panic: kernel diagnostic assertion "rn != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pipex.c", line 459 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 84383 41189 0 0 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b1a7d) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ef671,ffffffff8340b6c3,1cb,ffffffff833a8a2f) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff8000fffe4950) at pipex_unlink_session_locked+0x429 pipex_destroy_all_sessions(ffff800001491000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff800001491000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:151 pppacclose(637e,81,2000,ffff80002a2d3cc0) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003c4088b0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807232e378,81,fffffd80097fd5b0,ffff80002a2d3cc0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ce59c98,ffff80002a2d3cc0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ce59c98,ffff80002a2d3cc0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806ce59c98,ffff80002a2d3cc0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806ce59c98,ffff80002a2d3cc0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2d3cc0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2d3cc0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2d3cc0,ffff80003c408c20,ffff80003c408b70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 end trace frame: 0xffff80003c408c10, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "rn != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pipex.c", line 459 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b1a7d) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ef671,ffffffff8340b6c3,1cb,ffffffff833a8a2f) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff8000fffe4950) at pipex_unlink_session_locked+0x429 pipex_destroy_all_sessions(ffff800001491000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff800001491000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:151 pppacclose(637e,81,2000,ffff80002a2d3cc0) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003c4088b0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807232e378,81,fffffd80097fd5b0,ffff80002a2d3cc0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ce59c98,ffff80002a2d3cc0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ce59c98,ffff80002a2d3cc0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806ce59c98,ffff80002a2d3cc0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806ce59c98,ffff80002a2d3cc0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2d3cc0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2d3cc0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2d3cc0,ffff80003c408c20,ffff80003c408b70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c408c20) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c408c20) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eb434989f10, count: -16 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c408680 rbx 0xffffffff8388de07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff80002a2d3cc0 rax 0xffffffff8388cff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa7c03168af761c1b r11 0xc3581c63dff5a395 r12 0xffffffff8388dc08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff825bde75 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c408670 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=288803 pid=63148 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a2d3cc0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a2fc030,0xffff80002a2d2048 process=0xffff80003c4b3050 user=0xffff80003c403000, vmspace=0xfffffd806c9c69a8 estcpu=36, cpticks=4, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41189 84383 65312 0 7 0 syz-executor 41189 435524 65312 0 3 