uvm_fault(0xfffffd8066e763e8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81c20aa0 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a304730 gsbase 0xffff8000299ddff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81c20aa0 Starting stack trace... panic(ffffffff833365ee) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a304680) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000148d000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:579 dtclose(11e5f,81,2000,ffff8000fffe67d8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffe67d8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a304830) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807612b8b0,81,fffffd807f7d36e8,ffff8000fffe67d8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8066edbba8,ffff8000fffe67d8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8066edbba8,ffff8000fffe67d8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8066edbba8,ffff8000fffe67d8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8066edbba8,ffff8000fffe67d8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000fffe67d8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000fffe67d8,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff8000fffe67d8,ffff80002a304ba0,ffff80002a304af0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a304ba0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a304ba0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f0c2483b7e0, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x680 TID PID UID PRFLAGS PFLAGS CPU COMMAND *469941 93770 0 0 0 1 syz-executor 2505 19594 0 0 0x4000000 0 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7294d90b6d30, 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd8066e763e8, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7294d90b6d30, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c44c2d0 rbx 0 rdx 0 rcx 0xffff8000fffe6a68 rax 0x2a r8 0xffff80003c44c200 r9 0x1 r10 0x6d91db2c1d6cf54d r11 0x65cdc7bfbf9d2b56 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff811d84c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c44c250 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{1}> show proc PROC (syz-executor) tid=469941 pid=93770 tcnt=1 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffe6cf8,0xffffffff83972d00 process=0xffff80003c4db8c8 user=0xffff80003c447000, vmspace=0xfffffd806be50b58 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *93770 469941 21713 0 7 0 syz-executor 39796 230029 51562 0 2 0x100000 sh 26901 422945 25549 0 2 0 syz-executor 19594 224554 91459 0 2 0 syz-executor 19594 2505 91459 0 7 0x4000000 syz-executor 51562 274538 54258 0 3 0x10008a sigsusp sh 70683 57366 38031 0 2 0 syz-executor 70683 299564 38031 0 3 0x4000080 fsleep syz-executor 70683 180693 38031 0 3 0x4000080 fsleep syz-executor 70683 99212 38031 0 3 0x4000080 kqsel syz-executor 54258 354395 59896 0 3 0x82 wait syz-executor 25549 402789 59896 0 3 0x82 nanoslp syz-executor 27269 29158 0 0 3 0x14280 nfsidl nfsio 99100 442594 0 0 3 0x14280 nfsidl nfsio 24404 220072 0 0 3 0x14280 nfsidl nfsio 55366 203571 0 0 3 0x14280 nfsidl nfsio 25165 413260 0 0 3 0x14280 nfsidl nfsio 313 150883 0 0 3 0x14280 nfsidl nfsio 35609 387287 0 0 3 0x14280 nfsidl nfsio 1333 221800 0 0 3 0x14280 nfsidl nfsio 20988 130730 0 0 3 0x14280 nfsidl nfsio 36822 110949 0 0 3 0x14280 nfsidl nfsio 80214 517474 0 0 3 0x14280 nfsidl nfsio 80612 307365 0 0 3 0x14280 nfsidl nfsio 20836 270873 0 0 3 0x14280 nfsidl nfsio 82335 87760 0 0 3 0x14280 nfsidl nfsio 44125 6784 0 0 3 0x14280 nfsidl nfsio 89433 403940 0 0 3 0x14280 nfsidl nfsio 50700 489522 0 0 3 0x14280 nfsidl nfsio 70262 81280 0 0 3 0x14280 nfsidl nfsio 37223 519892 0 0 3 0x14280 nfsidl nfsio 59225 395595 0 0 3 0x14280 nfsidl nfsio 21713 222562 59896 0 3 0x82 nanoslp syz-executor 93979 433873 59896 0 3 0x82 nanoslp syz-executor 38031 126027 59896 0 3 0x82 nanoslp syz-executor 91794 283566 1 0 3 0x100083 ttyopn getty 6353 116496 0 0 3 0x14200 bored sosplice 91459 204052 59896 0 3 0x82 nanoslp syz-executor 95270 307063 59896 0 3 0x2 biowait syz-executor 5409 226878 59896 0 3 0x2 biowait syz-executor 59896 404251 67057 0 3 0x82 kqread syz-executor 67057 28201 5273 0 3 0x10008a sigsusp ksh 5273 323349 79069 0 3 0x98 kqread