panic: pmap_unwire: invalid PDE Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *319220 25732 32767 0x10 0x4000000 1K syz-executor.0 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8296cb41) at panic+0x17b sys/kern/subr_prf.c:198 pmap_unwire(fffffd807f003e88,20000000) at pmap_unwire+0x1d9 sys/arch/amd64/amd64/pmap.c:2225 uvm_fault_unwire_locked(fffffd806f1e7548,20000000,20001000) at uvm_fault_unwire_locked+0x20c sys/uvm/uvm_fault.c:1691 uvm_fault_unwire(fffffd806f1e7548,20000000,20001000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a17e008,ffff80002a248320,ffff80002a248270) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002a248320) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002a248320) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9a9565ab370, count: 7 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: pmap_unwire: invalid PDE ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8296cb41) at panic+0x17b sys/kern/subr_prf.c:198 pmap_unwire(fffffd807f003e88,20000000) at pmap_unwire+0x1d9 sys/arch/amd64/amd64/pmap.c:2225 uvm_fault_unwire_locked(fffffd806f1e7548,20000000,20001000) at uvm_fault_unwire_locked+0x20c sys/uvm/uvm_fault.c:1691 uvm_fault_unwire(fffffd806f1e7548,20000000,20001000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a17e008,ffff80002a248320,ffff80002a248270) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002a248320) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002a248320) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9a9565ab370, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a247fc0 rbx 0xffff800029ceccb7 rdx 0x3fd rcx 0 rax 0x20 r8 0x101010101010101 r9 0x8080808080808080 r10 0x9c2869a57a0fe875 r11 0x14ea633403d746e3 r12 0xffff800029cecab8 r13 0 r14 0 r15 0x1 rip 0xffffffff819322cc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002a247fb0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) tid=319220 pid=25732 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a146d40,0xffff80002a17ed60 process=0xffff8000ffff8d58 user=0xffff80002a243000, vmspace=0xfffffd806f1e7548 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 25732 287170 88264 32767 3 0x10 vmmaplk syz-executor.0 *25732 319220 88264 32767 7 0x4000010 syz-executor.0 25732 248772 88264 32767 3 0x4000010 biowait syz-executor.0 88264 76852 24690 32767 3 0x90 nanoslp syz-executor.0 24690 506491 69542 0 3 0x82 wait syz-executor.0 69542 31045 15285 0 3 0x2000082 thrsleep syz-execprog 69542 6067 15285 0 3 0x6000082 nanoslp syz-execprog 69542 33566 15285 0 3 0x6000082 thrsleep syz-execprog 69542 500711 15285 0 3 0x6000082 thrsleep syz-execprog 69542 397866 15285 0 3 0x6000082 thrsleep syz-execprog 69542 287516 15285 0 3 0x6000082 wait syz-execprog 69542 522433 15285 0 3 0x6000082 thrsleep syz-execprog 69542 83559 15285 0 3 0x6000082 kqread syz-execprog 69542 311088 15285 0 3 0x6000082 thrsleep syz-execprog 69542 186122 15285 0 3 0x6000082 thrsleep syz-execprog 69542 76774 15285 0 3 0x6000082 thrsleep syz-execprog 15285 493298 58182 0 3 0x10008a sigsusp ksh 58182 82976 8837 0 3 0x9a kqread sshd 16033 91826 1 0 3 0x100083 ttyin getty 8837 48511 1 0 3 0x88 kqread sshd 24237 301502 14327 73 3 0x1100090 kqread syslogd 14327 462218 1 0 3 0x100082 netio syslogd 78654 454457 1 0 3 0x100080 kqread resolvd 36518 225672 33985 77 3 0x100092 kqread dhcpleased 44732 34393 33985 77 3 0x100092 kqread dhcpleased 33985 72935 1 0 3 0x80 kqread dhcpleased 97366 28988 0 0 3 0x14200 bored