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(fffffd806f005c58,fffffd806f005d70,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd806f005c58,fffffd806f005d70,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd806f005c58,0,ffff80002b396b90,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff80002b396ae0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd8068408c08,ffff80002b396b90,3,fffffd807f7d78a0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800021621a40,fffffd8068408c08,fffffd807f7d78a0,ffff80002b396c50,ffff80002b396c30) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrnamei(ffff800021621a40,ffff80002164e800) at ktrnamei+0x129 ktrwrite sys/kern/kern_ktrace.c:609 [inline] ktrnamei(ffff800021621a40,ffff80002164e800) at ktrnamei+0x129 sys/kern/kern_ktrace.c:224 namei(ffff80002b396e30) at namei+0x1af sys/kern/vfs_lookup.c:165 domkdirat(ffff800021621a40,ffffff9c,7f7ffffca310,1ff) at domkdirat+0x75 sys/kern/vfs_syscalls.c:3086 syscall(ffff80002b397010) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffca380, count: -10 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002b3969a0 rbx 0xfffffd806f005d70 rdx 0 rcx 0xffff800021621a44 rax 0x6bb73299d1e85c47 r8 0 r9 0 r10 0xd8cf4c616c65dfb9 r11 0xb8820d877e601757 r12 0xfffffd806f005c01 r13 0x1 r14 0xfffffd806f005dc0 r15 0xfffffd806f005c58 rip 0xffffffff81be2b1a sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002b396940 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb> show proc PROC (syz-executor.7) pid=231997 stat=onproc flags process=2 proc=1 pri=24, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff80002168a2a8,0xffff80002160dd00 process=0xffff8000230d3b80 user=0xffff80002b392000, vmspace=0xfffffd806c577120 estcpu=28, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 82820 289104 19794 0 3 0x80 nanoslp syz-executor.3 82820 353702 19794 0 2 0x4000081 syz-executor.3 82820 131595 19794 0 2 0x4000081 syz-executor.3 82820 135766 19794 0 2 0x4000081 syz-executor.3 82820 200481 19794 0 3 0x4000080 piperd syz-executor.3 82820 61139 19794 0 3 0x4000080 fsleep syz-executor.3 77958 173251 0 0 3 0x14200 bored sosplice *22781 231997 66322 0 7 0x3 syz-executor.7 66394 394890 66322 0 2 0x83 syz-executor.6 44457 289237 66322 0 2 0x83 syz-executor.5 57067 132747 66322 0 2 0x83 syz-executor.4 19794 293868 66322 0 2 0x83 syz-executor.3 87770 396120 66322 0 2 0x83 syz-executor.2 54867 512656 66322 0 2 0x83 syz-executor.0 72292 463771 66322 0 2 0x83 syz-executor.1 66322 523385 969 0 3 0x82 thrsleep syz-fuzzer 66322 360837 969 0 2 0x4000083 syz-fuzzer 66322 71415 969 0 3 0x4000082 thrsleep syz-fuzzer 66322 351579 969 0 3 0x4000082 thrsleep syz-fuzzer 66322 496152 969 0 3 0x4000082 thrsleep syz-fuzzer 66322 140295 969 0 3 0x4000082 thrsleep syz-fuzzer 66322 214234 969 0 3 0x4000082 thrsleep syz-fuzzer 66322 330357 969 0 2 0x4000083 syz-fuzzer 66322 31913 969 0 3 0x4000082 thrsleep syz-fuzzer 969 413142 3837 0 3 0x10008a sigsusp ksh 3837 202050 561 0 3 0x9a kqread sshd 29948 370603 1 0 3 0x100083 ttyin getty 561 25906 1 0 3 0x88 kqread sshd 50649 118932 20570 73 3 0x1100090 kqread syslogd 20570 349397 1 0 3 0x100082 netio syslogd 96030 448090 1 0 3 0x100080 kqread resolvd 41508 340865 36863 77 3 0x100092 kqread dhcpleased 7274 249851 36863 77 3 0x100092 kqread dhcpleased 36863 509555 1 0 3 0x80 kqread dhcpleased 84946 148003 0 0 3 0x14200 bored smr 47197 343012 0 0 2 0x14200 zerothread 17203 254332 0 0 3 0x14200 aiodoned aiodoned 68940 387831 0 0 3 0x14200 syncer update 87584 99025 0 0 3 0x14200 cleaner cleaner 6087 446484 0 0 3 0x14200 reaper reaper 68820 