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(ffff80002f0b1a08,ffff8000374c38e0,ffff8000374c3830) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002f0b1a08,ffff8000374c38e0,ffff8000374c3830) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff8000374c38e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000374c38e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc3772ed26a0, count: -3 ddb> show registers rdi 0 rsi 0x2000deaf511a rbp 0xffff8000374c3810 rbx 0xa741c007978a75ed rdx 0 rcx 0 rax 0xffff80002f0b1a08 r8 0x7f7fffffc000 r9 0 r10 0x3e8dd05b78512f8a r11 0x877f4ba8dc6921c1 r12 0xfffffd806b86fd48 r13 0xa741c007978a75ed r14 0xffff80000164bf00 r15 0x2000deaf511a rip 0xffffffff81a26292 sys_msgrcv+0x3f2 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000374c3770 ss 0 sys_msgrcv+0x3f2: movq 0x10(%r13),%rdi ddb> show proc PROC (syz-executor) tid=274399 pid=59264 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=83, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002f0b1ca0,0xffff80002f0b0028 process=0xffff8000ffffa898 user=0xffff8000374be000, vmspace=0xfffffd806cad7b90 estcpu=33, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 26119 518225 11638 0 2 0 syz-executor 26119 405183 11638 0 3 0x4000080 fsleep syz-executor 10214 46503 96284 0 2 0 syz-executor 10214 139069 96284 0 3 0x4000080 fsleep syz-executor 10214 133776 96284 0 2 0x4000000 syz-executor 59264 57329 49965 0 2 0 syz-executor 59264 468770 49965 0 3 0x4000080 fsleep syz-executor *59264 274399 49965 0 7 0x4000000 syz-executor 59264 218588 49965 0 2 0x4000000 syz-executor 13325 71252 11459 0 2 0 syz-executor 13325 91645 11459 0 3 0x4000080 kqread syz-executor 13325 315103 11459 0 2 0x4000000 syz-executor 13325 145905 11459 0 3 0x4000080 fsleep syz-executor 13325 234692 11459 0 2 0x4000000 syz-executor 56963 375028 78534 0 3 0x80 nanoslp syz-executor 56963 87417 78534 0 3 0x4000080 lockf syz-executor 56963 40763 78534 0 2 0x4000000 syz-executor 56963 518289 78534 0 3 0x4000080 fsleep syz-executor 105 130138 96924 0 3 0x82 nanoslp syz-executor 1331 322045 0 0 3 0x14200 acct acct 49965 46288 96924 0 3 0x82 nanoslp syz-executor 11915 431293 96924 0 2 0x2 syz-executor 11638 234116 96924 0 3 0x82 nanoslp syz-executor 96284 398969 96924 0 3 0x82 nanoslp syz-executor 11459 76742 96924 0 3 0x82 nanoslp syz-executor 43046 391743 96924 0 2 0x2 syz-executor 78534 57067 96924 0 3 0x82 nanoslp syz-executor 96924 408022 68482 0 3 0x82 kqread syz-executor 68482 178388 21665 0 3 0x10008a sigsusp ksh 21665 418659 25365 0 3 0x98 kqread sshd-session 25365 86493 67681 0 3 0x92 kqread sshd-session 31453 427213 1 0 3 0x100083 ttyin getty 67681 483250 1 0 3 0x88 kqread sshd 34846 116761 1491 73 3 0x1100090 kqread syslogd 1491 506782 1 0 3 0x100082 sbwait syslogd 45179 82554 1 0 3 0x100080 kqread resolvd 71681 462181 46316 77 3 0x100092 kqread dhcpleased 4362 176489 46316 77 3 0x100092 kqread dhcpleased 46316 294480 1 0 3 0x80 kqread dhcpleased 45615 447748 0 0 3 0x14200 bored smr 44069 322289 0 0 2 0x14200 zerothread 72052 473477 0 0 3 0x14200 aiodoned aiodoned 16310 448152 0 0 3 0x14200 