uvm_fault(0xfffffd807e9023f0, 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 430129 35804 0 0 0 0 syz-executor * 8817 72096 0 0 0x4000000 1K syz-executor ktrops(ffff8000313de020,ffffffffffffffff,0,a0c7df9f,fffffd806a2a9db0,fffffd80097fd7b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff8000313de020,ffffffffffffffff,0,a0c7df9f,fffffd806a2a9db0,fffffd80097fd7b8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a2a9db0,4,20c7df9f,0,ffff8000313de020) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a2a9db0,4,20c7df9f,0,ffff8000313de020) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff8000313de020,ffff80003c40b160,ffff80003c40b0b0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c40b160) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c40b160) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8e8dd58ff30, 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(0xfffffd807e9023f0, 0xf, 0, 1) -> e ddb{1}> trace ktrops(ffff8000313de020,ffffffffffffffff,0,a0c7df9f,fffffd806a2a9db0,fffffd80097fd7b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff8000313de020,ffffffffffffffff,0,a0c7df9f,fffffd806a2a9db0,fffffd80097fd7b8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a2a9db0,4,20c7df9f,0,ffff8000313de020) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a2a9db0,4,20c7df9f,0,ffff8000313de020) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff8000313de020,ffff80003c40b160,ffff80003c40b0b0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c40b160) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c40b160) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8e8dd58ff30, count: -5 ddb{1}> show registers rdi 0xffff800030fd6000 rsi 0x150b __ALIGN_SIZE+0x50b rbp 0xffff80003c40ae70 rbx 0xfffffd80097fd7b8 rdx 0xffff800030fd6000 rcx 0x150a __ALIGN_SIZE+0x50a rax 0xffffffff8205b7f3 ktrops+0x43 r8 0xfffffd806a2a9db0 r9 0xfffffd80097fd7b8 r10 0xa2ef380dd0ffac3e r11 0xe58e8024d22a7c31 r12 0xffff8000313de020 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff8205b808 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c40adf0 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=8817 pid=72096 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000313df248,0xffff8000313dfa20 process=0xffff80002a3c0018 user=0xffff80003c406000, vmspace=0xfffffd807e9023f0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 35804 430129 79919 0 7 0 syz-executor 35804 89116 79919 0 3 0x4000080 fsleep syz-executor 72096 444561 49965 0 3 0x80 fsleep syz-executor *72096 8817 49965 0 7 0x4000000 syz-executor 61509 187775 69147 0 3 0x80 fsleep syz-executor 61509 483772 69147 0 3 0x4000080 kqsel syz-executor 80326 15579 9890 0 3 0x80 fsleep syz-executor 80326 59413 9890 0 3 0x4000080 bell syz-executor 92836 449847 49888 0 3 0x80 fsleep syz-executor 92836 417047 49888 0 3 0x4000080 lockf syz-executor 37284 147780 37929 0 3 0x80 fsleep syz-executor 37284 363100 37929 0 3 0x4000080 nanoslp syz-executor 16469 448133 88099 0 3 0x80 fsleep syz-executor 16469 25504 88099 0 3 0x4000080 fsleep syz-executor 16469 292159 88099 0 3 0x4000080 ttyout syz-executor 4070 400930 57065 0 3 0x80 fsleep syz-executor 4070 142749 57065 0 3 0x4000080 fifor syz-executor 49888 319648 6999 0 3 0x82 nanoslp syz-executor 69147 460517 6999 0 3 0x82 nanoslp syz-executor 79919 372197 6999 0 3 0x82 nanoslp syz-executor 37929 161777 6999 0 3 0x82 nanoslp syz-executor 49965 399085 6999 0 3 0x82 nanoslp syz-executor 9890 70432 6999 0 3 0x82 nanoslp syz-executor 57065 468008 6999 0 3 0x82 nanoslp syz-executor 88099 4944 6999 0 3 0x82 nanoslp syz-executor 6999 284679 8634 0 3 0x82 kqread syz-executor 8634 162881 36771 0 3 0x10008a sigsusp ksh 36771 353693 45964 0 3 0x98 kqread sshd-session 45964 137570 27755 0 3 0x92 kqread sshd-session 62985 105013 1 0 3 0x100083 ttyin getty 27755 343176 1 0 3 0x88 kqread sshd 61943 34498 54458 74 3 0x1100092 bpf pflogd 54458 208058 1 0 3 0x80 sbwait pflogd 50246 499026 23415 73 3 0x1100090 kqread syslogd 23415 423976 1 0 3 0x100082 sbwait syslogd 68103 354478 1 0 3 0x100080 kqread resolvd 75963 358191 4165 77 3 0x100092 kqread dhcpleased 8753 337906 4165 77 3 0x100092 kqread dhcpleased 4165 