136104 0 0 3 0x14200 pgdaemon pagedaemon 36726 35318 0 0 3 0x14200 bored viomb 23429 198676 0 0 3 0x40014200 acpi0 acpi0 99827 126875 0 0 3 0x14200 bored softnet 92019 245039 0 0 3 0x14200 bored systqmp 93636 180223 0 0 3 0x14200 bored systq 79696 468420 0 0 3 0x40014200 bored softclock 2018 255200 0 0 3 0x40014200 idle0 1 287584 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 10187 6422K 6800K 78643K 12456 0 pcb 13 12K 13K 78643K 189 0 rtable 191 5K 6K 78643K 401 0 ifaddr 84 17K 18K 78643K 123 0 counters 27 17K 17K 78643K 33 0 ioctlops 0 0K 4K 78643K 234 0 iov 1 12K 12K 78643K 138 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1333 83K 83K 78643K 1605 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 21 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 19 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 11 37K 65K 78643K 1064 0 proc 57 59K 75K 78643K 528 0 subproc 104 6K 6K 78643K 117 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 117 0 in_multi 79 5K 6K 78643K 154 0 ether_multi 1 0K 0K 78643K 25 0 mrt 1 0K 0K 78643K 1 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 763 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 219 128K 130K 78643K 7004 0 UVM aobj 131 7K 7K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 32 0 NDP 12 0K 2K 78643K 36 0 temp 116 4736K 4796K 78643K 20004 0 kqueue 12 18K 24K 78643K 79 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 53 0 50 1 0 1 1 0 8 0 rtentry 112 125 0 38 4 0 4 4 0 8 0 unpcb 136 719 0 706 8 5 3 6 0 8 2 syncache 296 13 0 13 2 1 1 1 0 8 1 tcpqe 32 4 0 4 1 0 1 1 0 8 1 tcpcb 736 173 0 168 10 7 3 8 0 8 1 arp 88 21 0 5 1 0 1 1 0 8 0 ipq 40 3 0 3 1 1 0 1 0 8 0 ipqe 40 6 0 6 1 1 0 1 0 8 0 inpcb 312 757 0 749 20 16 4 16 0 8 3 nd6 48 27 0 6 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1152 5 0 5 1 0 1 1 0 8 1 pfstscr 40 36 0 36 1 0 1 1 0 8 1 pfosfp 40 4 0 3 1 0 1 1 0 8 0 pfosfpen 112 4 0 0 1 0 1 1 0 8 0 pfstkey 112 36 0 36 1 0 1 1 0 8 1 pfstate 336 18 0 18 1 0 1 1 0 8 1 pfrule 1360 3 0 0 1 0 1 1 0 8 0 rttmrq 48 4 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 507 0 164 29 3 26 29 0 8 2 art_table 32 508 0 164 4 0 4 4 0 8 0 art_node 16 124 0 48 1 0 1 1 0 8 0 sysvmsgpl 40 34 0 3 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2771 0 1281 94 0 94 94 0 8 0 ffsino 240 2771 0 1281 88 0 88 88 0 8 0 nchpl 144 4408 0 2767 63 0 63 63 0 8 0 uvmvnodes 80 3111 0 0 64 0 64 64 0 8 0 vnodes 224 3111 0 0 183 0 183 183 0 8 0 namei 1024 16822 0 16821 2 1 1 2 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 528 4 0 0 1 0 1 1 0 8 0 kstatmem 264 36 0 12 2 0 2 2 0 8 0 scxspl 216 14004 0 14004 14 8 6 8 0 8 6 plimitpl 152 140 0 126 1 0 1 1 0 8 0 sigapl 424 1346 0 1306 5 0 5 5 0 8 0 futexpl 64 11222 0 11221 1 0 1 1 0 8 0 knotepl 120 15908 0 15828 7 3 4 7 0 8 0 kqueuepl 184 231 0 223 5 3 2 4 0 8 1 pipepl 304 309 0 280 8 5 3 8 0 8 0 fdescpl 432 1324 0 1302 4 0 4 4 0 8 0 filepl 120 8800 0 8559 15 5 10 14 0 8 2 lockfpl 104 102 0 97 1 0 1 1 0 8 0 lockfspl 48 49 0 44 1 0 1 1 0 8 0 sessionpl 144 24 0 8 1 0 1 1 0 8 0 pgrppl 48 30 0 14 1 0 1 1 0 8 0 ucredpl 96 1452 0 1441 1 0 1 1 0 8 0 zombiepl 144 1310 0 1306 1 0 1 1 0 8 0 processpl 1000 1346 0 1306 6 0 6 6 0 8 0 procpl 672 2778 0 2725 6 0 6 6 0 8 0 sosppl 168 6 0 6 1 0 1 1 0 8 1 sockpl 448 1536 0 1512 32 21 11 25 0 8 7 pool(sockpl): free list modified: page 0xfffffd806f005000; item ordinal 0; addr 0xfffffd806f005c58 (p 0xfffffd806337a000); offset 0x10=0xdeaf9ead mcl64k 65536 27 0 27 3 2 1 1 0 8 1 mcl16k 16384 9 0 9 3 2 1 1 0 8 1 mcl12k 12288 25 0 25 2 1 1 1 0 8 1 mcl9k 9216 12 0 12 2 1 1 1 0 8 1 mcl8k 8192 44 0 