uvm_fault(0xfffffd800b0631e8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81930f58 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff8000333dd570 gsbase 0xffff8000299ddff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81930f58 Starting stack trace... panic(ffffffff833e40cf) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff8000333dd4c0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000162c000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000fffe7780) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffe7780) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000333dd670) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80631fd028,81,fffffd80097fd4e0,ffff8000fffe7780) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805d884028,ffff8000fffe7780) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805d884028,ffff8000fffe7780) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805d884028,ffff8000fffe7780) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805d884028,ffff8000fffe7780) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe7780) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe7780,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe7780,ffff8000333dd9e0,ffff8000333dd930) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000333dd9e0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333dd9e0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e07c6629930, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 83 1167998384 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *294183 74829 0 0 0 1 syz-executor 173076 44559 0 0x2 0x1 0 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0x7588fcaf3130, 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(0xfffffd800b0631e8, 0x0, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7588fcaf3130, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a38ede0 rbx 0 rdx 0 rcx 0xffff800031fd0550 rax 0x3b r8 0xffff80002a38ed10 r9 0x1 r10 0x961df6ec6566048a r11 0xa6117957783e25e1 r12 0 r13 0 r14 0xffff800031fd0550 r15 0 rip 0xffffffff81b043ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80002a38ed60 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=294183 pid=74829 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=0xffff80002a2754d8,0xffff800031fd0030 process=0xffff8000fffeb9e0 user=0xffff80002a389000, vmspace=0xfffffd800b0637a0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 37445 238644 7868 0 2 0 syz-executor 37445 311599 7868 0 3 0x4000080 fsleep syz-executor 30322 334461 39123 0 2 0 syz-executor 30322 510609 39123 0 3 0x4000080 fsleep syz-executor 30322 334104 39123 0 3 0x4000080 fsleep syz-executor 5524 166452 45646 0 2 0 syz-executor 5524 466430 45646 0 3 0x4000080 pipewr syz-executor *74829 294183 74750 0 7 0 syz-executor 74829 134176 74750 0 3 0x4000080 fsleep syz-executor 43989 98796 57712 0 3 0x80 nanoslp syz-executor 43989 316881 57712 0 3 0x4000080 kqsel syz-executor 43989 45429 57712 0 3 0x4000080 fsleep syz-executor 97445 468394 96161 0 3 0x80 nanoslp syz-executor 97445 4038 96161 0 3 0x4000080 fsleep syz-executor 97445 503511 96161 0 3 0x4000080 sbwait syz-executor 97445 216657 96161 0 3 0x4000080 fsleep syz-executor 98649 100225 75202 0 4 0x82000 syz-executor 98649 277407 75202 0 2 0x4082000 syz-executor 98649 100988 75202 0 3 0x4002000 suspend syz-executor 96161 291759 44559 0 3 0x82 nanoslp syz-executor 16408 212922 0 0 3 0x14200 acct acct 28077 