uvm_fault(0xffffffff828abf90, 0xfffffd0000000008, 0, 1) -> e kernel: page fault trap, code=0 Stopped at soreceive+0x1110: cmpq $0,0x8(%rbx) ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff828abf90, 0xfffffd0000000008, 0, 1) -> e soreceive(fffffd806f686320,0,ffff800020e1d118,0,0,ffff800020e1d024) at soreceive+0x1110 sbsync sys/kern/uipc_socket.c:675 [inline] soreceive(fffffd806f686320,0,ffff800020e1d118,0,0,ffff800020e1d024) at soreceive+0x1110 sys/kern/uipc_socket.c:855 end trace frame: 0xffff800020e1d060, count: 0 ddb{1}> trace soreceive(fffffd806f686320,0,ffff800020e1d118,0,0,ffff800020e1d024) at soreceive+0x1110 sbsync sys/kern/uipc_socket.c:675 [inline] soreceive(fffffd806f686320,0,ffff800020e1d118,0,0,ffff800020e1d024) at soreceive+0x1110 sys/kern/uipc_socket.c:855 soo_read(fffffd80731f6260,ffff800020e1d118,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc758,6,ffff800020e1d118,0,ffff800020e1d200) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc758,ffff800020e1d1b0,ffff800020e1d200) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1d280) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1d280) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc3b00, count: -6 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800020e1d000 rbx 0xfffffd0000000000 rdx 0x36f16 acpi_pdirpa+0x22d7e rcx 0 rax 0 r8 0xffffffff81465a61 soreceive+0x5c1 r9 0x3 r10 0xb45e676f45959e4f r11 0xd54b99f4c57512cc r12 0x4ae r13 0 r14 0 r15 0xfffffd806f686320 rip 0xffffffff814665b0 soreceive+0x1110 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800020e1cf10 ss 0x10 soreceive+0x1110: cmpq $0,0x8(%rbx) ddb{1}> show proc PROC (dhclient) pid=248808 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddd5f8,0xffff800020ddc288 process=0xffff800020df0b98 user=0xffff800020e18000, vmspace=0xfffffd807efff170 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 48301 107206 49995 0 7 0x100002 sh 49995 499157 25463 0 3 0x82 wait syz-executor.0 16552 96857 0 0 3 0x14200 acct acct 78407 309133 25463 0 3 0x82 piperd syz-executor.1 63811 292567 0 0 3 0x14200 bored sosplice 25463 334583 72425 0 3 0x82 thrsleep syz-fuzzer 25463 133919 72425 0 3 0x4000082 nanosleep syz-fuzzer 25463 102722 72425 0 3 0x4000082 thrsleep syz-fuzzer 25463 291408 72425 0 3 0x4000082 thrsleep syz-fuzzer 25463 314477 72425 0 3 0x4000082 thrsleep syz-fuzzer 25463 88371 72425 0 3 0x4000082 thrsleep syz-fuzzer 25463 499240 72425 0 3 0x4000082 thrsleep syz-fuzzer 25463 76275 72425 0 3 0x4000082 thrsleep syz-fuzzer 25463 340338 72425 0 3 0x4000082 thrsleep syz-fuzzer 25463 30260 72425 0 3 0x4000082 kqread syz-fuzzer 72425 7275 24155 0 3 0x10008a pause ksh 24155 248667 98317 0 3 0x92 select sshd 95228 155260 1 0 3 0x100083 ttyin getty 98317 388727 1 0 3 0x80 select sshd 73796 440895 36905 74 3 0x100092 bpf pflogd 36905 161272 1 0 3 0x80 netio pflogd 90136 197943 52830 73 3 0x100090 kqread syslogd 52830 1050 1 0 3 0x100082 netio syslogd 28788 302217 1 77 3 0x100090 poll dhclient *90635 248808 1 0 7 0 dhclient 43612 293466 0 0 3 0x14200 bored smr 93731 108684 0 0 2 0x14200 zerothread 46353 500670 0 0 3 0x14200 aiodoned aiodoned 60942 387099 0 0 3 0x14200 syncer update 89509 64941 0 0 3 0x14200 cleaner cleaner 38369 336400 0 0 3 0x14200 reaper reaper 32735 315198 0 0 3 0x14200 pgdaemon pagedaemon 52365 30094 0 0 3 0x14200 bored crynlk 46304 379410 0 0 3 0x14200 bored crypto 72438 