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(fffffd8062cb33b0,fffffd8062cb3448,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8062cb33b0,fffffd8062cb3448,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 soreceive(fffffd8062cb33b0,0,ffff8000249caba8,0,0,ffff8000249caabc,f2f6acf5fa5e0ed) at soreceive+0x203 sys/kern/uipc_socket.c:766 fifo_read(ffff8000249cab10) at fifo_read+0xcb sys/miscfs/fifofs/fifo_vnops.c:253 VOP_READ(fffffd80605c7e10,ffff8000249caba8,64,fffffd807f7d77e0) at VOP_READ+0xbf sys/kern/vfs_vops.c:227 vn_rdwr(0,fffffd80605c7e10,ffff8000089431c0,f9,0,1,bfe7024da1ddb896,ffff8000006b4000,fffffd807c3a24c0,0) at vn_rdwr+0x105 vndstrategy(fffffd807c3a24c0) at vndstrategy+0x3b3 sys/dev/vnd.c:342 physio(ffffffff810dbcd0,2902,8000,ffffffff81622690,ffff8000249cb090) at physio+0x289 sys/kern/kern_physio.c:163 spec_read(ffff8000249cae70) at spec_read+0xec sys/kern/spec_vnops.c:222 VOP_READ(fffffd806ede7920,ffff8000249cb090,0,fffffd807f7d7960) at VOP_READ+0xbf sys/kern/vfs_vops.c:227 vn_read(fffffd806c710bc8,ffff8000249cb090,0) at vn_read+0x121 sys/kern/vfs_vnops.c:375 dofilereadv(ffff8000216afce8,6,ffff8000249cb090,0,ffff8000249cb190) at dofilereadv+0x19e sys/kern/sys_generic.c:253 sys_readv(ffff8000216afce8,ffff8000249cb138,ffff8000249cb190) at sys_readv+0xa7 sys/kern/sys_generic.c:200 syscall(ffff8000249cb200) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaf13a669f00, count: -14 ddb> show registers rdi 0 rsi 0x40 rbp 0xffff8000249ca990 rbx 0x1 rdx 0xffff800000bcee40 rcx 0x2753 __ALIGN_SIZE+0x1753 rax 0x1beb68db6b69e867 r8 0 r9 0 r10 0x7e900 acpi_pdirpa+0x6a768 r11 0x33d9ed279f52722a r12 0 r13 0x1 r14 0xfffffd8062cb3498 r15 0xfffffd8062cb33b0 rip 0xffffffff812f44ea sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000249ca930 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb> show proc PROC (syz-executor.3) pid=503631 stat=onproc flags process=0 proc=4000000 pri=24, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff8000216ac008,0xffff800021606560 process=0xffff800021670420 user=0xffff8000249c6000, vmspace=0xfffffd807bbb4770 estcpu=25, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 61959 357438 37350 0 2 0 syz-executor.1 61959 354409 37350 0 3 0x4000080 fsleep syz-executor.1 61959 331258 37350 0 3 0x4000080 fsleep syz-executor.1 4971 166741 93060 0 2 0 syz-executor.2 68569 53462 55022 0 2 0 syz-executor.0 68569 210209 55022 0 3 0x4000080 fsleep syz-executor.0 68569 133953 55022 0 3 0x4000080 fsleep syz-executor.0 89186 511175 90136 0 2 0 syz-executor.6 89186 24142 90136 0 2 0x4000000 syz-executor.6 89186 256479 90136 0 2 0x4000080 syz-executor.6 89186 503322 90136 0 3 0x4000080 fsleep syz-executor.6 3080 79892 41517 0 3 0x80 nanoslp