324787 1 0 3 0x80 kqread dhcpleased 14621 234300 0 0 3 0x14200 bored smr 86813 256957 0 0 3 0x14200 pgzero zerothread 21134 430631 0 0 3 0x14200 aiodoned aiodoned 73638 65263 0 0 3 0x14200 syncer update 93945 106715 0 0 3 0x14200 cleaner cleaner 41807 28047 0 0 3 0x14200 reaper reaper 49364 200474 0 0 3 0x14200 pgdaemon pagedaemon 79770 508628 0 0 3 0x14200 bored viomb 63630 114475 0 0 3 0x40014200 acpi0 acpi0 44569 52653 0 0 3 0x40014200 idle1 19606 443972 0 0 3 0x14200 bored softnet1 7266 215892 0 0 3 0x14200 bored softnet0 85152 447395 0 0 3 0x14200 bored systqmp 16380 197726 0 0 3 0x14200 bored systq 20875 259075 0 0 3 0x14200 tmoslp softclockmp 70216 413670 0 0 3 0x40014200 tmoslp softclock 95360 483920 0 0 3 0x40014200 idle0 1 494409 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 35804 (syz-executor) thread 0xffff8000313df248 (430129) exclusive rwlock uobjlk r = 0 (0xfffffd806a3eec50) #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:649 #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 (0xfffffd807e902308) #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:1880 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #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 72096 (syz-executor) thread 0xffff8000313de020 (8817) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838ec400) #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:369 #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:837 #10 ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 #11 ktrops+0x26c sys/kern/kern_ktrace.c:573 #12 doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] #12 doktrace+0x6bd sys/kern/kern_ktrace.c:517 #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:775 #15 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11059 12094K 12299K 166960K 12203 0 pcb 18 13K 14K 166960K 113 0 rtable 239 7K 7K 166960K 357 0 pf 34 17K 18K 166960K 45 0 ifaddr 43 7K 7K 166960K 49 0 ifgroup 55 2K 2K 166960K 64 0 sysctl 2 1K 9K 166960K 6 0 counters 70 37K 37K 166960K 78 0 ioctlops 0 0K 4K 166960K 1473 0 iov 0 0K 0K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1339 84K 84K 166960K 1390 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 190 0 sigio 0 0K 0K 166960K 3 0 proc 70 115K 147K 166960K 538 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 3 0 in_multi 99 7K 7K 166960K 100 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 375 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 240 159K 173K 166960K 3516 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 43 86K 103K 166960K 1319 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 12 0K 1K 166960K 31 0 temp 39 8675K 8739K 166960K 4437 0 kqueue 14 22K 28K 166960K 34 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 34 0 31 1 0 1 1 0 8 0 rtentry 176 113 0 3 6 0 6 6 0 8 0 unpcb 144 67 0 46 2 0 2 2 0 8 1 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 23 0 17 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 207 0 197 7 0 7 7 0 8 5 nd6 152 24 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 3 0 3 1 0 1 1 0 8 1 pppxif 1504 1 0 1 1 0 1 1 0 8 1 pffrag 232 1 0 1 1 0 1 1 0 482 1 pffrnode 88 1 0 1 1 0 1 1 0 8 1 pffrent 40 2 0 2 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 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 458 0 6 29 0 29 29 0 8 0 art_table 40 459 0 6 5 0 5 5 0 8 0 art_node 32 113 0 13 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1665 0 150 96 0 96 96 0 8 0 ffsino 296 1665 0 150 117 0 117 117 0 8 0 nchpl 144 1941 0 240 64 0 64 64 0 8 0 vnodes 216 1764 0 0 98 0 98 98 0 8 0 namei 1024 6051 0 6051 1 0 1 1 0 8 1 percpumem 16 54 0 4 1 0 1 1 0 8 0 kstatmem 264 32 0 6 3 0 3 3 0 8 1 scxspl 216 6092 0 6092 3 1 2 2 1 8 2 plimitpl 152 39 0 20 1 0 1 1 0 8 0 sigapl 424 500 0 452 7 0 7 7 0 8 1 knotepl 120 304 0 0 10 0 10 10 0 8 0 kqueuepl 224 72 0 61 1 0 1 1 0 8 0 pipepl 344 117 0 90 3 0 3 3 0 8 0 fdescpl 528 483 0 451 3 0 3 3 0 8 0 filepl 160 1967 0 1738 13 0 13 13 0 8 2 lockfpl 104 23 0 15 1 0 1 1 0 8 0 lockfspl 48 11 0 6 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 125 0 112 1 0 1 1 0 8 0 zombiepl 144 452 0 452 1 0 1 1 0 8 1 processpl 1232 500 0 452 5 0 5 5 0 8 1 