uvm_fault(0xffffffff827fad80, 0xfffffd0000000008, 0, 2) -> e kernel: page fault trap, code=0 Stopped at soreceive+0x1100: movq %rbx,0x8(%r13) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff827fad80, 0xfffffd0000000008, 0, 2) -> e soreceive(fffffd806f6824b0,0,ffff800020e17a88,0,0,ffff800020e17994) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f6824b0,0,ffff800020e17a88,0,0,ffff800020e17994) at soreceive+0x1100 sys/kern/uipc_socket.c:855 end trace frame: 0xffff800020e179d0, count: 0 ddb{0}> trace soreceive(fffffd806f6824b0,0,ffff800020e17a88,0,0,ffff800020e17994) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f6824b0,0,ffff800020e17a88,0,0,ffff800020e17994) at soreceive+0x1100 sys/kern/uipc_socket.c:855 soo_read(fffffd806fc37428,ffff800020e17a88,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc758,3,ffff800020e17a88,0,ffff800020e17b70) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc758,ffff800020e17b20,ffff800020e17b70) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e17bf0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e17bf0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1d90, count: -6 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020e17970 rbx 0xfffffd8068601600 rdx 0x56588 acpi_pdirpa+0x423f0 rcx 0 rax 0 r8 0xffffffff81800901 soreceive+0x5c1 r9 0x3 r10 0x57b5f1735800532b r11 0xa488d9fb874d451a r12 0x7e r13 0xfffffd0000000000 r14 0 r15 0xfffffd806f6824b0 rip 0xffffffff81801440 soreceive+0x1100 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020e17880 ss 0x10 soreceive+0x1100: movq %rbx,0x8(%r13) ddb{0}> show proc PROC (dhclient) pid=375273 stat=onproc flags process=100010 proc=0 pri=50, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddc4e8,0xffff800020e41880 process=0xffff800020df0f70 user=0xffff800020e12000, vmspace=0xfffffd807f000730 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 9083 271982 0 0 3 0x14200 bored sosplice 95503 219882 84983 0 3 0x82 piperd syz-executor.0 84983 405612 86176 0 2 0x2 syz-fuzzer 84983 41622 86176 0 2 0x4000482 syz-fuzzer 84983 382593 86176 0 3 0x4000082 thrsleep syz-fuzzer 84983 117158 86176 0 3 0x4000082 thrsleep syz-fuzzer 84983 74917 86176 0 2 0x4000002 syz-fuzzer 84983 439538 86176 0 3 0x4000082 thrsleep syz-fuzzer 84983 41701 86176 0 3 0x4000082 thrsleep syz-fuzzer 84983 86985 86176 0 3 0x4000082 thrsleep syz-fuzzer 84983 124746 86176 0 3 0x4000082 kqread syz-fuzzer 84983 207439 86176 0 2 0x4000482 syz-fuzzer 86176 381093 73091 0 3 0x10008a pause ksh 73091 25879 41360 0 3 0x92 select sshd 45134 232556 1 0 3 0x100083 ttyin getty 41360 192002 1 0 3 0x80 select sshd 73354 120787 98476 74 3 0x100092 bpf pflogd 98476 329788 1 0 3 0x80 netio pflogd 87635 172292 59365 73 3 0x100090 kqread syslogd 59365 59017 1 0 3 0x100082 netio syslogd * 8294 375273 1 77 7 0x100010 dhclient 66778 340469 1 0 3 0x80 poll dhclient 2678 360537 0 0 3 0x14200 bored smr 37626 218281 0 0 2 0x14200 zerothread 22733 356721 0 0 3 0x14200 aiodoned aiodoned 99890 208727 0 0 3 0x14200 syncer update 12849 469446 0 0 3 0x14200 cleaner cleaner 34766 104462 0 0 3 0x14200 reaper reaper 97253 105821 0 0 3 0x14200 pgdaemon pagedaemon 10953 103381 0 0 3 0x14200 bored crynlk 56864 458669 0 0 3 0x14200 bored crypto 13147 57089 0 0 3 0x40014200 acpi0 acpi0 67051 25265 0 0 3 0x40014200 idle1 65293 170811 0 0 3 0x14200 tqbarend softnet 19054 457471 0 0 3 0x14200 bored systqmp 84637 193038 0 0 3 0x14200 bored systq 43186 141150 0 0 2 0x40014200 softclock 35067 113929 0 0 3 0x40014200 idle0 1 272919 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 