syz-executor.3 * 3080 503631 41517 0 7 0x4000000 syz-executor.3 12083 479533 1 0 3 0x100083 ttyin getty 50503 48204 16035 0 3 0x82 piperd syz-executor.4 90136 244603 16035 0 3 0x82 nanoslp syz-executor.6 37350 202485 16035 0 3 0x82 nanoslp syz-executor.1 41517 289821 16035 0 3 0x82 nanoslp syz-executor.3 45916 271627 16035 0 2 0x2 syz-executor.7 70420 372808 16035 0 3 0x82 piperd syz-executor.5 83288 419701 0 0 3 0x14280 nfsidl nfsio 65908 378635 0 0 3 0x14280 nfsidl nfsio 26789 361111 0 0 3 0x14280 nfsidl nfsio 38997 107460 0 0 3 0x14280 nfsidl nfsio 32280 27648 0 0 3 0x14280 nfsidl nfsio 98101 377231 0 0 3 0x14280 nfsidl nfsio 64712 173993 0 0 3 0x14280 nfsidl nfsio 93136 29871 0 0 3 0x14280 nfsidl nfsio 34460 384317 0 0 3 0x14280 nfsidl nfsio 91338 489440 0 0 3 0x14280 nfsidl nfsio 82524 252510 0 0 3 0x14280 nfsidl nfsio 1460 139481 0 0 3 0x14280 nfsidl nfsio 20930 286096 0 0 3 0x14280 nfsidl nfsio 52520 46066 0 0 3 0x14280 nfsidl nfsio 17692 493907 0 0 3 0x14280 nfsidl nfsio 65934 280049 0 0 3 0x14280 nfsidl nfsio 85096 481798 0 0 3 0x14280 nfsidl nfsio 62562 25996 0 0 3 0x14280 nfsidl nfsio 91354 259282 0 0 3 0x14280 nfsidl nfsio 37129 241664 0 0 3 0x14280 nfsidl nfsio 98946 104358 0 0 3 0x14200 bored sosplice 93060 103349 16035 0 3 0x82 nanoslp syz-executor.2 55022 16285 16035 0 3 0x82 nanoslp syz-executor.0 16035 66148 64861 0 3 0x82 kqread syz-fuzzer 16035 218213 64861 0 3 0x4000082 thrsleep syz-fuzzer 16035 261298 64861 0 3 0x4000082 thrsleep syz-fuzzer 16035 223635 64861 0 3 0x4000082 thrsleep syz-fuzzer 16035 345768 64861 0 3 0x4000082 thrsleep syz-fuzzer 16035 382804 64861 0 3 0x4000082 thrsleep syz-fuzzer 16035 515522 64861 0 3 0x4000082 thrsleep syz-fuzzer 16035 520656 64861 0 3 0x4000082 thrsleep syz-fuzzer 64861 194208 79520 0 3 0x10008a sigsusp ksh 79520 384769 11370 0 3 0x9a kqread sshd 11370 518803 1 0 3 0x88 kqread sshd 52796 139949 8781 73 3 0x1100090 kqread syslogd 8781 228416 1 0 3 0x100082 netio syslogd 94817 189411 1 0 3 0x100080 kqread resolvd 12905 208995 44768 77 3 0x100092 kqread dhcpleased 80344 483222 44768 77 3 0x100092 kqread dhcpleased 44768 225251 1 0 3 0x80 kqread dhcpleased 59653 481641 0 0 3 0x14200 bored smr 1637 174183 0 0 2 0x14200 zerothread 9103 178224 0 0 3 0x14200 aiodoned aiodoned 15649 34836 0 0 3 0x14200 syncer update 49817 271443 0 0 3 0x14200 cleaner cleaner 17202 170481 0 0 3 0x14200 reaper reaper 68563 336826 0 0 3 0x14200 pgdaemon pagedaemon 25410 24536 0 0 3 0x14200 bored viomb 41054 172924 0 0 3 0x40014200 acpi0 acpi0 91424 141402 0 0 3 0x14200 bored softnet 15877 478935 0 0 3 0x14200 bored systqmp 16605 28194 0 0 3 0x14200 bored systq 19140 98784 0 0 3 0x40014200 bored softclock 24322 191518 0 0 3 0x40014200 idle0 1 269092 