""""g CË\A<Ú¸¤:ûÃuvm_fault(0xffffffff8277aa10, 0xffffffff8267f218, 0, 2) -> e kernel: page fault trap, code=0 Stopped at m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff8277aa10, 0xffffffff8267f218, 0, 2) -> e m_copyback(ffff8000214ed280,158,0,ffff8000214ed444,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000214ed280,158,0,ffff8000214ed444,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff8000214ed500, count: 0 ddb{0}> trace m_copyback(ffff8000214ed280,158,0,ffff8000214ed444,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000214ed280,158,0,ffff8000214ed444,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a80,ffff8000214ed528,fffffd8065aff400) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff8000214ed628,0,ffff800000ba3a98,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b5d000,ffff8000214ed8f8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000214ed8f8,ffff8000214ed904,29,0,ffff800000b5d000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b5d000,fffffd8065aff400) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000214edbe8,ffff800021f09000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff8000214eda40) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806eddc348,ffff8000214edbe8,11,fffffd807f7bf900) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca7fac8,ffff8000214edbe8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000241962a0,f0,ffff8000214edbe8,0,ffff8000214edcd0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000241962a0,ffff8000214edc80,ffff8000214edcd0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000214edd50) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000214edd50) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbd6de76d000, count: -14 ddb{0}> show registers rdi 0 rsi 0x7d85f acpi_pdirpa+0x696c7 rbp 0xffff8000214ed260 rbx 0xffffffffffff9afa rdx 0x7d85e acpi_pdirpa+0x696c6 rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0xce5e35ca08cc3e85 r12 0xfffffd8065aff300 r13 0x128 r14 0x30 r15 0xffff8000214ed460 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000214ed1a0 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=102400 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff800024196518,0xffffffff82888178 process=0xffff80002417d7b0 user=0xffff8000214e8000, vmspace=0xfffffd806908f748 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 80544 140121 41903 0 7 0 syz-executor.1 *80544 102400 41903 0 7 0x4000000 syz-executor.1 41903 476106 94938 0 3 0x82 nanosleep syz-executor.1 76508 41579 94938 0 3 0x2 biowait syz-executor.0 10950 312666 0 0 3 0x14200 bored sosplice 52566 284940 0 0 3 0x14200 acct acct 59163 133587 0 0 3 0x14280 nfsidl nfsio 96019 360801 0 0 3 0x14280 nfsidl nfsio 36049 11034 0 0 3 0x14280 nfsidl nfsio 88230 59132 0 0 3 0x14280 nfsidl nfsio 53423 507061 0 0 3 0x14280 nfsidl nfsio 7861 37663 0 0 3 0x14280 nfsidl nfsio 50228 456061 0 0 3 0x14280 nfsidl nfsio 76059 241091 0 0 3 0x14280 nfsidl nfsio 30329 336216 0 0 3 0x14280 nfsidl nfsio 42711 179355 0 0 3 0x14280 nfsidl nfsio 33162 216232 0 0 3 0x14280 nfsidl nfsio 42253 303187 0 0 3 0x14280 nfsidl nfsio 70121 128828 0 0 3 0x14280 nfsidl nfsio 54716 400459 0 0 3 0x14280 nfsidl nfsio 46871 518278 0 0 3 0x14280 nfsidl nfsio 4222 117488 0 0 3 0x14280 nfsidl nfsio 4753 105324 0 0 3 0x14280 nfsidl nfsio 2955 256538 0 0 3 0x14280 nfsidl nfsio 93750 167225 0 0 3 0x14280 nfsidl nfsio 51854 178346 0 0 3 0x14280 nfsidl nfsio 94938 411530 46900 0 3 0x82 thrsleep syz-fuzzer 94938 498710 46900 0 3 0x4000082 nanosleep syz-fuzzer 94938 161566 46900 0 3 0x4000082 thrsleep syz-fuzzer 94938 132246 46900 0 3 0x4000082 thrsleep syz-fuzzer 94938 257956 46900 0 3 0x4000082 nanosleep syz-fuzzer 94938 102461 46900 0 3 0x4000082 thrsleep syz-fuzzer 94938 514380 46900 0 3 0x4000082 thrsleep syz-fuzzer 94938 466535 46900 0 3 0x4000082 kqread syz-fuzzer 46900 88255 54361 0 3 0x10008a pause ksh 54361 147363 84933 0 3 0x92 select sshd 67754 489651 1 0 3 0x100083 ttyin getty 84933 132425 1 0 3 0x80 select sshd 42553 53578 80025 74 3 0x100092 bpf pflogd 80025 113085 1 0 3 0x80 netio pflogd 98957 209465 95559 73 3 0x100090 kqread syslogd 95559 153538 1 0 3 0x100082 netio syslogd 58730 72403 1 77 3 0x100090 poll dhclient 88313 102891 1 0 3 0x80 poll dhclient 20756 319439 