uvm_fault(0xfffffd807c771b90, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at socreate+0x84: cmpq $0,0(%rax) TID PID UID PRFLAGS PFLAGS CPU COMMAND 480619 57321 0 0 0 0 syz-executor.6 *328366 57321 0 0 0x4000000 1K syz-executor.6 socreate(18,ffff800021248a78,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socket(ffff8000274f97b0,ffff800021248b08,ffff800021248b60) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff800021248bd0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021248bd0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x87e9c5b7280, count: 11 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd807c771b90, 0x0, 0, 1) -> e ddb{1}> trace socreate(18,ffff800021248a78,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socket(ffff8000274f97b0,ffff800021248b08,ffff800021248b60) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff800021248bd0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021248bd0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x87e9c5b7280, count: -4 ddb{1}> show registers rdi 0xffff80002db43000 rsi 0x17 rbp 0xffff800021248a60 rbx 0x18 rdx 0xffff80002db43000 rcx 0x16 rax 0 r8 0xffffffff811cfb80 uvm_map_inentry_pc r9 0x1c r10 0 r11 0x3898f28a75159644 r12 0xffff800021248a78 r13 0xffffffff82675e40 inet6sw r14 0 r15 0x29 rip 0xffffffff81b8f4e4 socreate+0x84 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff800021248a00 ss 0x10 socreate+0x84: cmpq $0,0(%rax) ddb{1}> show proc PROC (syz-executor.6) pid=328366 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff8000274f82b0,0xffff8000274f9280 process=0xffff800027f0cc98 user=0xffff800021243000, vmspace=0xfffffd807c771b90 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26168 479203 81531 0 2 0 syz-executor.2 74493 54530 65354 0 2 0 syz-executor.7 71709 390493 28149 0 2 0 syz-executor.0 25985 132624 75224 0 2 0 syz-executor.5 25985 48588 75224 0 3 0x4000080 fsleep syz-executor.5 35639 472599 12331 0 2 0 syz-executor.1 35639 312970 12331 0 3 0x4000080 fsleep syz-executor.1 35639 364928 12331 0 3 0x4000080 fsleep syz-executor.1 35639 262712 12331 0 3 0x4000080 fsleep syz-executor.1 68203 268939 58354 0 3 0x80 nanoslp syz-executor.3 68203 499074 58354 0 2 0x4000000 syz-executor.3 57321 480619 82145 0 7 0 syz-executor.6 *57321 328366 82145 0 7 0x4000000 syz-executor.6 57321 467754 82145 0 3 0x4000080 fsleep syz-executor.6 30736 253852 25364 0 3 0x80 nanoslp syz-executor.4 30736 125173 25364 0 3 0x4000080 fsleep syz-executor.4 12331 52756 9616 0 3 0x82 nanoslp syz-executor.1 81531 256454 9616 0 3 0x82 nanoslp syz-executor.2 25364 412562 9616 0 3 0x82 nanoslp syz-executor.4 82145 299245 9616 0 3 0x82 nanoslp syz-executor.6 58354 71396 9616 0 2 0x2 syz-executor.3 88181 87225 0 0 3 0x14200 acct acct 28149 166907 9616 0 3 0x82 nanoslp syz-executor.0 65354 454548 9616 0 3 0x82 nanoslp syz-executor.7 69732 523995 0 0 3 0x14280 nfsidl nfsio 67282 38954 0 0 3 0x14280 nfsidl nfsio 7517 332173 0 0 3 0x14280 nfsidl nfsio 89149 427603 0 0 3 0x14280 nfsidl nfsio 74699 340231 0 