login: panic: kernel diagnostic assertion "rn != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/pipex.c", line 502 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833384c7) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff83378cbb,ffffffff832ce4e2,1f6,ffffffff83330789) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c9665b8) at pipex_unlink_session_locked+0x402 pipex_destroy_all_sessions(ffff8000014c1000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff8000014c1000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:154 pppacclose(637e,41,2000,ffff80003c96cfc8) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003c9ebae0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806b4a4550,41,fffffd8007bfb958,ffff80003c96cfc8) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ba7b808,ffff80003c96cfc8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ba7b808,ffff80003c96cfc8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806ba7b808,ffff80003c96cfc8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806ba7b808,ffff80003c96cfc8) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c96cfc8) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80003c96cfc8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c96cfc8,ffff80003c9ebe40,ffff80003c9ebd90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 end trace frame: 0xffff80003c9ebe30, count: 0 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: kernel diagnostic assertion "rn != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/pipex.c", line 502 ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833384c7) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff83378cbb,ffffffff832ce4e2,1f6,ffffffff83330789) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c9665b8) at pipex_unlink_session_locked+0x402 pipex_destroy_all_sessions(ffff8000014c1000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff8000014c1000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:154 pppacclose(637e,41,2000,ffff80003c96cfc8) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003c9ebae0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806b4a4550,41,fffffd8007bfb958,ffff80003c96cfc8) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ba7b808,ffff80003c96cfc8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ba7b808,ffff80003c96cfc8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806ba7b808,ffff80003c96cfc8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806ba7b808,ffff80003c96cfc8) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c96cfc8) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80003c96cfc8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c96cfc8,ffff80003c9ebe40,ffff80003c9ebd90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9ebe40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9ebe40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e3794391d30, count: -16 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80003c9eb8c0 rbx 0x1 rdx 0 rcx 0 rax 0xffff80003c96cfc8 r8 0x101010101010101 r9 0x8080808080808080 r10 0x51bf6d837b178263 r11 0x2902d1371349363d r12 0 r13 0xffff80003c965928 r14 0 r15 0x1 rip 0xffffffff8233c015 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c9eb8b0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=38543 pid=22019 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c96cfc8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c96cd30,0xffff80003c96dcd0 process=0xffff8000ffffa898 user=0xffff80003c9e6000, vmspace=0xfffffd806ba86460 estcpu=34, cpticks=3, pctcpu=0.2, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 