smr 51912 409658 0 0 3 0x14200 pgzero zerothread 95743 25625 0 0 3 0x14200 aiodoned aiodoned 52064 351738 0 0 3 0x14200 syncer update 96776 476426 0 0 3 0x14200 cleaner cleaner 2684 471642 0 0 3 0x14200 reaper reaper 69460 303512 0 0 3 0x14200 pgdaemon pagedaemon 48767 193327 0 0 3 0x14200 bored viomb 64245 26252 0 0 3 0x40014200 acpi0 acpi0 98636 334337 0 0 3 0x40014200 idle1 82986 385529 0 0 3 0x14200 bored softnet3 55912 277064 0 0 3 0x14200 bored softnet2 59514 159554 0 0 3 0x14200 bored softnet1 69137 471963 0 0 3 0x14200 bored softnet0 31721 418183 0 0 3 0x14200 bored systqmp 45168 251449 0 0 3 0x14200 bored systq 60835 140346 0 0 3 0x14200 tmoslp softclockmp 63753 318378 0 0 3 0x40014200 tmoslp softclock 32028 304971 0 0 7 0x40014200 idle0 1 110251 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 25732 (syz-executor.0) thread 0xffff80002a17e008 (319220) exclusive rwlock uobjlk r = 0 (0xfffffd806bc0eef8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 uvm_fault_unwire_locked+0x1d6 sys/uvm/uvm_fault.c:1682 #3 uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 #4 sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 #5 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #5 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82e2c380) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x46f sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19b sys/kern/kern_synch.c:414 #4 rw_enter+0x341 sys/kern/kern_rwlock.c:285 #5 uvm_fault_unwire_locked+0x1d6 sys/uvm/uvm_fault.c:1682 #6 uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 #7 sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 #8 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #8 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 shared rwlock vmmaplk r = 0 (0xfffffd806f1e7640) #0 witness_lock+0x447 #1 uvm_fault_unwire+0x35 sys/uvm/uvm_fault.c:1622 #2 sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 #3 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #3 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff82cb2bb0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 sys_sysctl+0x1c3 sys/kern/kern_sysctl.c:238 #3 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #3 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 25732 (syz-executor.0) thread 0xffff80002a17ed50 (248772) exclusive rrwlock inode r = 0 (0xfffffd8069c95f78) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 sys_ftruncate+0x12e sys/kern/vfs_syscalls.c:2872 #6 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #6 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10152 6391K 6419K 166960K 11230 0 pcb 15 10K 10K 166960K 15 0 rtable 80 2K 2K 166960K 140 0 pf 15 6K 6K 166960K 15 0 ifaddr 16 10K 10K 166960K 16 0 ifgroup 22 1K 1K 166960K 22 0 counters 50 34K 34K 166960K 50 0 ioctlops 0 0K 2K 166960K 22 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1174 73K 74K 166960K 1187 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 5 13K 17K 166960K 89 0 proc 56 78K 91K 166960K 275 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 22 1K 1K 166960K 22 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 273 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 159 15K 15K 166960K 3579 0 UVM aobj 3 2K 2K 166960K 3 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 4 0K 0K 166960K 6 0 temp 1 6756K 6820K 166960K 3318 0 kqueue 12 18K 18K 166960K 25 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 22 0 19 1 0 1 1 0 8 0 rtentry 112 34 