login: uvm_fault(0xfffffd806eed07a8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff8166a6c8 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003c475760 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff8166a6c8 Starting stack trace... panic(ffffffff833cd967) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c4756b0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000147f000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff80003c45d250) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80003c45d250) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c475860) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e21fe70,81,fffffd80097fb4e0,ffff80003c45d250) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bf8ec20,ffff80003c45d250) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bf8ec20,ffff80003c45d250) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bf8ec20,ffff80003c45d250) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806bf8ec20,ffff80003c45d250) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c45d250) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c45d250,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c45d250,ffff80003c475bd0,ffff80003c475b20) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c475bd0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c475bd0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7332c4621bd0, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 49 0 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *441162 66037 0 0 0 1 syz-executor 220714 19279 0 0x14000 0x200 0 reaper savectx() at savectx+0xae end of kernel end trace frame: 0x74018aad53d0, count: 14 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(0xfffffd806eed07a8, 0x0, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x74018aad53d0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000313e5c00 rbx 0 rdx 0 rcx 0xffff80003c40c2b8 rax 0x32 r8 0xffff8000313e5b30 r9 0x1 r10 0xa2849f125e211119 r11 0x7f6af514108cde57 r12 0 r13 0 r14 0xffff80003c40c2b8 r15 0 rip 0xffffffff8304e3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff8000313e5b80 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=441162 pid=66037 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c40ca80,0xffff80003c45d790 process=0xffff80003c4289c0 user=0xffff8000313e0000, vmspace=0xfffffd80623b75e0 estcpu=36, cpticks=5, pctcpu=0.0, user=4, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *66037 441162 41363 0 7 0 syz-executor 66037 248256 41363 0 3 0x4000000 biowait syz-executor 15753 386706 12021 0 2 0 syz-executor 15753 474736 12021 0 2 0x4000000 syz-executor 15753 130386 12021 0 3 0x4000080 fsleep syz-executor 15753 238831 12021 0 3 0x4000080 fsleep syz-executor 44621 332144 56278 0 3 0x80 nanoslp syz-executor 44621 454682 56278 0 3 0x4000080 kqread syz-executor 44621 514849 56278 0 3 0x4000080 fsleep syz-executor 44621 216491 56278 0 3 0x4000080 fsleep syz-executor 72159 329753 75301 0 3 0x80 nanoslp syz-executor 72159 179341 75301 0 3 0x4000080 kqsel syz-executor 72159 157103 75301 0 3 0x4000080 fsleep syz-executor 57783 480988 39906 0 3 0x80 nanoslp syz-executor 57783 459073 39906 0 3 0x4000080 nanoslp syz-executor 57783 251866 39906 0 3 0x4000080 nanoslp syz-executor 27825 403443 0 0 3 0x14200 acct acct 7281 346183 1 0 3 0x100083 ttyin getty 12021 186187 42066 0 3 0x82 nanoslp syz-executor 72197 22578 42066 0 3 0x10000082 nanoslp syz-executor 35207 5989 42066 0 2 0x2 syz-executor 88367 76760 42066 0 3 0x82 nanoslp syz-executor 75301 377981 42066 0 3 0x82 nanoslp syz-executor 41363 70630 42066 0 3 0x82 nanoslp syz-executor 39906 343269 42066 0 3 0x82 nanoslp syz-executor 56278 91932 42066 0 3 0x82 nanoslp syz-executor 42066 348619 17859 0 3 0x82 kqread syz-executor 17859 203839 33592 0 3 0x10008a sigsusp ksh 33592 390090 22165 0 3 0x98 kqread sshd-session 22165 420764 59207 0 3 0x92 kqread sshd-session 59207 197571 1 0 3 0x88 kqread sshd 40413 149947 64978 74 3 0x1100092 bpf pflogd 64978 263455 1 0 3 0x80 sbwait pflogd 95790 172252 39630 73 3 0x1100090 kqread syslogd 39630 296424 1 0 3 0x100082 sbwait syslogd 81489 145466 1 0 3 0x100080 kqread resolvd 83769 194404 40440 77 3 