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(ffff80002f12e2d8,ffff80003c971ab0,ffff80003c971a00) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002f12e2d8,ffff80003c971ab0,ffff80003c971a00) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c971ab0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c971ab0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x318e0bce30, count: -3 ddb> show registers rdi 0 rsi 0x200000001208 rbp 0xffff80003c9719e0 rbx 0 rdx 0xffff800001438d40 rcx 0 rax 0xa r8 0x7f7fffffc000 r9 0 r10 0xae4691c75c46da16 r11 0xf99a835da49e0f1d r12 0xfffffd806b71cf50 r13 0xdeadbeefdeadbeef r14 0xffff800001485600 r15 0xa rip 0xffffffff81c03632 sys_msgrcv+0x3f2 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80003c971940 ss 0x10 sys_msgrcv+0x3f2: movq 0x10(%r13),%rdi ddb> show proc PROC (syz-executor) tid=66101 pid=63290 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=82, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002f12e040,0xffff80002a8102c0 process=0xffff80003ca55ff8 user=0xffff80003c96c000, vmspace=0xfffffd807471e5d8 estcpu=32, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 76047 430799 80402 0 2 0 syz-executor 76047 123447 80402 0 3 0x4000080 fsleep syz-executor 310 24882 97462 0 2 0 syz-executor 310 232834 97462 0 3 0x4000080 fsleep syz-executor 310 403780 97462 0 3 0x4000080 fsleep syz-executor 310 359739 97462 0 3 0x4000080 fsleep syz-executor 80098 100175 36449 0 2 0 syz-executor 80098 439805 36449 0 2 0x4000000 syz-executor 80098 376365 36449 0 3 0x4000080 fsleep syz-executor 80098 510176 36449 0 3 0x4000080 fsleep syz-executor 87879 29712 97248 0 2 0 syz-executor 87879 412610 97248 0 3 0x4000080 fsleep syz-executor 87879 414804 97248 0 3 0x4000080 fsleep syz-executor 63290 250503 24748 0 2 0 syz-executor *63290 66101 24748 0 7 0x4000000 syz-executor 63290 517811 24748 0 3 0x4000080 fsleep syz-executor 63290 142355 24748 0 2 0x4000000 syz-executor 63290 155053 24748 0 2 0x4000000 syz-executor 58736 291928 42240 0 2 0 syz-executor 58736 473002 42240 0 3 0x4000080 fsleep syz-executor 14767 176971 0 0 3 0x14280 nfsidl nfsio 66356 100856 0 0 3 0x14280 nfsidl nfsio 2302 116100 0 0 3 0x14280 nfsidl nfsio 92457 452253 0 0 3 0x14280 nfsidl nfsio 70528 239591 0 0 3 0x14280 nfsidl nfsio 52336 98018 0 0 3 0x14280 nfsidl nfsio 73877 512841 0 0 3 0x14280 nfsidl nfsio 63674 251869 0 0 3 0x14280 nfsidl nfsio 27076 205485 0 0 3 0x14280 nfsidl nfsio 87089 251035 0 0 3 0x14280 nfsidl nfsio 22969 394228 0 0 3 0x14280 nfsidl nfsio 46996 39575 0 0 3 0x14280 nfsidl nfsio 53878 116640 0 0 3 0x14280 nfsidl nfsio 84845 441170 0 0 3 0x14280 nfsidl nfsio 60218 215850 0 0 3 0x14280 nfsidl nfsio 94028 30408 0 0 3 0x14280 nfsidl nfsio 40464 503506 0 0 3 0x14280 nfsidl nfsio 90455 102389 0 0 3 0x14280 nfsidl nfsio 60014 502148 0 0 3 0x14280 nfsidl nfsio 98778 244006 0 0 3 0x14280 nfsidl nfsio 19012 13271 0 0 3 0x14200 acct acct 15301 424284 13142 0 3 0x82 sbwait sshd-session 31687 313640 0 0 3 0x14200 bored sosplice 20495 43773 22052 0 2 0x10000003 syz-executor 46439 494385 22052 0 2 0x3 syz-executor 97462 92552 22052 0 2 0x3 syz-executor 42240 155968 22052 0 2 0x3 syz-executor 36449 94152 22052 0 2 0x3 syz-executor 80402 430584 22052 0 3 0x82 nanoslp syz-executor 97248 40899 22052 0 2 0x3 syz-executor 24748 190478 22052 0 2 0x3 syz-executor 22052 168532 