0 3 0x14280 nfsidl nfsio 78659 283293 0 0 3 0x14280 nfsidl nfsio 40280 423526 0 0 3 0x14280 nfsidl nfsio 29417 282510 0 0 3 0x14280 nfsidl nfsio 26229 372537 0 0 3 0x14280 nfsidl nfsio 73958 226161 0 0 3 0x14280 nfsidl nfsio 93046 382974 0 0 3 0x14280 nfsidl nfsio 26905 376963 0 0 3 0x14280 nfsidl nfsio 64381 160137 0 0 3 0x14280 nfsidl nfsio 60677 179901 0 0 3 0x14280 nfsidl nfsio 44590 317183 0 0 3 0x14280 nfsidl nfsio 8751 353171 0 0 3 0x14280 nfsidl nfsio 97567 433513 0 0 3 0x14280 nfsidl nfsio 3105 228353 0 0 3 0x14280 nfsidl nfsio 39784 54472 0 0 3 0x14280 nfsidl nfsio 69748 386996 0 0 3 0x14280 nfsidl nfsio 57538 515161 0 0 3 0x14200 bored sosplice 75224 33785 9616 0 3 0x82 nanoslp syz-executor.5 9616 215792 19913 0 3 0x82 thrsleep syz-fuzzer 9616 319758 19913 0 3 0x4000082 nanoslp syz-fuzzer 9616 4897 19913 0 3 0x4000082 nanoslp syz-fuzzer 9616 68459 19913 0 3 0x4000082 kqread syz-fuzzer 9616 129199 19913 0 3 0x4000082 thrsleep syz-fuzzer 9616 451033 19913 0 3 0x4000082 thrsleep syz-fuzzer 9616 235547 19913 0 3 0x4000082 thrsleep syz-fuzzer 9616 283350 19913 0 3 0x4000082 thrsleep syz-fuzzer 9616 150286 19913 0 3 0x4000082 thrsleep syz-fuzzer 9616 352830 19913 0 3 0x4000082 thrsleep syz-fuzzer 19913 356521 28431 0 3 0x10008a sigsusp ksh 28431 482056 61873 0 3 0x9a kqread sshd 29236 509143 1 0 3 0x100083 ttyin getty 61873 159989 1 0 3 0x88 kqread sshd 61667 304489 79626 74 3 0x1100092 bpf pflogd 79626 7483 1 0 3 0x80 netio pflogd 87509 8485 48680 73 3 0x1100090 kqread syslogd 48680 41309 1 0 3 0x100082 netio syslogd 85790 257772 1 0 3 0x100080 kqread resolvd 88753 196318 95097 77 3 0x100092 kqread dhcpleased 56813 55555 95097 77 3 0x100092 kqread dhcpleased 95097 18413 1 0 3 0x80 kqread dhcpleased 82355 325506 0 0 3 0x14200 bored smr 68352 57059 0 0 2 0x14200 zerothread 61939 412087 0 0 3 0x14200 aiodoned aiodoned 69783 197217 0 0 3 0x14200 syncer update 35243 375100 0 0 3 0x14200 cleaner cleaner 77621 251751 0 0 3 0x14200 reaper reaper 32213 227666 0 0 3 0x14200 pgdaemon pagedaemon 88019 99508 0 0 3 0x14200 bored viomb 1652 338241 0 0 3 0x40014200 acpi0 acpi0 84169 458222 0 0 3 0x40014200 idle1 55988 175822 0 0 3 0x14200 bored softnet 75860 38603 0 0 3 0x14200 bored systqmp 74487 325595 0 0 3 0x14200 bored systq 67287 111305 0 0 3 0x40014200 bored softclock 19444 480481 0 0 3 0x40014200 idle0 1 477566 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 57321 (syz-executor.6) thread 0xffff8000274f97b0 (328366) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b6e770) #0 witness_lock+0x44d #1 kpageflttrap+0x23d sys/arch/amd64/amd64/trap.c:274 #2 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 #3 alltraps_kern_meltdown+0x7b #4 socreate+0x84 sys/kern/uipc_socket.c:172 #5 sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 #6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10208 6499K 8275K 78643K 17668 0 pcb 14 14K 16K 78643K 1214 0 rtable 235 19K 20K 78643K 1312 0 ifaddr 94 20K 21K 78643K 490 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 36K 