kernel: protection fault trap, code=0 Stopped at lf_advlock+0x2f7: incl 0x28(%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 lf_advlock(ffff8000014865a0,0,fffffd80705b10a0,2,ffff80003c4fd1c0,20) at lf_advlock+0x2f7 ls_ref sys/kern/vfs_lockf.c:138 [inline] lf_advlock(ffff8000014865a0,0,fffffd80705b10a0,2,ffff80003c4fd1c0,20) at lf_advlock+0x2f7 sys/kern/vfs_lockf.c:278 VOP_ADVLOCK(fffffd8074dee130,fffffd80705b10a0,2,ffff80003c4fd1c0,20) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:623 vn_closefile(fffffd80705b10a0,ffff80003c4654c8) at vn_closefile+0xba sys/kern/vfs_vnops.c:615 fdrop(fffffd80705b10a0,ffff80003c4654c8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd80705b10a0,ffff80003c4654c8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c4654c8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c4654c8,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80003c4654c8,ffff80003c4fd4b0,ffff80003c4fd400) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4fd4b0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4fd4b0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b0c0e0acff0, count: -10 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c4fd110 rbx 0 rdx 0 rcx 0xffff80003c4654c8 rax 0xffffffff837d7ff0 cpu_info_full_primary+0x1ff0 r8 0xa0 r9 0 r10 0x549c66135c57817c r11 0x1eb692ad24896db8 r12 0xdead4110dead4110 r13 0x2 r14 0xffff8000014865a0 r15 0xffffffffffffffff rip 0xffffffff82fde077 lf_advlock+0x2f7 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c4fd080 ss 0x10 lf_advlock+0x2f7: incl 0x28(%r12) ddb{0}> show proc PROC (syz-executor) tid=211052 pid=55234 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=85, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c4654c8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c41aa68,0xffff80003c464808 process=0xffff80003c4d04e0 user=0xffff80003c4f8000, vmspace=0xfffffd806882e3e8 estcpu=35, cpticks=3, pctcpu=0.4, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41318 350227 53743 0 2 0x1044 syz-executor 45094 94688 34288 0 2 0 syz-executor 45094 40886 34288 0 3 0x4000000 inode syz-executor 45094 166419 34288 0 3 0x4000080 fsleep syz-executor 45094 264857 34288 0 2 0x4000000 syz-executor 47917 103091 2668 0 2 0 syz-executor 47917 139825 2668 0 3 0x4000000 vmmaplk syz-executor 47917 469295 2668 0 2 0x4000000 syz-executor 47917 295041 2668 0 2 0x4000000 syz-executor 60284 117732 42040 0 3 0x80 nanoslp syz-executor 60284 514244 42040 0 2 0x4000000 syz-executor 60284 134645 42040 0 3 0x4000080 fsleep syz-executor 60284 168468 42040 0 2 0x4000000 syz-executor 78385 150859 78411 0 3 0x80 nanoslp syz-executor 78385 307086 78411 0 3 0x4000080 kqsel syz-executor 78385 101797 78411 0 3 0x4000080 fsleep syz-executor 53743 402184 16809 0 3 0x82 ppwait syz-executor 3710 150068 16809 0 3 0x82 nanoslp syz-executor 25816 260402 1 0 3 0x100083 ttyin getty 39992 216518 0 0 3 0x14200 acct acct 42040 92658 16809 0 3 0x82 nanoslp syz-executor 2668 35748 16809 0 3 0x82 nanoslp syz-executor 99160 258274 16809 0 3 0x82 nanoslp syz-executor 57960 17056 0 0 3 0x14200 bored sosplice 59665 479824 16809 0 3 0x82 nanoslp syz-executor 34288 106928 16809 0 3 0x82 nanoslp syz-executor 