kernel: protection fault trap, code=0 Stopped at sblock+0x4a: movq 0x8(%rax),%rax ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace sblock(fffffd806f05a388,fffffd806f05a4a0,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd806f05a388,fffffd806f05a4a0,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd806f05a388,0,ffff8000215ef830,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff8000215ef780) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd8072bfac10,ffff8000215ef830,3,fffffd807f7d8a80) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff8548,fffffd8072bfac10,fffffd807f7d8a80,ffff8000215ef8f8,ffff8000215ef8d0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff8000ffff8548,4,1,ffff8000006c3eb0,334) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff8000ffff8548,4,1,ffff8000006c3eb0,334) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilewritev(ffff8000ffff8548,4,ffff8000215efa78,0,ffff8000215efb70) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_write(ffff8000ffff8548,ffff8000215efb10,ffff8000215efb70) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff8000215efbe0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc5f80, count: -10 ddb> show registers rdi 0 rsi 0 rbp 0xffff8000215ef640 rbx 0xfffffd806f05a4a0 rdx 0 rcx 0xffff8000ffff854c rax 0x63ed3c5d1bc05784 r8 0 r9 0 r10 0x4f48dd605c48695e r11 0xb9e438c3ff15a7e2 r12 0xfffffd806f05a301 r13 0x1 r14 0xfffffd806f05a4f0 r15 0xfffffd806f05a388 rip 0xffffffff81a312ba sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000215ef5e0 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb> show proc PROC (sshd) pid=18246 stat=onproc flags process=12 proc=1 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021616fd0,0xffff8000ffff87f8 process=0xffff8000216187e8 user=0xffff8000215ea000, vmspace=0xfffffd806e181ee8 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 2171 165076 36296 0 3 0x80 nanoslp syz-executor.2 2171 322442 36296 0 3 0x4000080 kqsel syz-executor.2 2171 104033 36296 0 3 0x4000080 fsleep syz-executor.2 97843 95807 17077 0 2 0x83 syz-executor.5 67636 460349 17077 0 3 0x82 piperd syz-executor.7 23519 171643 17077 0 3 0x82 piperd syz-executor.6 78703 145420 17077 0 3 0x82 piperd syz-executor.0 74071 414145 1 0 3 0x100083 ttyin getty 77831 133768 17077 0 3 0x82 piperd syz-executor.4 99322 211012 17077 0 3 0x82 nanoslp syz-executor.3 36258 50045 0 0 3 0x14280 nfsidl nfsio 3587 519298 0 0 3 0x14280 nfsidl nfsio 46289 116290 0 0 3 0x14280 nfsidl nfsio 13196 469503 0 0 3 0x14280 nfsidl nfsio 51600 155732 0 0 3 0x14280 nfsidl nfsio 62927 422569 0 0 3 0x14280 nfsidl nfsio 82884 236382 0 0 3 0x14280 nfsidl nfsio 71948 485805 0 0 3 0x14280 nfsidl nfsio 91059 426326 0 0 3 0x14280 nfsidl nfsio 52587 64261 0 0 3 0x14280 nfsidl nfsio 25189 241671 0 0 3 0x14280 nfsidl nfsio 4704 115736 0 0 3 0x14280 nfsidl nfsio 72221 127524 0 0 3 0x14280 nfsidl nfsio 27660 436343 0 0 3 0x14280 nfsidl nfsio 36296 450713 17077 0 3 0x82 nanoslp syz-executor.2 49063 485492 0 0 3 0x14280 nfsidl nfsio 90730 103232 0 0 3 0x14280 