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(fffffd8078330e40,fffffd8078330f58,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8078330e40,fffffd8078330f58,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd8078330e40,0,ffff80002e915050,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff80002e914fa0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd805e1533b8,ffff80002e915050,3,fffffd807f7d7840) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002cda2fc0,fffffd805e1533b8,fffffd807f7d7840,ffff80002e915118,ffff80002e9150f0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff80002cda2fc0,f8,1,ffff800000e06090,c) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff80002cda2fc0,f8,1,ffff800000e06090,c) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilewritev(ffff80002cda2fc0,f8,ffff80002e915298,0,ffff80002e915390) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_write(ffff80002cda2fc0,ffff80002e915330,ffff80002e915390) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff80002e915400) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, count: -10 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002e914e60 rbx 0xfffffd8078330f58 rdx 0 rcx 0xffff80002cda2fc4 rax 0x6e4b46cfee230fdf r8 0 r9 0 r10 0xa2366a1903ebe23d r11 0x7d3db784005b9adf r12 0xfffffd8078330e01 r13 0x1 r14 0xfffffd8078330fa8 r15 0xfffffd8078330e40 rip 0xffffffff82241b1a sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002e914e00 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb> show proc PROC (syz-executor.2) pid=288522 stat=onproc flags process=2 proc=1 pri=24, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff80002169ca88,0xffff800021610aa0 process=0xffff80002168d7a0 user=0xffff80002e910000, vmspace=0xfffffd8068ccf668 estcpu=32, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 22720 520807 19034 0 2 0 syz-executor.5 22720 250574 19034 0 2 0x4000000 syz-executor.5 73517 145136 80607 0 2 0 syz-executor.6 73517 33163 80607 0 2 0x4000000 syz-executor.6 91033 70545 32350 0 3 0x80 nanoslp syz-executor.7 91033 289427 32350 0 3 0x4000080 netio syz-executor.7 55720 330337 68797 0 2 0 syz-executor.1 55720 377819 68797 0 3 0x4000080 netio syz-executor.1 55720 472038 68797 0 3 0x4000080 fsleep syz-executor.1 92840 22601 56296 0 3 0x80 nanoslp syz-executor.4 92840 495921 56296 0 3 0x4000080 fifor syz-executor.4 92840 86826 56296 0 3 0x4000080 fifor syz-executor.4 92840 181199 56296 0 3 0x4000080 fsleep syz-executor.4 *39268 288522 61917 0 7 0x3 syz-executor.2 56296 331200 61917 0 3 0x82 nanoslp syz-executor.4 78010 512081 0 0 3 0x14200 acct acct 32350 203887 61917 0 3 0x82 nanoslp syz-executor.7 19034 271928 61917 0 3 0x82 nanoslp syz-executor.5 80607 129704 61917 0 3 0x82 nanoslp syz-executor.6 68797 122246 61917 0 3 0x82 nanoslp syz-executor.1 98456 337251 1 0 3 0x100083 ttyin getty 26183 125498 61917 0 3 0x82 nanoslp syz-executor.3 12657 383472 0 0 3 0x14200 bored sosplice 61917 40637 56289 0 2 0x2 syz-fuzzer 61917 24656 56289 0 3 0x4000082 nanoslp syz-fuzzer 61917 144586 56289 0 3 0x4000082 thrsleep syz-fuzzer 61917 47476 56289 0 3 0x4000082 thrsleep syz-fuzzer 61917 326606 56289 0 3 0x4000082 thrsleep syz-fuzzer 61917 458791 56289 0 3 0x4000082 thrsleep syz-fuzzer 61917 357981 56289 0 2 0x4000083 syz-fuzzer 61917 39144 56289 0 3 0x4000082 thrsleep syz-fuzzer 56289 236519 92646 0 3 0x10008a sigsusp ksh 92646 95394 24491 0 3 0x9a kqread sshd 24491 136748 1 0 3 0x88 kqread sshd 83746 71081 15523 73 3 0x1100090 kqread syslogd 15523 514338 1 0 3 0x100082 netio syslogd 21695 522922 1 0 3 0x100080 kqread resolvd 56122 228266 99074 77 3 0x100092 kqread dhcpleased 83536 61892 99074 77 3 0x100092 kqread dhcpleased 99074 246156 1 0 3 0x80 kqread dhcpleased 39842 412896 0 0 3 0x14200 bored smr 34743 26477 0 0 2 0x14200 zerothread 55223 486499 0 0 3 0x14200 aiodoned aiodoned 82876 465227 0 0 3 0x14200 syncer update 34107 369559 0 0 3 0x14200 cleaner cleaner 81784 241630 0 0 3 0x14200 reaper