syncer update 6361 65392 0 0 3 0x14200 cleaner cleaner 81898 31994 0 0 3 0x14200 reaper reaper 16401 84496 0 0 3 0x14200 pgdaemon pagedaemon 28362 268023 0 0 3 0x14200 bored viomb 95991 31950 0 0 3 0x40014200 acpi0 acpi0 95132 89853 0 0 3 0x14200 bored softnet0 62415 193893 0 0 3 0x14200 bored systqmp 43969 508540 0 0 3 0x14200 bored systq 24046 351557 0 0 3 0x40014200 tmoslp softclock 48565 134733 0 0 3 0x40014200 idle0 1 513388 0 0 3 0x82 nanoslp init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11040 12168K 12377K 166960K 12676 0 pcb 18 15K 16K 166960K 123 0 rtable 234 10K 11K 166960K 471 0 pf 36 14K 19K 166960K 101 0 ifaddr 39 7K 8K 166960K 67 0 ifgroup 46 2K 2K 166960K 90 0 sysctl 3 1K 9K 166960K 11 0 counters 32 17K 18K 166960K 53 0 ioctlops 0 0K 4K 166960K 273 0 iov 0 0K 12K 166960K 13 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1351 85K 85K 166960K 1799 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 21 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 540 0 sigio 0 0K 0K 166960K 6 0 proc 60 59K 100K 166960K 576 0 subproc 72 4K 4K 166960K 82 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 39 0 in_multi 91 6K 7K 166960K 123 0 ether_multi 1 0K 0K 166960K 3 0 mrt 0 0K 0K 166960K 20 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 424 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 226 158K 174K 166960K 6729 0 UVM aobj 15 2K 2K 166960K 17 0 pinsyscall 38 76K 93K 166960K 1647 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 11 0 NDP 10 0K 2K 166960K 45 0 temp 63 9096K 9160K 166960K 24263 0 kqueue 15 24K 29K 166960K 98 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 120 126 0 123 3 2 1 3 0 8 0 rtentry 136 130 0 37 4 0 4 4 0 8 0 unpcb 144 389 0 374 6 0 6 6 0 8 5 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 164 0 160 7 3 4 4 0 8 3 arp 96 20 0 4 1 0 1 1 0 8 0 ipq 40 6 0 3 1 0 1 1 0 8 0 ipqe 40 10 0 7 1 0 1 1 0 8 0 inpcb 328 525 0 517 9 2 7 7 0 8 6 ip6q 72 5 0 0 1 0 1 1 0 8 0 ip6af 40 5 0 0 1 0 1 1 0 8 0 nd6 112 29 0 7 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 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 17 0 17 1 0 1 1 0 8 1 pfstscr 40 8 0 8 1 0 1 1 0 8 1 pfrktable 1344 9 0 5 1 0 1 1 0 8 0 pfsrclim 320 4 0 3 1 0 1 1 0 8 0 pfanchor 1288 3 0 1 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 34 0 0 3 0 3 3 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 18 0 16 1 0 1 1 0 8 0 pfstate 384 9 0 8 1 0 1 1 0 8 0 pfrule 1360 8 0 7 2 1 1 1 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 552 0 144 31 0 31 31 0 8 4 art_table 40 555 0 144 5 0 5 5 0 8 0 art_node 32 130 0 46 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 4 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 18 0 8 1 0 1 1 0 8 0 shmpl 112 14 0 2 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2265 0 809 92 0 92 92 0 8 0 ffsino 256 2265 0 809 92 0 92 92 0 8 0 nchpl 144 3037 0 1344 64 0 64 64 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 vnodes 216 2655 0 0 148 0 148 148 0 8 0 namei 1024 9809 0 9808 5 2 3 3 0 8 2 pfiaddrpl 120 3 0 1 1 0 1 1 0 8 0 kstatmem 264 55 0 34 3 0 3 3 0 8 1 scxspl 216 