nfsidl nfsio 73786 190527 0 0 3 0x14280 nfsidl nfsio 81997 266480 0 0 3 0x14280 nfsidl nfsio 87986 348996 0 0 3 0x14280 nfsidl nfsio 45400 436679 0 0 3 0x14280 nfsidl nfsio 64035 53671 0 0 3 0x14200 bored sosplice 17077 303541 53746 0 2 0x83 syz-fuzzer 17077 189416 53746 0 3 0x4000082 thrsleep syz-fuzzer 17077 274636 53746 0 2 0x4000083 syz-fuzzer 17077 341443 53746 0 3 0x4000082 thrsleep syz-fuzzer 17077 167183 53746 0 3 0x4000082 thrsleep syz-fuzzer 17077 372111 53746 0 2 0x4000083 syz-fuzzer 17077 452585 53746 0 2 0x4000083 syz-fuzzer 17077 382886 53746 0 3 0x4000082 thrsleep syz-fuzzer 17077 328411 53746 0 2 0x4000083 syz-fuzzer 17077 27881 53746 0 3 0x4000082 kqread syz-fuzzer 53746 413888 11777 0 3 0x10008a sigsusp ksh *11777 18246 91301 0 7 0x13 sshd 91301 370641 1 0 3 0x88 kqread sshd 75241 273591 39182 73 2 0x1100091 syslogd 39182 414531 1 0 3 0x100082 netio syslogd 89280 264421 1 0 3 0x100080 kqread resolvd 63003 264875 70450 77 3 0x100092 kqread dhcpleased 15381 130709 70450 77 3 0x100092 kqread dhcpleased 70450 410394 1 0 3 0x80 kqread dhcpleased 35152 268926 0 0 3 0x14200 bored smr 72823 74067 0 0 2 0x14200 zerothread 73479 357538 0 0 3 0x14200 aiodoned aiodoned 9017 21951 0 0 3 0x14200 syncer update 91556 237908 0 0 3 0x14200 cleaner cleaner 79726 241121 0 0 3 0x14200 reaper reaper 41869 35371 0 0 3 0x14200 pgdaemon pagedaemon 53399 311178 0 0 3 0x14200 bored viomb 64500 324550 0 0 3 0x40014200 acpi0 acpi0 52359 331318 0 0 3 0x14200 bored softnet 43660 63696 0 0 3 0x14200 bored systqmp 34154 29428 0 0 3 0x14200 bored systq 93570 97864 0 0 3 0x40014200 bored softclock 57161 280952 0 0 3 0x40014200 idle0 1 91914 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10211 6500K 7790K 78643K 91236 0 pcb 14 18K 20K 78643K 3210 0 rtable 160 6K 9K 78643K 5318 0 ifaddr 75 19K 21K 78643K 1492 0 sysctl 3 1K 1K 78643K 5 0 counters 25 17K 17K 78643K 240 0 ioctlops 0 0K 4K 78643K 4895 0 iov 0 0K 32K 78643K 1982 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1587 99K 99K 78643K 24365 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 189 0 VM map 2 0K 0K 78643K 2 0 sem 14 16K 32K 78643K 125 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 10 33K 77K 78643K 21520 0 sigio 0 0K 0K 78643K 169 0 proc 70 55K 79K 78643K 2489 0 subproc 91 5K 6K 78643K 776 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1765 0 in_multi 69 4K 7K 78643K 4143 0 ether_multi 1 0K 0K 78643K 841 0 mrt 1 0K 0K 78643K 66 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 265 1182K 1182K 78643K 265 0 exec 0 0K 2K 78643K 4804 0 tdb 3 0K 0K 78643K 3 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 582 1387K 1923K 78643K 263281 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1094 0 NDP 11 0K 1K 78643K 634 0 temp 145 4710K 5347K 78643K 171835 0 kqueue 13 20K 30K 78643K 2335 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 1426 0 1423 16 15 1 5 0 8 0 rtentry 112 2106 0 2040 4 1 3 4 0 8 0 unpcb 136 11016 0 11003 128 127 1 8 0 8 0 syncache 296 63 0 63 20 20 0 1 0 8 0 sackhl 24 1 1 1 1 1 0 1 0 8 