kernel: protection fault trap, code=0 Stopped at in_pcb_iterator+0x12b: movq %rcx,0x8(%rdx) ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace in_pcb_iterator(ffffffff8396b598,fffffd8075e1d3d8,ffff80003c94b358) at in_pcb_iterator+0x12b sys/netinet/in_pcb.c:699 sysctl_file(ffff80003c94b658,4,0,ffff80003c94b688,ffff80002a777718) at sysctl_file+0xc57 sys/kern/kern_sysctl.c:-1 kern_sysctl(ffff80003c94b654,5,0,ffff80003c94b688,0,0,2660f91ce7551217) at kern_sysctl+0x167 sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002a777718,ffff80003c94b7c0,ffff80003c94b710) at sys_sysctl+0x3f2 sys/kern/kern_sysctl.c:-1 syscall(ffff80003c94b7c0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c94b7c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd3a1b29eb0, count: -6 ddb> show registers rdi 0xffff80002a8f4000 rsi 0x8a rbp 0xffff80003c94b330 rbx 0 rdx 0x7dcb615a7b31825a rcx 0xffff80003c94b360 rax 0xfffffd8075e1d150 r8 0xffff80002a777718 r9 0 r10 0x13f43b1242a2032d r11 0x216aecc976cc8a2c r12 0xfffffd8075e1d3d8 r13 0xfffffd8075e1d148 r14 0xffffffff8396b5a8 tcbtable+0x10 r15 0xffff80003c94b358 rip 0xffffffff830ab85b in_pcb_iterator+0x12b cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80003c94b2d0 ss 0x10 in_pcb_iterator+0x12b: movq %rcx,0x8(%rdx) ddb> show proc PROC (syz-executor) tid=83676 pid=45752 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a8d5c48,0xffffffff838cf7b8 process=0xffff8000ffff5b48 user=0xffff80003c946000, vmspace=0xfffffd806c2a8448 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 45752 32679 6489 0 2 0 syz-executor *45752 83676 6489 0 7 0x4000000 syz-executor 41429 395374 15933 0 2 0 syz-executor 41429 511148 15933 0 3 0x4000080 kqread syz-executor 21381 282608 26574 0 2 0 syz-executor 2628 452043 17110 0 3 0x80 nanoslp syz-executor 2628 384137 17110 0 3 0x4000080 kqpoll syz-executor 2628 360920 17110 0 3 0x4000080 fsleep syz-executor 2628 390617 17110 0 3 0x4000080 fsleep syz-executor 32027 373266 31594 60928 3 0x90 nanoslp syz-executor 32027 477694 31594 60928 3 0x4000090 bpf syz-executor 32027 433934 31594 60928 3 0x4000090 fsleep syz-executor 3677 113887 78986 0 2 0 syz-executor 3677 238330 78986 0 3 0x4000080 fsleep syz-executor 64188 304086 5333 0 3 0x80 nanoslp syz-executor 64188 488319 5333 0 3 0x4000080 ttyout syz-executor 64188 149505 5333 0 3 0x4000080 fsleep syz-executor 64188 463511 5333 0 3 0x4000080 fsleep syz-executor 31594 138611 3324 0 3 0x82 nanoslp syz-executor 6489 335578 3324 0 3 0x82 nanoslp syz-executor 76499 110296 0 0 3 0x14280 nfsidl nfsio 96897 141308 0 0 3 0x14280 nfsidl nfsio 20039 453453 0 0 3 0x14280 nfsidl nfsio 86376 174226 0 0 3 0x14280 nfsidl nfsio 79608 333620 0 0 3 0x14280 nfsidl nfsio 9352 44132 0 0 3 0x14280 nfsidl nfsio 21143 421161 0 0 3 0x14280 nfsidl nfsio 33407 194731 0 0 3 0x14280 nfsidl nfsio 19954 203840 0 0 3 0x14280 nfsidl nfsio 13834 472882 0 0 3 0x14280 nfsidl nfsio 95306 170949 0 0 3 0x14280 nfsidl nfsio 90080 112584 0 0 3 0x14280 nfsidl nfsio 49915 26845 0 0 3 0x14280 nfsidl nfsio 33094 419847 0 0 3 0x14280 nfsidl nfsio 69412 11296 0 0 3 0x14280 nfsidl nfsio 76995 342882 0 0 3 0x14280 nfsidl nfsio 72706 55321 0 0 3 0x14280 nfsidl nfsio 91393 426331 0 0 3 0x14280 nfsidl nfsio 98955 389921 0 0 3 0x14280 nfsidl nfsio 52492 197349 0 0 3 0x14280 nfsidl nfsio 70654 453255 0 0 3 0x14200 bored sosplice 15933 514703 3324 0 3 0x82 nanoslp syz-executor 26574 106802 3324 0 3 0x82 nanoslp syz-executor 78986 430534 3324 0 3 0x82 nanoslp syz-executor 22606 419748 3324 0 3 0x82 nanoslp syz-executor 5333 243606 3324 0 3 0x82 nanoslp syz-executor 17110 184023 3324 0 3 0x82 nanoslp syz-executor 3324 171274 70507 0 2 0x2 syz-executor 70507 380283 19370 0 3 0x10008a sigsusp ksh 