uvm_fault(0xfffffd800b063000, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff824b1e48 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002e3d93c0 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff824b1e48 Starting stack trace... panic(ffffffff833e005c) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002e3d9310) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000148f000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff800039c0c7e8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800039c0c7e8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002e3d94c0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd800e0e0398,81,fffffd80097fd750,ffff800039c0c7e8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805edd02f8,ffff800039c0c7e8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805edd02f8,ffff800039c0c7e8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805edd02f8,ffff800039c0c7e8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805edd02f8,ffff800039c0c7e8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800039c0c7e8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800039c0c7e8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800039c0c7e8,ffff80002e3d9830,ffff80002e3d9780) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002e3d9830) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002e3d9830) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x796615d731c0, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 91 -1071590968 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND 380109 210 0 0 0 0 syz-executor * 99240 29047 0 0x2 0 1 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0x7943c020d1b0, 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(0xfffffd800b063000, 0x0, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7943c020d1b0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a2fc470 rbx 0 rdx 0 rcx 0xffff8000ffffcd00 rax 0x3c r8 0xffff80002a2fc3a0 r9 0x1 r10 0x956e38102f5a5ce8 r11 0x28f824dd833e339a r12 0 r13 0 r14 0xffff8000ffffcd00 r15 0 rip 0xffffffff810de3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80002a2fc3f0 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=99240 pid=29047 tcnt=1 stat=onproc flags process=2 proc=0 runpri=50, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a272a70,0xffff8000ffffda08 process=0xffff8000ffff2690 user=0xffff80002a2f7000, vmspace=0xfffffd806ec941f8 estcpu=36, cpticks=64, pctcpu=0.28, user=2, sys=45, intr=16 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 210 380109 93610 0 7 0 syz-executor 210 341511 93610 0 3 0x4000080 fsleep syz-executor 210 74131 93610 0 2 0x4000000 syz-executor 31613 15572 46933 0 2 0x2 arp 90367 332418 3772 0 2 0 syz-executor 90367 443712 3772 0 3 0x4000080 fsleep syz-executor 46933 504020 33219 0 3 0x10008a sigsusp sh 49673 307291 84960 -1 3 0x90 nanoslp syz-executor 49673 106274 84960 -1 3 0x4000090 fsleep syz-executor 49673 356880 84960 -1 3 0x4000090 fsleep syz-executor 88897 377909 29047 -1 2 0x10 syz-executor 88897 324484 29047 -1 3 0x4000090 fsleep syz-executor 88897 72814 29047 -1 3 0x4000090 fsleep syz-executor 50349 65972 35586 0 2 0 syz-executor 50349 483060 35586 0 2 0x4000000 syz-executor 50349 344969 35586 0 3 0x4000000 inode syz-executor 50349 428452 35586 0 3 0x4000000 inode syz-executor 50349 330239 35586 0 3 0x4000000 inode syz-executor 33219 510727 46098 0 3 0x82 wait syz-executor 90476 469632 51894 0 3 0x80 nanoslp syz-executor 90476 194699 51894 0 3 0x4000080 kqsel syz-executor 90476 429711 51894 0 3 0x4000080 fsleep syz-executor 61261 222516 1 0 3 0x80 nanoslp init 35586 207982 46098 0 3 0x82 nanoslp syz-executor 3772 523297 46098 0 3 0x82 nanoslp syz-executor 48584 493527 46098 0 3 0x82 nanoslp syz-executor 84960 360608 46098 0 3 0x82 nanoslp syz-executor 51894 213900 46098 0 3 0x82 nanoslp syz-executor 93610 15985 46098 0 3 0x82 nanoslp syz-executor *29047 99240 46098 0 7 0x2 syz-executor 46098 321389 84423 0 3 0x82 kqread syz-executor 84423 352695 53252 0 3 0x10008a sigsusp ksh 53252 119910 94312 0 3 0x98 kqread sshd-session 94312 163134 66441 0 3 0x92 kqread sshd-session 66441 277579 1 0 3 0x88 kqread sshd 8765 98976 20103 74 3 0x1100092 bpf pflogd 20103 323263 1 0 3 0x80 sbwait pflogd 90279 48895 51197 73 3 0x1100090 kqread syslogd 51197 298789 1 0 3 0x100082 sbwait syslogd 19529 197178 1 0 3 0x100080 kqread resolvd 53158 266244 71097 77 3 0x100092 kqread dhcpleased 22857 239564 71097 77 3 0x100092 kqread dhcpleased 71097 366605 1 0 3 0x80 kqread dhcpleased 8886 