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(ffff80003c967790,ffff80003c9a9d40,ffff80003c9a9c90) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80003c967790,ffff80003c9a9d40,ffff80003c9a9c90) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c9a9d40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9a9d40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafe8ec820c0, count: -3 ddb> show registers rdi 0 rsi 0x200000001208 rbp 0xffff80003c9a9c70 rbx 0 rdx 0xffff80000142b640 rcx 0 rax 0xa r8 0x7f7fffffc000 r9 0 r10 0x350570f00922780f r11 0x607f3ba7b6dc6471 r12 0xfffffd806bda0eb8 r13 0xdeadbeefdeadbeef r14 0xffff800001424600 r15 0xa rip 0xffffffff82230d52 sys_msgrcv+0x3f2 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80003c9a9bd0 ss 0x10 sys_msgrcv+0x3f2: movq 0x10(%r13),%rdi ddb> show proc PROC (syz-executor) tid=46415 pid=60873 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c967cc0,0xffff80003c9a2fc8 process=0xffff80002a8dbff8 user=0xffff80003c9a4000, vmspace=0xfffffd806ba5d010 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 38113 395412 63191 0 2 0 syz-executor 38113 188318 63191 0 3 0x4000080 fsleep syz-executor 38113 981 63191 0 3 0x4000080 fsleep syz-executor 99939 63413 83620 0 2 0 syz-executor 99939 19072 83620 0 3 0x4000080 fsleep syz-executor 20935 410627 15295 0 2 0 syz-executor 20935 5779 15295 0 3 0x4000080 fsleep syz-executor 20935 109561 15295 0 3 0x4000080 fsleep syz-executor 60873 427145 52319 -1 2 0x10 syz-executor *60873 46415 52319 -1 7 0x4000010 syz-executor 60873 39249 52319 -1 3 0x4000090 fsleep syz-executor 60873 443958 52319 -1 2 0x4000010 syz-executor 92654 16338 0 0 3 0x14200 acct acct 5515 344681 0 0 3 0x14280 nfsidl nfsio 61498 466089 0 0 3 0x14280 nfsidl nfsio 533 361824 0 0 3 0x14280 nfsidl nfsio 47351 257740 0 0 3 0x14280 nfsidl nfsio 59185 458896 0 0 3 0x14280 nfsidl nfsio 32239 328842 0 0 3 0x14280 nfsidl nfsio 54996 330179 0 0 3 0x14280 nfsidl nfsio 94314 242164 0 0 3 0x14280 nfsidl nfsio 88850 358286 0 0 3 0x14280 nfsidl nfsio 18927 377275 0 0 3 0x14280 nfsidl nfsio 8447 476529 0 0 3 0x14280 nfsidl nfsio 68239 285312 0 0 3 0x14280 nfsidl nfsio 77844 157860 0 0 3 0x14280 nfsidl nfsio 5272 91846 0 0 3 0x14280 nfsidl nfsio 33489 470797 0 0 3 0x14280 nfsidl nfsio 76141 376373 0 0 3 0x14280 nfsidl nfsio 35019 413334 0 0 3 0x14280 nfsidl nfsio 34442 231253 0 0 3 0x14280 nfsidl nfsio 34643 357009 0 0 3 0x14280 nfsidl nfsio 5398 487159 0 0 3 0x14280 nfsidl nfsio 49279 267410 0 0 3 0x14200 bored sosplice 66636 164417 42547 0 2 0x2 syz-executor 83620 294952 42547 0 3 0x82 nanoslp syz-executor 63191 238938 42547 0 3 0x82 nanoslp syz-executor 34889 151851 42547 0 2 0x2 syz-executor 15295 446226 42547 0 3 0x82 nanoslp syz-executor 26873 515578 42547 0 2 0x2 syz-executor 22642 79615 42547 0 2 0x2 syz-executor 52319 428324 42547 0 3 0x82 nanoslp syz-executor 42547 389341 81694 0 3 0x82 kqread syz-executor 81694 255168 93354 0 3 0x10008a sigsusp ksh 93354 251122 70842 0 3 0x98 kqread sshd-session 70842 197479 99367 0 3 0x92 kqread sshd-session 93526 389819 1 0 3 0x100083 ttyin getty 99367 473927 1 0 3 0x88 kqread sshd 38891 72408 35835 73 3 0x1100090 kqread syslogd 35835 98498 1 0 3 0x100082 sbwait syslogd 87530 168834 1 0 3 0x100080 kqread resolvd 67255 279849 14087 77 3 