uvm_fault(0xffffffff838fce98, 0xffff800025b94dd6, 0, 2) -> d fatal page fault in supervisor mode trap type 6 code 2 rip ffffffff814817a9 cs 8 rflags 10206 cr2 ffff800025b94dd6 cpl 0 rsp ffff80003c4253b8 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=2, pc=ffffffff814817a9 Starting stack trace... panic(ffffffff833a390f) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c425300) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b memset() at memset+0x49 ffs_write(ffff80003c4256a0) at ffs_write+0xb9a sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd80602cb470,ffff80003c425750,3,fffffd80097fb6e8) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800035bf87f0,fffffd80602cb470,fffffd80097fb6e8,ffff80003c425820,ffff80003c425800) at ktrwriteraw+0x1be sys/kern/kern_ktrace.c:691 ktrsysret(ffff800035bf87f0,36,5,ffff80003c4258f0) at ktrsysret+0x192 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff800035bf87f0,36,5,ffff80003c4258f0) at ktrsysret+0x192 sys/kern/kern_ktrace.c:209 syscall(ffff80003c4259a0) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80003c4259a0) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:767 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x365281e0550, count: 247 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 83 -1480541136 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *108002 99962 60929 0x4000010 0 1 syz-executor 86437 62952 0 0 0 0 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0x7db7fb645ca0, 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xffffffff838fce98, 0xffff800025b94dd6, 0, 2) -> d ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7db7fb645ca0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c431510 rbx 0 rdx 0 rcx 0xffff8000fffeea78 rax 0x3c r8 0xffff80003c431440 r9 0x1 r10 0xc66d6f7bbb9c5254 r11 0x5cd2e0ca034473b1 r12 0 r13 0 r14 0xffff8000fffeea78 r15 0 rip 0xffffffff81b543ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003c431490 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=108002 pid=99962 tcnt=2 stat=onproc flags process=4000010 proc=0 runpri=86, usrpri=86, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffeed10,0xffff800035bf94f8 process=0xffff80003c4d26a8 user=0xffff80003c42c000, vmspace=0xfffffd800b027000 estcpu=36, cpticks=2, pctcpu=0.0, user=1, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 58333 327867 47282 0 2 0 syz-executor 58333 5961 47282 0 3 0x4000000 smrbar syz-executor 64744 308804 42111 0 2 0 syz-executor 64744 491788 42111 0 3 0x4000080 fsleep syz-executor 64744 226714 42111 0 3 0x4000080 fsleep syz-executor 64744 382125 42111 0 3 0x4000080 fsleep syz-executor 96599 16932 66066 0 2 0 syz-executor 96599 430925 66066 0 3 0x4000080 fsleep syz-executor 96599 117532 66066 0 3 0x4000080 fsleep syz-executor *99962 108002 71382 60929 7 0x4000010 syz-executor 99962 169109 71382 60929 3 0x4000090 fsleep syz-executor 62952 86437 75606 0 7 0 syz-executor 62952 353718 75606 0 3 0x4000080 ttyout syz-executor 62952 498051 75606 0 3 0x4000080 ttyout syz-executor 62952 467531 75606 0 3 0x4000080 lockf syz-executor 71910 129632 37005 0 2 0 syz-executor 71910 18914 37005 0 3 0x4000080 fsleep syz-executor 71910 217416 37005 0 3 0x4000080 fsleep syz-executor 71910 63255 37005 0 3 0x4000080 fsleep