uvm_fault(0xfffffd806ef627a8, 0xf, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ktrops+0x58: movq 0x10(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND *186616 70894 0 0 0x4000000 1K syz-executor 346929 27779 0 0x2 0x1 0 syz-executor ktrops(ffff800034c09ca8,ffffffffffffffff,0,af82c397,fffffd805ddb3be8,fffffd80097fb4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800034c09ca8,ffffffffffffffff,0,af82c397,fffffd805ddb3be8,fffffd80097fb4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805ddb3be8,4,af82c397,ffffffff,ffff800034c09ca8) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805ddb3be8,4,af82c397,ffffffff,ffff800034c09ca8) at doktrace+0x560 sys/kern/kern_ktrace.c:502 sys_ktrace(ffff800034c09ca8,ffff80003c4895a0,ffff80003c4894f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c4895a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4895a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb66e3868bc0, count: 10 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(0xfffffd806ef627a8, 0xf, 0, 1) -> e ddb{1}> trace ktrops(ffff800034c09ca8,ffffffffffffffff,0,af82c397,fffffd805ddb3be8,fffffd80097fb4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800034c09ca8,ffffffffffffffff,0,af82c397,fffffd805ddb3be8,fffffd80097fb4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805ddb3be8,4,af82c397,ffffffff,ffff800034c09ca8) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805ddb3be8,4,af82c397,ffffffff,ffff800034c09ca8) at doktrace+0x560 sys/kern/kern_ktrace.c:502 sys_ktrace(ffff800034c09ca8,ffff80003c4895a0,ffff80003c4894f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c4895a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4895a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb66e3868bc0, count: -5 ddb{1}> show registers rdi 0xffff800034c09ca8 rsi 0xffffffffffffffff rbp 0xffff80003c4892b0 rbx 0xfffffd80097fb4e0 rdx 0 rcx 0xffff800034c09ca8 rax 0xffff8000299edff0 r8 0xfffffd805ddb3be8 r9 0xfffffd80097fb4e0 r10 0x1b0426c6c19ea109 r11 0x5a76a3382a115e23 r12 0xffff800034c09ca8 r13 0x1 r14 0xffffffffffffffff r15 0xaf82c397 rip 0xffffffff81a96128 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c489230 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=186616 pid=70894 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=60, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800034c08d18,0xffff800034c08560 process=0xffff80003a025360 user=0xffff80003c484000, vmspace=0xfffffd806ef627a8 estcpu=10, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67450 378404 86336 0 2 0 syz-executor 67450 27367 86336 0 3 0x4000080 fsleep syz-executor 99890 412753 70302 0 2 0 syz-executor 99890 194674 70302 0 3 0x4000080 fifow syz-executor 70894 320741 61986 0 2 0 syz-executor 70894 281528 61986 0 2 0x4000000 syz-executor *70894 186616 61986 0 7 0x4000000 syz-executor 70894 145851 61986 0 3 0x4000080 fsleep syz-executor 17146 323281 94948 0 2 0 syz-executor 17146 364002 94948 0 3 0x4000080 sbwait syz-executor 76920 105209 25536 0 3 0x3000 suspend syz-executor 76920 371841 25536 0 3 0x4081000 biowait syz-executor 11393 68947 27631 0 3 0x3000 suspend syz-executor 11393 281239 27631 0 3 0x4081000 biowait syz-executor 11393 184059 27631 0 3 0x4081000 fltagain2 syz-executor 36480 473543 0 0 3 0x14200 acct acct 77512 219711 0 0 3 0x14200 bored sosplice 86336 413288 27779 0 3 0x82 nanoslp syz-executor 61986 127831 27779 0 3 0x82 nanoslp syz-executor 94948 14698 27779 0 3 0x82 nanoslp syz-executor 93165 375457 27779 0 3 0x82 wait syz-executor 27631 368107 27779 0 3 0x82 wait syz-executor 70302 375670 27779 0 3 0x82 nanoslp syz-executor 52979 61476 