0 tcpqe 32 8 0 8 4 4 0 1 0 8 0 tcpcb 736 9531 0 9527 283 282 1 17 0 8 0 arp 88 144 0 132 1 0 1 1 0 8 0 ipq 40 149 0 149 10 10 0 1 0 8 0 ipqe 40 384 0 384 10 10 0 1 0 8 0 inpcb 304 25547 0 25539 297 295 2 14 0 8 1 rttmr 72 21 0 21 6 6 0 1 0 8 0 ip6q 72 81 0 81 7 7 0 1 0 8 0 ip6af 40 157 0 157 7 7 0 1 0 8 0 nd6 48 487 0 471 1 0 1 1 0 8 0 pkpcb 40 319 0 319 13 13 0 1 0 8 0 kcovpl 48 59 0 52 1 0 1 1 0 8 0 ppxss 1152 49 0 49 8 8 0 1 0 8 0 pfstscr 40 67 0 67 1 1 0 1 0 8 0 pfrktable 1344 31 0 29 2 1 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstkey 112 134 0 134 1 1 0 1 0 8 0 pfstate 320 67 0 67 1 1 0 1 0 8 0 pfrule 1360 61 0 58 4 3 1 1 0 8 0 art_heap8 4096 3 0 2 3 2 1 2 0 8 0 art_heap4 256 10979 0 10688 57 33 24 29 0 8 2 art_table 32 10982 0 10690 7 3 4 4 0 8 0 art_node 16 2094 0 2037 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 0 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 98 0 86 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 29671 0 28165 95 0 95 95 0 8 0 ffsino 240 29671 0 28165 90 0 90 90 0 8 0 nchpl 144 57297 0 55694 62 0 62 62 0 8 0 uvmvnodes 80 6030 0 0 124 0 124 124 0 8 0 vnodes 224 6030 0 0 355 0 355 355 0 8 0 namei 1024 210123 0 210123 7 6 1 2 0 8 1 vcpupl 1984 129 0 1 16 0 16 16 0 8 0 vmpool 528 413 0 285 13 4 9 9 0 8 0 pfiaddrpl 120 11 0 8 2 1 1 1 0 8 0 scsiplug 72 4 0 4 1 1 0 1 0 8 0 scxspl 216 173382 0 173382 39 37 2 8 0 8 2 plimitpl 152 2125 0 2112 1 0 1 1 0 8 0 sigapl 424 21730 0 21674 9 1 8 8 0 8 0 futexpl 64 273413 0 273412 4 3 1 1 0 8 0 knotepl 120 194518 0 194439 32 29 3 10 0 8 0 kqueuepl 184 6620 0 6611 78 77 1 7 0 8 0 pipepl 304 8594 0 8569 171 166 5 12 0 8 2 fdescpl 432 21693 0 21672 5 1 4 4 0 8 0 filepl 120 160437 0 160221 214 204 10 21 0 8 0 lockfpl 104 5403 0 5401 13 12 1 2 0 8 0 lockfspl 48 1454 0 1452 1 0 1 1 0 8 0 sessionpl 144 77 0 62 1 0 1 1 0 8 0 pgrppl 48 131 0 116 1 0 1 1 0 8 0 ucredpl 96 15537 0 15526 1 0 1 1 0 8 0 zombiepl 144 21675 0 21674 2 1 1 1 0 8 0 processpl 1000 21730 0 21674 10 1 9 9 0 8 0 procpl 672 54412 0 54345 45 37 8 9 0 8 1 sosppl 168 158 0 158 30 30 0 1 0 8 0 sockpl 448 38370 0 38346 644 640 4 25 0 8 0 mcl64k 65536 687 0 687 42 42 0 1 0 8 0 mcl16k 16384 201 0 201 39 39 0 1 0 8 0 mcl12k 12288 617 0 617 41 41 0 1 0 8 0 mcl9k 9216 394 0 394 54 54 0 1 0 8 0 mcl8k 8192 1576 0 1576 25 24 1 1 0 8 1 mcl4k 4096 4453 0 4453 12 11 1 1 0 8 1 mcl2k2 2112 185 0 185 54 53 1 1 0 8 1 mcl2k 2048 120967 0 120881 77 61 16 34 0 8 0 mtagpl 96 17704 0 16757 83 54 29 43 0 8 0 mbufpl 256 354720 0 353506 676 582 94 332 0 8 0 bufpl 288 39401 0 32992 458 0 458 458 0 8 0 anonpl 24 6071298 0 6055134 379 236 143 156 0 188 1 amapchunkpl 152 760160 0 759450 1710 1624 86 664 0 158 50 amappl16 200 62650 0 61760 281 231 50 61 0 8 2 amappl15 192 2349 0 2345 1 0 1 1 0 8 0 amappl14 184 5901 0 5898 1 0 1 1 0 8 0 amappl13 176 722 0 721 1 0 1 1 0 8 0 amappl12 168 4079 0 4076 2 1 1 1 0 8 0 amappl11 160 2518 0 2503 1 0 1 1 0 8 0 amappl10 152 1948 0 1941 1 0 1 1 0 8 0 amappl9 144 3208 0 3205 1 0 1 1 0 8 0 amappl8 136 4472 0 4327 7 1 6 6 0 8 0 amappl7 128 