191578 0 0 3 0x40014200 acpi0 acpi0 7690 125442 0 0 3 0x40014200 idle1 79816 370902 0 0 3 0x14200 bored softnet 47102 366235 0 0 3 0x14200 bored systqmp 88483 10571 0 0 3 0x14200 bored systq 74300 415581 0 0 3 0x40014200 bored softclock 71430 287211 0 0 3 0x40014200 idle0 1 27385 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 90635 (dhclient) thread 0xffff800020ddc758 (248808) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828c68b0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 solock+0x66 sys/kern/uipc_socket2.c:292 #2 soreceive+0x114 sys/kern/uipc_socket.c:737 #3 soo_read+0x53 sys/kern/sys_socket.c:70 #4 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #5 sys_read+0x83 sys/kern/sys_generic.c:157 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9531 6420K 6924K 78643K 11393 0 pcb 13 8K 8K 78643K 114 0 rtable 58 3K 7K 78643K 701 0 ifaddr 70 13K 14K 78643K 263 0 counters 41 33K 34K 78643K 63 0 ioctlops 0 0K 4K 78643K 1568 0 iov 0 0K 16K 78643K 112 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 77K 78643K 1575 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 168 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 1096 0 sigio 0 0K 0K 78643K 10 0 proc 61 63K 95K 78643K 590 0 subproc 32 2K 2K 78643K 85 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 53 0 in_multi 23 1K 3K 78643K 289 0 ether_multi 1 0K 0K 78643K 17 0 mrt 0 0K 0K 78643K 14 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 286 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 136 104K 105K 78643K 4419 0 UVM aobj 22 2K 2K 78643K 24 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 84 0 NDP 13 0K 0K 78643K 67 0 temp 117 3867K 3931K 78643K 7943 0 kqueue 3 4K 12K 78643K 56 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 11 0 9 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 61 0 59 1 0 1 1 0 8 0 rtentry 112 134 0 117 2 1 1 2 0 8 0 unpcb 120 501 0 491 1 0 1 1 0 8 0 syncache 264 11 0 11 5 5 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 450 0 450 2 2 0 1 0 8 0 tcpcb 544 864 0 859 1 0 1 1 0 8 0 inpcb 296 2214 0 2206 5 3 2 2 0 8 1 rttmr 72 8 0 8 3 3 0 1 0 8 0 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 54 0 53 2 1 1 1 0 8 0 pkpcb 40 8 0 8 2 2 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 8 0 8 4 4 0 1 0 482 0 pffrnode 88 8 0 8 4 4 0 1 0 8 0 pffrent 40 20 0 20 4 4 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 75 0 72 5 4 1 1 0 8 0 pftag 88 3 0 2 1 0 1 1 0 8 0 pfqueue 264 1 0 0 1 0 1 1 0 8 0 pfstitem 24 29 0 21 1 0 1 1 0 8 0 pfstkey 112 33 0 25 1 0 1 1 0 8 0 pfstate 328 31 0 23 3 0 3 3 0 8 0 pfrule 1360 36 0 30 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 440 0 357 15 6 9 14 0 8 2 art_table 32 441 0 357 2 0 2 2 0 8 0 art_node 16 133 0 120 1 0 1 1 0 8 0 sysvmsgpl 40 31 0 17 2 1 1 1 0 8 0 semupl 112 12 0 12 3 3 0 1 0 8 0 semapl 112 166 0 156 1 0 1 1 0 8 0 shmpl 112 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2695 0 1290 89 0 89 89 0 8 0 ffsino 272 2695 0 1290 96 1 95 95 0 8 0 nchpl 144 4250 0 2652 60 0 60 60 0 8 0 uvmvnodes 72 2995 0 0 55 0 55 55 0 8 0 vnodes 208 2995 0 0 158 0 158 158 0 8 0 namei 1024 11335 0 11335 5 4 1 1 0 8 1 percpumem 16 42 0 11 1 0 1 1 0 8 0 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 560 7 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 24 0 22 4 3 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 12520 0 12520 11 10 1 7 0 