27779 0 2 0x2 syz-executor 25536 496430 27779 0 3 0x82 wait syz-executor 27779 346929 54923 0 7 0x3 syz-executor 54923 522760 78723 0 3 0x10008a sigsusp ksh 78723 55780 23421 0 3 0x98 kqread sshd-session 23421 81668 97271 0 3 0x92 kqread sshd-session 67049 418293 1 0 3 0x100083 ttyin getty 97271 166929 1 0 3 0x88 kqread sshd 65361 493339 97470 74 3 0x1100092 bpf pflogd 97470 337878 1 0 3 0x80 sbwait pflogd 23919 209488 92025 73 3 0x1100090 kqread syslogd 92025 242043 1 0 3 0x100082 sbwait syslogd 21160 178525 1 0 3 0x100080 kqread resolvd 3305 426489 8307 77 3 0x100092 kqread dhcpleased 29982 212102 8307 77 3 0x100092 kqread dhcpleased 8307 142538 1 0 3 0x80 kqread dhcpleased 19320 60177 0 0 3 0x14200 bored smr 18513 131514 0 0 3 0x14200 pgzero zerothread 89513 432673 0 0 3 0x14200 aiodoned aiodoned 75925 323603 0 0 3 0x14200 syncer update 97168 483536 0 0 3 0x14200 cleaner cleaner 91659 353067 0 0 3 0x14200 reaper reaper 36999 460470 0 0 3 0x14200 pgdaemon pagedaemon 63198 323287 0 0 3 0x14200 bored viomb 81699 133379 0 0 3 0x40014200 acpi0 acpi0 51815 380819 0 0 3 0x40014200 idle1 39334 225183 0 0 3 0x14200 bored softnet7 64914 233460 0 0 3 0x14200 bored softnet6 87842 82441 0 0 3 0x14200 bored softnet5 594 249169 0 0 3 0x14200 bored softnet4 12239 430169 0 0 3 0x14200 bored softnet3 27131 385615 0 0 3 0x14200 bored softnet2 74959 261043 0 0 3 0x14200 bored softnet1 73788 197049 0 0 3 0x14200 bored softnet0 94881 246921 0 0 3 0x14200 smrbar systqmp 53850 98899 0 0 3 0x14200 bored systq 56295 266874 0 0 3 0x14200 tmoslp softclockmp 98661 74985 0 0 3 0x40014200 tmoslp softclock 65580 509032 0 0 3 0x40014200 idle0 1 7337 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 70894 (syz-executor) thread 0xffff800034c09ca8 (186616) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8394d350) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2d8 sys/kern/kern_synch.c:367 #3 biowait+0xc6 sys/kern/vfs_bio.c:1242 #4 bwrite+0x2e7 sys/kern/vfs_bio.c:754 #5 ffs_update+0x2fe sys/ufs/ffs/ffs_inode.c:111 #6 ffs_truncate+0xc9b sys/ufs/ffs/ffs_inode.c:-1 #7 ufs_inactive+0x202 sys/ufs/ufs/ufs_inode.c:84 #8 VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 #9 vrele+0x129 sys/kern/vfs_subr.c:844 #10 ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 #11 ktrops+0x26c sys/kern/kern_ktrace.c:573 #12 doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] #12 doktrace+0x560 sys/kern/kern_ktrace.c:502 #13 sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 #14 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #14 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #15 Xsyscall+0x128 Process 76920 (syz-executor) thread 0xffff800034c087e8 (371841) exclusive rrwlock inode r = 0 (0xfffffd80691577d0) #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:746 #9 Xsyscall+0x128 Process 11393 (syz-executor) thread 0xffff800034c02d28 (281239) exclusive rrwlock inode r = 0 (0xfffffd80691570e0) #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:746 #9 Xsyscall+0x128 Process 94881 (systqmp) thread 0xffff8000ffffe000 (246921) shared rwlock systqmp r = 0 (0xffffffff83848788) #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 10212 11029K 11155K 166960K 11380 0 pcb 17 12K 12K 166960K 50 0 rtable 191 8K 10K 166960K 316 0 pf 40 18K 19K 166960K 65 0 ifaddr 40 6K 7K 166960K 53 0 ifgroup 62 2K 2K 166960K 72 0 sysctl 3 1K 9K 166960K 7 0 counters 70 37K 37K 166960K 90 0 ioctlops 0 0K 4K 166960K 1536 0 iov 0 0K 16K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1342 84K 85K 166960K 1444 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 15 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 