uvm_fault(0xffffffff8285df78, 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(0xffffffff8285df78, 0xfffffd0000000008, 0, 2) -> e soreceive(fffffd806f686320,0,ffff800020e1e838,0,0,ffff800020e1e744) at soreceive+0xdcd sys/kern/uipc_socket.c:985 end trace frame: 0xffff800020e1e780, count: 0 ddb{0}> trace soreceive(fffffd806f686320,0,ffff800020e1e838,0,0,ffff800020e1e744) at soreceive+0xdcd sys/kern/uipc_socket.c:985 soo_read(fffffd80747f6260,ffff800020e1e838,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc008,6,ffff800020e1e838,0,ffff800020e1e920) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc008,ffff800020e1e8d0,ffff800020e1e920) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e9a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e9a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6750, count: -6 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020e1e720 rbx 0xfffffd807da93400 rdx 0xa rcx 0 rax 0xfffffd806f686320 r8 0xffffffff82079d66 soreceive+0xbe6 r9 0x3 r10 0x10e6f749bfe3813c r11 0x71f63df793592bc3 r12 0xfffffd0000000000 r13 0 r14 0x1 r15 0 rip 0xffffffff82079f4d soreceive+0xdcd cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800020e1e630 ss 0x10 soreceive+0xdcd: movq %rbx,0x8(%r12) ddb{0}> show proc PROC (dhclient) pid=194196 stat=onproc flags process=0 proc=0 pri=24, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddd118,0xffff800020ddc768 process=0xffff800020df0bb0 user=0xffff800020e19000, vmspace=0xfffffd807efff000 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 326 257437 63072 0 7 0 syz-executor.0 88235 325878 0 0 3 0x14200 bored sosplice 63072 325079 10973 0 2 0x482 syz-executor.0 10973 223702 64086 0 3 0x82 thrsleep syz-fuzzer 10973 189723 64086 0 3 0x4000082 thrsleep syz-fuzzer 10973 162212 64086 0 3 0x4000082 thrsleep syz-fuzzer 10973 325446 64086 0 3 0x4000082 thrsleep syz-fuzzer 10973 398379 64086 0 3 0x4000082 thrsleep syz-fuzzer 10973 161755 64086 0 3 0x4000082 thrsleep syz-fuzzer 10973 169197 64086 0 3 0x4000082 thrsleep syz-fuzzer 10973 249827 64086 0 3 0x4000082 thrsleep syz-fuzzer 10973 139217 64086 0 3 0x4000082 kqread syz-fuzzer 10973 216821 64086 0 3 0x4000082 thrsleep syz-fuzzer 64086 6471 91970 0 3 0x10008a pause ksh 91970 155994 63829 0 3 0x92 select sshd 58970 303205 1 0 3 0x100083 ttyin getty 63829 242997 1 0 3 0x80 select sshd 27160 382674 17698 74 3 0x100092 bpf pflogd 17698 341909 1 0 3 0x80 netio pflogd 95119 407805 20245 73 3 0x100090 kqread syslogd 20245 482265 1 0 3 0x100082 netio syslogd 48315 127984 1 77 2 0x100010 dhclient *75047 194196 1 0 7 0 dhclient 47948 456843 0 0 3 0x14200 bored smr 24877 124152 0 0 2 0x14200 zerothread 21473 129205 0 0 3 0x14200 aiodoned aiodoned 76219 355460 0 0 3 0x14200 syncer update 75034 490047 0 0 3 0x14200 cleaner cleaner 99797 147733 0 0 3 0x14200 reaper reaper 95207 46621 0 0 3 0x14200 pgdaemon pagedaemon 94921 254805 0 0 3 0x14200 bored crynlk 14677 439279 0 0 3 0x14200 bored crypto 49460 426097 0 0 3 0x40014200 acpi0 acpi0 28107 284468 0 0 3 0x40014200 idle1 67184 29009 0 0 3 0x14200 tqbarend softnet 62086 216999 0 0 3 0x14200 bored systqmp 76776 128342 0 0 3 0x14200 bored systq 31955 49920 0 0 3 0x40014200 bored softclock 60023 420043 0 0 3 0x40014200 idle0 1 178404 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 75047 (dhclient) thread 0xffff800020ddc008 (194196) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828fbd80) #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 67184 (softnet) thread 0xffff800020d88ea0 (29009) 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 9490 6413K 7189K 78643K 11603 0 pcb 13 8K 8K 78643K 64 0 rtable 83 13K 14K 78643K 374 0 ifaddr 53 12K 14K 78643K 113 0 counters 41 33K 34K 78643K 59 0 ioctlops 0 0K 4K 78643K 1517 0 iov 0 0K 16K 78643K 29 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1507 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 48 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 300 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 95K 78643K 471 0 subproc 23 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 100 0 in_multi 43 2K 2K 78643K 91 0 ether_multi 1 0K 0K 78643K 4 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 234 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 121 71K 71K 78643K 1928 0 UVM aobj 19 2K 2K 78643K 19 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 40 0 NDP 8 0K 0K 78643K 25 0 temp 88 3870K 3938K 78643K 8138 0 kqueue 3 4K 8K 78643K 15 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 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 