panic: kernel diagnostic assertion "pg->wire_count == 1" failed : file "/syzkaller/managers/main/kernel/sys/kern/vfs_biomem.c", line 310 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *233973 7356 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830afb12) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff83067464,ffffffff83077cc6,136,ffffffff82ff26ea ) at __assert+0x29 buf_free_pages(fffffd806ce80e50) at buf_free_pages+0x23d sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd806ce80e50) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806ce80e50) at buf_put+0x1dc sys/kern/vfs_bio.c:127 brelse(fffffd806ce80e50) at brelse+0x395 sys/kern/vfs_bio.c:944 vinvalbuf(fffffd8070123970,2,ffffffffffffffff,ffff80002a456008, 0,ffffffffffffffff) at vinvalbuf+0x52c sys/kern/vfs_subr.c:2022 ffs_truncate(fffffd807d0dfb50,0,0,ffffffffffffffff) at ffs_trun cate+0xf63 ufs_inactive(ffff80003740d4a8) at ufs_inactive+0x203 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd8070123970,ffff80002a456008) at VOP_INACTIVE +0xfe vrele(fffffd8070123970) at vrele+0x120 sys/kern/vfs_subr.c:824 ktrsettrace(ffff80002a4659b8,80000310,fffffd8061471798,fffffd80 7f7d7340) at ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 ktrops(ffff80002a456008,ffff80002a4659b8,0,80000310,fffffd80614 71798,fffffd807f7d7340) at ktrops+0x271 sys/kern/kern_ktrace.c:564 end trace frame: 0xffff80003740d710, count: 0 https://www.openbsd.org/ddb.html describes the minimum info req uired in bug reports. Insufficient info makes it difficult to find and fix b ugs. ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: kernel diagnostic assertion "pg->wire_count == 1" failed: file "/syzkaller/managers/main/kernel/sys/kern/vfs_biomem.c", line 310 ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830afb12) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff83067464,ffffffff83077cc6,136,ffffffff82ff26ea) at __assert+0x29 buf_free_pages(fffffd806ce80e50) at buf_free_pages+0x23d sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd806ce80e50) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806ce80e50) at buf_put+0x1dc sys/kern/vfs_bio.c:127 brelse(fffffd806ce80e50) at brelse+0x395 sys/kern/vfs_bio.c:944 vinvalbuf(fffffd8070123970,2,ffffffffffffffff,ffff80002a456008,0,ffffffffffffffff) at vinvalbuf+0x52c sys/kern/vfs_subr.c:2022 ffs_truncate(fffffd807d0dfb50,0,0,ffffffffffffffff) at ffs_truncate+0xf63 ufs_inactive(ffff80003740d4a8) at ufs_inactive+0x203 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd8070123970,ffff80002a456008) at VOP_INACTIVE+0xfe sys/kern/vfs_vops.c:495 vrele(fffffd8070123970) at vrele+0x120 sys/kern/vfs_subr.c:824 ktrsettrace(ffff80002a4659b8,80000310,fffffd8061471798,fffffd807f7d7340) at ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 ktrops(ffff80002a456008,ffff80002a4659b8,0,80000310,fffffd8061471798,fffffd807f7d7340) at ktrops+0x271 sys/kern/kern_ktrace.c:564 doktrace(fffffd8061471798,4,310,0,ffff80002a456008) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8061471798,4,310,0,ffff80002a456008) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a456008,ffff80003740d910,ffff80003740d860) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff80003740d910) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d2a50a76d0, count: -18 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80003740cfb0 rbx 0 rdx 0xffff8000012712c0 rcx 0 rax 0xffff80002a456008 r8 0x101010101010101 r9 0x8080808080808080 r10 0xf70a2e0674b6b7c9 r11 0xdd6a12651cf9affb r12 0 r13 0xfffffd8006df1800 r14 0 r15 0x1 rip 0xffffffff81598255 