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(ffff800035d16cf8,ffff80002a7e1cd0,ffff80002a7e1c20) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff800035d16cf8,ffff80002a7e1cd0,ffff80002a7e1c20) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80002a7e1cd0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a7e1cd0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1bcc545bf30, count: -3 ddb> show registers rdi 0 rsi 0x200000001208 rbp 0xffff80002a7e1bf0 rbx 0 rdx 0xffff800001469840 rcx 0 rax 0xa r8 0x7f7fffffc000 r9 0 r10 0x725f24e7d668a76a r11 0x79e6d1ff594b87d0 r12 0xfffffd806a30ee90 r13 0xdead4110dead4110 r14 0xffff8000014f7200 r15 0xa rip 0xffffffff810daab2 sys_msgrcv+0x3f2 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a7e1b50 ss 0x10 sys_msgrcv+0x3f2: movq 0x10(%r13),%rdi ddb> show proc PROC (syz-executor) tid=376324 pid=32557 tcnt=4 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=0xffff800035d162b8,0xffff800035d17c68 process=0xffff800035d188e8 user=0xffff80002a7dc000, vmspace=0xfffffd806c2385b0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 89705 136613 8088 0 2 0 syz-executor 89705 196680 8088 0 3 0x4000080 fsleep syz-executor 84963 121345 36844 0 2 0 syz-executor 84963 296384 36844 0 3 0x4000080 fsleep syz-executor 84963 361559 36844 0 3 0x4000080 fsleep syz-executor 10941 96004 18005 0 2 0x10 syz-executor 10941 182723 18005 0 3 0x4000090 fsleep syz-executor 10941 419983 18005 0 3 0x4000090 fsleep syz-executor 40202 99324 99746 0 2 0 syz-executor 40202 122117 99746 0 3 0x4000080 fsleep syz-executor 40202 233005 99746 0 3 0x4000080 fsleep syz-executor 46612 390880 11142 0 2 0 syz-executor 46612 519914 11142 0 3 0x4000080 sbwait syz-executor 46612 180092 11142 0 2 0x4000000 syz-executor 46612 373500 11142 0 2 0x4000000 syz-executor 32699 109838 21512 0 2 0 syz-executor 32699 241614 21512 0 3 0x4000080 fsleep syz-executor 32557 29606 22865 0 2 0 syz-executor *32557 376324 22865 0 7 0x4000000 syz-executor 32557 234931 22865 0 3 0x4000080 fsleep syz-executor 32557 227429 22865 0 2 0x4000000 syz-executor 45104 303361 0 0 3 0x14280 nfsidl nfsio 99237 317443 0 0 3 0x14280 nfsidl nfsio 49034 305840 0 0 3 0x14280 nfsidl nfsio 13697 82556 0 0 3 0x14280 nfsidl nfsio 65856 210227 0 0 3 0x14280 nfsidl nfsio 88749 308698 0 0 3 0x14280 nfsidl nfsio 57751 264617 0 0 3 0x14280 nfsidl nfsio 76901 121318 0 0 3 0x14280 nfsidl nfsio 70073 117226 0 0 3 0x14280 nfsidl nfsio 6 102323 0 0 3 0x14280 nfsidl nfsio 32441 226817 0 0 3 0x14280 nfsidl nfsio 93111 246656 0 0 3 0x14280 nfsidl nfsio 72555 434813 0 0 3 0x14280 nfsidl nfsio 48811 233100 0 0 3 0x14280 nfsidl nfsio 33603 153712 0 0 3 0x14280 nfsidl nfsio 1854 105293 0 0 3 0x14280 nfsidl nfsio 97742 70008 0 0 3 0x14280 nfsidl nfsio 69853 108096 0 0 3 0x14280 nfsidl nfsio 47268 70589 0 0 3 0x14280 nfsidl nfsio 39379 27477 0 0 3 0x14280 nfsidl nfsio 9832 31533 0 0 3 0x14200 acct acct 21512 337790 50347 0 3 0x82 nanoslp syz-executor 87474 267139 1 0 3 0x100083 ttyin getty 40556 233894 0 0 3 0x14200 bored sosplice 99746 345511 50347 0 3 0x82 nanoslp syz-executor 18005 197270 50347 0 3 0x82 nanoslp syz-executor 22865 402685 50347 0 3 0x82 nanoslp syz-executor 11142 223364 50347 0 3 0x82 nanoslp syz-executor 36844 7031 50347 0 3 0x82 nanoslp syz-executor 50480 269935 50347 0 3 0x82 nanoslp syz-executor 8088 307853 50347 0 3 0x82 nanoslp syz-executor 50347 494195 