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(fffffd807ac8dc70,fffffd807ac8dd88,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd807ac8dc70,fffffd807ac8dd88,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd807ac8dc70,0,ffff80002e7cadc0,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff80002e7cad10) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd8074788498,ffff80002e7cadc0,3,fffffd807f7d8a20) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800024ac6010,fffffd8074788498,fffffd807f7d8a20,ffff80002e7cae88,ffff80002e7cae60) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff800024ac6010,5,1,ffff8000006c38f0,ff52) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff800024ac6010,5,1,ffff8000006c38f0,ff52) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilewritev(ffff800024ac6010,5,ffff80002e7cb080,0,ffff80002e7cb180) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_writev(ffff800024ac6010,ffff80002e7cb128,ffff80002e7cb180) at sys_writev+0xa7 sys/kern/sys_generic.c:328 syscall(ffff80002e7cb1f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf4b9c2e230, count: -10 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002e7cabd0 rbx 0xfffffd807ac8dd88 rdx 0xffff800000c80b00 rcx 0xffff800024ac6014 rax 0x253c80a1ab43d9f5 r8 0 r9 0 r10 0x24b3d05c30c66548 r11 0x34ecbaf97a09e2df r12 0xfffffd807ac8dc01 r13 0x1 r14 0xfffffd807ac8ddd8 r15 0xfffffd807ac8dc70 rip 0xffffffff820e2a9a sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002e7cab70 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb> show proc PROC (syz-executor.2) pid=499590 stat=onproc flags process=0 proc=4000001 pri=24, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800024ac6a90,0xffff800026515d00 process=0xffff800021660028 user=0xffff80002e7c6000, vmspace=0xfffffd8076ca9450 estcpu=32, cpticks=0, pctcpu=0.4 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 18334 508484 67872 0 2 0 syz-executor.6 18334 8164 67872 0 2 0x4000000 syz-executor.6 57899 259073 34410 0 2 0 syz-executor.7 57899 11549 34410 0 3 0x4000080 fsleep syz-executor.7 93571 203903 47767 0 2 0 syz-executor.0 93571 325415 47767 0 3 0x4000080 fsleep syz-executor.0 93571 417362 47767 0 3 0x4000080 fsleep syz-executor.0 95848 303417 90886 0 2 0 syz-executor.1 95848 130948 90886 0 3 0x4000080 fsleep syz-executor.1 72867 167297 29020 0 2 0 syz-executor.3 72867 147165 29020 0 3 0x4000080 kqpoll syz-executor.3 72867 78246 29020 0 3 0x4000080 fsleep syz-executor.3 10525 198763 98154 60928 3 0x90 nanoslp syz-executor.5 10525 380021 98154 60928 3 0x4000090 fsleep syz-executor.5 10525 376920 98154 60928 3 0x4000090 fifor syz-executor.5 67264 396035 31037 0 3 0x80 nanoslp syz-executor.2 *67264 499590 31037 0 7 0x4000001 syz-executor.2 67264 154983 31037 0 3 0x4000080 fsleep syz-executor.2 31037 446282 54309 0 3 0x82 nanoslp syz-executor.2 29020 298874 54309 0 3 0x82 nanoslp syz-executor.3 67872 276573 54309 0 3 0x82 nanoslp syz-executor.6 50501 467560 1 0 3 0x100083 ttyin getty 58497 265374 54309 0 3 0x82 nanoslp syz-executor.4 47767 16148 54309 0 3 0x82 nanoslp syz-executor.0 34410 196488 