234979 1 0 3 0x100083 ttyopn getty 39123 262159 44559 0 3 0x82 nanoslp syz-executor 76852 172225 44559 0 3 0x82 nanoslp syz-executor 74750 22594 44559 0 3 0x82 nanoslp syz-executor 75202 324002 44559 0 3 0x82 nanoslp syz-executor 45646 326347 44559 0 3 0x82 nanoslp syz-executor 7868 264505 44559 0 3 0x82 nanoslp syz-executor 57712 130282 44559 0 3 0x82 nanoslp syz-executor 44559 173076 62344 0 7 0x3 syz-executor 62344 8952 16834 0 3 0x10008a sigsusp ksh 16834 352992 25171 0 3 0x98 kqread sshd-session 25171 239700 32766 0 3 0x92 kqread sshd-session 32766 295638 1 0 3 0x88 kqread sshd 20743 198094 14838 74 3 0x1100092 bpf pflogd 14838 81099 1 0 3 0x80 sbwait pflogd 2905 337496 25916 73 3 0x1100090 kqread syslogd 25916 77717 1 0 3 0x100082 sbwait syslogd 16235 311204 1 0 3 0x100080 kqread resolvd 22581 386353 46482 77 3 0x100092 kqread dhcpleased 55780 61951 46482 77 3 0x100092 kqread dhcpleased 46482 264550 1 0 3 0x80 kqread dhcpleased 86988 43575 0 0 3 0x14200 bored smr 57843 269629 0 0 3 0x14200 pgzero zerothread 3105 360937 0 0 3 0x14200 aiodoned aiodoned 38222 515382 0 0 3 0x14200 syncer update 28234 38193 0 0 3 0x14200 cleaner cleaner 3322 517660 0 0 3 0x14200 reaper reaper 28007 66191 0 0 3 0x14200 pgdaemon pagedaemon 68471 309457 0 0 3 0x14200 bored viomb 24737 267955 0 0 3 0x40014200 acpi0 acpi0 28233 63176 0 0 3 0x40014200 idle1 7994 245508 0 0 3 0x14200 bored softnet1 32688 133358 0 0 2 0x14200 softnet0 24240 103895 0 0 2 0x40014200 systqmp 13773 28056 0 0 3 0x14200 bored systq 37894 481512 0 0 3 0x14200 tmoslp softclockmp 34523 410537 0 0 3 0x40014200 tmoslp softclock 9327 12915 0 0 3 0x40014200 idle0 1 369714 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 98649 (syz-executor) thread 0xffff8000fffe6558 (277407) exclusive rrwlock inode r = 0 (0xfffffd8070e63218) #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 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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10266 11177K 12434K 166960K 17870 0 pcb 21 20K 25K 166960K 930 0 rtable 148 13K 15K 166960K 1346 0 pf 34 17K 82K 166960K 589 0 ifaddr 23 4K 8K 166960K 287 0 ifgroup 48 2K 3K 166960K 530 0 sysctl 4 1K 9K 166960K 26 0 counters 66 36K 38K 166960K 578 0 ioctlops 0 0K 8K 166960K 2587 0 iov 0 0K 24K 166960K 276 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1604 101K 102K 166960K 5714 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 10K 166960K 70 0 VM map 2 1K 1K 166960K 2 0 sem 23 137K 137K 166960K 87 0 dirhash 12 2K 2K 166960K 114 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 4070 0 sigio 0 0K 0K 166960K 206 0 proc 72 115K 179K 166960K 1231 0 subproc 72 4K 4K 166960K 181 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 626 0 in_multi 32 2K 7K 166960K 402 0 ether_multi 1 0K 0K 166960K 50 0 mrt 1 0K 0K 166960K 33 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 1143 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 271 169K 179K 166960K 38171 0 UVM aobj 180 30K 32K 166960K 193 0 pinsyscall 43 86K 103K 166960K 5478 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 282 0 NDP 10 0K 2K 166960K 221 0 temp 153 8685K 9197K 166960K 247296 0 kqueue 14 22K 36K 166960K 784 0 SYN cache 2 8K 16K 166960K 3 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 120 362 0 359 1 0 1 1 0 8 0 rtentry 176 416 0 379 6 1 5 6 0 8 0 unpcb 144 2606 0 2585 17 16 1 6 0 8 0 syncache 336 7 0 7 3 3 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 