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(ffff80003c9c2568,ffff80003c9a9200,ffff80003c9a9150) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80003c9c2568,ffff80003c9a9200,ffff80003c9a9150) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c9a9200) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9a9200) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5b6be1f3cb0, count: -3 ddb> show registers rdi 0 rsi 0x200000001208 rbp 0xffff80003c9a9130 rbx 0 rdx 0xffff8000014295c0 rcx 0 rax 0xa r8 0x7f7fffffc000 r9 0 r10 0x15ff5698080bf349 r11 0xe69d2fe03e0c228a r12 0xfffffd806ba27f28 r13 0xdeaf4152deaf4152 r14 0xffff8000014cc300 r15 0xa rip 0xffffffff831128d2 sys_msgrcv+0x3f2 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80003c9a9090 ss 0x10 sys_msgrcv+0x3f2: movq 0x10(%r13),%rdi ddb> show proc PROC (syz-executor) tid=397834 pid=62750 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=81, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c9c2800,0xffff80002a825790 process=0xffff80003ca26480 user=0xffff80003c9a4000, vmspace=0xfffffd806adc9e78 estcpu=31, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 79350 440863 98739 0 3 0x3000 suspend syz-executor 79350 75803 98739 0 2 0x4081000 syz-executor 28190 113785 1807 0 2 0 syz-executor 39087 261514 75280 0 2 0x10 syz-executor 39087 517428 75280 0 3 0x4000090 fsleep syz-executor 39087 439349 75280 0 2 0x4000010 syz-executor 27981 111927 0 0 3 0x14200 acct acct 62750 19266 67385 0 2 0 syz-executor *62750 397834 67385 0 7 0x4000000 syz-executor 62750 385387 67385 0 3 0x4000080 fsleep syz-executor 62750 58703 67385 0 2 0x4000000 syz-executor 62750 209081 67385 0 2 0x4000000 syz-executor 29637 13172 75362 0 2 0 syz-executor 29637 197193 75362 0 3 0x4000080 fsleep syz-executor 29637 436395 75362 0 3 0x4000080 fsleep syz-executor 44789 246680 11122 0 2 0 syz-executor 44789 266726 11122 0 3 0x4000080 fsleep syz-executor 44789 321810 11122 0 3 0x4000080 fsleep syz-executor 44789 368952 11122 0 2 0x4000000 syz-executor 2128 365242 30441 0 3 0x80 nanoslp syz-executor 2128 202649 30441 0 3 0x4000080 sbwait syz-executor 2128 372761 30441 0 3 0x4000080 fsleep syz-executor 2128 263879 30441 0 3 0x4000080 fsleep syz-executor 2128 112928 30441 0 3 0x4000080 fsleep syz-executor 75154 81240 52049 0 2 0 syz-executor 75154 74802 52049 0 2 0x4000000 syz-executor 75154 41946 52049 0 3 0x4000080 fsleep syz-executor 27663 358575 0 0 3 0x14280 nfsidl nfsio 22915 94619 0 0 3 0x14280 nfsidl nfsio 98855 481004 0 0 3 0x14280 nfsidl nfsio 57067 399329 0 0 3 0x14280 nfsidl nfsio 49727 483591 0 0 3 0x14280 nfsidl nfsio 65466 452210 0 0 3 0x14280 nfsidl nfsio 86939 491439 0 0 3 0x14280 nfsidl nfsio 4962 208971 0 0 3 0x14280 nfsidl nfsio 24472 149460 0 0 3 0x14280 nfsidl nfsio 48701 257304 0 0 3 0x14280 nfsidl nfsio 81775 84740 0 0 3 0x14280 nfsidl nfsio 80522 43704 0 0 3 0x14280 nfsidl nfsio 5481 311527 0 0 3 0x14280 nfsidl nfsio 5649 252146 0 0 3 0x14280 nfsidl nfsio 77951 439742 0 0 3 0x14280 nfsidl nfsio 75649 115911 0 0 3 0x14280 nfsidl nfsio 99159 118392 0 0 3 0x14280 nfsidl nfsio 59317 288812 0 0 3 0x14280 nfsidl nfsio 76668 7034 0 0 3 0x14280 nfsidl nfsio 28742 519745 0 0 3 0x14280 nfsidl nfsio 28733 414126 0 0 3 0x14200 bored sosplice 1807 368875 86752 0 3 0x82 nanoslp syz-executor 11122 196789 86752 0 3 0x82 nanoslp syz-executor 52049 122704 86752 0 3 0x82 nanoslp syz-executor 75362 207431 86752 0 3 0x82 nanoslp syz-executor 