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(ffff80002a8d47c8,ffff80002a887b60,ffff80002a887ab0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002a8d47c8,ffff80002a887b60,ffff80002a887ab0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80002a887b60) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a887b60) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x851d30fe540, count: -3 ddb> show registers rdi 0 rsi 0x200000001208 rbp 0xffff80002a887a80 rbx 0 rdx 0 rcx 0 rax 0xa r8 0x7f7fffffc000 r9 0 r10 0x9f4d7ebed07d32d2 r11 0xf59613c22e05617 r12 0xfffffd806c0e9b18 r13 0xdeafbeaddeafbead r14 0xffff80000160e700 r15 0xa rip 0xffffffff81dc85d2 sys_msgrcv+0x3f2 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a8879e0 ss 0x10 sys_msgrcv+0x3f2: movq 0x10(%r13),%rdi ddb> show proc PROC (syz-executor) tid=127976 pid=42493 tcnt=4 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=0xffff80002a8d4ce8,0xffff80002a8d4548 process=0xffff8000ffff5238 user=0xffff80002a882000, vmspace=0xfffffd806c1d2180 estcpu=34, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 7989 277390 84896 0 2 0 syz-executor 7989 86972 84896 0 2 0x4000000 syz-executor 7989 185894 84896 0 2 0x4000000 syz-executor 31723 33656 76129 0 2 0 syz-executor 31723 415710 76129 0 3 0x4000080 pppxread syz-executor 2238 463399 65781 0 2 0 syz-executor 2238 191683 65781 0 3 0x4000080 fsleep syz-executor 25565 299649 98850 0 2 0 syz-executor 25565 175480 98850 0 2 0x4000000 syz-executor 84525 147344 74208 0 2 0 syz-executor 84525 348061 74208 0 3 0x4000080 fsleep syz-executor 84525 135878 74208 0 3 0x4000080 fsleep syz-executor 42493 503354 86132 0 2 0 syz-executor *42493 127976 86132 0 7 0x4000000 syz-executor 42493 451852 86132 0 2 0x4000000 syz-executor 42493 334231 86132 0 3 0x4000080 fsleep syz-executor 25951 140548 52187 0 3 0 vmmaplk syz-executor 25951 161307 52187 0 3 0x4000080 fsleep syz-executor 25951 155170 52187 0 3 0x4000080 fsleep syz-executor 25951 110121 52187 0 2 0x4000000 syz-executor 86132 300538 30970 0 3 0x82 nanoslp syz-executor 93044 323405 0 0 3 0x14200 acct acct 1595 180142 1 0 3 0x100083 ttyin getty 84896 243893 30970 0 3 0x82 nanoslp syz-executor 53265 453487 0 0 3 0x14280 nfsidl nfsio 89006 355594 0 0 3 0x14280 nfsidl nfsio 91844 86598 0 0 3 0x14280 nfsidl nfsio 46382 141911 0 0 3 0x14280 nfsidl nfsio 49857 277678 0 0 3 0x14280 nfsidl nfsio 51612 115187 0 0 3 0x14280 nfsidl nfsio 60276 217019 0 0 3 0x14280 nfsidl nfsio 70423 474241 0 0 3 0x14280 nfsidl nfsio 60567 74578 0 0 3 0x14280 nfsidl nfsio 44586 382870 0 0 3 0x14280 nfsidl nfsio 96879 298573 0 0 3 0x14280 nfsidl nfsio 79558 473990 0 0 3 0x14280 nfsidl nfsio 65352 379756 0 0 3 0x14280 nfsidl nfsio 55522 472781 0 0 3 0x14280 nfsidl nfsio 36130 50350 0 0 3 0x14280 nfsidl nfsio 31453 419830 0 0 3 0x14280 nfsidl nfsio 92907 131589 0 0 3 0x14280 nfsidl nfsio 96442 5166 0 0 3 0x14280 nfsidl nfsio 96625 236659 0 0 3 0x14280 nfsidl nfsio 67528 171369 0 0 3 0x14280 nfsidl nfsio 65781 270460 30970 0 3 0x82 nanoslp syz-executor 83871 151859 0 0 3 0x14200 bored sosplice 52187 179811 30970 0 3 0x82 nanoslp syz-executor 98850 111835 30970 0 3 0x82 nanoslp syz-executor 76129 321458 30970 0 3 0x82 nanoslp syz-executor 57686 92812 30970 0 2 0x2 syz-executor 74208 493181 30970 0 3 0x82 nanoslp syz-executor 30970 409136 29162 0 3 0x82 kqread syz-executor 29162 433384 12883 0 3 0x10008a sigsusp ksh 12883 195692 62029 0 3 0x98 kqread sshd-session 62029 431330 91062 0 3 0x92 kqread sshd-session 91062 498654 1 0 