19370 241043 78005 0 3 0x98 kqread sshd-session 78005 47926 65794 0 3 0x92 kqread sshd-session 26577 8540 1 0 3 0x100083 ttyopn getty 65794 343704 1 0 3 0x88 kqread sshd 79782 298076 67899 73 3 0x1100090 kqread syslogd 67899 89055 1 0 3 0x100082 sbwait syslogd 73222 276209 1 0 3 0x100080 kqread resolvd 83597 296248 72849 77 3 0x100092 kqread dhcpleased 18535 451236 72849 77 3 0x100092 kqread dhcpleased 72849 485681 1 0 3 0x80 kqread dhcpleased 45230 169623 0 0 3 0x14200 bored smr 44633 224896 0 0 2 0x14200 zerothread 12076 328946 0 0 3 0x14200 aiodoned aiodoned 81709 53269 0 0 3 0x14200 syncer update 74980 289426 0 0 3 0x14200 cleaner cleaner 36989 146078 0 0 3 0x14200 reaper reaper 76236 290097 0 0 3 0x14200 pgdaemon pagedaemon 77265 260403 0 0 3 0x14200 bored viomb 34724 433166 0 0 3 0x40014200 acpi0 acpi0 58700 311719 0 0 3 0x14200 bored softnet3 10431 405865 0 0 3 0x14200 bored softnet2 51295 397945 0 0 3 0x14200 bored softnet1 7021 217143 0 0 3 0x14200 bored softnet0 54461 390929 0 0 3 0x14200 bored systqmp 93008 27801 0 0 3 0x14200 bored systq 58120 348493 0 0 3 0x40014200 tmoslp softclock 86505 512499 0 0 3 0x40014200 idle0 1 447822 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 10227 11266K 12837K 166960K 14069 0 pcb 18 12K 12K 166960K 136 0 rtable 213 7K 9K 166960K 503 0 pf 27 12K 16K 166960K 99 0 ifaddr 35 6K 8K 166960K 83 0 ifgroup 42 1K 2K 166960K 127 0 sysctl 4 1K 9K 166960K 18 0 counters 30 17K 18K 166960K 67 0 ioctlops 0 0K 4K 166960K 197 0 iov 0 0K 16K 166960K 86 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1500 94K 95K 166960K 2651 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 33 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 1031 0 sigio 3 0K 0K 166960K 17 0 proc 60 59K 91K 166960K 638 0 subproc 72 4K 4K 166960K 94 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 121 0 in_multi 79 5K 7K 166960K 143 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 461 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 234 135K 151K 166960K 10817 0 UVM aobj 62 3K 3K 166960K 63 0 pinsyscall 39 78K 94K 166960K 2110 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 64 0 NDP 9 0K 2K 166960K 54 0 temp 65 8686K 8809K 166960K 41568 0 kqueue 14 22K 30K 166960K 166 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 120 197 0 194 3 0 3 3 0 8 2 rtentry 136 152 0 58 5 0 5 5 0 8 0 unpcb 144 976 0 957 6 0 6 6 0 8 5 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 278 0 272 7 0 7 7 0 8 6 arp 88 24 0 9 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 937 0 927 9 0 9 9 0 8 7 pool(inpcb): free list modified: page 0xfffffd8075e1d000; item ordinal 2; addr 0xfffffd8075e1d148 (p 0xfffffd8075e1d000); offset 0x0=0x75e1d3e0 ip6q 72 4 0 2 1 0 1 1 0 8 0 ip6af 40 7 0 5 1 0 1 1 0 8 0 nd6 104 32 0 13 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 0 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 24 0 24 1 0 1 1 0 8 1 pppxif 1384 5 0 5 1 0 1 1 0 8 1 pfrktable 1344 2 0 2 1 0 1 1 0 8 1 pfrule 1344 10 0 10 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 256 665 0 274 32 0 32 32 0 8 5 art_table 32 667 0 274 5 0 5 5 0 8 1 art_node 16 148 0 63 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 6 1 0 1 1 0 8 0 semapl 112 29 0 19 1 0 1 1 0 8 0 shmpl 112 60 0 1 2 0 2 2 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 3240 0 1741 95 0 95 95 0 8 0 ffsino 248 3240 0 1741 95 0 95 95 0 8 0 nchpl 144 4727 0 3037 63 0 63 63 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 uvmvnodes 80 4259 0 0 87 0 87 87 0 8 0 vnodes 216 4259 0 0 237 0 237 237 0 8 0 namei 1024 16357 0 16357 2 0 2 2 0 8 2 kstatmem 264 68 0 50 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 6 0 6 1 0 1 1 0 8 1 scxspl 216 14317 0 14317 