268 0 sigio 0 0K 0K 166960K 1 0 proc 72 115K 164K 166960K 554 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 18 0 in_multi 85 6K 7K 166960K 104 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 376 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 244 167K 176K 166960K 4197 0 UVM aobj 8 4K 6K 166960K 9 0 pinsyscall 42 84K 102K 166960K 1346 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 11 0 NDP 13 0K 2K 166960K 34 0 temp 43 8639K 8707K 166960K 12523 0 kqueue 13 20K 26K 166960K 44 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 45 0 42 1 0 1 1 0 8 0 rtentry 176 97 0 22 5 0 5 5 0 8 0 unpcb 144 115 0 95 2 0 2 2 0 8 1 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 84 0 80 4 0 4 4 0 8 3 arp 136 10 0 1 1 0 1 1 0 8 0 inpcb 328 223 0 216 4 0 4 4 0 8 3 nd6 144 16 0 2 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 10 0 10 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 1 0 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfstitem 24 30 0 1 1 0 1 1 0 8 0 pfstkey 128 30 0 1 1 0 1 1 0 8 0 pfstate 384 29 0 1 3 0 3 3 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 442 0 41 28 0 28 28 0 8 1 art_table 40 444 0 41 5 0 5 5 0 8 0 art_node 32 96 0 11 1 0 1 1 0 8 0 semapl 112 11 0 3 1 0 1 1 0 8 0 shmpl 112 6 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1808 0 291 96 0 96 96 0 8 0 ffsino 296 1808 0 291 118 0 118 118 0 8 1 nchpl 144 2188 0 495 64 0 64 64 0 8 0 rtmask 32 5 0 5 1 0 1 1 0 8 1 uvmvnodes 80 1935 0 0 40 0 40 40 0 8 0 vnodes 216 1935 0 0 108 0 108 108 0 8 0 namei 1024 6653 0 6653 1 0 1 1 0 8 1 percpumem 16 60 0 10 1 0 1 1 0 8 0 kstatmem 264 40 0 10 3 0 3 3 0 8 1 scxspl 216 15652 0 15650 8 0 8 8 1 8 7 plimitpl 152 58 0 38 1 0 1 1 0 8 0 sigapl 424 572 0 517 7 0 7 7 0 8 0 knotepl 120 545 0 0 17 0 17 17 0 8 0 kqueuepl 224 70 0 61 1 0 1 1 0 8 0 pipepl 344 210 0 181 12 1 11 12 0 8 8 fdescpl 528 548 0 517 3 0 3 3 0 8 0 filepl 160 2443 0 2221 19 0 19 19 0 8 8 lockfpl 104 36 0 34 1 0 1 1 0 8 0 lockfspl 48 16 0 14 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 233 0 220 1 0 1 1 0 8 0 zombiepl 144 520 0 517 1 0 1 1 0 8 0 processpl 1232 572 0 517 5 0 5 5 0 8 0 procpl 664 819 0 755 7 0 7 7 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 752 394 0 364 7 0 7 7 0 8 3 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 15 0 15 15 0 8 0 mcl2k 2048 24 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 145 0 0 10 0 10 10 0 8 0 bufpl 280 8035 0 1892 439 0 439 439 0 8 0 anonpl 32 13167 0 0 107 0 107 107 0 246 0 amapchunkpl 152 12368 0 11852 27 3 24 24 0 158 2 amappl16 200 2843 0 2359 32 1 31 31 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 113 0 101 1 0 1 1 0 8 0 amappl13 176 10 0 10 1 1 0 1 0 8 0 amappl12 168 1188 0 1157 4 1 3 3 0 8 1 amappl11 160 96 0 82 1 0 1 1 0 8 0 amappl10 152 44 0 44 1 1 0 1 0 8 0 amappl9 144 251 0 251 1 1 0 1 0 8 0 amappl8 136 21 0 19 1 0 1 1 0 8 0 amappl7 128 107 0 95 1 0 1 1 0 8 0 amappl6 120 178 0 175 1 0 1 1 0 8 0 amappl5 112 124 0 115 1 0 1 1 0 8 0 amappl4 104 289 0 270 1 0 1 1 0 8 0 amappl3 96 2004 0 1905 3 0 3 3 0 8 0 amappl2 88 772 0 694 2 0 2 2 0 8 0 amappl1 80 8619 0 8011 15 0 15 15 0 8 2 amappl 88 3509 0 3339 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 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 24 548 0 517 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 548 0 517 1 0 1 1 0 8 0 vmmpekpl 168 6418 0 6381 3 0 3 3 0 8 0 vmmpepl 168 41594 0 39163 113 0 113 113 0 357 0 vmsppl 488 547 0 517 5 0 5 5 0 8 1 rwobjpl 80 16550 0 13218 70 0 70 70 0 8 0 pdppl 4096 1104 0 1034 96 22 74 84 0 8 4 pvpl 32 20791 0 0 170 2 168 169 0 265 0 pmappl 256 547 0 517 