0 0 3 0x14200 bored smr 96878 134772 0 0 3 0x14200 pgzero zerothread 59534 35513 0 0 3 0x14200 aiodoned aiodoned 13752 288524 0 0 3 0x14200 syncer update 52227 402887 0 0 3 0x14200 cleaner cleaner 66150 237627 0 0 3 0x14200 reaper reaper 17309 491596 0 0 3 0x14200 pgdaemon pagedaemon 21841 392548 0 0 3 0x14200 bored crynlk 40742 267111 0 0 3 0x14200 bored crypto 90412 215110 0 0 3 0x40014200 acpi0 acpi0 69772 256242 0 0 3 0x40014200 idle1 79915 494861 0 0 3 0x14200 bored softnet 68570 184540 0 0 3 0x14200 bored systqmp 32584 136463 0 0 3 0x14200 bored systq 34787 144101 0 0 3 0x40014200 bored softclock 4783 435974 0 0 3 0x40014200 idle0 1 380684 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 80544 (syz-executor.1) thread 0xffff8000241962a0 (102400) exclusive rwlock netlock r = 0 (0xffffffff827435e0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 tun_dev_write+0x1f9 sys/net/if_tun.c:867 #2 spec_write+0xd4 sys/kern/spec_vnops.c:309 #3 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 #4 vn_write+0x14e sys/kern/vfs_vnops.c:414 #5 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #6 sys_write+0x83 sys/kern/sys_generic.c:285 #7 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8289f9d8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #3 sys_write+0x83 sys/kern/sys_generic.c:285 #4 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 Process 76508 (syz-executor.0) thread 0xffff8000241973e8 (41579) exclusive rrwlock inode r = 0 (0xfffffd8077c5ae68) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 rw_enter+0x446 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vget+0x1c6 sys/kern/vfs_subr.c:671 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x6b sys/ufs/ffs/ffs_vfsops.c:1329 #8 ufs_lookup+0x151d sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x708 sys/kern/vfs_lookup.c:568 #11 namei+0x5f7 sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #13 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806eddd818) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 rw_enter+0x446 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x5f7 sys/kern/vfs_lookup.c:249 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #8 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9542 6433K 6818K 78643K 12696 0 pcb 13 8K 8K 78643K 253 0 rtable 97 7K 10K 78643K 957 0 ifaddr 95 18K 19K 78643K 321 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 115 0 ioctlops 0 0K 4K 78643K 1806 0 iov 0 0K 24K 78643K 153 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1978 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 25 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 531 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 2044 0 sigio 0 0K 0K 78643K 12 0 proc 63 63K 95K 78643K 686 0 subproc 32 2K 2K 78643K 102 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 149 0 in_multi 22 1K 2K 78643K 234 0 ether_multi 1 0K 0K 78643K 38 0 mrt 0 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 2K 78643K 566 0 pfkey data 0 0K 0K 78643K 2 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 210 162K 162K 78643K 6999 0 UVM aobj 89 7K 7K 78643K 102 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 218 0 NDP 15 0K 0K 78643K 74 0 temp 170 4015K 4087K 78643K 28056 0 kqueue 4 6K 26K 78643K 74 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 16 0 9 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 155 0 153 1 0 1 1 0 8 0 rtentry 112 146 0 117 2 0 2 2 0 8 0 unpcb 120 752 0 742 1 0 1 1 0 8 0 syncache 272 11 0 11 5 5 0 1 0 8 0 tcpqe 32 115 0 115 2 2 0 1 0 8 0 tcpcb 592 604 0 600 14 12 2 3 0 8 1 inpcb 296 1664 0 1652 10 8 2 2 0 8 0 rttmr 72 2 0 2 2 2 0 1 0 8 0 nd6 48 47 0 45 1 0 1 1 0 8 0 pkpcb 40 10 0 10 4 4 0 1 0 8 0 ppxss 1136 5 0 5 3 2 1 1 0 8 1 pffrag 232 12 0 12 2 2 0 1 0 482 0 pffrnode 88 12 0 12 2 2 0 1 0 8 0 pffrent 40 113 0 113 2 2 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 86 0 77 5 4 1 2 0 8 0 pftag 88 5 0 4 2 1 1 1 0 8 0 pfstitem 24 36 0 34 1 0 1 1 0 8 0 pfstkey 112 36 0 34 1 0 1 1 0 8 0 pfstate 328 36 0 34 3 2 1 3 0 8 0 pfrule 1360 78 0 46 4 1 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 719 0 585 26 14 12 18 0 8 1 art_table 32 720 0 585 3 1 2 3 0 8 0 art_node 16 145 0 120 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 23 1 0 1 1 0 8 0 