30441 118529 86752 0 3 0x82 nanoslp syz-executor 75280 265422 86752 0 3 0x82 nanoslp syz-executor 67385 217623 86752 0 3 0x82 nanoslp syz-executor 98739 369932 86752 0 3 0x82 nanoslp syz-executor 86752 101152 53119 0 3 0x82 kqread syz-executor 53119 26647 10502 0 3 0x10008a sigsusp ksh 10502 252458 11518 0 3 0x98 kqread sshd-session 11518 102020 8954 0 3 0x92 kqread sshd-session 54612 301796 1 0 3 0x100083 ttyin getty 8954 269844 1 0 3 0x88 kqread sshd 26684 231969 91319 73 3 0x1100090 kqread syslogd 91319 465178 1 0 3 0x100082 sbwait syslogd 73835 440453 1 0 3 0x100080 kqread resolvd 78586 420696 94549 77 3 0x100092 kqread dhcpleased 8795 352209 94549 77 3 0x100092 kqread dhcpleased 94549 380681 1 0 3 0x80 kqread dhcpleased 93557 133326 0 0 3 0x14200 bored smr 99057 240417 0 0 2 0x14200 zerothread 51481 113998 0 0 3 0x14200 aiodoned aiodoned 24903 325384 0 0 3 0x14200 syncer update 1588 330228 0 0 3 0x14200 cleaner cleaner 18946 498925 0 0 3 0x14200 reaper reaper 89278 80098 0 0 3 0x14200 pgdaemon pagedaemon 47753 307591 0 0 3 0x14200 bored viomb 19671 429592 0 0 3 0x40014200 acpi0 acpi0 6409 323794 0 0 3 0x14200 bored softnet7 52599 286004 0 0 3 0x14200 bored softnet6 59182 229023 0 0 3 0x14200 bored softnet5 92463 65784 0 0 3 0x14200 bored softnet4 65007 86459 0 0 3 0x14200 bored softnet3 96933 461891 0 0 3 0x14200 bored softnet2 39115 156864 0 0 3 0x14200 bored softnet1 44418 443250 0 0 3 0x14200 bored softnet0 21180 41761 0 0 3 0x14200 bored systqmp 38979 176850 0 0 3 0x14200 bored systq 21545 315788 0 0 3 0x40014200 tmoslp softclock 30984 428521 0 0 3 0x40014200 idle0 1 121013 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 10190 11168K 11237K 166960K 11683 0 pcb 17 12K 12K 166960K 63 0 rtable 211 6K 7K 166960K 279 0 pf 30 12K 13K 166960K 43 0 ifaddr 42 7K 8K 166960K 53 0 ifgroup 50 2K 2K 166960K 69 0 sysctl 1 1K 9K 166960K 8 0 counters 32 17K 18K 166960K 40 0 ioctlops 0 0K 2K 166960K 49 0 iov 0 0K 16K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1373 86K 87K 166960K 1530 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 27 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 341 0 sigio 0 0K 0K 166960K 3 0 proc 60 59K 108K 166960K 495 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 13 0 in_multi 99 7K 7K 166960K 104 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 1 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 544 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 251 152K 167K 166960K 4791 0 UVM aobj 6 4K 4K 166960K 8 0 pinsyscall 39 78K 94K 166960K 1363 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 11 0K 2K 166960K 32 0 temp 43 8633K 8697K 166960K 19601 0 kqueue 15 22K 32K 166960K 73 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 50 0 47 1 0 1 1 0 8 0 rtentry 136 101 0 6 4 0 4 4 0 8 0 unpcb 144 187 0 170 2 0 2 2 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 93 0 87 4 0 4 4 0 8 3 arp 88 11 0 1 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 69 0 67 1 0 1 1 0 8 0 inpcb 328 243 0 233 5 1 4 4 0 8 3 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 4 0 2 1 0 1 1 0 8 0 nd6 104 18 0 1 1 0 1 1 0 8 0 pkpcb 40 6 0 4 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 5 0 5 1 0 1 1 0 8 1 pppxif 1384 1 0 1 1 0 1 1 0 8 1 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 464 0 24 29 0 29 29 0 8 1 art_table 40 465 0 24 5 0 5 5 0 8 0 art_node 32 101 0 16 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 