uvm_fault(0xfffffd806c1f1200, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff827b0788 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff800034bde950 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff827b0788 Starting stack trace... panic(ffffffff833ba739) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff800034bde8a0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001484000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000fffe94e0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffe94e0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff800034bdea50) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f523620,81,fffffd80097fb3a8,ffff8000fffe94e0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c1b0a40,ffff8000fffe94e0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c1b0a40,ffff8000fffe94e0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c1b0a40,ffff8000fffe94e0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c1b0a40,ffff8000fffe94e0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe94e0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe94e0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe94e0,ffff800034bdedc0,ffff800034bded10) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800034bdedc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800034bdedc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7494d3acd240, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 20998 12092 0 0 0 1 syz-executor 322990 6119 0 0x2 0 0 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7d9640faf5e0, 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(0xfffffd806c1f1200, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7d9640faf5e0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c410a00 rbx 0 rdx 0 rcx 0xffff80002a270a78 rax 0x2a r8 0xffff80003c410930 r9 0x1 r10 0x19b59cde0bcd68aa r11 0x91f059f744f50ff9 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81f794c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c410980 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=20998 pid=12092 tcnt=4 stat=onproc flags process=0 proc=0 runpri=71, usrpri=71, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a270548,0xffff8000fffe8030 process=0xffff8000fffef038 user=0xffff80003c40b000, vmspace=0xfffffd806c1f15d0 estcpu=21, cpticks=3, pctcpu=0.2, user=0, sys=2, intr=1 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92513 327083 6939 0 2 0 syz-executor 92513 213213 6939 0 3 0x4000080 fsleep syz-executor 92513 106358 6939 0 3 0x4000080 fsleep syz-executor 92513 197311 6939 0 3 0x4000080 fsleep syz-executor 14546 281718 6119 0 2 0 syz-executor 49189 243391 20418 0 2 0 syz-executor 49189 306050 20418 0 3 0x4000080 fsleep syz-executor *12092 20998 51855 0 7 0 syz-executor 12092 295124 51855 0 3 0x4000000 biowait syz-executor 12092 116870 51855 0 3 0x4000080 fsleep syz-executor 12092 222435 51855 0 3 0x4000080 fsleep syz-executor 14543 518968 0 0 3 0x14200 acct acct 36251 175796 0 0 3 0x14200 bored sosplice 88465 348570 15222 0 2 0x2 syz-executor 20418 67623 15222 0 3 0x82 nanoslp syz-executor 29623 30957 15222 0 3 0x82 nanoslp syz-executor 66048 520157 15222 0 3 0x82 nanoslp syz-executor 6119 322990 15222 0 7 0x2 syz-executor 6939 511907 15222 0 3 0x82 nanoslp syz-executor 96124 453032 15222 0 3 0x82 nanoslp syz-executor 51855 208345 15222 0 3 0x82 nanoslp syz-executor 15222 406513 84054 0 3 0x82 kqread syz-executor 84054 151969 47233 0 3 0x10008a sigsusp ksh 47233 159999 43291 0 3 0x98 kqread sshd-session 43291 510468 97992 0 3 0x92 kqread sshd-session 18713 51742 1 0 3 0x100083 ttyopn getty 97992 451092 1 0 3 0x88 kqread sshd 13754 436505 78932 74 3 0x1100092 bpf pflogd 78932 513544 1 0 3 0x80 sbwait pflogd 14373 472431 97386 73 3 0x1100090 kqread syslogd 97386 64205 1 0 3 0x100082 sbwait syslogd 5894 25194 1 0 3 0x100080 kqread resolvd 35596 102945 92086 77 3 0x100092 kqread dhcpleased 8304 169149 92086 77 3 0x100092 kqread dhcpleased 92086 371963 1 0 