8294 (dhclient) thread 0xffff800020ddc758 (375273) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828b04d8) #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 65293 (softnet) thread 0xffff800020d88000 (170811) 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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9512 6415K 6927K 78643K 11326 0 pcb 13 8K 8K 78643K 87 0 rtable 84 3K 8K 78643K 407 0 ifaddr 59 12K 14K 78643K 139 0 sysctl 0 0K 0K 78643K 2 0 counters 41 33K 34K 78643K 59 0 ioctlops 0 0K 4K 78643K 1529 0 iov 0 0K 16K 78643K 147 0 mount 1 1K 1K 78643K 1 0 vnodes 1228 77K 77K 78643K 1474 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 0K 78643K 51 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 381 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 95K 78643K 515 0 subproc 23 1K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 321 0 in_multi 27 1K 2K 78643K 131 0 ether_multi 1 0K 0K 78643K 15 0 mrt 0 0K 0K 78643K 2 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 242 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 126 103K 120K 78643K 2181 0 UVM aobj 18 2K 2K 78643K 22 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 69 0 NDP 10 0K 0K 78643K 36 0 temp 107 3862K 3929K 78643K 11377 0 kqueue 3 4K 8K 78643K 23 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 9 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 31 0 29 1 0 1 1 0 8 0 rtentry 112 87 0 55 2 0 2 2 0 8 0 unpcb 120 173 0 163 1 0 1 1 0 8 0 syncache 264 13 0 13 3 2 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 544 468 0 463 2 0 2 2 0 8 1 inpcb 296 781 0 769 3 0 3 3 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 23 0 21 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 21 0 20 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfqueue 264 4 0 2 2 1 1 1 0 8 0 pfstitem 24 16 0 8 1 0 1 1 0 8 0 pfstkey 112 17 0 9 1 0 1 1 0 8 0 pfstate 328 17 0 9 2 0 2 2 0 8 0 pfrule 1360 28 0 19 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 365 0 230 15 2 13 14 0 8 1 art_table 32 366 0 230 2 0 2 2 0 8 0 art_node 16 86 0 56 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 14 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 49 0 39 1 0 1 1 0 8 0 shmpl 112 20 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1915 0 513 89 1 88 89 0 8 0 ffsino 272 1915 0 513 94 0 94 94 0 8 0 nchpl 144 2701 0 1113 60 0 60 60 0 8 0 uvmvnodes 72 2140 0 0 39 0 39 39 0 8 0 vnodes 208 2140 0 0 113 0 113 113 0 8 0 namei 1024 7601 0 7601 1 0 1 1 0 8 1 percpumem 16 40 0 9 1 0 1 1 0 8 0 vcpupl 1984 9 0 0 2 0 2 2 0 8 0 vmpool 560 16 0 7 1 0 1 1 0 8 0 pfiaddrpl 120 6 0 6 1 1 0 1 0 8 0 scxspl 192 7954 0 7954 10 9 1 7 0 8 1 plimitpl 152 36 0 28 1 0 1 1 0 8 0 sigapl 424 614 0 583 6 0 6 6 0 8 2 futexpl 56 6627 0 6627 1 0 1 1 0 8 1 knotepl 112 96 0 83 1 0 1 1 0 8 0 kqueuepl 144 63 0 55 1 0 1 1 0 8 0 pipepl 304 136 0 129 4 3 1 2 0 8 0 fdescpl 496 578 0 563 3 0 3 3 0 8 0 filepl 152 3766 0 3681 5 0 5 5 0 8 1 lockfpl 104 98 0 97 1 0 1 1 0 8 0 lockfspl 48 33 0 32 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 494 0 485 1 0 1 1 0 8 0 zombiepl 144 584 0 583 1 0 1 1 0 8 0 processpl 984 614 0 583 7 0 7 7 0 8 2 procpl 624 1381 0 1341 6 0 6 6 0 8 2 sosppl 128 9 0 9 3 2 1 1 0 8 1 sockpl 400 985 0 965 5 1 4 4 0 8 1 mcl64k 65536 9 0 0 2 0 2 2 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 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 142 0 0 17 0 17 17 0 8 0 mtagpl 96 24 0 0 1 0 1 1 0 8 0 mbufpl 256 261 0 0 15 0 15 15 0 8 0 bufpl 280 4195 0 134 291 0 291 291 0 