54309 0 3 0x82 nanoslp syz-executor.7 98154 67668 54309 0 3 0x82 nanoslp syz-executor.5 90886 453900 54309 0 3 0x82 nanoslp syz-executor.1 17422 153033 0 0 3 0x14200 acct acct 53511 4009 0 0 3 0x14200 bored sosplice 54309 115161 63847 0 3 0x82 thrsleep syz-fuzzer 54309 320447 63847 0 2 0x4000002 syz-fuzzer 54309 391105 63847 0 3 0x4000082 kqread syz-fuzzer 54309 498162 63847 0 3 0x4000082 thrsleep syz-fuzzer 54309 116658 63847 0 3 0x4000082 thrsleep syz-fuzzer 54309 516213 63847 0 3 0x4000082 thrsleep syz-fuzzer 54309 163129 63847 0 3 0x4000082 thrsleep syz-fuzzer 54309 521938 63847 0 3 0x4000082 thrsleep syz-fuzzer 63847 299079 49932 0 3 0x10008a sigsusp ksh 49932 324097 55082 0 3 0x9a kqread sshd 55082 89389 1 0 3 0x88 kqread sshd 22133 288818 60554 73 3 0x1100090 kqread syslogd 60554 175295 1 0 3 0x100082 netio syslogd 74934 444501 1 0 3 0x100080 kqread resolvd 4923 159447 96204 77 3 0x100092 kqread dhcpleased 19374 122607 96204 77 3 0x100092 kqread dhcpleased 96204 358740 1 0 3 0x80 kqread dhcpleased 87944 495962 0 0 3 0x14200 bored smr 90 135072 0 0 2 0x14200 zerothread 22847 43666 0 0 3 0x14200 aiodoned aiodoned 13291 111908 0 0 3 0x14200 syncer update 90145 28272 0 0 3 0x14200 cleaner cleaner 27530 115570 0 0 3 0x14200 reaper reaper 39465 289858 0 0 3 0x14200 pgdaemon pagedaemon 71332 2497 0 0 3 0x14200 bored viomb 27670 117073 0 0 3 0x40014200 acpi0 acpi0 82346 248462 0 0 3 0x14200 bored softnet 5972 461576 0 0 3 0x14200 bored systqmp 44690 58439 0 0 3 0x14200 bored systq 39564 194615 0 0 3 0x40014200 bored softclock 74166 195117 0 0 3 0x40014200 idle0 1 82152 0 0 3 0x80082 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 10238 6447K 7920K 78643K 96580 0 pcb 13 20K 25K 78643K 2927 0 rtable 230 21K 24K 78643K 7875 0 ifaddr 98 27K 33K 78643K 2726 0 sysctl 3 1K 1K 78643K 5 0 counters 27 17K 17K 78643K 340 0 ioctlops 0 0K 4K 78643K 4183 0 iov 0 0K 29K 78643K 2241 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1523 95K 95K 78643K 26251 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 148 0 VM map 2 0K 0K 78643K 2 0 sem 12 1K 1K 78643K 2478 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 77K 78643K 20870 0 sigio 0 0K 0K 78643K 303 0 proc 61 55K 87K 78643K 4731 0 subproc 104 6K 6K 78643K 1655 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1017 0 in_multi 79 5K 7K 78643K 2292 0 ether_multi 1 0K 0K 78643K 202 0 mrt 1 0K 0K 78643K 86 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 391 1738K 1738K 78643K 391 0 exec 0 0K 2K 78643K 5830 0 pfkey data 0 0K 1K 78643K 59 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 530 968K 1348K 78643K 248625 0 UVM aobj 131 9K 9K 78643K 135 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1081 0 NDP 13 0K 1K 78643K 669 0 temp 187 4801K 5013K 78643K 208669 0 kqueue 13 20K 32K 78643K 1191 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 2178 0 2175 33 30 3 4 0 8 2 rtentry 112 1789 0 1701 5 2 3 4 0 8 0 unpcb 136 15900 0 15883 139 138 1 10 0 8 0 syncache 296 52 0 52 15 15 0 1 0 8 0 tcpqe 32 36 0 36 11 11 0 1 0 8 0 tcpcb 736 6607 0 6537 231 223 8 17 0 8 1 arp 88 287 0 268 1 