login: uvm_fault(0xfffffd807828fe78, 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 *485752 46431 32767 0x10 0x4000000 1K syz-executor.0 487520 78002 0 0x14000 0x200 0 reaper socreate(18,ffff80002e373bb0,3,3c) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socketpair(ffff800024cb2d30,ffff80002e373c48,ffff80002e373ca0) at sys_socketpair+0x6e sys/kern/uipc_syscalls.c:430 syscall(ffff80002e373d10) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e373d10) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4ac59677480, 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(0xfffffd807828fe78, 0x0, 0, 1) -> e ddb{1}> trace socreate(18,ffff80002e373bb0,3,3c) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socketpair(ffff800024cb2d30,ffff80002e373c48,ffff80002e373ca0) at sys_socketpair+0x6e sys/kern/uipc_syscalls.c:430 syscall(ffff80002e373d10) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e373d10) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4ac59677480, count: -4 ddb{1}> show registers rdi 0xffff80002123e000 rsi 0x1c6a __ALIGN_SIZE+0xc6a rbp 0xffff80002e373b90 rbx 0x18 rdx 0xffff80002123e000 rcx 0x1c69 __ALIGN_SIZE+0xc69 rax 0 r8 0xffffffff81e690f0 uvm_map_inentry_pc r9 0x14 r10 0 r11 0x42b224700a01a1e3 r12 0xffff80002e373bb0 r13 0xffffffff8288cea8 inet6sw+0x208 r14 0x3 r15 0x3c rip 0xffffffff81e82144 socreate+0x84 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff80002e373b30 ss 0x10 socreate+0x84: cmpq $0,0(%rax) ddb{1}> show proc PROC (syz-executor.0) pid=485752 stat=onproc flags process=10 proc=4000000 pri=71, usrpri=71, nice=20 forw=0xffffffffffffffff, list=0xffff800024cb2550,0xffff800024cb2aa0 process=0xffff80002af229b0 user=0xffff80002e36e000, vmspace=0xfffffd807828fe78 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 56368 410610 4477 32767 2 0x10 syz-executor.5 56368 423095 4477 32767 3 0x4000090 fsleep syz-executor.5 46431 183157 90223 32767 2 0x10 syz-executor.0 *46431 485752 90223 32767 7 0x4000010 syz-executor.0 99294 215143 82332 32767 2 0x10 syz-executor.4 18635 100640 92260 32767 2 0x10 syz-executor.1 18635 314022 92260 32767 2 0x4000010 syz-executor.1 26879 337592 82327 32767 2 0x10 syz-executor.6 26879 468735 82327 32767 3 0x4000090 fsleep syz-executor.6 71700 39930 0 0 3 0x14200 bored sosplice 82327 52444 96055 32767 3 0x90 nanoslp syz-executor.6 96055 140767 98895 0 3 0x82 wait syz-executor.6 61987 344484 75483 32767 3 0x90 nanoslp syz-executor.7 75483 259335 98895 0 3 0x82 wait syz-executor.7 4477 275792 54534 32767 3 0x90 nanoslp syz-executor.5 13132 386693 91726 32767 3 0x90 nanoslp syz-executor.3 82332 337577 52791 32767 2 0x10 syz-executor.4 92260 146215 54638 32767 3 0x90 nanoslp syz-executor.1 54534 208281 98895 0 3 0x82 wait syz-executor.5 52791 408600 98895 0 3 0x82 wait syz-executor.4 91726 286525 98895 0 3 0x82 wait syz-executor.3 5383 426968 97288 32767 3 0x90 nanoslp syz-executor.2 90223 50689 27081 32767 3 0x90 nanoslp syz-executor.0 97288 38960 98895 0 3 0x82 wait syz-executor.2 54638 386239 98895 0 3 0x82 wait syz-executor.1 27081 110240 98895 0 3 0x82 wait syz-executor.0 98895 120145 89400 0 3 0x82 thrsleep syz-fuzzer 98895 446633 89400 0 3 0x4000082 thrsleep syz-fuzzer 98895 393989 89400 0 3 0x4000082 thrsleep syz-fuzzer 98895 32208 89400 0 3 0x4000082 thrsleep syz-fuzzer 98895 124121 89400 0 3 0x4000082 thrsleep syz-fuzzer 98895 148562 89400 0 3 0x4000082 thrsleep syz-fuzzer 98895 173460 89400 0 3 0x4000082 kqread syz-fuzzer 98895 254538 89400 0 3 0x4000082 thrsleep syz-fuzzer 89400 330561 84733 0 3 0x10008a sigsusp ksh 84733 48021 2830 0 3 0x9a kqread sshd 99653 319617 1 