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(fffffd806e57be10,fffffd806e57bf28,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd806e57be10,fffffd806e57bf28,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd806e57be10,0,ffff80002e87b6e0,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff80002e87b630) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd806a4920b0,ffff80002e87b6e0,3,fffffd807f7d7540) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000242ac008,fffffd806a4920b0,fffffd807f7d7540,ffff80002e87b7a0,ffff80002e87b780) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrstruct(ffff8000242ac008,ffffffff825f51e5,ffff800000bbe000,dd0) at ktrstruct+0x16f ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrstruct(ffff8000242ac008,ffffffff825f51e5,ffff800000bbe000,dd0) at ktrstruct+0x16f sys/kern/kern_ktrace.c:315 iovec_copyin(20000000,ffff80002e87b998,ffff80002e87b8e0,dd,ffff80002e87b990) at iovec_copyin+0x16c sys/kern/sys_generic.c:121 sys_writev(ffff8000242ac008,ffff80002e87ba08,ffff80002e87ba60) at sys_writev+0x5a sys/kern/sys_generic.c:320 syscall(ffff80002e87bad0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd38d31547f0, count: -10 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002e87b4f0 rbx 0xfffffd806e57bf28 rdx 0 rcx 0xffff8000242ac00c rax 0xf02863b162291129 r8 0 r9 0 r10 0x972e01de18570df9 r11 0xafa04e452e94474b r12 0xfffffd806e57be01 r13 0x1 r14 0xfffffd806e57bf78 r15 0xfffffd806e57be10 rip 0xffffffff816232fa sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002e87b490 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb> show proc PROC (syz-executor.1) pid=43091 stat=onproc flags process=0 proc=4000001 pri=24, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000242ac548,0xffff8000242c4558 process=0xffff80002161c7f0 user=0xffff80002e876000, vmspace=0xfffffd8067d92bb0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 35332 111822 75218 0 2 0 syz-executor.0 35332 206899 75218 0 3 0x4000080 fsleep syz-executor.0 89156 337592 18456 0 2 0 syz-executor.3 89156 478783 18456 0 3 0x4000080 fsleep syz-executor.3 89156 522829 18456 0 3 0x4000080 fsleep syz-executor.3 89156 435269 18456 0 3 0x4000080 fsleep syz-executor.3 92176 258203 58831 0 2 0x81 syz-executor.1 *92176 43091 58831 0 7 0x4000001 syz-executor.1 89910 515969 90565 0 2 0 syz-executor.7 89910 29453 90565 0 3 0x4000080 kqread syz-executor.7 49552 333432 26464 0 2 0 syz-executor.4 49552 119596 26464 0 3 0x4000080 fsleep syz-executor.4 18456 254913 14507 0 2 0x83 syz-executor.3 26464 440299 14507 0 2 0x83 syz-executor.4 66495 272506 14507 0 2 0x83 syz-executor.2 90565 444688 14507 0 2 0x83 syz-executor.7 58831 357060 14507 0 2 0x83 syz-executor.1 25271 317601 14507 0 2 0x83 syz-executor.5 75218 309045 14507 0 2 0x83 syz-executor.0 41673 252715 14507 0 2 0x83 syz-executor.6 79578 205548 0 0 3 0x14280 nfsidl nfsio 64598 115806 0 0 3 0x14280 nfsidl nfsio 92920 426219 0 0 3 0x14280 nfsidl nfsio 83564 335278 0 0 3 0x14280 nfsidl nfsio 78440 371851 0 0 3 0x14280 nfsidl nfsio 30251 114264 0 0 3 0x14280 nfsidl nfsio 32529 173927 0 0 3 0x14280 nfsidl nfsio 