panic: mtx 0xffffffff83870768: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 259684 20855 32767 0x10 0 1 syz-executor *231720 80051 32767 0x10 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833382e6) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83870768) at mtx_enter_try+0x1da mtx_enter(ffffffff83870768) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd80086828e0) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80086828e0) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80086828e0) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8069545980,0,ffff800031c098f8,ffff800031c098dc,0,2,b8ff1af7dadcfe67,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff800031c09b10,ffff800031c09b48,ffff800031c09990,ffff800031c09978) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff800031c09b10,ffff800031c09b48,ffff800031c09a90) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bbe05d8,200000000000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff800031c09ca0,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff800031c09ca0) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x717ab1ad9d00, count: 2 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: mtx 0xffffffff83870768: locking against myself ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833382e6) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83870768) at mtx_enter_try+0x1da mtx_enter(ffffffff83870768) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd80086828e0) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80086828e0) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80086828e0) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8069545980,0,ffff800031c098f8,ffff800031c098dc,0,2,b8ff1af7dadcfe67,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff800031c09b10,ffff800031c09b48,ffff800031c09990,ffff800031c09978) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff800031c09b10,ffff800031c09b48,ffff800031c09a90) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bbe05d8,200000000000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff800031c09ca0,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff800031c09ca0) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x717ab1ad9d00, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800031c09630 rbx 0xffffffff83781ddf cpu_info_full_primary+0x2ddf rdx 0 rcx 0xffff80003c4aad28 rax 0xffffffff83780ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x5823a3330c68cd1f r11 0xa5a547d3dacc30c8 r12 0xffffffff83781be0 cpu_info_full_primary+0x2be0 r13 0 r14 0 r15 0x1 rip 0xffffffff82b4a715 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800031c09620 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=231720 pid=80051 tcnt=4 stat=onproc flags process=10 proc=0 runpri=36, usrpri=73, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2e4a80,0xffff80003c4aafd0 process=0xffff80003c44e730 user=0xffff800031c04000, vmspace=0xfffffd806bbe05d8 estcpu=23, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20855 259684 82211 32767 7 0x10 syz-executor 20855 511990 82211 32767 2 0x4000010 syz-executor *80051 231720 84530 32767 7 0x10 syz-executor 80051 505803 84530 32767 3 0x4000090 fsleep syz-executor 80051 290331 84530 32767 3 0x4000010 biowait syz-executor 80051 310844 84530 32767 3 0x4000090 fsleep syz-executor 51723 372448 16053 32767 2 0x10 syz-executor 51723 187891 16053 32767 3 0x4000090 fsleep syz-executor 7145 57073 0 0 3 0x14200 bored sosplice 65566 249387 90618 32767 3 0x90 piperd syz-executor 17026 1277 24340 32767 3 0x90 piperd syz-executor 82211 224845 8879 32767 2 0x10 syz-executor 84530 339442 15451 32767 3 0x90 nanoslp syz-executor 59535 395195 75241 32767 3 0x90 piperd syz-executor 16053 308559 32706 32767 3 0x90 nanoslp syz-executor 56008 510257 98078 32767 3 0x90 piperd syz-executor 8879 260535 44811 0 3 0x82 wait syz-executor 15451 484551 44811 0 3 0x82 wait syz-executor 90618 103183 44811 0 3 0x82 wait syz-executor 24340 3970 44811 0 3 0x82 wait