uvm_fault(0xffffffff827b2830, 0xfffffd0000000008, 0, 2) -> e kernel: page fault trap, code=0 Stopped at soreceive+0xdcd: movq %rbx,0x8(%r12) ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff827b2830, 0xfffffd0000000008, 0, 2) -> e soreceive(fffffd806f68a190,0,ffff800020e1e008,0,0,ffff800020e1df14) at soreceive+0xdcd sys/kern/uipc_socket.c:985 end trace frame: 0xffff800020e1df50, count: 0 ddb{1}> trace soreceive(fffffd806f68a190,0,ffff800020e1e008,0,0,ffff800020e1df14) at soreceive+0xdcd sys/kern/uipc_socket.c:985 soo_read(fffffd807d236428,ffff800020e1e008,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddd388,6,ffff800020e1e008,0,ffff800020e1e0f0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddd388,ffff800020e1e0a0,ffff800020e1e0f0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e170) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e170) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff2f60, count: -6 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800020e1def0 rbx 0xfffffd806c9b0300 rdx 0xa rcx 0 rax 0xfffffd806f68a190 r8 0xffffffff81483eb6 soreceive+0xbe6 r9 0x3 r10 0xe2eb0b42299b6ea7 r11 0xf81a892847ccdc3f r12 0xfffffd0000000000 r13 0 r14 0x1 r15 0 rip 0xffffffff8148409d soreceive+0xdcd cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800020e1de00 ss 0x10 soreceive+0xdcd: movq %rbx,0x8(%r12) ddb{1}> show proc PROC (dhclient) pid=410960 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddc008,0xffff800020ddd608 process=0xffff800020df07d0 user=0xffff800020e19000, vmspace=0xfffffd807efff170 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 16932 56003 21692 0 2 0 syz-executor.0 16932 416606 21692 0 3 0x4000080 fsleep syz-executor.0 16932 377795 21692 0 3 0x4000080 fsleep syz-executor.0 16932 45256 21692 0 2 0x4000000 syz-executor.0 72047 96070 1 0 3 0x100083 ttyin getty 43524 489692 0 0 3 0x14200 bored sosplice 21692 460632 67215 0 3 0x82 nanosleep syz-executor.0 67215 486407 67515 0 3 0x82 thrsleep syz-fuzzer 67215 494909 67515 0 3 0x4000082 nanosleep syz-fuzzer 67215 262870 67515 0 3 0x4000082 thrsleep syz-fuzzer 67215 236272 67515 0 3 0x4000082 thrsleep syz-fuzzer 67215 427569 67515 0 3 0x4000082 thrsleep syz-fuzzer 67215 446627 67515 0 2 0x4000082 syz-fuzzer 67215 519139 67515 0 3 0x4000082 thrsleep syz-fuzzer 67215 488970 67515 0 3 0x4000082 thrsleep syz-fuzzer 67215 165778 67515 0 3 0x4000082 thrsleep syz-fuzzer 67215 119955 67515 0 3 0x4000082 thrsleep syz-fuzzer 67515 32551 63902 0 3 0x10008a pause ksh 63902 91658 91218 0 3 0x92 select sshd 91218 244337 1 0 3 0x80 select sshd 17622 409658 55966 74 3 0x100092 bpf pflogd 55966 470376 1 0 3 0x80 netio pflogd 92214 249122 31446 73 3 0x100090 kqread syslogd 31446 25188 1 0 3 0x100082 netio syslogd 89024 468055 1 77 3 0x100090 poll dhclient *35771 410960 1 0 7 0 dhclient 35171 323429 0 0 3 0x14200 bored smr 43910 44958 0 0 2 0x14200 zerothread 33403 455667 0 0 3 0x14200 aiodoned aiodoned 20151 20647 0 0 3 0x14200 syncer update 84936 96872 0 0 3 0x14200 cleaner cleaner 3526 198609 0 0 7 0x14200 reaper 71312 370488 0 0 3 0x14200 pgdaemon pagedaemon 30975 97040 0 0 3 0x14200 bored crynlk 