syz-executor 36272 193871 10873 0 2 0 syz-executor 36272 75540 10873 0 3 0x4000001 sbar syz-executor 73774 34620 0 0 3 0x14200 acct acct 47282 162718 7102 0 3 0x82 nanoslp syz-executor 20192 105506 0 0 3 0x14280 nfsidl nfsio 50196 443087 0 0 3 0x14280 nfsidl nfsio 70851 212080 0 0 3 0x14280 nfsidl nfsio 62510 152168 0 0 3 0x14280 nfsidl nfsio 41647 199942 0 0 3 0x14280 nfsidl nfsio 1782 129379 0 0 3 0x14280 nfsidl nfsio 12091 80138 0 0 3 0x14280 nfsidl nfsio 43047 72245 0 0 3 0x14280 nfsidl nfsio 85070 100774 0 0 3 0x14280 nfsidl nfsio 38184 65840 0 0 3 0x14280 nfsidl nfsio 67196 230097 0 0 3 0x14280 nfsidl nfsio 68419 4080 0 0 3 0x14280 nfsidl nfsio 69682 234409 0 0 3 0x14280 nfsidl nfsio 40594 121702 0 0 3 0x14280 nfsidl nfsio 99855 359845 0 0 3 0x14280 nfsidl nfsio 16121 523180 0 0 3 0x14280 nfsidl nfsio 1857 224621 0 0 3 0x14280 nfsidl nfsio 34419 315848 0 0 3 0x14280 nfsidl nfsio 31687 511747 0 0 3 0x14280 nfsidl nfsio 60537 442124 0 0 3 0x14280 nfsidl nfsio 35915 309391 0 0 3 0x14200 bored sosplice 10873 181544 7102 0 3 0x82 nanoslp syz-executor 71382 64310 7102 0 3 0x82 nanoslp syz-executor 37005 198539 7102 0 3 0x82 nanoslp syz-executor 75606 409448 7102 0 3 0x82 nanoslp syz-executor 87648 466398 7102 0 2 0x2 syz-executor 66066 408430 7102 0 3 0x82 nanoslp syz-executor 42111 471701 7102 0 3 0x82 nanoslp syz-executor 7102 453917 82731 0 3 0x82 kqread syz-executor 82731 488155 96178 0 3 0x10008a sigsusp ksh 96178 359840 98527 0 3 0x98 kqread sshd-session 98527 113097 58974 0 3 0x92 kqread sshd-session 38216 450055 1 0 3 0x100083 ttyin getty 58974 273171 1 0 3 0x88 kqread sshd 50878 49303 89802 74 3 0x1100092 bpf pflogd 89802 83841 1 0 3 0x80 sbwait pflogd 82540 491740 65969 73 3 0x1100090 kqread syslogd 65969 205475 1 0 3 0x100082 sbwait syslogd 27743 409717 1 0 3 0x100080 kqread resolvd 54379 442137 28306 77 3 0x100092 kqread dhcpleased 75437 429236 28306 77 3 0x100092 kqread dhcpleased 28306 10081 1 0 3 0x80 kqread dhcpleased 23429 479829 0 0 3 0x14200 bored smr 21779 203655 0 0 2 0x14200 zerothread 52932 233685 0 0 3 0x14200 aiodoned aiodoned 25050 517255 0 0 3 0x14200 syncer update 24622 330063 0 0 3 0x14200 cleaner cleaner 5968 177224 0 0 3 0x14200 reaper reaper 18387 325302 0 0 3 0x14200 pgdaemon pagedaemon 70728 328039 0 0 3 0x14200 bored viomb 99285 408690 0 0 3 0x40014200 acpi0 acpi0 20896 281828 0 0 3 0x40014200 idle1 34487 206058 0 0 3 0x14200 bored softnet1 36606 493657 0 0 3 0x14200 netlock softnet0 84291 138146 0 0 3 0x14200 smrbar systqmp 87531 100840 0 0 3 0x14200 bored systq 47197 514111 0 0 3 0x14200 tmoslp softclockmp 2245 41023 0 0 3 0x40014200 tmoslp softclock 58899 215234 0 0 3 0x40014200 idle0 1 441574 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 58333 (syz-executor) thread 0xffff800038406d28 (5961) exclusive rwlock clonelk r = 0 (0xffffffff8385ea68) #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 if_clone_destroy+0x67 sys/net/if.c:-1 #3 ifioctl+0x59d sys/net/if.c:2092 #4 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #6 Xsyscall+0x128 Process 36272 (syz-executor) thread 0xffff800035bf87f0 (75540) exclusive rrwlock inode r = 0 (0xfffffd806e0c1d68) #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 vget+0x2a2 sys/kern/vfs_subr.c:693 #6 ktrwriteraw+0x175 