6 1 0 1 1 0 8 0 semupl 112 4 0 4 1 0 1 1 0 8 1 semapl 112 24 0 14 1 0 1 1 0 8 0 shmpl 112 5 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1937 0 435 95 0 95 95 0 8 0 ffsino 256 1937 0 435 95 0 95 95 0 8 0 nchpl 144 2443 0 760 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 2128 0 0 44 0 44 44 0 8 0 vnodes 216 2128 0 0 119 0 119 119 0 8 0 namei 1024 7752 0 7751 2 1 1 2 0 8 0 kstatmem 264 32 0 10 2 0 2 2 0 8 0 scxspl 216 9021 0 9021 15 7 8 8 1 8 8 plimitpl 152 128 0 111 1 0 1 1 0 8 0 sigapl 424 645 0 573 9 0 9 9 0 8 0 knotepl 120 11722 0 11667 10 0 10 10 0 8 8 kqueuepl 184 117 0 106 2 0 2 2 0 8 1 pipepl 304 150 0 122 3 0 3 3 0 8 0 fdescpl 448 602 0 572 5 0 5 5 0 8 1 filepl 120 2910 0 2678 9 0 9 9 0 8 1 lockfpl 104 90 0 85 1 0 1 1 0 8 0 lockfspl 48 45 0 40 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 32 0 16 1 0 1 1 0 8 0 ucredpl 104 334 0 321 1 0 1 1 0 8 0 zombiepl 144 752 0 751 2 1 1 1 0 8 0 processpl 1168 645 0 573 6 0 6 6 0 8 0 procpl 664 1060 0 970 8 0 8 8 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 552 489 0 457 7 1 6 6 0 8 3 mcl64k 65536 14 0 13 1 0 1 1 0 8 0 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 9 0 9 2 1 1 1 0 8 1 mcl4k 4096 2738 0 2687 13 4 9 13 0 8 1 mcl2k 2048 561 0 555 3 1 2 2 0 8 1 mtagpl 96 9 0 4 2 1 1 1 0 8 0 mbufpl 256 6133 0 5943 13 0 13 13 0 8 0 bufpl 280 3822 0 115 265 0 265 265 0 8 0 anonpl 24 123417 0 119888 35 3 32 32 0 187 9 amapchunkpl 152 15168 0 14609 35 0 35 35 0 158 13 amappl16 200 2361 0 2329 8 4 4 5 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 103 0 93 1 0 1 1 0 8 0 amappl13 176 24 0 24 1 1 0 1 0 8 0 amappl12 168 1211 0 1181 2 0 2 2 0 8 0 amappl11 160 117 0 107 1 0 1 1 0 8 0 amappl10 152 23 0 23 1 1 0 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 101 0 90 1 0 1 1 0 8 0 amappl6 120 171 0 168 1 0 1 1 0 8 0 amappl5 112 115 0 108 1 0 1 1 0 8 0 amappl4 104 262 0 248 1 0 1 1 0 8 0 amappl3 96 2673 0 2553 4 0 4 4 0 8 0 amappl2 88 622 0 567 2 0 2 2 0 8 0 amappl1 80 8717 0 8165 13 0 13 13 0 8 1 amappl 88 4113 0 3928 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 128 253 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 7 0 2 1 0 1 1 0 8 0 uaddrrnd 24 602 0 572 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 602 0 572 1 0 1 1 0 8 0 vmmpekpl 168 6440 0 6413 2 0 2 2 0 8 0 vmmpepl 168 44645 0 42722 90 4 86 86 0 357 2 vmsppl 368 601 0 572 4 0 4 4 0 8 1 rwobjpl 40 16941 0 13928 31 0 31 31 0 8 0 pdppl 4096 1210 0 1144 94 28 66 78 0 8 0 pvpl 32 289404 0 279757 97 0 97 97 0 265 18 pmappl 216 601 0 572 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 375 0 38 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sys_msgrcv(ffff80003c9c2568,ffff80003c9a9200,ffff80003c9a9150) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80003c9c2568,ffff80003c9a9200,ffff80003c9a9150) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c9a9200) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9a9200) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5b6be1f3cb0, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace sys_msgrcv(ffff80003c9c2568,ffff80003c9a9200,ffff80003c9a9150) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80003c9c2568,ffff80003c9a9200,ffff80003c9a9150) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c9a9200) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9a9200) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5b6be1f3cb0, count: -3