13668 23216 2631 0 2 0 syz-executor 13668 304667 2631 0 3 0x4000080 fsleep syz-executor 99062 76750 20797 0 2 0 syz-executor 99062 226493 20797 0 3 0x4000080 fsleep syz-executor 27708 291297 72844 0 3 0x80 nanoslp syz-executor 27708 397837 72844 0 3 0x4000080 netacc syz-executor 27708 116821 72844 0 3 0x4000080 fsleep syz-executor 69157 84245 89377 0 2 0 syz-executor 69157 48271 89377 0 3 0x4000080 fsleep syz-executor 41398 509724 52260 0 2 0 syz-executor 41398 334059 52260 0 2 0x4000000 syz-executor 41081 435219 0 0 3 0x14280 nfsidl nfsio 91588 418698 0 0 3 0x14280 nfsidl nfsio 24764 321274 0 0 3 0x14280 nfsidl nfsio 57106 503343 0 0 3 0x14280 nfsidl nfsio 84527 111763 0 0 3 0x14280 nfsidl nfsio 54081 267115 0 0 3 0x14280 nfsidl nfsio 74138 148785 0 0 3 0x14280 nfsidl nfsio 9072 278728 0 0 3 0x14280 nfsidl nfsio 42402 430053 0 0 3 0x14280 nfsidl nfsio 81941 467520 0 0 3 0x14280 nfsidl nfsio 90949 185773 0 0 3 0x14280 nfsidl nfsio 41331 161312 0 0 3 0x14280 nfsidl nfsio 99729 56404 0 0 3 0x14280 nfsidl nfsio 1754 180216 0 0 3 0x14280 nfsidl nfsio 69835 392549 0 0 3 0x14280 nfsidl nfsio 86847 110180 0 0 3 0x14280 nfsidl nfsio 15179 172675 0 0 3 0x14280 nfsidl nfsio 60617 87737 0 0 3 0x14280 nfsidl nfsio 94316 297882 0 0 3 0x14280 nfsidl nfsio 96146 479225 0 0 3 0x14280 nfsidl nfsio 87239 290800 1 0 3 0x100083 ttyopn getty 28661 330554 0 0 3 0x14200 bored sosplice 25087 400865 29274 0 2 0x2 syz-executor 20797 450627 29274 0 3 0x82 nanoslp syz-executor 25766 410317 29274 0 3 0x82 nanoslp syz-executor 34735 57566 29274 0 2 0x2 syz-executor 89377 192454 29274 0 3 0x82 nanoslp syz-executor 52260 207826 29274 0 3 0x82 nanoslp syz-executor 72844 424263 29274 0 3 0x82 nanoslp syz-executor 2631 173933 29274 0 3 0x82 nanoslp syz-executor 29274 319323 4190 0 3 0x82 kqread syz-executor 4190 377253 98103 0 3 0x10008a sigsusp ksh 98103 334032 99658 0 3 0x98 kqread sshd-session 99658 475998 65020 0 3 0x92 kqread sshd-session 65020 8095 1 0 3 0x88 kqread sshd 57786 360541 16361 73 3 0x1100090 kqread syslogd 16361 42731 1 0 3 0x100082 sbwait syslogd 44087 479670 1 0 3 0x100080 kqread resolvd 36928 283526 11841 77 2 0x100012 dhcpleased 18251 136120 11841 77 3 0x100092 kqread dhcpleased 11841 199260 1 0 3 0x80 kqread dhcpleased 36479 359166 0 0 3 0x14200 bored smr 28803 248677 0 0 2 0x14200 zerothread 84908 422241 0 0 3 0x14200 aiodoned aiodoned 97506 291788 0 0 3 0x14200 syncer update 97727 46009 0 0 3 0x14200 cleaner cleaner 51223 82805 0 0 3 0x14200 reaper reaper 21523 342505 0 0 3 0x14200 pgdaemon pagedaemon 45844 426832 0 0 3 0x14200 bored viomb 99404 33989 0 0 3 0x40014200 acpi0 acpi0 69593 342023 0 0 2 0x14200 softnet0 40366 98699 0 0 3 0x14200 bored systqmp 23085 292313 0 0 3 0x14200 bored systq 1255 509107 0 0 3 0x40014200 tmoslp softclock 64438 345425 0 0 3 0x40014200 idle0 1 438614 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10187 11057K 11256K 166960K 12743 0 pcb 19 12K 12K 166960K 255 0 rtable 188 12K 12K 166960K 496 0 pf 32 13K 16K 166960K 239 0 ifaddr 34 6K 7K 166960K 170 0 ifgroup 52 2K 2K 166960K 327 0 sysctl 4 1K 9K 166960K 12 0 counters 36 18K 18K 166960K 204 0 ioctlops 0 0K 4K 166960K 233 0 iov 0 0K 36K 166960K 53 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1332 84K 84K 166960K 2275 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 3 33K 33K 166960K 5 0 dirhash 12 2K 2K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 240K 166960K 2399 0 sigio 0 0K 0K 166960K 41 0 proc 60 59K 124K 166960K 584 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 49 0 in_multi 58 4K 