kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Aug 31 22:39:39 PDT 2021 OpenBSD/amd64 (ci-openbsd-multicore-3.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.10' (ED25519) to the list of known hosts. executing program login: vm_impl_init_vmx: uvm_share failed (22) panic: kernel diagnostic assertion "_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_map.c", line 3641 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *399744 50503 0 0x2 0 0 syz-executor7269 db_enter() at db_enter+0x18 panic(ffffffff824502ee) at panic+0x177 __assert(ffffffff824bffea,ffffffff824cd928,e39,ffffffff824ce6c6) at __assert+0x25 uvmspace_free(fffffd806f14b178) at uvmspace_free+0xe4 vm_impl_init_vmx(ffff800021215810,ffff8000ffff7cf0) at vm_impl_init_vmx+0x159 vm_create(ffff800000b29800,ffff8000ffff7cf0) at vm_create+0x19b vmmioctl(a00,c5005601,ffff800000b29800,1,ffff8000ffff7cf0) at vmmioctl+0x1f2 VOP_IOCTL(fffffd806e3fb750,c5005601,ffff800000b29800,1,fffffd807f7d8780,ffff8000ffff7cf0) at VOP_IOCTL+0x9a vn_ioctl(fffffd806e48c860,c5005601,ffff800000b29800,ffff8000ffff7cf0) at vn_ioctl+0xba sys_ioctl(ffff8000ffff7cf0,ffff8000212290e8,ffff800021229130) at sys_ioctl+0x4a2 syscall(ffff8000212291b0) at syscall+0x5a9 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff82b0, count: 3 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_map.c", line 3641 ddb{0}> trace db_enter() at db_enter+0x18 panic(ffffffff824502ee) at panic+0x177 __assert(ffffffff824bffea,ffffffff824cd928,e39,ffffffff824ce6c6) at __assert+0x25 uvmspace_free(fffffd806f14b178) at uvmspace_free+0xe4 vm_impl_init_vmx(ffff800021215810,ffff8000ffff7cf0) at vm_impl_init_vmx+0x159 vm_create(ffff800000b29800,ffff8000ffff7cf0) at vm_create+0x19b vmmioctl(a00,c5005601,ffff800000b29800,1,ffff8000ffff7cf0) at vmmioctl+0x1f2 VOP_IOCTL(fffffd806e3fb750,c5005601,ffff800000b29800,1,fffffd807f7d8780,ffff8000ffff7cf0) at VOP_IOCTL+0x9a vn_ioctl(fffffd806e48c860,c5005601,ffff800000b29800,ffff8000ffff7cf0) at vn_ioctl+0xba sys_ioctl(ffff8000ffff7cf0,ffff8000212290e8,ffff800021229130) at sys_ioctl+0x4a2 syscall(ffff8000212291b0) at syscall+0x5a9 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff82b0, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800021228be0 rbx 0xffffffff8280abff cpu_info_full_primary+0x2bff rdx 0x8b rcx 0x2 rax 0x8a r8 0xffffffff81a0be34 kprintf+0x144 r9 0x1 r10 0x40196d6b9371f6a0 r11 0xb767ae8f1a1f75b0 r12 0xffffffff8280aa00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff81e3e908 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021228bd0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor7269) pid=399744 stat=onproc flags process=2 proc=0 pri=53, usrpri=53, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff62b0,0xffffffff82913618 process=0xffff80002120ae20 user=0xffff800021224000, vmspace=0xfffffd806f14b008 estcpu=3, cpticks=2, pctcpu=0.0 user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *50503 399744 55479 0 7 0x2 syz-executor7269 55479 65601 69566 0 3 0x10008a