8 1 plimitpl 152 62 0 54 1 0 1 1 0 8 0 sigapl 424 1304 0 1271 4 0 4 4 0 8 0 futexpl 56 15739 0 15739 4 3 1 1 0 8 1 knotepl 112 161 0 140 1 0 1 1 0 8 0 kqueuepl 144 489 0 485 1 0 1 1 0 8 0 pipepl 304 210 0 200 4 3 1 2 0 8 0 fdescpl 496 1287 0 1271 3 0 3 3 0 8 0 filepl 152 7352 0 7252 8 3 5 6 0 8 1 lockfpl 104 99 0 98 1 0 1 1 0 8 0 lockfspl 48 40 0 39 1 0 1 1 0 8 0 sessionpl 112 21 0 10 1 0 1 1 0 8 0 pgrppl 48 23 0 12 1 0 1 1 0 8 0 ucredpl 96 492 0 482 1 0 1 1 0 8 0 zombiepl 144 1271 0 1271 2 1 1 1 0 8 1 processpl 984 1304 0 1271 6 1 5 5 0 8 0 procpl 624 3506 0 3464 4 0 4 4 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 10 0 10 3 3 0 1 0 8 0 sockpl 400 2785 0 2765 10 5 5 6 0 8 2 mcl64k 65536 16 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 160 0 0 19 0 19 19 0 8 0 mtagpl 96 25 0 0 1 0 1 1 0 8 0 mbufpl 256 446 0 0 27 0 27 27 0 8 0 bufpl 280 5141 0 135 358 0 358 358 0 8 0 anonpl 16 127538 0 115186 101 18 83 83 0 124 15 amapchunkpl 152 7991 0 7843 36 25 11 20 0 158 3 amappl16 192 5549 0 4662 69 16 53 57 0 8 8 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 157 0 147 1 0 1 1 0 8 0 amappl13 168 297 0 293 1 0 1 1 0 8 0 amappl12 160 676 0 675 1 0 1 1 0 8 0 amappl11 152 185 0 169 1 0 1 1 0 8 0 amappl10 144 19 0 13 1 0 1 1 0 8 0 amappl9 136 535 0 533 1 0 1 1 0 8 0 amappl8 128 648 0 616 2 0 2 2 0 8 0 amappl7 120 133 0 119 1 0 1 1 0 8 0 amappl6 112 144 0 140 1 0 1 1 0 8 0 amappl5 104 1662 0 1645 1 0 1 1 0 8 0 amappl4 96 639 0 609 1 0 1 1 0 8 0 amappl3 88 132 0 127 1 0 1 1 0 8 0 amappl2 80 9452 0 9389 2 0 2 2 0 8 0 amappl1 72 36826 0 36385 23 13 10 18 0 8 0 amappl 80 3812 0 3763 2 0 2 2 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 23 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1294 0 1271 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1294 0 1271 1 0 1 1 0 8 0 vmmpekpl 168 13040 0 13000 2 0 2 2 0 8 0 vmmpepl 168 162953 0 160981 189 64 125 125 0 357 33 vmsppl 368 1293 0 1271 3 0 3 3 0 8 0 pdppl 4096 2595 0 2549 8 1 7 7 0 8 0 pvpl 32 369359 0 353836 233 36 197 197 0 265 35 pmappl 232 1293 0 1271 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 291 0 20 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82766ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828c66a8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c66a8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff828c66a8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c66a8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 pageflttrap(ffff800024134f60,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800024134f60) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffffb270, count: -10 ddb{0}> machine ddbcpu 1 Stopped at soreceive+0x1110: cmpq $0,0x8(%rbx) ddb{1}> trace soreceive(fffffd806f686320,0,ffff800020e1d118,0,0,ffff800020e1d024) at soreceive+0x1110 sbsync sys/kern/uipc_socket.c:675 [inline] soreceive(fffffd806f686320,0,ffff800020e1d118,0,0,ffff800020e1d024) at soreceive+0x1110 sys/kern/uipc_socket.c:855 soo_read(fffffd80731f6260,ffff800020e1d118,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc758,6,ffff800020e1d118,0,ffff800020e1d200) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc758,ffff800020e1d1b0,ffff800020e1d200) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1d280) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1d280) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc3b00, count: -6