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(fffffd8007062030,fffffd8007062148,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8007062030,fffffd8007062148,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd8007062030,0,ffff800021608c00,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff800021608b50) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd807e729350,ffff800021608c00,3,fffffd807f7d74e0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff97a8,fffffd807e729350,fffffd807f7d74e0,ffff800021608cc8,ffff800021608ca0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff8000ffff97a8,4,1,ffff800000cfb2e0,e7c) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff8000ffff97a8,4,1,ffff800000cfb2e0,e7c) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilewritev(ffff8000ffff97a8,4,ffff800021608e48,0,ffff800021608f40) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_write(ffff8000ffff97a8,ffff800021608ee0,ffff800021608f40) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff800021608fb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda100, count: -10 ddb> show registers rdi 0 rsi 0 rbp 0xffff800021608a10 rbx 0xfffffd8007062148 rdx 0 rcx 0xffff8000ffff97ac rax 0xaca6c423f3279aee r8 0 r9 0 r10 0x602e5e9369946a24 r11 0xdebdd4dcd9940865 r12 0xfffffd8007062001 r13 0x1 r14 0xfffffd8007062198 r15 0xfffffd8007062030 rip 0xffffffff82241b1a sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000216089b0 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb> show proc PROC (sshd) pid=145366 stat=onproc flags process=12 proc=1 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021610a90,0xffff8000ffff9278 process=0xffff8000ffff67e0 user=0xffff800021604000, vmspace=0xfffffd807f016110 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 42104 149149 3624 0 2 0 syz-executor.0 30620 25181 47455 0 2 0 syz-executor.4 30620 336688 47455 0 3 0x4000080 fsleep syz-executor.4 57580 11245 38922 0 2 0 syz-executor.3 57580 274152 38922 0 3 0x4000080 fsleep syz-executor.3 9993 322314 49678 0 2 0 syz-executor.2 9993 5235 49678 0 3 0x4000080 fsleep syz-executor.2 38922 464608 77650 0 3 0x82 nanoslp syz-executor.3 87473 79005 77650 0 2 0x83 syz-executor.7 47455 105756 77650 0 3 0x82 nanoslp syz-executor.4 71271 269500 77650 0 2 0x83 syz-executor.1 3624 459703 77650 0 3 0x82 nanoslp syz-executor.0 11359 319530 77650 0 2 0x83 syz-executor.6 40209 314558 0 0 3 0x14280 nfsidl nfsio 95875 154752 0 0 3 0x14280 nfsidl nfsio 59896 80348 0 0 3 0x14280 nfsidl nfsio 1947 323975 0 0 3 0x14280 nfsidl nfsio 29202 279979 0 0 3 0x14280 nfsidl nfsio 14360 310815 0 0 3 0x14280 nfsidl nfsio 83926 74347 0 0 3 0x14280 nfsidl nfsio 57466 304510 0 0 3 0x14280 nfsidl nfsio 58857 232930 0 0 3 0x14280 nfsidl nfsio 92508 25893 0 0 3 0x14280 nfsidl nfsio 29012 195728 0 0 3 0x14280 nfsidl nfsio 61299 464313 0 0 3 0x14280 nfsidl nfsio 86647 344115 0 0 3 0x14280 nfsidl nfsio 70707 385105 0 0 3 0x14280 nfsidl nfsio 26114 465044 77650 0 3 0x82 nanoslp syz-executor.5 61497 466242 1 0 3 0x100083 ttyin getty 34263 201418 0 0 3 0x14280 