witness: lock order reversal: 1st 0xffffffff83997888 pf_lock (pf_lock) 2nd 0xffffffff8393ce20 netlock (netlock) lock order [1] pf_lock (pf_lock) -> [2] netlock (netlock) #0 rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 #1 uvn_io+0x54c sys/uvm/uvm_vnode.c:1243 #2 uvn_get+0x31d sys/uvm/uvm_vnode.c:1075 #3 uvm_fault_lower_io+0x2ce sys/uvm/uvm_fault.c:1612 #4 uvm_fault_lower+0x28d sys/uvm/uvm_fault.c:1381 #5 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #6 kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:285 #7 kerntrap+0x19d sys/arch/amd64/amd64/trap.c:532 #8 alltraps_kern_meltdown+0x7b #9 _copyin+0x5b #10 pfioctl+0x1377 sys/net/pf_ioctl.c:3284 #11 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #12 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537 #13 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #14 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #14 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791 #15 Xsyscall+0x128 lock order [2] netlock (netlock) -> [1] pf_lock (pf_lock) #0 rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 #1 pfi_attach_ifgroup+0x2a sys/net/pf_if.c:357 #2 if_addgroup+0x2f8 if_creategroup sys/net/if.c:3059 [inline] #2 if_addgroup+0x2f8 sys/net/if.c:3097 #3 if_attachsetup+0xcf sys/net/if.c:512 #4 if_attach+0x6d sys/net/if.c:604 #5 vio_attach+0x1853 sys/dev/pv/if_vio.c:935 #6 config_attach+0x449 sys/kern/subr_autoconf.c:421 #7 virtio_pci_attach+0x52c sys/dev/pci/virtio_pci.c:675 #8 config_attach+0x449 sys/kern/subr_autoconf.c:421 #9 pci_probe_device+0x8e5 sys/dev/pci/pci.c:574 #10 pci_enumerate_bus+0x368 sys/dev/pci/pci.c:877 #11 config_attach+0x449 sys/kern/subr_autoconf.c:421 #12 acpipci_attach_bus+0x381 sys/arch/amd64/pci/acpipci.c:257 #13 acpipci_attach_busses+0x93 sys/arch/amd64/pci/acpipci.c:265 #14 mainbus_attach+0x304 sys/arch/amd64/amd64/mainbus.c:222 #15 config_attach+0x449 sys/kern/subr_autoconf.c:421 #16 cpu_configure+0x47 sys/arch/amd64/amd64/autoconf.c:124 #17 main+0x4c7 sys/kern/init_main.c:345 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> show kasan No such command ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(ffffffff8393ce20,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 rw_do_enter_write(ffffffff8393ce08,0) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 uvn_io(fffff3000dd8ad30,ffff8000377efaf8,1,202,0) at uvn_io+0x54c sys/uvm/uvm_vnode.c:1243 uvn_get(fffff3000dd8ad30,0,ffff8000377efbc8,ffff8000377efbac,0,1,4b67a8139d73202a,1) at uvn_get+0x31d sys/uvm/uvm_vnode.c:1075 uvm_fault_lower_io(ffff8000377efde0,ffff8000377efe18,ffff8000377efc60,ffff8000377efc48) at uvm_fault_lower_io+0x2ce sys/uvm/uvm_fault.c:1612 uvm_fault_lower(ffff8000377efde0,ffff8000377efe18,ffff8000377efd60) at uvm_fault_lower+0x28d sys/uvm/uvm_fault.c:1381 uvm_fault(fffff3006cd3d7c0,200000001000,0,1) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 kpageflttrap(ffff8000377eff90,200000001200) at kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:285 kerntrap(ffff8000377eff90) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:532 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b _copyin() at _copyin+0x5b pfioctl(14900,c4504441,ffff800001613000,1,ffff80002a24a7e0) at pfioctl+0x1377 sys/net/pf_ioctl.c:3284 