login: uvm_fault(0xffffffff82508e50, 0xfffffd0000000008, 0, 1) -> e kernel: page fault trap, code=0 Stopped at soreceive+0x10f0: cmpq $0,0x8(%rbx) ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xffffffff82508e50, 0xfffffd0000000008, 0, 1) -> e soreceive(fffffd805e571320,0,ffff80001d371e08,0,0,ffff80001d371d14) at soreceive+0x10f0 sbsync sys/kern/uipc_socket.c:669 [inline] soreceive(fffffd805e571320,0,ffff80001d371e08,0,0,ffff80001d371d14) at soreceive+0x10f0 sys/kern/uipc_socket.c:849 end trace frame: 0xffff80001d371d50, count: 0 ddb> trace soreceive(fffffd805e571320,0,ffff80001d371e08,0,0,ffff80001d371d14) at soreceive+0x10f0 sbsync sys/kern/uipc_socket.c:669 [inline] soreceive(fffffd805e571320,0,ffff80001d371e08,0,0,ffff80001d371d14) at soreceive+0x10f0 sys/kern/uipc_socket.c:849 soo_read(fffffd80637f2438,ffff80001d371e08,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d339008,6,ffff80001d371e08,0,ffff80001d371ef0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d339008,ffff80001d371ea0,ffff80001d371ef0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d371f70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8aa0, count: -6 ddb> show registers rdi 0 rsi 0 rbp 0xffff80001d371cf0 rbx 0xfffffd0000000000 rdx 0xffffffff825a8cb8 mbpool+0x38 rcx 0xffffffff825a8cb0 mbpool+0x30 rax 0 r8 0 r9 0x3 r10 0xe475b8a037ba254b r11 0x3885e115ed84d5e9 r12 0xc60 r13 0 r14 0 r15 0xfffffd805e571320 rip 0xffffffff814dac30 soreceive+0x10f0 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff80001d371c00 ss 0x10 soreceive+0x10f0: cmpq $0,0x8(%rbx) ddb> show proc PROC (dhclient) pid=53710 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d33a388,0xffff80001d339288 process=0xffff8000ffffa710 user=0xffff80001d36d000, vmspace=0xfffffd806bc0a330 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 43376 24942 43719 0 3 0x82 wait syz-execprog 43376 214171 43719 0 3 0x4000082 thrsleep syz-execprog 43376 51063 43719 0 3 0x4000082 thrsleep syz-execprog 43376 399888 43719 0 3 0x4000082 thrsleep syz-execprog 43376 523612 43719 0 3 0x4000082 thrsleep syz-execprog 43376 73254 43719 0 3 0x4000082 kqread syz-execprog 43376 521220 43719 0 3 0x4000082 thrsleep syz-execprog 43719 364349 67300 0 3 0x10008a pause ksh 67300 329608 27917 0 3 0x92 select sshd 28528 510451 1 0 3 0x100083 ttyin getty 27917 396424 1 0 3 0x80 select sshd 34909 297001 99085 73 3 0x100090 kqread syslogd 99085 110270 1 0 3 0x100082 netio syslogd 94550 274664 1 77 2 0x100010 dhclient *11791 53710 1 0 7 0 dhclient 41461 65137 0 0 3 0x14200 bored smr 78357 444259 0 0 3 0x14200 pgzero zerothread 10895 71539 0 0 3 0x14200 aiodoned aiodoned 59983 275230 0 0 3 0x14200 syncer update 12719 264497 0 0 3 0x14200 cleaner cleaner 99700 154439 0 0 3 0x14200 reaper reaper 62149 338019 0 0 3 0x14200 pgdaemon pagedaemon 8663 383186 0 0 3 0x14200 bored crynlk 92193 226618 0 0 3 0x14200 bored crypto 93792 520527 0 0 3 0x40014200 acpi0 acpi0 92511 455289 0 0 2 0x14200 softnet 35025 248780 0 0 2 0x14200 systqmp 2016 354563 0 0 3 0x14200 bored systq 74053 146871 0 0 3 0x40014200 bored softclock 54629 107596 0 0 3 0x40014200 idle0 1 82874 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 9441 6321K 6321K 78643K 10540 0 pcb 13 8K 8K 78643K 13 0 rtable 61 1K 2K 