736 975 0 968 11 10 1 7 0 8 0 arp 136 60 0 55 1 0 1 1 0 8 0 inpcb 328 4882 0 4867 41 39 2 13 0 8 0 nd6 152 73 0 66 1 0 1 1 0 8 0 pkpcb 40 29 0 29 5 5 0 1 0 8 0 kcovpl 48 20 0 12 1 0 1 1 0 8 0 mppekey 1024 3 0 3 3 3 0 1 0 8 0 ppxss 1192 200 0 200 4 4 0 1 0 8 0 pppxif 1504 19 0 19 8 8 0 1 0 8 0 pfstscr 40 4 0 4 3 3 0 1 0 8 0 pffrag 232 21 0 12 1 0 1 1 0 482 0 pffrnode 88 17 0 8 1 0 1 1 0 8 0 pffrent 40 113 0 104 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 9 0 9 4 4 0 1 0 8 0 pfanchor 1288 5 0 1 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 252 0 140 1 0 1 1 0 8 0 pfstkey 128 391 0 277 5 0 5 5 0 8 0 pfstate 448 316 0 207 15 0 15 15 0 8 0 pfrule 1344 68 0 62 2 1 1 2 0 8 0 rttmr 136 5 0 5 3 3 0 1 0 8 0 art_heap8 4096 6 0 1 5 0 5 5 0 8 0 art_heap4 256 1447 0 1264 34 21 13 30 0 8 0 art_table 40 1453 0 1265 5 1 4 5 0 8 0 art_node 32 413 0 381 2 1 1 2 0 8 0 sysvmsgpl 40 19 0 12 1 0 1 1 0 8 0 semupl 112 5 0 5 3 3 0 1 0 8 0 semapl 112 80 0 59 1 0 1 1 0 8 0 shmpl 112 171 0 7 5 0 5 5 0 8 0 dirhash 1024 88 0 71 3 0 3 3 0 8 0 dino2pl 256 9176 0 7656 97 1 96 96 0 8 0 ffsino 296 9176 0 7656 119 1 118 118 0 8 0 nchpl 144 14562 0 12825 65 0 65 65 0 8 0 rtmask 32 49 0 49 7 7 0 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 52292 0 52292 6 5 1 2 0 8 1 percpumem 16 304 0 256 1 0 1 1 0 8 0 vcpupl 3968 14 0 1 2 0 2 2 0 8 0 vmpool 848 19 0 6 2 0 2 2 0 8 0 pfiaddrpl 120 1 0 1 1 1 0 1 0 8 0 kstatmem 264 362 0 336 6 3 3 3 0 8 0 scsiplug 72 20 0 20 7 7 0 1 0 8 0 scxspl 216 85819 0 85819 18 17 1 8 1 8 1 plimitpl 152 1319 0 1300 1 0 1 1 0 8 0 sigapl 424 4342 0 4293 7 1 6 7 0 8 0 knotepl 120 835 0 0 25 0 25 25 0 8 0 kqueuepl 224 2003 0 1989 23 22 1 5 0 8 0 pipepl 344 616 0 586 19 16 3 9 0 8 0 fdescpl 528 4296 0 4264 3 0 3 3 0 8 0 filepl 160 30538 0 30286 36 23 13 20 0 8 0 lockfpl 104 2104 0 2101 5 4 1 2 0 8 0 lockfspl 48 677 0 674 1 0 1 1 0 8 0 sessionpl 144 38 0 29 1 0 1 1 0 8 0 pgrppl 48 267 0 250 1 0 1 1 0 8 0 ucredpl 104 4866 0 4853 1 0 1 1 0 8 0 zombiepl 144 4992 0 4991 2 1 1 1 0 8 0 processpl 1232 4342 0 4293 5 0 5 5 0 8 0 procpl 664 10834 0 10773 7 1 6 7 0 8 0 sosppl 176 27 0 27 6 6 0 1 0 8 0 sockpl 752 8031 0 7992 74 69 5 27 0 8 0 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 12 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 59 0 0 6 0 6 6 0 8 0 mtagpl 96 112 0 0 2 0 2 2 0 8 0 mbufpl 256 281 0 0 16 0 16 16 0 8 0 bufpl 280 37118 0 30982 439 0 439 439 0 8 0 anonpl 32 13795 0 0 111 0 111 111 0 246 0 amapchunkpl 152 145782 0 145116 62 35 27 36 0 158 0 amappl16 200 13831 0 13761 79 67 12 32 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 11 0 11 3 3 0 1 0 8 0 amappl13 176 570 0 569 1 0 1 1 0 8 0 amappl12 168 4737 0 4694 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 1 0 1 0 8 0 amappl10 152 50 0 36 1 0 1 1 0 8 0 amappl9 144 244 0 244 1 1 0 1 0 8 0 amappl8 136 31 0 28 1 0 1 1 0 8 0 amappl7 128 131 0 129 1 0 1 1 0 8 0 amappl6 120 446 0 432 1 0 1 1 0 8 0 amappl5 112 82 0 71 1 0 1 1 0 8 0 amappl4 104 495 0 464 1 0 1 1 0 8 0 amappl3 96 27419 0 27298 5 1 4 4 0 8 0 amappl2 88 658 0 596 2 0 2 2 0 8 0 amappl1 80 26535 0 25931 14 0 14 14 0 8 0 amappl 88 36563 0 36372 5 0 5 5 0 92 0 uvmvnodes 80 209 0 0 5 0 5 5 0 8 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma8192 8192 2 0 2 2 2 0 1 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 8 0 8 3 3 0 1 0 8 0 dma128 128 260 0 260 7 7 0 1 0 8 0 dma64 64 11 0 11 5 5 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 