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 6462K 6980K 78643K 24322 0 pcb 13 18K 20K 78643K 909 0 rtable 244 8K 10K 78643K 3853 0 ifaddr 89 20K 262K 78643K 2758 0 sysctl 2 0K 2K 78643K 6 0 counters 27 17K 17K 78643K 131 0 ioctlops 0 0K 4K 78643K 12205 0 iov 0 0K 24K 78643K 1243 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1422 89K 89K 78643K 5458 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 83 0 VM map 2 0K 0K 78643K 2 0 sem 12 1K 1K 78643K 12 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 77K 78643K 10531 0 sigio 0 0K 0K 78643K 45 0 proc 75 60K 75K 78643K 1107 0 subproc 104 6K 6K 78643K 273 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 470 0 in_multi 99 6K 7K 78643K 469 0 ether_multi 1 0K 0K 78643K 91 0 mrt 3 0K 0K 78643K 36 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 175 784K 784K 78643K 175 0 exec 0 0K 2K 78643K 1972 0 pfkey data 0 0K 0K 78643K 3 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 413 550K 1126K 78643K 56617 0 UVM aobj 131 5K 5K 78643K 152 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 339 0 NDP 12 0K 2K 78643K 167 0 temp 156 4778K 4892K 78643K 54876 0 kqueue 12 18K 24K 78643K 1142 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 120 549 0 546 8 7 1 3 0 8 0 rtentry 112 871 0 761 4 0 4 4 0 8 0 unpcb 136 21586 0 21573 70 61 9 9 0 8 8 syncache 296 32 0 32 8 8 0 1 0 8 0 tcpqe 32 643 0 643 7 7 0 2 0 8 0 tcpcb 736 3157 0 3153 103 101 2 14 0 8 1 arp 88 50 0 34 1 0 1 1 0 8 0 ipq 40 10 0 10 4 4 0 1 0 8 0 ipqe 40 29 0 29 4 4 0 1 0 8 0 inpcb 312 7889 0 7882 98 97 1 11 0 8 0 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 48 85 0 56 1 0 1 1 0 8 0 pkpcb 40 7 0 7 2 2 0 1 0 8 0 kcovpl 48 21 0 13 1 0 1 1 0 8 0 ppxss 1152 51 0 51 5 5 0 1 0 8 0 pfstscr 40 5654 0 5653 12 11 1 12 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 744 0 743 9 8 1 1 0 8 0 pftag 88 25 0 13 1 0 1 1 0 8 0 pfqueue 264 1 0 1 1 1 0 1 0 8 0 pfstitem 24 2320 0 2316 8 7 1 8 0 8 0 pfstkey 112 6671 0 6667 1 0 1 1 0 8 0 pfstate 336 3341 0 3339 53 51 2 53 0 8 1 pfrule 1360 1564 0 1435 35 23 12 20 0 8 0 rttmrq 48 31 0 27 1 0 1 1 0 8 0 rttmr 72 9 0 9 3 3 0 1 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 1530 0 1043 37 6 31 32 0 8 0 art_table 32 1532 0 1044 6 1 5 5 0 8 0 art_node 16 640 0 541 1 0 1 1 0 8 0 sysvmsgpl 40 44 0 4 1 0 1 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 149 0 21 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 14687 0 13223 92 0 92 92 0 8 0 ffsino 240 14687 0 13223 87 0 87 87 0 8 0 nchpl 144 27819 0 26188 63 0 63 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 104469 0 104469 3 2 1 2 0 8 1 vcpupl 1984 196 0 0 25 0 25 25 0 8 0 vmpool 528 203 0 7 14 0 14 14 0 8 0 pfiaddrpl 120 253 0 253 8 8 0 1 0 8 0 