0 1 1 0 8 0 ipq 40 29 0 29 14 13 1 1 0 8 1 ipqe 40 67 0 67 14 13 1 1 0 8 1 inpcb 304 23215 0 23207 302 295 7 16 0 8 6 rttmr 72 20 0 20 5 5 0 1 0 8 0 ip6q 72 5 0 5 2 2 0 1 0 8 0 ip6af 40 8 0 8 2 2 0 1 0 8 0 nd6 48 491 0 473 1 0 1 1 0 8 0 pkpcb 40 71 0 71 16 16 0 1 0 8 0 kcovpl 48 127 0 119 1 0 1 1 0 8 0 ppxss 1152 87 0 87 23 23 0 1 0 8 0 pfstscr 40 106 0 106 2 2 0 1 0 8 0 pfosfp 40 36 0 33 2 1 1 1 0 8 0 pfosfpen 112 36 0 27 2 1 1 1 0 8 0 pfrktable 1344 994 0 982 21 20 1 2 0 8 0 pftag 88 40 0 24 1 0 1 1 0 8 0 pfqueue 264 3 0 3 2 2 0 1 0 8 0 pfstitem 24 94 0 94 2 2 0 1 0 8 0 pfstkey 112 214 0 214 2 2 0 1 0 8 0 pfstate 320 107 0 107 2 2 0 1 0 8 0 pfrule 1360 707 0 635 10 3 7 7 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 7378 0 6973 68 39 29 30 0 8 0 art_table 32 7379 0 6973 5 1 4 4 0 8 0 art_node 16 1788 0 1709 1 0 1 1 0 8 0 sysvmsgpl 40 31 0 0 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 2472 0 2462 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 27815 0 26295 96 0 96 96 0 8 0 ffsino 240 27815 0 26295 90 0 90 90 0 8 0 nchpl 144 54413 0 52787 62 0 62 62 0 8 0 uvmvnodes 80 7675 0 0 157 0 157 157 0 8 0 vnodes 224 7675 0 0 452 0 452 452 0 8 0 namei 1024 211411 0 211411 17 16 1 2 0 8 1 vcpupl 1984 70 0 0 9 0 9 9 0 8 0 vmpool 528 228 0 158 7 2 5 5 0 8 0 pfiaddrpl 120 301 0 279 2 1 1 1 0 8 0 scsiplug 72 15 0 15 5 5 0 1 0 8 0 scxspl 216 181049 0 181049 54 53 1 8 0 8 1 plimitpl 152 2896 0 2881 1 0 1 1 0 8 0 sigapl 424 20939 0 20895 8 2 6 8 0 8 0 futexpl 64 205497 0 205490 15 14 1 1 0 8 0 knotepl 120 187864 0 187783 40 36 4 11 0 8 0 kqueuepl 184 4582 0 4573 74 70 4 7 0 8 3 pipepl 304 4760 0 4732 113 105 8 9 0 8 5 fdescpl 432 20892 0 20864 7 3 4 4 0 8 0 filepl 120 153270 0 153022 238 224 14 21 0 8 3 lockfpl 104 5497 0 5494 15 14 1 2 0 8 0 lockfspl 48 1252 0 1249 1 0 1 1 0 8 0 sessionpl 144 153 0 137 1 0 1 1 0 8 0 pgrppl 48 266 0 250 1 0 1 1 0 8 0 ucredpl 96 18005 0 17989 1 0 1 1 0 8 0 zombiepl 144 20896 0 20895 5 4 1 1 0 8 0 processpl 1000 20939 0 20895 9 2 7 8 0 8 0 procpl 672 52235 0 52173 51 44 7 9 0 8 1 sosppl 168 84 0 84 20 20 0 1 0 8 0 sockpl 448 41386 0 41358 862 850 12 41 0 8 8 mcl64k 65536 663 0 663 53 52 1 1 0 8 1 mcl16k 16384 142 0 142 45 45 0 1 0 8 0 mcl12k 12288 592 0 592 52 51 1 1 0 8 1 mcl9k 9216 207 0 207 48 48 0 1 0 8 0 mcl8k 8192 1510 0 1510 43 42 1 1 0 8 1 mcl4k 4096 2383 0 2383 32 31 1 1 0 8 1 mcl2k2 2112 171 0 171 52 52 0 1 0 8 0 mcl2k 2048 117694 0 117603 75 62 13 27 0 8 0 mtagpl 96 21414 0 20166 113 77 36 38 0 8 0 mbufpl 256 378979 0 377428 1680 1567 113 559 0 8 0 bufpl 288 38792 0 31117 549 0 549 549 0 8 0 anonpl 24 5801154 0 5780633 548 417 131 202 0 188 0 amapchunkpl 152 825245 0 824384 2784 2749 35 661 0 158 0 amappl16 200 58946 0 58124 319 272 47 54 0 8 3 amappl15 192 3683 0 3676 1 0 1 1 0 8 0 amappl14 184 3028 0 3025 1 0 1 1 0 8 0 amappl13 176 4915 0 4909 1 0 1 1 0 8 0 amappl12 168 1059 0 1058 5 4 1 1 0 8 0 amappl11 160 2983 0 2970 1 0 1 1 0 8 0 amappl10 152 2023 0 2017 1 0 1 1 0 8 0 amappl9 144 2278 0 2274 1 0 1 1 0 8 0 amappl8 136 6343 0 6244 4 0 4 4 0 8 0 amappl7 128 3964 0 3948 1 0 1 1 0 8 0 amappl6 120 