83256 239500 0 0 3 0x14200 bored crypto 9333 295565 0 0 3 0x40014200 acpi0 acpi0 84080 12658 0 0 3 0x40014200 idle1 53322 519793 0 0 2 0x14200 softnet 84606 353589 0 0 3 0x14200 bored systqmp 18456 410471 0 0 3 0x14200 bored systq 84567 257121 0 0 3 0x40014200 bored softclock 55264 179204 0 0 3 0x40014200 idle0 1 62908 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 35771 (dhclient) thread 0xffff800020ddd388 (410960) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff829013e0) #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 Process 53322 (softnet) thread 0xffff800020d88750 (519793) 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 9538 6423K 7385K 78643K 11812 0 pcb 13 8K 8K 78643K 75 0 rtable 68 2K 4K 78643K 328 0 ifaddr 77 14K 16K 78643K 143 0 sysctl 1 1K 1K 78643K 1 0 counters 41 33K 34K 78643K 55 0 ioctlops 0 0K 4K 78643K 1507 0 iov 0 0K 16K 78643K 45 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1656 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 83 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 397 0 sigio 0 0K 0K 78643K 15 0 proc 61 63K 95K 78643K 515 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 34 0 in_multi 38 2K 2K 78643K 123 0 ether_multi 1 0K 0K 78643K 4 0 mrt 0 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 236 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 124 71K 79K 78643K 2297 0 UVM aobj 19 2K 2K 78643K 23 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 38 0 NDP 14 0K 0K 78643K 33 0 temp 123 3863K 3953K 78643K 6536 0 kqueue 3 4K 9K 78643K 28 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 6 0 2 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 74 0 50 2 0 2 2 0 8 0 unpcb 120 299 0 287 1 0 1 1 0 8 0 syncache 264 8 0 8 3 3 0 1 0 8 0 tcpqe 32 650 0 650 1 1 0 1 0 8 0 tcpcb 544 123 0 119 1 0 1 1 0 8 0 inpcb 296 754 0 747 3 1 2 2 0 8 1 rttmr 72 2 0 2 2 1 1 1 0 8 1 nd6 48 24 0 21 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 3 0 1 0 8 0 ppxss 1128 2 0 2 2 2 0 1 0 8 0 pffrag 232 3 0 2 2 1 1 1 0 482 0 pffrnode 88 3 0 2 2 1 1 1 0 8 0 pffrent 40 94 0 93 2 1 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 54 0 12 1 0 1 1 0 8 0 pfstkey 112 54 0 12 2 0 2 2 0 8 0 pfstate 328 54 0 12 4 0 4 4 0 8 0 pfrule 1360 24 0 17 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 294 0 190 13 2 11 12 0 8 1 art_table 32 295 0 190 2 0 2 2 0 8 0 art_node 16 73 0 54 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 2 1 0 1 1 0 8 0 semapl 112 81 0 71 1 0 1 1 0 8 0 shmpl 112 20 0 5 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1970 0 567 89 0 89 89 0 8 0 ffsino 272 1970 0 567 96 1 95 95 0 8 0 nchpl 144 2693 0 1083 60 0 60 60 0 8 0 uvmvnodes 72 2377 0 0 44 0 44 44 0 8 0 vnodes 208 2377 0 0 126 0 126 126 0 8 0 namei 1024 7993 0 7993 3 2 1 1 0 8 1 percpumem 16 38 0 7 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 5 0 1 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 8284 0 8284 9 8 1 7 0 8 1 plimitpl 152 55 0 47 1 0 1 1 0 8 0 sigapl 424 615 0 584 4 0 4 4 0 8 0 futexpl 56 6370 0 6368 2 1 1 1 0 8 0 knotepl 112 86 0 69 1 0 1 1 0 8 0 kqueuepl 144 66 0 64 1 0 1 1 0 8 0 pipepl 304 117 0 108 