sigsusp ksh 69566 521937 39393 0 3 0x9a select sshd 50310 372305 1 0 3 0x100083 ttyin getty 39393 421249 1 0 3 0x88 select sshd 30288 166732 17082 74 3 0x100092 bpf pflogd 17082 476698 1 0 3 0x80 netio pflogd 52064 407308 39319 73 3 0x100090 kqread syslogd 39319 254209 1 0 3 0x100082 netio syslogd 18608 47821 1 0 3 0x100080 kqread resolvd 94341 512179 7017 77 3 0x100092 kqread dhcpleased 68745 313064 7017 77 3 0x100092 kqread dhcpleased 7017 410230 1 0 3 0x80 kqread dhcpleased 95393 154645 0 0 3 0x14200 bored smr 82959 72468 0 0 3 0x14200 pgzero zerothread 79410 127088 0 0 3 0x14200 aiodoned aiodoned 12050 287159 0 0 3 0x14200 syncer update 71557 203843 0 0 3 0x14200 cleaner cleaner 94885 274093 0 0 3 0x14200 reaper reaper 18214 160255 0 0 3 0x14200 pgdaemon pagedaemon 11684 143842 0 0 3 0x14200 bored crynlk 8871 326875 0 0 3 0x14200 bored crypto 25366 410310 0 0 3 0x14200 bored viomb 44122 233888 0 0 3 0x40014200 acpi0 acpi0 63721 517444 0 0 7 0x40014200 idle1 94647 116471 0 0 3 0x14200 bored softnet 65669 191529 0 0 3 0x14200 bored systqmp 73708 471960 0 0 3 0x14200 bored systq 51829 421663 0 0 3 0x40014200 bored softclock 53980 131144 0 0 3 0x40014200 idle0 1 90089 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 50503 (syz-executor7269) thread 0xffff8000ffff7cf0 (399744) exclusive rwlock vmlistlock r = 0 (0xffff800000655c78) #0 witness_lock+0x4b0 #1 vm_create+0x12e #2 vmmioctl+0x1f2 #3 VOP_IOCTL+0x9a #4 vn_ioctl+0xba #5 sys_ioctl+0x4a2 #6 syscall+0x5a9 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10111 6416K 6417K 78643K 11201 0 pcb 13 8K 8K 78643K 13 0 rtable 62 2K 2K 78643K 112 0 ifaddr 29 8K 8K 78643K 30 0 counters 40 33K 33K 78643K 40 0 ioctlops 1 2K 4K 78643K 1480 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 6 0 vnodes 1183 74K 75K 78643K 1188 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 12598 0 file desc 1 0K 0K 78643K 1 0 proc 67 87K 87K 78643K 278 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 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 19 95K 95K 78643K 19 0 exec 0 0K 2K 78643K 348 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 84 16K 16K 78643K 1732 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 4 0K 0K 78643K 4 0 temp 23 4193K 4257K 78643K 1963 0 kqueue 9 12K 12K 78643K 9 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 17 0 14 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 120 35 0 20 1 0 1 1 0 8 0 syncache 296 5 0 5 1 0 1 1 0 8 1 tcpcb 736 8 0 5 1 0 1 1 0 8 0 arp 120 2 0 0 1 0 1 1 0 8 0 inpcb 304 32 0 26 1 0 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 pfstitem 24 9 0 0 1 0 1 1 0 8 0 pfstkey 112 9 0 0 1 0 1 1 0 8 0 pfstate 320 9 0 0 1 0 1 1 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 97 0 0 7 0 7 7 0 8 0 art_table 32 98 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1413 0 23 87 0 87 87 0 8 0 ffsino 272 1413 0 23 93 0 93 93 0 8 0 nchpl 144 1588 0 40 58 0 58 58 0 8 0 uvmvnodes 72 1423 0 0 26 0 26 26 0 8 0 vnodes 224 1423 0 0 84 0 84 