80373 0 3 0x82 kqread syz-executor 80373 198589 32859 0 3 0x10008a sigsusp ksh 32859 317513 73445 0 3 0x98 kqread sshd-session 73445 145630 13142 0 3 0x92 kqread sshd-session 74643 384180 1 0 3 0x100083 ttyin getty 13142 441504 1 0 3 0x88 kqread sshd 9676 377431 9921 73 3 0x1100090 kqread syslogd 9921 229434 1 0 3 0x100082 sbwait syslogd 86321 440341 1 0 3 0x100080 kqread resolvd 18754 81349 29344 77 3 0x100092 kqread dhcpleased 46107 41616 29344 77 3 0x100092 kqread dhcpleased 29344 90762 1 0 3 0x80 kqread dhcpleased 64843 268425 0 0 3 0x14200 bored smr 58022 51072 0 0 2 0x14200 zerothread 27783 503938 0 0 3 0x14200 aiodoned aiodoned 36185 496375 0 0 3 0x14200 syncer update 26366 375104 0 0 3 0x14200 cleaner cleaner 79617 297241 0 0 3 0x14200 reaper reaper 87681 117189 0 0 3 0x14200 pgdaemon pagedaemon 8805 246543 0 0 3 0x14200 bored viomb 86603 350594 0 0 3 0x40014200 acpi0 acpi0 72780 398364 0 0 3 0x14200 bored softnet7 79228 343335 0 0 3 0x14200 bored softnet6 52192 296312 0 0 3 0x14200 bored softnet5 97171 34929 0 0 3 0x14200 bored softnet4 44605 208686 0 0 3 0x14200 bored softnet3 64773 521139 0 0 3 0x14200 bored softnet2 87240 479240 0 0 3 0x14200 bored softnet1 85338 436976 0 0 3 0x14200 bored softnet0 80184 224272 0 0 3 0x14200 bored systqmp 83614 111253 0 0 3 0x14200 bored systq 41624 262613 0 0 3 0x40014200 netlock softclock 93541 125472 0 0 3 0x40014200 idle0 1 495695 0 0 3 0x82 wait 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 10206 11046K 11308K 166960K 11667 0 pcb 19 13K 14K 166960K 175 0 rtable 176 6K 7K 166960K 337 0 pf 29 12K 17K 166960K 74 0 ifaddr 36 6K 8K 166960K 64 0 ifgroup 46 2K 2K 166960K 87 0 sysctl 4 1K 9K 166960K 10 0 counters 31 17K 18K 166960K 50 0 ioctlops 0 0K 4K 166960K 156 0 iov 0 0K 16K 166960K 92 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1371 86K 87K 166960K 1694 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 78 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 497 0 sigio 0 0K 0K 166960K 5 0 proc 60 59K 83K 166960K 502 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 1 0K 0K 166960K 42 0 in_multi 74 5K 7K 166960K 134 0 ether_multi 1 0K 0K 166960K 8 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 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 409 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 232 159K 169K 166960K 6278 0 UVM aobj 21 3K 3K 166960K 22 0 pinsyscall 39 78K 94K 166960K 1544 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 14 0 NDP 10 0K 2K 166960K 42 0 temp 44 8635K 8707K 166960K 17229 0 kqueue 16 26K 30K 166960K 99 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 120 133 0 130 3 0 3 3 0 8 2 rtentry 136 116 0 42 4 0 4 4 0 8 0 unpcb 144 505 0 484 5 0 5 5 0 8 4 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 138 0 130 4 0 4 4 0 8 3 arp 88 13 0 2 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 470 0 451 7 2 5 5 0 8 3 nd6 104 21 0 9 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 16 0 16 2 1 1 1 0 8 1 pppxif 1384 1 0 1 1 0 1 1 0 8 1 pfrule 1344 3 0 2 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 516 0 180 28 0 28 28 0 8 5 art_table 40 518 0 180 5 0 5 5 0 8 0 art_node 32 114 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 7 1 0 1 1 0 8 1 semapl 112 76 0 66 1 0 1 1 0 8 0 shmpl 112 19 0 1 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2298 