3 2 1 2 0 8 0 fdescpl 496 599 0 584 3 0 3 3 0 8 0 filepl 152 3993 0 3912 6 1 5 5 0 8 0 lockfpl 104 106 0 105 1 0 1 1 0 8 0 lockfspl 48 30 0 29 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 575 0 566 1 0 1 1 0 8 0 zombiepl 144 584 0 583 2 1 1 1 0 8 0 processpl 992 615 0 583 6 1 5 5 0 8 0 procpl 624 1497 0 1453 4 0 4 4 0 8 0 sosppl 128 9 0 9 2 2 0 1 0 8 0 sockpl 400 1106 0 1085 7 4 3 4 0 8 0 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 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 170 0 0 21 0 21 21 0 8 1 mtagpl 96 39 0 0 1 0 1 1 0 8 0 mbufpl 256 380 0 0 22 0 22 22 0 8 0 bufpl 280 4191 0 135 290 0 290 290 0 8 0 anonpl 16 74027 0 57642 93 7 86 86 0 124 16 amapchunkpl 152 4000 0 3842 22 15 7 20 0 158 0 amappl16 192 2919 0 1989 65 10 55 59 0 8 8 amappl15 184 9 0 7 1 0 1 1 0 8 0 amappl14 176 24 0 20 1 0 1 1 0 8 0 amappl13 168 208 0 204 1 0 1 1 0 8 0 amappl12 160 187 0 184 1 0 1 1 0 8 0 amappl11 152 57 0 41 1 0 1 1 0 8 0 amappl10 144 17 0 13 1 0 1 1 0 8 0 amappl9 136 572 0 569 1 0 1 1 0 8 0 amappl8 128 532 0 500 2 0 2 2 0 8 0 amappl7 120 119 0 107 1 0 1 1 0 8 0 amappl6 112 27 0 21 1 0 1 1 0 8 0 amappl5 104 500 0 482 1 0 1 1 0 8 0 amappl4 96 505 0 474 1 0 1 1 0 8 0 amappl3 88 115 0 110 1 0 1 1 0 8 0 amappl2 80 4017 0 3946 2 0 2 2 0 8 0 amappl1 72 22896 0 22439 24 14 10 18 0 8 0 amappl 80 1762 0 1712 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 22 0 4 1 0 1 1 0 8 0 uaddrrnd 24 604 0 585 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 604 0 585 1 0 1 1 0 8 0 vmmpekpl 168 9020 0 8984 2 0 2 2 0 8 0 vmmpepl 168 80906 0 78793 142 34 108 117 0 357 14 vmsppl 368 603 0 584 2 0 2 2 0 8 0 pdppl 4096 1215 0 1172 7 1 6 6 0 8 0 pvpl 32 227149 0 207675 205 8 197 197 0 265 31 pmappl 232 603 0 584 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 277 0 13 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(ffffffff8270eff0) 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(ffffffff829011d8) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829011d8) at __mp_lock+0x139 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(ffffffff829011d8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829011d8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800020dcf2a0,1) at uvm_unmap_detach+0xe7 sys/uvm/uvm_map.c:1581 uvm_map_teardown(fffffd807efff8a0) at uvm_map_teardown+0x25c sys/uvm/uvm_map.c:2757 uvmspace_free(fffffd807efff8a0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff800020df0f90) 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: -12 ddb{0}> machine ddbcpu 1 Stopped at soreceive+0xdcd: movq %rbx,0x8(%r12) ddb{1}> trace soreceive(fffffd806f68a190,0,ffff800020e1e008,0,0,ffff800020e1df14) at soreceive+0xdcd sys/kern/uipc_socket.c:985 soo_read(fffffd807d236428,ffff800020e1e008,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddd388,6,ffff800020e1e008,0,ffff800020e1e0f0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddd388,ffff800020e1e0a0,ffff800020e1e0f0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e170) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e170) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff2f60, count: -6