nfsidl nfsio 39134 251167 0 0 3 0x14280 nfsidl nfsio 46197 294728 0 0 3 0x14280 nfsidl nfsio 55334 286043 0 0 3 0x14280 nfsidl nfsio 27478 97321 0 0 3 0x14280 nfsidl nfsio 94192 519820 0 0 3 0x14280 nfsidl nfsio 49678 315802 77650 0 3 0x82 nanoslp syz-executor.2 7939 246871 0 0 3 0x14200 bored sosplice 77650 373638 96011 0 3 0x82 thrsleep syz-fuzzer 77650 388550 96011 0 3 0x4000082 thrsleep syz-fuzzer 77650 246048 96011 0 3 0x4000082 thrsleep syz-fuzzer 77650 103685 96011 0 3 0x4000082 thrsleep syz-fuzzer 77650 165166 96011 0 2 0x4000083 syz-fuzzer 77650 374022 96011 0 2 0x4000083 syz-fuzzer 77650 213541 96011 0 3 0x4000082 thrsleep syz-fuzzer 77650 442981 96011 0 3 0x4000082 kqread syz-fuzzer 77650 268690 96011 0 3 0x4000082 thrsleep syz-fuzzer 96011 227869 86499 0 3 0x10008a sigsusp ksh *86499 145366 36463 0 7 0x13 sshd 36463 124605 1 0 3 0x88 kqread sshd 3656 246068 67008 73 2 0x1100010 syslogd 67008 154939 1 0 3 0x100082 netio syslogd 14564 315536 1 0 3 0x100080 kqread resolvd 59959 152411 78097 77 3 0x100092 kqread dhcpleased 73184 54086 78097 77 3 0x100092 kqread dhcpleased 78097 384425 1 0 3 0x80 kqread dhcpleased 58039 3276 0 0 3 0x14200 bored smr 82268 137924 0 0 2 0x14200 zerothread 33927 31164 0 0 3 0x14200 aiodoned aiodoned 1265 464126 0 0 3 0x14200 syncer update 88707 404448 0 0 3 0x14200 cleaner cleaner 50418 427062 0 0 3 0x14200 reaper reaper 22365 116324 0 0 3 0x14200 pgdaemon pagedaemon 17348 267041 0 0 3 0x14200 bored viomb 21807 20855 0 0 3 0x40014200 acpi0 acpi0 53718 37279 0 0 3 0x14200 bored softnet 82532 412291 0 0 3 0x14200 bored softnet 50650 286607 0 0 3 0x14200 bored softnet 69324 180129 0 0 3 0x14200 bored softnet 70147 14204 0 0 3 0x14200 bored systqmp 60782 356039 0 0 3 0x14200 bored systq 90 443404 0 0 3 0x40014200 bored softclock 89606 281897 0 0 3 0x40014200 idle0 1 287896 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 6470K 10760K 78643K 33144 0 pcb 13 20K 25K 78643K 1059 0 rtable 176 14K 18K 78643K 4628 0 ifaddr 84 18K 22K 78643K 1508 0 sysctl 2 0K 0K 78643K 2 0 counters 26 17K 17K 78643K 114 0 ioctlops 0 0K 4K 78643K 2945 0 iov 0 0K 40K 78643K 733 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1456 91K 91K 78643K 8073 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 68 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 445 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 85K 78643K 8635 0 sigio 0 0K 0K 78643K 86 0 proc 64 59K 91K 78643K 2027 0 subproc 104 6K 7K 78643K 705 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 351 0 in_multi 68 4K 7K 78643K 753 0 ether_multi 1 0K 0K 78643K 22 0 mrt 1 0K 0K 78643K 31 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 193 864K 864K 78643K 193 0 exec 0 0K 2K 78643K 2988 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 316 465K 467K 78643K 46742 0 UVM aobj 131 8K 8K 78643K 136 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 321 0 NDP 12 0K 2K 78643K 215 0 temp 186 4826K 21144K 78643K 156067 0 kqueue 12 18K 26K 78643K 740 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 1013 0 1010 18 17 1 