uvm_fault(0xfffffd806c011218, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81004be8 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff800036024fb0 gsbase 0xffff8000299fdff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81004be8 Starting stack trace... panic(ffffffff8339ffd2) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff800036024f00) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001574000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80002a2b3240) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2b3240) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000360250b0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806e1462a0,81,fffffd80097fb750,ffff80002a2b3240) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805ff13448,ffff80002a2b3240) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805ff13448,ffff80002a2b3240) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805ff13448,ffff80002a2b3240) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805ff13448,ffff80002a2b3240) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b3240) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b3240,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b3240,ffff800036025420,ffff800036025370) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800036025420) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800036025420) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79d07c1ef3c0, 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 *166202 20071 0 0 0 1 syz-executor 16772 17644 0 0x14000 0x200 0 reaper proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7617e17e0b80, 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(0xfffffd806c011218, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7617e17e0b80, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a3572d0 rbx 0 rdx 0 rcx 0xffff80002ec12a98 rax 0x2a r8 0xffff80002a357200 r9 0x1 r10 0x787c9a1b9dbde4f9 r11 0xa9dc8703426098a r12 0 r13 0xffffffff82624218 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff82b684c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a357250 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=166202 pid=20071 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003bc33a18,0xffff80002ec13508 process=0xffff80002a369d08 user=0xffff80002a352000, vmspace=0xfffffd806b95fd70 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 72489 404549 6731 0 2 0 syz-executor 72489 396953 6731 0 3 0x4000080 fsleep syz-executor 79156 438021 34228 0 2 0 syz-executor 79156 171550 34228 0 3 0x4000080 sbwait syz-executor 79156 10044 34228 0 2 0x4000000 syz-executor *20071 166202 76702 0 7 0 syz-executor 20071 42487 76702 0 3 0x4000000 biowait syz-executor 68404 318842 49539 0 3 0x80 nanoslp syz-executor 68404 94202 49539 0 3 0x4000080 kqsel syz-executor 68404 174809 49539 0 3 0x4000080 fsleep syz-executor 10466 1072 88383 0 3 0x80 nanoslp syz-executor 10466 396053 88383 0 3 0x4000080 ttyout syz-executor 10466 235811 88383 0 3 0x4000080 fsleep syz-executor 26277 390345 32193 0 3 0x80 nanoslp syz-executor 26277 347048 32193 0 3 0x4000080 kqread syz-executor 26277 84094 32193 0 3 0x4000080 fsleep syz-executor 21868 136536 74102 0 3 0x3000 suspend syz-executor 21868 376661 74102 0 3 0x4081000 biowait syz-executor 21868 495068 74102 0 3 0x4081000 fltagain2 syz-executor 74102 162020 22863 0 3 0x82 nanoslp syz-executor 