0 800 95 0 95 95 0 8 0 ffsino 256 2298 0 800 95 0 95 95 0 8 0 nchpl 144 2998 0 1314 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 2548 0 0 52 0 52 52 0 8 0 vnodes 216 2548 0 0 142 0 142 142 0 8 0 namei 1024 9747 0 9747 2 1 1 2 0 8 1 kstatmem 264 50 0 30 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 9863 0 9863 15 7 8 8 1 8 8 plimitpl 152 131 0 113 1 0 1 1 0 8 0 sigapl 424 806 0 734 9 0 9 9 0 8 0 knotepl 120 17335 0 17278 22 12 10 22 0 8 7 kqueuepl 184 165 0 150 3 0 3 3 0 8 2 pipepl 304 166 0 139 3 0 3 3 0 8 0 fdescpl 448 764 0 735 5 1 4 5 0 8 0 filepl 120 4516 0 4280 15 0 15 15 0 8 7 lockfpl 104 158 0 154 1 0 1 1 0 8 0 lockfspl 48 68 0 64 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 35 0 18 1 0 1 1 0 8 0 ucredpl 104 681 0 669 1 0 1 1 0 8 0 zombiepl 144 1024 0 1023 2 1 1 1 0 8 0 processpl 1168 806 0 734 7 1 6 6 0 8 0 procpl 664 1509 0 1423 9 1 8 8 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 552 1153 0 1110 19 8 11 18 0 8 7 mcl64k 65536 14 0 14 2 1 1 1 0 8 1 mcl16k 16384 2 0 2 2 1 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 8 0 8 2 1 1 1 0 8 1 mcl4k 4096 2940 0 2890 15 7 8 14 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 820 0 817 2 0 2 2 0 8 1 mtagpl 96 42 0 40 2 1 1 1 0 8 0 mbufpl 256 9176 0 8975 57 36 21 52 0 8 6 bufpl 280 3513 0 119 243 0 243 243 0 8 0 anonpl 24 143544 0 140210 48 3 45 45 0 187 21 amapchunkpl 152 20347 0 19873 28 1 27 27 0 158 7 amappl16 200 2581 0 2551 18 8 10 15 0 8 8 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 110 0 98 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 1395 0 1366 3 1 2 3 0 8 0 amappl11 160 88 0 78 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 123 0 112 1 0 1 1 0 8 0 amappl6 120 196 0 192 1 0 1 1 0 8 0 amappl5 112 129 0 123 1 0 1 1 0 8 0 amappl4 104 284 0 268 1 0 1 1 0 8 0 amappl3 96 3820 0 3714 4 0 4 4 0 8 1 amappl2 88 637 0 575 2 0 2 2 0 8 0 amappl1 80 10188 0 9561 15 0 15 15 0 8 1 amappl 88 5554 0 5393 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 2 1 1 1 0 8 1 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 1 1 0 1 1 0 8 0 uaddrrnd 24 764 0 735 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 764 0 735 1 0 1 1 0 8 0 vmmpekpl 168 7904 0 7872 2 0 2 2 0 8 0 vmmpepl 168 55731 0 53784 96 2 94 94 0 357 3 vmsppl 368 763 0 735 4 1 3 4 0 8 0 rwobjpl 40 20104 0 16589 36 0 36 36 0 8 0 pdppl 4096 1535 0 1470 105 36 69 81 0 8 4 pvpl 32 355598 0 346431 106 1 105 105 0 265 16 pmappl 216 763 0 735 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 435 0 89 12 1 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sys_msgrcv(ffff80002f12e2d8,ffff80003c971ab0,ffff80003c971a00) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002f12e2d8,ffff80003c971ab0,ffff80003c971a00) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c971ab0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c971ab0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x318e0bce30, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace sys_msgrcv(ffff80002f12e2d8,ffff80003c971ab0,ffff80003c971a00) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff80002f12e2d8,ffff80003c971ab0,ffff80003c971a00) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c971ab0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c971ab0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x318e0bce30, count: -3