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(fffffd805ff06aa0,fffffd805ff06bb8,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd805ff06aa0,fffffd805ff06bb8,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd805ff06aa0,0,ffff800021657660,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:527 fifo_write(ffff8000216575b0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:288 VOP_WRITE(fffffd806cd135d8,ffff800021657660,3,fffffd807f7d8780) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002160e2b0,fffffd806cd135d8,fffffd807f7d8780,ffff800021657720,ffff800021657700) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff80002160e2b0,1,1,ffff8000006c3c10,2dcd) at ktrgenio+0x26b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff80002160e2b0,1,1,ffff8000006c3c10,2dcd) at ktrgenio+0x26b sys/kern/kern_ktrace.c:265 dofilewritev(ffff80002160e2b0,1,ffff8000216578a8,0,ffff8000216579a0) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_write(ffff80002160e2b0,ffff800021657940,ffff8000216579a0) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff800021657a10) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x223c1d060, count: -10 ddb> show registers rdi 0 rsi 0 rbp 0xffff800021657470 rbx 0xfffffd805ff06bb8 rdx 0 rcx 0xffff80002160e2b4 rax 0x5ceaf027f9e83123 r8 0 r9 0 r10 0xf60dbe69d6b4e91c r11 0xe841db2d6f37fc3b r12 0xfffffd805ff06a01 r13 0x1 r14 0xfffffd805ff06c08 r15 0xfffffd805ff06aa0 rip 0xffffffff815070ea sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021657410 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb> show proc PROC (syz-fuzzer) pid=144987 stat=onproc flags process=2 proc=4000001 pri=24, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80002160ed30,0xffff80002160fa60 process=0xffff8000215f0fb0 user=0xffff800021652000, vmspace=0xfffffd807f018330 estcpu=30, cpticks=0, pctcpu=0.32 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 49571 262586 95770 0 2 0 syz-executor.0 49571 114603 95770 0 3 0x4000080 fsleep syz-executor.0 49571 199985 95770 0 3 0x4000080 fsleep syz-executor.0 96410 181967 68245 0 2 0 syz-executor.5 96410 380537 68245 0 3 0x4000080 fsleep syz-executor.5 12830 44079 50471 0 2 0 syz-executor.7 12830 174070 50471 0 3 0x4000080 netcon2 syz-executor.7 11927 122298 36242 0 2 0 syz-executor.2 11927 224845 36242 0 3 0x4000080 netio syz-executor.2 11927 136333 36242 0 2 0x4000000 syz-executor.2 14725 489300 6572 0 3 0x82 nanoslp syz-executor.6 95770 53162 6572 0 3 0x82 nanoslp syz-executor.0 79938 468392 0 0 3 0x14200 acct acct 50471 122184 6572 0 3 0x82 nanoslp syz-executor.7 36242 123994 6572 0 3 0x82 nanoslp syz-executor.2 33912 4515 1 0 3 0x100083 ttyopn getty 83698 363940 6572 0 3 0x82 piperd syz-executor.1 68245 257686 6572 0 3 0x82 nanoslp syz-executor.5 47530 217600 6572 0 2 0x2 syz-executor.3 52724 318381 6572 0 3 0x82 piperd syz-executor.4 16846 11673 0 0 3 0x14280 nfsidl nfsio 49615 149492 0 0 3 0x14280 nfsidl nfsio 38572 476226 0 0 3 0x14280 nfsidl nfsio 94969 5224 0 0 3 0x14280 nfsidl nfsio 94396 219344 0 0 3 0x14280 nfsidl