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003740cfa0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=233973 pid=7356 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=84, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a49d1d0,0xffff80002a4a2048 process=0xffff8000327f4018 user=0xffff800037408000, vmspace=0xfffffd806c1a8168 estcpu=34, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 4127 126732 67934 0 3 0 kmmaplk syz-executor 4127 331489 67934 0 3 0x4000080 sbwait syz-executor 4127 424986 67934 0 3 0x4000080 sbwait syz-executor 49850 285862 40402 0 2 0 syz-executor 49850 242469 40402 0 2 0x4000000 syz-executor 49850 121731 40402 0 2 0x4000000 syz-executor 7356 392513 83880 0 2 0 syz-executor * 7356 233973 83880 0 7 0x4000000 syz-executor 62999 368465 52913 0 3 0 kmmaplk syz-executor 62999 23598 52913 0 3 0x4000080 fsleep syz-executor 42595 304191 64669 0 3 0x2 clonelk ifconfig 64669 148756 736 0 3 0x10008a sigsusp sh 736 54248 34631 0 3 0x82 wait syz-executor 93057 442814 34631 0 2 0x2 syz-executor 67934 241663 34631 0 3 0x82 nanoslp syz-executor 40402 250866 34631 0 3 0x82 nanoslp syz-executor 83880 166952 34631 0 3 0x82 nanoslp syz-executor 52913 37849 34631 0 3 0x82 nanoslp syz-executor 48695 260523 34631 0 2 0x2 syz-executor 19258 496320 0 0 3 0x14200 acct acct 53331 189491 1 0 3 0x100083 ttyin getty 47115 43715 0 0 3 0x14200 bored sosplice 34631 362087 92498 0 3 0x82 wait syz-executor 92498 322213 74376 0 3 0x10008a sigsusp ksh 74376 370512 39780 0 3 0x98 kqread sshd-session 39780 142116 39819 0 3 0x92 kqread sshd-session 39819 421274 1 0 3 0x88 kqread sshd 55493 329660 1955 73 3 0x1100010 biowait syslogd 1955 518569 1 0 3 0x100082 sbwait syslogd 32132 501461 1 0 3 0x100080 kqread resolvd 83667 488102 25510 77 3 0x100092 kqread dhcpleased 9955 129964 25510 77 3 0x100092 kqread dhcpleased 25510 165146 1 0 3 0x80 kqread dhcpleased 59530 519887 0 0 3 0x14200 bored smr 14568 19428 0 0 2 0x14200 zerothread 13051 51764 0 0 3 0x14200 aiodoned aiodoned 45713 262141 0 0 3 0x14200 syncer update 44476 321241 0 0 3 0x14200 cleaner cleaner 64596 6977 0 0 3 0x14200 reaper reaper 42435 424412 0 0 3 0x14200 pgdaemon pagedaemon 81746 326296 0 0 3 0x14200 bored viomb 33033 256467 0 0 3 0x40014200 acpi0 acpi0 75409 511051 0 0 3 0x14200 bored softnet3 54938 513112 0 0 3 0x14200 bored softnet2 68518 159818 0 0 3 0x14200 bored softnet1 72145 93893 0 0 3 0x14200 bored softnet0 91929 470850 0 0 3 0x14200 bored systqmp 62305 201983 0 0 3 0x14200 bored systq 46459 82314 0 0 3 0x40014200 tmoslp softclock 7064 117685 0 0 3 0x40014200 idle0 1 262173 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10181 11064K 11457K 166960K 14240 0 pcb 17 15K 17K 166960K 718 0 rtable 175 8K 10K 166960K 3077 0 pf 36 14K 268K 166960K 291 0 ifaddr 33 6K 8K 166960K 403 0 ifgroup 49 2K 2K 166960K 449 0 sysctl 4 1K 1K 166960K 7 0 counters 30 17K 17K 166960K 131 0 ioctlops 0 0K 4K 166960K 384 0 iov 0 0K 24K 166960K 350 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1564 98K 99K 166960K 4413 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 45 0 VM map 2 1K 1K 166960K 2 0 sem 16 1K 1K 166960K 116 0 dirhash 15 2K 3K 166960K 42 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 16 57K 97K 166960K 3539 0 sigio 0 0K 0K 166960K 83 0 proc 68 75K 124K 166960K 2971 0 subproc 98 6K 7K 166960K 1183 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 453 0 in_multi 67 5K 7K 166960K 1077 0 ether_multi 1 0K 0K 166960K 14 0 mrt 1 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 1857 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 195 71K 92K 166960K 30258 0 UVM aobj 56 5K 5K 166960K 63 0 pinsyscall 