78643K 160 0 ioctlops 0 0K 8K 78643K 2149 0 iov 0 0K 16K 78643K 339 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1467 92K 92K 78643K 3738 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 55 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 976 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 18 65K 85K 78643K 5617 0 sigio 0 0K 0K 78643K 161 0 proc 70 87K 124K 78643K 1039 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 154 0 in_multi 88 5K 6K 78643K 700 0 ether_multi 1 0K 0K 78643K 38 0 mrt 1 0K 0K 78643K 20 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 163 731K 731K 78643K 163 0 exec 0 0K 2K 78643K 1288 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 424 314K 314K 78643K 72967 0 UVM aobj 131 8K 8K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 222 0 NDP 13 0K 2K 78643K 200 0 temp 148 4731K 4803K 78643K 35979 0 kqueue 12 18K 26K 78643K 338 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 415 0 412 5 4 1 3 0 8 0 rtentry 112 384 0 288 4 0 4 4 0 8 0 unpcb 136 2809 0 2794 42 41 1 9 0 8 0 syncache 296 24 0 24 8 8 0 1 0 8 0 tcpqe 32 150 0 150 5 5 0 1 0 8 0 tcpcb 736 2058 0 2051 58 54 4 13 0 8 2 arp 120 50 0 33 1 0 1 1 0 8 0 inpcb 304 5860 0 5850 66 63 3 11 0 8 1 rttmr 72 3 0 3 1 1 0 1 0 8 0 nd6 48 158 0 137 1 0 1 1 0 8 0 pkpcb 40 20 0 20 3 3 0 1 0 8 0 kcovpl 48 21 0 13 1 0 1 1 0 8 0 ppxss 1248 17 0 17 3 3 0 1 0 8 0 pffrag 232 12 0 10 2 1 1 1 0 482 0 pffrnode 88 12 0 10 2 1 1 1 0 8 0 pffrent 40 32 0 30 2 1 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 34 0 25 1 0 1 1 0 8 0 pfpktdelay 88 38 0 38 3 3 0 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfqueue 264 4 0 4 1 1 0 1 0 8 0 pfstitem 24 43 0 40 1 0 1 1 0 8 0 pfstkey 112 43 0 40 1 0 1 1 0 8 0 pfstate 320 43 0 40 2 1 1 2 0 8 0 pfsrctr 152 9 0 9 1 1 0 1 0 8 0 pfrule 1360 48 0 33 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1192 0 773 36 9 27 29 0 8 0 art_table 32 1193 0 773 4 0 4 4 0 8 0 art_node 16 378 0 295 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 6 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 972 0 962 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9082 0 7642 91 0 91 91 0 8 0 ffsino 272 9082 0 7642 97 0 97 97 0 8 0 nchpl 144 16446 0 14822 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 58571 0 58571 4 3 1 2 0 8 1 percpumem 16 92 0 52 1 0 1 1 0 8 0 vcpupl 2048 50 0 0 7 0 7 7 0 8 0 vmpool 560 59 0 9 6 2 4 4 0 8 0 pfiaddrpl 120 14 0 4 1 0 1 1 0 8 0 scxspl 216 48843 0 48843 16 15 1 8 0 8 1 plimitpl 152 936 0 921 1 0 1 1 0 8 0 sigapl 424 5915 0 5848 9 1 8 8 0 8 0 futexpl 64 48196 0 48190 2 1 1 1 0 8 0 knotepl 120 242 0 0 6 0 6 6 0 8 0 kqueuepl 216 1048 0 1040 25 24 1 5 0 8 0 pipepl 336 1105 0 1077 32 29 3 11 0 8 0 fdescpl 496 5878 0 5847 6 2 4 5 0 8 0 filepl 152 40221 0 39980 81 70 11 20 0 8 1 lockfpl 104 1225 0 1223 4 3 1 2 0 8 0 lockfspl 48 385 0 383 1 0 1 1 0 8 0 sessionpl 144 37 0 20 1 0 1 1 0 8 0 pgrppl 48 58 0 41 1 0 1 1 0 8 0 ucredpl 96 3988 0 3973 1 0 1 1 0 8 0 zombiepl 144 5848 0 5848 1 0 1 1 0 8 1 processpl 1064 5915 