uvm_fault(0xffffffff828b1c50, 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(0xffffffff828b1c50, 0xfffffd0000000008, 0, 2) -> e soreceive(fffffd806f6844b0,0,ffff800020e1e7c8,0,0,ffff800020e1e6d4) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f6844b0,0,ffff800020e1e7c8,0,0,ffff800020e1e6d4) at soreceive+0x1100 sys/kern/uipc_socket.c:855 end trace frame: 0xffff800020e1e710, count: 0 ddb{0}> trace soreceive(fffffd806f6844b0,0,ffff800020e1e7c8,0,0,ffff800020e1e6d4) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f6844b0,0,ffff800020e1e7c8,0,0,ffff800020e1e6d4) at soreceive+0x1100 sys/kern/uipc_socket.c:855 soo_read(fffffd80741f74c0,ffff800020e1e7c8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddd118,6,ffff800020e1e7c8,0,ffff800020e1e8b0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddd118,ffff800020e1e860,ffff800020e1e8b0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e930) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e930) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1890, count: -6 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020e1e6b0 rbx 0xfffffd8067087800 rdx 0x5b806 acpi_pdirpa+0x4766e rcx 0 rax 0 r8 0xffffffff81297151 soreceive+0x5c1 r9 0x3 r10 0x6bff0240ccfb6e62 r11 0x549a193d7182838c r12 0x7ca r13 0xfffffd0000000000 r14 0 r15 0xfffffd806f6844b0 rip 0xffffffff81297c90 soreceive+0x1100 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020e1e5c0 ss 0x10 soreceive+0x1100: movq %rbx,0x8(%r13) ddb{0}> show proc PROC (dhclient) pid=127714 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddc008,0xffff800020ddd398 process=0xffff800020df0010 user=0xffff800020e19000, vmspace=0xfffffd807f000000 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 36832 80943 70025 0 7 0 syz-executor.0 36832 42168 70025 0 3 0x4000080 fsleep syz-executor.0 53742 378884 0 0 3 0x14200 bored sosplice 37695 459758 22505 0 2 0x482 syz-executor.1 70025 348817 22505 0 3 0x82 nanosleep syz-executor.0 22505 341992 16391 0 3 0x82 kqread syz-fuzzer 22505 38494 16391 0 3 0x4000082 nanosleep syz-fuzzer 22505 403382 16391 0 3 0x4000082 thrsleep syz-fuzzer 22505 139045 16391 0 3 0x4000082 thrsleep syz-fuzzer 22505 22189 16391 0 3 0x4000082 thrsleep syz-fuzzer 22505 69275 16391 0 3 0x4000082 thrsleep syz-fuzzer 22505 451234 16391 0 3 0x4000082 thrsleep syz-fuzzer 22505 264131 16391 0 3 0x4000082 thrsleep syz-fuzzer 22505 265954 16391 0 3 0x4000082 thrsleep syz-fuzzer 22505 44805 16391 0 3 0x4000082 thrsleep syz-fuzzer 16391 314680 42407 0 3 0x10008a pause ksh 42407 260215 53928 0 3 0x92 select sshd 70582 419025 1 0 3 0x100083 ttyin getty 53928 127079 1 0 3 0x80 select sshd 44432 378927 14514 74 3 0x100092 bpf pflogd 14514 247457 1 0 3 0x80 netio pflogd 55592 506112 76935 73 3 0x100090 kqread syslogd 76935 2323 1 0 3 0x100082 netio syslogd 57022 51554 1 77 3 0x100090 poll dhclient *97182 127714 1 0 7 0 dhclient 11412 493396 0 0 3 0x14200 bored smr 25718 20321 0 0 3 0x14200 pgzero zerothread 9858 252978 0 0 3 0x14200 aiodoned aiodoned 51417 150252 0 0 3 0x14200 syncer update 3685 502616 0 0 3 0x14200 cleaner cleaner 31114 269124 0 0 3 0x14200 reaper reaper 96354 314996 0 0 3 0x14200 pgdaemon pagedaemon 89323 455158 0 0 3 0x14200 bored crynlk 23421 380651 0 0 3 0x14200 bored crypto 40117 186756 0 0 3 0x40014200 acpi0 acpi0 87039 185369 0 0 3 0x40014200 idle1 348 48944 0 0 3 0x14200 bored softnet 68899 210234 0 0 3 0x14200 bored systqmp 87518 165940 0 0 3 0x14200 bored systq 98428 492384 0 0 3 0x40014200 bored softclock 77549 141794 0 0 3 0x40014200 idle0 1 358895 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 97182 (dhclient) thread 0xffff800020ddd118 (127714) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8290c2b8) #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 9563 6747K 6995K 78643K 11456 0 pcb 14 8K 8K 78643K 57 0 rtable 99 6K 7K 78643K 349 0 ifaddr 86 15K 17K 78643K 136 0 counters 43 33K 34K 78643K 53 0 ioctlops 0 0K 4K 78643K 1516 0 iov 0 0K 18K 78643K 37 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1450 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 9 1K 1K 78643K 11 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 274 0 sigio 0 0K 0K 78643K 11 0 proc 61 63K 95K 78643K 443 0 subproc 32 2K 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 38 0 in_multi 40 2K 2K 78643K 101 0 ether_multi 1 0K 0K 78643K 7 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 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 219 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 55K 55K 78643K 1854 0 UVM aobj 9 2K 2K 78643K 9 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 37 0 NDP 15 0K 0K 78643K 31 0 temp 119 3864K 3928K 78643K 4138 0 kqueue 3 4K 8K 78643K 14 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 