kernel: protection fault trap, code=0 Stopped at pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace pfi_ifhead_RB_REMOVE(ffffffff828caa00,ffff800000b4c800) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b7ca00) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b7ca00) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000ae5000,ffff800000b7ca00) at if_delgroup+0x193 sys/net/if.c:2700 if_detach(ffff800000ae5000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000ae5000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000234c31b0) at if_clone_destroy+0x136 sys/net/if.c:1212 tun_dev_close(5d00,7) at tun_dev_close+0x140 sys/net/if_tun.c:479 spec_close(ffff8000234c3280) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ecbd248,7,fffffd807f7b79c0,ffff80002126c540) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806a0b14d8,ffff80002126c540) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806a0b14d8,ffff80002126c540) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806a0b14d8,ffff80002126c540) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806a0b14d8,ffff80002126c540) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002126c540) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002126c540,0,0,1) at exit1+0x335 sys/kern/kern_exit.c:200 sys_exit(ffff80002126c540,ffff8000234c3510,ffff8000234c3560) at sys_exit+0x16 sys/kern/kern_exit.c:96 syscall(ffff8000234c35e0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000234c35e0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9f80, count: -17 ddb{0}> show registers rdi 0xffffffff828caa00 pfi_ifs rsi 0xffff800000b4c800 rbp 0xffff8000234c3010 rbx 0xdeadbeefdeadbeef rdx 0 rcx 0xffff800000af6c80 rax 0xffff800000b4c810 r8 0xf8 r9 0x8080808080808080 r10 0x5b338a597fa02a73 r11 0xf6af518c360cae81 r12 0xdeadbeefdeadbeef r13 0xffff800000b47fe0 r14 0xffff800000b4c800 r15 0xffffffff828caa00 pfi_ifs rip 0xffffffff814c4d20 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000234c2fb0 ss 0x10 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{0}> show proc PROC (syz-executor.0) pid=264289 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002126d7a0,0xffffffff828cb7f8 process=0xffff800021235528 user=0xffff8000234be000, vmspace=0xfffffd8068559010 estcpu=36, cpticks=9, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 35060 49251 81990 0 3 0x82 nanoslp syz-executor.1 48164 164628 1 0 3 0x100083 ttyin getty 35661 135655 0 0 3 0x14200 bored sosplice 81990 8161 64057 0 3 0x82 thrsleep syz-fuzzer 81990 149128 64057 0 3 0x4000082 nanoslp syz-fuzzer 81990 190561 64057 0 3 0x4000082 thrsleep syz-fuzzer 81990 241382 64057 0 3 0x4000082 kqread syz-fuzzer 81990 201430 64057 0 3 0x4000082 thrsleep syz-fuzzer 81990 511585 64057 0 3 0x4000082 thrsleep syz-fuzzer 81990 31265 64057 0 3 0x4000082 thrsleep syz-fuzzer 81990 114502 64057 0 3 0x4000002 biowait syz-fuzzer 64057 82028 95525 0 3 0x10008a sigsusp ksh 95525 134316 87461 0 3 0x92 select sshd 87461 156527 1 0 3 0x80 select sshd 24352 329560 27074 74 3 0x100092 bpf pflogd 27074 304833 1 0 3 0x80 netio pflogd 18313 43384 97503 73 3 0x100010 ffs_fsync syslogd 97503 258690 1 0 3 0x100082 netio syslogd 69876 480001 1 77 7 0x100090 dhclient 82515 443654 1 0 3 0x80 poll dhclient 65843 518448 0 0 3 0x14200 bored smr 39352 247946 0 0 3 0x14200 pgzero zerothread 18703 478469 0 0 3 0x14200 aiodoned aiodoned 86062 352915 0 0 3 0x14200 syncer update 56633 52912 0 0 3 0x14200 cleaner cleaner 49247 462172 0 0 3 0x14200 reaper reaper 89566 209593 0 0 3 0x14200 pgdaemon pagedaemon 4524 320961 0 0 3 0x14200 bored crynlk 46976 451882 0 0 3 0x14200 bored crypto 8704 83424 0 0 3 0x14200 bored viomb 86215 48880 0 0 3 0x40014200 acpi0 acpi0 64190 99609 0 0 3 0x40014200 idle1 89523 503864 0 0 3 0x14200 bored softnet 30746 152558 0 0 2 0x14200 systqmp 27693 444467 0 0 3 0x14200 bored systq 10476 523736 0 0 3 0x40014200 bored softclock 14055 288735 0 0 3 0x40014200 idle0 1 411614 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 81990 (syz-fuzzer) thread 0xffff8000211c2548 (114502) exclusive rrwlock inode r = 0 (0xfffffd8072eefd58) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x443 sys/kern/kern_rwlock.c:312 