0x100092 kqread dhcpleased 66269 274920 14087 77 3 0x100092 kqread dhcpleased 14087 97918 1 0 3 0x80 kqread dhcpleased 67612 51594 0 0 3 0x14200 bored smr 79024 234312 0 0 2 0x14200 zerothread 81654 224074 0 0 3 0x14200 aiodoned aiodoned 58886 174468 0 0 3 0x14200 syncer update 55431 77873 0 0 3 0x14200 cleaner cleaner 95740 85978 0 0 3 0x14200 reaper reaper 90749 375147 0 0 3 0x14200 pgdaemon pagedaemon 89692 190276 0 0 3 0x14200 bored viomb 99003 33329 0 0 3 0x40014200 acpi0 acpi0 19159 504831 0 0 3 0x14200 bored softnet7 62748 230974 0 0 3 0x14200 bored softnet6 85625 247070 0 0 3 0x14200 bored softnet5 51861 179918 0 0 3 0x14200 bored softnet4 77788 142148 0 0 3 0x14200 bored softnet3 90258 507148 0 0 3 0x14200 bored softnet2 48427 198293 0 0 3 0x14200 bored softnet1 98192 335366 0 0 3 0x14200 bored softnet0 80880 30271 0 0 3 0x14200 smrbar systqmp 45574 7036 0 0 3 0x14200 bored systq 79752 284129 0 0 2 0x40014200 softclock 3154 135520 0 0 3 0x40014200 idle0 1 323993 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 10191 11044K 11787K 166960K 12192 0 pcb 17 15K 16K 166960K 199 0 rtable 203 9K 9K 166960K 395 0 pf 34 13K 14K 166960K 79 0 ifaddr 41 7K 7K 166960K 69 0 ifgroup 54 2K 2K 166960K 103 0 sysctl 3 1K 9K 166960K 10 0 counters 33 17K 18K 166960K 53 0 ioctlops 0 0K 4K 166960K 105 0 iov 0 0K 16K 166960K 102 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1432 90K 91K 166960K 1989 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 103 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 236K 166960K 724 0 sigio 0 0K 0K 166960K 16 0 proc 60 59K 116K 166960K 560 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 90 0 in_multi 91 6K 7K 166960K 137 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 6 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 1K 166960K 465 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 208 150K 170K 166960K 8132 0 UVM aobj 19 2K 4K 166960K 22 0 pinsyscall 36 72K 94K 166960K 1769 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 37 0 NDP 12 0K 2K 166960K 44 0 temp 56 8634K 8762K 166960K 16091 0 kqueue 13 20K 28K 166960K 125 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 120 181 0 178 3 1 2 2 0 8 1 rtentry 136 135 0 51 4 0 4 4 0 8 0 unpcb 144 420 0 405 5 1 4 4 0 8 3 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 2 0 2 2 1 1 1 0 8 1 tcpcb 736 297 0 289 7 0 7 7 0 8 6 arp 88 16 0 5 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 1 1 0 1 1 0 8 0 inpcb 328 896 0 885 19 9 10 18 0 8 8 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 6 0 3 1 0 1 1 0 8 0 nd6 104 28 0 9 1 0 1 1 0 8 0 pkpcb 40 6 0 6 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 0 1 1 0 8 1 ppxss 1072 13 0 13 2 1 1 1 0 8 1 pppxif 1384 1 0 1 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 0 1 1 0 8 1 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 2 1 0 1 1 0 8 0 pfstate 384 2 0 1 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 256 637 0 243 32 2 30 31 0 8 4 art_table 40 640 0 243 5 0 5 5 0 8 0 art_node 32 133 0 59 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 9 2 1 1 1 0 8 0 semapl 112 95 0 85 1 0 1 1 0 8 0 shmpl 112 19 0 3 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 2688 0 1189 95 0 95 95 0 8 0 ffsino 256 2688 0 1189 95 0 95 95 0 8 0 nchpl 144 