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(fffffd807594e1c8,fffffd807594e2e0,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd807594e1c8,fffffd807594e2e0,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd807594e1c8,0,ffff800027ff8e50,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:527 fifo_write(ffff800027ff8da0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:288 VOP_WRITE(fffffd80669a9328,ffff800027ff8e50,3,fffffd807f7d7960) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002164c000,fffffd80669a9328,fffffd807f7d7960,ffff800027ff8f10,ffff800027ff8ef0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff80002164c000,f8,1,ffff8000006c3e50,c) at ktrgenio+0x26b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff80002164c000,f8,1,ffff8000006c3e50,c) at ktrgenio+0x26b sys/kern/kern_ktrace.c:265 dofilewritev(ffff80002164c000,f8,ffff800027ff9098,0,ffff800027ff9190) at dofilewritev+0x38a sys/kern/sys_generic.c:401 sys_write(ffff80002164c000,ffff800027ff9130,ffff800027ff9190) at sys_write+0x83 sys/kern/sys_generic.c:300 syscall(ffff800027ff9200) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff14c0, count: -10 ddb> show registers rdi 0 rsi 0 rbp 0xffff800027ff8c60 rbx 0xfffffd807594e2e0 rdx 0 rcx 0xffff80002164c004 rax 0xe6e18c452767242 r8 0 r9 0 r10 0x15fa718ead3aedef r11 0x75ff256c2be254fc r12 0xfffffd807594e101 r13 0x1 r14 0xfffffd807594e330 r15 0xfffffd807594e1c8 rip 0xffffffff81d4c7fa sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800027ff8c00 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb> show proc PROC (syz-executor.1) pid=334729 stat=onproc flags process=2 proc=1 pri=24, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff800027f88fd0,0xffff80002164cfd0 process=0xffff8000216e13c0 user=0xffff800027ff4000, vmspace=0xfffffd80773a6110 estcpu=31, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 37967 437047 94228 0 3 0x80 nanoslp syz-executor.2 37967 495184 94228 0 3 0x4000080 lockf syz-executor.2 37967 323503 94228 0 3 0x4000080 fsleep syz-executor.2 *86229 334729 43410 0 7 0x3 syz-executor.1 24666 316837 43410 0 3 0x82 nanoslp syz-executor.3 26252 286194 43410 0 2 0x83 syz-executor.0 52169 246052 0 0 3 0x14280 nfsidl nfsio 35876 157199 0 0 3 0x14280 nfsidl nfsio 27098 147303 0 0 3 0x14280 nfsidl nfsio 89489 435036 0 0 3 0x14280 nfsidl nfsio 81498 449674 0 0 3 0x14280 nfsidl nfsio 14674 255319 0 0 3 0x14280 nfsidl nfsio 6612 64543 0 0 3 0x14200 acct acct 94228 54827 43410 0 3 0x82 nanoslp syz-executor.2 84825 126296 1 0 3 0x100083 ttyin getty 91714 71824 0 0 3 0x14200 bored sosplice 43410 424244 55235 0 3 0x82 thrsleep syz-fuzzer 43410 241067 55235 0 3 0x4000082 thrsleep syz-fuzzer 43410 465124 55235 0 2 0x4000083 syz-fuzzer 43410 25288 55235 0 2 0x4000083 syz-fuzzer 43410 463786 55235 0 3 0x4000082 thrsleep syz-fuzzer 43410 383864 55235 0 3 0x4000082 thrsleep syz-fuzzer 43410 322949 55235 0 3 0x4000082 kqread syz-fuzzer 55235 509827 30603 0 3 0x10008a sigsusp ksh 30603 281620 76097 0 3 0x9a poll sshd 76097 243688 1 0 3 0x88 poll sshd 91938 203302 98492 73 3 0x100090 kqread syslogd 98492 354651 1 0 3 0x100082 netio syslogd 88876 249490 1 0 3 0x100080 kqread resolvd 92104 33320 70304 77 3 0x100092 kqread dhcpleased 51557 94361 70304 77 3 0x100092 kqread dhcpleased 70304 358013 1 0 3 0x80 kqread dhcpleased 77139 110843 0 0 3 0x14200 bored smr 26851 282097 0 0 2 0x14200 zerothread 9316 148284 0 0 3 0x14200 aiodoned aiodoned 1122 36024 0 0 3 0x14200 syncer update 32216 139302 0 0 3 0x14200 cleaner cleaner 53409 32465 0 0 3 0x14200 reaper reaper 55497 84325 0 0 3 0x14200 pgdaemon pagedaemon 20626 311170 0 0 3 0x14200 bored viomb 11584 355462 0 0 3 0x40014200 acpi0 acpi0 46379 226676 0 0 3 0x14200 bored softnet 90843 517042 0 0 3 0x14200 bored systqmp 46804 357116 0 0 3 0x14200 bored