3 0x80 kqread dhcpleased 57709 128543 0 0 3 0x14200 bored smr 58660 373326 0 0 3 0x14200 pgzero zerothread 34841 445980 0 0 3 0x14200 aiodoned aiodoned 75903 328883 0 0 3 0x14200 syncer update 94068 181048 0 0 3 0x14200 cleaner cleaner 29647 224897 0 0 2 0x14200 reaper 90297 173773 0 0 3 0x14200 pgdaemon pagedaemon 66376 15321 0 0 3 0x14200 bored viomb 7683 392959 0 0 3 0x40014200 acpi0 acpi0 82553 290962 0 0 3 0x40014200 idle1 17984 507396 0 0 3 0x14200 bored softnet1 27823 397025 0 0 3 0x14200 netlock softnet0 29674 225986 0 0 2 0x14200 systqmp 65046 3762 0 0 3 0x14200 bored systq 74825 131998 0 0 3 0x14200 tmoslp softclockmp 333 164415 0 0 3 0x40014200 tmoslp softclock 5796 488581 0 0 3 0x40014200 idle0 1 441978 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 12092 (syz-executor) thread 0xffff8000fffe8020 (295124) exclusive rrwlock inode r = 0 (0xfffffd8066405900) #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:748 #9 Xsyscall+0x128 Process 88465 (syz-executor) thread 0xffff80002a270fa8 (348570) exclusive rrwlock inode r = 0 (0xfffffd8066405a28) #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 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_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c4f9450) #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 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10217 11102K 11326K 166960K 11674 0 pcb 17 15K 16K 166960K 104 0 rtable 228 8K 8K 166960K 407 0 pf 41 19K 21K 166960K 92 0 ifaddr 41 7K 8K 166960K 66 0 ifgroup 55 2K 2K 166960K 100 0 sysctl 3 1K 9K 166960K 40 0 counters 72 37K 37K 166960K 114 0 ioctlops 0 0K 4K 166960K 1533 0 iov 0 0K 24K 166960K 21 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1438 90K 91K 166960K 1628 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 8 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 236K 166960K 356 0 sigio 0 0K 0K 166960K 1 0 proc 72 115K 164K 166960K 552 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 24 0 in_multi 88 6K 7K 166960K 105 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 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 471 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 243 167K 186K 166960K 5184 0 UVM aobj 8 2K 2K 166960K 9 0 pinsyscall 42 84K 108K 166960K 1502 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 9 0 NDP 13 0K 2K 166960K 42 0 temp 41 8651K 8722K 166960K 11047 0 kqueue 13 20K 28K 166960K 72 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 56 0 52 1 0 1 1 0 8 0 rtentry 176 120 0 20 6 0 6 6 0 8 0 unpcb 144 319 0 301 3 0 3 3 0 8 2 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 85 0 80 4 0 4 4 0 8 3 arp 136 18 0 2 1 0 1 1 0 8 0 inpcb 328 444 0 434 10 0 10 10 0 8 8 nd6 152 25 0 4 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 17 0 14 1 0 1 1 0 8 0 pppxif 1504 5 0 5 1 0 1 1 0 8 1 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 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 37 0 0 1 0 1 1 0 8 0 pfstkey 128 37 0 0 2 0 2 2 0 8 0 pfstate 384 36 0 0 4 0 4 4 0 8 0 pfrule 1344 24 0 18 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 515 0 106 30 0 30 30 0 8 2 art_table 40 517 0 106 5 0 5 5 0 8 0 art_node 32 120 0 29 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semapl 112 6 0 0 1 0 1 1 0 8 0 shmpl 112 6 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1975 0 459 96 0 96 96 0 8 0 ffsino 296 1975 0 459 118 0 118 118 0 8 1 nchpl 144 2471 0 768 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 2248 0 0 125 0 125 125 0 8 0 namei 1024 8522 0 8521 2 1 1 2 0 8 0 percpumem 16 72 0 21 1 0 1 1 0 8 0 kstatmem 264 54 0 26 3 0 3 3 0 8 1 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 8350 0 8349 4 3 1 3 1 8 0 plimitpl 152 99 0 80 1 0 1 1 0 8 0 sigapl 424 663 0 614 7 0 7 7 0 8 1 knotepl 120 540 0 0 17 0 17 17 0 8 0 kqueuepl 224 137 0 127 3 0 3 3 0 8 1 pipepl 344 135 0 106 3 0 3 3 0 8 0 fdescpl 528 645 0 614 3 0 3 3 0 8 0 filepl 160 3558 0 3328 18 0 18 18 0 8 8 lockfpl 104 73 0 71 1 0 1 1 0 8 