kstatmem 264 232 0 208 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 79667 0 79667 24 23 1 8 0 8 1 plimitpl 152 878 0 863 1 0 1 1 0 8 0 sigapl 424 10837 0 10777 8 0 8 8 0 8 0 futexpl 64 115779 0 115774 1 0 1 1 0 8 0 knotepl 120 95623 0 95543 22 16 6 8 0 8 2 kqueuepl 184 3854 0 3846 36 35 1 4 0 8 0 pipepl 304 5395 0 5365 73 65 8 10 0 8 5 fdescpl 432 10780 0 10754 4 0 4 4 0 8 0 filepl 120 96844 0 96601 88 73 15 17 0 8 7 lockfpl 104 1689 0 1686 4 3 1 2 0 8 0 lockfspl 48 621 0 618 1 0 1 1 0 8 0 sessionpl 144 37 0 21 1 0 1 1 0 8 0 pgrppl 48 79 0 63 1 0 1 1 0 8 0 ucredpl 96 10588 0 10577 1 0 1 1 0 8 0 zombiepl 144 10777 0 10777 2 1 1 1 0 8 1 processpl 1000 10837 0 10777 11 3 8 9 0 8 0 procpl 672 25917 0 25842 27 20 7 8 0 8 0 sosppl 168 35 0 35 7 7 0 1 0 8 0 sockpl 448 30037 0 30011 489 459 30 34 0 8 26 mcl64k 65536 426 0 426 17 16 1 1 0 8 1 mcl16k 16384 160 0 160 21 20 1 1 0 8 1 mcl12k 12288 305 0 305 20 19 1 1 0 8 1 mcl9k 9216 200 0 200 15 15 0 1 0 8 0 mcl8k 8192 589 0 589 16 15 1 1 0 8 1 mcl4k 4096 1218 0 1218 8 7 1 1 0 8 1 mcl2k2 2112 113 0 113 20 20 0 1 0 8 0 mcl2k 2048 97815 0 97747 56 45 11 30 0 8 0 mtagpl 96 1897 0 1428 15 3 12 12 0 8 0 mbufpl 256 235973 0 235220 881 830 51 445 0 8 0 bufpl 288 20168 0 13765 458 0 458 458 0 8 0 anonpl 24 2071388 0 2052068 230 106 124 155 0 188 0 amapchunkpl 152 250668 0 249931 1561 1216 345 674 0 158 313 amappl16 200 36842 0 36166 113 76 37 58 0 8 0 amappl15 192 1460 0 1456 1 0 1 1 0 8 0 amappl14 184 1433 0 1427 1 0 1 1 0 8 0 amappl13 176 261 0 260 1 0 1 1 0 8 0 amappl12 168 1840 0 1835 2 1 1 1 0 8 0 amappl11 160 2230 0 2211 1 0 1 1 0 8 0 amappl10 152 2829 0 2818 1 0 1 1 0 8 0 amappl9 144 724 0 718 1 0 1 1 0 8 0 amappl8 136 2346 0 2218 5 0 5 5 0 8 0 amappl7 128 1415 0 1404 1 0 1 1 0 8 0 amappl6 120 542 0 519 2 1 1 2 0 8 0 amappl5 112 9769 0 9751 1 0 1 1 0 8 0 amappl4 104 5737 0 5694 2 0 2 2 0 8 0 amappl3 96 31699 0 31654 2 0 2 2 0 8 0 amappl2 88 12564 0 12498 3 1 2 3 0 8 0 amappl1 80 252323 0 251705 25 10 15 19 0 8 0 amappl 88 55643 0 55443 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 72 151 0 21 3 0 3 3 0 8 0 uaddrrnd 24 10983 0 10761 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10983 0 10761 2 0 2 2 0 8 0 vmmpekpl 168 82711 0 82643 4 0 4 4 0 8 0 vmmpepl 168 1036725 0 1033614 277 122 155 166 0 357 6 vmsppl 272 10982 0 10761 17 2 15 16 0 8 0 rwobjpl 24 254906 0 247089 50 1 49 49 0 8 0 pdppl 4096 21972 0 21718 607 347 260 262 0 8 6 pvpl 32 3929512 0 3907629 357 166 191 244 0 265 0 pmappl 216 10982 0 10761 13 0 13 13 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 3086 0 2024 52 16 36 42 0 8 1 ddb> machine ddbcpu 0 No such command ddb> trace