192 0 13 4 0 4 4 0 8 0 uaddrrnd 24 4296 0 4264 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4296 0 4264 1 0 1 1 0 8 0 vmmpekpl 168 30292 0 30230 4 0 4 4 0 8 0 vmmpepl 168 270989 0 268933 137 39 98 113 0 357 0 vmsppl 488 4295 0 4264 6 2 4 5 0 8 0 rwobjpl 80 68110 0 66713 40 6 34 35 0 8 0 pdppl 4096 8638 0 8553 136 51 85 87 0 8 0 pvpl 32 22710 0 0 183 1 182 182 0 265 0 pmappl 256 4314 0 4270 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 364 0 101 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837cbff0) 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(ffffffff838f6ec0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff838f6ec0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 scsi_xs_put(fffffd80744d6cc0) at scsi_xs_put+0x51 scsi_iopool_put sys/scsi/scsi_base.c:270 [inline] scsi_xs_put(fffffd80744d6cc0) at scsi_xs_put+0x51 scsi_io_put sys/scsi/scsi_base.c:499 [inline] scsi_xs_put(fffffd80744d6cc0) at scsi_xs_put+0x51 sys/scsi/scsi_base.c:787 scsi_done(fffffd80744d6cc0) 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(ffff80002a2d4670,ffff80000006b400) at intr_handler+0x125 sys/arch/amd64/amd64/intr.c:564 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff838f6ec0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff838f6ec0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 ktrgenio(ffff80002a262a70,3,0,ffff800000b365b0,1c2c) at ktrgenio+0x228 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrgenio(ffff80002a262a70,3,0,ffff800000b365b0,1c2c) at ktrgenio+0x228 sys/kern/kern_ktrace.c:264 dofilereadv(ffff80002a262a70,3,ffff80002a2d4928,0,ffff80002a2d49e0) at dofilereadv+0x474 sys/kern/sys_generic.c:268 sys_read(ffff80002a262a70,ffff80002a2d4a90,ffff80002a2d49e0) at sys_read+0xa2 sys/kern/sys_generic.c:172 end trace frame: 0xffff80002a2d4a80, count: 0 ddb{0}> trace x86_ipi_db(ffffffff837cbff0) 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(ffffffff838f6ec0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff838f6ec0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 scsi_xs_put(fffffd80744d6cc0) at scsi_xs_put+0x51 scsi_iopool_put sys/scsi/scsi_base.c:270 [inline] scsi_xs_put(fffffd80744d6cc0) at scsi_xs_put+0x51 scsi_io_put sys/scsi/scsi_base.c:499 [inline] scsi_xs_put(fffffd80744d6cc0) at scsi_xs_put+0x51 sys/scsi/scsi_base.c:787 scsi_done(fffffd80744d6cc0) 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(ffff80002a2d4670,ffff80000006b400) at intr_handler+0x125 sys/arch/amd64/amd64/intr.c:564 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff838f6ec0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff838f6ec0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 ktrgenio(ffff80002a262a70,3,0,ffff800000b365b0,1c2c) at ktrgenio+0x228 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrgenio(ffff80002a262a70,3,0,ffff800000b365b0,1c2c) at ktrgenio+0x228 sys/kern/kern_ktrace.c:264 dofilereadv(ffff80002a262a70,3,ffff80002a2d4928,0,ffff80002a2d49e0) at dofilereadv+0x474 sys/kern/sys_generic.c:268 sys_read(ffff80002a262a70,ffff80002a2d4a90,ffff80002a2d49e0) at sys_read+0xa2 sys/kern/sys_generic.c:172 syscall(ffff80002a2d4a90) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2d4a90) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7083f91f16b0, count: -16 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x7588fcaf3130, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7588fcaf3130, count: -1