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:463 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #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:1321 #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:1848 #13 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d9f5f88) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x443 sys/kern/kern_rwlock.c:312 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:463 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #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:1848 #8 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #9 Xsyscall+0x128 Process 18313 (syslogd) thread 0xffff8000ffff67f0 (43384) exclusive rrwlock inode r = 0 (0xfffffd806ec1a1a8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x443 sys/kern/kern_rwlock.c:312 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:463 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 sys_fsync+0x113 sys/kern/vfs_syscalls.c:2887 #6 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9536 6438K 7072K 78643K 14195 0 pcb 13 8K 8K 78643K 225 0 rtable 87 3K 5K 78643K 596 0 ifaddr 69 13K 15K 78643K 252 0 counters 44 34K 34K 78643K 110 0 ioctlops 0 0K 4K 78643K 1661 0 iov 0 0K 16K 78643K 89 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 2464 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 14 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 13 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 4 9K 25K 78643K 3983 0 sigio 0 0K 0K 78643K 16 0 proc 62 63K 95K 78643K 758 0 subproc 23 1K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 170 0 in_multi 22 1K 2K 78643K 202 0 ether_multi 1 0K 0K 78643K 59 0 mrt 0 0K 0K 78643K 25 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 485 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 150 90K 121K 78643K 9862 0 UVM aobj 13 7K 7K 78643K 37 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 207 0 NDP 13 0K 0K 78643K 63 0 temp 137 3985K 4062K 78643K 13092 0 kqueue 3 4K 12K 78643K 227 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 8 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 85 0 83 1 0 1 1 0 8 0 rtentry 112 88 0 55 2 0 2 2 0 8 0 unpcb 120 832 0 817 2 1 1 2 0 8 0 syncache 296 28 0 28 4 4 0 1 0 8 0 tcpqe 32 97 0 97 4 4 0 1 0 8 0 tcpcb 736 610 0 602 15 11 4 4 0 8 2 inpcb 304 1686 0 1675 8 6 2 2 0 8 0 rttmr 72 10 0 10 1 1 0 1 0 8 0 nd6 48 20 0 17 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 1 0 1 0 8 0 kcovpl 48 3 0 2 1 0 1 1 0 8 0 ppxss 1128 8 0 8 2 2 0 1 0 8 0 pfstscr 40 20 0 20 1 1 0 1 0 8 0 pffrag 232 2 0 2 2 1 1 1 0 482 1 pffrnode 88 2 0 2 2 1 1 1 0 8 1 pffrent 40 4 0 4 2 1 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 pfrktable 1344 15 0 15 1 1 0 1 0 8 0 pfstitem 24 15 0 13 1 0 1 1 0 8 0 pfstkey 112 33 0 31 1 0 1 1 0 8 0 pfstate 320 23 0 21 2 1 1 2 0 8 0 pfrule 1360 54 0 48 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 236 0 46 12 0 12 12 0 8 0 art_table 32 237 0 46 2 0 2 2 0 8 0 art_node 16 87 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 12 1 0 1 1 0 8 0 semupl 112 11 0 11 2 2 0 1 0 8 0 semapl 112 11 0 1 1 0 1 1 0 8 0 shmpl 112 34 0 24 2 1 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 6263 0 4858 90 1 89 89 0 8 0 ffsino 272 6263 0 4858 95 0 95 95 0 8 0 nchpl 144 10833 0 9242 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 26666 0 26666 1 0 1 1 0 8 1 percpumem 16 66 0 33 1 0 1 1 0 8 0 vcpupl 1984 10 0 0 2 0 2 2 0 8 0 vmpool 560 25 0 15 1 0 1 1 0 8 0 pfiaddrpl 120 5 0 5 1 1 0 1 0 8 0 scxspl 216 32366 0 32364 13 12 1 8 0 8 0 plimitpl 152 147 0 139 1 0 1 1 0 8 0 sigapl 424 4198 0 4166 4 0 4 4 0 8 0 futexpl 56 24816 0 24816 1 0 1 1 0 8 1 knotepl 112 277 0 259 1 0 1 1 0 8 0 kqueuepl 168 1836 0 1834 1 0 1 1 0 8 0 pipepl 336 183 0 173 9 8 1 3 0 8 0 fdescpl 496 4181 0 4166 3 0 3 3 0 8 0 filepl 152 13040 0 12949 7 2 5 7 0 8 0 lockfpl 104 338 0 337 1 0 1 1 0 8 0 lockfspl 48 107 0 106 1 0 1 1 0 8 0 sessionpl 144 20 0 9 1 0 1 1 0 8 0 pgrppl 48 35 0 24 1 0 1 1 0 8 0 ucredpl 96 1557 0 1548 1 0 1 1 0 8 0 zombiepl 144 4167 0 4165 1 0 1 1 0 8 0 processpl 1080 4198 0 4165 3 0 3 3 0 8 0 procpl 672 9053 0 9013 4 0 4 4 0 8 0 sosppl 168 55 0 52 6 5 1 1 0 8 0 sockpl 432 2609 0 2581 6 2 4 5 0 8 0 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 