7K 166960K 183 0 ether_multi 1 0K 0K 166960K 17 0 mrt 0 0K 0K 166960K 21 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 440 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 214 159K 177K 166960K 21057 0 UVM aobj 18 3K 4K 166960K 20 0 pinsyscall 37 74K 96K 166960K 3434 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 53 0 NDP 12 0K 2K 166960K 114 0 temp 57 8643K 8721K 166960K 50785 0 kqueue 14 22K 30K 166960K 282 0 SYN cache 2 8K 16K 166960K 3 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 97 0 94 1 0 1 1 0 8 0 rtentry 136 158 0 97 4 0 4 4 0 8 0 unpcb 144 528 0 513 1 0 1 1 0 8 0 syncache 336 5 0 5 3 2 1 1 0 8 1 tcpqe 32 3 0 3 2 1 1 1 0 8 1 tcpcb 736 335 0 326 2 0 2 2 0 8 1 arp 96 16 0 4 1 0 1 1 0 8 0 ipq 40 8 0 6 1 0 1 1 0 8 0 ipqe 40 12 0 9 1 0 1 1 0 8 0 inpcb 328 735 0 721 4 2 2 2 0 8 0 ip6q 72 7 0 6 2 1 1 1 0 8 0 ip6af 40 12 0 11 2 1 1 1 0 8 0 nd6 104 21 0 12 1 0 1 1 0 8 0 pkpcb 40 11 0 11 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 3 0 3 2 1 1 1 0 8 1 ppxss 1072 136 0 131 2 1 1 1 0 8 0 pppxif 1384 26 0 26 2 1 1 1 0 8 1 pfrktable 1344 3 0 3 1 1 0 1 0 8 0 rttmr 136 7 0 7 2 1 1 1 0 8 1 art_heap8 4096 5 0 1 4 0 4 4 0 8 0 art_heap4 256 937 0 715 29 9 20 29 0 8 1 art_table 40 942 0 716 5 0 5 5 0 8 0 art_node 32 157 0 106 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 7 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 shmpl 112 17 0 2 1 0 1 1 0 8 0 dirhash 1024 40 0 23 3 0 3 3 0 8 0 dino2pl 256 5120 0 3625 95 0 95 95 0 8 0 ffsino 256 5120 0 3625 95 0 95 95 0 8 0 nchpl 144 7869 0 6189 63 0 63 63 0 8 0 rtmask 32 35 0 34 2 1 1 1 0 8 0 uvmvnodes 80 5549 0 0 114 0 114 114 0 8 0 vnodes 216 5549 0 0 309 0 309 309 0 8 0 namei 1024 20103 0 20102 4 3 1 2 0 8 0 kstatmem 264 196 0 172 3 0 3 3 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 4 0 4 2 1 1 1 0 8 1 scxspl 216 31211 0 31211 24 16 8 8 1 8 8 plimitpl 152 267 0 249 1 0 1 1 0 8 0 sigapl 424 2692 0 2630 9 1 8 8 0 8 0 knotepl 120 103801 0 103752 40 29 11 16 0 8 8 kqueuepl 184 420 0 409 1 0 1 1 0 8 0 pipepl 304 171 0 141 3 0 3 3 0 8 0 fdescpl 448 2653 0 2625 5 1 4 5 0 8 0 filepl 120 7576 0 7352 8 0 8 8 0 8 1 lockfpl 104 348 0 346 1 0 1 1 0 8 0 lockfspl 48 150 0 148 1 0 1 1 0 8 0 sessionpl 144 27 0 19 1 0 1 1 0 8 0 pgrppl 48 52 0 36 1 0 1 1 0 8 0 ucredpl 104 1464 0 1450 1 0 1 1 0 8 0 zombiepl 144 3123 0 3122 3 2 1 1 0 8 0 processpl 1152 2692 0 2630 5 0 5 5 0 8 0 procpl 664 5590 0 5522 8 1 7 7 0 8 0 sosppl 168 5 0 5 1 0 1 1 0 8 1 sockpl 552 1681 0 1648 4 1 3 3 0 8 0 mcl64k 65536 1097 0 1095 3 2 1 1 0 8 0 mcl16k 16384 350 0 350 3 2 1 1 0 8 1 mcl12k 12288 394 0 394 4 3 1 1 0 8 1 mcl9k 9216 172 0 171 4 3 1 1 0 8 0 mcl8k 8192 722 0 722 4 3 1 1 0 8 1 mcl4k 4096 7528 0 7477 13 6 7 12 0 8 0 mcl2k2 2112 5 0 5 3 2 1 1 0 8 1 mcl2k 2048 930 0 928 4 2 2 2 0 8 1 mtagpl 96 6 0 6 3 2 1 1 0 8 1 mbufpl 256 32544 0 32334 22 2 20 20 0 8 3 bufpl 280 12630 0 6402 446 0 446 446 0 8 0 anonpl 24 315585 0 311887 68 22 46 46 0 187 17 amapchunkpl 152 72199 0 71741 39 14 25 29 0 158 5 amappl16 200 5642 0 5600 44 31 13 16 0 8 8 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 153 0 143 1 0 1 1 0 8 0 amappl13 176 29 0 29 1 1 0 1 0 8 0 amappl12 168 3266 0 3238 2 0 2 2 0 8 0 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 6 0 5 1 0 1 1 0 8 0 amappl9 144 258 0 258 1 1 0 1 0 8 0 amappl8 136 24 0 22 1 0 1 1 0 8 0 amappl7 128 161 0 151 1 0 1 1 0 8 0 amappl6 120 172 0 169 1 0 1 1 0 8 0 amappl5 112 116 0 110 1 0 1 1 0 8 0 amappl4 104 299 0 283 1 0 1 1 0 8 0 amappl3 96 13646 0 13566 4 1 3 3 0 8 0 amappl2 88 2897 0 2829 2 0 2 2 0 8 0 amappl1 80 17528 0 16981 16 2 