44 1 0 1 1 0 8 1 mcl4k 4096 121 0 121 2 1 1 1 0 8 1 mcl2k2 2112 13 0 13 2 1 1 1 0 8 1 mcl2k 2048 76041 0 75992 12 5 7 9 0 8 0 mtagpl 96 240 0 91 6 2 4 4 0 8 0 mbufpl 256 126680 0 126295 28 1 27 27 0 8 0 bufpl 288 5741 0 140 401 0 401 401 0 8 0 anonpl 24 251261 0 233864 151 16 135 135 0 188 22 amapchunkpl 152 20374 0 19777 37 9 28 35 0 158 1 amappl16 200 3928 0 3300 58 12 46 46 0 8 12 amappl15 192 2 0 0 1 0 1 1 0 8 0 amappl14 184 112 0 109 1 0 1 1 0 8 0 amappl13 176 208 0 205 1 0 1 1 0 8 0 amappl12 168 247 0 240 1 0 1 1 0 8 0 amappl11 160 329 0 313 1 0 1 1 0 8 0 amappl10 152 124 0 121 1 0 1 1 0 8 0 amappl9 144 631 0 625 1 0 1 1 0 8 0 amappl8 136 561 0 513 2 0 2 2 0 8 0 amappl7 128 110 0 100 1 0 1 1 0 8 0 amappl6 120 326 0 312 2 1 1 2 0 8 0 amappl5 112 771 0 762 1 0 1 1 0 8 0 amappl4 104 1156 0 1130 2 1 1 2 0 8 0 amappl3 96 3474 0 3437 2 0 2 2 0 8 0 amappl2 88 1848 0 1787 3 1 2 3 0 8 0 amappl1 80 32736 0 32205 19 4 15 19 0 8 0 amappl 88 6524 0 6388 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 1328 0 1302 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1328 0 1302 1 0 1 1 0 8 0 vmmpekpl 168 13413 0 13372 3 0 3 3 0 8 0 vmmpepl 168 130933 0 128794 155 24 131 154 0 357 16 vmsppl 272 1327 0 1302 4 1 3 3 0 8 0 rwobjpl 24 35557 0 30796 31 0 31 31 0 8 0 pdppl 4096 2662 0 2608 104 36 68 68 0 8 14 pvpl 32 582147 0 561509 241 29 212 230 0 265 27 pmappl 216 1327 0 1302 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 842 0 98 22 0 22 22 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sblock(fffffd806f005c58,fffffd806f005d70,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd806f005c58,fffffd806f005d70,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd806f005c58,0,ffff80002b396b90,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff80002b396ae0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd8068408c08,ffff80002b396b90,3,fffffd807f7d78a0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800021621a40,fffffd8068408c08,fffffd807f7d78a0,ffff80002b396c50,ffff80002b396c30) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrnamei(ffff800021621a40,ffff80002164e800) at ktrnamei+0x129 ktrwrite sys/kern/kern_ktrace.c:609 [inline] ktrnamei(ffff800021621a40,ffff80002164e800) at ktrnamei+0x129 sys/kern/kern_ktrace.c:224 namei(ffff80002b396e30) at namei+0x1af sys/kern/vfs_lookup.c:165 domkdirat(ffff800021621a40,ffffff9c,7f7ffffca310,1ff) at domkdirat+0x75 sys/kern/vfs_syscalls.c:3086 syscall(ffff80002b397010) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffca380, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace sblock(fffffd806f005c58,fffffd806f005d70,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd806f005c58,fffffd806f005d70,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd806f005c58,0,ffff80002b396b90,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff80002b396ae0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd8068408c08,ffff80002b396b90,3,fffffd807f7d78a0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800021621a40,fffffd8068408c08,fffffd807f7d78a0,ffff80002b396c50,ffff80002b396c30) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrnamei(ffff800021621a40,ffff80002164e800) at ktrnamei+0x129 ktrwrite sys/kern/kern_ktrace.c:609 [inline] ktrnamei(ffff800021621a40,ffff80002164e800) at ktrnamei+0x129 sys/kern/kern_ktrace.c:224 namei(ffff80002b396e30) at namei+0x1af sys/kern/vfs_lookup.c:165 domkdirat(ffff800021621a40,ffffff9c,7f7ffffca310,1ff) at domkdirat+0x75 sys/kern/vfs_syscalls.c:3086 syscall(ffff80002b397010) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffca380, count: -10