sshd-session 79069 88659 81012 0 3 0x92 kqread sshd-session 81012 323745 1 0 3 0x88 kqread sshd 58166 407162 85641 74 3 0x1100092 bpf pflogd 85641 10440 1 0 3 0x80 sbwait pflogd 28786 195808 47045 73 3 0x1100090 kqread syslogd 47045 153909 1 0 3 0x100082 sbwait syslogd 7565 296756 1 0 3 0x100080 kqread resolvd 22881 82752 62228 77 3 0x100092 kqread dhcpleased 54762 296286 62228 77 3 0x100092 kqread dhcpleased 62228 53089 1 0 3 0x80 kqread dhcpleased 2990 296831 0 0 3 0x14200 bored smr 94207 497113 0 0 2 0x14200 zerothread 718 175034 0 0 3 0x14200 aiodoned aiodoned 45765 105927 0 0 3 0x14200 syncer update 84155 375026 0 0 3 0x14200 cleaner cleaner 49377 522002 0 0 3 0x14200 reaper reaper 6258 76786 0 0 3 0x14200 pgdaemon pagedaemon 30857 509649 0 0 3 0x14200 bored viomb 30024 477288 0 0 3 0x40014200 acpi0 acpi0 49951 9129 0 0 3 0x40014200 idle1 18463 74427 0 0 3 0x14200 bored softnet3 63733 313346 0 0 3 0x14200 bored softnet2 43480 189293 0 0 3 0x14200 bored softnet1 37707 300998 0 0 3 0x14200 netlock softnet0 25881 396354 0 0 2 0x40014200 systqmp 8557 507375 0 0 3 0x14200 bored systq 34160 345116 0 0 3 0x14200 tmoslp softclockmp 13508 283672 0 0 3 0x40014200 tmoslp softclock 29708 393498 0 0 3 0x40014200 idle0 1 330764 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 95270 (syz-executor) thread 0xffff80002a2922a8 (307063) Process 5409 (syz-executor) thread 0xffff80002a293208 (226878) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10226 11144K 12505K 166960K 14576 0 pcb 19 16K 18K 166960K 310 0 rtable 178 11K 13K 166960K 1269 0 pf 36 18K 22K 166960K 236 0 ifaddr 30 5K 7K 166960K 196 0 ifgroup 51 2K 3K 166960K 298 0 sysctl 4 1K 9K 166960K 12 0 counters 64 36K 38K 166960K 450 0 ioctlops 0 0K 4K 166960K 1966 0 iov 0 0K 24K 166960K 179 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1526 96K 97K 166960K 3451 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 30 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 110 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 2134 0 sigio 0 0K 0K 166960K 50 0 proc 72 91K 140K 166960K 1319 0 subproc 72 4K 4K 166960K 272 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 390 0 in_multi 52 3K 7K 166960K 401 0 ether_multi 1 0K 0K 166960K 15 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 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 818 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 227 170K 186K 166960K 19876 0 UVM aobj 65 4K 4K 166960K 68 0 pinsyscall 42 84K 102K 166960K 3821 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 77 0 NDP 13 0K 1K 166960K 142 0 temp 76 8675K 8929K 166960K 66231 0 kqueue 14 22K 32K 166960K 367 0 SYN cache 2 10K 18K 166960K 3 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 120 180 0 177 1 0 1 1 0 8 0 rtentry 176 393 0 325 5 0 5 5 0 8 0 unpcb 144 1365 0 1346 6 4 2 5 0 8 1 syncache 336 10 0 10 5 4 1 1 0 8 1 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 476 0 470 8 6 2 8 0 8 0 arp 128 75 0 60 1 0 1 1 0 8 0 inpcb 384 1855 0 1843 21 13 8 8 0 8 6 nd6 144 93 0 81 1 0 1 1 0 8 0 pkpcb 40 20 0 20 4 3 1 1 0 8 1 kcovpl 48 30 0 22 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 151 0 151 4 3 1 1 0 8 1 pppxif 1504 70 0 70 4 4 0 1 0 8 0 pfstscr 40 3 0 3 2 1 1 1 0 8 1 pffrag 232 11 0 1 1 0 1 1 0 482 0 pffrnode 88 10 0 1 1 0 1 1 0 8 0 pffrent 40 15 0 5 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 2 0 1 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 4 0 0 1 0 1 1 0 8 0 pfstitem 24 113 0 39 1 0 1 1 0 8 0 pfstkey 128 116 0 42 3 0 3 3 0 8 0 pfstate 384 116 0 42 8 0 8 8 0 8 0 pfrule 1344 34 0 25 2 1 1 2 0 8 0 art_heap8 4096 5 0 1 4 0 4 4 0 8 0 art_heap4 256 1570 0 1255 32 7 25 29 0 8 3 art_table 32 1575 0 1256 4 0 4 4 0 8 0 art_node 16 386 0 330 1 0 1 1 0 8 0 sysvmsgpl 40 49 0 9 1 0 1 1 0 8 0 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 105 0 95 1 0 1 1 0 8 0 shmpl 112 65 0 3 2 0 2 2 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 4867 0 3326 97 0 97 97 0 8 0 ffsino 288 4867 0 3326 111 0 111 111 0 8 0 nchpl 144 7444 0 6867 65 29 36 65 0 8 8 rtmask 32 9 0 9 2 2 0 1 0 8 0 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 27958 0 27957 2 1 1 1 0 8 0 percpumem 16 240 0 193 1 0 1 1 0 8 0 kstatmem 264 170 0 144 5 2 3 3 0 8 0 scsiplug 72 5 0 5 2 2 0 1 0 