nfsio 20656 246595 0 0 3 0x14280 nfsidl nfsio 31027 269899 0 0 3 0x14200 bored sosplice 6572 268644 22482 0 3 0x82 thrsleep syz-fuzzer 6572 162545 22482 0 3 0x4000082 nanoslp syz-fuzzer * 6572 144987 22482 0 7 0x4000003 syz-fuzzer 6572 390376 22482 0 3 0x4000082 thrsleep syz-fuzzer 6572 225256 22482 0 3 0x4000082 thrsleep syz-fuzzer 6572 86436 22482 0 3 0x4000082 thrsleep syz-fuzzer 6572 107919 22482 0 3 0x4000082 thrsleep syz-fuzzer 6572 93477 22482 0 3 0x4000082 thrsleep syz-fuzzer 6572 276602 22482 0 3 0x4000082 thrsleep syz-fuzzer 22482 504809 20575 0 3 0x10008a sigsusp ksh 20575 433695 83175 0 2 0x93 sshd 83175 193353 1 0 3 0x88 kqread sshd 78342 424351 74305 73 3 0x100090 kqread syslogd 74305 320113 1 0 3 0x100082 netio syslogd 61891 435817 1 0 3 0x100080 kqread resolvd 18509 247104 51879 77 3 0x100092 kqread dhcpleased 49786 232083 51879 77 3 0x100092 kqread dhcpleased 51879 350534 1 0 3 0x80 kqread dhcpleased 3441 108097 0 0 3 0x14200 bored smr 45726 104332 0 0 2 0x14200 zerothread 65948 225837 0 0 3 0x14200 aiodoned aiodoned 9395 471279 0 0 3 0x14200 syncer update 23912 300056 0 0 3 0x14200 cleaner cleaner 9795 294244 0 0 3 0x14200 reaper reaper 51524 325313 0 0 3 0x14200 pgdaemon pagedaemon 94606 359640 0 0 3 0x14200 bored viomb 1776 343052 0 0 3 0x40014200 acpi0 acpi0 3530 49176 0 0 3 0x14200 bored softnet 71581 59863 0 0 3 0x14200 bored systqmp 9935 392957 0 0 3 0x14200 bored systq 21909 151252 0 0 3 0x40014200 bored softclock 90934 102825 0 0 3 0x40014200 idle0 1 114391 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 10237 6445K 7048K 78643K 29517 0 pcb 13 14K 16K 78643K 1688 0 rtable 133 13K 22K 78643K 4915 0 ifaddr 76 18K 24K 78643K 4689 0 sysctl 2 0K 0K 78643K 2 0 counters 27 17K 17K 78643K 175 0 ioctlops 0 0K 4K 78643K 16777 0 iov 0 0K 28K 78643K 1540 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1459 91K 92K 78643K 7788 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 119 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 1913 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 81K 78643K 12856 0 sigio 0 0K 0K 78643K 178 0 proc 67 55K 79K 78643K 2344 0 subproc 104 6K 6K 78643K 754 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 646 0 in_multi 55 3K 7K 78643K 1039 0 ether_multi 1 0K 0K 78643K 148 0 mrt 1 0K 0K 78643K 83 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 241 1076K 1076K 78643K 241 0 exec 0 0K 2K 78643K 3354 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 554 1221K 1813K 78643K 156483 0 UVM aobj 131 8K 8K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 722 0 NDP 12 0K 2K 78643K 289 0 temp 146 4711K 4793K 78643K 77056 0 kqueue 12 18K 28K 78643K 852 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 1243 0 1240 16 15 1 3 0 8 0 rtentry 112 859 0 808 4 1 3 4 0 8 0 unpcb 136 8186 0 8171 89 84 5 9 0 8 4 syncache 296 30 0 30 10 10 0 1 0 8 0 tcpqe 32 127 0 127 3 3 0 1 0 8 0 tcpcb 736 5790 0 5782 181 172 9 18 0 8 8 arp 88 121 0 112 1 0 1 1 0 8 0 ipq 40 78 0 78 5 5 0 1 0 8 0 ipqe 40 301 0 301 5 5 0 1 0 8 0 inpcb 304 13393 0 13385 