78035 0 3 0x82 kqread syz-executor 78035 37088 80536 0 3 0x10008a sigsusp ksh 80536 165554 76137 0 3 0x98 kqread sshd-session 76137 403338 49624 0 3 0x92 kqread sshd-session 49624 110245 1 0 3 0x88 kqread sshd 66790 321430 42785 73 3 0x1100090 kqread syslogd 42785 430730 1 0 3 0x100082 sbwait syslogd 1105 464167 1 0 3 0x100080 kqread resolvd 12372 373573 6403 77 3 0x100092 kqread dhcpleased 55983 89101 6403 77 3 0x100092 kqread dhcpleased 6403 278782 1 0 3 0x80 kqread dhcpleased 56427 197335 0 0 3 0x14200 bored smr 13128 469353 0 0 2 0x14200 zerothread 66669 277834 0 0 3 0x14200 aiodoned aiodoned 16463 447774 0 0 3 0x14200 syncer update 91369 157515 0 0 3 0x14200 cleaner cleaner 95131 101621 0 0 3 0x14200 reaper reaper 19300 347264 0 0 3 0x14200 pgdaemon pagedaemon 67289 480564 0 0 3 0x14200 bored viomb 49318 489641 0 0 3 0x40014200 acpi0 acpi0 4110 83716 0 0 3 0x14200 bored softnet3 78587 323495 0 0 3 0x14200 bored softnet2 16382 127824 0 0 3 0x14200 bored softnet1 66038 337508 0 0 3 0x14200 bored softnet0 88146 390892 0 0 3 0x14200 bored systqmp 95839 65258 0 0 3 0x14200 bored systq 34855 69957 0 0 3 0x40014200 tmoslp softclock 39005 122419 0 0 3 0x40014200 idle0 1 249565 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 10217 11180K 11493K 166960K 13143 0 pcb 18 14K 14K 166960K 176 0 rtable 226 8K 9K 166960K 459 0 pf 29 12K 20K 166960K 84 0 ifaddr 39 7K 7K 166960K 72 0 ifgroup 46 2K 2K 166960K 117 0 sysctl 4 1K 9K 166960K 9 0 counters 31 17K 18K 166960K 62 0 ioctlops 0 0K 4K 166960K 121 0 iov 1 4K 28K 166960K 50 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1431 90K 90K 166960K 2263 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 22 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 29 0 dirhash 12 2K 3K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 992 0 sigio 0 0K 0K 166960K 147 0 proc 60 59K 124K 166960K 622 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 144 0 in_multi 88 6K 7K 166960K 155 0 ether_multi 1 0K 0K 166960K 11 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 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 506 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 237 151K 169K 166960K 10584 0 UVM aobj 26 4K 5K 166960K 30 0 pinsyscall 39 78K 96K 166960K 2078 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 48 0 NDP 10 0K 2K 166960K 49 0 temp 65 8677K 8931K 166960K 22799 0 kqueue 14 22K 28K 166960K 162 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 120 127 0 124 2 1 1 2 0 8 0 rtentry 136 137 0 37 4 0 4 4 0 8 0 unpcb 144 1402 0 1384 13 7 6 8 0 8 5 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 306 0 300 8 3 5 5 0 8 4 arp 88 22 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 344 1075 0 1060 16 8 8 10 0 8 5 ip6q 72 1 0 0 1 0 1 1 0 8 0 nd6 104 30 0 8 1 0 1 1 0 8 0 pkpcb 40 7 0 7 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1072 20 0 20 2 1 1 1 0 8 1 pppxif 1384 2 0 2 1 1 0 1 0 8 0 pfrule 1344 3 0 3 2 1 1 1 0 8 1 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 530 0 117 30 1 29 29 0 8 1 art_table 32 533 0 117 4 0 4 4 0 8 0 art_node 16 136 0 47 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 9 2 1 1 1 0 8 1 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 26 0 16 1 0 1 1 0 8 0 shmpl 112 27 0 4 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 3142 0 1643 95 0 95 95 0 8 0 ffsino 248 3142 0 1643 95 0 95 95 0 8 0 nchpl 144 4586 