8 0 scxspl 216 24125 0 24123 15 13 2 8 1 8 1 plimitpl 152 313 0 296 1 0 1 1 0 8 0 sigapl 424 2427 0 2357 11 2 9 9 0 8 0 knotepl 120 753 0 0 23 0 23 23 0 8 0 kqueuepl 224 658 0 647 5 4 1 5 0 8 0 pipepl 336 354 0 327 3 0 3 3 0 8 0 fdescpl 520 2380 0 2349 3 0 3 3 0 8 0 filepl 160 14235 0 14021 27 13 14 21 0 8 2 lockfpl 104 748 0 746 3 2 1 2 0 8 0 lockfspl 48 263 0 261 1 0 1 1 0 8 0 sessionpl 144 51 0 42 1 0 1 1 0 8 0 pgrppl 48 113 0 96 1 0 1 1 0 8 0 ucredpl 104 2427 0 2414 1 0 1 1 0 8 0 zombiepl 144 2430 0 2429 1 0 1 1 0 8 0 processpl 1208 2427 0 2357 6 0 6 6 0 8 0 procpl 656 5295 0 5221 8 0 8 8 0 8 1 srpgc 96 21 0 21 4 3 1 1 0 8 1 sosppl 168 12 0 12 4 3 1 1 0 8 1 sockpl 728 3489 0 3455 23 13 10 12 0 8 6 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 27 0 0 4 0 4 4 0 8 0 mtagpl 96 90 0 0 3 0 3 3 0 8 0 mbufpl 256 291 0 0 19 0 19 19 0 8 0 bufpl 280 7017 0 875 439 0 439 439 0 8 0 anonpl 32 10996 0 0 89 0 89 89 0 246 0 amapchunkpl 152 66806 0 66314 42 17 25 33 0 158 0 amappl16 200 5046 0 4989 32 17 15 17 0 8 8 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 168 0 156 1 0 1 1 0 8 0 amappl13 176 9 0 8 1 0 1 1 0 8 0 amappl12 168 3375 0 3345 4 2 2 3 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 7 0 6 1 0 1 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 28 0 25 1 0 1 1 0 8 0 amappl7 128 170 0 158 1 0 1 1 0 8 0 amappl6 120 403 0 398 1 0 1 1 0 8 0 amappl5 112 212 0 202 1 0 1 1 0 8 0 amappl4 104 403 0 380 1 0 1 1 0 8 0 amappl3 96 13439 0 13349 5 1 4 4 0 8 0 amappl2 88 1021 0 956 2 0 2 2 0 8 0 amappl1 80 19211 0 18611 17 3 14 15 0 8 0 amappl 88 18447 0 18295 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 128 254 0 254 2 2 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 67 0 3 2 0 2 2 0 8 0 uaddrrnd 24 2380 0 2349 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2380 0 2349 1 0 1 1 0 8 0 vmmpekpl 168 19536 0 19482 3 0 3 3 0 8 0 vmmpepl 168 153337 0 151383 117 16 101 103 0 357 7 vmsppl 480 2379 0 2349 6 1 5 5 0 8 0 rwobjpl 72 44927 0 37982 132 0 132 132 0 8 2 pdppl 4096 4768 0 4698 132 56 76 88 0 8 6 pvpl 32 18811 0 0 152 0 152 152 0 265 0 pmappl 256 2379 0 2349 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 446 0 77 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838abff0) 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+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(ffffffff838f9bb0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838f9bb0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 softintr_dispatch(2) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsofttty() at Xsofttty+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(ffffffff838f9bb0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838f9bb0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff80002a393e70,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x44 sys/dev/kcov.c:159 vn_ioctl(fffffd806bee8490,80044b02,ffff80002a394090,ffff8000fffe6cf8) at vn_ioctl+0x4d sys/kern/vfs_vnops.c:514 end trace frame: 0xffff80002a394190, count: 0 ddb{0}> trace x86_ipi_db(ffffffff838abff0) 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+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(ffffffff838f9bb0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838f9bb0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 softintr_dispatch(2) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsofttty() at Xsofttty+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(ffffffff838f9bb0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838f9bb0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff80002a393e70,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x44 sys/dev/kcov.c:159 vn_ioctl(fffffd806bee8490,80044b02,ffff80002a394090,ffff8000fffe6cf8) at vn_ioctl+0x4d sys/kern/vfs_vnops.c:514 sys_ioctl(ffff8000fffe6cf8,ffff80002a394270,ffff80002a3941c0) at sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 syscall(ffff80002a394270) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a394270) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c60a810160, count: -17 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x680 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7294d90b6d30, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7294d90b6d30, count: -1