171 162 9 12 0 8 8 rttmr 72 24 0 24 7 7 0 1 0 8 0 ip6q 72 7 0 6 3 2 1 1 0 8 0 ip6af 40 11 0 10 3 2 1 1 0 8 0 nd6 48 212 0 200 1 0 1 1 0 8 0 pkpcb 40 46 0 46 10 10 0 1 0 8 0 kcovpl 48 58 0 50 1 0 1 1 0 8 0 ppxss 1152 58 0 58 12 12 0 1 0 8 0 pfstscr 40 440 0 440 1 0 1 1 0 8 1 pfosfp 40 67 0 67 1 0 1 1 0 8 1 pfosfpen 112 67 0 67 2 0 2 2 0 8 2 pfrke_plain 168 30 0 30 3 2 1 1 0 8 1 pfrktable 1344 592 0 592 5 3 2 2 0 8 2 pftag 88 13 0 3 1 0 1 1 0 8 0 pfstitem 24 220 0 220 1 0 1 1 0 8 1 pfstkey 112 658 0 658 1 0 1 1 0 8 1 pfstate 320 329 0 329 1 0 1 1 0 8 1 pfrule 1360 13562 0 13562 213 205 8 201 0 8 8 art_heap8 4096 3 0 1 3 1 2 3 0 8 0 art_heap4 256 3347 0 3123 53 32 21 33 0 8 1 art_table 32 3350 0 3124 5 1 4 5 0 8 0 art_node 16 814 0 771 1 0 1 1 0 8 0 sysvmsgpl 40 47 0 8 1 0 1 1 0 8 0 semapl 112 1911 0 1901 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 17917 0 16434 93 0 93 93 0 8 0 ffsino 240 17917 0 16434 88 0 88 88 0 8 0 nchpl 144 34442 0 32824 62 0 62 62 0 8 0 rtmask 32 52 0 52 3 2 1 1 0 8 1 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 134449 0 134449 7 6 1 2 0 8 1 vcpupl 1984 187 0 0 24 0 24 24 0 8 0 vmpool 528 268 0 81 14 1 13 13 0 8 0 pfiaddrpl 120 170 0 170 4 3 1 1 0 8 1 scsiplug 72 5 0 5 3 3 0 1 0 8 0 scxspl 216 107616 0 107616 30 29 1 8 0 8 1 plimitpl 152 1772 0 1758 1 0 1 1 0 8 0 sigapl 424 13094 0 13048 10 4 6 8 0 8 0 futexpl 64 125681 0 125678 3 2 1 1 0 8 0 knotepl 120 115221 0 115141 9 5 4 5 0 8 0 kqueuepl 184 2521 0 2513 35 34 1 4 0 8 0 pipepl 304 2489 0 2461 56 53 3 8 0 8 0 fdescpl 432 13024 0 12999 4 0 4 4 0 8 0 filepl 120 94981 0 94742 123 109 14 17 0 8 4 lockfpl 104 3233 0 3231 8 7 1 2 0 8 0 lockfspl 48 824 0 822 1 0 1 1 0 8 0 sessionpl 144 76 0 60 1 0 1 1 0 8 0 pgrppl 48 1182 0 1166 1 0 1 1 0 8 0 ucredpl 96 10337 0 10321 1 0 1 1 0 8 0 zombiepl 144 13048 0 13046 1 0 1 1 0 8 0 processpl 1000 13094 0 13046 10 3 7 9 0 8 0 procpl 672 32160 0 32098 12 5 7 8 0 8 0 sosppl 168 80 0 80 14 14 0 1 0 8 0 sockpl 448 22876 0 22847 418 406 12 30 0 8 8 mcl64k 65536 653 0 653 31 30 1 1 0 8 1 mcl16k 16384 201 0 201 37 36 1 1 0 8 1 mcl12k 12288 453 0 453 30 29 1 1 0 8 1 mcl9k 9216 178 0 178 35 35 0 1 0 8 0 mcl8k 8192 1357 0 1357 24 23 1 1 0 8 1 mcl4k 4096 1261 0 1261 16 15 1 1 0 8 1 mcl2k2 2112 107 0 107 36 35 1 1 0 8 1 mcl2k 2048 105246 0 105188 50 38 12 17 0 8 2 mtagpl 96 2523 0 2061 33 16 17 17 0 8 1 mbufpl 256 256798 0 256124 161 105 56 62 0 8 0 bufpl 288 25935 0 19526 459 0 459 459 0 8 0 anonpl 24 3693839 0 3676890 405 267 138 192 0 188 8 amapchunkpl 152 602273 0 601553 1081 896 185 662 0 158 152 amappl16 200 40666 0 39936 231 191 40 61 0 8 0 amappl15 192 2113 0 2108 1 0 1 1 0 8 0 amappl14 184 273 0 267 1 0 1 1 0 8 0 amappl13 176 1432 0 1431 1 0 1 1 0 8 0 amappl12 168 1677 0 1673 2 1 1 1 0 8 0 amappl11 160 1768 0 1753 1 0 1 1 0 8 0 amappl10 152 1816 0 1809 1 0 1 1 0 8 0 amappl9 144 3341 0 3336 1 0 1 1 0 8 0 amappl8 136 2907 0 2807 6 2 4 4 0 8 0 amappl7 128 1540 0 1528 1 0 1 1 0 8 0 amappl6 120 3223 0 3196 2 1 1 2 0 8 0 amappl5 112 11455 0 11441 1 0 1 1 0 8 0 amappl4 104 5142 0 