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(fffffd806e574a90,fffffd806e574ba8,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd806e574a90,fffffd806e574ba8,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd806e574a90,0,ffff8000215eb450,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff8000215eb3a0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80799b6478,ffff8000215eb450,3,fffffd807f7d7a20) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff9508,fffffd80799b6478,fffffd807f7d7a20,ffff8000215eb510,ffff8000215eb4f0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrstruct(ffff8000ffff9508,ffffffff826155c5,ffff8000215eb650,20) at ktrstruct+0x16f ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrstruct(ffff8000ffff9508,ffffffff826155c5,ffff8000215eb650,20) at ktrstruct+0x16f sys/kern/kern_ktrace.c:315 ppollregister_evts(ffff8000ffff9508,ffff8000215eb650,1,ffff8000215eb978,3) at ppollregister_evts+0xb8 sys/kern/sys_generic.c:1125 ppollregister(ffff8000ffff9508,ffff8000215eb960,4,ffff8000215eb9cc,ffff8000215eb9c8) at ppollregister+0x2ef sys/kern/sys_generic.c:1231 doppoll(ffff8000ffff9508,2553684bc00,4,0,ffff8000215eba54,ffff8000215ebb30) at doppoll+0x189 sys/kern/sys_generic.c:1037 sys_ppoll(ffff8000ffff9508,ffff8000215ebad0,ffff8000215ebb30) at sys_ppoll+0x133 sys/kern/sys_generic.c:993 syscall(ffff8000215ebba0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe15d0, count: -12 ddb> show registers rdi 0 rsi 0 rbp 0xffff8000215eb260 rbx 0xfffffd806e574ba8 rdx 0 rcx 0xffff8000ffff950c rax 0x581c75a0ab364fa9 r8 0 r9 0 r10 0xca42a7a73cb0141e r11 0xe069ff515b3492e6 r12 0xfffffd806e574a01 r13 0x1 r14 0xfffffd806e574bf8 r15 0xfffffd806e574a90 rip 0xffffffff81af36aa sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000215eb200 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb> show proc PROC (sshd) pid=16211 stat=onproc flags process=12 proc=9 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021610d30,0xffff8000ffff8d38 process=0xffff8000216127e8 user=0xffff8000215e6000, vmspace=0xfffffd807f016770 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 17477 85386 20391 0 2 0 syz-executor.5 17477 215740 20391 0 2 0x4000000 syz-executor.5 38122 180686 9300 0 2 0x83 syz-executor.1 94554 142119 9300 0 2 0x83 syz-executor.2 69499 87587 0 0 3 0x14280 nfsidl nfsio 15415 435160 0 0 3 0x14280 nfsidl nfsio 95896 13620 0 0 3 0x14280 nfsidl nfsio 83589 460469 0 0 3 0x14280 nfsidl nfsio 39557 97419 0 0 3 0x14280 nfsidl nfsio 97009 219836 0 0 3 0x14280 nfsidl nfsio 63289 105006 0 0 3 0x14280 nfsidl nfsio 43798 429977 0 0 3 0x14280 nfsidl nfsio 10469 14806 0 0 3 0x14280 nfsidl nfsio 29427 108301 0 0 3 0x14280 nfsidl nfsio 95066 85007 0 0 3 0x14280 nfsidl nfsio 15475 262306 0 0 3 0x14280 nfsidl nfsio 82834 25944 0 0 3 0x14280 nfsidl nfsio 46906 320373 0 0 3 0x14280 nfsidl nfsio 49267 214117 0 0 3 0x14280 nfsidl nfsio 60115 223160 0 0 3 0x14280 nfsidl nfsio 68810 437541 0 0 3 0x14280 nfsidl nfsio 53084 440724 0 0 3 0x14280 nfsidl nfsio 55235 458605 0 0 3 0x14280 nfsidl nfsio 46005 247640 0 0 3 0x14280 nfsidl nfsio 91554 195533 1 0 3 0x100083 ttyin getty 4118 79611 0 0 3 0x14200 bored sosplice 