0x100092 kqread dhcpleased 78697 222194 40440 77 3 0x100092 kqread dhcpleased 40440 267491 1 0 3 0x80 kqread dhcpleased 28856 382127 0 0 3 0x14200 bored smr 80869 514340 0 0 2 0x14200 zerothread 75058 129713 0 0 3 0x14200 aiodoned aiodoned 15196 88132 0 0 3 0x14200 syncer update 37866 101846 0 0 3 0x14200 cleaner cleaner 19279 220714 0 0 7 0x14200 reaper 56202 359135 0 0 3 0x14200 pgdaemon pagedaemon 41542 149054 0 0 3 0x14200 bored viomb 82719 98510 0 0 3 0x40014200 acpi0 acpi0 23028 378046 0 0 3 0x40014200 idle1 37672 523145 0 0 3 0x14200 bored softnet1 49104 220713 0 0 3 0x14200 netlock softnet0 71049 393706 0 0 2 0x40014200 systqmp 20468 167764 0 0 3 0x14200 bored systq 86073 377902 0 0 3 0x14200 tmoslp softclockmp 81597 512724 0 0 3 0x40014200 tmoslp softclock 4657 87807 0 0 3 0x40014200 idle0 1 76771 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 66037 (syz-executor) thread 0xffff80003c45d780 (248256) exclusive rrwlock inode r = 0 (0xfffffd8066373338) #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+0xbd sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1732 #8 ufs_create+0x4e sys/ufs/ufs/ufs_vnops.c:147 #9 VOP_CREATE+0xfe sys/kern/vfs_vops.c:103 #10 vn_open+0x34d sys/kern/vfs_vnops.c:116 #11 doopenat+0x35b sys/kern/vfs_syscalls.c:1138 #12 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8066373460) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 vn_open+0x1f1 sys/kern/vfs_vnops.c:107 #8 doopenat+0x35b sys/kern/vfs_syscalls.c:1138 #9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #10 Xsyscall+0x128 Process 15753 (syz-executor) thread 0xffff80003c45cd20 (474736) exclusive rwlock fdlock r = 0 (0xffff800039ff9d50) #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 doopenat+0x18e sys/kern/vfs_syscalls.c:1105 #3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #4 Xsyscall+0x128 Process 35207 (syz-executor) thread 0xffff80002a2bfa08 (5989) exclusive rwlock vmmaplk r = 0 (0xfffffd80623b7ab0) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvmspace_fork+0x12b sys/uvm/uvm_map.c:3741 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd800b0278a0) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3732 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #7 Xsyscall+0x128 Process 19279 (reaper) thread 0xffff8000ffffd4c8 (220714) exclusive rwlock kmmaplk r = 0 (0xffffffff838d0998) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvm_unmap+0x7d sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:792 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1ca sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10204 11058K 11284K 166960K 11563 0 pcb 17 12K 12K 166960K 49 0 rtable 211 8K 8K 166960K 381 0 pf 33 17K 18K 166960K 58 0 ifaddr 37 6K 7K 166960K 52 0 ifgroup 51 2K 2K 166960K 65 0 sysctl 3 1K 9K 166960K 10 0 counters 66 36K 37K 166960K 94 0 ioctlops 0 0K 4K 166960K 1521 0 iov 0 0K 24K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1371 86K 87K 166960K 1552 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 14 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 337 0 sigio 0 0K 0K 166960K 6 0 proc 72 115K 164K 166960K 572 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 11 0 in_multi 78 5K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 3 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 392 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 246 160K 173K 166960K 4981 0 UVM aobj 6 4K 4K 166960K 6 0 pinsyscall 42 84K 108K 166960K 1470 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 17 0 NDP 11 0K 2K 166960K 33 0 temp 43 8655K 8720K 166960K 16065 0 kqueue 14 22K 25K 166960K 60 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 47 0 44 1 0 1 1 0 8 0 rtentry 176 118 0 26 5 0 5 5 0 8 0 unpcb 144 224 0 206 5 1 4 4 0 8 3 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 79 0 72 4 0 4 4 0 8 3 arp 136 20 0 4 1 0 1 1 0 8 0 inpcb 328 240 0 230 4 0 4 4 0 8 3 nd6 152 24 0 6 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 13 0 13 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 1 0 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfstitem 24 31 0 1 1 0 1 1 0 8 0 pfstkey 128 31 0 1 1 0 1 1 0 8 0 pfstate 448 31 0 1 4 0 4 4 