0 5848 5 0 5 5 0 8 0 procpl 672 16437 0 16353 15 7 8 9 0 8 0 srpgc 96 25 0 25 6 6 0 1 0 8 0 sosppl 168 43 0 43 6 6 0 1 0 8 0 sockpl 480 9143 0 9115 183 174 9 34 0 8 5 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 20 0 0 3 1 2 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 37 0 0 4 1 3 3 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 329 0 0 26 1 25 26 0 8 0 mtagpl 96 269 0 0 4 0 4 4 0 8 0 mbufpl 256 3479 0 0 210 0 210 210 0 8 0 bufpl 288 11283 0 4948 453 0 453 453 0 8 0 anonpl 24 1634945 0 1615450 186 57 129 153 0 186 0 amapchunkpl 152 175926 0 175030 72 32 40 49 0 158 1 amappl16 200 14438 0 13833 83 45 38 45 0 8 0 amappl15 192 1748 0 1741 1 0 1 1 0 8 0 amappl14 184 684 0 680 2 1 1 1 0 8 0 amappl13 176 1122 0 1119 1 0 1 1 0 8 0 amappl12 168 208 0 204 1 0 1 1 0 8 0 amappl11 160 1715 0 1695 1 0 1 1 0 8 0 amappl10 152 841 0 829 1 0 1 1 0 8 0 amappl9 144 622 0 620 1 0 1 1 0 8 0 amappl8 136 996 0 895 5 1 4 4 0 8 0 amappl7 128 184 0 174 1 0 1 1 0 8 0 amappl6 120 396 0 373 2 1 1 2 0 8 0 amappl5 112 4986 0 4962 1 0 1 1 0 8 0 amappl4 104 4150 0 4109 3 1 2 2 0 8 0 amappl3 96 672 0 656 1 0 1 1 0 8 0 amappl2 88 2045 0 1993 3 1 2 3 0 8 0 amappl1 80 108908 0 108306 20 5 15 19 0 8 0 amappl 88 72151 0 71859 8 0 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 5937 0 5856 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5937 0 5856 1 0 1 1 0 8 0 vmmpekpl 168 48026 0 47961 4 0 4 4 0 8 0 vmmpepl 168 533337 0 530523 254 101 153 153 0 357 27 vmsppl 368 5936 0 5856 10 2 8 8 0 8 0 rwobjpl 56 135050 0 127317 117 6 111 112 0 8 0 pdppl 4096 11881 0 11762 409 290 119 119 0 8 0 pvpl 32 2961211 0 2936794 373 164 209 273 0 265 2 pmappl 248 5936 0 5856 5 0 5 5 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1456 0 394 31 0 31 31 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82999ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82b6e568) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b6e568) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7fffff4570, count: 9 ddb{0}> trace x86_ipi_db(ffffffff82999ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82b6e568) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b6e568) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7fffff4570, count: -6 ddb{0}> machine ddbcpu 1 Stopped at socreate+0x84: cmpq $0,0(%rax) socreate(18,ffff800021248a78,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socket(ffff8000274f97b0,ffff800021248b08,ffff800021248b60) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff800021248bd0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021248bd0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x87e9c5b7280, count: 11 ddb{1}> trace socreate(18,ffff800021248a78,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socket(ffff8000274f97b0,ffff800021248b08,ffff800021248b60) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff800021248bd0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021248bd0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x87e9c5b7280, count: -4