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(ffff800033104038,ffff80003c955b90,ffff80003c955ae0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff800033104038,ffff80003c955b90,ffff80003c955ae0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c955b90) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c955b90) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x680bde0c4a0, count: -3 ddb> show registers rdi 0 rsi 0x200000001208 rbp 0xffff80003c955ab0 rbx 0 rdx 0xffff80000146d880 rcx 0 rax 0xa r8 0x7f7fffffc000 r9 0 r10 0xce3d989477c544b2 r11 0x703158226b5828b0 r12 0xfffffd806a7ddca8 r13 0xdeafbeaddeafbead r14 0xffff80000158b900 r15 0xa rip 0xffffffff82dfa322 sys_msgrcv+0x3f2 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80003c955a10 ss 0x10 sys_msgrcv+0x3f2: movq 0x10(%r13),%rdi ddb> show proc PROC (syz-executor) tid=524257 pid=76849 tcnt=5 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=0xffff800033104558,0xffff80002a7f39c8 process=0xffff8000ffff5fd0 user=0xffff80003c950000, vmspace=0xfffffd806c2995b0 estcpu=33, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 73974 58406 83190 0 2 0 syz-executor 73974 297092 83190 0 2 0x4000000 syz-executor 36966 347358 57912 0 2 0 syz-executor 36966 206477 57912 0 3 0x4000080 fsleep syz-executor 36966 468324 57912 0 2 0x4000000 syz-executor 25099 108019 75578 0 2 0 syz-executor 25099 475060 75578 0 3 0x4000080 fsleep syz-executor 76849 217542 68147 0 2 0 syz-executor *76849 524257 68147 0 7 0x4000000 syz-executor 76849 351898 68147 0 2 0x4000000 syz-executor 76849 292161 68147 0 3 0x4000080 fsleep syz-executor 76849 192052 68147 0 2 0x4000000 syz-executor 32694 402448 86990 0 2 0 syz-executor 32694 201366 86990 0 3 0x4000080 kqread syz-executor 32694 476699 86990 0 3 0x4000080 fsleep syz-executor 32694 13481 86990 0 3 0x4000080 fsleep syz-executor 32694 496554 86990 0 2 0x4000000 syz-executor 14399 173054 1 0 3 0x100083 ttyin getty 72212 160207 0 0 3 0x14280 nfsidl nfsio 89964 335968 0 0 3 0x14280 nfsidl nfsio 62570 92417 0 0 3 0x14280 nfsidl nfsio 49402 197521 0 0 3 0x14280 nfsidl nfsio 20764 279714 0 0 3 0x14280 nfsidl nfsio 43747 124035 0 0 3 0x14280 nfsidl nfsio 22476 238738 0 0 3 0x14280 nfsidl nfsio 3774 450026 0 0 3 0x14280 nfsidl nfsio 42944 488612 0 0 3 0x14280 nfsidl nfsio 69296 231176 0 0 3 0x14280 nfsidl nfsio 81862 160122 0 0 3 0x14280 nfsidl nfsio 22738 395549 0 0 3 0x14280 nfsidl nfsio 51241 143019 0 0 3 0x14280 nfsidl nfsio 13539 13475 0 0 3 0x14280 nfsidl nfsio 75153 474054 0 0 3 0x14280 nfsidl nfsio 42716 440831 0 0 3 0x14280 nfsidl nfsio 98333 155459 0 0 3 0x14280 nfsidl nfsio 97020 314909 0 0 3 0x14280 nfsidl nfsio 12491 114030 0 0 3 0x14280 nfsidl nfsio 51936 494310 0 0 3 0x14280 nfsidl nfsio 82311 39969 33252 0 2 0x2 syz-executor 9616 317880 0 0 3 0x14200 bored sosplice 83190 156293 33252 0 3 0x82 nanoslp syz-executor 58096 172604 33252 0 2 0x2 syz-executor 68147 515852 33252 0 3 0x82 nanoslp syz-executor 75578 302872 33252 0 3 0x82 nanoslp syz-executor 57912 208940 33252 0 3 0x82 nanoslp syz-executor 86990 30953 33252 0 3 0x82 nanoslp syz-executor 99870 35943 33252 0 2 0x2 syz-executor 33252 399119 79122 0 3 0x82 kqread syz-executor 79122 192801 82277 0 3 0x10008a sigsusp ksh 82277 121240 3930 0 3 0x98 kqread sshd-session 3930 262753 21223 0 3 0x92 kqread sshd-session 21223 8127 1 0 3 0x88 kqread sshd 85055 280823 32014 73 3 0x1100090 kqread syslogd 32014 302048 1 0 3 0x100082 sbwait