6731 334455 22863 0 3 0x82 nanoslp syz-executor 14378 323995 1 0 3 0x100083 ttyin getty 34228 236035 22863 0 3 0x82 nanoslp syz-executor 32193 233987 22863 0 3 0x82 nanoslp syz-executor 49539 442228 22863 0 3 0x82 nanoslp syz-executor 5464 501644 0 0 3 0x14200 bored sosplice 76702 101661 22863 0 3 0x82 nanoslp syz-executor 88383 43005 22863 0 3 0x82 nanoslp syz-executor 34561 159663 22863 0 3 0x82 nanoslp syz-executor 22863 53483 61629 0 3 0x82 kqread syz-executor 61629 292759 96997 0 3 0x10008a sigsusp ksh 96997 120714 75504 0 3 0x98 kqread sshd-session 75504 146630 68695 0 3 0x92 kqread sshd-session 68695 463127 1 0 3 0x88 kqread sshd 88294 387634 63667 74 3 0x1100092 bpf pflogd 63667 193405 1 0 3 0x80 sbwait pflogd 1296 133928 44127 73 3 0x1100090 kqread syslogd 44127 79611 1 0 3 0x100082 sbwait syslogd 75790 513261 1 0 3 0x100080 kqread resolvd 46755 451219 97258 77 3 0x100092 kqread dhcpleased 27649 60595 97258 77 3 0x100092 kqread dhcpleased 97258 210233 1 0 3 0x80 kqread dhcpleased 29362 209575 0 0 3 0x14200 bored smr 88260 259643 0 0 2 0x14200 zerothread 54680 312801 0 0 3 0x14200 aiodoned aiodoned 73075 118255 0 0 3 0x14200 syncer update 36286 297524 0 0 3 0x14200 cleaner cleaner 17644 16772 0 0 7 0x14200 reaper 73782 192542 0 0 3 0x14200 pgdaemon pagedaemon 86635 236449 0 0 3 0x14200 bored viomb 36536 388427 0 0 3 0x40014200 acpi0 acpi0 87507 357717 0 0 3 0x40014200 idle1 68945 214796 0 0 3 0x14200 bored softnet7 41732 164372 0 0 3 0x14200 bored softnet6 26863 165374 0 0 3 0x14200 bored softnet5 99952 205601 0 0 3 0x14200 bored softnet4 33507 146879 0 0 3 0x14200 bored softnet3 40600 374246 0 0 3 0x14200 bored softnet2 946 21912 0 0 3 0x14200 bored softnet1 64181 37085 0 0 3 0x14200 bored softnet0 64259 157588 0 0 2 0x40014200 systqmp 99923 32607 0 0 3 0x14200 bored systq 54805 272543 0 0 3 0x14200 tmoslp softclockmp 91525 107791 0 0 3 0x40014200 tmoslp softclock 38124 56855 0 0 3 0x40014200 idle0 1 459019 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &sched_lock r = 0 (0xffffffff839528c0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 wakeup_n+0x54 sys/kern/kern_synch.c:579 #4 uvm_pmr_freepageq+0x3b6 sys/uvm/uvm_pmemrange.c:1389 #5 km_free+0x36b sys/uvm/uvm_km.c:827 #6 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #7 reaper+0x1aa sys/kern/kern_exit.c:493 #8 proc_trampoline+0x10 exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff838dcef0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 uvm_pmr_freepageq+0x15c sys/uvm/uvm_pmemrange.c:1371 #4 km_free+0x36b sys/uvm/uvm_km.c:827 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1aa sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 Process 79156 (syz-executor) thread 0xffff80002ec13a28 (171550) exclusive rwlock sbufrcv r = 0 (0xffff80000163b878) #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 sblock+0xb6 sys/kern/uipc_socket2.c:536 #3 soreceive+0x27d sys/kern/uipc_socket.c:870 #4 recvit+0x40b sys/kern/uipc_syscalls.c:1078 #5 sys_recvmmsg+0x410 sys/kern/uipc_syscalls.c:969 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 Process 20071 (syz-executor) thread 0xffff80002ec134f8 (42487) exclusive rrwlock inode r = 0 (0xfffffd806c3036a0) #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 21868 (syz-executor) thread 0xffff80002a2ee550 (376661) exclusive rrwlock inode r = 0 (0xfffffd806704cc78) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10268 