sys/kern/kern_ktrace.c:688 #7 ktrsysret+0x192 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] #7 ktrsysret+0x192 sys/kern/kern_ktrace.c:209 #8 syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] #8 syscall+0xa50 sys/arch/amd64/amd64/trap.c:767 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838f9630) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] #1 ktrsysret+0xde sys/kern/kern_ktrace.c:209 #2 syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] #2 syscall+0xa50 sys/arch/amd64/amd64/trap.c:767 #3 Xsyscall+0x128 Process 87648 (syz-executor) thread 0xffff80002a272010 (466398) exclusive rrwlock inode r = 0 (0xfffffd807e43e480) #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 vget+0x2a2 sys/kern/vfs_subr.c:693 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8066fd4ec0) #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 vget+0x2a2 sys/kern/vfs_subr.c:693 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #13 Xsyscall+0x128 Process 84291 (systqmp) thread 0xffff8000ffffea60 (138146) shared rwlock systqmp r = 0 (0xffffffff83807ec8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 11088K 11416K 166960K 12346 0 pcb 18 15K 16K 166960K 201 0 rtable 186 8K 9K 166960K 569 0 pf 38 18K 19K 166960K 109 0 ifaddr 40 7K 8K 166960K 78 0 ifgroup 55 2K 2K 166960K 117 0 sysctl 3 1K 9K 166960K 79 0 counters 68 36K 37K 166960K 140 0 ioctlops 0 0K 4K 166960K 1668 0 iov 0 0K 28K 166960K 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1359 85K 86K 166960K 2048 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 23 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 865 0 sigio 1 0K 0K 166960K 23 0 proc 72 115K 148K 166960K 641 0 subproc 72 4K 4K 166960K 84 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 205 0 in_multi 83 6K 7K 166960K 145 0 ether_multi 1 0K 0K 166960K 9 0 mrt 1 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 488 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 249 168K 182K 166960K 9649 0 UVM aobj 26 2K 2K 166960K 30 0 pinsyscall 42 84K 99K 166960K 1984 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 73 0 NDP 12 0K 2K 166960K 53 0 temp 144 8653K 8733K 166960K 41915 0 kqueue 16 26K 29K 166960K 178 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 120 105 0 102 1 0 1 1 0 8 0 rtentry 176 183 0 108 5 0 5 5 0 8 0 unpcb 144 568 0 547 6 1 5 5 0 8 4 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 311 0 305 11 7 4 7 0 8 3 arp 136 14 0 3 1 0 1 1 0 8 0 inpcb 328 1097 0 1083 15 5 10 10 0 8 8 nd6 144 21 0 6 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 29 0 29 1 0 1 1 0 8 1 pppxif 1504 2 0 2 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 5 0 1 1 0 1 1 0 482 0 pffrnode 88 5 0 1 1 0 1 1 0 8 0 pffrent 40 13 0 9 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 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 76 0 19 1 0 1 1 0 8 0 pfstkey 128 144 0 87 2 0 2 2 0 8 0 pfstate 384 109 0 53 6 0 6 6 0 8 0 pfrule 1344 31 0 26 2 1 1 2 0 8 0 rttmr 136 3 0 3 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 565 0 183 29 0 29 29 0 8 3 art_table 40 567 0 183 5 0 5 5 0 8 0 art_node 32 118 0 41 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 27 0 4 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 3045 0 1535 95 0 95 95 0 8 0 