0x4000080 fsleep syz-executor 31718 331846 89309 0 3 0x80 nanoslp syz-executor 31718 186825 89309 0 3 0x4000080 kqsel syz-executor 31718 103711 89309 0 3 0x4000080 fsleep syz-executor 31718 237569 89309 0 3 0x4000080 fsleep syz-executor 66999 253590 69405 0 3 0x80 nanoslp syz-executor 66999 142967 69405 0 3 0x4000080 dtread syz-executor 66999 147691 69405 0 3 0x4000080 fsleep syz-executor 13979 455788 34038 0 3 0x80 nanoslp syz-executor 13979 495002 34038 0 3 0x4000080 kqread syz-executor 13979 332328 34038 0 3 0x4000080 fsleep syz-executor 65312 240357 32016 0 3 0x82 nanoslp syz-executor 58640 495664 4974 0 3 0x80 nanoslp syz-executor 58640 94140 4974 0 3 0x4000080 fsleep syz-executor 58640 88431 4974 0 3 0x4000080 ttyopn syz-executor 58640 54828 4974 0 3 0x4000080 fsleep syz-executor 69405 463727 32016 0 3 0x82 nanoslp syz-executor 84261 230923 0 0 3 0x14200 acct acct 63316 93233 0 0 3 0x14280 nfsidl nfsio 70431 421304 0 0 3 0x14280 nfsidl nfsio 11588 305146 0 0 3 0x14280 nfsidl nfsio 72657 118054 0 0 3 0x14280 nfsidl nfsio 91784 301068 0 0 3 0x14280 nfsidl nfsio 26268 374988 0 0 3 0x14280 nfsidl nfsio 5596 467430 0 0 3 0x14280 nfsidl nfsio 69812 504602 0 0 3 0x14280 nfsidl nfsio 24986 387911 0 0 3 0x14280 nfsidl nfsio 22295 80599 0 0 3 0x14280 nfsidl nfsio 41823 438941 0 0 3 0x14280 nfsidl nfsio 8324 304010 0 0 3 0x14280 nfsidl nfsio 19898 14467 0 0 3 0x14280 nfsidl nfsio 84477 305702 0 0 3 0x14280 nfsidl nfsio 53937 204058 0 0 3 0x14280 nfsidl nfsio 81982 110053 0 0 3 0x14280 nfsidl nfsio 60900 134573 0 0 3 0x14280 nfsidl nfsio 38318 12298 0 0 3 0x14280 nfsidl nfsio 41614 94659 0 0 3 0x14280 nfsidl nfsio 78452 181856 0 0 3 0x14280 nfsidl nfsio 24507 431441 32016 0 3 0x82 nanoslp syz-executor 61514 350959 32016 0 3 0x82 nanoslp syz-executor 63339 69895 32016 0 3 0x82 wait syz-executor 39385 391692 1 0 3 0x80 nanoslp init 4974 481316 32016 0 3 0x82 nanoslp syz-executor 34038 365275 32016 0 3 0x82 nanoslp syz-executor 89309 74407 32016 0 3 0x82 nanoslp syz-executor 32016 510055 30566 0 3 0x82 kqread syz-executor 30566 36954 42789 0 3 0x10008a sigsusp ksh 42789 238180 91030 0 3 0x98 kqread sshd-session 91030 272847 75997 0 3 0x92 kqread sshd-session 75997 40911 1 0 3 0x88 kqread sshd 57633 448487 88258 74 3 0x1100092 bpf pflogd 88258 195825 1 0 3 0x80 sbwait pflogd 6263 72171 27959 73 3 0x1100090 kqread syslogd 27959 414008 1 0 3 0x100082 sbwait syslogd 38761 519387 1 0 3 0x100080 kqread resolvd 96505 6646 68213 77 3 0x100092 kqread dhcpleased 26576 48295 68213 77 3 0x100092 kqread dhcpleased 68213 245956 1 0 3 0x80 kqread dhcpleased 28882 421153 0 0 3 0x14200 bored smr 421 112030 0 0 3 0x14200 pgzero zerothread 32525 252568 0 0 3 0x14200 aiodoned aiodoned 63603 10046 0 0 3 0x14200 syncer update 48719 339718 0 0 3 0x14200 cleaner cleaner 80528 465529 0 0 3 0x14200 reaper reaper 20608 26637 0 0 3 0x14200 pgdaemon pagedaemon 6824 75669 0 0 3 0x14200 bored viomb 30148 173470 0 0 3 0x40014200 acpi0 acpi0 52249 81892 0 0 3 0x40014200 idle1 86342 445168 0 0 3 0x14200 bored softnet1 29777 177237 0 0 2 0x14200 softnet0 41883 199895 0 0 3 0x14200 bored systqmp 94633 307666 0 0 3 0x14200 bored systq 74123 281770 0 0 3 0x14200 tmoslp softclockmp 82708 358658 0 0 3 0x40014200 tmoslp softclock 1508 332871 0 0 3 0x40014200 idle0 1 159159 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex /syzkaller/managers/multicore/kernel/sys/net/pipex.c:78 r = 0 (0xffffffff838655c0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pipex_destroy_all_sessions+0x2f sys/net/pipex.c:144 #3 pppacclose+0x16f sys/net/if_pppx.c:1335 #4 spec_close+0x417 sys/kern/spec_vnops.c:-1 #5 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #6 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #6 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #7 