kernel: protection fault trap, code=0 Stopped at bpfdetach+0x70: movq 0(%r15),%r12 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace bpfdetach(ffff800001488800) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff800001488800) at if_detach+0x1bb sys/net/if.c:1226 tun_clone_destroy(ffff800001488800) at tun_clone_destroy+0x2ce sys/net/if_tun.c:340 if_clone_destroy(ffff80003c4605f0) at if_clone_destroy+0x1d5 sys/net/if.c:1415 ifioctl(ffff8000014f0ee0,80206979,ffff80003c4605f0,ffff800030fe2fc0) at ifioctl+0x59d sys/net/if.c:2092 sys_ioctl(ffff800030fe2fc0,ffff80003c4607d0,ffff80003c460720) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80003c4607d0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4607d0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x45c0d56ddf0, count: -8 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c460410 rbx 0x80206979 __kernel_virt_to_phys+0x206979 rdx 0 rcx 0xffff800030fe2fc0 rax 0xffffffff837e5ff0 cpu_info_full_primary+0x1ff0 r8 0 r9 0xffffffffffffffff r10 0x6def5dcf7db72545 r11 0x4ffae81d2b37de5b r12 0xdeaf0002deaf4152 r13 0xffff800001488e00 r14 0xffff800001488800 r15 0xdeaf0002deaf4152 rip 0xffffffff822c5580 bpfdetach+0x70 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c4603e0 ss 0x10 bpfdetach+0x70: movq 0(%r15),%r12 ddb{0}> show proc PROC (syz-executor) tid=85727 pid=92556 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800030fe27f8,0xffff800030fdbcc0 process=0xffff8000fffec9b8 user=0xffff80003c45b000, vmspace=0xfffffd800e6665e8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 2623 259494 65438 0 2 0 syz-executor 2623 502098 65438 0 2 0x4000000 syz-executor 99615 523313 42246 0 2 0 syz-executor 99615 187931 42246 0 2 0x4000000 syz-executor 2804 225301 93494 0 2 0 syz-executor 2804 162808 93494 0 3 0x4000080 fsleep syz-executor 2804 3661 93494 0 2 0x4000000 syz-executor 24025 405923 92032 0 2 0 syz-executor 24025 240289 92032 0 2 0x4000000 syz-executor 92556 49818 15138 0 3 0x80 nanoslp syz-executor *92556 85727 15138 0 7 0x4000000 syz-executor 92556 445137 15138 0 3 0x4000080 fsleep syz-executor 6452 217518 0 0 3 0x14200 acct acct 15138 309367 76559 0 3 0x82 nanoslp syz-executor 93494 84470 76559 0 2 0x3 syz-executor 49098 329366 76559 0 2 0x3 syz-executor 65438 357396 76559 0 2 0x3 syz-executor 92032 59402 76559 0 2 0x3 syz-executor 83888 252913 76559 0 7 0x3 syz-executor 42246 145386 76559 0 2 0x3 syz-executor 92823 172434 76559 0 2 0x3 syz-executor 76559 404764 92640 0 3 0x82 kqread syz-executor 92640 13783 18482 0 3 0x10008a sigsusp ksh 18482 92442 17273 0 3 0x98 kqread sshd-session 17273 73220 51688 0 3 0x92 kqread sshd-session 90713 520760 1 0 3 0x100083 ttyopn getty 51688 418760 1 0 3 0x88 kqread sshd 11037 74455 51855 74 3 0x1100092 bpf pflogd 51855 66560 1 0 3 0x80 sbwait pflogd 34454 419045 58323 73 3 0x1100090 kqread syslogd 58323 300097 1 0 3 0x100082 sbwait syslogd 71987 299458 1 0 2 0x100001 resolvd 12177 435096 36115 77 2 0x100013 dhcpleased 36333 480590 36115 77 3 0x100092 kqread dhcpleased 36115 396291 1 0 3 0x80 kqread dhcpleased 4293 104935 0 0 3 0x14200 bored smr 15569 328654 0 0 2 0x14200 zerothread 70814 362421 0 0 3 0x14200 aiodoned aiodoned 39432 251385 0 0 3 0x14200 syncer update 83377 302252 0 0 3 0x14200 cleaner cleaner 46405 295159 0 0 2 0x14200 reaper 38078 13377 0 0 3 0x14200 pgdaemon pagedaemon 51758 39656 0 0 3 0x14200 bored viomb 20963 144133 0 0 3 0x40014200 acpi0 acpi0 25039 227274 0 0 3 0x40014200 idle1 99289 463226 0 0 3 0x14200 bored softnet1 41731 507701 0 0 3 0x14200 bored softnet0 46189 17414 0 0 3 0x14200 bored systqmp 47182 498423 0 0 3 0x14200 bored systq 20517 32709 0 0 3 0x14200 tmoslp softclockmp 21986 406369 0 0 3 0x40014200 tmoslp softclock 54810 465159 0 0 3 0x40014200 idle0 1 473841 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 2623 (syz-executor) thread 0xffff800030fe2560 (502098) exclusive rwlock vmmaplk r = 0 (0xfffffd800b0274d0) #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:1902 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #5 kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:283 #6 kerntrap+0x19c sys/arch/amd64/amd64/trap.c:510 #7 alltraps_kern_meltdown+0x7b #8 copyout+0x64 #9 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #10 Xsyscall+0x128 Process 2804 (syz-executor) thread 0xffff800030fe3258 (3661) exclusive rwlock vmmaplk r = 0 (0xfffffd800e666500) #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:1902 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #7 recall_trap+0x8 Process 24025 (syz-executor) thread 0xffff800030fdb780 (240289) exclusive rwlock fdlock r = 0 (0xffff8000fffeaac0) #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 sys_socket+0x203 sys/kern/uipc_syscalls.c:106 #3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #4 Xsyscall+0x128 Process 92556 (syz-executor) thread 0xffff800030fe2fc0 (85727) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839682b0) #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 rw_do_enter_write+0x1dc sys/kern/kern_rwlock.c:298 #4 lf_purgelocks+0x2f sys/kern/vfs_lockf.c:731 #5 vgonel+0x47e sys/kern/vfs_subr.c:1217 #6 vop_generic_revoke+0x3ea sys/kern/vfs_default.c:124 #7 VOP_REVOKE+0x65 sys/kern/vfs_vops.c:291 #8 vdevgone+0x17b sys/kern/vfs_subr.c:-1 #9 bpfsdetach+0x155 sys/net/bpf.c:1794 #10 bpfdetach+0xa6 sys/net/bpf.c:-1 #11 if_detach+0x1bb sys/net/if.c:1226 #12 tun_clone_destroy+0x2ce sys/net/if_tun.c:340 #13 if_clone_destroy+0x1d5 sys/net/if.c:1415 #14 ifioctl+0x59d sys/net/if.c:2092 #15 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #16 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #16 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #17 Xsyscall+0x128 exclusive rwlock clonelk r = 0 (0xffffffff83809358) #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 if_clone_destroy+0x67 sys/net/if.c:-1 #3 ifioctl+0x59d sys/net/if.c:2092 #4 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #6 Xsyscall+0x128 Process 46405 (reaper) thread 0xffff8000ffffd9f8 (295159) exclusive rwlock kmmaplk r = 0 (0xffffffff839a6268) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvm_unmap+0x7d sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:831 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1aa sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10211 11186K 11318K 166960K 12277 0 pcb 18 16K 17K 166960K 282 0 rtable 180 8K 8K 166960K 551 0 pf 34 17K 24K 166960K 115 0 ifaddr 33 5K 7K 166960K 81 0 ifgroup 51 2K 2K 166960K 117 0 sysctl 4 1K 9K 166960K 17 0 counters 66 36K 37K 166960K 144 0 ioctlops 0 0K 4K 166960K 1694 0 iov 0 0K 28K 166960K 101 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1518 95K 96K 166960K 2517 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 22 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 69 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 236K 166960K 1035 0 sigio 1 0K 0K 166960K 18 0 proc 72 115K 163K 166960K 683 0 subproc 72 4K 4K 166960K 82 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 258 0 in_multi 64 4K 7K 166960K 141 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 622 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 227 159K 174K 166960K 11389 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 41 82K 108K 166960K 2222 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 69 0 NDP 11 0K 2K 166960K 56 0 temp 81 8660K 8746K 166960K 63216 0 kqueue 14 22K 30K 166960K 185 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 120 134 0 131 2 1 1 2 0 8 0 rtentry 176 139 0 68 6 0 6 6 0 8 0 unpcb 144 868 0 851 6 4 2 4 0 8 1 syncache 336 9 0 9 3 2 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 2 0 2 2 1 1 1 0 8 1 tcpcb 736 281 0 274 7 0 7 7 0 8 6 arp 136 22 0 7 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 2 0 2 1 1 0 1 0 8 0 inpcb 328 992 0 980 10 3 7 7 0 8 5 ip6q 72 2 0 1 1 0 1 1 0 8 0 ip6af 40 4 0 3 1 0 1 1 0 8 0 nd6 152 29 0 13 1 0 1 1 0 8 0 pkpcb 40 7 0 7 3 2 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 33 0 33 1 0 1 1 0 8 1 pppxif 1504 2 0 2 1 1 0 1 0 8 0 pfstscr 40 4 0 4 3 2 1 1 0 8 1 pffrag 232 10 0 3 2 1 1 1 0 482 0 pffrnode 88 10 0 3 2 1 1 1 0 8 0 pffrent 40 20 0 13 2 1 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 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 61 0 25 1 0 1 1 0 8 0 pfstkey 128 68 0 32 2 0 2 2 0 8 0 pfstate 384 65 0 29 5 0 5 5 0 8 0 pfrule 