960K 76 0 temp 70 8673K 8768K 166960K 91151 0 kqueue 14 22K 34K 166960K 259 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 120 185 0 182 1 0 1 1 0 8 0 rtentry 136 166 0 92 4 0 4 4 0 8 0 unpcb 144 712 0 693 4 0 4 4 0 8 3 syncache 336 8 0 8 2 1 1 1 0 8 1 tcpqe 32 4 0 4 2 1 1 1 0 8 1 tcpcb 736 357 0 350 8 1 7 7 0 8 6 arp 88 25 0 13 1 0 1 1 0 8 0 ipq 40 8 0 4 1 0 1 1 0 8 0 ipqe 40 8 0 4 1 0 1 1 0 8 0 inpcb 328 1189 0 1174 12 5 7 7 0 8 5 ip6q 72 4 0 3 1 0 1 1 0 8 0 ip6af 40 7 0 6 1 0 1 1 0 8 0 nd6 104 36 0 19 1 0 1 1 0 8 0 pkpcb 40 56 0 56 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1072 72 0 72 2 1 1 1 0 8 1 pppxif 1384 38 0 38 2 1 1 1 0 8 1 pftag 88 2 0 0 1 0 1 1 0 8 0 pfrule 1344 4 0 4 1 1 0 1 0 8 0 rttmr 136 3 0 3 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 745 0 419 30 3 27 29 0 8 4 art_table 40 747 0 419 5 0 5 5 0 8 0 art_node 32 166 0 100 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 11 1 0 1 1 0 8 0 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 35 0 14 1 0 1 1 0 8 0 shmpl 112 77 0 4 3 0 3 3 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 3800 0 2305 95 0 95 95 0 8 0 ffsino 248 3800 0 2305 95 0 95 95 0 8 0 nchpl 144 5702 0 4018 63 0 63 63 0 8 0 rtmask 32 3 0 3 2 1 1 1 0 8 1 uvmvnodes 80 4596 0 0 94 0 94 94 0 8 0 vnodes 216 4597 0 0 256 0 256 256 0 8 0 namei 1024 19207 0 19206 4 2 2 2 0 8 1 kstatmem 264 110 0 84 3 0 3 3 0 8 0 scsiplug 72 8 0 8 2 1 1 1 0 8 1 scxspl 216 26262 0 26262 10 2 8 8 1 8 8 plimitpl 152 461 0 445 1 0 1 1 0 8 0 sigapl 424 1623 0 1556 8 0 8 8 0 8 0 knotepl 120 602819 0 602768 21 10 11 13 0 8 8 kqueuepl 184 520 0 510 5 1 4 4 0 8 3 pipepl 296 246 0 219 3 0 3 3 0 8 0 fdescpl 440 1580 0 1550 5 1 4 5 0 8 0 filepl 120 9263 0 9047 13 2 11 11 0 8 2 lockfpl 104 917 0 914 2 0 2 2 0 8 1 lockfspl 48 311 0 308 1 0 1 1 0 8 0 sessionpl 144 29 0 21 1 0 1 1 0 8 0 pgrppl 48 63 0 47 1 0 1 1 0 8 0 ucredpl 104 1450 0 1439 1 0 1 1 0 8 0 zombiepl 144 2029 0 2029 2 1 1 1 0 8 1 processpl 1160 1623 0 1556 5 0 5 5 0 8 0 procpl 656 3548 0 3465 8 0 8 8 0 8 0 sosppl 168 13 0 13 2 1 1 1 0 8 1 sockpl 528 2334 0 2297 11 4 7 8 0 8 3 mcl64k 65536 126 0 126 2 1 1 1 0 8 1 mcl16k 16384 4 0 4 2 1 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 18 0 18 2 1 1 1 0 8 1 mcl4k 4096 4062 0 4012 15 7 8 14 0 8 1 mcl2k2 2112 3 0 3 2 1 1 1 0 8 1 mcl2k 2048 1856 0 1840 5 1 4 4 0 8 1 mtagpl 96 147 0 106 3 0 3 3 0 8 1 mbufpl 256 18440 0 18261 79 60 19 77 0 8 1 bufpl 280 9412 0 3185 446 0 446 446 0 8 0 anonpl 24 244126 0 231702 123 10 113 113 0 187 7 amapchunkpl 152 45195 0 44555 46 13 33 38 0 158 6 amappl16 200 4958 0 4470 46 0 46 46 0 8 6 amappl15 192 4 0 3 1 0 1 1 0 8 0 amappl14 184 117 0 107 1 0 1 1 0 8 0 amappl13 176 6 0 6 2 1 1 1 0 8 1 amappl12 168 2243 0 2213 3 1 2 3 0 8 0 amappl11 160 45 0 34 1 0 1 1 0 8 0 amappl10 152 15 0 15 1 1 0 1 0 8 0 amappl9 144 252 0 252 1 1 0 1 0 8 0 amappl8 136 19 0 17 1 0 1 1 0 8 0 amappl7 128 115 0 104 1 0 1 1 0 8 0 amappl6 120 211 0 208 1 0 1 1 0 8 0 amappl5 112 116 0 110 1 0 1 1 0 8 0 amappl4 104 306 0 291 1 0 1 1 0 8 0 amappl3 96 9173 0 9056 4 0 4 4 0 8 0 amappl2 88 684 0 627 2 0 2 2 0 8 0 amappl1 80 13949 0 13399 14 0 14 14 0 8 1 amappl 88 12417 0 12234 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 2 1 1 1 0 8 1 dma128 128 254 0 254 2 1 1 1 0 8 1 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 79 0 4 2 0 2 2 0 8 0 uaddrrnd 24 1580 0 1550 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1580 0 1550 1 0 1 1 0 8 0 vmmpekpl 168 13936 0 13886 3 0 3 3 0 8 0 vmmpepl 168 106067 0 103657 132 2 130 130 0 357 11 vmsppl 360 1579 0 1550 4 1 3 4 0 8 0 rwobjpl 32 33260 0 27255 49 0 49 49 0 8 0 pdppl 4096 3166 0 3100 104 38 66 82 0 8 0 pvpl 32 681163 0 663373 231 20 211 211 0 265 21 pmappl 216 1579 0 1550 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 357 0 118 9 1 8 9 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sys_msgrcv(ffff80002a874a78,ffff80003ca37500,ffff80003ca37450) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002a874a78,ffff80003ca37500,ffff80003ca37450) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003ca37500) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca37500) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x483ada3a8f0, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace sys_msgrcv(ffff80002a874a78,ffff80003ca37500,ffff80003ca37450) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002a874a78,ffff80003ca37500,ffff80003ca37450) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003ca37500) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca37500) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x483ada3a8f0, count: -3