VOP_IOCTL(fffff300663297b0,c4504441,ffff800001613000,1,fffff300097fd820,ffff80002a24a7e0) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffff30066601c28,c4504441,ffff800001613000,ffff80002a24a7e0) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80002a24a7e0,ffff8000377f0b40,ffff8000377f0a90) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff8000377f0b40) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000377f0b40) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc3406ed3fc0, count: -18 ddb{0}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff8000377ef8b0 rbx 0 rdx 0xffff800001615280 rcx 0xffff80002a24a7e0 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff8000377ef790 r9 0x8080808080808080 r10 0x3a5b54e0f2f5d87b r11 0xdfb0750c887a4c3a r12 0xfffff300040de2c0 r13 0xfffff300048cd130 r14 0x3 r15 0xffffffff83543cab substchar+0xbdc1 rip 0xffffffff8294dcc5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000377ef8a0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=362772 pid=76164 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=65, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045fe8020,0xffff80002a24a2c0 process=0xffff800045fecea0 user=0xffff8000377eb000, vmspace=0xfffff3006cd3d7c0 estcpu=15, cpticks=107, pctcpu=1.7, user=0, sys=107, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 76164 49007 66104 0 7 0 0 syz-executor *76164 362772 66104 0 7 0 0x4000000 syz-executor 76164 348690 66104 0 2 0 0x4000080 syz-executor 84184 290308 89950 0 3 0 0x80 nanoslp syz-executor 84184 365398 89950 0 3 0 0x4000080 fsleep syz-executor 84184 522912 89950 0 3 0 0x4000080 pipewr syz-executor 66104 479115 69919 0 3 0x2 0x80 nanoslp syz-executor 24869 188908 69919 0 3 0x2 0x80 piperd syz-executor 40981 134391 69919 0 3 0x2 0x80 piperd syz-executor 89950 10498 69919 0 3 0x2 0x80 nanoslp syz-executor 39105 449843 69919 0 3 0x2 0x80 piperd syz-executor 16676 271057 69919 0 3 0x2 0x80 piperd syz-executor 93645 446087 69919 0 3 0x2 0x80 piperd syz-executor 69919 225886 95978 0 3 0x2 0x80 wait syz-executor 95978 435651 40586 0 3 0x100002 0x88 sigsusp ksh 40586 448954 59118 0 3 0x10 0x88 kqread sshd-session 59118 135141 6634 0 3 0x12 0x80 kqread sshd-session 9133 278335 1 0 3 0x100003 0x80 ttyin getty 6634 220580 1 0 3 0 0x88 kqread sshd 38809 408341 97887 74 3 0x1100012 0x80 bpf pflogd 97887 439927 1 0 3 0 0x80 sbwait pflogd 38350 72876 53265 73 3 0x1100010 0x80 kqread syslogd 53265 495937 1 0 3 0x100002 0x80 sbwait syslogd 18870 372267 1 0 3 0x100000 0x80 kqread resolvd 82695 19663 55140 77 3 0x100012 0x80 kqread dhcpleased 58276 455862 55140 77 3 0x100012 0x80 kqread dhcpleased 55140 268626 1 0 3 0 0x80 kqread dhcpleased 65600 411001 0 0 3 0x14000 0x200 bored smr 28663 186615 0 0 3 0x14000 0x200 pgzero zerothread 72868 421548 0 0 3 0x14000 0x200 aiodoned aiodoned 31229 60836 0 0 3 0x14000 0x200 syncer update 29134 223986 0 0 3 0x14000 0x200 cleaner cleaner 86639 387220 0 0 3 0x14000 0x200 reaper reaper 51923 207643 0 0 3 0x14000 0x200 pgdaemon pagedaemon 50492 209267 0 0 3 0x14000 0x200 bored viomb 37336 160622 0 0 3 0x14000 0x40000200 acpi0 acpi0 95749 522105 0 0 3 0x14000 0x40000200 idle1 15107 259805 0 0 3 0x14000 0x200 bored softnet1 7517 198923 0 0 3 0x14000 0x200 bored softnet0 85101 315 0 0 3 0x14000 0x200 smrbar systqmp 74173 50695 0 0 3 0x14000 0x200 bored systq 74104 297330 0 0 3 0x14000 0x200 tmoslp softclockmp 46176 249583 0 0 3 0x14000 0x40000200 tmoslp softclock 19121 514722 0 0 3 0x14000 0x40000200 idle0 1 241064 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks Process 76164 (syz-executor) thread 0xffff80002a24a7e0 (362772) exclusive rwlock pf_lock r = 0 (0xffffffff83997888) #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 pfioctl+0x1342 