351032 0 0 3 0x14200 bored smr 27602 10574 0 0 2 0x14200 zerothread 49659 281893 0 0 3 0x14200 aiodoned aiodoned 27604 241698 0 0 3 0x14200 syncer update 30303 217793 0 0 3 0x14200 cleaner cleaner 12429 290346 0 0 3 0x14200 reaper reaper 25146 73398 0 0 3 0x14200 pgdaemon pagedaemon 52072 138347 0 0 3 0x14200 bored viomb 90388 3403 0 0 3 0x40014200 acpi0 acpi0 31558 226260 0 0 3 0x40014200 idle1 78300 120688 0 0 3 0x14200 bored softnet1 50116 116207 0 0 3 0x14200 netlock softnet0 92875 139129 0 0 2 0x40014200 systqmp 76874 388891 0 0 3 0x14200 bored systq 45553 306917 0 0 3 0x14200 tmoslp softclockmp 31542 173092 0 0 3 0x40014200 tmoslp softclock 32601 146445 0 0 3 0x40014200 idle0 1 130045 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 210 (syz-executor) thread 0xffff800039c0d248 (380109) exclusive rwlock uobjlk r = 0 (0xfffffd806cd52478) #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 uvm_fault+0x1e5 sys/uvm/uvm_fault.c:655 #3 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #4 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd805d9b48c8) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1902 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #7 recall_trap+0x8 Process 50349 (syz-executor) thread 0xffff8000fffee2b0 (483060) exclusive rrwlock inode r = 0 (0xfffffd806cc40d90) #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 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 50349 (syz-executor) thread 0xffff8000fffefca0 (344969) exclusive rrwlock inode r = 0 (0xfffffd80770c0a28) #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 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 sys_truncate+0x84 sys/kern/vfs_syscalls.c:2884 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 11228K 11473K 166960K 12433 0 pcb 17 15K 17K 166960K 198 0 rtable 224 9K 10K 166960K 626 0 pf 35 17K 25K 166960K 122 0 ifaddr 38 6K 8K 166960K 84 0 ifgroup 51 2K 2K 166960K 133 0 sysctl 2 1K 9K 166960K 12 0 counters 66 36K 37K 166960K 168 0 ioctlops 0 0K 8K 166960K 1671 0 iov 0 0K 16K 166960K 29 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1363 86K 86K 166960K 2062 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 18 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 93K 166960K 679 0 sigio 0 0K 0K 166960K 7 0 proc 64 99K 180K 166960K 611 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 137 0 in_multi 78 5K 7K 166960K 117 0 ether_multi 1 0K 0K 166960K 3 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 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 480 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 248 157K 172K 166960K 7983 0 UVM aobj 9 6K 6K 166960K 11 0 pinsyscall 43 86K 103K 166960K 1837 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 36 0 NDP 11 0K 1K 166960K 57 0 temp 144 8681K 8928K 166960K 25956 0 kqueue 15 24K 30K 166960K 121 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 65 0 62 1 0 1 1 0 8 0 rtentry 176 196 0 101 6 0 6 6 0 8 0 unpcb 144 415 0 397 4 0 4 4 0 8 3 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 276 0 206 9 2 7 7 0 8 0 arp 136 21 0 5 1 0 1 1 0 8 0 inpcb 328 835 0 759 10 3 7 10 0 8 0 nd6 152 26 0 6 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 43 0 43 1 0 1 1 0 8 1 pppxif 1504 3 0 3 2 2 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 9 0 4 1 0 1 1 0 482 0 pffrnode 88 7 0 2 1 0 1 1 0 8 0 pffrent 40 17 0 12 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 pfrktable 1344 2 0 2 2 1 1 1 0 8 1 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfstitem 24 89 0 10 1 0 1 1 0 8 0 pfstkey 128 93 0 14 3 0 3 3 0 8 0 pfstate 448 90 0 12 9 0 9 9 0 8 0 pfrule 1344 25 0 20 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 566 0 188 31 0 31 31 0 8 5 art_table 40 568 0 188 6 0 6 6 0 8 0 art_node 32 196 0 110 2 1 1 2 0 8 0 sysvmsgpl 40 6 0 3 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 16 0 6 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2822 0 1315 96 0 96 96 0 8 0 ffsino 296 2822 0 1315 118 0 118 118 0 8 0 nchpl 144 3710 0 2006 64 0 64 64 0 8 0 rtmask 32 14 0 14 1 0 1 1 0 8 1 vnodes 216 3190 0 0 178 0 178 178 0 8 0 namei 1024 12808 0 12807 1 0 1 1 0 8 0 percpumem 16 99 0 51 1 0 1 1 0 8 0 vcpupl 3968 2 0 0 1 0 1 1 0 8 0 vmpool 840 4 0 2 3 2 1 2 0 8 0 kstatmem 264 84 0 60 3 0 3 3 0 8 1 scsiplug 72 2 0 2 2 1 1 1 0 8 1 scxspl 216 14191 0 14191 9 8 1 8 1 8 1 plimitpl 152 119 0 102 1 0 1 1 0 8 0 sigapl 424 990 0 941 7 1 6 7 0 8 0 knotepl 120 531 0 0 17 0 17 17 0 8 0 kqueuepl 224 430 0 383 9 4 5 5 0 8 2 pipepl 344 231 0 203 6 3 3 6 0 8 