41600 44453 0 0 3 0x14280 nfsidl nfsio 90028 131971 0 0 3 0x14280 nfsidl nfsio 80445 35463 0 0 3 0x14280 nfsidl nfsio 60718 460605 0 0 3 0x14280 nfsidl nfsio 58891 162659 0 0 3 0x14280 nfsidl nfsio 64412 362580 0 0 3 0x14280 nfsidl nfsio 85686 63582 0 0 3 0x14280 nfsidl nfsio 44689 493874 0 0 3 0x14280 nfsidl nfsio 47209 66040 0 0 3 0x14280 nfsidl nfsio 81610 396095 0 0 3 0x14280 nfsidl nfsio 13441 175979 0 0 3 0x14280 nfsidl nfsio 49689 327538 0 0 3 0x14280 nfsidl nfsio 24358 505074 0 0 3 0x14280 nfsidl nfsio 20478 389722 0 0 3 0x14200 acct acct 7729 80958 0 0 3 0x14200 bored sosplice 14507 110567 94921 0 3 0x82 thrsleep syz-fuzzer 14507 299117 94921 0 2 0x4000083 syz-fuzzer 14507 257981 94921 0 3 0x4000082 thrsleep syz-fuzzer 14507 249528 94921 0 2 0x4000083 syz-fuzzer 14507 256733 94921 0 3 0x4000082 thrsleep syz-fuzzer 14507 305029 94921 0 3 0x4000082 thrsleep syz-fuzzer 14507 54352 94921 0 3 0x4000082 thrsleep syz-fuzzer 14507 337101 94921 0 3 0x4000082 thrsleep syz-fuzzer 94921 46760 73123 0 3 0x10008a sigsusp ksh 73123 464516 27012 0 3 0x9a kqread sshd 33607 276253 1 0 3 0x100083 ttyin getty 27012 508157 1 0 3 0x88 kqread sshd 67440 346147 83713 73 3 0x1100090 kqread syslogd 83713 46040 1 0 3 0x100082 netio syslogd 62330 111394 1 0 3 0x100080 kqread resolvd 5990 88673 57009 77 3 0x100092 kqread dhcpleased 26014 301535 57009 77 3 0x100092 kqread dhcpleased 57009 347548 1 0 3 0x80 kqread dhcpleased 137 348458 0 0 3 0x14200 bored smr 85861 5456 0 0 2 0x14200 zerothread 24666 381543 0 0 3 0x14200 aiodoned aiodoned 70 325512 0 0 3 0x14200 syncer update 24041 416351 0 0 3 0x14200 cleaner cleaner 282 356677 0 0 3 0x14200 reaper reaper 25345 92276 0 0 3 0x14200 pgdaemon pagedaemon 15717 213017 0 0 3 0x14200 bored viomb 5878 269308 0 0 3 0x40014200 acpi0 acpi0 11767 306704 0 0 3 0x14200 bored softnet 28632 381974 0 0 3 0x14200 bored systqmp 94615 262984 0 0 3 0x14200 bored systq 83940 224575 0 0 3 0x40014200 bored softclock 84332 327671 0 0 3 0x40014200 idle0 1 76648 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 10171 6428K 14615K 78643K 16474 0 pcb 13 14K 16K 78643K 516 0 rtable 194 9K 11K 78643K 1221 0 ifaddr 83 17K 20K 78643K 332 0 sysctl 2 0K 0K 78643K 2 0 counters 26 17K 17K 78643K 56 0 ioctlops 0 0K 4K 78643K 886 0 iov 1 4K 28K 78643K 565 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1348 84K 84K 78643K 3020 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 29 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 1344 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 85K 78643K 3576 0 sigio 0 0K 0K 78643K 41 0 proc 64 59K 108K 78643K 983 0 subproc 104 6K 6K 78643K 299 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 184 0 in_multi 80 5K 7K 78643K 366 0 ether_multi 1 0K 0K 78643K 22 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 2K 78643K 1615 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 277 329K 703K 78643K 20602 0 UVM aobj 72 7K 7K 78643K 84 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 171 0 NDP 12 0K 1K 78643K 92 0 temp 187 4836K 5003K 78643K 119983 0 kqueue 13 20K 24K 78643K 246 