37 74K 98K 166960K 6698 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 108 0 NDP 15 0K 2K 166960K 294 0 temp 75 6816K 6896K 166960K 144631 0 kqueue 13 20K 31K 166960K 431 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 377 0 374 1 0 1 1 0 8 0 rtentry 112 1080 0 1006 5 1 4 4 0 8 0 unpcb 144 2445 0 2427 17 13 4 9 0 8 3 syncache 336 12 0 12 3 2 1 1 0 8 1 tcpqe 32 6 0 6 3 2 1 1 0 8 1 tcpcb 808 1149 0 1143 21 13 8 8 0 8 7 arp 88 196 0 182 1 0 1 1 0 8 0 ipq 40 17 0 15 1 0 1 1 0 8 0 ipqe 40 160 0 158 1 0 1 1 0 8 0 inpcb 336 3821 0 3807 25 16 9 12 0 8 7 nd6 104 286 0 271 1 0 1 1 0 8 0 pkpcb 40 17 0 17 3 2 1 1 0 8 1 kcovpl 48 91 0 84 1 0 1 1 0 8 0 ppxss 1072 8 0 8 3 2 1 1 0 8 1 pfstscr 40 8 0 7 1 0 1 1 0 8 0 pfrktable 1344 3 0 3 2 1 1 1 0 8 1 pftag 88 8 0 8 2 1 1 1 0 8 1 pfstitem 24 7 0 1 1 0 1 1 0 8 0 pfstkey 128 29 0 24 1 0 1 1 0 8 0 pfstate 344 15 0 12 1 0 1 1 0 8 0 pfrule 1344 21 0 21 3 2 1 1 0 8 1 art_heap8 4096 6 0 1 5 0 5 5 0 8 0 art_heap4 256 4304 0 3989 37 7 30 30 0 8 6 art_table 32 4310 0 3990 4 0 4 4 0 8 0 art_node 16 1072 0 1006 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 109 0 95 1 0 1 1 0 8 0 shmpl 112 60 0 7 2 0 2 2 0 8 0 dirhash 1024 37 0 18 3 0 3 3 0 8 0 dino2pl 256 5867 0 4218 104 0 104 104 0 8 0 ffsino 240 5868 0 4218 98 0 98 98 0 8 0 nchpl 144 9321 0 7535 67 0 67 67 0 8 0 uvmvnodes 80 8172 0 0 167 0 167 167 0 8 0 vnodes 216 8172 0 0 454 0 454 454 0 8 0 namei 1024 40087 0 40085 4 2 2 2 0 8 1 kstatmem 264 224 0 202 2 0 2 2 0 8 0 scsiplug 72 7 0 7 3 2 1 1 0 8 1 scxspl 216 68883 0 68882 8 7 1 8 1 8 0 plimitpl 152 839 0 822 1 0 1 1 0 8 0 sigapl 424 3707 0 3661 10 2 8 8 0 8 2 futexpl 64 34466 0 34465 1 0 1 1 0 8 0 knotepl 120 85654 0 85607 49 39 10 17 0 8 8 kqueuepl 184 1045 0 1036 10 6 4 4 0 8 3 pipepl 288 819 0 792 15 8 7 7 0 8 4 fdescpl 432 3641 0 3613 5 1 4 5 0 8 0 filepl 120 23031 0 22794 24 11 13 15 0 8 5 lockfpl 104 830 0 828 1 0 1 1 0 8 0 lockfspl 48 301 0 299 1 0 1 1 0 8 0 sessionpl 144 111 0 103 1 0 1 1 0 8 0 pgrppl 48 221 0 205 1 0 1 1 0 8 0 ucredpl 104 3041 0 3029 1 0 1 1 0 8 0 zombiepl 144 4633 0 4632 2 1 1 1 0 8 0 processpl 1096 3707 0 3661 7 1 6 6 0 8 2 procpl 648 7583 0 7531 9 1 8 8 0 8 3 sosppl 168 14 0 14 3 2 1 1 0 8 1 sockpl 504 6704 0 6669 84 72 12 30 0 8 7 mcl64k 65536 113 0 113 2 1 1 1 0 8 1 mcl16k 16384 42 0 42 3 2 1 1 0 8 1 mcl12k 12288 4 0 4 1 0 1 1 0 8 1 mcl9k 9216 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 44 0 44 3 2 1 1 0 8 1 mcl4k 4096 6256 0 6199 15 7 8 15 0 8 0 mcl2k2 2112 8 0 8 3 2 1 1 0 8 1 mcl2k 2048 4600 0 4600 8 6 2 4 0 8 2 mtagpl 96 167 0 167 3 1 2 2 0 8 2 mbufpl 256 38569 0 38453 26 9 17 26 0 8 8 bufpl 280 13060 0 5611 585 0 585 585 0 8 4 anonpl 24 479846 0 476765 138 63 75 75 0 187 42 amapchunkpl 152 99104 0 98714 71 34 37 41 0 158 20 amappl16 200 7398 0 7393 59 51 8 15 0 8 7 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 281 0 271 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 5588 0 5559 3 1 2 3 0 8 0 amappl11 160 53 0 43 1 0 1 1 0 8 0 amappl10 152 9 0 9 1 1 0 1 0 8 0 amappl9 144 147 0 147 1 1 0 1 0 8 0 amappl8 136 20 0 18 1 0 1 1 0 8 0 amappl7 128 299 0 288 1 0 1 1 0 8 0 amappl6 120 976 0 972 1 0 1 1 0 8 0 amappl5 112 459 0 448 1 0 1 1 0 8 0 amappl4 104 543 0 528 1 0 1 1 0 8 0 amappl3 96 19562 0 19473 6 2 4 4 0 8 1 amappl2 88 1860 0 1795 2 0 2 2 0 8 0 amappl1 80 23328 0 22816 13 0 13 13 0 8 0 amappl 88 29059 0 28917 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 0 1 1 0 8 1 dma32768 32768 2 0 2 2 1 1 1 0 8 1 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 254 0 254 2 1 1 1 0 8 1 dma64 64 7 0 7 2 1 1 1 0 8 1 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 