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 29 0 27 1 0 1 1 0 8 0 rtentry 112 67 0 37 2 0 2 2 0 8 0 unpcb 120 95 0 85 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 22 0 22 1 1 0 1 0 8 0 tcpcb 544 315 0 310 1 0 1 1 0 8 0 inpcb 296 535 0 526 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 16 0 15 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 ppxss 1128 2 0 2 1 0 1 1 0 8 1 pffrag 232 4 0 3 1 0 1 1 0 482 0 pffrnode 88 4 0 3 1 0 1 1 0 8 0 pffrent 40 53 0 52 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 17 0 12 1 0 1 1 0 8 0 pfstitem 24 30 0 2 1 0 1 1 0 8 0 pfstkey 112 30 0 2 1 0 1 1 0 8 0 pfstate 328 30 0 2 3 0 3 3 0 8 0 pfrule 1360 29 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 298 0 170 14 1 13 14 0 8 4 art_table 32 299 0 170 2 0 2 2 0 8 0 art_node 16 64 0 36 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 11 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 9 0 2 1 0 1 1 0 8 0 shmpl 112 6 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1771 0 371 89 0 89 89 0 8 0 ffsino 272 1771 0 371 95 0 95 95 0 8 1 nchpl 144 2321 0 712 60 0 60 60 0 8 0 uvmvnodes 72 2001 0 0 37 0 37 37 0 8 0 vnodes 208 2001 0 0 106 0 106 106 0 8 0 namei 1024 6467 0 6467 1 0 1 1 0 8 1 percpumem 16 37 0 5 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 7 0 3 1 0 1 1 0 8 0 scxspl 192 6745 0 6745 8 1 7 7 0 8 7 plimitpl 152 41 0 33 1 0 1 1 0 8 0 sigapl 424 490 0 458 4 0 4 4 0 8 0 futexpl 56 4152 0 4151 1 0 1 1 0 8 0 knotepl 112 72 0 53 1 0 1 1 0 8 0 kqueuepl 144 31 0 29 1 0 1 1 0 8 0 pipepl 304 102 0 91 2 0 2 2 0 8 1 fdescpl 496 474 0 458 4 1 3 3 0 8 0 filepl 152 2758 0 2653 5 0 5 5 0 8 0 lockfpl 104 76 0 75 1 0 1 1 0 8 0 lockfspl 48 24 0 23 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 234 0 225 1 0 1 1 0 8 0 zombiepl 144 458 0 457 1 0 1 1 0 8 0 processpl 992 490 0 457 5 0 5 5 0 8 0 procpl 624 1072 0 1029 4 0 4 4 0 8 0 sosppl 128 4 0 4 1 0 1 1 0 8 1 sockpl 400 663 0 642 4 0 4 4 0 8 1 mcl64k 65536 6 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 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 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 164 0 0 20 0 20 20 0 8 0 mtagpl 96 103 0 0 3 0 3 3 0 8 0 mbufpl 256 411 0 0 26 0 26 26 0 8 0 bufpl 280 3694 0 136 255 0 255 255 0 8 0 anonpl 16 62251 0 45258 76 6 70 75 0 124 1 amapchunkpl 152 2476 0 2325 8 1 7 8 0 158 0 amappl16 192 2472 0 1554 52 5 47 51 0 8 0 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 24 0 21 1 0 1 1 0 8 0 amappl13 168 39 0 34 1 0 1 1 0 8 0 amappl12 160 10 0 9 1 0 1 1 0 8 0 amappl11 152 58 0 43 1 0 1 1 0 8 0 amappl10 144 133 0 126 1 0 1 1 0 8 0 amappl9 136 517 0 514 1 0 1 1 0 8 0 amappl8 128 345 0 311 2 0 2 2 0 8 0 amappl7 120 228 0 217 1 0 1 1 0 8 0 amappl6 112 23 0 19 2 1 1 1 0 8 0 amappl5 104 369 0 353 1 0 1 1 0 8 0 amappl4 96 490 0 460 1 0 1 1 0 8 0 amappl3 88 116 0 111 1 0 1 1 0 8 0 amappl2 80 2847 0 2778 2 0 2 2 0 8 0 amappl1 72 20109 0 19673 23 13 10 18 0 8 0 amappl 80 1331 0 1284 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 8 0 0 1 0 1 1 0 8 0 uaddrrnd 24 478 0 460 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 478 0 460 1 0 1 1 0 8 0 vmmpekpl 168 7427 0 7390 3 1 2 2 0 8 0 vmmpepl 168 65051 0 62976 115 13 102 112 0 357 8 vmsppl 368 477 0 460 2 0 2 2 0 8 0 pdppl 4096 963 0 922 6 0 6 6 0 8 0 pvpl 32 196974 0 176831 180 5 175 180 0 265 11 pmappl 232 477 0 460 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 274 0 4 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace soreceive(fffffd806f6844b0,0,ffff800020e1e7c8,0,0,ffff800020e1e6d4) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f6844b0,0,ffff800020e1e7c8,0,0,ffff800020e1e6d4) at soreceive+0x1100 sys/kern/uipc_socket.c:855 soo_read(fffffd80741f74c0,ffff800020e1e7c8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddd118,6,ffff800020e1e7c8,0,ffff800020e1e8b0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddd118,ffff800020e1e860,ffff800020e1e8b0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e930) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e930) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1890, 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(924ad,924ae) at __sanitizer_cov_trace_cmp4+0x5d kd_curproc sys/dev/kcov.c:416 [inline] __sanitizer_cov_trace_cmp4(924ad,924ae) at __sanitizer_cov_trace_cmp4+0x5d trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(924ad,924ae) at __sanitizer_cov_trace_cmp4+0x5d sys/dev/kcov.c:135 __mp_lock(ffffffff8290c0b0) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8290c0b0) at __mp_lock+0x139 sys/kern/kern_lock.c:147 pageflttrap(ffff800021f128e0,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800021f128e0) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffcaaa0, count: -8