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(fffffd806983c578,fffffd806983c690,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:316 [inline] sblock(fffffd806983c578,fffffd806983c690,1) at sblock+0x4a sys/kern/uipc_socket2.c:371 sosend(fffffd806983c578,0,ffff800024aff240,0,0,0) at sosend+0x27c sys/kern/uipc_socket.c:520 fifo_write(ffff800024aff190) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:279 VOP_WRITE(fffffd8070cc6b30,ffff800024aff240,3,fffffd807f7d7900) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000215fcfc0,fffffd8070cc6b30,fffffd807f7d7900,ffff800024aff308,ffff800024aff2e0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff8000215fcfc0,f9,0,ffff8000006c56f0,40) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff8000215fcfc0,f9,0,ffff8000006c56f0,40) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilereadv(ffff8000215fcfc0,f9,ffff800024aff478,0,ffff800024aff570) at dofilereadv+0x2e0 sys/kern/sys_generic.c:269 sys_read(ffff8000215fcfc0,ffff800024aff510,ffff800024aff570) at sys_read+0x83 sys/kern/sys_generic.c:173 syscall(ffff800024aff5e0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0d80, count: -10 ddb> show registers rdi 0 rsi 0 rbp 0xffff800024aff050 rbx 0xfffffd806983c578 rdx 0 rcx 0xfffffd806983c578 rax 0xafd885976625f3f6 r8 0 r9 0 r10 0x9ac1d8bcdb1f0fd5 r11 0x138141cbdc2669f4 r12 0xfffffd806983c501 r13 0x1 r14 0xfffffd806983c6e0 r15 0xfffffd806983c578 rip 0xffffffff817d644a sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800024afeff0 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb> show proc PROC (syz-executor.2) pid=481248 stat=onproc flags process=2 proc=1 pri=24, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000215fca80,0xffff8000216102c0 process=0xffff8000ffff63f8 user=0xffff800024afa000, vmspace=0xfffffd806d9b7778 estcpu=32, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 36134 488185 73029 0 3 0x80 nanoslp syz-executor.4 36134 279928 73029 0 3 0x4000080 lockf syz-executor.4 36134 214130 73029 0 3 0x4000080 fsleep syz-executor.4 88469 483088 32897 0 2 0 syz-executor.6 88469 187226 32897 0 3 0x4000080 msgwait syz-executor.6 88469 372080 32897 0 3 0x4000080 msgwait syz-executor.6 55072 159948 11758 0 3 0x80 nanoslp syz-executor.3 55072 462347 11758 0 3 0x4000080 msgwait syz-executor.3 55072 218956 11758 0 3 0x4000080 fsleep syz-executor.3 90893 167250 95351 0 3 0x80 nanoslp syz-executor.1 90893 30889 95351 0 3 0x4000080 msgwait syz-executor.1 65170 235271 0 0 3 0x14200 bored sosplice 11758 308373 39417 0 3 0x82 nanoslp syz-executor.3 76056 35123 0 0 3 0x14280 nfsidl nfsio 63577 119608 0 0 3 0x14280 nfsidl nfsio 5669 400695 0 0 3 0x14280 nfsidl nfsio 80252 312312 0 0 3 0x14280 nfsidl nfsio 94472 382408 0 0 3 0x14280 nfsidl nfsio 29328 89934 0 0 3 0x14280 nfsidl nfsio 9381 371636 0 0 3 0x14280 nfsidl nfsio 17560 5885 0 0 3 0x14280 nfsidl nfsio 83641 294189 0 0 3 0x14280 nfsidl nfsio 74128 376706 0 0 3 0x14280 nfsidl nfsio 78803 503658 0 0 3 0x14280 nfsidl nfsio 61255 116423 0 0 3 0x14280 nfsidl nfsio 12238 72974 0 0 3 0x14280 