syz-executor 75241 156674 44811 0 3 0x82 wait syz-executor 32706 355813 44811 0 3 0x82 wait syz-executor 98078 196573 44811 0 3 0x82 wait syz-executor 44811 66149 863 0 2 0x10000002 syz-executor 863 508670 45348 0 3 0x10008a sigsusp ksh 45348 52747 81692 0 3 0x98 kqread sshd-session 81692 345637 85659 0 3 0x92 kqread sshd-session 5234 298982 1 0 3 0x100083 ttyin getty 85659 355596 1 0 3 0x88 kqread sshd 18480 359823 64113 73 3 0x1100090 kqread syslogd 64113 487985 1 0 3 0x100082 sbwait syslogd 45146 360201 1 0 3 0x100080 kqread resolvd 18986 59380 79587 77 3 0x100092 kqread dhcpleased 80250 57982 79587 77 3 0x100092 kqread dhcpleased 79587 174791 1 0 3 0x80 kqread dhcpleased 47149 467833 0 0 3 0x14200 bored smr 21478 125551 0 0 2 0x14200 zerothread 82669 125940 0 0 3 0x14200 aiodoned aiodoned 41823 211018 0 0 3 0x14200 syncer update 35979 173121 0 0 3 0x14200 cleaner cleaner 74648 250977 0 0 3 0x14200 reaper reaper 83475 289227 0 0 3 0x14200 pgdaemon pagedaemon 16434 326327 0 0 3 0x14200 bored viomb 81649 439829 0 0 3 0x40014200 acpi0 acpi0 85544 423940 0 0 3 0x40014200 idle1 30870 5079 0 0 3 0x14200 bored softnet7 78181 318383 0 0 3 0x14200 bored softnet6 1152 394027 0 0 3 0x14200 bored softnet5 50571 349043 0 0 3 0x14200 bored softnet4 62843 215349 0 0 3 0x14200 bored softnet3 65568 520178 0 0 3 0x14200 bored softnet2 99791 99707 0 0 3 0x14200 bored softnet1 80115 349603 0 0 3 0x14200 bored softnet0 71871 486318 0 0 3 0x14200 bored systqmp 29885 15193 0 0 3 0x14200 bored systq 68213 356765 0 0 3 0x14200 tmoslp softclockmp 60505 440857 0 0 3 0x40014200 tmoslp softclock 24277 127945 0 0 3 0x40014200 idle0 1 312175 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83870778) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 uvn_get+0x674 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #9 recall_trap+0x8 Process 80051 (syz-executor) thread 0xffff80003c4aad28 (231720) exclusive rwlock uobjlk r = 0 (0xfffffd8065ed4878) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 uvn_io+0x667 sys/uvm/uvm_vnode.c:1298 #3 uvn_get+0x31d sys/uvm/uvm_vnode.c:1102 #4 uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #9 recall_trap+0x8 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83870778) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 uvn_get+0x674 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #9 recall_trap+0x8 Process 80051 (syz-executor) thread 0xffff80003c4ab258 (290331) exclusive rrwlock inode r = 0 (0xfffffd8066295450) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 sys_ftruncate+0x1c1 sys/kern/vfs_syscalls.c:2916 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10194 10954K 10968K 166960K 11275 0 pcb 17 12K 12K 166960K 17 0 rtable 191 5K 6K 166960K 270 0 pf 29 16K 16K 166960K 31 0 ifaddr 38 6K 7K 166960K 44 0 ifgroup 46 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 66 36K 36K 166960K 68 0 ioctlops 0 0K 2K 166960K 35 0 iov 0 0K 28K 166960K 16 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1431 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 8 0K 0K 166960K 79 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 125K 166960K 365 0 sigio 0 0K 0K 166960K 4 0 proc 58 99K 163K 166960K 507 0 subproc 63 3K 4K 166960K 135 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 96 0 in_multi 88 6K 7K 166960K 107 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 376 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 215 183K 212K 166960K 4840 0 UVM aobj 11 2K 2K 166960K 11 0 pinsyscall 40 80K 110K 166960K 1397 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 20 0 NDP 10 0K 2K 166960K 27 0 temp 33 8642K 8706K 166960K 4752 0 kqueue 13 20K 30K 166960K 65 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 118 0 115 3 0 3 3 0 8 2 rtentry 176 98 0 11 5 0 5 5 0 8 0 unpcb 144 169 0 154 2 0 2 2 0 8 1 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 144 0 138 7 0 7 7 0 8 6 arp 128 11 0 1 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 1 1 0 1 1 0 8 0 inpcb 328 