0 3 0x100083 ttyin getty 2830 180506 1 0 3 0x88 kqread sshd 16098 471082 29132 73 3 0x1100090 kqread syslogd 29132 324073 1 0 3 0x100082 netio syslogd 80394 291661 1 0 3 0x100080 kqread resolvd 69556 215505 56087 77 3 0x100092 kqread dhcpleased 76507 266017 56087 77 3 0x100092 kqread dhcpleased 56087 171070 1 0 3 0x80 kqread dhcpleased 36667 148443 0 0 3 0x14200 bored smr 10208 98667 0 0 2 0x14200 zerothread 64741 281614 0 0 3 0x14200 aiodoned aiodoned 23065 59244 0 0 3 0x14200 syncer update 87780 295570 0 0 3 0x14200 cleaner cleaner 78002 487520 0 0 7 0x14200 reaper 38838 272351 0 0 3 0x14200 pgdaemon pagedaemon 65694 400469 0 0 3 0x14200 bored viomb 45652 53045 0 0 3 0x40014200 acpi0 acpi0 80439 256348 0 0 3 0x40014200 idle1 92532 211586 0 0 3 0x14200 bored softnet 11531 334536 0 0 3 0x14200 bored systqmp 24072 83030 0 0 3 0x14200 bored systq 92064 504534 0 0 3 0x40014200 bored softclock 18450 515951 0 0 3 0x40014200 idle0 1 11076 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd80671497d0) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pmap_do_remove+0x8b rcr3 machine/cpufunc.h:141 [inline] #3 pmap_do_remove+0x8b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:414 [inline] #3 pmap_do_remove+0x8b sys/arch/amd64/amd64/pmap.c:1769 #4 uvm_unmap_kill_entry_withlock+0x1af sys/uvm/uvm_map.c:2139 #5 uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #5 uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2771 #6 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 #7 reaper+0x18b sys/kern/kern_exit.c:457 #8 proc_trampoline+0x1c Process 46431 (syz-executor.0) thread 0xffff800024cb2d30 (485752) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82abcc60) #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_socketpair+0x6e sys/kern/uipc_syscalls.c:430 #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 10172 6407K 6419K 78643K 11262 0 pcb 13 8K 8K 78643K 13 0 rtable 238 6K 7K 78643K 354 0 ifaddr 81 16K 16K 78643K 82 0 counters 56 35K 35K 78643K 56 0 ioctlops 0 0K 2K 78643K 33 0 iov 0 0K 12K 78643K 7 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1270 79K 79K 78643K 1286 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 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 121K 78643K 361 0 proc 56 74K 111K 78643K 451 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 8 0 in_multi 99 6K 6K 78643K 99 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 603 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 277 78K 78K 78643K 5552 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 8 0 NDP 11 0K 2K 78643K 27 0 temp 84 4689K 4753K 78643K 4585 0 kqueue 12 18K 22K 78643K 45 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 43 0 40 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 136 61 0 48 1 0 1 1 0 8 0 syncache 296 14 0 14 1 0 1 1 0 8 1 tcpqe 32 78 0 78 1 0 1 1 0 8 1 tcpcb 736 68 0 64 4 0 4 4 0 8 3 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 304 125 0 118 2 0 2 2 0 8 1 nd6 48 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 452 0 0 29 0 29 29 0 8 0 art_table 32 453 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 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 1714 0 286 90 0 90 90 0 8 0 ffsino 272 1714 0 286 96 0 96 96 0 8 0 nchpl 144 2194 0 532 62 0 62 62 0 8 0 uvmvnodes 80 1827 0 0 38 0 38 38 0 8 0 vnodes 224 1827 0 0 108 0 108 108 0 8 0 namei 1024 6776 0 6776 2 1 1 2 0 8 1 percpumem 16 40 0 0 1 0 1 1 0 8 0 scxspl 216 6640 0 6640 2 1 1 2 0 8 1 plimitpl 152 52 0 30 1 0 1 1 0 8 0 sigapl 424 634 0 582 7 0 7 7 0 8 0 futexpl 64 877 0 875 1 0 1 1 0 8 0 knotepl 120 110 0 0 4 0 4 4 0 