nfsidl nfsio 45030 443080 0 0 3 0x14280 nfsidl nfsio 7428 412631 0 0 3 0x14280 nfsidl nfsio 79751 263469 0 0 3 0x14280 nfsidl nfsio 63150 416340 0 0 3 0x14280 nfsidl nfsio 17686 448153 0 0 3 0x14280 nfsidl nfsio 30665 433290 0 0 3 0x14280 nfsidl nfsio 25394 34879 0 0 3 0x14280 nfsidl nfsio 73029 304343 39417 0 3 0x82 nanoslp syz-executor.4 41682 134789 39417 0 2 0x83 syz-executor.7 32897 523205 39417 0 3 0x82 nanoslp syz-executor.6 66099 431317 39417 0 3 0x82 nanoslp syz-executor.5 *83042 481248 39417 0 7 0x3 syz-executor.2 95351 482746 39417 0 3 0x82 nanoslp syz-executor.1 86256 38807 39417 0 3 0x82 nanoslp syz-executor.0 39417 187361 86871 0 2 0x83 syz-fuzzer 39417 262250 86871 0 3 0x4000082 thrsleep syz-fuzzer 39417 465639 86871 0 3 0x4000082 thrsleep syz-fuzzer 39417 76864 86871 0 3 0x4000082 kqread syz-fuzzer 39417 177412 86871 0 3 0x4000082 thrsleep syz-fuzzer 39417 115762 86871 0 3 0x4000082 thrsleep syz-fuzzer 39417 1442 86871 0 3 0x4000082 thrsleep syz-fuzzer 39417 218704 86871 0 3 0x4000082 thrsleep syz-fuzzer 86871 400662 86971 0 3 0x10008a sigsusp ksh 86971 503044 74484 0 3 0x9a kqread sshd 44025 227456 1 0 3 0x100083 ttyin getty 74484 310584 1 0 3 0x88 kqread sshd 93157 334330 64561 73 3 0x1100090 kqread syslogd 64561 269119 1 0 3 0x100082 netio syslogd 15343 13781 1 0 3 0x100080 kqread resolvd 18651 292936 98844 77 3 0x100092 kqread dhcpleased 31339 145610 98844 77 3 0x100092 kqread dhcpleased 98844 350210 1 0 3 0x80 kqread dhcpleased 14440 186751 0 0 3 0x14200 bored smr 7262 35512 0 0 2 0x14200 zerothread 87867 157808 0 0 3 0x14200 aiodoned aiodoned 97777 197931 0 0 3 0x14200 syncer update 47315 355478 0 0 3 0x14200 cleaner cleaner 49740 102006 0 0 3 0x14200 reaper reaper 49268 358282 0 0 3 0x14200 pgdaemon pagedaemon 42700 87901 0 0 3 0x14200 bored viomb 31657 456670 0 0 3 0x40014200 acpi0 acpi0 67887 492816 0 0 3 0x14200 bored softnet 95324 432456 0 0 3 0x14200 bored softnet 29883 23593 0 0 3 0x14200 bored softnet 62688 242923 0 0 3 0x14200 bored softnet 51743 268986 0 0 3 0x14200 bored systqmp 31376 99139 0 0 3 0x14200 bored systq 92898 495443 0 0 3 0x40014200 bored softclock 51931 385587 0 0 3 0x40014200 idle0 1 488966 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 6466K 7379K 78643K 13462 0 pcb 13 11K 12K 78643K 55 0 rtable 229 6K 8K 78643K 446 0 ifaddr 84 17K 18K 78643K 125 0 sysctl 2 0K 0K 78643K 2 0 counters 27 17K 17K 78643K 28 0 ioctlops 0 0K 4K 78643K 148 0 iov 0 0K 16K 78643K 41 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1344 84K 84K 78643K 1874 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 7 0K 0K 78643K 7 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 85K 78643K 901 0 proc 57 59K 83K 78643K 504 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 18 0 in_multi 99 6K 6K 78643K 129 0 ether_multi 1 0K 0K 78643K 4 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 61 281K 281K 78643K 61 0 exec 0 0K 2K 78643K 795 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 230 224K 228K 78643K 6315 0 UVM aobj 8 2K 2K 78643K 8 