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 120 210 0 207 3 2 1 3 0 8 0 rtentry 112 323 0 245 4 1 3 4 0 8 0 unpcb 136 3644 0 3629 27 26 1 9 0 8 0 syncache 296 16 0 16 5 4 1 1 0 8 1 tcpqe 32 49 0 49 1 1 0 1 0 8 0 tcpcb 736 968 0 961 30 22 8 8 0 8 6 arp 88 54 0 40 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 4 0 3 1 0 1 1 0 8 0 inpcb 312 2820 0 2812 44 35 9 11 0 8 8 ip6q 72 36 0 36 2 2 0 1 0 8 0 ip6af 40 73 0 73 2 2 0 1 0 8 0 nd6 48 73 0 57 1 0 1 1 0 8 0 pkpcb 40 19 0 19 4 3 1 1 0 8 1 kcovpl 48 23 0 15 1 0 1 1 0 8 0 pfstscr 40 3 0 2 1 0 1 1 0 8 0 pfosfp 40 3 0 2 1 0 1 1 0 8 0 pfosfpen 112 3 0 2 1 0 1 1 0 8 0 pfrktable 1344 91 0 86 2 1 1 1 0 8 0 pftag 88 7 0 6 2 1 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 6 0 4 1 0 1 1 0 8 0 pfstate 320 3 0 2 1 0 1 1 0 8 0 pfrule 1360 69 0 45 4 1 3 3 0 8 0 art_heap8 4096 3 0 2 3 2 1 3 0 8 0 art_heap4 256 1369 0 1025 39 15 24 29 0 8 0 art_table 32 1372 0 1027 4 0 4 4 0 8 0 art_node 16 322 0 254 1 0 1 1 0 8 0 sysvmsgpl 40 79 0 74 1 0 1 1 0 8 0 semapl 112 1339 0 1329 1 0 1 1 0 8 0 shmpl 112 81 0 12 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 6233 0 4620 101 0 101 101 0 8 0 ffsino 240 6233 0 4620 95 0 95 95 0 8 0 nchpl 144 11991 0 10351 63 1 62 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 41286 0 41286 2 1 1 2 0 8 1 vcpupl 1984 31 0 0 4 0 4 4 0 8 0 vmpool 528 31 0 0 3 0 3 3 0 8 0 pfiaddrpl 120 31 0 28 4 3 1 1 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 33819 0 33819 20 18 2 8 0 8 2 plimitpl 152 344 0 330 1 0 1 1 0 8 0 sigapl 424 3847 0 3785 9 1 8 8 0 8 0 futexpl 64 39968 0 39963 1 0 1 1 0 8 0 knotepl 120 46658 0 46577 20 14 6 14 0 8 0 kqueuepl 184 636 0 627 9 8 1 4 0 8 0 pipepl 304 533 0 505 10 7 3 8 0 8 0 fdescpl 432 3812 0 3786 4 0 4 4 0 8 0 filepl 120 26170 0 25928 37 26 11 15 0 8 3 lockfpl 104 2631 0 2629 3 2 1 2 0 8 0 lockfspl 48 533 0 531 1 0 1 1 0 8 0 sessionpl 144 37 0 21 1 0 1 1 0 8 0 pgrppl 48 43 0 27 1 0 1 1 0 8 0 ucredpl 96 2753 0 2742 1 0 1 1 0 8 0 zombiepl 144 3786 0 3785 1 0 1 1 0 8 0 processpl 1000 3847 0 3785 10 1 9 9 0 8 0 procpl 672 8983 0 8907 13 5 8 9 0 8 1 sosppl 168 44 0 44 6 5 1 1 0 8 1 sockpl 448 6700 0 6674 131 117 14 30 0 8 10 mcl64k 65536 91 0 91 4 4 0 1 0 8 0 mcl16k 16384 32 0 32 6 6 0 1 0 8 0 mcl12k 12288 79 0 79 5 5 0 1 0 8 0 mcl9k 9216 29 0 29 7 7 0 1 0 8 0 mcl8k 8192 163 0 163 6 5 1 1 0 8 1 mcl4k 4096 331 0 331 2 1 1 1 0 8 1 mcl2k2 2112 25 0 25 7 6 1 1 0 8 1 mcl2k 2048 81586 0 81531 15 7 8 12 0 8 0 mtagpl 96 709 0 668 11 8 3 8 0 8 0 mbufpl 256 160713 0 160461 58 34 24 37 0 8 0 bufpl 288 11921 0 5514 458 0 458 458 0 8 0 anonpl 24 695671 0 679794 153 21 132 138 0 188 17 amapchunkpl 152 83505 0 82920 345 269 76 340 0 158 50 amappl16 200 10247 0 9586 67 26 41 48 0 8 5 amappl15 192 772 0 771 1 0 1 1 0 8 0 amappl14 184 561 0 559 1 0 1 1 0 8 0 amappl13 176 693 0 690 1 0 1 1 0 8 0 amappl12 168 479 0 477 1 0 1 1 0 8 0 amappl11 160 259 0 241 1 0 1 1 0 8 0 amappl10 152 269 0 266 1 0 1 1 0 8 0 amappl9 144 891 0 885 1 0 1 1 0 8 0 amappl8 136 1346 0 1277 3 0 3 3 0 8 0 amappl7 128 709 0 696 1 0 1 1 0 8 0 amappl6 120 691 0 673 2 1 1 2 0 8 0 amappl5 112 3102 0 3088 1 0 1 1 0 8 0 amappl4 