procpl 664 594 0 537 6 0 6 6 0 8 0 sockpl 752 310 0 276 12 0 12 12 0 8 7 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 127 0 0 16 0 16 16 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 159 0 0 10 0 10 10 0 8 0 bufpl 280 2381 0 125 162 0 162 162 0 8 0 anonpl 32 5400 0 0 44 0 44 44 0 246 0 amapchunkpl 152 10178 0 9687 34 0 34 34 0 158 14 amappl16 200 944 0 919 4 2 2 4 0 8 0 amappl15 192 4 0 3 1 0 1 1 0 8 0 amappl14 184 18 0 18 1 1 0 1 0 8 0 amappl13 176 508 0 507 1 0 1 1 0 8 0 amappl12 168 844 0 801 3 0 3 3 0 8 0 amappl11 160 5 0 5 2 1 1 1 0 8 1 amappl10 152 60 0 46 1 0 1 1 0 8 0 amappl9 144 297 0 297 1 1 0 1 0 8 0 amappl8 136 39 0 37 1 0 1 1 0 8 0 amappl7 128 80 0 79 1 0 1 1 0 8 0 amappl6 120 271 0 258 1 0 1 1 0 8 0 amappl5 112 74 0 64 1 0 1 1 0 8 0 amappl4 104 429 0 399 1 0 1 1 0 8 0 amappl3 96 1594 0 1502 4 1 3 3 0 8 0 amappl2 88 595 0 519 2 0 2 2 0 8 0 amappl1 80 9593 0 9005 14 0 14 14 0 8 0 amappl 88 2756 0 2595 5 0 5 5 0 92 0 uvmvnodes 80 104 0 0 3 0 3 3 0 8 0 dma8192 8192 1 0 1 1 0 1 1 0 8 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 484 0 452 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 484 0 452 1 0 1 1 0 8 0 vmmpekpl 168 5787 0 5757 2 0 2 2 0 8 0 vmmpepl 168 38221 0 36285 90 0 90 90 0 357 2 vmsppl 488 483 0 452 5 0 5 5 0 8 0 rwobjpl 80 13170 0 12155 24 0 24 24 0 8 0 pdppl 4096 975 0 904 95 22 73 83 0 8 2 pvpl 32 11781 0 0 99 3 96 96 0 265 0 pmappl 256 483 0 452 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 264 0 24 7 0 7 7 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83834ff0) 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_pc() at __sanitizer_cov_trace_pc softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff838ebc00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff838ebc00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 uvm_fault(fffffd807e902208,c31f3632000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650 upageflttrap(ffff80003c42dbb0,c31f3632000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c42dbb0) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7b7a6c16bbd0, count: 2 ddb{0}> trace x86_ipi_db(ffffffff83834ff0) 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_pc() at __sanitizer_cov_trace_pc softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff838ebc00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff838ebc00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 uvm_fault(fffffd807e902208,c31f3632000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650 upageflttrap(ffff80003c42dbb0,c31f3632000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c42dbb0) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7b7a6c16bbd0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at ktrops+0x58: movq 0x10(%r14),%r14 ktrops(ffff8000313de020,ffffffffffffffff,0,a0c7df9f,fffffd806a2a9db0,fffffd80097fd7b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff8000313de020,ffffffffffffffff,0,a0c7df9f,fffffd806a2a9db0,fffffd80097fd7b8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a2a9db0,4,20c7df9f,0,ffff8000313de020) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a2a9db0,4,20c7df9f,0,ffff8000313de020) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff8000313de020,ffff80003c40b160,ffff80003c40b0b0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c40b160) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c40b160) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8e8dd58ff30, count: 10 ddb{1}> trace ktrops(ffff8000313de020,ffffffffffffffff,0,a0c7df9f,fffffd806a2a9db0,fffffd80097fd7b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff8000313de020,ffffffffffffffff,0,a0c7df9f,fffffd806a2a9db0,fffffd80097fd7b8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a2a9db0,4,20c7df9f,0,ffff8000313de020) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a2a9db0,4,20c7df9f,0,ffff8000313de020) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff8000313de020,ffff80003c40b160,ffff80003c40b0b0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c40b160) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c40b160) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8e8dd58ff30, count: -5