71750 138565 9300 0 2 0x83 syz-executor.7 62207 349177 9300 0 2 0x83 syz-executor.6 20391 438150 9300 0 2 0x83 syz-executor.5 56366 338308 9300 0 2 0x83 syz-executor.3 44733 255602 9300 0 2 0x83 syz-executor.4 22598 21912 9300 0 2 0x83 syz-executor.0 9300 488913 22602 0 2 0x83 syz-fuzzer 9300 450645 22602 0 2 0x4000083 syz-fuzzer 9300 353671 22602 0 3 0x4000082 thrsleep syz-fuzzer 9300 1061 22602 0 3 0x4000082 thrsleep syz-fuzzer 9300 181450 22602 0 3 0x4000082 thrsleep syz-fuzzer 9300 192373 22602 0 3 0x4000082 thrsleep syz-fuzzer 9300 103015 22602 0 3 0x4000082 thrsleep syz-fuzzer 9300 6031 22602 0 3 0x4000082 thrsleep syz-fuzzer 9300 299141 22602 0 3 0x4000082 thrsleep syz-fuzzer 22602 475223 14240 0 3 0x10008a sigsusp ksh *14240 16211 87761 0 7 0x1b sshd 87761 269428 1 0 3 0x88 kqread sshd 39109 340605 72048 73 3 0x1100090 kqread syslogd 72048 253763 1 0 3 0x100082 netio syslogd 66602 235909 1 0 3 0x100080 kqread resolvd 80187 427012 91618 77 3 0x100092 kqread dhcpleased 28730 356548 91618 77 3 0x100092 kqread dhcpleased 91618 398231 1 0 3 0x80 kqread dhcpleased 83669 511604 0 0 3 0x14200 bored smr 17385 30294 0 0 2 0x14200 zerothread 65611 4526 0 0 3 0x14200 aiodoned aiodoned 84456 154280 0 0 3 0x14200 syncer update 69135 93837 0 0 3 0x14200 cleaner cleaner 45157 346653 0 0 3 0x14200 reaper reaper 78734 56905 0 0 3 0x14200 pgdaemon pagedaemon 4870 3746 0 0 3 0x14200 bored viomb 14491 73395 0 0 3 0x40014200 acpi0 acpi0 37270 251858 0 0 3 0x14200 bored softnet 97312 486942 0 0 3 0x14200 bored softnet 51786 502662 0 0 3 0x14200 bored softnet 44200 499998 0 0 3 0x14200 bored softnet 77294 132964 0 0 3 0x14200 bored systqmp 60695 249704 0 0 3 0x14200 bored systq 37035 165225 0 0 3 0x40014200 bored softclock 34964 461092 0 0 3 0x40014200 idle0 1 125576 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 10165 6401K 7370K 78643K 14901 0 pcb 13 8K 8K 78643K 146 0 rtable 240 10K 10K 78643K 555 0 ifaddr 84 17K 18K 78643K 204 0 counters 27 17K 17K 78643K 43 0 ioctlops 0 0K 4K 78643K 278 0 iov 0 0K 12K 78643K 85 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1267 79K 80K 78643K 2387 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 14 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 72 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 11 37K 81K 78643K 3811 0 sigio 0 0K 0K 78643K 28 0 proc 58 59K 75K 78643K 585 0 subproc 104 6K 6K 78643K 130 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 196 0 in_multi 99 6K 7K 78643K 229 0 ether_multi 1 0K 0K 78643K 27 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 793 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 186 77K 82K 78643K 19545 0 UVM aobj 7 2K 2K 78643K 7 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 130 0 NDP 11 0K 2K 78643K 47 0 temp 124 4783K 5807K 78643K 16939 0 kqueue 12 18K 26K 78643K 282 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 120 122 0 119 1 0 1 1 0 8 0 rtentry 112 144 0 39 4 0 4 4 0 8 0 unpcb 136 606 0 593 1 0 1 1 0 8 0 syncache 296 33 0 33 6 6 0 1 0 8 0 tcpqe 32 6 0 6 1 1 0 1 0 8 0 tcpcb 736 556 0 549 10 8 2 4 0 8 1 arp 88 23 0 4 1 0 1 1 0 8 0 ipq 40 2 0 2 2 2 0 1 0 8 0 ipqe 40 5 0 5 2 2 0 1 0 8 