reaper 50731 212396 0 0 3 0x14200 pgdaemon pagedaemon 23389 77759 0 0 3 0x14200 bored viomb 62816 305578 0 0 3 0x40014200 acpi0 acpi0 14444 16258 0 0 3 0x14200 bored softnet 51148 321326 0 0 3 0x14200 bored softnet 79232 277371 0 0 3 0x14200 bored softnet 7566 424157 0 0 3 0x14200 bored softnet 14189 87572 0 0 3 0x14200 bored systqmp 17527 95212 0 0 3 0x14200 bored systq 26836 504106 0 0 3 0x40014200 bored softclock 5128 158805 0 0 3 0x40014200 idle0 1 57054 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 10194 6492K 8581K 78643K 26999 0 pcb 13 20K 22K 78643K 566 0 rtable 208 18K 23K 78643K 3512 0 ifaddr 89 22K 25K 78643K 1501 0 sysctl 2 0K 2K 78643K 6 0 counters 25 17K 17K 78643K 146 0 ioctlops 0 0K 4K 78643K 8432 0 iov 0 0K 24K 78643K 982 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1500 94K 94K 78643K 6151 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 65 0 VM map 2 0K 0K 78643K 2 0 sem 18 2K 3K 78643K 43 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 81K 78643K 7783 0 sigio 0 0K 0K 78643K 164 0 proc 60 59K 83K 78643K 1660 0 subproc 91 5K 6K 78643K 520 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 383 0 in_multi 81 5K 7K 78643K 558 0 ether_multi 1 0K 0K 78643K 26 0 mrt 1 0K 0K 78643K 10 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 181 811K 811K 78643K 181 0 exec 0 0K 2K 78643K 2637 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 581 1857K 2505K 78643K 44066 0 UVM aobj 131 9K 9K 78643K 141 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 411 0 NDP 11 0K 1K 78643K 212 0 temp 147 4771K 21154K 78643K 189081 0 kqueue 13 20K 28K 78643K 587 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 1375 0 1371 12 11 1 3 0 8 0 rtentry 112 527 0 443 6 2 4 4 0 8 0 unpcb 136 6999 0 6980 82 76 6 9 0 8 5 syncache 296 70 0 70 15 15 0 1 0 8 0 tcpqe 32 14 0 14 6 6 0 1 0 8 0 tcpcb 736 3083 0 3079 91 86 5 19 0 8 4 arp 88 98 0 82 1 0 1 1 0 8 0 ipq 40 3 0 3 1 1 0 1 0 8 0 ipqe 40 9 0 9 1 1 0 1 0 8 0 inpcb 312 7324 0 7311 142 138 4 17 0 8 2 nd6 48 124 0 105 1 0 1 1 0 8 0 pkpcb 40 52 0 52 6 5 1 1 0 8 1 kcovpl 48 40 0 33 1 0 1 1 0 8 0 ppxss 1152 30 0 30 6 6 0 1 0 8 0 pfstscr 40 209 0 199 1 0 1 1 0 8 0 pfosfp 40 8 0 6 1 0 1 1 0 8 0 pfosfpen 112 8 0 0 1 0 1 1 0 8 0 pfrktable 1344 432 0 424 6 5 1 2 0 8 0 pftag 88 30 0 24 1 0 1 1 0 8 0 pfstitem 24 20 0 6 1 0 1 1 0 8 0 pfstkey 112 284 0 279 1 0 1 1 0 8 0 pfstate 336 142 0 135 1 0 1 1 0 8 0 pfrule 1360 659 0 612 10 6 4 5 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2113 0 1732 45 16 29 31 0 8 0 art_table 32 2114 0 1732 4 0 4 4 0 8 0 art_node 16 526 0 453 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 5 1 0 1 1 0 8 0 semapl 112 32 0 16 1 0 1 1 0 8 0 shmpl 112 138 0 10 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 11916 0 10446 93 0 93 93 0 8 0 ffsino 240 11916 0 10446 87 0 87 87 0 8 0 nchpl 144 23197 0 21574 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 89433 0 89433 7 6 1 2 0 8 1 vcpupl 1984 514 0 2 65 0 65 65 0 8 0 vmpool 528 514 0 2 35 0 35 35 0 8 0 pfiaddrpl 120 176 0 162 4 3 1 1 0 8 0 kstatmem 264 264 0 242 3 1 2 3 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 69777 0 69777 32 31 1 8 0 8 1 plimitpl 152 1010 0 997 1 0 1 1 0 8 0 sigapl 424 8007 0 7963 6 0 6 6 0 8 0 futexpl 64 84607 0 84605 7 6 1 1 0 8 0 knotepl 120 89796 0 89717 61 55 6 10 0 8 2 kqueuepl 184 2514 0 2502 32 31 1 7 0 8 0 pipepl 304 2656 0 2630 64 56 8 12 0 8 5 fdescpl 432 7988 0 7963 4 0 4 4 0 8 0 filepl 120 66236 0 66010 93 81 12 17 0 8 2 lockfpl 104 2189 0 2187 7 5 2 2 0 8 1 lockfspl 48 494 0 492 1 0 1 1 0 8 0 sessionpl 144 56 0 41 1 0 1 1 0 8 0 pgrppl 48 122 0 107 1 0 1 1 0 8 0 ucredpl 96 8100 0 8085 1 0 1 1 0 8 0 zombiepl 144 7964 0 7963 4 3 1 1 0 8 0 processpl 1000 8007 0 7963 8 2 6 7 0 8 0 procpl 672 20131 0 20072 20 13 7 7 0 8 1 sosppl 168 60 0 60 13 12 1 1 0 8 1 sockpl 448 15759 0 15729 389 378 11 30 0 8 6 pool(sockpl): free list modified: page 0xfffffd8078330000; item ordinal 1; addr 0xfffffd8078330e40 (p 