10250 0 10250 8 7 1 8 1 8 1 plimitpl 152 100 0 83 1 0 1 1 0 8 0 sigapl 424 829 0 786 7 1 6 6 0 8 1 knotepl 120 21042 0 20788 17 1 16 16 0 8 5 kqueuepl 184 210 0 197 4 0 4 4 0 8 3 pipepl 304 139 0 112 3 0 3 3 0 8 0 fdescpl 448 815 0 786 5 1 4 5 0 8 0 filepl 120 4462 0 4247 15 2 13 13 0 8 6 lockfpl 104 140 0 136 1 0 1 1 0 8 0 lockfspl 48 65 0 62 1 0 1 1 0 8 0 sessionpl 144 72 0 64 1 0 1 1 0 8 0 pgrppl 48 85 0 69 1 0 1 1 0 8 0 ucredpl 104 420 0 409 1 0 1 1 0 8 0 zombiepl 144 1042 0 1041 1 0 1 1 0 8 0 processpl 1152 829 0 786 4 0 4 4 0 8 0 procpl 664 1514 0 1458 6 0 6 6 0 8 0 sosppl 176 4 0 4 1 0 1 1 0 8 1 sockpl 552 1066 0 1040 22 12 10 15 0 8 7 mcl64k 65536 31 0 28 2 1 1 1 0 8 0 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 8 0 8 2 1 1 1 0 8 1 mcl4k 4096 3067 0 3011 15 6 9 14 0 8 1 mcl2k 2048 517 0 514 2 1 1 1 0 8 0 mtagpl 96 13 0 8 2 1 1 1 0 8 0 mbufpl 256 8382 0 8199 20 6 14 17 0 8 0 bufpl 280 3287 0 102 228 0 228 228 0 8 0 anonpl 24 124416 0 121274 33 1 32 32 0 186 9 amapchunkpl 152 21240 0 20763 26 0 26 26 0 158 6 amappl16 200 1746 0 1718 6 2 4 4 0 8 1 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 420 0 419 1 0 1 1 0 8 0 amappl13 176 145 0 135 1 0 1 1 0 8 0 amappl12 168 1052 0 1025 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 58 0 48 1 0 1 1 0 8 0 amappl9 144 276 0 276 1 1 0 1 0 8 0 amappl8 136 105 0 103 1 0 1 1 0 8 0 amappl7 128 158 0 146 1 0 1 1 0 8 0 amappl6 120 219 0 218 1 0 1 1 0 8 0 amappl5 112 91 0 83 1 0 1 1 0 8 0 amappl4 104 253 0 236 1 0 1 1 0 8 0 amappl3 96 4173 0 4065 4 0 4 4 0 8 0 amappl2 88 517 0 460 2 0 2 2 0 8 0 amappl1 80 10594 0 10042 13 1 12 13 0 8 0 amappl 88 5950 0 5786 5 0 5 5 0 92 0 uvmvnodes 80 113 0 0 3 0 3 3 0 8 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma4096 4096 2 0 2 2 1 1 1 0 8 1 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 16 0 2 1 0 1 1 0 8 0 uaddrrnd 24 814 0 786 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 814 0 786 1 0 1 1 0 8 0 vmmpekpl 168 7917 0 7877 3 0 3 3 0 8 0 vmmpepl 168 57152 0 55395 85 1 84 84 0 357 2 vmsppl 368 814 0 786 4 1 3 4 0 8 0 rwobjpl 40 17606 0 16613 12 1 11 11 0 8 0 pdppl 4096 1635 0 1572 98 32 66 80 0 8 3 pvpl 32 351879 0 343771 101 3 98 98 0 265 17 pmappl 216 814 0 786 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 391 0 58 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sys_msgrcv(ffff80002f0b1a08,ffff8000374c38e0,ffff8000374c3830) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002f0b1a08,ffff8000374c38e0,ffff8000374c3830) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff8000374c38e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000374c38e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc3772ed26a0, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace sys_msgrcv(ffff80002f0b1a08,ffff8000374c38e0,ffff8000374c3830) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002f0b1a08,ffff8000374c38e0,ffff8000374c3830) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff8000374c38e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000374c38e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc3772ed26a0, count: -3