78411 253270 16809 0 3 0x82 nanoslp syz-executor 16809 165445 45610 0 3 0x82 kqread syz-executor 45610 148433 28069 0 3 0x10008a sigsusp ksh 28069 168864 62394 0 3 0x98 kqread sshd-session 62394 271105 69470 0 3 0x92 kqread sshd-session 69470 286882 1 0 3 0x88 kqread sshd 56102 38183 47250 74 3 0x1100092 bpf pflogd 47250 400950 1 0 3 0x80 sbwait pflogd 61703 239625 71383 73 3 0x1100090 kqread syslogd 71383 285561 1 0 3 0x100082 sbwait syslogd 48338 37505 1 0 3 0x100080 kqread resolvd 46459 445116 90667 77 3 0x100092 kqread dhcpleased 19818 307178 90667 77 3 0x100092 kqread dhcpleased 90667 1822 1 0 3 0x80 kqread dhcpleased 17496 365670 0 0 3 0x14200 bored smr 54531 351574 0 0 2 0x14200 zerothread 99591 190413 0 0 3 0x14200 aiodoned aiodoned 31156 326609 0 0 3 0x14200 syncer update 35058 379168 0 0 3 0x14200 cleaner cleaner 46734 329641 0 0 2 0x14200 reaper 83611 81990 0 0 3 0x14200 pgdaemon pagedaemon 15870 315941 0 0 3 0x14200 bored viomb 74899 365079 0 0 3 0x40014200 acpi0 acpi0 74346 244565 0 0 7 0x40014200 idle1 47146 124968 0 0 3 0x14200 bored softnet3 18798 2324 0 0 3 0x14200 bored softnet2 75078 39216 0 0 3 0x14200 bored softnet1 4092 194945 0 0 3 0x14200 bored softnet0 60768 185403 0 0 3 0x14200 bored systqmp 1542 150423 0 0 3 0x14200 bored systq 43610 263707 0 0 3 0x14200 tmoslp softclockmp 93405 130098 0 0 3 0x40014200 tmoslp softclock 47145 418749 0 0 3 0x40014200 idle0 1 226730 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 45094 (syz-executor) thread 0xffff80003c464a88 (40886) exclusive rwlock sysctllk r = 0 (0xffffffff8380fdc8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:187 #3 kern_sysctl_dirs+0x266 sys/kern/kern_sysctl.c:424 #4 kern_sysctl+0x251 sys/kern/kern_sysctl.c:522 #5 sys_sysctl+0x3f2 sys/kern/kern_sysctl.c:-1 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #7 Xsyscall+0x128 Process 45094 (syz-executor) thread 0xffff80002a2a4a58 (264857) exclusive rwlock vmmaplk r = 0 (0xfffffd8009edac40) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5227 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918 #4 uvm_fault_check+0x8a5 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x8a5 sys/uvm/uvm_fault.c:784 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 47917 (syz-executor) thread 0xffff80002a2a4ce8 (295041) exclusive rwlock vmmaplk r = 0 (0xfffffd806882e6c8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5227 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918 #4 uvm_fault_check+0x8a5 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x8a5 sys/uvm/uvm_fault.c:784 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 60284 (syz-executor) thread 0xffff8000ffffd1f8 (514244) exclusive rrwlock inode r = 0 (0xfffffd806edae678) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:606 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:693 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 vn_open+0x13f sys/kern/vfs_vnops.c:140 #12 doopenat+0x32e sys/kern/vfs_syscalls.c:1137 #13 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 Process 46734 (reaper) thread 0xffff8000ffffd488 (329641) exclusive rwlock kmmaplk r = 0 (0xffffffff83946720) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5227 #3 uvm_unmap+0x81 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:291 #6 reaper+0x1cb sys/kern/kern_exit.c:470 #7 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10249 11056K 11875K 166960K 15259 0 pcb 17 16K 17K 166960K 494 0 rtable 268 12K 13K 166960K 1202 0 pf 36 17K 19K 166960K 251 0 ifaddr 46 9K 9K 166960K 210 0 ifgroup 59 2K 3K 166960K 329 0 sysctl 4 1K 9K 166960K 20 0 counters 68 36K 37K 166960K 332 0 ioctlops 0 0K 4K 166960K 1928 0 iov 0 0K 18K 166960K 280 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1483 93K 93K 166960K 4051 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 39 0 VM map 2 1K 1K 166960K 2 0 sem 16 11K 11K 166960K 20 0 dirhash 15 2K 3K 166960K 78 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 110K 166960K 3337 0 sigio 0 0K 0K 166960K 70 0 proc 72 91K 140K 166960K 1163 0 subproc 72 4K 4K 166960K 145 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 626 0 in_multi 89 6K 7K 166960K 340 0 ether_multi 1 0K 0K 166960K 21 0 mrt 0 0K 0K 166960K 19 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 1 0K 1K 166960K 771 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 258 168K 189K 166960K 31844 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 43 86K 106K 166960K 4768 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 187 0 NDP 15 0K 2K 166960K 139 0 temp 82 8685K 8764K 166960K 148119 0 kqueue 15 24K 33K 166960K 552 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 120 300 0 297 3 2 1 2 0 8 0 rtentry 176 388 0 273 6 0 6 6 0 8 0 unpcb 144 1824 0 1805 10 9 1 6 0 8 0 syncache 336 25 0 25 9 9 0 1 0 8 0 tcpqe 32 7 0 7 2 2 0 1 0 8 0 tcpcb 808 1118 0 1112 21 20 1 8 0 8 0 arp 128 81 0 63 1 0 1 1 0 8 0 inpcb 384 3134 0 3125 35 32 3 11 0 8 1 nd6 144 88 0 53 2 0 2 2 0 8 0 pkpcb 40 91 0 91 7 7 0 1 0 8 0 kcovpl 48 16 0 8 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 101 0 101 6 6 0 1 0 8 0 pppxif 1504 17 0 17 8 8 0 1 0 8 0 pffrag 232 48 0 41 1 0 1 1 0 482 0 pffrnode 88 43 0 37 1 0 1 1 0 8 0 pffrent 40 104 0 96 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 pfstitem 24 222 0 170 1 0 1 1 0 8 0 pfstkey 128 222 0 170 3 0 3 3 0 8 0 pfstate 384 222 0 170 8 0 8 8 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 5 0 5 3 3 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1575 0 1017 51 13 38 39 0 8 0 art_table 32 1578 0 1017 6 0 6 6 0 8 0 art_node 16 357 0 265 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 16 0 2 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 63 0 44 3 0 3 3 0 8 0 dino2pl 256 7545 0 6018 96 0 96 96 0 8 0 ffsino 288 7545 0 6018 110 0 110 110 0 8 0 nchpl 144 11870 0 11320 64 39 25 64 0 8 0 rtmask 32 8 0 8 4 4 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 37924 0 37921 5 4 1 2 0 8 0 percpumem 16 181 0 132 1 0 1 1 0 8 0 kstatmem 264 218 0 186 4 1 3 3 0 8 0 scsiplug 72 19 0 19 5 5 0 1 0 8 0 scxspl 216 37150 0 37150 19 18 1 8 1 8 1 plimitpl 152 412 0 393 1 0 1 1 0 8 0 sigapl 424 3668 0 3616 10 3 7 9 0 8 0 knotepl 120 589 0 0 17 0 17 17 0 8 0 kqueuepl 224 1172 0 1160 14 13 1 5 0 8 0 pipepl 336 407 0 380 8 2 6 6 0 8 3 fdescpl 520 3624 0 3593 3 0 3 3 0 8 0 filepl 160 20224 0 19998 39 25 14 17 0 8 0 lockfpl 104 1286 