sys/net/pf_ioctl.c:3284 #3 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #4 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537 #5 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791 #7 Xsyscall+0x128 exclusive rwlock pfioctl_rw r = 0 (0xffffffff83997918) #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 pfioctl+0x1d4 sys/net/pf_ioctl.c:2064 #3 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #4 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537 #5 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791 #7 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a06600) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 vn_ioctl+0x4d sys/kern/vfs_vnops.c:520 #2 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791 #4 Xsyscall+0x128 Process 85101 (systqmp) thread 0xffff800045ffecf8 (315) shared rwlock systqmp r = 0 (0xffffffff8391c238) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11053 12090K 12214K 166960K 12166 0 pcb 17 12K 12K 166960K 19 0 rtable 215 6K 7K 166960K 391 0 pf 32 17K 21K 166960K 52 0 ifaddr 39 6K 7K 166960K 49 0 ifgroup 51 2K 2K 166960K 59 0 sysctl 2 1K 9K 166960K 6 0 counters 68 36K 37K 166960K 72 0 ioctlops 1 2K 4K 166960K 1489 0 iov 0 0K 13K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1291 81K 82K 166960K 1385 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 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 12 41K 93K 166960K 170 0 proc 70 115K 164K 166960K 584 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 5 0 in_multi 88 5K 6K 166960K 112 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 407 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 203 178K 186K 166960K 3324 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 37 74K 106K 166960K 1382 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 11 0K 2K 166960K 31 0 temp 33 9118K 9124K 166960K 3753 0 kqueue 13 20K 22K 166960K 29 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 43 0 40 1 0 1 1 0 8 0 rtentry 176 122 0 23 6 0 6 6 0 8 1 unpcb 144 47 0 28 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 20 0 16 2 0 2 2 0 8 1 arp 136 20 0 4 1 0 1 1 0 8 0 inpcb 328 99 0 91 2 0 2 2 0 8 1 nd6 152 27 0 6 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 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 pfstitem 24 29 0 0 1 0 1 1 0 8 0 pfstkey 128 29 0 0 1 0 1 1 0 8 0 pfstate 448 29 0 0 4 0 4 4 0 8 0 pfrule 1360 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 497 0 44 29 0 29 29 0 8 0 art_table 40 498 0 44 5 0 5 5 0 8 0 art_node 32 122 0 22 1 0 1 1 0 8 0 semapl 72 3 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1610 0 140 93 0 93 93 0 8 0 ffsino 296 1610 0 140 114 0 114 114 0 8 0 nchpl 144 1829 0 130 64 0 64 64 0 8 0 vnodes 216 1716 0 0 96 0 96 96 0 8 0 namei 1024 6544 0 6544 4 1 3 3 0 8 3 percpumem 16 52 0 2 1 0 1 1 0 8 0 kstatmem 264 29 0 4 2 0 2 2 0 8 0 scxspl 216 6428 0 6428 4 3 1 3 1 8 1 plimitpl 152 35 0 18 1 0 1 1 0 8 0 sigapl 424 494 0 452 7 0 7 7 0 8 1 knotepl 120 255 0 0 8 0 8 8 0 8 0 kqueuepl 224 27 0 18 1 0 1 1 0 8 0 pipepl 344 134 0 106 3 0 3 3 0 8 0 fdescpl 528 478 0 452 3 0 3 3 0 8 0 filepl 160 1731 0 1516 10 0 10 10 0 8 0 lockfpl 104 16 0 14 1 0 1 1 0 8 0 lockfspl 48 9 0 7 1 0 1 1 0 8 0 sessionpl 144 27 0 18 1 0 1 1 0 8 0 pgrppl 48 36 0 19 1 0 1 1 0 8 0 ucredpl 104 111 0 98 1 0 1 1 0 8 0 zombiepl 144 453 0 452 1 0 1 1 0 8 0 processpl 1240 494 0 452 5 0 5 5 0 8 1 procpl 664 535 0 489 6 0 6 6 0 8 1 sockpl 752 190 0 160 5 0 5 5 0 8 2 mcl64k 65536 