0xfffffd805b67a000); offset 0x10=0xdead9eef mcl64k 65536 225 0 225 13 12 1 1 0 8 1 mcl16k 16384 88 0 88 21 21 0 1 0 8 0 mcl12k 12288 223 0 223 17 16 1 1 0 8 1 mcl9k 9216 68 0 68 17 17 0 1 0 8 0 mcl8k 8192 412 0 412 15 14 1 1 0 8 1 mcl4k 4096 1290 0 1287 5 4 1 1 0 8 0 mcl2k2 2112 54 0 54 24 23 1 1 0 8 1 mcl2k 2048 82072 0 82019 19 11 8 10 0 8 0 mtagpl 96 2180 0 1809 25 13 12 17 0 8 0 mbufpl 256 192868 0 192229 379 322 57 300 0 8 0 bufpl 288 19944 0 13537 458 0 458 458 0 8 0 anonpl 24 1547175 0 1529171 275 150 125 152 0 188 0 amapchunkpl 152 268232 0 267595 1528 1427 101 656 0 158 71 amappl16 200 23479 0 22757 147 106 41 64 0 8 0 amappl15 192 1842 0 1841 1 0 1 1 0 8 0 amappl14 184 300 0 294 1 0 1 1 0 8 0 amappl13 176 1813 0 1811 1 0 1 1 0 8 0 amappl12 168 483 0 481 2 1 1 1 0 8 0 amappl11 160 387 0 371 1 0 1 1 0 8 0 amappl10 152 794 0 787 1 0 1 1 0 8 0 amappl9 144 1723 0 1718 1 0 1 1 0 8 0 amappl8 136 2175 0 2081 4 0 4 4 0 8 0 amappl7 128 1223 0 1206 1 0 1 1 0 8 0 amappl6 120 1622 0 1603 2 1 1 2 0 8 0 amappl5 112 6600 0 6584 1 0 1 1 0 8 0 amappl4 104 2098 0 2067 2 1 1 2 0 8 0 amappl3 96 23759 0 23716 2 0 2 2 0 8 0 amappl2 88 10201 0 10137 3 1 2 3 0 8 0 amappl1 80 187705 0 187108 26 11 15 19 0 8 0 amappl 88 42698 0 42437 7 0 7 7 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 72 140 0 10 3 0 3 3 0 8 0 uaddrrnd 24 8502 0 7965 4 0 4 4 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8502 0 7965 4 0 4 4 0 8 0 vmmpekpl 168 59593 0 59517 4 0 4 4 0 8 0 vmmpepl 168 783607 0 780116 275 104 171 196 0 357 0 vmsppl 272 8501 0 7965 38 1 37 37 0 8 0 rwobjpl 24 192336 0 184488 52 3 49 51 0 8 0 pdppl 4096 17010 0 16442 1001 425 576 578 0 8 8 pvpl 32 3049326 0 3028395 510 311 199 238 0 265 8 pmappl 216 8501 0 7965 31 0 31 31 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2821 0 1442 49 8 41 48 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sblock(fffffd8078330e40,fffffd8078330f58,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8078330e40,fffffd8078330f58,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd8078330e40,0,ffff80002e915050,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff80002e914fa0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd805e1533b8,ffff80002e915050,3,fffffd807f7d7840) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002cda2fc0,fffffd805e1533b8,fffffd807f7d7840,ffff80002e915118,ffff80002e9150f0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff80002cda2fc0,f8,1,ffff800000e06090,c) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff80002cda2fc0,f8,1,ffff800000e06090,c) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilewritev(ffff80002cda2fc0,f8,ffff80002e915298,0,ffff80002e915390) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_write(ffff80002cda2fc0,ffff80002e915330,ffff80002e915390) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff80002e915400) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace sblock(fffffd8078330e40,fffffd8078330f58,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8078330e40,fffffd8078330f58,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd8078330e40,0,ffff80002e915050,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff80002e914fa0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd805e1533b8,ffff80002e915050,3,fffffd807f7d7840) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002cda2fc0,fffffd805e1533b8,fffffd807f7d7840,ffff80002e915118,ffff80002e9150f0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff80002cda2fc0,f8,1,ffff800000e06090,c) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff80002cda2fc0,f8,1,ffff800000e06090,c) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilewritev(ffff80002cda2fc0,f8,ffff80002e915298,0,ffff80002e915390) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_write(ffff80002cda2fc0,ffff80002e915330,ffff80002e915390) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff80002e915400) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, count: -10