11146K 11950K 166960K 16576 0 pcb 18 16K 18K 166960K 808 0 rtable 218 13K 13K 166960K 977 0 pf 46 19K 131092K 166960K 795 0 ifaddr 43 8K 9K 166960K 256 0 ifgroup 68 2K 3K 166960K 492 0 sysctl 4 1K 9K 166960K 101 0 counters 74 37K 38K 166960K 592 0 ioctlops 0 0K 4K 166960K 2490 0 iov 1 4K 32K 166960K 553 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1547 97K 98K 166960K 5757 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 5K 13K 166960K 51 0 VM map 2 1K 1K 166960K 2 0 sem 25 29K 45K 166960K 202 0 dirhash 12 2K 2K 166960K 99 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 4350 0 sigio 0 0K 0K 166960K 115 0 proc 72 115K 163K 166960K 1265 0 subproc 72 4K 4K 166960K 137 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 673 0 in_multi 75 5K 7K 166960K 363 0 ether_multi 1 0K 0K 166960K 54 0 mrt 2 0K 0K 166960K 27 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 271 1208K 1208K 166960K 271 0 exec 0 0K 1K 166960K 1103 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 264 156K 174K 166960K 39740 0 UVM aobj 82 5K 5K 166960K 92 0 pinsyscall 43 86K 101K 166960K 5635 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 296 0 NDP 16 0K 2K 166960K 178 0 temp 83 8652K 8908K 166960K 217105 0 kqueue 15 24K 34K 166960K 876 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 120 537 0 534 7 6 1 3 0 8 0 rtentry 176 326 0 247 6 1 5 5 0 8 0 unpcb 144 3613 0 3591 20 14 6 6 0 8 5 syncache 336 18 0 18 5 5 0 1 0 8 0 tcpqe 32 7 0 7 3 3 0 1 0 8 0 tcpcb 736 1523 0 1508 24 21 3 7 0 8 1 arp 128 42 0 32 1 0 1 1 0 8 0 ipq 40 2 0 2 2 2 0 1 0 8 0 ipqe 40 6 0 6 2 2 0 1 0 8 0 inpcb 328 5076 0 5053 33 22 11 11 0 8 7 nd6 144 45 0 27 1 0 1 1 0 8 0 pkpcb 40 42 0 42 7 6 1 1 0 8 1 kcovpl 48 15 0 7 1 0 1 1 0 8 0 mppekey 1024 4 0 4 2 1 1 1 0 8 1 ppxss 1192 200 0 199 1 0 1 1 0 8 0 pppxif 1504 20 0 20 7 6 1 1 0 8 1 pfstscr 40 5 0 5 1 1 0 1 0 8 0 pffrag 232 51 0 44 1 0 1 1 0 482 0 pffrnode 88 39 0 32 1 0 1 1 0 8 0 pffrent 40 164 0 157 1 0 1 1 0 8 0 pfosfp 40 1431 0 1006 5 0 5 5 0 8 0 pfosfpen 112 1431 0 715 21 0 21 21 0 8 0 pfrktable 1344 4 0 4 3 3 0 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 256 0 96 1 0 1 1 0 8 0 pfstkey 128 264 0 104 6 0 6 6 0 8 0 pfstate 384 256 0 100 16 0 16 16 0 8 0 pfrule 1344 91 0 85 2 1 1 2 0 8 0 rttmr 136 3 0 3 3 3 0 1 0 8 0 art_heap8 4096 6 0 2 6 1 5 6 0 8 1 art_heap4 256 1292 0 903 40 13 27 30 0 8 2 art_table 40 1298 0 905 5 0 5 5 0 8 0 art_node 32 296 0 230 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 11 1 0 1 1 0 8 0 semupl 112 3 0 3 3 3 0 1 0 8 0 semapl 112 191 0 168 1 0 1 1 0 8 0 shmpl 112 89 0 10 3 0 3 3 0 8 0 dirhash 1024 75 0 58 3 0 3 3 0 8 0 dino2pl 256 9763 0 8239 96 0 96 96 0 8 0 ffsino 296 9763 0 8239 119 0 119 119 0 8 1 nchpl 144 16105 0 15568 64 40 24 64 0 8 0 rtmask 32 23 0 23 5 4 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 58202 0 58202 2 1 1 1 0 8 1 percpumem 16 311 0 259 1 0 1 1 0 8 0 kstatmem 264 298 0 262 4 1 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 19 0 19 6 5 1 1 0 8 1 scxspl 216 100293 0 100291 16 12 4 8 1 8 3 plimitpl 152 1065 0 1047 1 0 1 1 0 8 0 sigapl 424 4635 0 4580 9 1 8 9 0 8 0 knotepl 120 872 0 0 25 0 25 25 0 8 0 kqueuepl 224 2092 0 2080 21 17 4 9 0 8 2 pipepl 344 745 0 717 14 8 6 9 0 8 2 fdescpl 528 4580 0 4548 3 0 3 3 0 8 0 filepl 160 35912 0 35679 42 21 21 21 0 8 8 lockfpl 104 2202 0 2200 2 1 1 2 0 8 0 