0 fdescpl 528 974 0 941 3 0 3 3 0 8 0 filepl 160 6447 0 6057 17 0 17 17 0 8 0 lockfpl 104 234 0 231 2 0 2 2 0 8 1 lockfspl 48 107 0 104 1 0 1 1 0 8 0 sessionpl 144 26 0 18 1 0 1 1 0 8 0 pgrppl 48 40 0 24 1 0 1 1 0 8 0 ucredpl 104 1183 0 1168 1 0 1 1 0 8 0 zombiepl 144 942 0 941 1 0 1 1 0 8 0 processpl 1232 990 0 941 5 1 4 5 0 8 0 procpl 664 1941 0 1879 6 0 6 6 0 8 0 sosppl 176 3 0 3 2 1 1 1 0 8 1 sockpl 752 1326 0 1228 14 3 11 14 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 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 25 0 0 4 0 4 4 0 8 0 mtagpl 96 135 0 0 4 0 4 4 0 8 0 mbufpl 256 312 0 0 20 0 20 20 0 8 0 bufpl 280 4978 0 134 346 0 346 346 0 8 0 anonpl 32 7984 0 0 65 0 65 65 0 246 0 amapchunkpl 152 26832 0 26285 35 2 33 35 0 158 11 amappl16 200 3535 0 3488 22 6 16 16 0 8 11 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 176 437 0 435 1 0 1 1 0 8 0 amappl12 168 1339 0 1298 3 0 3 3 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 84 0 70 1 0 1 1 0 8 0 amappl9 144 246 0 245 1 0 1 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 83 0 80 1 0 1 1 0 8 0 amappl6 120 293 0 278 1 0 1 1 0 8 0 amappl5 112 78 0 68 1 0 1 1 0 8 0 amappl4 104 447 0 416 1 0 1 1 0 8 0 amappl3 96 4368 0 4275 4 1 3 3 0 8 0 amappl2 88 1099 0 1025 2 0 2 2 0 8 0 amappl1 80 11836 0 11249 15 0 15 15 0 8 0 amappl 88 7151 0 6977 5 0 5 5 0 92 0 uvmvnodes 80 119 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 9 0 9 2 1 1 1 0 8 1 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 10 0 2 1 0 1 1 0 8 0 uaddrrnd 24 974 0 941 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 974 0 941 1 0 1 1 0 8 0 vmmpekpl 168 9894 0 9847 3 0 3 3 0 8 0 vmmpepl 168 68538 0 66580 101 4 97 97 0 357 5 vmsppl 488 973 0 941 6 1 5 5 0 8 0 rwobjpl 80 21131 0 20065 29 2 27 27 0 8 2 pdppl 4096 1964 0 1888 104 28 76 86 0 8 0 pvpl 32 15643 0 0 127 1 126 126 0 265 0 pmappl 256 977 0 943 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 305 0 33 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83867ff0) 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(ffffffff8397eee8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8397eee8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 scsi_xs_put(fffffd806b5da450) at scsi_xs_put+0x51 scsi_iopool_put sys/scsi/scsi_base.c:270 [inline] scsi_xs_put(fffffd806b5da450) at scsi_xs_put+0x51 scsi_io_put sys/scsi/scsi_base.c:499 [inline] scsi_xs_put(fffffd806b5da450) at scsi_xs_put+0x51 sys/scsi/scsi_base.c:787 scsi_done(fffffd806b5da450) at scsi_done+0x40 sys/scsi/scsi_base.c:1496 vioscsi_vq_done(ffff8000000a4268) at vioscsi_vq_done+0xe1 sys/dev/pv/vioscsi.c:-1 intr_handler(ffff80003c431430,ffff80000006b400) at intr_handler+0x125 sys/arch/amd64/amd64/intr.c:564 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff8397eee8) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8397eee8) at __mp_lock+0x199 sys/kern/kern_lock.c:165 uvm_fault(fffffd805d9b47c8,9d9774a9000,0,2) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:656 upageflttrap(ffff80003c4317d0,9d9774a9000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4317d0) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x78e17d71ba50, count: 1 ddb{0}> trace x86_ipi_db(ffffffff83867ff0) 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(ffffffff8397eee8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8397eee8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 scsi_xs_put(fffffd806b5da450) at scsi_xs_put+0x51 scsi_iopool_put sys/scsi/scsi_base.c:270 [inline] scsi_xs_put(fffffd806b5da450) at scsi_xs_put+0x51 scsi_io_put sys/scsi/scsi_base.c:499 [inline] scsi_xs_put(fffffd806b5da450) at scsi_xs_put+0x51 sys/scsi/scsi_base.c:787 scsi_done(fffffd806b5da450) at scsi_done+0x40 sys/scsi/scsi_base.c:1496 vioscsi_vq_done(ffff8000000a4268) at vioscsi_vq_done+0xe1 sys/dev/pv/vioscsi.c:-1 intr_handler(ffff80003c431430,ffff80000006b400) at intr_handler+0x125 sys/arch/amd64/amd64/intr.c:564 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff8397eee8) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8397eee8) at __mp_lock+0x199 sys/kern/kern_lock.c:165 uvm_fault(fffffd805d9b47c8,9d9774a9000,0,2) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:656 upageflttrap(ffff80003c4317d0,9d9774a9000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4317d0) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x78e17d71ba50, count: -14 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x7943c020d1b0, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7943c020d1b0, count: -1