systq 65150 191725 0 0 3 0x40014200 bored softclock 21785 419544 0 0 3 0x40014200 idle0 1 470044 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 10168 6411K 7012K 78643K 27851 0 pcb 13 18K 20K 78643K 1481 0 rtable 196 29K 29K 78643K 2135 0 ifaddr 76 21K 22K 78643K 1652 0 sysctl 2 0K 0K 78643K 2 0 counters 23 16K 17K 78643K 177 0 ioctlops 0 0K 4K 78643K 2503 0 iov 0 0K 28K 78643K 1039 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1411 89K 89K 78643K 6091 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 56 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 1718 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 7 21K 49K 78643K 8855 0 sigio 0 0K 0K 78643K 331 0 proc 68 55K 71K 78643K 1519 0 subproc 52 6K 6K 78643K 468 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 527 0 in_multi 48 3K 3K 78643K 778 0 ether_multi 1 0K 0K 78643K 143 0 mrt 1 0K 0K 78643K 55 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 169 758K 758K 78643K 169 0 exec 0 0K 2K 78643K 2098 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 327 548K 1089K 78643K 108708 0 UVM aobj 131 11K 11K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 586 0 NDP 8 0K 1K 78643K 249 0 temp 111 4205K 4271K 78643K 54714 0 kqueue 10 14K 22K 78643K 386 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 120 744 0 741 6 5 1 3 0 8 0 rtentry 112 588 0 537 3 1 2 3 0 8 0 unpcb 136 7227 0 7212 67 64 3 10 0 8 2 syncache 296 38 0 38 11 11 0 1 0 8 0 tcpqe 32 50 0 50 3 3 0 1 0 8 0 tcpcb 736 3106 0 3102 98 96 2 14 0 8 1 arp 88 89 0 79 1 0 1 1 0 8 0 ipq 40 23 0 23 8 8 0 1 0 8 0 ipqe 40 450 0 450 8 8 0 1 0 8 0 inpcb 304 14142 0 14134 122 120 2 16 0 8 0 rttmr 72 16 0 16 4 4 0 1 0 8 0 ip6q 72 7 0 7 4 3 1 1 0 8 1 ip6af 40 14 0 14 4 3 1 1 0 8 1 nd6 48 132 0 122 1 0 1 1 0 8 0 pkpcb 40 16 0 16 4 4 0 1 0 8 0 kcovpl 48 36 0 32 1 0 1 1 0 8 0 ppxss 1152 44 0 44 11 11 0 1 0 8 0 pfstscr 40 79 0 77 1 0 1 1 0 8 0 pfosfp 40 39 0 36 1 0 1 1 0 8 0 pfosfpen 112 39 0 0 2 0 2 2 0 8 0 pfrke_plain 168 7 0 7 1 1 0 1 0 8 0 pfrktable 1344 179 0 147 5 2 3 3 0 8 0 pftag 88 231 0 216 1 0 1 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 112 158 0 154 1 0 1 1 0 8 0 pfstate 320 79 0 77 1 0 1 1 0 8 0 pfrule 1360 463 0 233 23 3 20 20 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2212 0 1976 30 14 16 19 0 8 0 art_table 32 2213 0 1976 4 1 3 3 0 8 0 art_node 16 538 0 494 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 9 2 1 1 1 0 8 0 semapl 112 1713 0 1703 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 14317 0 12889 90 0 90 90 0 8 0 ffsino 240 14317 0 12889 85 0 85 85 0 8 0 nchpl 144 26571 0 24978 61 0 61 61 0 8 0 rtmask 32 14 0 14 1 1 0 1 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 94746 0 94746 1 0 1 1 0 8 1 vcpupl 1984 36 0 0 5 0 5 5 0 8 0 vmpool 528 71 0 35 4 1 3 3 0 8 0 pfiaddrpl 120 241 0 177 2 0 2 2 0 8 0 scxspl 216 79508 0 79508 18 17 1 8 0 8 1 plimitpl 152 632 0 622 1 0 1 1 0 8 0 sigapl 424 9006 0 8967 8 3 5 7 0 8 0 futexpl 64 96270 0 96269 1 0 1 1 0 8 0 knotepl 112 5874 0 5824 4 2 2 3 0 8 0 kqueuepl 184 2157 0 2147 33 32 1 4 0 8 0 pipepl 304 1557 0 1541 23 21 2 7 0 8 0 fdescpl 432 8964 0 8946 3 0 3 3 0 8 0 filepl 120 69938 0 69787 74 67 7 13 0 8 2 lockfpl 104 2413 0 2409 5 3 2 2 0 8 1 lockfspl 48 637 0 634 1 0 1 1 0 8 0 sessionpl 144 54 0 42 1 0 1 1 0 8 0 pgrppl 48 86 0 74 1 0 1 1 0 8 0 ucredpl 96 7940 0 7930 1 0 1 1 0 8 0 zombiepl 144 8967 0 8966 1 0 1 1 0 8 0 processpl 1000 9006 0 8966 8 2 6 7 0 8 0 procpl 672 23579 0 23531 26 20 6 7 0 8 1 sosppl 168 63 0 63 12 11 1 1 0 8 1 sockpl 448 22159 0 22133 317 307 10 32 0 8 6 mcl64k 65536 460 0 460 11 10 1 1 0 8 1 mcl16k 16384 83 0 83 21 20 1 1 0 8 1 mcl12k 12288 233 0 233 12 11 1 1 0 8 1 mcl9k 9216 113 0 113 18 17 1 1 0 8 1 mcl8k 8192 578 0 578 10 9 1 1 0 8 1 mcl4k 4096 1145 0 1145 3 2 1 1 0 8 1 mcl2k2 2112 