78643K 155 0 ifaddr 24 7K 9K 78643K 33 0 counters 19 16K 16K 78643K 20 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1182 74K 74K 78643K 1187 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 2 4K 12K 78643K 18 0 proc 47 38K 54K 78643K 318 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 1K 78643K 22 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 19 95K 95K 78643K 19 0 exec 0 0K 1K 78643K 171 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 69 11K 12K 78643K 857 0 UVM aobj 2 2K 2K 78643K 2 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 3 0K 0K 78643K 6 0 temp 18 3005K 3069K 78643K 1665 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 4 0 2 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 12 1 0 1 1 0 8 0 unpcb 120 27 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 1 0 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 27 0 21 1 0 1 1 0 8 0 nd6 48 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 145 0 0 10 0 10 10 0 8 0 art_table 32 146 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1414 0 20 45 0 45 45 0 8 0 ffsino 240 1414 0 20 83 0 83 83 0 8 1 nchpl 144 1639 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1423 0 0 26 0 26 26 0 8 0 vnodes 208 1423 0 0 75 0 75 75 0 8 0 namei 1024 3833 0 3833 1 0 1 1 0 8 1 scxspl 192 4328 0 4328 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 424 212 0 186 4 0 4 4 0 8 0 knotepl 112 39 0 30 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 16 67 0 61 1 0 1 1 0 8 0 pipepl 120 134 0 123 1 0 1 1 0 8 0 fdescpl 432 198 0 186 2 0 2 2 0 8 0 filepl 120 964 0 913 2 0 2 2 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 112 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 47 0 40 1 0 1 1 0 8 0 zombiepl 144 187 0 186 1 0 1 1 0 8 0 processpl 896 212 0 186 4 0 4 4 0 8 0 procpl 624 218 0 186 3 0 3 3 0 8 0 sockpl 400 71 0 55 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5515 0 5482 8 2 6 8 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9563 0 9477 9 2 7 7 0 8 0 bufpl 280 3647 0 161 249 0 249 249 0 8 0 anonpl 16 21055 0 19602 14 1 13 13 0 107 6 amapchunkpl 152 836 0 775 5 0 5 5 0 158 2 amappl16 192 126 0 101 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 2 0 1 2 1 1 1 0 8 0 amappl13 168 26 0 24 1 0 1 1 0 8 0 amappl12 160 11 0 8 1 0 1 1 0 8 0 amappl11 152 62 0 50 1 0 1 1 0 8 0 amappl10 144 12 0 7 1 0 1 1 0 8 0 amappl9 136 223 0 220 1 0 1 1 0 8 0 amappl8 128 235 0 227 1 0 1 1 0 8 0 amappl7 120 103 0 94 1 0 1 1 0 8 0 amappl6 112 21 0 19 1 0 1 1 0 8 0 amappl5 104 134 0 124 1 0 1 1 0 8 0 amappl4 96 444 0 418 1 0 1 1 0 8 0 amappl3 88 111 0 105 1 0 1 1 0 8 0 amappl2 80 819 0 766 3 0 3 3 0 8 1 amappl1 72 13424 0 13038 27 7 20 20 0 8 11 amappl 80 436 0 411 1 0 1 1 0 84 0 dma4096 4096 1 0 1 1 1 0 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 64 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 198 0 186 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 198 0 186 1 0 1 1 0 8 0 vmmpekpl 168 6028 0 6008 1 0 1 1 0 8 0 vmmpepl 168 29015 0 28180 84 7 77 77 0 357 39 vmsppl 272 197 0 186 1 0 1 1 0 8 0 pdppl 4096 402 0 372 5 0 5 5 0 8 0 pvpl 32 104054 0 100377 113 0 113 113 0 265 81 pmappl 200 197 0 186 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 130 0 6 4 0 4 4 0 8 0 ddb>