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 488 0 119 29 0 29 29 0 8 2 art_table 40 489 0 119 5 0 5 5 0 8 0 art_node 32 118 0 34 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semupl 112 1 0 0 1 0 1 1 0 8 0 semapl 112 11 0 4 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1961 0 448 96 0 96 96 0 8 0 ffsino 296 1961 0 448 118 0 118 118 0 8 0 nchpl 144 2425 0 724 64 0 64 64 0 8 0 rtmask 32 7 0 7 1 0 1 1 0 8 1 vnodes 216 2167 0 0 121 0 121 121 0 8 0 namei 1024 7659 0 7658 3 2 1 2 0 8 0 percpumem 16 62 0 14 1 0 1 1 0 8 0 kstatmem 264 36 0 12 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 10254 0 10253 3 2 1 2 1 8 0 plimitpl 152 122 0 104 1 0 1 1 0 8 0 sigapl 424 648 0 599 7 1 6 7 0 8 0 knotepl 120 546 0 0 17 0 17 17 0 8 0 kqueuepl 224 88 0 75 2 0 2 2 0 8 1 pipepl 344 130 0 101 3 0 3 3 0 8 0 fdescpl 528 631 0 600 3 0 3 3 0 8 0 filepl 160 2834 0 2607 15 2 13 13 0 8 2 lockfpl 104 222 0 220 2 0 2 2 0 8 1 lockfspl 48 43 0 41 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 35 0 18 1 0 1 1 0 8 0 ucredpl 104 304 0 291 1 0 1 1 0 8 0 zombiepl 144 726 0 724 1 0 1 1 0 8 0 processpl 1232 648 0 599 5 0 5 5 0 8 0 procpl 664 1041 0 981 6 0 6 6 0 8 0 sockpl 752 527 0 496 13 3 10 10 0 8 6 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 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 128 0 0 16 0 16 16 0 8 0 mcl2k 2048 27 0 0 4 0 4 4 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 157 0 0 10 0 10 10 0 8 0 bufpl 280 4100 0 127 284 0 284 284 0 8 0 anonpl 32 7586 0 0 62 0 62 62 0 246 0 amapchunkpl 152 15351 0 14858 29 3 26 26 0 158 3 amappl16 200 2549 0 2522 18 3 15 15 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 6 0 6 1 1 0 1 0 8 0 amappl13 176 428 0 427 1 0 1 1 0 8 0 amappl12 168 993 0 951 3 0 3 3 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 49 0 35 1 0 1 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 29 0 27 1 0 1 1 0 8 0 amappl7 128 77 0 76 1 0 1 1 0 8 0 amappl6 120 282 0 269 1 0 1 1 0 8 0 amappl5 112 78 0 67 1 0 1 1 0 8 0 amappl4 104 415 0 386 1 0 1 1 0 8 0 amappl3 96 2567 0 2473 4 1 3 3 0 8 0 amappl2 88 754 0 679 2 0 2 2 0 8 0 amappl1 80 10312 0 9714 16 1 15 15 0 8 0 amappl 88 4209 0 4041 5 0 5 5 0 92 0 uvmvnodes 80 106 0 0 3 0 3 3 0 8 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 631 0 600 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 631 0 600 1 0 1 1 0 8 0 vmmpekpl 168 7125 0 7084 2 0 2 2 0 8 0 vmmpepl 168 48154 0 46244 99 0 99 99 0 357 3 vmsppl 488 630 0 600 6 1 5 5 0 8 1 rwobjpl 80 16705 0 15658 30 2 28 28 0 8 0 pdppl 4096 1269 0 1200 103 32 71 87 0 8 2 pvpl 32 14771 0 0 121 1 120 120 0 265 0 pmappl 256 630 0 600 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 283 0 38 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8384cff0) 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 __mp_lock(ffffffff839f0b00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839f0b00) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a243e00,ffff800000079600) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff839f0b00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839f0b00) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a243f60,ffff80000006b400) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f msleep_nsec(ffff8000ffffd4c8,ffff8000ffffd4c8,0,0,ffff8000ffffd4c8) at msleep_nsec+0x30e sys/kern/kern_synch.c:225 end trace frame: 0x0, count: 5 ddb{0}> trace x86_ipi_db(ffffffff8384cff0) 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 __mp_lock(ffffffff839f0b00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839f0b00) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a243e00,ffff800000079600) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff839f0b00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839f0b00) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a243f60,ffff80000006b400) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f msleep_nsec(ffff8000ffffd4c8,ffff8000ffffd4c8,0,0,ffff8000ffffd4c8) at msleep_nsec+0x30e sys/kern/kern_synch.c:225 end trace frame: 0x0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x74018aad53d0, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x74018aad53d0, count: -1