8 0 8 8 1 8 8 plimitpl 152 266 0 249 1 0 1 1 0 8 0 sigapl 424 1327 0 1260 8 0 8 8 0 8 0 knotepl 120 36948 0 36900 15 0 15 15 0 8 13 kqueuepl 184 372 0 360 4 0 4 4 0 8 3 pipepl 296 216 0 187 3 0 3 3 0 8 0 fdescpl 440 1289 0 1259 5 0 5 5 0 8 1 filepl 120 8697 0 8415 14 0 14 14 0 8 5 lockfpl 104 630 0 628 2 0 2 2 0 8 1 lockfspl 48 233 0 231 1 0 1 1 0 8 0 sessionpl 144 24 0 16 1 0 1 1 0 8 0 pgrppl 48 74 0 58 1 0 1 1 0 8 0 ucredpl 104 1250 0 1236 1 0 1 1 0 8 0 zombiepl 144 1261 0 1260 1 0 1 1 0 8 0 processpl 1160 1327 0 1260 5 0 5 5 0 8 0 procpl 656 2639 0 2561 8 0 8 8 0 8 0 sosppl 168 5 0 5 1 0 1 1 0 8 1 sockpl 528 2231 0 2198 12 2 10 12 0 8 7 mcl64k 65536 24 0 23 1 0 1 1 0 8 0 mcl16k 16384 5 0 5 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 10 0 10 1 0 1 1 0 8 1 mcl4k 4096 3599 0 3547 13 0 13 13 0 8 6 mcl2k 2048 1164 0 1161 3 0 3 3 0 8 1 mtagpl 96 194 0 128 4 0 4 4 0 8 1 mbufpl 256 15194 0 14993 80 55 25 80 0 8 8 bufpl 280 4140 0 120 288 0 288 288 0 8 0 anonpl 24 205488 0 202181 50 0 50 50 0 187 18 amapchunkpl 152 37550 0 37037 35 0 35 35 0 158 14 amappl16 200 3394 0 3360 15 5 10 15 0 8 7 amappl15 192 3 0 3 1 0 1 1 0 8 1 amappl14 184 109 0 99 1 0 1 1 0 8 0 amappl13 176 26 0 25 1 0 1 1 0 8 0 amappl12 168 1931 0 1900 3 0 3 3 0 8 1 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 0 1 1 0 8 1 amappl9 144 268 0 268 1 0 1 1 0 8 1 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 105 0 94 1 0 1 1 0 8 0 amappl6 120 215 0 212 1 0 1 1 0 8 0 amappl5 112 122 0 116 1 0 1 1 0 8 0 amappl4 104 298 0 282 1 0 1 1 0 8 0 amappl3 96 7079 0 6959 4 0 4 4 0 8 0 amappl2 88 647 0 592 2 0 2 2 0 8 0 amappl1 80 11766 0 11211 13 0 13 13 0 8 0 amappl 88 9960 0 9788 5 0 5 5 0 92 1 dma8192 8192 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 2 0 2 1 0 1 1 0 8 1 dma256 256 7 0 7 1 0 1 1 0 8 1 dma128 128 256 0 256 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 62 0 1 2 0 2 2 0 8 0 uaddrrnd 24 1289 0 1259 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1289 0 1259 1 0 1 1 0 8 0 vmmpekpl 168 10952 0 10911 3 0 3 3 0 8 0 vmmpepl 168 84180 0 82253 92 0 92 92 0 357 7 vmsppl 360 1288 0 1259 4 0 4 4 0 8 1 rwobjpl 32 26887 0 21698 42 0 42 42 0 8 0 pdppl 4096 2584 0 2518 100 34 66 80 0 8 0 pvpl 32 574219 0 564800 123 0 123 123 0 265 33 pmappl 216 1288 0 1259 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 347 0 89 9 0 9 9 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_pcb_iterator(ffffffff8396b598,fffffd8075e1d3d8,ffff80003c94b358) at in_pcb_iterator+0x12b sys/netinet/in_pcb.c:699 sysctl_file(ffff80003c94b658,4,0,ffff80003c94b688,ffff80002a777718) at sysctl_file+0xc57 sys/kern/kern_sysctl.c:-1 kern_sysctl(ffff80003c94b654,5,0,ffff80003c94b688,0,0,2660f91ce7551217) at kern_sysctl+0x167 sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002a777718,ffff80003c94b7c0,ffff80003c94b710) at sys_sysctl+0x3f2 sys/kern/kern_sysctl.c:-1 syscall(ffff80003c94b7c0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c94b7c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd3a1b29eb0, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace in_pcb_iterator(ffffffff8396b598,fffffd8075e1d3d8,ffff80003c94b358) at in_pcb_iterator+0x12b sys/netinet/in_pcb.c:699 sysctl_file(ffff80003c94b658,4,0,ffff80003c94b688,ffff80002a777718) at sysctl_file+0xc57 sys/kern/kern_sysctl.c:-1 kern_sysctl(ffff80003c94b654,5,0,ffff80003c94b688,0,0,2660f91ce7551217) at kern_sysctl+0x167 sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002a777718,ffff80003c94b7c0,ffff80003c94b710) at sys_sysctl+0x3f2 sys/kern/kern_sysctl.c:-1 syscall(ffff80003c94b7c0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c94b7c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd3a1b29eb0, count: -6