15 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 254 0 0 18 0 18 18 0 8 0 mtagpl 96 251 0 0 7 0 7 7 0 8 0 mbufpl 256 829 0 0 43 0 43 43 0 8 0 bufpl 280 8759 0 2510 447 0 447 447 0 8 0 anonpl 24 283063 0 275502 52 3 49 49 0 186 2 amapchunkpl 152 14982 0 14781 12 3 9 9 0 158 0 amappl16 200 12355 0 12072 20 3 17 17 0 8 1 amappl15 192 1959 0 1955 1 0 1 1 0 8 0 amappl14 184 1465 0 1461 1 0 1 1 0 8 0 amappl13 176 43 0 41 1 0 1 1 0 8 0 amappl12 168 3 0 3 2 2 0 1 0 8 0 amappl11 160 607 0 590 1 0 1 1 0 8 0 amappl10 152 17 0 12 1 0 1 1 0 8 0 amappl9 144 16 0 15 2 1 1 1 0 8 0 amappl8 136 224 0 154 5 2 3 3 0 8 0 amappl7 128 262 0 254 1 0 1 1 0 8 0 amappl6 120 75 0 63 1 0 1 1 0 8 0 amappl5 112 3449 0 3429 1 0 1 1 0 8 0 amappl4 104 2310 0 2280 1 0 1 1 0 8 0 amappl3 96 213 0 205 1 0 1 1 0 8 0 amappl2 88 34222 0 34150 3 1 2 3 0 8 0 amappl1 80 127385 0 126903 26 14 12 21 0 8 0 amappl 88 9352 0 9294 2 0 2 2 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 128 253 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 36 0 24 1 0 1 1 0 8 0 uaddrrnd 24 4206 0 4181 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4206 0 4181 1 0 1 1 0 8 0 vmmpekpl 168 20861 0 20828 2 0 2 2 0 8 0 vmmpepl 168 527198 0 525716 98 24 74 77 0 357 2 vmsppl 368 4205 0 4181 3 0 3 3 0 8 0 rwobjpl 56 108110 0 107078 28 12 16 19 0 8 1 pdppl 4096 8419 0 8372 66 15 51 53 0 8 4 pvpl 32 1543608 0 1532993 163 65 98 117 0 265 8 pmappl 232 4205 0 4181 2 0 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 368 0 38 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pfi_ifhead_RB_REMOVE(ffffffff828caa00,ffff800000b4c800) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b7ca00) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b7ca00) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000ae5000,ffff800000b7ca00) at if_delgroup+0x193 sys/net/if.c:2700 if_detach(ffff800000ae5000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000ae5000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000234c31b0) at if_clone_destroy+0x136 sys/net/if.c:1212 tun_dev_close(5d00,7) at tun_dev_close+0x140 sys/net/if_tun.c:479 spec_close(ffff8000234c3280) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ecbd248,7,fffffd807f7b79c0,ffff80002126c540) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806a0b14d8,ffff80002126c540) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806a0b14d8,ffff80002126c540) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806a0b14d8,ffff80002126c540) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806a0b14d8,ffff80002126c540) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002126c540) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002126c540,0,0,1) at exit1+0x335 sys/kern/kern_exit.c:200 sys_exit(ffff80002126c540,ffff8000234c3510,ffff8000234c3560) at sys_exit+0x16 sys/kern/kern_exit.c:96 syscall(ffff8000234c35e0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000234c35e0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9f80, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d68ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x37 kd_curproc sys/dev/kcov.c:570 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x37 sys/dev/kcov.c:143 __mp_lock(ffffffff828bdab8) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828bdab8) at __mp_lock+0x133 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828bdab8,2) at __mp_acquire_count+0x4c sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x390 sys/kern/sched_bsd.c:433 sleep_finish(ffff8000211fff88,1) at sleep_finish+0x111 sys/kern/kern_synch.c:427 sleep_finish_all(ffff8000211fff88,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:457 [inline] sleep_finish_all(ffff8000211fff88,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:402 tsleep(ffffffff828e8eac,118,ffffffff82421b9e,418f99) at tsleep+0x1f2 sys/kern/kern_synch.c:163 doppoll(ffff8000211c3a48,7f7ffffd5930,3,ffff800021200118,0,ffff8000212001d0) at doppoll+0x577 sys_poll(ffff8000211c3a48,ffff800021200180,ffff8000212001d0) at sys_poll+0xa7 syscall(ffff800021200250) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021200250) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd5910, count: -14