0 1284 2 0 2 2 0 8 1 lockfspl 48 449 0 447 1 0 1 1 0 8 0 sessionpl 144 56 0 47 1 0 1 1 0 8 0 pgrppl 48 97 0 80 1 0 1 1 0 8 0 ucredpl 104 3446 0 3433 1 0 1 1 0 8 0 zombiepl 144 4142 0 4139 2 1 1 1 0 8 0 processpl 1208 3668 0 3616 6 0 6 6 0 8 0 procpl 656 8313 0 8250 10 3 7 8 0 8 0 srpgc 96 28 0 28 6 5 1 1 0 8 1 sosppl 168 34 0 34 8 7 1 1 0 8 1 sockpl 728 5483 0 5452 42 37 5 15 0 8 1 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 18 0 0 3 0 3 3 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 137 0 0 16 0 16 16 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 45 0 0 5 0 5 5 0 8 0 mtagpl 96 79 0 0 2 0 2 2 0 8 0 mbufpl 256 1320 0 0 78 0 78 78 0 8 0 bufpl 280 10481 0 4339 439 0 439 439 0 8 0 anonpl 32 12314 0 0 99 0 99 99 0 246 0 amapchunkpl 152 104718 0 104104 50 21 29 33 0 158 2 amappl16 200 6684 0 6613 53 46 7 21 0 8 0 amappl15 192 10 0 9 1 0 1 1 0 8 0 amappl14 184 175 0 163 1 0 1 1 0 8 0 amappl13 176 10 0 10 2 2 0 1 0 8 0 amappl12 168 4454 0 4423 4 1 3 3 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 4 0 3 1 0 1 1 0 8 0 amappl9 144 249 0 248 2 1 1 1 0 8 0 amappl8 136 28 0 24 1 0 1 1 0 8 0 amappl7 128 148 0 136 1 0 1 1 0 8 0 amappl6 120 282 0 278 1 0 1 1 0 8 0 amappl5 112 181 0 171 1 0 1 1 0 8 0 amappl4 104 442 0 421 1 0 1 1 0 8 0 amappl3 96 22294 0 22181 5 1 4 4 0 8 0 amappl2 88 925 0 863 2 0 2 2 0 8 0 amappl1 80 27180 0 26575 18 3 15 15 0 8 0 amappl 88 30389 0 30204 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 3 0 3 2 2 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 258 0 258 3 3 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 3624 0 3592 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3624 0 3592 1 0 1 1 0 8 0 vmmpekpl 168 27406 0 27341 4 0 4 4 0 8 0 vmmpepl 168 227764 0 225659 135 35 100 107 0 357 0 vmsppl 480 3623 0 3592 6 1 5 5 0 8 0 rwobjpl 72 60353 0 53432 136 8 128 132 0 8 0 pdppl 4096 7256 0 7184 156 82 74 86 0 8 2 pvpl 32 20123 0 0 163 2 161 161 0 265 0 pmappl 256 3623 0 3592 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 583 0 140 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace lf_advlock(ffff8000014865a0,0,fffffd80705b10a0,2,ffff80003c4fd1c0,20) at lf_advlock+0x2f7 ls_ref sys/kern/vfs_lockf.c:138 [inline] lf_advlock(ffff8000014865a0,0,fffffd80705b10a0,2,ffff80003c4fd1c0,20) at lf_advlock+0x2f7 sys/kern/vfs_lockf.c:278 VOP_ADVLOCK(fffffd8074dee130,fffffd80705b10a0,2,ffff80003c4fd1c0,20) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:623 vn_closefile(fffffd80705b10a0,ffff80003c4654c8) at vn_closefile+0xba sys/kern/vfs_vnops.c:615 fdrop(fffffd80705b10a0,ffff80003c4654c8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd80705b10a0,ffff80003c4654c8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c4654c8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c4654c8,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80003c4654c8,ffff80003c4fd4b0,ffff80003c4fd400) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4fd4b0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4fd4b0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b0c0e0acff0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x4f8 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5