0 1 1 0 1 1 0 8 0 unpcb 144 33 0 20 1 0 1 1 0 8 0 syncache 320 5 0 5 1 1 0 1 0 8 0 tcpqe 32 131 0 131 1 1 0 1 0 8 0 tcpcb 808 8 0 5 1 0 1 1 0 8 0 arp 120 4 0 0 1 0 1 1 0 8 0 inpcb 376 30 0 24 1 0 1 1 0 8 0 nd6 136 3 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 144 0 0 9 0 9 9 0 8 0 art_table 32 145 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1586 0 181 89 0 89 89 0 8 1 ffsino 272 1586 0 181 94 0 94 94 0 8 0 nchpl 144 1953 0 322 61 0 61 61 0 8 0 uvmvnodes 80 1595 0 0 33 0 33 33 0 8 0 vnodes 216 1595 0 0 89 0 89 89 0 8 0 namei 1024 5644 0 5644 2 0 2 2 0 8 2 percpumem 16 39 0 0 1 0 1 1 0 8 0 kstatmem 264 8 0 0 1 0 1 1 0 8 0 scxspl 216 7372 0 7370 3 2 1 2 1 8 0 plimitpl 152 28 0 19 1 0 1 1 0 8 0 sigapl 424 407 0 373 5 0 5 5 0 8 1 futexpl 64 338 0 338 1 0 1 1 0 8 1 knotepl 120 76 0 0 3 0 3 3 0 8 0 kqueuepl 216 21 0 13 1 0 1 1 0 8 0 pipepl 320 111 0 104 2 0 2 2 0 8 1 fdescpl 496 389 0 373 5 1 4 4 0 8 1 filepl 152 1521 0 1455 4 0 4 4 0 8 1 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 104 69 0 58 1 0 1 1 0 8 0 zombiepl 144 373 0 373 1 0 1 1 0 8 1 processpl 1136 407 0 373 4 0 4 4 0 8 1 procpl 680 614 0 568 5 0 5 5 0 8 1 sockpl 584 85 0 63 2 0 2 2 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 254 0 0 32 0 32 32 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 267 0 0 17 0 17 17 0 8 0 bufpl 280 4236 0 135 293 0 293 293 0 8 0 anonpl 24 185646 0 182088 56 0 56 56 0 186 31 amapchunkpl 152 11865 0 11481 27 0 27 27 0 158 10 amappl16 200 5153 0 5083 6 0 6 6 0 8 0 amappl15 192 16 0 14 2 1 1 1 0 8 0 amappl14 184 133 0 123 2 0 2 2 0 8 1 amappl13 176 7 0 7 2 1 1 1 0 8 1 amappl12 168 905 0 889 2 0 2 2 0 8 1 amappl11 160 54 0 44 1 0 1 1 0 8 0 amappl10 152 21 0 18 1 0 1 1 0 8 0 amappl9 144 149 0 148 1 0 1 1 0 8 0 amappl8 136 115 0 94 2 0 2 2 0 8 1 amappl7 128 160 0 144 2 0 2 2 0 8 0 amappl6 120 144 0 135 1 0 1 1 0 8 0 amappl5 112 118 0 110 1 0 1 1 0 8 0 amappl4 104 389 0 366 2 0 2 2 0 8 1 amappl3 96 2900 0 2855 2 0 2 2 0 8 0 amappl2 88 802 0 744 3 0 3 3 0 8 0 amappl1 80 9979 0 9523 24 4 20 22 0 8 8 amappl 88 3159 0 3059 4 0 4 4 0 92 1 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 389 0 373 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 389 0 373 1 0 1 1 0 8 0 vmmpekpl 168 9747 0 9727 2 0 2 2 0 8 0 vmmpepl 168 43596 0 42358 113 1 112 112 0 357 57 vmsppl 448 388 0 373 3 0 3 3 0 8 1 rwobjpl 56 20991 0 18584 45 0 45 45 0 8 7 pdppl 4096 785 0 746 77 32 45 61 0 8 6 pvpl 32 44321 0 0 358 0 358 358 0 265 0 pmappl 248 388 0 373 3 1 2 2 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 340 0 34 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82d32ff0) at x86_ipi_db+0x1e 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+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x36 sys/dev/kcov.c:164 intr_handler(ffff80002a102680,ffff80000006bc00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:539 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffffffff82d32ff0) at sched_idle+0x41e sys/kern/kern_sched.c:183 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff82d32ff0) at x86_ipi_db+0x1e 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+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x36 sys/dev/kcov.c:164 intr_handler(ffff80002a102680,ffff80000006bc00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:539 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffffffff82d32ff0) at sched_idle+0x41e sys/kern/kern_sched.c:183 end trace frame: 0x0, count: -8 ddb{0}>