uvm_fault(0xffffffff827df520, 0xfffffd0000000008, 0, 2) -> e kernel: page fault trap, code=0 Stopped at soreceive+0xdcd: movq %rbx,0x8(%r12) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff827df520, 0xfffffd0000000008, 0, 2) -> e soreceive(fffffd806f689320,0,ffff800020e1cdf8,0,0,ffff800020e1cd04) at soreceive+0xdcd sys/kern/uipc_socket.c:985 end trace frame: 0xffff800020e1cd40, count: 0 ddb{0}> trace soreceive(fffffd806f689320,0,ffff800020e1cdf8,0,0,ffff800020e1cd04) at soreceive+0xdcd sys/kern/uipc_socket.c:985 soo_read(fffffd80791f64c0,ffff800020e1cdf8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddcc38,6,ffff800020e1cdf8,0,ffff800020e1cee0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddcc38,ffff800020e1ce90,ffff800020e1cee0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1cf60) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1cf60) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe27b0, count: -6 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020e1cce0 rbx 0xfffffd8068048200 rdx 0x5cc2a acpi_pdirpa+0x48a92 rcx 0 rax 0xfffffd806f689320 r8 0xffffffff818e2276 soreceive+0xbe6 r9 0x3 r10 0xe245500bd94a6b73 r11 0x13e8797b51905b95 r12 0xfffffd0000000000 r13 0 r14 0x1 r15 0 rip 0xffffffff818e245d soreceive+0xdcd cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800020e1cbf0 ss 0x10 soreceive+0xdcd: movq %rbx,0x8(%r12) ddb{0}> show proc PROC (dhclient) pid=207125 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddc4e8,0xffff800020ddd128 process=0xffff800020df03e8 user=0xffff800020e18000, vmspace=0xfffffd807efff170 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 21898 149524 2226 0 2 0 syz-executor.0 21898 463177 2226 0 3 0x4000080 fsleep syz-executor.0 48690 309512 0 0 3 0x14200 bored sosplice 17230 466888 57864 0 3 0x82 piperd syz-executor.1 2226 395717 57864 0 7 0x482 syz-executor.0 57864 192718 57825 0 3 0x82 thrsleep syz-fuzzer 57864 374172 57825 0 3 0x4000082 nanosleep syz-fuzzer 57864 518702 57825 0 3 0x4000082 thrsleep syz-fuzzer 57864 474964 57825 0 3 0x4000082 thrsleep syz-fuzzer 57864 288625 57825 0 2 0x4000002 syz-fuzzer 57864 200721 57825 0 3 0x4000082 kqread syz-fuzzer 57864 458050 57825 0 3 0x4000082 thrsleep syz-fuzzer 57864 212643 57825 0 3 0x4000082 thrsleep syz-fuzzer 57864 194422 57825 0 3 0x4000082 thrsleep syz-fuzzer 57864 335018 57825 0 3 0x4000082 thrsleep syz-fuzzer 57825 77293 90849 0 3 0x10008a pause ksh 90849 151872 87621 0 3 0x92 select sshd 57531 179900 1 0 3 0x100083 ttyin getty 87621 183664 1 0 3 0x80 select sshd 79299 336447 84979 74 3 0x100092 bpf pflogd 84979 253918 1 0 3 0x80 netio pflogd 60349 87291 23696 73 3 0x100090 kqread syslogd 23696 201701 1 0 3 0x100082 netio syslogd 45810 301198 1 77 3 0x100090 poll dhclient *70342 207125 1 0 7 0 dhclient 2026 475739 0 0 3 0x14200 bored smr 93268 213042 0 0 2 0x14200 zerothread 8109 118908 0 0 3 0x14200 aiodoned aiodoned 86363 187279 0 0 3 0x14200 syncer update 63946 10982 0 0 3 0x14200 cleaner cleaner 74559 99089 0 0 3 0x14200 reaper reaper 99588 250339 0 0 3 0x14200 pgdaemon pagedaemon 40269 269303 0 0 3 0x14200 bored crynlk 67666 203940 0 0 3 0x14200 bored crypto 61513 101140 0 0 3 0x40014200 acpi0 acpi0 18220 342078 0 0 3 0x40014200 idle1 61362 151164 0 0 3 0x14200 bored softnet 9919 302450 0 0 3 0x14200 bored systqmp 11218 483666 0 0 3 0x14200 bored systq 50541 108912 0 0 3 0x40014200 bored softclock 85261 257045 0 0 3 0x40014200 idle0 1 322466 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 70342 (dhclient) thread 0xffff800020ddcc38 (207125) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82910c50) #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+0xb3a sys/kern/uipc_socket.c:956 #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9531 6428K 6751K 78643K 11843 0 pcb 13 8K 8K 78643K 101 0 rtable 82 4K 8K 78643K 574 0 ifaddr 87 17K 18K 78643K 240 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 91 0 ioctlops 0 0K 4K 78643K 1547 0 iov 0 0K 16K 78643K 70 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1460 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 88 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 583 0 sigio 0 0K 0K 78643K 22 0 proc 61 63K 83K 78643K 478 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 46 0 in_multi 62 3K 3K 78643K 213 0 ether_multi 1 0K 0K 78643K 12 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 271 