1344 29 0 23 2 1 1 2 0 8 0 rttmr 136 3 0 3 2 2 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 636 0 339 31 6 25 31 0 8 3 art_table 40 638 0 339 5 0 5 5 0 8 0 art_node 32 137 0 73 1 0 1 1 0 8 0 semapl 112 61 0 51 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 3436 0 1929 96 0 96 96 0 8 0 ffsino 296 3436 0 1929 118 1 117 118 0 8 0 nchpl 144 4925 0 3223 64 0 64 64 0 8 0 rtmask 32 8 0 8 2 1 1 1 0 8 1 vnodes 216 4118 0 0 229 0 229 229 0 8 0 namei 1024 17032 0 17032 2 1 1 2 0 8 1 percpumem 16 87 0 39 1 0 1 1 0 8 0 kstatmem 264 78 0 52 3 0 3 3 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 216 17531 0 17531 13 10 3 8 1 8 3 plimitpl 152 297 0 279 1 0 1 1 0 8 0 sigapl 424 1365 0 1316 9 3 6 8 0 8 0 knotepl 120 781 0 0 24 0 24 24 0 8 0 kqueuepl 224 331 0 321 3 2 1 3 0 8 0 pipepl 344 183 0 156 3 0 3 3 0 8 0 fdescpl 528 1326 0 1296 3 0 3 3 0 8 0 filepl 160 8955 0 8739 20 6 14 16 0 8 1 lockfpl 104 495 0 493 2 1 1 2 0 8 0 lockfspl 48 161 0 159 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 129 0 112 1 0 1 1 0 8 0 ucredpl 104 1951 0 1937 1 0 1 1 0 8 0 zombiepl 144 1923 0 1920 2 1 1 1 0 8 0 processpl 1232 1365 0 1316 7 3 4 6 0 8 0 procpl 664 2980 0 2921 8 2 6 8 0 8 0 sosppl 176 9 0 9 2 2 0 1 0 8 0 sockpl 752 2024 0 1992 16 5 11 11 0 8 6 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 15 0 15 15 0 8 0 mcl2k 2048 55 0 0 7 0 7 7 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 1171 0 0 75 1 74 75 0 8 0 bufpl 280 6872 0 735 439 0 439 439 0 8 0 anonpl 32 9330 0 0 76 1 75 75 0 246 0 amapchunkpl 152 38140 0 37696 29 2 27 28 0 158 4 amappl16 200 3654 0 3625 33 18 15 15 0 8 10 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 8 0 8 2 2 0 1 0 8 0 amappl13 176 458 0 457 1 0 1 1 0 8 0 amappl12 168 1708 0 1667 3 0 3 3 0 8 0 amappl11 160 10 0 10 2 2 0 1 0 8 0 amappl10 152 56 0 42 1 0 1 1 0 8 0 amappl9 144 258 0 258 1 1 0 1 0 8 0 amappl8 136 28 0 26 1 0 1 1 0 8 0 amappl7 128 87 0 86 1 0 1 1 0 8 0 amappl6 120 293 0 279 1 0 1 1 0 8 0 amappl5 112 75 0 64 1 0 1 1 0 8 0 amappl4 104 443 0 411 1 0 1 1 0 8 0 amappl3 96 6645 0 6560 4 1 3 3 0 8 0 amappl2 88 1457 0 1381 2 0 2 2 0 8 0 amappl1 80 13526 0 12935 15 1 14 15 0 8 0 amappl 88 10452 0 10303 5 0 5 5 0 92 0 uvmvnodes 80 4118 0 0 85 0 85 85 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 0 1 1 0 8 1 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 7 0 7 2 2 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1326 0 1296 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1326 0 1296 1 0 1 1 0 8 0 vmmpekpl 168 12466 0 12423 3 0 3 3 0 8 0 vmmpepl 168 90010 0 88142 106 10 96 98 0 357 2 vmsppl 488 1325 0 1294 7 2 5 5 0 8 0 rwobjpl 80 29802 0 24766 108 0 108 108 0 8 0 pdppl 4096 2660 0 2588 108 36 72 86 0 8 0 pvpl 32 16477 0 0 133 0 133 133 0 265 0 pmappl 256 1325 0 1294 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 358 0 48 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace bpfdetach(ffff800001488800) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff800001488800) at if_detach+0x1bb sys/net/if.c:1226 tun_clone_destroy(ffff800001488800) at tun_clone_destroy+0x2ce sys/net/if_tun.c:340 if_clone_destroy(ffff80003c4605f0) at if_clone_destroy+0x1d5 sys/net/if.c:1415 ifioctl(ffff8000014f0ee0,80206979,ffff80003c4605f0,ffff800030fe2fc0) at ifioctl+0x59d sys/net/if.c:2092 sys_ioctl(ffff800030fe2fc0,ffff80003c4607d0,ffff80003c460720) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80003c4607d0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4607d0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x45c0d56ddf0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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(ffffffff839680a8) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839680a8) at __mp_lock+0x199 sys/kern/kern_lock.c:165 ktrsyscall(ffff8000ffffdc90,b,20,ffff80002a336140) at ktrsyscall+0x2c7 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff8000ffffdc90,b,20,ffff80002a336140) at ktrsyscall+0x2c7 sys/kern/kern_ktrace.c:183 syscall(ffff80002a336140) at syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a336140) at syscall+0x304 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74553999c0a0, count: -7