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 29 0 0 4 0 4 4 0 8 0 mextrefs 64 30 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 220 0 0 14 0 14 14 0 8 0 bufpl 272 2394 0 105 153 0 153 153 0 8 0 anonpl 32 7522 0 0 61 0 61 61 0 247 0 amapchunkpl 152 8891 0 8524 21 0 21 21 0 158 1 amappl16 200 1676 0 1656 14 3 11 14 0 8 9 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 452 0 451 1 0 1 1 0 8 0 amappl13 176 127 0 115 1 0 1 1 0 8 0 amappl12 168 784 0 759 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 1 0 1 0 8 0 amappl10 152 65 0 51 1 0 1 1 0 8 0 amappl9 144 304 0 304 1 1 0 1 0 8 0 amappl8 136 123 0 121 1 0 1 1 0 8 0 amappl7 128 151 0 138 1 0 1 1 0 8 0 amappl6 120 168 0 167 1 0 1 1 0 8 0 amappl5 112 117 0 106 1 0 1 1 0 8 0 amappl4 104 299 0 280 1 0 1 1 0 8 0 amappl3 96 1636 0 1565 3 0 3 3 0 8 0 amappl2 88 600 0 529 2 0 2 2 0 8 0 amappl1 80 10825 0 10239 15 0 15 15 0 8 2 amappl 88 2555 0 2426 4 0 4 4 0 92 0 uvmvnodes 80 102 0 0 3 0 3 3 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 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 478 0 452 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 478 0 452 1 0 1 1 0 8 0 vmmpekpl 168 6008 0 5960 3 0 3 3 0 8 0 vmmpepl 168 40401 0 38758 97 0 97 97 0 357 14 vmsppl 488 477 0 452 5 0 5 5 0 8 1 rwobjpl 80 15002 0 14020 28 1 27 27 0 8 2 pdppl 4096 963 0 904 101 24 77 85 0 8 18 pvpl 32 14581 0 0 118 0 118 118 0 265 0 pmappl 256 477 0 452 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 434 0 27 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(ffffffff8393ce20,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 rw_do_enter_write(ffffffff8393ce08,0) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 uvn_io(fffff3000dd8ad30,ffff8000377efaf8,1,202,0) at uvn_io+0x54c sys/uvm/uvm_vnode.c:1243 uvn_get(fffff3000dd8ad30,0,ffff8000377efbc8,ffff8000377efbac,0,1,4b67a8139d73202a,1) at uvn_get+0x31d sys/uvm/uvm_vnode.c:1075 uvm_fault_lower_io(ffff8000377efde0,ffff8000377efe18,ffff8000377efc60,ffff8000377efc48) at uvm_fault_lower_io+0x2ce sys/uvm/uvm_fault.c:1612 uvm_fault_lower(ffff8000377efde0,ffff8000377efe18,ffff8000377efd60) at uvm_fault_lower+0x28d sys/uvm/uvm_fault.c:1381 uvm_fault(fffff3006cd3d7c0,200000001000,0,1) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 kpageflttrap(ffff8000377eff90,200000001200) at kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:285 kerntrap(ffff8000377eff90) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:532 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b _copyin() at _copyin+0x5b pfioctl(14900,c4504441,ffff800001613000,1,ffff80002a24a7e0) at pfioctl+0x1377 sys/net/pf_ioctl.c:3284 VOP_IOCTL(fffff300663297b0,c4504441,ffff800001613000,1,fffff300097fd820,ffff80002a24a7e0) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffff30066601c28,c4504441,ffff800001613000,ffff80002a24a7e0) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80002a24a7e0,ffff8000377f0b40,ffff8000377f0a90) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff8000377f0b40) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000377f0b40) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc3406ed3fc0, count: -18 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff80002999dff0) 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+0xf kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:153 syscall(ffff80003a7bcee0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80003a7bcee0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77b8c50883c0, count: -6