ffsino 296 3045 0 1535 117 0 117 117 0 8 0 nchpl 144 4256 0 2559 64 0 64 64 0 8 0 rtmask 32 5 0 5 2 1 1 1 0 8 1 uvmvnodes 80 3440 0 0 71 0 71 71 0 8 0 vnodes 216 3440 0 0 192 0 192 192 0 8 0 namei 1024 14122 0 14122 2 1 1 2 0 8 1 percpumem 16 85 0 36 1 0 1 1 0 8 0 kstatmem 264 74 0 46 3 0 3 3 0 8 1 scsiplug 72 7 0 7 1 0 1 1 0 8 1 scxspl 216 18117 0 18117 11 10 1 8 1 8 1 plimitpl 152 133 0 114 1 0 1 1 0 8 0 sigapl 424 1186 0 1117 8 0 8 8 0 8 0 knotepl 120 566 0 0 18 0 18 18 0 8 0 kqueuepl 224 335 0 323 4 1 3 3 0 8 2 pipepl 344 285 0 256 9 0 9 9 0 8 6 fdescpl 528 1147 0 1116 3 0 3 3 0 8 0 filepl 160 7200 0 6964 26 8 18 20 0 8 7 lockfpl 104 432 0 425 2 1 1 2 0 8 0 lockfspl 48 158 0 154 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 40 0 23 1 0 1 1 0 8 0 ucredpl 104 1293 0 1279 1 0 1 1 0 8 0 zombiepl 144 1117 0 1117 1 0 1 1 0 8 1 processpl 1232 1186 0 1117 6 0 6 6 0 8 0 procpl 664 2491 0 2408 8 0 8 8 0 8 0 sosppl 168 12 0 12 2 1 1 1 0 8 1 sockpl 752 1796 0 1758 24 10 14 15 0 8 10 mcl64k 65536 31 0 0 4 0 4 4 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 127 0 0 16 0 16 16 0 8 0 mcl2k 2048 39 0 0 5 0 5 5 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 315 0 0 20 0 20 20 0 8 0 bufpl 280 6841 0 698 439 0 439 439 0 8 0 anonpl 32 10065 0 0 81 0 81 81 0 246 0 amapchunkpl 152 32315 0 31796 34 6 28 29 0 158 6 amappl16 200 3371 0 3322 31 18 13 23 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 116 0 104 1 0 1 1 0 8 0 amappl13 176 4 0 4 3 2 1 1 0 8 1 amappl12 168 1813 0 1782 3 1 2 2 0 8 0 amappl11 160 49 0 35 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 335 0 335 1 1 0 1 0 8 0 amappl8 136 25 0 23 1 0 1 1 0 8 0 amappl7 128 108 0 96 1 0 1 1 0 8 0 amappl6 120 191 0 187 1 0 1 1 0 8 0 amappl5 112 129 0 119 1 0 1 1 0 8 0 amappl4 104 316 0 296 1 0 1 1 0 8 0 amappl3 96 5583 0 5482 3 0 3 3 0 8 0 amappl2 88 1392 0 1312 2 0 2 2 0 8 0 amappl1 80 11466 0 10864 15 0 15 15 0 8 0 amappl 88 8829 0 8653 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 7 0 7 2 2 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 7 0 7 2 2 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 29 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1147 0 1116 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1147 0 1116 1 0 1 1 0 8 0 vmmpekpl 168 11152 0 11108 4 1 3 3 0 8 0 vmmpepl 168 77120 0 75096 116 13 103 108 0 357 7 vmsppl 488 1146 0 1116 6 1 5 5 0 8 1 rwobjpl 80 25386 0 20954 91 0 91 91 0 8 0 pdppl 4096 2302 0 2232 98 26 72 84 0 8 2 pvpl 32 17984 0 0 147 2 145 146 0 265 0 pmappl 256 1146 0 1116 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 294 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(ffffffff83799ff0) 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(ffffffff838f9428) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f9428) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7d4810cbcb20, count: 4 ddb{0}> trace x86_ipi_db(ffffffff83799ff0) 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(ffffffff838f9428) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f9428) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7d4810cbcb20, count: -11 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x7db7fb645ca0, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7db7fb645ca0, count: -1