14 14 0 8 1 amappl 88 20218 0 20068 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 0 1 1 0 8 1 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 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 dma256 256 8 0 8 2 1 1 1 0 8 1 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 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 19 0 2 1 0 1 1 0 8 0 uaddrrnd 24 2653 0 2625 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2653 0 2625 1 0 1 1 0 8 0 vmmpekpl 168 18991 0 18945 3 0 3 3 0 8 0 vmmpepl 168 161622 0 159794 110 14 96 96 0 357 11 vmsppl 368 2652 0 2625 4 1 3 4 0 8 0 rwobjpl 40 43187 0 36775 66 1 65 65 0 8 0 pdppl 4096 5312 0 5250 112 46 66 82 0 8 4 pvpl 32 1144649 0 1135268 171 33 138 138 0 265 49 pmappl 216 2652 0 2625 3 1 2 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 414 0 84 10 0 10 10 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:438 panic(ffffffff833384c7) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff83378cbb,ffffffff832ce4e2,1f6,ffffffff83330789) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c9665b8) at pipex_unlink_session_locked+0x402 pipex_destroy_all_sessions(ffff8000014c1000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff8000014c1000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:154 pppacclose(637e,41,2000,ffff80003c96cfc8) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003c9ebae0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806b4a4550,41,fffffd8007bfb958,ffff80003c96cfc8) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ba7b808,ffff80003c96cfc8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ba7b808,ffff80003c96cfc8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806ba7b808,ffff80003c96cfc8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806ba7b808,ffff80003c96cfc8) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c96cfc8) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80003c96cfc8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c96cfc8,ffff80003c9ebe40,ffff80003c9ebd90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9ebe40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9ebe40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e3794391d30, count: -16 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833384c7) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff83378cbb,ffffffff832ce4e2,1f6,ffffffff83330789) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c9665b8) at pipex_unlink_session_locked+0x402 pipex_destroy_all_sessions(ffff8000014c1000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff8000014c1000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:154 pppacclose(637e,41,2000,ffff80003c96cfc8) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003c9ebae0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806b4a4550,41,fffffd8007bfb958,ffff80003c96cfc8) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ba7b808,ffff80003c96cfc8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ba7b808,ffff80003c96cfc8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806ba7b808,ffff80003c96cfc8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806ba7b808,ffff80003c96cfc8) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c96cfc8) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80003c96cfc8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c96cfc8,ffff80003c9ebe40,ffff80003c9ebd90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9ebe40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9ebe40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e3794391d30, count: -16