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 268 0 24 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8379cff0) 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(ffffffff8394d148) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8394d148) at __mp_lock+0x199 sys/kern/kern_lock.c:165 intr_handler(ffff80002a2b6bf0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff8394d148) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8394d148) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrgenio(ffff80002a2b82b0,3,1,ffff80000002e380,38) at ktrgenio+0x228 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrgenio(ffff80002a2b82b0,3,1,ffff80000002e380,38) at ktrgenio+0x228 sys/kern/kern_ktrace.c:264 dofilewritev(ffff80002a2b82b0,3,ffff80002a2b6ea8,0,ffff80002a2b6f60) at dofilewritev+0x502 sys/kern/sys_generic.c:398 sys_write(ffff80002a2b82b0,ffff80002a2b7010,ffff80002a2b6f60) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80002a2b7010) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2b7010) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dcf79a01d90, count: 3 ddb{0}> trace x86_ipi_db(ffffffff8379cff0) 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(ffffffff8394d148) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8394d148) at __mp_lock+0x199 sys/kern/kern_lock.c:165 intr_handler(ffff80002a2b6bf0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff8394d148) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8394d148) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrgenio(ffff80002a2b82b0,3,1,ffff80000002e380,38) at ktrgenio+0x228 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrgenio(ffff80002a2b82b0,3,1,ffff80000002e380,38) at ktrgenio+0x228 sys/kern/kern_ktrace.c:264 dofilewritev(ffff80002a2b82b0,3,ffff80002a2b6ea8,0,ffff80002a2b6f60) at dofilewritev+0x502 sys/kern/sys_generic.c:398 sys_write(ffff80002a2b82b0,ffff80002a2b7010,ffff80002a2b6f60) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80002a2b7010) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2b7010) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dcf79a01d90, count: -12 ddb{0}> machine ddbcpu 1 Stopped at ktrops+0x58: movq 0x10(%r14),%r14 ktrops(ffff800034c09ca8,ffffffffffffffff,0,af82c397,fffffd805ddb3be8,fffffd80097fb4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800034c09ca8,ffffffffffffffff,0,af82c397,fffffd805ddb3be8,fffffd80097fb4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805ddb3be8,4,af82c397,ffffffff,ffff800034c09ca8) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805ddb3be8,4,af82c397,ffffffff,ffff800034c09ca8) at doktrace+0x560 sys/kern/kern_ktrace.c:502 sys_ktrace(ffff800034c09ca8,ffff80003c4895a0,ffff80003c4894f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c4895a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4895a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb66e3868bc0, count: 10 ddb{1}> trace ktrops(ffff800034c09ca8,ffffffffffffffff,0,af82c397,fffffd805ddb3be8,fffffd80097fb4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800034c09ca8,ffffffffffffffff,0,af82c397,fffffd805ddb3be8,fffffd80097fb4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805ddb3be8,4,af82c397,ffffffff,ffff800034c09ca8) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805ddb3be8,4,af82c397,ffffffff,ffff800034c09ca8) at doktrace+0x560 sys/kern/kern_ktrace.c:502 sys_ktrace(ffff800034c09ca8,ffff80003c4895a0,ffff80003c4894f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c4895a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4895a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb66e3868bc0, count: -5