5 0 8 0 rtentry 112 743 0 669 6 2 4 4 0 8 0 unpcb 136 6853 0 6840 72 71 1 9 0 8 0 syncache 296 48 0 48 12 12 0 1 0 8 0 tcpqe 32 8 0 8 4 4 0 1 0 8 0 tcpcb 736 4999 0 4991 163 158 5 15 0 8 4 arp 88 132 0 115 1 0 1 1 0 8 0 ipq 40 15 0 15 4 4 0 1 0 8 0 ipqe 40 41 0 41 4 4 0 1 0 8 0 inpcb 312 11687 0 11675 152 148 4 15 0 8 2 nd6 48 173 0 158 1 0 1 1 0 8 0 pkpcb 40 53 0 53 4 4 0 1 0 8 0 kcovpl 48 54 0 46 1 0 1 1 0 8 0 ppxss 1152 27 0 27 7 7 0 1 0 8 0 pfstscr 40 272 0 271 1 0 1 1 0 8 0 pfosfp 40 170 0 166 1 0 1 1 0 8 0 pfosfpen 112 170 0 2 5 0 5 5 0 8 0 pfrktable 1344 1211 0 1210 3 2 1 1 0 8 0 pftag 88 19 0 11 2 1 1 1 0 8 0 pfstitem 24 270 0 268 1 0 1 1 0 8 0 pfstkey 112 544 0 542 1 0 1 1 0 8 0 pfstate 336 272 0 271 1 0 1 1 0 8 0 pfrule 1360 645 0 637 13 12 1 3 0 8 0 rttmr 64 10 0 10 3 3 0 1 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 3276 0 2951 51 28 23 29 0 8 0 art_table 32 3278 0 2952 5 1 4 4 0 8 0 art_node 16 742 0 678 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 1 1 0 1 1 0 8 0 semapl 112 443 0 433 1 0 1 1 0 8 0 shmpl 112 133 0 5 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 13163 0 11694 92 0 92 92 0 8 0 ffsino 240 13163 0 11694 87 0 87 87 0 8 0 nchpl 144 24099 0 22467 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 92443 0 92442 13 12 1 2 0 8 0 vcpupl 1984 25 0 0 4 0 4 4 0 8 0 vmpool 528 45 0 20 5 3 2 2 0 8 0 pfiaddrpl 120 436 0 436 4 4 0 1 0 8 0 kstatmem 264 200 0 176 2 0 2 2 0 8 0 scxspl 216 69264 0 69264 33 32 1 8 0 8 1 plimitpl 152 1127 0 1113 1 0 1 1 0 8 0 sigapl 424 8855 0 8792 8 0 8 8 0 8 0 futexpl 64 82276 0 82273 6 5 1 1 0 8 0 knotepl 120 102032 0 101951 83 76 7 14 0 8 4 kqueuepl 184 1553 0 1545 15 14 1 4 0 8 0 pipepl 304 2016 0 1988 46 43 3 8 0 8 0 fdescpl 432 8803 0 8778 4 0 4 4 0 8 0 filepl 120 67318 0 67081 123 113 10 18 0 8 2 lockfpl 104 1964 0 1962 6 5 1 2 0 8 0 lockfspl 48 623 0 621 1 0 1 1 0 8 0 sessionpl 144 71 0 55 1 0 1 1 0 8 0 pgrppl 48 148 0 132 1 0 1 1 0 8 0 ucredpl 96 11174 0 11164 1 0 1 1 0 8 0 zombiepl 144 8793 0 8792 1 0 1 1 0 8 0 processpl 1000 8855 0 8792 12 3 9 9 0 8 0 procpl 672 21228 0 21154 11 2 9 9 0 8 0 sosppl 168 90 0 90 10 10 0 1 0 8 0 sockpl 448 19615 0 19591 368 358 10 30 0 8 7 mcl64k 65536 296 0 296 28 27 1 1 0 8 1 mcl16k 16384 90 0 90 20 20 0 1 0 8 0 mcl12k 12288 185 0 185 23 22 1 1 0 8 1 mcl9k 9216 86 0 86 18 18 0 1 0 8 0 mcl8k 8192 490 0 490 19 19 0 1 0 8 0 mcl4k 4096 931 0 931 12 11 1 1 0 8 1 mcl2k2 2112 42 0 42 20 20 0 1 0 8 0 mcl2k 2048 85534 0 85487 23 16 7 9 0 8 0 mtagpl 96 1454 0 1100 20 10 10 11 0 8 0 mbufpl 256 195595 0 195011 95 54 41 44 0 8 0 bufpl 288 18476 0 12069 458 0 458 458 0 8 0 anonpl 24 1651850 0 1634878 262 130 132 138 0 188 17 amapchunkpl 152 136448 0 135834 86 57 29 40 0 158 0 amappl16 200 25497 0 24854 135 88 47 48 0 8 10 amappl15 192 2419 0 2417 1 0 1 1 0 8 0 amappl14 184 1870 0 1866 1 0 1 1 0 8 0 amappl13 176 1587 0 1582 1 0 1 1 0 8 0 amappl12 168 626 0 622 2 1 1 1 0 8 0 amappl11 160 547 0 531 1 0 1 1 0 8 0 amappl10 152 1215 0 1212 1 0 1 1 0 8 0 amappl9 144 1279 0 1274 1 0 1 1 0 8 0 amappl8 136 1948 0 1876 3 0 