40 0 38 1 0 1 1 0 8 0 rtentry 112 73 0 47 2 0 2 2 0 8 0 unpcb 120 149 0 139 1 0 1 1 0 8 0 syncache 264 8 0 8 3 3 0 1 0 8 0 tcpqe 32 874 0 874 2 2 0 2 0 8 0 tcpcb 544 215 0 211 1 0 1 1 0 8 0 inpcb 296 454 0 443 3 1 2 2 0 8 1 nd6 48 14 0 13 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1128 2 0 2 2 2 0 1 0 8 0 pffrag 232 3 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 2 1 0 1 1 0 8 0 pffrent 40 92 0 91 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 19 0 15 2 1 1 1 0 8 0 pfstitem 24 43 0 13 1 0 1 1 0 8 0 pfstkey 112 43 0 13 1 0 1 1 0 8 0 pfstate 328 43 0 13 3 0 3 3 0 8 0 pfrule 1360 31 0 22 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 370 0 265 13 1 12 13 0 8 2 art_table 32 372 0 265 2 0 2 2 0 8 0 art_node 16 72 0 50 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 8 1 0 1 1 0 8 0 semupl 112 5 0 5 2 2 0 1 0 8 0 semapl 112 40 0 30 1 0 1 1 0 8 0 shmpl 112 16 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1815 0 412 89 0 89 89 0 8 0 ffsino 272 1815 0 412 96 1 95 95 0 8 0 nchpl 144 2433 0 824 60 0 60 60 0 8 0 uvmvnodes 72 2095 0 0 39 0 39 39 0 8 0 vnodes 208 2095 0 0 111 0 111 111 0 8 0 namei 1024 7086 0 7086 5 4 1 1 0 8 1 percpumem 16 40 0 9 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 6 0 2 2 1 1 1 0 8 0 pfiaddrpl 120 8 0 4 2 1 1 1 0 8 0 scsiplug 64 2 0 2 2 2 0 1 0 8 0 scxspl 192 7519 0 7519 10 9 1 7 0 8 1 plimitpl 152 38 0 30 1 0 1 1 0 8 0 sigapl 424 516 0 484 4 0 4 4 0 8 0 futexpl 56 4588 0 4588 4 3 1 1 0 8 1 knotepl 112 73 0 56 1 0 1 1 0 8 0 kqueuepl 144 46 0 44 1 0 1 1 0 8 0 pipepl 304 121 0 112 4 3 1 2 0 8 0 fdescpl 496 500 0 484 3 0 3 3 0 8 0 filepl 152 3163 0 3074 7 1 6 6 0 8 2 lockfpl 104 100 0 99 1 0 1 1 0 8 0 lockfspl 48 31 0 30 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 400 0 391 1 0 1 1 0 8 0 zombiepl 144 485 0 484 2 1 1 1 0 8 0 processpl 992 516 0 484 6 1 5 5 0 8 0 procpl 624 1157 0 1116 4 0 4 4 0 8 0 sosppl 128 8 0 8 2 2 0 1 0 8 0 sockpl 400 646 0 625 10 4 6 6 0 8 3 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 295 0 0 36 0 36 36 0 8 0 mtagpl 96 135 0 0 4 0 4 4 0 8 0 mbufpl 256 589 0 0 34 0 34 34 0 8 0 bufpl 280 4097 0 133 284 0 284 284 0 8 0 anonpl 16 57718 0 40877 70 1 69 69 0 124 0 amapchunkpl 152 2849 0 2691 11 3 8 10 0 158 0 amappl16 192 1919 0 1017 48 2 46 46 0 8 0 amappl15 184 2 0 1 2 1 1 1 0 8 0 amappl14 176 146 0 141 1 0 1 1 0 8 0 amappl13 168 174 0 169 1 0 1 1 0 8 0 amappl12 160 156 0 152 2 1 1 1 0 8 0 amappl11 152 175 0 159 1 0 1 1 0 8 0 amappl10 144 20 0 16 1 0 1 1 0 8 0 amappl9 136 388 0 387 1 0 1 1 0 8 0 amappl8 128 360 0 323 2 0 2 2 0 8 0 amappl7 120 117 0 106 1 0 1 1 0 8 0 amappl6 112 147 0 141 1 0 1 1 0 8 0 amappl5 104 131 0 115 1 0 1 1 0 8 0 amappl4 96 757 0 725 1 0 1 1 0 8 0 amappl3 88 265 0 257 1 0 1 1 0 8 0 amappl2 80 3028 0 2954 2 0 2 2 0 8 0 amappl1 72 20968 0 20536 23 12 11 18 0 8 0 amappl 80 1416 0 1367 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 18 0 0 1 0 1 1 0 8 0 uaddrrnd 24 506 0 486 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 506 0 486 1 0 1 1 0 8 0 vmmpekpl 168 7431 0 7391 2 0 2 2 0 8 0 vmmpepl 168 68275 0 66183 123 26 97 111 0 357 2 vmsppl 368 505 0 486 2 0 2 2 0 8 0 pdppl 4096 1019 0 976 7 1 6 6 0 8 0 pvpl 32 195918 0 176244 176 10 166 169 0 265 5 pmappl 232 505 0 486 4 2 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 309 0 14 10 1 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace soreceive(fffffd806f686320,0,ffff800020e1e838,0,0,ffff800020e1e744) at soreceive+0xdcd sys/kern/uipc_socket.c:985 soo_read(fffffd80747f6260,ffff800020e1e838,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc008,6,ffff800020e1e838,0,ffff800020e1e920) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc008,ffff800020e1e8d0,ffff800020e1e920) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e9a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e9a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6750, 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_cmp4(95b4b,95b4c) at __sanitizer_cov_trace_cmp4+0x11 kd_curproc sys/dev/kcov.c:397 [inline] __sanitizer_cov_trace_cmp4(95b4b,95b4c) at __sanitizer_cov_trace_cmp4+0x11 trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(95b4b,95b4c) at __sanitizer_cov_trace_cmp4+0x11 sys/dev/kcov.c:135 __mp_lock(ffffffff828fbb78) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828fbb78) at __mp_lock+0x139 sys/kern/kern_lock.c:147 pageflttrap(ffff8000230f8dd0,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff8000230f8dd0) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffd5460, count: -8