8 0 anonpl 16 66490 0 50160 69 1 68 68 0 124 1 amapchunkpl 152 3239 0 3097 14 7 7 13 0 158 0 amappl16 192 2467 0 1576 47 0 47 47 0 8 2 amappl15 184 10 0 9 1 0 1 1 0 8 0 amappl14 176 22 0 19 1 0 1 1 0 8 0 amappl13 168 36 0 33 1 0 1 1 0 8 0 amappl12 160 165 0 160 1 0 1 1 0 8 0 amappl11 152 105 0 89 1 0 1 1 0 8 0 amappl10 144 17 0 11 1 0 1 1 0 8 0 amappl9 136 535 0 534 1 0 1 1 0 8 0 amappl8 128 502 0 478 1 0 1 1 0 8 0 amappl7 120 127 0 112 1 0 1 1 0 8 0 amappl6 112 63 0 59 1 0 1 1 0 8 0 amappl5 104 623 0 604 1 0 1 1 0 8 0 amappl4 96 503 0 471 1 0 1 1 0 8 0 amappl3 88 122 0 116 1 0 1 1 0 8 0 amappl2 80 3577 0 3506 2 0 2 2 0 8 0 amappl1 72 22792 0 22345 23 13 10 18 0 8 0 amappl 80 1620 0 1574 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 21 0 4 1 0 1 1 0 8 0 uaddrrnd 24 594 0 570 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 594 0 570 1 0 1 1 0 8 0 vmmpekpl 168 8239 0 8203 3 0 3 3 0 8 1 vmmpepl 168 77655 0 75660 141 26 115 124 0 357 24 vmsppl 368 593 0 570 3 0 3 3 0 8 0 pdppl 4096 1195 0 1149 7 0 7 7 0 8 0 pvpl 32 213855 0 194467 168 2 166 166 0 265 8 pmappl 232 593 0 570 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 268 0 6 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace soreceive(fffffd806f6824b0,0,ffff800020e17a88,0,0,ffff800020e17994) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f6824b0,0,ffff800020e17a88,0,0,ffff800020e17994) at soreceive+0x1100 sys/kern/uipc_socket.c:855 soo_read(fffffd806fc37428,ffff800020e17a88,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc758,3,ffff800020e17a88,0,ffff800020e17b70) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc758,ffff800020e17b20,ffff800020e17b70) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e17bf0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e17bf0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1d90, 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x36 kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x36 sys/dev/kcov.c:79 __mp_acquire_count(ffffffff828b02d0,2) 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(ffff800021ef2a08,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800021ef2a08,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800021ef2a08,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 msleep(ffff80000002c068,ffff80000002c018,20,ffffffff823d610d,0) at msleep+0x214 sys/kern/kern_synch.c:257 taskq_do_barrier(ffff80000002c000) at taskq_do_barrier+0x131 sys/kern/kern_task.c:301 ifq_destroy(ffff800000b0d278) at ifq_destroy+0xd1 sys/net/ifq.c:274 if_detach(ffff800000b0d000) at if_detach+0x3f8 sys/net/if.c:1186 tun_clone_destroy(ffff800000b0d000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:480 spec_close(ffff800021ef2d00) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807eab3688,7,fffffd807f7bf780,ffff800020e23608) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8066790e58,ffff800020e23608) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8066790e58,ffff800020e23608) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8066790e58,ffff800020e23608) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8066790e58,ffff800020e23608) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e23608) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e23608,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e23608,ffff800021ef2f90,ffff800021ef2fe0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021ef3060) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021ef3060) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd3530, count: -24