2795 0 2784 1 0 1 1 0 8 0 amappl6 120 3054 0 3028 2 1 1 2 0 8 0 amappl5 112 19892 0 19879 1 0 1 1 0 8 0 amappl4 104 6976 0 6945 2 0 2 2 0 8 0 amappl3 96 5625 0 5602 1 0 1 1 0 8 0 amappl2 88 3781 0 3725 3 1 2 3 0 8 0 amappl1 80 385745 0 385275 18 5 13 18 0 8 0 amappl 88 261245 0 260964 12 3 9 9 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 22106 0 21957 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 22106 0 21957 1 0 1 1 0 8 0 vmmpekpl 168 162165 0 162085 5 1 4 4 0 8 0 vmmpepl 168 1964364 0 1961704 545 399 146 168 0 357 1 vmsppl 272 22105 0 21957 12 1 11 11 0 8 0 rwobjpl 24 464503 0 456420 57 6 51 52 0 8 0 pdppl 4096 44218 0 44042 950 764 186 192 0 8 10 pvpl 32 10412372 0 10393277 740 517 223 276 0 265 5 pmappl 216 22105 0 21957 10 1 9 9 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 3480 0 2492 41 9 32 33 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sblock(fffffd806f05a388,fffffd806f05a4a0,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd806f05a388,fffffd806f05a4a0,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd806f05a388,0,ffff8000215ef830,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff8000215ef780) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd8072bfac10,ffff8000215ef830,3,fffffd807f7d8a80) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff8548,fffffd8072bfac10,fffffd807f7d8a80,ffff8000215ef8f8,ffff8000215ef8d0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff8000ffff8548,4,1,ffff8000006c3eb0,334) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff8000ffff8548,4,1,ffff8000006c3eb0,334) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilewritev(ffff8000ffff8548,4,ffff8000215efa78,0,ffff8000215efb70) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_write(ffff8000ffff8548,ffff8000215efb10,ffff8000215efb70) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff8000215efbe0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc5f80, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace sblock(fffffd806f05a388,fffffd806f05a4a0,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd806f05a388,fffffd806f05a4a0,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd806f05a388,0,ffff8000215ef830,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff8000215ef780) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd8072bfac10,ffff8000215ef830,3,fffffd807f7d8a80) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff8548,fffffd8072bfac10,fffffd807f7d8a80,ffff8000215ef8f8,ffff8000215ef8d0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff8000ffff8548,4,1,ffff8000006c3eb0,334) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff8000ffff8548,4,1,ffff8000006c3eb0,334) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilewritev(ffff8000ffff8548,4,ffff8000215efa78,0,ffff8000215efb70) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_write(ffff8000ffff8548,ffff8000215efb10,ffff8000215efb70) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff8000215efbe0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc5f80, count: -10