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 13 0 NDP 11 0K 2K 78643K 32 0 temp 129 4722K 4786K 78643K 18393 0 kqueue 12 18K 22K 78643K 73 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 47 0 44 1 0 1 1 0 8 0 rtentry 112 130 0 23 4 0 4 4 0 8 0 unpcb 136 236 0 223 3 2 1 3 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 26 0 26 1 1 0 1 0 8 0 tcpcb 736 444 0 440 22 15 7 13 0 8 6 arp 88 20 0 2 1 0 1 1 0 8 0 inpcb 312 787 0 780 23 17 6 11 0 8 5 nd6 48 29 0 7 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 pfrktable 1344 21 0 21 2 1 1 1 0 8 1 pftag 88 6 0 5 2 1 1 1 0 8 0 pfrule 1360 19 0 15 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 545 0 108 29 1 28 29 0 8 0 art_table 32 546 0 108 4 0 4 4 0 8 0 art_node 16 129 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 143 0 103 1 0 1 1 0 8 0 semapl 112 5 0 0 1 0 1 1 0 8 0 shmpl 112 5 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2675 0 1227 91 0 91 91 0 8 0 ffsino 240 2675 0 1227 86 0 86 86 0 8 0 nchpl 144 3993 0 2355 63 0 63 63 0 8 0 uvmvnodes 80 3131 0 0 64 0 64 64 0 8 0 vnodes 224 3131 0 0 185 0 185 185 0 8 0 namei 1024 14045 0 14045 2 1 1 2 0 8 1 vcpupl 1984 9 0 0 2 0 2 2 0 8 0 vmpool 528 11 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 6 0 6 2 1 1 1 0 8 1 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 11986 0 11986 10 8 2 8 0 8 2 plimitpl 152 192 0 178 1 0 1 1 0 8 0 sigapl 424 1208 0 1144 8 0 8 8 0 8 0 futexpl 64 8377 0 8375 1 0 1 1 0 8 0 knotepl 120 13989 0 13909 5 1 4 5 0 8 0 kqueuepl 184 115 0 107 1 0 1 1 0 8 0 pipepl 304 212 0 184 3 0 3 3 0 8 0 fdescpl 432 1171 0 1145 5 1 4 4 0 8 0 filepl 120 6704 0 6465 22 10 12 14 0 8 4 lockfpl 104 204 0 200 1 0 1 1 0 8 0 lockfspl 48 69 0 66 1 0 1 1 0 8 0 sessionpl 144 24 0 8 1 0 1 1 0 8 0 pgrppl 48 24 0 8 1 0 1 1 0 8 0 ucredpl 96 1152 0 1142 1 0 1 1 0 8 0 zombiepl 144 1146 0 1144 1 0 1 1 0 8 0 processpl 1000 1208 0 1144 9 0 9 9 0 8 0 procpl 672 2556 0 2478 8 0 8 8 0 8 0 sockpl 448 1070 0 1047 41 31 10 25 0 8 7 pool(sockpl): free list modified: page 0xfffffd806983c000; item ordinal 0; addr 0xfffffd806983c578 (p 0xfffffd8068eee000); offset 0x10=0xdead9eef mcl64k 65536 25 0 25 2 1 1 1 0 8 1 mcl16k 16384 5 0 5 2 2 0 1 0 8 0 mcl12k 12288 94 0 94 1 0 1 1 0 8 1 mcl9k 9216 12 0 12 2 1 1 1 0 8 1 mcl8k 8192 57 0 57 3 2 1 1 0 8 1 mcl4k 4096 101 0 101 1 0 1 1 0 8 1 mcl2k2 2112 7 0 7 4 3 1 1 0 8 1 mcl2k 2048 66540 0 66479 14 5 9 10 0 8 0 mtagpl 96 446 0 20 12 1 11 11 0 8 0 mbufpl 256 112218 0 111520 45 0 45 45 0 8 0 bufpl 288 5498 0 150 382 0 382 382 0 8 0 anonpl 24 198784 0 183808 98 4 94 98 0 188 0 amapchunkpl 152 16716 0 16163 26 2 24 25 0 158 0 amappl16 200 2401 0 1844 31 0 31 31 0 8 0 amappl15 192 98 0 95 1 0 1 1 0 8 0 amappl14 184 133 0 129 1 0 1 1 0 8 0 amappl13 176 87 0 84 1 0 1 1 0 8 0 amappl12 168 324 0 319 2 1 1 1 0 8 0 amappl11 160 212 0 194 1 0 1 1 0 8 0 amappl10 152 144 0 139 1 0 1 1 0 8 0 amappl9 144 590 0 583 1 0 1 1 0 8 0 amappl8 136 548 0 505 2 0 2 2 0 8 0 amappl7 128 105 0 96 1 0 1 1 0 8 0 amappl6 120 286 0 269 2 1 1 2 0 8 0 amappl5 112 662 0 650 1 0 1 1 0 8 0 amappl4 104 1060 