0 inpcb 312 1244 0 1237 5 4 1 2 0 8 0 nd6 48 30 0 6 1 0 1 1 0 8 0 pkpcb 40 12 0 12 1 1 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 pfstscr 40 8 0 7 1 0 1 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 34 0 27 2 1 1 1 0 8 0 pftag 88 11 0 8 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 16 0 14 1 0 1 1 0 8 0 pfstate 336 8 0 7 1 0 1 1 0 8 0 pfrule 1360 66 0 53 5 3 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 620 0 163 32 3 29 30 0 8 0 art_table 32 621 0 163 4 0 4 4 0 8 0 art_node 16 143 0 50 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 70 0 60 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 6033 0 4594 91 0 91 91 0 8 0 ffsino 240 6033 0 4594 86 0 86 86 0 8 0 nchpl 144 10424 0 8780 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 26507 0 26502 2 1 1 2 0 8 0 pfiaddrpl 120 20 0 8 2 1 1 1 0 8 0 kstatmem 264 54 0 32 2 0 2 2 0 8 0 scsiplug 72 4 0 4 1 1 0 1 0 8 0 scxspl 216 31096 0 31096 10 9 1 8 0 8 1 plimitpl 152 148 0 134 1 0 1 1 0 8 0 sigapl 424 4113 0 4051 8 0 8 8 0 8 0 futexpl 64 17921 0 17921 1 0 1 1 0 8 1 knotepl 120 35864 0 35783 8 5 3 7 0 8 0 kqueuepl 184 388 0 380 1 0 1 1 0 8 0 pipepl 304 205 0 177 3 0 3 3 0 8 0 fdescpl 432 4076 0 4054 4 0 4 4 0 8 0 filepl 120 10427 0 10190 8 0 8 8 0 8 0 lockfpl 104 405 0 403 1 0 1 1 0 8 0 lockfspl 48 161 0 159 1 0 1 1 0 8 0 sessionpl 144 26 0 10 1 0 1 1 0 8 0 pgrppl 48 26 0 10 1 0 1 1 0 8 0 ucredpl 96 1278 0 1268 1 0 1 1 0 8 0 zombiepl 144 4054 0 4051 1 0 1 1 0 8 0 processpl 1000 4113 0 4051 11 2 9 9 0 8 0 procpl 672 8096 0 8025 11 3 8 8 0 8 1 sosppl 168 38 0 38 5 4 1 1 0 8 1 sockpl 448 1984 0 1961 6 2 4 4 0 8 1 pool(sockpl): free list modified: page 0xfffffd806e574000; item ordinal 1; addr 0xfffffd806e574a90 (p 0xfffffd806f1a8000); offset 0x10=0xdead9eef mcl64k 65536 31 0 31 4 4 0 1 0 8 0 mcl16k 16384 11 0 11 1 1 0 1 0 8 0 mcl12k 12288 4 0 4 1 1 0 1 0 8 0 mcl9k 9216 4 0 4 1 1 0 1 0 8 0 mcl8k 8192 25 0 25 6 5 1 1 0 8 1 mcl4k 4096 65 0 65 4 3 1 1 0 8 1 mcl2k2 2112 11 0 11 2 2 0 1 0 8 0 mcl2k 2048 36598 0 36557 14 6 8 9 0 8 2 mtagpl 96 452 0 50 11 1 10 10 0 8 0 mbufpl 256 99540 0 98913 48 3 45 45 0 8 2 bufpl 288 8478 0 2077 458 0 458 458 0 8 0 anonpl 24 669656 0 660758 95 21 74 83 0 188 12 amapchunkpl 152 55640 0 55238 27 6 21 23 0 158 1 amappl16 200 9356 0 9078 34 17 17 27 0 8 0 amappl15 192 824 0 823 1 0 1 1 0 8 0 amappl14 184 8 0 2 1 0 1 1 0 8 0 amappl13 176 550 0 548 1 0 1 1 0 8 0 amappl12 168 174 0 173 2 1 1 1 0 8 0 amappl11 160 959 0 942 1 0 1 1 0 8 0 amappl10 152 20 0 16 1 0 1 1 0 8 0 amappl9 144 952 0 948 1 0 1 1 0 8 0 amappl8 136 1490 0 1438 2 0 2 2 0 8 0 amappl7 128 1014 0 1003 1 0 1 1 0 8 0 amappl6 120 665 0 650 2 1 1 2 0 8 0 amappl5 112 3286 0 3275 1 0 1 1 0 8 0 amappl4 104 2048 0 2016 2 0 2 2 0 8 0 amappl3 96 10398 0 10367 2 0 2 2 0 8 0 amappl2 88 4982 0 4926 3 1 2 3 0 8 0 amappl1 80 92048 0 91524 21 6 15 19 0 8 1 amappl 88 18998 0 18891 4 0 4 4 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 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 4076 0 4054 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4076 0 4054 1 0 1 1 0 8 0 vmmpekpl 168 23247 0 23194 3 0 3 3 0 8 0 vmmpepl 168 377332 0 375580 125 