62 0 7 1 0 1 1 0 8 0 uaddrrnd 24 3641 0 3613 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3641 0 3613 1 0 1 1 0 8 0 vmmpekpl 168 30070 0 30009 3 0 3 3 0 8 0 vmmpepl 168 223443 0 221868 116 27 89 93 0 357 13 vmsppl 344 3640 0 3613 4 1 3 4 0 8 0 rwobjpl 24 67260 0 58220 55 0 55 55 0 8 0 pdppl 4096 7288 0 7226 254 190 64 82 0 8 2 pvpl 32 1800416 0 1791367 434 183 251 251 0 265 161 pmappl 216 3640 0 3613 3 1 2 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 719 0 343 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830afb12) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff83067464,ffffffff83077cc6,136,ffffffff82ff26ea) at __assert+0x29 buf_free_pages(fffffd806ce80e50) at buf_free_pages+0x23d sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd806ce80e50) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806ce80e50) at buf_put+0x1dc sys/kern/vfs_bio.c:127 brelse(fffffd806ce80e50) at brelse+0x395 sys/kern/vfs_bio.c:944 vinvalbuf(fffffd8070123970,2,ffffffffffffffff,ffff80002a456008,0,ffffffffffffffff) at vinvalbuf+0x52c sys/kern/vfs_subr.c:2022 ffs_truncate(fffffd807d0dfb50,0,0,ffffffffffffffff) at ffs_truncate+0xf63 ufs_inactive(ffff80003740d4a8) at ufs_inactive+0x203 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd8070123970,ffff80002a456008) at VOP_INACTIVE+0xfe sys/kern/vfs_vops.c:495 vrele(fffffd8070123970) at vrele+0x120 sys/kern/vfs_subr.c:824 ktrsettrace(ffff80002a4659b8,80000310,fffffd8061471798,fffffd807f7d7340) at ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 ktrops(ffff80002a456008,ffff80002a4659b8,0,80000310,fffffd8061471798,fffffd807f7d7340) at ktrops+0x271 sys/kern/kern_ktrace.c:564 doktrace(fffffd8061471798,4,310,0,ffff80002a456008) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8061471798,4,310,0,ffff80002a456008) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a456008,ffff80003740d910,ffff80003740d860) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff80003740d910) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d2a50a76d0, count: -18 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830afb12) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff83067464,ffffffff83077cc6,136,ffffffff82ff26ea) at __assert+0x29 buf_free_pages(fffffd806ce80e50) at buf_free_pages+0x23d sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd806ce80e50) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806ce80e50) at buf_put+0x1dc sys/kern/vfs_bio.c:127 brelse(fffffd806ce80e50) at brelse+0x395 sys/kern/vfs_bio.c:944 vinvalbuf(fffffd8070123970,2,ffffffffffffffff,ffff80002a456008,0,ffffffffffffffff) at vinvalbuf+0x52c sys/kern/vfs_subr.c:2022 ffs_truncate(fffffd807d0dfb50,0,0,ffffffffffffffff) at ffs_truncate+0xf63 ufs_inactive(ffff80003740d4a8) at ufs_inactive+0x203 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd8070123970,ffff80002a456008) at VOP_INACTIVE+0xfe sys/kern/vfs_vops.c:495 vrele(fffffd8070123970) at vrele+0x120 sys/kern/vfs_subr.c:824 ktrsettrace(ffff80002a4659b8,80000310,fffffd8061471798,fffffd807f7d7340) at ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 ktrops(ffff80002a456008,ffff80002a4659b8,0,80000310,fffffd8061471798,fffffd807f7d7340) at ktrops+0x271 sys/kern/kern_ktrace.c:564 doktrace(fffffd8061471798,4,310,0,ffff80002a456008) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8061471798,4,310,0,ffff80002a456008) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a456008,ffff80003740d910,ffff80003740d860) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff80003740d910) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d2a50a76d0, count: -18