3 0x88 kqread sshd 65072 482521 49026 73 3 0x1100090 kqread syslogd 49026 366464 1 0 3 0x100082 sbwait syslogd 85344 497590 1 0 3 0x100080 kqread resolvd 46090 14408 650 77 3 0x100092 kqread dhcpleased 55410 485796 650 77 3 0x100092 kqread dhcpleased 650 455084 1 0 3 0x80 kqread dhcpleased 60967 154542 0 0 3 0x14200 bored smr 66394 470902 0 0 2 0x14200 zerothread 42597 1285 0 0 3 0x14200 aiodoned aiodoned 90834 288913 0 0 3 0x14200 syncer update 93844 372064 0 0 3 0x14200 cleaner cleaner 68756 188654 0 0 3 0x14200 reaper reaper 82449 26710 0 0 3 0x14200 pgdaemon pagedaemon 93045 454447 0 0 3 0x14200 bored viomb 84392 80622 0 0 3 0x40014200 acpi0 acpi0 4923 153032 0 0 3 0x14200 bored softnet3 15639 399926 0 0 3 0x14200 bored softnet2 48498 437197 0 0 3 0x14200 bored softnet1 96439 281831 0 0 3 0x14200 bored softnet0 66726 23795 0 0 3 0x14200 bored systqmp 77722 435959 0 0 3 0x14200 bored systq 1934 491313 0 0 3 0x40014200 tmoslp softclock 78299 400282 0 0 3 0x40014200 idle0 1 229277 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 10173 11039K 12182K 166960K 13106 0 pcb 82 18K 18K 166960K 516 0 rtable 162 6K 8K 166960K 609 0 pf 27 12K 16K 166960K 131 0 ifaddr 30 5K 7K 166960K 106 0 ifgroup 42 1K 2K 166960K 157 0 sysctl 4 1K 9K 166960K 10 0 counters 30 17K 18K 166960K 80 0 ioctlops 0 0K 4K 166960K 354 0 iov 0 0K 20K 166960K 72 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1495 94K 95K 166960K 2355 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 21 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 274 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 236K 166960K 1279 0 sigio 0 0K 0K 166960K 16 0 proc 60 59K 91K 166960K 698 0 subproc 72 4K 4K 166960K 109 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 146 0 in_multi 59 4K 7K 166960K 184 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 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 493 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 35 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 228 151K 167K 166960K 13403 0 UVM aobj 104 7K 7K 166960K 109 0 pinsyscall 38 76K 96K 166960K 2423 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 43 0 NDP 9 0K 2K 166960K 71 0 temp 77 8672K 8792K 166960K 60017 0 kqueue 15 24K 30K 166960K 254 0 SYN cache 2 8K 16K 166960K 3 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 132 0 129 1 0 1 1 0 8 0 rtentry 136 190 0 126 4 0 4 4 0 8 0 unpcb 144 1174 0 1159 6 0 6 6 0 8 5 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpqe 32 3 0 3 1 0 1 1 0 8 1 tcpcb 736 487 0 481 7 0 7 7 0 8 6 arp 88 30 0 17 1 0 1 1 0 8 0 ipq 40 3 0 3 1 0 1 1 0 8 1 ipqe 40 3 0 3 1 0 1 1 0 8 1 inpcb 328 1664 0 1590 16 7 9 12 0 8 2 ip6q 72 5 0 4 1 0 1 1 0 8 0 ip6af 40 8 0 7 1 0 1 1 0 8 0 nd6 104 46 0 32 1 0 1 1 0 8 0 pkpcb 40 10 0 10 2 1 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 34 0 34 1 0 1 1 0 8 1 pppxif 1384 7 0 7 1 0 1 1 0 8 1 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 3 0 1 1 0 1 1 0 8 0 pfstitem 24 1 0 0 1 0 1 1 0 8 0 pfstkey 128 1 0 0 1 0 1 1 0 8 0 pfstate 384 1 0 0 1 0 1 1 0 8 0 pfrule 1344 7 0 7 2 1 1 1 0 8 1 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 800 0 522 32 3 29 32 0 8 8 art_table 40 803 0 522 6 0 6 6 0 8 0 art_node 32 187 0 129 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 18 1 0 1 1 0 8 0 semapl 112 266 0 256 1 0 1 1 0 8 0 shmpl 112 106 0 5 4 1 3 3 0 8 0 dirhash 1024 26 0 9 3 0 3 3 0 8 0 dino2pl 256 3543 0 2042 95 0 95 95 0 8 0 ffsino 248 3544 0 2042 95 0 95 95 0 8 0 nchpl 144 5270 