0 2898 63 0 63 63 0 8 0 rtmask 32 4 0 4 2 1 1 1 0 8 1 uvmvnodes 80 3817 0 0 78 0 78 78 0 8 0 vnodes 216 3817 0 0 213 0 213 213 0 8 0 namei 1024 16994 0 16993 2 1 1 2 0 8 0 kstatmem 264 62 0 42 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 6 0 6 2 1 1 1 0 8 1 scxspl 216 13534 0 13534 8 7 1 8 1 8 1 plimitpl 152 361 0 343 1 0 1 1 0 8 0 sigapl 424 1299 0 1231 9 1 8 8 0 8 0 knotepl 120 52000 0 51952 28 19 9 16 0 8 7 kqueuepl 184 357 0 345 4 3 1 4 0 8 0 pipepl 296 183 0 156 3 0 3 3 0 8 0 fdescpl 440 1260 0 1230 5 1 4 5 0 8 0 filepl 120 9439 0 9212 17 4 13 13 0 8 4 lockfpl 104 248 0 245 1 0 1 1 0 8 0 lockfspl 48 106 0 103 1 0 1 1 0 8 0 sessionpl 144 28 0 20 1 0 1 1 0 8 0 pgrppl 48 52 0 36 1 0 1 1 0 8 0 ucredpl 104 1176 0 1162 1 0 1 1 0 8 0 zombiepl 144 1411 0 1410 2 1 1 1 0 8 0 processpl 1128 1299 0 1231 5 0 5 5 0 8 0 procpl 656 2655 0 2573 8 0 8 8 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 528 2632 0 2596 27 16 11 16 0 8 7 mcl64k 65536 56 0 56 2 1 1 1 0 8 1 mcl8k 8192 8 0 8 1 1 0 1 0 8 0 mcl4k 4096 3552 0 3500 15 7 8 14 0 8 0 mcl2k 2048 1080 0 1077 4 2 2 3 0 8 1 mtagpl 96 90 0 6 3 0 3 3 0 8 0 mbufpl 256 14570 0 14334 86 63 23 79 0 8 5 bufpl 280 3671 0 133 253 0 253 253 0 8 0 anonpl 24 187821 0 184549 55 23 32 45 0 187 9 amapchunkpl 152 36853 0 36343 47 13 34 34 0 158 14 amappl16 200 3123 0 3088 15 12 3 15 0 8 0 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 114 0 104 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 1 0 1 0 8 0 amappl12 168 1890 0 1860 3 1 2 3 0 8 0 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 247 0 247 1 1 0 1 0 8 0 amappl8 136 33 0 32 1 0 1 1 0 8 0 amappl7 128 105 0 93 1 0 1 1 0 8 0 amappl6 120 190 0 186 1 0 1 1 0 8 0 amappl5 112 122 0 115 1 0 1 1 0 8 0 amappl4 104 309 0 292 1 0 1 1 0 8 0 amappl3 96 6920 0 6806 4 0 4 4 0 8 0 amappl2 88 672 0 616 2 0 2 2 0 8 0 amappl1 80 12354 0 11809 13 0 13 13 0 8 0 amappl 88 9718 0 9544 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 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 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 29 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1260 0 1230 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1260 0 1230 1 0 1 1 0 8 0 vmmpekpl 168 11237 0 11208 2 0 2 2 0 8 0 vmmpepl 168 83835 0 81907 96 7 89 94 0 357 5 vmsppl 360 1259 0 1230 4 1 3 4 0 8 0 rwobjpl 32 26663 0 21958 38 0 38 38 0 8 0 pdppl 4096 2527 0 2460 121 54 67 83 0 8 0 pvpl 32 538232 0 529417 125 30 95 111 0 265 13 pmappl 216 1259 0 1230 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 376 0 137 9 0 9 9 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sys_msgrcv(ffff800035d16cf8,ffff80002a7e1cd0,ffff80002a7e1c20) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff800035d16cf8,ffff80002a7e1cd0,ffff80002a7e1c20) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80002a7e1cd0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a7e1cd0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1bcc545bf30, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace sys_msgrcv(ffff800035d16cf8,ffff80002a7e1cd0,ffff80002a7e1c20) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff800035d16cf8,ffff80002a7e1cd0,ffff80002a7e1c20) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80002a7e1cd0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a7e1cd0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1bcc545bf30, count: -3