sblock(fffffd8062cb33b0,fffffd8062cb3448,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8062cb33b0,fffffd8062cb3448,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 soreceive(fffffd8062cb33b0,0,ffff8000249caba8,0,0,ffff8000249caabc,f2f6acf5fa5e0ed) at soreceive+0x203 sys/kern/uipc_socket.c:766 fifo_read(ffff8000249cab10) at fifo_read+0xcb sys/miscfs/fifofs/fifo_vnops.c:253 VOP_READ(fffffd80605c7e10,ffff8000249caba8,64,fffffd807f7d77e0) at VOP_READ+0xbf sys/kern/vfs_vops.c:227 vn_rdwr(0,fffffd80605c7e10,ffff8000089431c0,f9,0,1,bfe7024da1ddb896,ffff8000006b4000,fffffd807c3a24c0,0) at vn_rdwr+0x105 vndstrategy(fffffd807c3a24c0) at vndstrategy+0x3b3 sys/dev/vnd.c:342 physio(ffffffff810dbcd0,2902,8000,ffffffff81622690,ffff8000249cb090) at physio+0x289 sys/kern/kern_physio.c:163 spec_read(ffff8000249cae70) at spec_read+0xec sys/kern/spec_vnops.c:222 VOP_READ(fffffd806ede7920,ffff8000249cb090,0,fffffd807f7d7960) at VOP_READ+0xbf sys/kern/vfs_vops.c:227 vn_read(fffffd806c710bc8,ffff8000249cb090,0) at vn_read+0x121 sys/kern/vfs_vnops.c:375 dofilereadv(ffff8000216afce8,6,ffff8000249cb090,0,ffff8000249cb190) at dofilereadv+0x19e sys/kern/sys_generic.c:253 sys_readv(ffff8000216afce8,ffff8000249cb138,ffff8000249cb190) at sys_readv+0xa7 sys/kern/sys_generic.c:200 syscall(ffff8000249cb200) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaf13a669f00, count: -14 ddb> machine ddbcpu 1 No such command ddb> trace sblock(fffffd8062cb33b0,fffffd8062cb3448,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8062cb33b0,fffffd8062cb3448,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 soreceive(fffffd8062cb33b0,0,ffff8000249caba8,0,0,ffff8000249caabc,f2f6acf5fa5e0ed) at soreceive+0x203 sys/kern/uipc_socket.c:766 fifo_read(ffff8000249cab10) at fifo_read+0xcb sys/miscfs/fifofs/fifo_vnops.c:253 VOP_READ(fffffd80605c7e10,ffff8000249caba8,64,fffffd807f7d77e0) at VOP_READ+0xbf sys/kern/vfs_vops.c:227 vn_rdwr(0,fffffd80605c7e10,ffff8000089431c0,f9,0,1,bfe7024da1ddb896,ffff8000006b4000,fffffd807c3a24c0,0) at vn_rdwr+0x105 vndstrategy(fffffd807c3a24c0) at vndstrategy+0x3b3 sys/dev/vnd.c:342 physio(ffffffff810dbcd0,2902,8000,ffffffff81622690,ffff8000249cb090) at physio+0x289 sys/kern/kern_physio.c:163 spec_read(ffff8000249cae70) at spec_read+0xec sys/kern/spec_vnops.c:222 VOP_READ(fffffd806ede7920,ffff8000249cb090,0,fffffd807f7d7960) at VOP_READ+0xbf sys/kern/vfs_vops.c:227 vn_read(fffffd806c710bc8,ffff8000249cb090,0) at vn_read+0x121 sys/kern/vfs_vnops.c:375 dofilereadv(ffff8000216afce8,6,ffff8000249cb090,0,ffff8000249cb190) at dofilereadv+0x19e sys/kern/sys_generic.c:253 sys_readv(ffff8000216afce8,ffff8000249cb138,ffff8000249cb190) at sys_readv+0xa7 sys/kern/sys_generic.c:200 syscall(ffff8000249cb200) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaf13a669f00, count: -14