lockfspl 48 883 0 881 1 0 1 1 0 8 0 sessionpl 144 45 0 36 1 0 1 1 0 8 0 pgrppl 48 135 0 118 1 0 1 1 0 8 0 ucredpl 104 6241 0 6227 1 0 1 1 0 8 0 zombiepl 144 4582 0 4580 1 0 1 1 0 8 0 processpl 1232 4635 0 4580 6 0 6 6 0 8 0 procpl 664 11665 0 11598 9 2 7 9 0 8 0 sosppl 168 34 0 34 4 3 1 1 0 8 1 sockpl 752 9373 0 9325 74 58 16 22 0 8 9 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 136 0 0 16 0 16 16 0 8 0 mcl2k 2048 62 0 0 8 0 8 8 0 8 0 mtagpl 96 19 0 0 1 0 1 1 0 8 0 mbufpl 256 1226 0 0 73 0 73 73 0 8 0 bufpl 280 40299 0 34155 442 2 440 440 0 8 0 anonpl 32 13903 0 0 112 0 112 112 0 246 0 amapchunkpl 152 138727 0 138136 60 30 30 33 0 158 5 amappl16 200 16208 0 15972 110 93 17 35 0 8 4 amappl15 192 8 0 8 2 2 0 1 0 8 0 amappl14 184 153 0 141 1 0 1 1 0 8 0 amappl13 176 5 0 5 2 2 0 1 0 8 0 amappl12 168 5353 0 5321 3 1 2 2 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 268 0 267 2 1 1 1 0 8 0 amappl8 136 31 0 28 1 0 1 1 0 8 0 amappl7 128 139 0 127 1 0 1 1 0 8 0 amappl6 120 259 0 255 1 0 1 1 0 8 0 amappl5 112 169 0 159 1 0 1 1 0 8 0 amappl4 104 360 0 339 1 0 1 1 0 8 0 amappl3 96 29159 0 29028 4 0 4 4 0 8 0 amappl2 88 852 0 786 2 0 2 2 0 8 0 amappl1 80 27969 0 27370 16 2 14 15 0 8 0 amappl 88 38181 0 37990 5 0 5 5 0 92 0 dma32768 32768 4 0 4 2 2 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 2 0 2 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 10 0 10 5 4 1 1 0 8 1 dma128 128 257 0 257 4 3 1 1 0 8 1 dma64 64 8 0 8 3 3 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 91 0 10 2 0 2 2 0 8 0 uaddrrnd 24 4580 0 4548 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4580 0 4548 1 0 1 1 0 8 0 vmmpekpl 168 35339 0 35291 3 0 3 3 0 8 0 vmmpepl 168 290845 0 288517 152 46 106 118 0 357 3 vmsppl 488 4579 0 4548 7 2 5 5 0 8 0 rwobjpl 80 78436 0 71252 158 8 150 155 0 8 0 pdppl 4096 9168 0 9096 126 54 72 84 0 8 0 pvpl 32 22111 0 0 178 0 178 178 0 265 0 pmappl 256 4579 0 4548 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 418 0 104 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837e0ff0) 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 __sanitizer_cov_trace_const_cmp4(ffffffff8384b580,9) at __sanitizer_cov_trace_const_cmp4+0x18 kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_const_cmp4(ffffffff8384b580,9) at __sanitizer_cov_trace_const_cmp4+0x18 sys/dev/kcov.c:230 mtx_enter(ffffffff8384b570) at mtx_enter+0x4a sys/kern/kern_lock.c:260 msleep_nsec(ffffffff8384b5a8,ffffffff8384b570,4,ffffffff8338676a,ffffffffffffffff) at msleep_nsec+0x2d3 sys/kern/kern_synch.c:209 reaper(ffff8000ffffc008) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 8 ddb{0}> trace x86_ipi_db(ffffffff837e0ff0) 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 __sanitizer_cov_trace_const_cmp4(ffffffff8384b580,9) at __sanitizer_cov_trace_const_cmp4+0x18 kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_const_cmp4(ffffffff8384b580,9) at __sanitizer_cov_trace_const_cmp4+0x18 sys/dev/kcov.c:230 mtx_enter(ffffffff8384b570) at mtx_enter+0x4a sys/kern/kern_lock.c:260 msleep_nsec(ffffffff8384b5a8,ffffffff8384b570,4,ffffffff8338676a,ffffffffffffffff) at msleep_nsec+0x2d3 sys/kern/kern_synch.c:209 reaper(ffff8000ffffc008) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -7 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: 0x7617e17e0b80, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7617e17e0b80, count: -1