104 1689 0 1656 2 0 2 2 0 8 0 amappl3 96 10609 0 10563 2 0 2 2 0 8 0 amappl2 88 4786 0 4719 3 1 2 3 0 8 0 amappl1 80 89919 0 89306 24 10 14 19 0 8 0 amappl 88 19868 0 19706 5 0 5 5 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 83 0 12 2 0 2 2 0 8 0 uaddrrnd 24 3843 0 3786 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3843 0 3786 1 0 1 1 0 8 0 vmmpekpl 168 30422 0 30369 3 0 3 3 0 8 0 vmmpepl 168 373218 0 370643 185 40 145 146 0 357 17 vmsppl 272 3842 0 3786 7 2 5 5 0 8 0 rwobjpl 24 94061 0 86425 48 0 48 48 0 8 0 pdppl 4096 7692 0 7603 256 161 95 105 0 8 6 pvpl 32 1445173 0 1425011 311 92 219 244 0 265 37 pmappl 216 3842 0 3786 4 0 4 4 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1267 0 415 25 0 25 25 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sblock(fffffd806e57be10,fffffd806e57bf28,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd806e57be10,fffffd806e57bf28,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd806e57be10,0,ffff80002e87b6e0,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff80002e87b630) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd806a4920b0,ffff80002e87b6e0,3,fffffd807f7d7540) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000242ac008,fffffd806a4920b0,fffffd807f7d7540,ffff80002e87b7a0,ffff80002e87b780) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrstruct(ffff8000242ac008,ffffffff825f51e5,ffff800000bbe000,dd0) at ktrstruct+0x16f ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrstruct(ffff8000242ac008,ffffffff825f51e5,ffff800000bbe000,dd0) at ktrstruct+0x16f sys/kern/kern_ktrace.c:315 iovec_copyin(20000000,ffff80002e87b998,ffff80002e87b8e0,dd,ffff80002e87b990) at iovec_copyin+0x16c sys/kern/sys_generic.c:121 sys_writev(ffff8000242ac008,ffff80002e87ba08,ffff80002e87ba60) at sys_writev+0x5a sys/kern/sys_generic.c:320 syscall(ffff80002e87bad0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd38d31547f0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace sblock(fffffd806e57be10,fffffd806e57bf28,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd806e57be10,fffffd806e57bf28,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd806e57be10,0,ffff80002e87b6e0,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff80002e87b630) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd806a4920b0,ffff80002e87b6e0,3,fffffd807f7d7540) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000242ac008,fffffd806a4920b0,fffffd807f7d7540,ffff80002e87b7a0,ffff80002e87b780) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrstruct(ffff8000242ac008,ffffffff825f51e5,ffff800000bbe000,dd0) at ktrstruct+0x16f ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrstruct(ffff8000242ac008,ffffffff825f51e5,ffff800000bbe000,dd0) at ktrstruct+0x16f sys/kern/kern_ktrace.c:315 iovec_copyin(20000000,ffff80002e87b998,ffff80002e87b8e0,dd,ffff80002e87b990) at iovec_copyin+0x16c sys/kern/sys_generic.c:121 sys_writev(ffff8000242ac008,ffff80002e87ba08,ffff80002e87ba60) at sys_writev+0x5a sys/kern/sys_generic.c:320 syscall(ffff80002e87bad0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd38d31547f0, count: -10