3708 0 2032 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 3131 0 0 64 0 64 64 0 8 0 vnodes 216 3131 0 0 174 0 174 174 0 8 0 namei 1024 11767 0 11766 2 1 1 2 0 8 0 kstatmem 264 52 0 28 2 0 2 2 0 8 0 scsiplug 72 2 0 2 2 1 1 1 0 8 1 scxspl 216 12201 0 12201 15 7 8 8 1 8 8 plimitpl 152 109 0 93 1 0 1 1 0 8 0 sigapl 424 1015 0 946 10 1 9 9 0 8 0 knotepl 120 46644 0 46597 35 24 11 23 0 8 8 kqueuepl 184 269 0 260 5 2 3 3 0 8 2 pipepl 304 146 0 118 3 0 3 3 0 8 0 fdescpl 448 972 0 945 5 1 4 5 0 8 0 filepl 120 5648 0 5439 16 3 13 13 0 8 6 lockfpl 104 285 0 283 1 0 1 1 0 8 0 lockfspl 48 98 0 96 1 0 1 1 0 8 0 sessionpl 144 24 0 16 1 0 1 1 0 8 0 pgrppl 48 44 0 28 1 0 1 1 0 8 0 ucredpl 104 854 0 842 1 0 1 1 0 8 0 zombiepl 144 1247 0 1247 1 0 1 1 0 8 1 processpl 1168 1015 0 946 7 1 6 6 0 8 0 procpl 664 1984 0 1907 8 0 8 8 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 552 1526 0 1497 21 10 11 17 0 8 8 mcl64k 65536 106 0 106 2 1 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 8 0 8 2 1 1 1 0 8 1 mcl4k 4096 3186 0 3133 13 5 8 13 0 8 0 mcl2k 2048 980 0 972 6 3 3 4 0 8 1 mtagpl 96 11 0 7 1 0 1 1 0 8 0 mbufpl 256 12376 0 12218 130 106 24 119 0 8 8 bufpl 280 4240 0 121 295 0 295 295 0 8 0 anonpl 24 152289 0 148816 40 7 33 33 0 187 6 amapchunkpl 152 26312 0 25876 40 12 28 32 0 158 6 amappl16 200 2323 0 2289 7 1 6 6 0 8 2 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 107 0 97 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 1594 0 1568 3 1 2 3 0 8 0 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 22 0 20 1 0 1 1 0 8 0 amappl7 128 108 0 97 1 0 1 1 0 8 0 amappl6 120 176 0 173 1 0 1 1 0 8 0 amappl5 112 116 0 109 1 0 1 1 0 8 0 amappl4 104 270 0 254 1 0 1 1 0 8 0 amappl3 96 5118 0 5026 4 0 4 4 0 8 1 amappl2 88 648 0 593 2 0 2 2 0 8 0 amappl1 80 10718 0 10183 13 0 13 13 0 8 0 amappl 88 7387 0 7242 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 128 254 0 254 1 1 0 1 0 8 0 dma64 64 7 0 7 2 1 1 1 0 8 1 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 21 0 3 1 0 1 1 0 8 0 uaddrrnd 24 972 0 945 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 972 0 945 1 0 1 1 0 8 0 vmmpekpl 168 9350 0 9312 2 0 2 2 0 8 0 vmmpepl 168 65694 0 63970 93 5 88 89 0 357 3 vmsppl 368 971 0 945 4 1 3 4 0 8 0 rwobjpl 40 22191 0 18208 41 0 41 41 0 8 0 pdppl 4096 1950 0 1890 108 42 66 80 0 8 6 pvpl 32 419796 0 411491 125 19 106 106 0 265 23 pmappl 216 971 0 945 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 521 0 167 13 1 12 13 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sys_msgrcv(ffff80003c967790,ffff80003c9a9d40,ffff80003c9a9c90) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80003c967790,ffff80003c9a9d40,ffff80003c9a9c90) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c9a9d40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9a9d40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafe8ec820c0, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace sys_msgrcv(ffff80003c967790,ffff80003c9a9d40,ffff80003c9a9c90) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80003c967790,ffff80003c9a9d40,ffff80003c9a9c90) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c9a9d40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9a9d40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafe8ec820c0, count: -3