0 1031 2 1 1 2 0 8 0 amappl3 96 3149 0 3099 2 0 2 2 0 8 0 amappl2 88 1674 0 1612 3 1 2 3 0 8 0 amappl1 80 29653 0 29035 19 4 15 19 0 8 1 amappl 88 5839 0 5693 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 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1182 0 1147 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1182 0 1147 1 0 1 1 0 8 0 vmmpekpl 168 12941 0 12892 3 0 3 3 0 8 0 vmmpepl 168 115951 0 113544 125 7 118 118 0 357 3 vmsppl 272 1181 0 1147 4 1 3 3 0 8 0 rwobjpl 24 32093 0 27449 29 0 29 29 0 8 0 pdppl 4096 2370 0 2303 172 99 73 74 0 8 6 pvpl 32 512479 0 493227 238 43 195 238 0 265 32 pmappl 216 1181 0 1147 3 0 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 927 0 177 22 0 22 22 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sblock(fffffd806983c578,fffffd806983c690,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:316 [inline] sblock(fffffd806983c578,fffffd806983c690,1) at sblock+0x4a sys/kern/uipc_socket2.c:371 sosend(fffffd806983c578,0,ffff800024aff240,0,0,0) at sosend+0x27c sys/kern/uipc_socket.c:520 fifo_write(ffff800024aff190) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:279 VOP_WRITE(fffffd8070cc6b30,ffff800024aff240,3,fffffd807f7d7900) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000215fcfc0,fffffd8070cc6b30,fffffd807f7d7900,ffff800024aff308,ffff800024aff2e0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff8000215fcfc0,f9,0,ffff8000006c56f0,40) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff8000215fcfc0,f9,0,ffff8000006c56f0,40) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilereadv(ffff8000215fcfc0,f9,ffff800024aff478,0,ffff800024aff570) at dofilereadv+0x2e0 sys/kern/sys_generic.c:269 sys_read(ffff8000215fcfc0,ffff800024aff510,ffff800024aff570) at sys_read+0x83 sys/kern/sys_generic.c:173 syscall(ffff800024aff5e0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0d80, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace sblock(fffffd806983c578,fffffd806983c690,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:316 [inline] sblock(fffffd806983c578,fffffd806983c690,1) at sblock+0x4a sys/kern/uipc_socket2.c:371 sosend(fffffd806983c578,0,ffff800024aff240,0,0,0) at sosend+0x27c sys/kern/uipc_socket.c:520 fifo_write(ffff800024aff190) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:279 VOP_WRITE(fffffd8070cc6b30,ffff800024aff240,3,fffffd807f7d7900) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000215fcfc0,fffffd8070cc6b30,fffffd807f7d7900,ffff800024aff308,ffff800024aff2e0) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff8000215fcfc0,f9,0,ffff8000006c56f0,40) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff8000215fcfc0,f9,0,ffff8000006c56f0,40) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilereadv(ffff8000215fcfc0,f9,ffff800024aff478,0,ffff800024aff570) at dofilereadv+0x2e0 sys/kern/sys_generic.c:269 sys_read(ffff8000215fcfc0,ffff800024aff510,ffff800024aff570) at sys_read+0x83 sys/kern/sys_generic.c:173 syscall(ffff800024aff5e0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0d80, count: -10