syslogd 99519 342445 1 0 3 0x100080 kqread resolvd 71312 179752 55785 77 3 0x100092 kqread dhcpleased 52758 267561 55785 77 3 0x100092 kqread dhcpleased 55785 373814 1 0 3 0x80 kqread dhcpleased 46426 162108 0 0 3 0x14200 bored smr 79096 200719 0 0 2 0x14200 zerothread 18756 29081 0 0 3 0x14200 aiodoned aiodoned 75975 174773 0 0 3 0x14200 syncer update 23927 213395 0 0 3 0x14200 cleaner cleaner 18270 319763 0 0 3 0x14200 reaper reaper 32651 286706 0 0 3 0x14200 pgdaemon pagedaemon 96018 123334 0 0 3 0x14200 bored viomb 6845 248357 0 0 3 0x40014200 acpi0 acpi0 16313 423771 0 0 3 0x14200 bored softnet3 81972 166854 0 0 3 0x14200 bored softnet2 90455 210356 0 0 3 0x14200 bored softnet1 78181 125157 0 0 3 0x14200 bored softnet0 31704 233785 0 0 3 0x14200 bored systqmp 24574 18064 0 0 3 0x14200 bored systq 47786 260578 0 0 3 0x40014200 tmoslp softclock 62632 115667 0 0 3 0x40014200 idle0 1 217000 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 10211 11117K 11933K 166960K 13473 0 pcb 18 13K 14K 166960K 215 0 rtable 219 9K 10K 166960K 555 0 pf 34 13K 15K 166960K 91 0 ifaddr 40 7K 8K 166960K 85 0 ifgroup 54 2K 2K 166960K 122 0 sysctl 4 1K 9K 166960K 16 0 counters 33 17K 18K 166960K 69 0 ioctlops 0 0K 4K 166960K 327 0 iov 0 0K 16K 166960K 125 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1472 92K 93K 166960K 2655 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 14K 166960K 31 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 106 0 dirhash 15 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 1221 0 sigio 0 0K 0K 166960K 25 0 proc 62 59K 124K 166960K 643 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 384 0 in_multi 93 6K 7K 166960K 142 0 ether_multi 1 0K 0K 166960K 8 0 mrt 2 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 217 970K 970K 166960K 217 0 exec 0 0K 2K 166960K 612 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 217 160K 176K 166960K 12747 0 UVM aobj 41 5K 5K 166960K 46 0 pinsyscall 38 76K 96K 166960K 2281 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 71 0 NDP 12 0K 2K 166960K 54 0 temp 76 8687K 8809K 166960K 64190 0 kqueue 14 22K 30K 166960K 221 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 120 158 0 154 2 0 2 2 0 8 1 rtentry 136 157 0 61 4 0 4 4 0 8 0 unpcb 144 1110 0 1095 6 0 6 6 0 8 5 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 308 0 304 8 0 8 8 0 8 7 arp 88 22 0 6 1 0 1 1 0 8 0 ipq 40 4 0 1 1 0 1 1 0 8 0 ipqe 40 7 0 3 1 0 1 1 0 8 0 inpcb 344 1190 0 1182 9 0 9 9 0 8 8 ip6q 72 2 0 2 1 0 1 1 0 8 1 ip6af 40 4 0 4 1 0 1 1 0 8 1 nd6 104 40 0 12 1 0 1 1 0 8 0 pkpcb 40 14 0 14 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 28 0 28 1 0 1 1 0 8 1 pppxif 1384 6 0 6 1 0 1 1 0 8 1 pfstscr 40 4 0 4 2 1 1 1 0 8 1 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfstkey 128 3 0 3 2 1 1 1 0 8 1 pfstate 384 2 0 2 2 1 1 1 0 8 1 pfrule 1344 1 0 1 1 0 1 1 0 8 1 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 664 0 225 30 0 30 30 0 8 1 art_table 32 666 0 225 4 0 4 4 0 8 0 art_node 16 152 0 66 1 0 1 1 0 8 0 sysvmsgpl 40 62 0 53 1 0 1 1 0 8 0 semapl 112 102 0 92 1 0 1 1 0 8 0 shmpl 112 43 0 5 2 0 2 2 0 8 0 dirhash 1024 21 0 2 3 0 3 3 0 8 0 dino2pl 256 3668 0 2176 95 0 95 95 0 8 0 ffsino 248 3668 0 2176 95 0 95 95 0 8 0 nchpl 144 5427 0 4912 63 32 31 63 0 8 8 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 4607 0 0 95 0 95 95 0 8 0 vnodes 216 4607 0 0 256 0 256 256 0 8 0 namei 1024 19247 0 19246 3 2 1 2 0 