3 3 0 8 0 amappl7 128 882 0 869 1 0 1 1 0 8 0 amappl6 120 1265 0 1248 2 1 1 2 0 8 0 amappl5 112 7242 0 7229 1 0 1 1 0 8 0 amappl4 104 3451 0 3423 2 0 2 2 0 8 0 amappl3 96 25008 0 24967 2 0 2 2 0 8 0 amappl2 88 10750 0 10691 3 1 2 3 0 8 0 amappl1 80 205059 0 204490 26 11 15 19 0 8 0 amappl 88 45369 0 45201 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 72 135 0 5 3 0 3 3 0 8 0 uaddrrnd 24 8848 0 8798 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8848 0 8798 1 0 1 1 0 8 0 vmmpekpl 168 62422 0 62362 4 0 4 4 0 8 0 vmmpepl 168 860420 0 858002 275 141 134 139 0 357 6 vmsppl 272 8847 0 8798 6 2 4 4 0 8 0 rwobjpl 24 207230 0 199583 54 5 49 49 0 8 0 pdppl 4096 17702 0 17621 677 590 87 89 0 8 6 pvpl 32 3270671 0 3250112 463 253 210 239 0 265 28 pmappl 216 8847 0 8798 3 0 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2286 0 1458 25 0 25 25 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sblock(fffffd8007062030,fffffd8007062148,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8007062030,fffffd8007062148,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd8007062030,0,ffff800021608c00,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff800021608b50) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd807e729350,ffff800021608c00,3,fffffd807f7d74e0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff97a8,fffffd807e729350,fffffd807f7d74e0,ffff800021608cc8,ffff800021608ca0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff8000ffff97a8,4,1,ffff800000cfb2e0,e7c) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff8000ffff97a8,4,1,ffff800000cfb2e0,e7c) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilewritev(ffff8000ffff97a8,4,ffff800021608e48,0,ffff800021608f40) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_write(ffff8000ffff97a8,ffff800021608ee0,ffff800021608f40) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff800021608fb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda100, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace sblock(fffffd8007062030,fffffd8007062148,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8007062030,fffffd8007062148,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd8007062030,0,ffff800021608c00,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff800021608b50) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd807e729350,ffff800021608c00,3,fffffd807f7d74e0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff97a8,fffffd807e729350,fffffd807f7d74e0,ffff800021608cc8,ffff800021608ca0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff8000ffff97a8,4,1,ffff800000cfb2e0,e7c) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff8000ffff97a8,4,1,ffff800000cfb2e0,e7c) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilewritev(ffff8000ffff97a8,4,ffff800021608e48,0,ffff800021608f40) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_write(ffff8000ffff97a8,ffff800021608ee0,ffff800021608f40) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff800021608fb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda100, count: -10