semapl 112 527 0 517 1 0 1 1 0 8 0 shmpl 112 99 0 13 3 0 3 3 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 3882 0 2485 88 0 88 88 0 8 0 ffsino 272 3882 0 2485 94 0 94 94 0 8 0 nchpl 144 7226 0 5634 60 0 60 60 0 8 0 uvmvnodes 72 4470 0 0 82 0 82 82 0 8 0 vnodes 208 4470 0 0 236 0 236 236 0 8 0 namei 1024 21100 0 21100 8 7 1 1 0 8 1 percpumem 16 68 0 36 1 0 1 1 0 8 0 vcpupl 1984 11 0 0 2 0 2 2 0 8 0 vmpool 560 20 0 9 1 0 1 1 0 8 0 pfiaddrpl 120 27 0 20 2 1 1 1 0 8 0 scxspl 200 20507 0 20506 19 18 1 7 0 8 0 plimitpl 152 118 0 110 1 0 1 1 0 8 0 sigapl 424 2269 0 2216 11 4 7 7 0 8 1 futexpl 56 23588 0 23588 8 7 1 1 0 8 1 knotepl 112 244 0 224 2 1 1 2 0 8 0 kqueuepl 152 211 0 206 1 0 1 1 0 8 0 pipepl 304 318 0 307 10 8 2 2 0 8 1 fdescpl 496 2232 0 2216 3 0 3 3 0 8 0 filepl 152 11982 0 11879 9 4 5 6 0 8 1 lockfpl 104 396 0 395 1 0 1 1 0 8 0 lockfspl 48 130 0 129 1 0 1 1 0 8 0 sessionpl 120 22 0 11 1 0 1 1 0 8 0 pgrppl 48 26 0 15 1 0 1 1 0 8 0 ucredpl 96 2345 0 2336 1 0 1 1 0 8 0 zombiepl 144 2216 0 2216 2 1 1 1 0 8 1 processpl 1008 2269 0 2216 9 2 7 7 0 8 0 procpl 632 6208 0 6147 6 0 6 6 0 8 0 srpgc 72 2 0 2 1 1 0 1 0 8 0 sosppl 144 8 0 8 4 3 1 1 0 8 1 sockpl 400 2593 0 2573 19 15 4 4 0 8 2 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 26 0 0 2 0 2 2 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 11 0 0 2 0 2 2 0 8 0 mcl4k 4096 23 0 0 3 1 2 3 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 219 0 0 26 1 25 26 0 8 1 mtagpl 96 59 0 0 2 0 2 2 0 8 0 mbufpl 256 440 0 0 23 0 23 23 0 8 0 bufpl 280 7218 0 960 448 0 448 448 0 8 0 anonpl 16 252091 0 233780 163 74 89 91 0 124 8 amapchunkpl 152 14146 0 13802 60 45 15 28 0 158 0 amappl16 192 9606 0 8792 125 76 49 53 0 8 8 amappl15 184 9 0 9 2 2 0 1 0 8 0 amappl14 176 27 0 21 1 0 1 1 0 8 0 amappl13 168 202 0 201 1 0 1 1 0 8 0 amappl12 160 132 0 124 1 0 1 1 0 8 0 amappl11 152 318 0 301 1 0 1 1 0 8 0 amappl10 144 409 0 403 1 0 1 1 0 8 0 amappl9 136 956 0 956 2 2 0 1 0 8 0 amappl8 128 856 0 779 3 0 3 3 0 8 0 amappl7 120 640 0 632 1 0 1 1 0 8 0 amappl6 112 400 0 380 1 0 1 1 0 8 0 amappl5 104 2187 0 2175 1 0 1 1 0 8 0 amappl4 96 735 0 704 1 0 1 1 0 8 0 amappl3 88 142 0 133 1 0 1 1 0 8 0 amappl2 80 14055 0 13982 3 1 2 3 0 8 0 amappl1 72 77632 0 77168 23 12 11 19 0 8 0 amappl 80 6583 0 6485 3 0 3 3 0 84 0 dma4096 4096 1 0 1 1 1 0 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 64 101 0 13 2 0 2 2 0 8 0 uaddrrnd 24 2252 0 2225 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2252 0 2225 1 0 1 1 0 8 0 vmmpekpl 168 17572 0 17517 3 0 3 3 0 8 0 vmmpepl 168 290021 0 287910 243 134 109 125 0 357 11 vmsppl 368 2251 0 2225 4 1 3 3 0 8 0 pdppl 4096 4511 0 4461 8 1 7 7 0 8 0 pvpl 32 693408 0 671769 374 163 211 215 0 265 29 pmappl 232 2251 0 2225 4 2 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 318 0 49 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff8000214ed280,158,0,ffff8000214ed444,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000214ed280,158,0,ffff8000214ed444,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a80,ffff8000214ed528,fffffd8065aff400) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff8000214ed628,0,ffff800000ba3a98,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b5d000,ffff8000214ed8f8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000214ed8f8,ffff8000214ed904,29,0,ffff800000b5d000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b5d000,fffffd8065aff400) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000214edbe8,ffff800021f09000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff8000214eda40) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806eddc348,ffff8000214edbe8,11,fffffd807f7bf900) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca7fac8,ffff8000214edbe8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000241962a0,f0,ffff8000214edbe8,0,ffff8000214edcd0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000241962a0,ffff8000214edc80,ffff8000214edcd0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000214edd50) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000214edd50) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbd6de76d000, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d80ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0x7f7fffffae10, count: -3