8 0 kstatmem 264 72 0 48 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 8 0 8 1 0 1 1 0 8 1 scxspl 216 16335 0 16335 10 2 8 8 1 8 8 plimitpl 152 410 0 394 1 0 1 1 0 8 0 sigapl 424 1521 0 1455 9 1 8 8 0 8 0 knotepl 120 476483 0 476435 44 34 10 17 0 8 8 kqueuepl 184 385 0 374 1 0 1 1 0 8 0 pipepl 296 255 0 228 5 0 5 5 0 8 2 fdescpl 440 1483 0 1454 5 1 4 5 0 8 0 filepl 120 10209 0 9992 15 0 15 15 0 8 5 lockfpl 104 332 0 330 1 0 1 1 0 8 0 lockfspl 48 136 0 134 1 0 1 1 0 8 0 sessionpl 144 25 0 17 1 0 1 1 0 8 0 pgrppl 48 88 0 72 1 0 1 1 0 8 0 ucredpl 104 1567 0 1556 1 0 1 1 0 8 0 zombiepl 144 2202 0 2202 2 1 1 1 0 8 1 processpl 1160 1521 0 1455 5 0 5 5 0 8 0 procpl 656 3450 0 3372 8 0 8 8 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 528 2511 0 2484 18 7 11 15 0 8 8 mcl64k 65536 136 0 135 1 0 1 1 0 8 0 mcl16k 16384 6 0 6 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl9k 9216 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 12 0 12 2 1 1 1 0 8 1 mcl4k 4096 3921 0 3870 14 6 8 13 0 8 1 mcl2k 2048 1292 0 1286 2 0 2 2 0 8 0 mtagpl 96 198 0 84 5 0 5 5 0 8 1 mbufpl 256 16233 0 15969 33 4 29 33 0 8 8 bufpl 280 5508 0 129 385 0 385 385 0 8 0 anonpl 24 228078 0 219865 76 0 76 76 0 187 0 amapchunkpl 152 42556 0 42045 34 0 34 34 0 158 11 amappl16 200 4690 0 4427 41 14 27 27 0 8 2 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 108 0 98 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 2169 0 2142 3 1 2 3 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 1 0 1 1 1 0 1 0 8 0 amappl9 144 272 0 271 2 1 1 1 0 8 0 amappl8 136 82 0 80 1 0 1 1 0 8 0 amappl7 128 105 0 94 1 0 1 1 0 8 0 amappl6 120 193 0 190 1 0 1 1 0 8 0 amappl5 112 124 0 117 1 0 1 1 0 8 0 amappl4 104 293 0 275 1 0 1 1 0 8 0 amappl3 96 8751 0 8656 4 0 4 4 0 8 0 amappl2 88 631 0 574 2 0 2 2 0 8 0 amappl1 80 12443 0 11899 13 0 13 13 0 8 0 amappl 88 11891 0 11739 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 8 0 8 2 1 1 1 0 8 1 dma128 128 255 0 255 2 1 1 1 0 8 1 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 2 1 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 45 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1482 0 1454 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1482 0 1454 1 0 1 1 0 8 0 vmmpekpl 168 13540 0 13501 3 0 3 3 0 8 0 vmmpepl 168 98140 0 96122 105 0 105 105 0 357 5 vmsppl 360 1482 0 1454 4 1 3 4 0 8 0 rwobjpl 32 31391 0 25663 48 0 48 48 0 8 0 pdppl 4096 2970 0 2908 104 38 66 82 0 8 4 pvpl 32 638321 0 624738 147 1 146 146 0 265 2 pmappl 216 1482 0 1454 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 304 0 54 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sys_msgrcv(ffff800033104038,ffff80003c955b90,ffff80003c955ae0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff800033104038,ffff80003c955b90,ffff80003c955ae0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c955b90) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c955b90) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x680bde0c4a0, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace sys_msgrcv(ffff800033104038,ffff80003c955b90,ffff80003c955ae0) at sys_msgrcv+0x3f2 msg_copyout sys/kern/sysv_msg.c:639 [inline] sys_msgrcv(ffff800033104038,ffff80003c955b90,ffff80003c955ae0) at sys_msgrcv+0x3f2 sys/kern/sysv_msg.c:349 syscall(ffff80003c955b90) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c955b90) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x680bde0c4a0, count: -3