8 0 kqueuepl 216 41 0 33 1 0 1 1 0 8 0 pipepl 336 136 0 107 3 0 3 3 0 8 0 fdescpl 496 619 0 585 7 1 6 6 0 8 0 filepl 152 1910 0 1675 10 0 10 10 0 8 0 lockfpl 104 40 0 38 1 0 1 1 0 8 0 lockfspl 48 19 0 17 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 7 1 0 1 1 0 8 0 ucredpl 96 139 0 121 1 0 1 1 0 8 0 zombiepl 144 585 0 582 1 0 1 1 0 8 0 processpl 1064 634 0 582 5 1 4 4 0 8 0 procpl 672 877 0 813 6 0 6 6 0 8 0 sosppl 168 7 0 7 1 0 1 1 0 8 1 sockpl 480 229 0 206 4 0 4 4 0 8 1 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 117 0 0 14 0 14 14 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 353 0 0 22 0 22 22 0 8 0 bufpl 288 3818 0 139 263 0 263 263 0 8 0 anonpl 24 121003 0 112986 72 2 70 70 0 186 11 amapchunkpl 152 12220 0 11606 29 1 28 28 0 158 1 amappl16 200 1085 0 918 18 0 18 18 0 8 9 amappl15 192 156 0 147 1 0 1 1 0 8 0 amappl14 184 41 0 34 1 0 1 1 0 8 0 amappl13 176 112 0 109 1 0 1 1 0 8 0 amappl12 168 62 0 59 1 0 1 1 0 8 0 amappl11 160 41 0 31 1 0 1 1 0 8 0 amappl10 152 47 0 43 1 0 1 1 0 8 0 amappl9 144 469 0 464 1 0 1 1 0 8 0 amappl8 136 570 0 529 2 0 2 2 0 8 0 amappl7 128 138 0 124 1 0 1 1 0 8 0 amappl6 120 258 0 236 2 0 2 2 0 8 1 amappl5 112 482 0 460 1 0 1 1 0 8 0 amappl4 104 777 0 754 2 0 2 2 0 8 0 amappl3 96 228 0 212 1 0 1 1 0 8 0 amappl2 88 574 0 530 3 0 3 3 0 8 1 amappl1 80 13757 0 13145 18 1 17 18 0 8 3 amappl 88 5112 0 4891 7 1 6 6 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 24 619 0 585 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 619 0 585 1 0 1 1 0 8 0 vmmpekpl 168 8557 0 8503 3 0 3 3 0 8 0 vmmpepl 168 57198 0 54927 112 0 112 112 0 357 4 vmsppl 368 618 0 584 4 0 4 4 0 8 0 rwobjpl 56 16464 0 13581 43 0 43 43 0 8 0 pdppl 4096 1245 0 1168 109 28 81 93 0 8 4 pvpl 32 342842 0 329924 242 0 242 242 0 265 126 pmappl 248 618 0 584 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 646 0 31 18 0 18 18 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff828d5ff0) 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(ffffffff82abca58) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82abca58) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800021135310,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd807828f5d8) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd807828f5d8) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9a40) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff828d5ff0) 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(ffffffff82abca58) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82abca58) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800021135310,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd807828f5d8) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd807828f5d8) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9a40) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at socreate+0x84: cmpq $0,0(%rax) socreate(18,ffff80002e373bb0,3,3c) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socketpair(ffff800024cb2d30,ffff80002e373c48,ffff80002e373ca0) at sys_socketpair+0x6e sys/kern/uipc_syscalls.c:430 syscall(ffff80002e373d10) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e373d10) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4ac59677480, count: 11 ddb{1}> trace socreate(18,ffff80002e373bb0,3,3c) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socketpair(ffff800024cb2d30,ffff80002e373c48,ffff80002e373ca0) at sys_socketpair+0x6e sys/kern/uipc_syscalls.c:430 syscall(ffff80002e373d10) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e373d10) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4ac59677480, count: -4