66 0 66 19 19 0 1 0 8 0 mcl2k 2048 94409 0 94366 18 11 7 11 0 8 0 mtagpl 96 2484 0 2443 23 21 2 9 0 8 0 mbufpl 256 216109 0 215857 177 151 26 72 0 8 2 bufpl 288 19494 0 13077 459 0 459 459 0 8 0 anonpl 24 2493135 0 2472650 260 111 149 154 0 188 20 amapchunkpl 152 378039 0 377406 1555 1497 58 657 0 158 30 amappl16 200 26034 0 25204 143 94 49 57 0 8 4 amappl15 192 1697 0 1695 1 0 1 1 0 8 0 amappl14 184 1013 0 1010 1 0 1 1 0 8 0 amappl13 176 253 0 251 1 0 1 1 0 8 0 amappl12 168 1536 0 1534 1 0 1 1 0 8 0 amappl11 160 473 0 460 1 0 1 1 0 8 0 amappl10 152 1646 0 1637 1 0 1 1 0 8 0 amappl9 144 784 0 782 1 0 1 1 0 8 0 amappl8 136 2974 0 2911 3 0 3 3 0 8 0 amappl7 128 2123 0 2111 1 0 1 1 0 8 0 amappl6 120 646 0 630 1 0 1 1 0 8 0 amappl5 112 10261 0 10245 1 0 1 1 0 8 0 amappl4 104 1905 0 1883 1 0 1 1 0 8 0 amappl3 96 2208 0 2190 1 0 1 1 0 8 0 amappl2 88 1148 0 1106 2 0 2 2 0 8 0 amappl1 80 160381 0 159946 17 6 11 12 0 8 0 amappl 88 107614 0 107423 6 0 6 6 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 9035 0 8981 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9035 0 8981 1 0 1 1 0 8 0 vmmpekpl 168 65506 0 65462 3 0 3 3 0 8 0 vmmpepl 168 835325 0 833153 333 219 114 138 0 357 4 vmsppl 272 9034 0 8981 5 1 4 4 0 8 0 rwobjpl 24 198462 0 190769 54 7 47 49 0 8 0 pdppl 4096 18078 0 17998 141 55 86 86 0 8 6 pvpl 32 4158246 0 4137188 376 168 208 219 0 265 24 pmappl 216 9034 0 8981 5 1 4 4 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1496 0 681 25 0 25 25 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sblock(fffffd807594e1c8,fffffd807594e2e0,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd807594e1c8,fffffd807594e2e0,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd807594e1c8,0,ffff800027ff8e50,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:527 fifo_write(ffff800027ff8da0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:288 VOP_WRITE(fffffd80669a9328,ffff800027ff8e50,3,fffffd807f7d7960) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002164c000,fffffd80669a9328,fffffd807f7d7960,ffff800027ff8f10,ffff800027ff8ef0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff80002164c000,f8,1,ffff8000006c3e50,c) at ktrgenio+0x26b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff80002164c000,f8,1,ffff8000006c3e50,c) at ktrgenio+0x26b sys/kern/kern_ktrace.c:265 dofilewritev(ffff80002164c000,f8,ffff800027ff9098,0,ffff800027ff9190) at dofilewritev+0x38a sys/kern/sys_generic.c:401 sys_write(ffff80002164c000,ffff800027ff9130,ffff800027ff9190) at sys_write+0x83 sys/kern/sys_generic.c:300 syscall(ffff800027ff9200) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff14c0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace sblock(fffffd807594e1c8,fffffd807594e2e0,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd807594e1c8,fffffd807594e2e0,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd807594e1c8,0,ffff800027ff8e50,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:527 fifo_write(ffff800027ff8da0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:288 VOP_WRITE(fffffd80669a9328,ffff800027ff8e50,3,fffffd807f7d7960) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002164c000,fffffd80669a9328,fffffd807f7d7960,ffff800027ff8f10,ffff800027ff8ef0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff80002164c000,f8,1,ffff8000006c3e50,c) at ktrgenio+0x26b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff80002164c000,f8,1,ffff8000006c3e50,c) at ktrgenio+0x26b sys/kern/kern_ktrace.c:265 dofilewritev(ffff80002164c000,f8,ffff800027ff9098,0,ffff800027ff9190) at dofilewritev+0x38a sys/kern/sys_generic.c:401 sys_write(ffff80002164c000,ffff800027ff9130,ffff800027ff9190) at sys_write+0x83 sys/kern/sys_generic.c:300 syscall(ffff800027ff9200) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff14c0, count: -10