0 3576 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 4259 0 0 87 0 87 87 0 8 0 vnodes 216 4259 0 0 237 0 237 237 0 8 0 namei 1024 17924 0 17922 5 1 4 4 0 8 3 kstatmem 264 94 0 76 2 0 2 2 0 8 0 scsiplug 72 8 0 8 1 0 1 1 0 8 1 scxspl 216 17687 0 17687 9 7 2 8 1 8 2 plimitpl 152 286 0 270 1 0 1 1 0 8 0 sigapl 424 1561 0 1494 9 1 8 8 0 8 0 knotepl 120 294788 0 294736 18 8 10 10 0 8 8 kqueuepl 184 639 0 627 4 0 4 4 0 8 3 pipepl 296 223 0 195 3 0 3 3 0 8 0 fdescpl 440 1521 0 1492 5 1 4 5 0 8 0 filepl 120 10167 0 9887 14 0 14 14 0 8 5 lockfpl 104 583 0 580 1 0 1 1 0 8 0 lockfspl 48 214 0 211 1 0 1 1 0 8 0 sessionpl 144 31 0 23 1 0 1 1 0 8 0 pgrppl 48 68 0 52 1 0 1 1 0 8 0 ucredpl 104 1368 0 1357 1 0 1 1 0 8 0 zombiepl 144 2302 0 2302 2 1 1 1 0 8 1 processpl 1160 1561 0 1494 5 0 5 5 0 8 0 procpl 656 3563 0 3481 8 0 8 8 0 8 0 sosppl 168 8 0 8 2 1 1 1 0 8 1 sockpl 528 3007 0 2915 24 14 10 16 0 8 3 mcl64k 65536 71 0 71 2 1 1 1 0 8 1 mcl16k 16384 11 0 11 1 0 1 1 0 8 1 mcl12k 12288 4 0 4 1 0 1 1 0 8 1 mcl9k 9216 3 0 3 2 1 1 1 0 8 1 mcl8k 8192 17 0 17 2 1 1 1 0 8 1 mcl4k 4096 4211 0 4160 16 8 8 15 0 8 1 mcl2k2 2112 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 2033 0 2028 4 1 3 3 0 8 1 mtagpl 96 33 0 18 1 0 1 1 0 8 0 mbufpl 256 22922 0 22748 22 4 18 18 0 8 2 bufpl 280 5278 0 123 369 0 369 369 0 8 0 anonpl 24 218925 0 211263 98 12 86 86 0 187 6 amapchunkpl 152 44516 0 43971 39 4 35 35 0 158 11 amappl16 200 3262 0 3025 36 2 34 34 0 8 5 amappl15 192 7 0 7 2 1 1 1 0 8 1 amappl14 184 122 0 112 1 0 1 1 0 8 0 amappl13 176 23 0 23 1 1 0 1 0 8 0 amappl12 168 2205 0 2175 3 1 2 3 0 8 0 amappl11 160 51 0 41 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 1 0 1 0 8 0 amappl9 144 246 0 246 1 1 0 1 0 8 0 amappl8 136 56 0 54 1 0 1 1 0 8 0 amappl7 128 108 0 97 1 0 1 1 0 8 0 amappl6 120 229 0 226 1 0 1 1 0 8 0 amappl5 112 146 0 140 1 0 1 1 0 8 0 amappl4 104 316 0 300 1 0 1 1 0 8 0 amappl3 96 8918 0 8812 4 0 4 4 0 8 0 amappl2 88 709 0 652 2 0 2 2 0 8 0 amappl1 80 13888 0 13334 15 1 14 14 0 8 1 amappl 88 12475 0 12309 5 0 5 5 0 92 0 dma8192 8192 2 0 2 1 0 1 1 0 8 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 128 258 0 258 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 72 108 0 5 2 0 2 2 0 8 0 uaddrrnd 24 1521 0 1492 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1521 0 1492 1 0 1 1 0 8 0 vmmpekpl 168 13381 0 13336 3 0 3 3 0 8 0 vmmpepl 168 100430 0 98344 110 1 109 109 0 357 5 vmsppl 360 1520 0 1492 4 1 3 4 0 8 0 rwobjpl 32 31416 0 25991 44 0 44 44 0 8 0 pdppl 4096 3049 0 2984 121 54 67 83 0 8 2 pvpl 32 640814 0 627601 188 27 161 161 0 265 11 pmappl 216 1520 0 1492 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 320 0 76 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sys_msgrcv(ffff80002a8d47c8,ffff80002a887b60,ffff80002a887ab0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002a8d47c8,ffff80002a887b60,ffff80002a887ab0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80002a887b60) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a887b60) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x851d30fe540, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace sys_msgrcv(ffff80002a8d47c8,ffff80002a887b60,ffff80002a887ab0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002a8d47c8,ffff80002a887b60,ffff80002a887ab0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80002a887b60) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a887b60) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x851d30fe540, count: -3