84 0 8 0 namei 1024 4147 0 4147 1 0 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 vmpool 560 1 0 0 1 0 1 1 0 8 0 scxspl 216 3478 0 3478 2 1 1 2 0 8 1 plimitpl 152 16 0 9 1 0 1 1 0 8 0 sigapl 424 255 0 224 4 0 4 4 0 8 0 knotepl 112 25 0 0 1 0 1 1 0 8 0 kqueuepl 216 5 0 0 1 0 1 1 0 8 0 pipepl 336 69 0 66 1 0 1 1 0 8 0 fdescpl 496 239 0 224 3 0 3 3 0 8 0 filepl 152 1085 0 1026 3 0 3 3 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 69 0 57 1 0 1 1 0 8 0 zombiepl 144 224 0 224 1 0 1 1 0 8 1 processpl 1072 255 0 224 3 0 3 3 0 8 0 procpl 672 255 0 224 3 0 3 3 0 8 0 sockpl 480 84 0 60 4 0 4 4 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 57 0 0 8 0 8 8 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 104 0 0 7 0 7 7 0 8 0 bufpl 280 2012 0 93 138 0 138 138 0 8 0 anonpl 24 32732 0 30426 17 2 15 17 0 186 1 amapchunkpl 152 3043 0 2899 8 2 6 8 0 158 0 amappl16 200 96 0 92 1 0 1 1 0 8 0 amappl13 176 18 0 17 1 0 1 1 0 8 0 amappl12 168 9 0 9 1 0 1 1 0 8 1 amappl11 160 44 0 30 1 0 1 1 0 8 0 amappl10 152 24 0 20 1 0 1 1 0 8 0 amappl9 144 223 0 219 1 0 1 1 0 8 0 amappl8 136 275 0 275 1 0 1 1 0 8 1 amappl7 128 51 0 44 1 0 1 1 0 8 0 amappl6 120 85 0 80 1 0 1 1 0 8 0 amappl5 112 176 0 159 1 0 1 1 0 8 0 amappl4 104 526 0 506 1 0 1 1 0 8 0 amappl3 96 48 0 45 1 0 1 1 0 8 0 amappl2 88 401 0 355 2 0 2 2 0 8 0 amappl1 80 7576 0 7200 9 0 9 9 0 8 0 amappl 88 1485 0 1420 2 0 2 2 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 64 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 240 0 224 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 240 0 224 1 0 1 1 0 8 0 vmmpekpl 168 6024 0 6008 1 0 1 1 0 8 0 vmmpepl 168 22450 0 21603 41 0 41 41 0 357 3 vmsppl 368 239 0 224 2 0 2 2 0 8 0 rwobjpl 56 7002 0 6450 9 0 9 9 0 8 1 pdppl 4096 488 0 448 52 12 40 44 0 8 0 pvpl 32 111865 0 107672 38 0 38 38 0 265 3 pmappl 224 239 0 224 2 0 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 270 0 15 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 panic(ffffffff824502ee) at panic+0x177 __assert(ffffffff824bffea,ffffffff824cd928,e39,ffffffff824ce6c6) at __assert+0x25 uvmspace_free(fffffd806f14b178) at uvmspace_free+0xe4 vm_impl_init_vmx(ffff800021215810,ffff8000ffff7cf0) at vm_impl_init_vmx+0x159 vm_create(ffff800000b29800,ffff8000ffff7cf0) at vm_create+0x19b vmmioctl(a00,c5005601,ffff800000b29800,1,ffff8000ffff7cf0) at vmmioctl+0x1f2 VOP_IOCTL(fffffd806e3fb750,c5005601,ffff800000b29800,1,fffffd807f7d8780,ffff8000ffff7cf0) at VOP_IOCTL+0x9a vn_ioctl(fffffd806e48c860,c5005601,ffff800000b29800,ffff8000ffff7cf0) at vn_ioctl+0xba sys_ioctl(ffff8000ffff7cf0,ffff8000212290e8,ffff800021229130) at sys_ioctl+0x4a2 syscall(ffff8000212291b0) at syscall+0x5a9 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff82b0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x2eb sched_idle(ffff800020d38ff0) at sched_idle+0x417 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x2eb sched_idle(ffff800020d38ff0) at sched_idle+0x417 end trace frame: 0x0, count: -5 ddb{1}>