299 0 289 7 0 7 7 0 8 5 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 144 18 0 3 1 0 1 1 0 8 0 kcovpl 48 15 0 8 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 449 0 43 28 0 28 28 0 8 1 art_table 40 450 0 43 5 0 5 5 0 8 0 art_node 32 98 0 20 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semupl 112 4 0 4 1 0 1 1 0 8 1 semapl 112 42 0 36 1 0 1 1 0 8 0 shmpl 112 8 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1830 0 315 95 0 95 95 0 8 0 ffsino 296 1830 0 315 117 0 117 117 0 8 0 nchpl 144 2307 0 627 63 0 63 63 0 8 0 uvmvnodes 80 1974 0 0 41 0 41 41 0 8 0 vnodes 216 1974 0 0 110 0 110 110 0 8 0 namei 1024 7194 0 7194 2 0 2 2 0 8 2 percpumem 16 49 0 1 1 0 1 1 0 8 0 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 8023 0 8021 3 2 1 2 1 8 0 plimitpl 152 101 0 78 2 0 2 2 0 8 1 sigapl 424 637 0 582 8 0 8 8 0 8 0 knotepl 120 277 0 0 9 0 9 9 0 8 0 kqueuepl 224 77 0 68 1 0 1 1 0 8 0 pipepl 344 137 0 110 3 0 3 3 0 8 0 fdescpl 528 614 0 583 4 0 4 4 0 8 1 filepl 160 2726 0 2535 14 0 14 14 0 8 5 lockfpl 104 78 0 75 1 0 1 1 0 8 0 lockfspl 48 28 0 25 1 0 1 1 0 8 0 sessionpl 144 30 0 15 1 0 1 1 0 8 0 pgrppl 48 50 0 27 1 0 1 1 0 8 0 ucredpl 104 364 0 346 1 0 1 1 0 8 0 zombiepl 144 583 0 582 1 0 1 1 0 8 0 processpl 1248 637 0 582 7 1 6 6 0 8 0 procpl 664 987 0 927 7 0 7 7 0 8 1 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 752 590 0 562 11 0 11 11 0 8 6 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 133 0 0 17 0 17 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 323 0 0 21 0 21 21 0 8 0 bufpl 280 3201 0 113 221 0 221 221 0 8 0 anonpl 32 7400 0 0 60 0 60 60 0 246 0 amapchunkpl 152 15987 0 15573 41 4 37 37 0 158 19 amappl16 200 2790 0 2773 19 5 14 14 0 8 10 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 107 0 97 1 0 1 1 0 8 0 amappl13 176 5 0 4 1 0 1 1 0 8 0 amappl12 168 1224 0 1193 2 0 2 2 0 8 0 amappl11 160 70 0 60 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 27 0 26 1 0 1 1 0 8 0 amappl7 128 95 0 84 1 0 1 1 0 8 0 amappl6 120 193 0 189 1 0 1 1 0 8 0 amappl5 112 117 0 111 1 0 1 1 0 8 0 amappl4 104 340 0 324 1 0 1 1 0 8 0 amappl3 96 2615 0 2518 4 0 4 4 0 8 0 amappl2 88 655 0 599 2 0 2 2 0 8 0 amappl1 80 9049 0 8501 14 0 14 14 0 8 0 amappl 88 4139 0 3992 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 10 0 0 1 0 1 1 0 8 0 uaddrrnd 24 614 0 583 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 614 0 583 1 0 1 1 0 8 0 vmmpekpl 168 6680 0 6641 3 0 3 3 0 8 0 vmmpepl 168 45915 0 44099 105 0 105 105 0 357 14 vmsppl 488 613 0 583 7 1 6 6 0 8 1 rwobjpl 80 17349 0 14589 62 0 62 62 0 8 2 pdppl 4096 1236 0 1166 116 34 82 98 0 8 12 pvpl 32 15110 0 0 122 0 122 122 0 265 0 pmappl 256 613 0 583 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 304 0 37 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833382e6) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83870768) at mtx_enter_try+0x1da mtx_enter(ffffffff83870768) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd80086828e0) at uvm_pageclean+0x28e uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80086828e0) at uvm_pageclean+0x28e sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80086828e0) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8069545980,0,ffff800031c098f8,ffff800031c098dc,0,2,b8ff1af7dadcfe67,2) at uvn_get+0x686 sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff800031c09b10,ffff800031c09b48,ffff800031c09990,ffff800031c09978) at uvm_fault_lower_io+0x2cd sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff800031c09b10,ffff800031c09b48,ffff800031c09a90) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806bbe05d8,200000000000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff800031c09ca0,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff800031c09ca0) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x717ab1ad9d00, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x732caa44b690, count: 12 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x732caa44b690, count: -3