20 105 114 0 357 11 vmsppl 272 4075 0 4054 4 2 2 3 0 8 0 rwobjpl 24 89974 0 82907 44 0 44 44 0 8 0 pdppl 4096 8158 0 8108 148 84 64 72 0 8 14 pvpl 32 1498776 0 1486066 253 113 140 241 0 265 20 pmappl 216 4075 0 4054 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 932 0 131 23 0 23 23 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sblock(fffffd806e574a90,fffffd806e574ba8,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd806e574a90,fffffd806e574ba8,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd806e574a90,0,ffff8000215eb450,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff8000215eb3a0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80799b6478,ffff8000215eb450,3,fffffd807f7d7a20) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff9508,fffffd80799b6478,fffffd807f7d7a20,ffff8000215eb510,ffff8000215eb4f0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrstruct(ffff8000ffff9508,ffffffff826155c5,ffff8000215eb650,20) at ktrstruct+0x16f ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrstruct(ffff8000ffff9508,ffffffff826155c5,ffff8000215eb650,20) at ktrstruct+0x16f sys/kern/kern_ktrace.c:315 ppollregister_evts(ffff8000ffff9508,ffff8000215eb650,1,ffff8000215eb978,3) at ppollregister_evts+0xb8 sys/kern/sys_generic.c:1125 ppollregister(ffff8000ffff9508,ffff8000215eb960,4,ffff8000215eb9cc,ffff8000215eb9c8) at ppollregister+0x2ef sys/kern/sys_generic.c:1231 doppoll(ffff8000ffff9508,2553684bc00,4,0,ffff8000215eba54,ffff8000215ebb30) at doppoll+0x189 sys/kern/sys_generic.c:1037 sys_ppoll(ffff8000ffff9508,ffff8000215ebad0,ffff8000215ebb30) at sys_ppoll+0x133 sys/kern/sys_generic.c:993 syscall(ffff8000215ebba0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe15d0, count: -12 ddb> machine ddbcpu 1 No such command ddb> trace sblock(fffffd806e574a90,fffffd806e574ba8,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd806e574a90,fffffd806e574ba8,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd806e574a90,0,ffff8000215eb450,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff8000215eb3a0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80799b6478,ffff8000215eb450,3,fffffd807f7d7a20) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff9508,fffffd80799b6478,fffffd807f7d7a20,ffff8000215eb510,ffff8000215eb4f0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrstruct(ffff8000ffff9508,ffffffff826155c5,ffff8000215eb650,20) at ktrstruct+0x16f ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrstruct(ffff8000ffff9508,ffffffff826155c5,ffff8000215eb650,20) at ktrstruct+0x16f sys/kern/kern_ktrace.c:315 ppollregister_evts(ffff8000ffff9508,ffff8000215eb650,1,ffff8000215eb978,3) at ppollregister_evts+0xb8 sys/kern/sys_generic.c:1125 ppollregister(ffff8000ffff9508,ffff8000215eb960,4,ffff8000215eb9cc,ffff8000215eb9c8) at ppollregister+0x2ef sys/kern/sys_generic.c:1231 doppoll(ffff8000ffff9508,2553684bc00,4,0,ffff8000215eba54,ffff8000215ebb30) at doppoll+0x189 sys/kern/sys_generic.c:1037 sys_ppoll(ffff8000ffff9508,ffff8000215ebad0,ffff8000215ebb30) at sys_ppoll+0x133 sys/kern/sys_generic.c:993 syscall(ffff8000215ebba0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe15d0, count: -12