5106 2 0 2 2 0 8 0 amappl3 96 3708 0 3695 1 0 1 1 0 8 0 amappl2 88 3777 0 3727 3 1 2 3 0 8 0 amappl1 80 228873 0 228347 20 7 13 18 0 8 0 amappl 88 154693 0 154386 8 0 8 8 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 13292 0 13080 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 13292 0 13080 2 0 2 2 0 8 0 vmmpekpl 168 85148 0 85067 4 0 4 4 0 8 0 vmmpepl 168 1191547 0 1188749 373 223 150 160 0 357 13 vmsppl 272 13291 0 13080 17 2 15 15 0 8 0 rwobjpl 24 284125 0 276306 52 3 49 50 0 8 0 pdppl 4096 26590 0 26347 933 682 251 251 0 8 8 pvpl 32 6124205 0 6103221 598 373 225 322 0 265 18 pmappl 216 13291 0 13080 13 1 12 12 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2790 0 1755 31 0 31 31 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sblock(fffffd805ff06aa0,fffffd805ff06bb8,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd805ff06aa0,fffffd805ff06bb8,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd805ff06aa0,0,ffff800021657660,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:527 fifo_write(ffff8000216575b0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:288 VOP_WRITE(fffffd806cd135d8,ffff800021657660,3,fffffd807f7d8780) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002160e2b0,fffffd806cd135d8,fffffd807f7d8780,ffff800021657720,ffff800021657700) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff80002160e2b0,1,1,ffff8000006c3c10,2dcd) at ktrgenio+0x26b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff80002160e2b0,1,1,ffff8000006c3c10,2dcd) at ktrgenio+0x26b sys/kern/kern_ktrace.c:265 dofilewritev(ffff80002160e2b0,1,ffff8000216578a8,0,ffff8000216579a0) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_write(ffff80002160e2b0,ffff800021657940,ffff8000216579a0) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff800021657a10) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x223c1d060, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace sblock(fffffd805ff06aa0,fffffd805ff06bb8,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd805ff06aa0,fffffd805ff06bb8,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd805ff06aa0,0,ffff800021657660,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:527 fifo_write(ffff8000216575b0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:288 VOP_WRITE(fffffd806cd135d8,ffff800021657660,3,fffffd807f7d8780) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002160e2b0,fffffd806cd135d8,fffffd807f7d8780,ffff800021657720,ffff800021657700) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff80002160e2b0,1,1,ffff8000006c3c10,2dcd) at ktrgenio+0x26b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff80002160e2b0,1,1,ffff8000006c3c10,2dcd) at ktrgenio+0x26b sys/kern/kern_ktrace.c:265 dofilewritev(ffff80002160e2b0,1,ffff8000216578a8,0,ffff8000216579a0) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_write(ffff80002160e2b0,ffff800021657940,ffff8000216579a0) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff800021657a10) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x223c1d060, count: -10