0 lockfspl 48 36 0 34 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 33 0 16 1 0 1 1 0 8 0 ucredpl 104 344 0 331 1 0 1 1 0 8 0 zombiepl 144 617 0 614 1 0 1 1 0 8 0 processpl 1232 663 0 614 5 1 4 5 0 8 0 procpl 664 1018 0 961 6 0 6 6 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 752 831 0 799 14 2 12 14 0 8 8 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 67 0 0 9 0 9 9 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k 2048 33 0 0 5 0 5 5 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 1134 0 0 71 0 71 71 0 8 0 bufpl 280 4115 0 132 285 0 285 285 0 8 0 anonpl 32 9758 0 0 79 0 79 79 0 246 0 amapchunkpl 152 15567 0 15082 27 0 27 27 0 158 7 amappl16 200 2922 0 2895 17 6 11 16 0 8 8 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 8 0 8 1 1 0 1 0 8 0 amappl13 176 433 0 432 1 0 1 1 0 8 0 amappl12 168 1021 0 980 3 0 3 3 0 8 0 amappl11 160 70 0 70 2 1 1 1 0 8 1 amappl10 152 63 0 49 1 0 1 1 0 8 0 amappl9 144 265 0 265 2 1 1 1 0 8 1 amappl8 136 26 0 24 1 0 1 1 0 8 0 amappl7 128 84 0 83 1 0 1 1 0 8 0 amappl6 120 280 0 267 1 0 1 1 0 8 0 amappl5 112 98 0 88 1 0 1 1 0 8 0 amappl4 104 445 0 416 1 0 1 1 0 8 0 amappl3 96 2501 0 2413 4 1 3 3 0 8 0 amappl2 88 771 0 697 2 0 2 2 0 8 0 amappl1 80 10248 0 9657 15 1 14 15 0 8 0 amappl 88 4381 0 4216 5 0 5 5 0 92 1 uvmvnodes 80 2248 0 0 46 0 46 46 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 8 0 1 1 0 1 1 0 8 0 uaddrrnd 24 645 0 614 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 645 0 614 1 0 1 1 0 8 0 vmmpekpl 168 7057 0 7015 2 0 2 2 0 8 0 vmmpepl 168 49598 0 47699 104 0 104 104 0 357 18 vmsppl 488 644 0 614 5 0 5 5 0 8 1 rwobjpl 80 19160 0 15991 70 1 69 69 0 8 2 pdppl 4096 1298 0 1228 106 34 72 88 0 8 2 pvpl 32 17917 0 0 145 0 145 145 0 265 0 pmappl 256 644 0 614 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 351 0 37 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8378fff0) 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(ffffffff839c9568) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c9568) at __mp_lock+0x192 sys/kern/kern_lock.c:165 scsi_xs_put(fffffd80097f2798) at scsi_xs_put+0x51 scsi_iopool_put sys/scsi/scsi_base.c:270 [inline] scsi_xs_put(fffffd80097f2798) at scsi_xs_put+0x51 scsi_io_put sys/scsi/scsi_base.c:499 [inline] scsi_xs_put(fffffd80097f2798) at scsi_xs_put+0x51 sys/scsi/scsi_base.c:787 scsi_done(fffffd80097f2798) 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(ffff80002a354040,ffff80000007aa80) at intr_handler+0x125 sys/arch/amd64/amd64/intr.c:563 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff839c9568) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c9568) at __mp_lock+0x192 sys/kern/kern_lock.c:165 syscall(ffff80002a354210) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a354210) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x723d3b8a8740, count: 3 ddb{0}> trace x86_ipi_db(ffffffff8378fff0) 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(ffffffff839c9568) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c9568) at __mp_lock+0x192 sys/kern/kern_lock.c:165 scsi_xs_put(fffffd80097f2798) at scsi_xs_put+0x51 scsi_iopool_put sys/scsi/scsi_base.c:270 [inline] scsi_xs_put(fffffd80097f2798) at scsi_xs_put+0x51 scsi_io_put sys/scsi/scsi_base.c:499 [inline] scsi_xs_put(fffffd80097f2798) at scsi_xs_put+0x51 sys/scsi/scsi_base.c:787 scsi_done(fffffd80097f2798) 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(ffff80002a354040,ffff80000007aa80) at intr_handler+0x125 sys/arch/amd64/amd64/intr.c:563 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff839c9568) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c9568) at __mp_lock+0x192 sys/kern/kern_lock.c:165 syscall(ffff80002a354210) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a354210) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x723d3b8a8740, count: -12 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7d9640faf5e0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7d9640faf5e0, count: -1