2387 0 2360 2 1 1 2 0 8 0 amappl5 112 14328 0 14313 1 0 1 1 0 8 0 amappl4 104 11292 0 11254 2 0 2 2 0 8 0 amappl3 96 5697 0 5682 1 0 1 1 0 8 0 amappl2 88 7106 0 7052 3 1 2 3 0 8 0 amappl1 80 371307 0 370721 22 9 13 18 0 8 0 amappl 88 245798 0 245471 12 4 8 8 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 72 134 0 4 3 0 3 3 0 8 0 uaddrrnd 24 21120 0 21022 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21120 0 21022 1 0 1 1 0 8 0 vmmpekpl 168 148382 0 148327 3 0 3 3 0 8 0 vmmpepl 168 1940108 0 1937158 433 295 138 156 0 357 0 vmsppl 272 21119 0 21022 9 2 7 7 0 8 0 rwobjpl 24 450299 0 440596 65 6 59 60 0 8 0 pdppl 4096 42246 0 42114 1469 1335 134 134 0 8 2 pvpl 32 9951500 0 9927342 873 668 205 340 0 265 0 pmappl 216 21119 0 21022 8 2 6 6 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 5336 0 4269 59 28 31 42 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sblock(fffffd807ac8dc70,fffffd807ac8dd88,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd807ac8dc70,fffffd807ac8dd88,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd807ac8dc70,0,ffff80002e7cadc0,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff80002e7cad10) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd8074788498,ffff80002e7cadc0,3,fffffd807f7d8a20) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800024ac6010,fffffd8074788498,fffffd807f7d8a20,ffff80002e7cae88,ffff80002e7cae60) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff800024ac6010,5,1,ffff8000006c38f0,ff52) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff800024ac6010,5,1,ffff8000006c38f0,ff52) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilewritev(ffff800024ac6010,5,ffff80002e7cb080,0,ffff80002e7cb180) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_writev(ffff800024ac6010,ffff80002e7cb128,ffff80002e7cb180) at sys_writev+0xa7 sys/kern/sys_generic.c:328 syscall(ffff80002e7cb1f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf4b9c2e230, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace sblock(fffffd807ac8dc70,fffffd807ac8dd88,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd807ac8dc70,fffffd807ac8dd88,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd807ac8dc70,0,ffff80002e7cadc0,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff80002e7cad10) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd8074788498,ffff80002e7cadc0,3,fffffd807f7d8a20) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800024ac6010,fffffd8074788498,fffffd807f7d8a20,ffff80002e7cae88,ffff80002e7cae60) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrgenio(ffff800024ac6010,5,1,ffff8000006c38f0,ff52) at ktrgenio+0x27b ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff800024ac6010,5,1,ffff8000006c38f0,ff52) at ktrgenio+0x27b sys/kern/kern_ktrace.c:265 dofilewritev(ffff800024ac6010,5,ffff80002e7cb080,0,ffff80002e7cb180) at dofilewritev+0x38a sys/kern/sys_generic.c:402 sys_writev(ffff800024ac6010,ffff80002e7cb128,ffff80002e7cb180) at sys_writev+0xa7 sys/kern/sys_generic.c:328 syscall(ffff80002e7cb1f0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf4b9c2e230, count: -10