uvm_fault(0xffffffff827cff50, 0xfffffd0000000008, 0, 1) -> e kernel: page fault trap, code=0 Stopped at soreceive+0x1110: cmpq $0,0x8(%rbx) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff827cff50, 0xfffffd0000000008, 0, 1) -> e soreceive(fffffd806f680000,0,ffff800020e1d028,0,0,ffff800020e1cf34) at soreceive+0x1110 sbsync sys/kern/uipc_socket.c:675 [inline] soreceive(fffffd806f680000,0,ffff800020e1d028,0,0,ffff800020e1cf34) at soreceive+0x1110 sys/kern/uipc_socket.c:855 end trace frame: 0xffff800020e1cf70, count: 0 ddb{0}> trace soreceive(fffffd806f680000,0,ffff800020e1d028,0,0,ffff800020e1cf34) at soreceive+0x1110 sbsync sys/kern/uipc_socket.c:675 [inline] soreceive(fffffd806f680000,0,ffff800020e1d028,0,0,ffff800020e1cf34) at soreceive+0x1110 sys/kern/uipc_socket.c:855 soo_read(fffffd807cdf7260,ffff800020e1d028,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc278,6,ffff800020e1d028,0,ffff800020e1d110) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc278,ffff800020e1d0c0,ffff800020e1d110) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1d190) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1d190) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffa8c0, count: -6 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020e1cf10 rbx 0xfffffd0000000000 rdx 0x60fdc acpi_pdirpa+0x4ce44 rcx 0 rax 0 r8 0xffffffff81771bc1 soreceive+0x5c1 r9 0x3 r10 0xfd737fb55f58781e r11 0x509d76b3698d2c06 r12 0x48a r13 0 r14 0 r15 0xfffffd806f680000 rip 0xffffffff81772710 soreceive+0x1110 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800020e1ce20 ss 0x10 soreceive+0x1110: cmpq $0,0x8(%rbx) ddb{0}> show proc PROC (dhclient) pid=354956 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddd118,0xffff800020ddc4f8 process=0xffff800020df07c0 user=0xffff800020e18000, vmspace=0xfffffd807f0002e0 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 33313 237972 46469 0 2 0 syz-executor.1 33313 519250 46469 0 3 0x4000080 fsleep syz-executor.1 30766 191745 38575 0 2 0 syz-executor.0 30766 4466 38575 0 3 0x4000080 fsleep syz-executor.0 30766 168808 38575 0 2 0x4000000 syz-executor.0 46469 514227 86480 0 2 0x482 syz-executor.1 38575 8950 86480 0 7 0x482 syz-executor.0 86480 126137 28095 0 3 0x82 thrsleep syz-fuzzer 86480 139115 28095 0 3 0x4000082 thrsleep syz-fuzzer 86480 478659 28095 0 3 0x4000082 thrsleep syz-fuzzer 86480 133563 28095 0 3 0x4000082 thrsleep syz-fuzzer 86480 475723 28095 0 3 0x4000082 thrsleep syz-fuzzer 86480 500698 28095 0 3 0x4000082 kqread syz-fuzzer 86480 302811 28095 0 3 0x4000082 thrsleep syz-fuzzer 86480 20473 28095 0 3 0x4000082 thrsleep syz-fuzzer 86480 422646 28095 0 3 0x4000082 thrsleep syz-fuzzer 86480 511135 28095 0 3 0x4000082 thrsleep syz-fuzzer 28095 294244 32988 0 3 0x10008a pause ksh 32988 211293 71879 0 3 0x92 select sshd 55839 49602 1 0 3 0x100083 ttyin getty 71879 45075 1 0 3 0x80 select sshd 20298 231212 99504 74 3 0x100092 bpf pflogd 99504 11563 1 0 3 0x80 netio pflogd 14121 76869 88750 73 3 0x100090 kqread syslogd 88750 73102 1 0 3 0x100082 netio syslogd 21500 355534 1 77 3 0x100090 poll dhclient * 8900 354956 1 0 7 0 dhclient 99585 155640 0 0 3 0x14200 bored smr 91832 444867 0 0 2 0x14200 zerothread 68989 342977 0 0 3 0x14200 aiodoned aiodoned 80085 207182 0 0 3 0x14200 syncer update 46918 210797 0 0 3 0x14200 cleaner cleaner 63632 29719 0 0 3 0x14200 reaper reaper 19525 298594 0 0 3 0x14200 pgdaemon pagedaemon 84730 231613 0 0 3 0x14200 bored crynlk 47226 70689 0 0 3 0x14200 bored crypto 69474 453470 0 0 3 0x40014200 acpi0 acpi0 99871 33083 0 0 3 0x40014200 idle1 65625 378949 0 0 3 0x14200 bored softnet 76126 98879 0 0 3 0x14200 bored systqmp 27033 418463 0 0 3 0x14200 bored systq 64101 386364 0 0 3 0x40014200 bored softclock 92226 51319 0 0 3 0x40014200 idle0 1 52237 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 8900 (dhclient) thread 0xffff800020ddc278 (354956) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82911f98) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9491 6531K 6536K 78643K 10598 0 pcb 13 8K 8K 78643K 13 0 rtable 105 3K 3K 78643K 203 0 ifaddr 49 11K 11K 78643K 51 0 counters 43 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1473 0 iov 0 0K 0K 78643K 16 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1227 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 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 24 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 53 0 sigio 0 0K 0K 78643K 2 0 proc 60 63K 95K 78643K 439 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 33 2K 2K 78643K 33 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 31 148K 148K 78643K 31 0 exec 0 0K 1K 78643K 209 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 111 22K 22K 78643K 1060 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 7 0K 0K 78643K 11 0 temp 73 3856K 3920K 78643K 2800 0 kqueue 3 4K 4K 78643K 3 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 6 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 23 0 21 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 25 0 15 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 tcpqe 32 249 0 249 1 0 1 1 0 8 1 tcpcb 544 22 0 18 1 0 1 1 0 8 0 inpcb 296 55 0 48 1 0 1 1 0 8 0 nd6 48 6 0 0 1 0 1 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 pfstitem 24 14 0 0 1 0 1 1 0 8 0 pfstkey 112 14 0 0 1 0 1 1 0 8 0 pfstate 328 14 0 0 2 0 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 189 0 0 12 0 12 12 0 8 0 art_table 32 190 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 1 0 1 1 0 8 0 semupl 112 3 0 3 1 0 1 1 0 8 1 semapl 112 22 0 12 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1450 0 42 89 0 89 89 0 8 0 ffsino 272 1450 0 42 94 0 94 94 0 8 0 nchpl 144 1697 0 85 60 0 60 60 0 8 0 uvmvnodes 72 1498 0 0 28 0 28 28 0 8 0 vnodes 208 1498 0 0 79 0 79 79 0 8 0 namei 1024 4482 0 4482 1 0 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 192 5110 0 5110 8 1 7 7 0 8 7 plimitpl 152 19 0 10 1 0 1 1 0 8 0 sigapl 424 268 0 236 4 0 4 4 0 8 0 futexpl 56 499 0 497 1 0 1 1 0 8 0 knotepl 112 61 0 42 1 0 1 1 0 8 0 kqueuepl 144 4 0 2 1 0 1 1 0 8 0 pipelkpl 48 75 0 65 1 0 1 1 0 8 0 pipepl 120 150 0 131 1 0 1 1 0 8 0 fdescpl 496 253 0 236 3 0 3 3 0 8 0 filepl 152 1241 0 1137 5 0 5 5 0 8 1 lockfpl 104 15 0 14 1 0 1 1 0 8 0 lockfspl 48 7 0 6 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 76 0 67 1 0 1 1 0 8 0 zombiepl 144 236 0 236 1 0 1 1 0 8 1 processpl 984 268 0 236 5 0 5 5 0 8 0 procpl 624 315 0 271 4 0 4 4 0 8 0 sockpl 400 105 0 86 3 0 3 3 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 235 0 0 29 0 29 29 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 256 0 0 16 1 15 15 0 8 0 bufpl 280 3392 0 132 233 0 233 233 0 8 0 anonpl 16 38895 0 23714 62 1 61 61 0 124 0 amapchunkpl 152 1203 0 1054 8 0 8 8 0 158 2 amappl16 192 1009 0 193 41 0 41 41 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 33 0 28 1 0 1 1 0 8 0 amappl13 168 31 0 27 1 0 1 1 0 8 0 amappl12 160 9 0 7 1 0 1 1 0 8 0 amappl11 152 57 0 42 1 0 1 1 0 8 0 amappl10 144 19 0 15 1 0 1 1 0 8 0 amappl9 136 396 0 393 1 0 1 1 0 8 0 amappl8 128 333 0 308 1 0 1 1 0 8 0 amappl7 120 128 0 114 1 0 1 1 0 8 0 amappl6 112 22 0 21 1 0 1 1 0 8 0 amappl5 104 149 0 133 1 0 1 1 0 8 0 amappl4 96 487 0 459 1 0 1 1 0 8 0 amappl3 88 98 0 93 1 0 1 1 0 8 0 amappl2 80 1082 0 1003 2 0 2 2 0 8 0 amappl1 72 15488 0 15029 23 7 16 18 0 8 6 amappl 80 559 0 514 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 24 253 0 236 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 253 0 236 1 0 1 1 0 8 0 vmmpekpl 168 6043 0 6011 2 0 2 2 0 8 0 vmmpepl 168 38030 0 35971 118 5 113 113 0 357 23 vmsppl 368 252 0 236 2 0 2 2 0 8 0 pdppl 4096 513 0 472 6 0 6 6 0 8 0 pvpl 32 137272 0 118402 153 0 153 153 0 265 0 pmappl 232 252 0 236 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 269 0 4 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace soreceive(fffffd806f680000,0,ffff800020e1d028,0,0,ffff800020e1cf34) at soreceive+0x1110 sbsync sys/kern/uipc_socket.c:675 [inline] soreceive(fffffd806f680000,0,ffff800020e1d028,0,0,ffff800020e1cf34) at soreceive+0x1110 sys/kern/uipc_socket.c:855 soo_read(fffffd807cdf7260,ffff800020e1d028,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc278,6,ffff800020e1d028,0,ffff800020e1d110) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc278,ffff800020e1d0c0,ffff800020e1d110) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1d190) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1d190) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffa8c0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d70ff0) 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(ffffffff82911d90) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82911d90) at __mp_lock+0x127 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82911d90,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020edfc00,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020edfc00,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020edfc00,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff827ae868,120,ffffffff823ead3c,2) at tsleep+0x1cc sys/kern/kern_synch.c:155 sys_nanosleep(ffff800020ddc008,ffff800020edfd30,ffff800020edfd80) at sys_nanosleep+0x205 sys/kern/kern_time.c:297 syscall(ffff800020edfe00) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020edfe00) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe92d0, count: -12