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 123 71K 71K 78643K 2863 0 UVM aobj 20 2K 2K 78643K 20 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 78 0 NDP 13 0K 0K 78643K 60 0 temp 125 3866K 3930K 78643K 5885 0 kqueue 3 4K 12K 78643K 43 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 8 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 37 0 35 1 0 1 1 0 8 0 rtentry 112 109 0 82 2 0 2 2 0 8 0 unpcb 120 408 0 396 1 0 1 1 0 8 0 syncache 264 11 0 11 4 4 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 544 196 0 191 1 0 1 1 0 8 0 inpcb 296 672 0 662 3 2 1 2 0 8 0 nd6 48 27 0 26 1 0 1 1 0 8 0 ppxss 1128 3 0 3 2 2 0 1 0 8 0 pfstscr 40 2 0 1 1 0 1 1 0 8 0 pffrag 232 4 0 4 2 1 1 1 0 482 1 pffrnode 88 4 0 4 2 1 1 1 0 8 1 pffrent 40 139 0 139 3 2 1 1 0 8 1 pfosfp 40 848 0 423 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 32 0 28 1 0 1 1 0 8 0 pfstitem 24 25 0 13 1 0 1 1 0 8 0 pfstkey 112 27 0 15 1 0 1 1 0 8 0 pfstate 328 25 0 14 2 0 2 2 0 8 0 pfrule 1360 33 0 20 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 508 0 403 13 4 9 13 0 8 0 art_table 32 509 0 403 2 0 2 2 0 8 0 art_node 16 108 0 85 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 14 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 82 0 72 1 0 1 1 0 8 0 shmpl 112 18 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2205 0 799 92 3 89 89 0 8 1 ffsino 272 2205 0 799 94 0 94 94 0 8 0 nchpl 144 3192 0 1583 60 0 60 60 0 8 0 uvmvnodes 72 2411 0 0 44 0 44 44 0 8 0 vnodes 208 2411 0 0 127 0 127 127 0 8 0 namei 1024 10561 0 10561 2 1 1 1 0 8 1 percpumem 16 56 0 24 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 8 0 3 2 1 1 1 0 8 0 pfiaddrpl 120 12 0 8 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 9232 0 9232 10 9 1 7 0 8 1 plimitpl 152 60 0 52 1 0 1 1 0 8 0 sigapl 424 799 0 767 4 0 4 4 0 8 0 futexpl 56 10829 0 10828 2 1 1 1 0 8 0 knotepl 112 102 0 83 1 0 1 1 0 8 0 kqueuepl 144 118 0 115 1 0 1 1 0 8 0 pipelkpl 48 183 0 173 1 0 1 1 0 8 0 pipepl 120 366 0 347 2 1 1 2 0 8 0 fdescpl 496 783 0 767 3 0 3 3 0 8 0 filepl 152 6069 0 5964 6 1 5 6 0 8 0 lockfpl 104 143 0 142 1 0 1 1 0 8 0 lockfspl 48 52 0 51 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 516 0 507 1 0 1 1 0 8 0 zombiepl 144 767 0 767 1 0 1 1 0 8 1 processpl 984 799 0 767 5 0 5 5 0 8 0 procpl 624 2076 0 2034 4 0 4 4 0 8 0 sosppl 128 8 0 8 2 1 1 1 0 8 1 sockpl 400 1117 0 1093 8 5 3 4 0 8 0 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 184 0 0 22 0 22 22 0 8 0 mtagpl 96 55 0 0 2 0 2 2 0 8 0 mbufpl 256 485 0 0 28 0 28 28 0 8 0 bufpl 280 4295 0 135 298 0 298 298 0 8 0 anonpl 16 78022 0 61339 75 5 70 70 0 124 3 amapchunkpl 152 4571 0 4422 23 16 7 20 0 158 0 amappl16 192 3388 0 2489 51 4 47 47 0 8 2 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 205 0 199 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 186 0 184 2 1 1 1 0 8 0 amappl11 152 60 0 44 1 0 1 1 0 8 0 amappl10 144 391 0 381 1 0 1 1 0 8 0 amappl9 136 385 0 384 1 0 1 1 0 8 0 amappl8 128 358 0 326 2 0 2 2 0 8 0 amappl7 120 120 0 107 1 0 1 1 0 8 0 amappl6 112 29 0 24 1 0 1 1 0 8 0 amappl5 104 506 0 490 1 0 1 1 0 8 0 amappl4 96 666 0 634 1 0 1 1 0 8 0 amappl3 88 312 0 306 1 0 1 1 0 8 0 amappl2 80 5316 0 5246 2 0 2 2 0 8 0 amappl1 72 26626 0 26181 23 13 10 18 0 8 0 amappl 80 2327 0 2280 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 19 0 0 1 0 1 1 0 8 0 uaddrrnd 24 791 0 770 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 791 0 770 1 0 1 1 0 8 0 vmmpekpl 168 10361 0 10325 2 0 2 2 0 8 0 vmmpepl 168 100887 0 98822 120 28 92 113 0 357 1 vmsppl 368 790 0 770 2 0 2 2 0 8 0 pdppl 4096 1589 0 1545 7 1 6 6 0 8 0 pvpl 32 252324 0 232504 179 10 169 169 0 265 9 pmappl 232 790 0 770 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 288 0 17 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace soreceive(fffffd806f689320,0,ffff800020e1cdf8,0,0,ffff800020e1cd04) at soreceive+0xdcd sys/kern/uipc_socket.c:985 soo_read(fffffd80791f64c0,ffff800020e1cdf8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddcc38,6,ffff800020e1cdf8,0,ffff800020e1cee0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddcc38,ffff800020e1ce90,ffff800020e1cee0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1cf60) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1cf60) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe27b0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp