uvm_fault(0xffffffff828a5880, 0xfffffd0000000008, 0, 2) -> e kernel: page fault trap, code=0 Stopped at soreceive+0x1100: movq %rbx,0x8(%r13) ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff828a5880, 0xfffffd0000000008, 0, 2) -> e soreceive(fffffd806f684000,0,ffff800020e1d008,0,0,ffff800020e1cf14) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f684000,0,ffff800020e1d008,0,0,ffff800020e1cf14) at soreceive+0x1100 sys/kern/uipc_socket.c:855 end trace frame: 0xffff800020e1cf50, count: 0 ddb{1}> trace soreceive(fffffd806f684000,0,ffff800020e1d008,0,0,ffff800020e1cf14) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f684000,0,ffff800020e1d008,0,0,ffff800020e1cf14) at soreceive+0x1100 sys/kern/uipc_socket.c:855 soo_read(fffffd80729f72f8,ffff800020e1d008,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc4e8,6,ffff800020e1d008,0,ffff800020e1d0f0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc4e8,ffff800020e1d0a0,ffff800020e1d0f0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1d170) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1d170) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1330, count: -6 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800020e1cef0 rbx 0xfffffd806f11db00 rdx 0xa rcx 0 rax 0 r8 0xffffffff8104b9a1 soreceive+0x5c1 r9 0x3 r10 0x647be506309fd30c r11 0x9c5e6158b99e5590 r12 0x846 r13 0xfffffd0000000000 r14 0 r15 0xfffffd806f684000 rip 0xffffffff8104c4e0 soreceive+0x1100 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020e1ce00 ss 0x10 soreceive+0x1100: movq %rbx,0x8(%r13) ddb{1}> show proc PROC (dhclient) pid=316428 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddd118,0xffff800020ddcc48 process=0xffff800020df03e8 user=0xffff800020e18000, vmspace=0xfffffd807f0002e0 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 97458 147164 33984 0 2 0 syz-executor.1 97458 269589 33984 0 3 0x4000080 netcon2 syz-executor.1 33984 393828 31738 0 3 0x82 nanosleep syz-executor.1 31738 296920 65330 0 3 0x82 thrsleep syz-fuzzer 31738 439644 65330 0 2 0x4000482 syz-fuzzer 31738 176645 65330 0 3 0x4000082 thrsleep syz-fuzzer 31738 376536 65330 0 3 0x4000082 thrsleep syz-fuzzer 31738 312814 65330 0 3 0x4000082 thrsleep syz-fuzzer 31738 118533 65330 0 3 0x4000082 thrsleep syz-fuzzer 31738 39495 65330 0 3 0x4000082 thrsleep syz-fuzzer 31738 61319 65330 0 3 0x4000082 thrsleep syz-fuzzer 31738 498819 65330 0 3 0x4000082 thrsleep syz-fuzzer 31738 69509 65330 0 2 0x4000082 syz-fuzzer 65330 501316 70504 0 3 0x10008a pause ksh 70504 503193 68416 0 3 0x92 select sshd 58468 505608 1 0 3 0x100083 ttyin getty 68416 373983 1 0 3 0x80 select sshd 69822 155895 60953 74 3 0x100092 bpf pflogd 60953 405517 1 0 3 0x80 netio pflogd 66482 287395 28845 73 3 0x100090 kqread syslogd 28845 352561 1 0 3 0x100082 netio syslogd 62440 319243 1 77 2 0x100010 dhclient *78115 316428 1 0 7 0 dhclient 33414 96045 0 0 3 0x14200 bored smr 6260 392920 0 0 2 0x14200 zerothread 97778 100801 0 0 3 0x14200 aiodoned aiodoned 52384 434583 0 0 3 0x14200 syncer update 57774 5526 0 0 3 0x14200 cleaner cleaner 36488 119874 0 0 7 0x14200 reaper 93424 363062 0 0 3 0x14200 pgdaemon pagedaemon 79606 442558 0 0 3 0x14200 bored crynlk 92324 110218 0 0 3 0x14200 bored crypto 43582 348281 0 0 3 0x40014200 acpi0 acpi0 75144 512881 0 0 3 0x40014200 idle1 63745 396692 0 0 2 0x14200 softnet 99593 487747 0 0 3 0x14200 bored systqmp 75076 75471 0 0 3 0x14200 bored systq 77236 500603 0 0 3 0x40014200 bored softclock 27818 110289 0 0 3 0x40014200 idle0 1 454378 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 78115 (dhclient) thread 0xffff800020ddc4e8 (316428) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828adde8) #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 Process 63745 (softnet) thread 0xffff800020d88000 (396692) shared rwlock softnet r = 0 (0xffff80000002c070) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 taskq_thread+0xdf sys/kern/kern_task.c:436 #2 proc_trampoline+0x1c ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9499 6408K 6798K 78643K 10785 0 pcb 13 8K 8K 78643K 30 0 rtable 93 5K 6K 78643K 246 0 ifaddr 63 13K 15K 78643K 95 0 counters 41 33K 34K 78643K 49 0 ioctlops 0 0K 4K 78643K 1496 0 iov 0 0K 12K 78643K 12 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1281 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 1K 1K 78643K 24 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 146 0 proc 60 63K 95K 78643K 450 0 subproc 16 1K 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 16 0 in_multi 56 2K 3K 78643K 84 0 ether_multi 1 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 217 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 122 39K 55K 78643K 1406 0 UVM aobj 6 2K 2K 78643K 6 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 6 0 NDP 9 0K 0K 78643K 17 0 temp 84 3858K 3924K 78643K 3408 0 kqueue 3 4K 9K 78643K 13 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 7 0 3 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 48 0 15 2 0 2 2 0 8 0 unpcb 120 47 0 37 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 tcpqe 32 192 0 192 1 1 0 1 0 8 0 tcpcb 544 132 0 126 1 0 1 1 0 8 0 inpcb 296 250 0 241 2 0 2 2 0 8 1 nd6 48 8 0 5 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 pfrktable 1344 5 0 1 1 0 1 1 0 8 0 pfstitem 24 27 0 2 1 0 1 1 0 8 0 pfstkey 112 27 0 2 1 0 1 1 0 8 0 pfstate 328 27 0 2 3 0 3 3 0 8 0 pfrule 1360 26 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 188 0 44 12 0 12 12 0 8 1 art_table 32 189 0 44 2 0 2 2 0 8 0 art_node 16 47 0 17 1 0 1 1 0 8 0 semupl 112 5 0 5 1 0 1 1 0 8 1 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1595 0 190 89 0 89 89 0 8 0 ffsino 272 1595 0 190 95 1 94 94 0 8 0 nchpl 144 1986 0 377 60 0 60 60 0 8 0 uvmvnodes 72 1687 0 0 31 0 31 31 0 8 0 vnodes 208 1687 0 0 89 0 89 89 0 8 0 namei 1024 5307 0 5307 2 1 1 1 0 8 1 percpumem 16 35 0 4 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 560 1 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 scxspl 192 6060 0 6060 8 7 1 7 0 8 1 plimitpl 152 25 0 17 1 0 1 1 0 8 0 sigapl 424 361 0 331 4 0 4 4 0 8 0 futexpl 56 1986 0 1986 1 0 1 1 0 8 1 knotepl 112 73 0 56 1 0 1 1 0 8 0 kqueuepl 144 18 0 16 1 0 1 1 0 8 0 pipelkpl 48 89 0 80 1 0 1 1 0 8 0 pipepl 120 178 0 163 1 0 1 1 0 8 0 fdescpl 496 346 0 331 3 0 3 3 0 8 0 filepl 152 1840 0 1759 6 1 5 5 0 8 1 lockfpl 104 28 0 27 1 0 1 1 0 8 0 lockfspl 48 12 0 11 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 96 122 0 113 1 0 1 1 0 8 0 zombiepl 144 331 0 330 2 1 1 1 0 8 0 processpl 984 361 0 330 6 1 5 5 0 8 1 procpl 624 628 0 587 4 0 4 4 0 8 0 sockpl 400 320 0 299 4 1 3 3 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 165 0 0 20 0 20 20 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 177 0 0 11 0 11 11 0 8 0 bufpl 280 3731 0 133 257 0 257 257 0 8 0 anonpl 16 47503 0 30876 70 1 69 69 0 124 2 amapchunkpl 152 2392 0 2247 21 1 20 20 0 158 13 amappl16 192 1455 0 561 46 0 46 46 0 8 1 amappl15 184 53 0 52 2 1 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 149 0 142 1 0 1 1 0 8 0 amappl12 160 6 0 4 2 1 1 1 0 8 0 amappl11 152 111 0 94 1 0 1 1 0 8 0 amappl10 144 25 0 18 1 0 1 1 0 8 0 amappl9 136 359 0 358 1 0 1 1 0 8 0 amappl8 128 353 0 321 2 0 2 2 0 8 0 amappl7 120 117 0 106 1 0 1 1 0 8 0 amappl6 112 23 0 19 1 0 1 1 0 8 0 amappl5 104 236 0 221 1 0 1 1 0 8 0 amappl4 96 551 0 517 1 0 1 1 0 8 0 amappl3 88 167 0 160 1 0 1 1 0 8 0 amappl2 80 1872 0 1800 2 0 2 2 0 8 0 amappl1 72 17610 0 17169 24 14 10 18 0 8 0 amappl 80 884 0 839 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 347 0 331 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 347 0 331 1 0 1 1 0 8 0 vmmpekpl 168 6698 0 6664 2 0 2 2 0 8 0 vmmpepl 168 49060 0 47020 123 16 107 111 0 357 17 vmsppl 368 346 0 330 2 0 2 2 0 8 0 pdppl 4096 701 0 661 7 1 6 6 0 8 0 pvpl 32 161748 0 142071 170 3 167 167 0 265 6 pmappl 232 346 0 330 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 259 0 7 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(ffffffff82764ff0) 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(ffffffff828adbe0) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828adbe0) at __mp_lock+0x127 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800020dcf2f0,1) at uvm_unmap_detach+0xe7 sys/uvm/uvm_map.c:1581 uvm_map_teardown(fffffd807f000a10) at uvm_map_teardown+0x25c sys/uvm/uvm_map.c:2757 uvmspace_free(fffffd807f000a10) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff800020e39350) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff800020d895f0) at reaper+0x189 sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at soreceive+0x1100: movq %rbx,0x8(%r13) ddb{1}> trace soreceive(fffffd806f684000,0,ffff800020e1d008,0,0,ffff800020e1cf14) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f684000,0,ffff800020e1d008,0,0,ffff800020e1cf14) at soreceive+0x1100 sys/kern/uipc_socket.c:855 soo_read(fffffd80729f72f8,ffff800020e1d008,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc4e8,6,ffff800020e1d008,0,ffff800020e1d0f0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc4e8,ffff800020e1d0a0,ffff800020e1d0f0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1d170) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1d170) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1330, count: -6