fdrop+0x121 sys/kern/kern_descrip.c:1280 #8 closef+0x192 sys/kern/kern_descrip.c:1264 #9 fdfree+0x116 sys/kern/kern_descrip.c:1195 #10 exit1+0x576 sys/kern/kern_exit.c:215 #11 sys_exit+0x1a sys/kern/kern_exit.c:-1 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #13 Xsyscall+0x128 Process 41189 (syz-executor) thread 0xffff80002a2d2038 (84383) shared rwlock vmmaplk r = 0 (0xfffffd806c9c68c0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #7 recall_trap+0x8 Process 29777 (softnet0) thread 0xffff8000ffffe000 (177237) shared rwlock softnet0 r = 0 (0xffff80000002c078) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10261 11189K 12630K 166960K 15211 0 pcb 18 15K 23K 166960K 507 0 rtable 300 15K 15K 166960K 942 0 pf 38 18K 83K 166960K 289 0 ifaddr 48 9K 9K 166960K 197 0 ifgroup 61 2K 3K 166960K 344 0 sysctl 4 1K 9K 166960K 17 0 counters 78 37K 38K 166960K 510 0 ioctlops 0 0K 4K 166960K 2148 0 iov 0 0K 16K 166960K 77 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1528 96K 96K 166960K 3538 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 19 137K 137K 166960K 96 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 1831 0 sigio 0 0K 0K 166960K 41 0 proc 63 99K 164K 166960K 938 0 subproc 72 4K 4K 166960K 135 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 577 0 in_multi 99 7K 7K 166960K 254 0 ether_multi 2 0K 0K 166960K 13 0 mrt 3 0K 0K 166960K 19 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 945 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 257 148K 173K 166960K 17565 0 UVM aobj 21 14K 14K 166960K 23 0 pinsyscall 42 84K 100K 166960K 3122 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 216 0 NDP 17 0K 2K 166960K 152 0 temp 74 8678K 8750K 166960K 68748 0 kqueue 16 26K 34K 166960K 364 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 120 250 0 247 4 2 2 2 0 8 1 rtentry 176 282 0 162 6 0 6 6 0 8 0 unpcb 144 1568 0 1551 11 5 6 6 0 8 5 syncache 336 9 0 9 4 3 1 1 0 8 1 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 736 837 0 831 19 16 3 7 0 8 2 arp 136 46 0 16 2 0 2 2 0 8 0 inpcb 328 2258 0 2243 21 16 5 10 0 8 3 nd6 152 53 0 26 2 0 2 2 0 8 0 pkpcb 40 14 0 14 3 2 1 1 0 8 1 kcovpl 48 15 0 7 1 0 1 1 0 8 0 mppekey 1024 5 0 5 2 1 1 1 0 8 1 ppxss 1192 189 0 186 1 0 1 1 0 8 0 pppxif 1504 11 0 11 3 2 1 1 0 8 1 pffrag 232 16 0 6 1 0 1 1 0 482 0 pffrnode 88 11 0 3 1 0 1 1 0 8 0 pffrent 40 31 0 20 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 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pftag 88 1 0 1 1 1 0 1 0 8 0 pfstitem 24 141 0 33 1 0 1 1 0 8 0 pfstkey 128 141 0 33 4 0 4 4 0 8 0 pfstate 448 141 0 33 13 0 13 13 0 8 0 pfrule 1344 27 0 22 2 1 1 2 0 8 0 rttmr 136 3 0 3 3 2 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1070 0 551 38 5 33 33 0 8 0 art_table 40 1074 0 551 6 0 6 6 0 8 0 art_node 32 280 0 173 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 90 0 73 1 0 1 1 0 8 0 shmpl 112 12 0 0 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 4827 0 3299 96 0 96 96 0 8 0 ffsino 296 4827 0 3299 118 0 118 118 0 8 0 nchpl 144 7219 0 6617 64 40 24 64 0 8 0 rtmask 32 55 0 54 1 0 1 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 27495 0 27495 2 1 1 1 0 8 1 percpumem 16 270 0 216 1 0 1 1 0 8 0 vcpupl 3968 6 0 0 1 0 1 1 0 8 0 vmpool 848 8 0 2 1 0 1 1 0 8 0 kstatmem 264 238 0 206 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 6 0 6 4 3 1 1 0 8 1 scxspl 216 39927 0 39927 5 3 2 3 1 8 2 plimitpl 152 460 0 443 1 0 1 1 0 8 0 sigapl 424 2108 0 2039 9 1 8 8 0 8 0 knotepl 120 993 0 0 30 0 30 30 0 8 0 kqueuepl 224 971 0 925 12 7 5 5 0 8 2 pipepl 344 534 0 507 18 9 9 9 0 8 6 fdescpl 528 2070 0 2038 3 0 3 3 0 8 0 filepl 160 16751 0 16482 29 10 19 21 0 8 6 lockfpl 104 806 0 802 2 1 1 2 0 8 0 lockfspl 48 364 0 360 1 0 1 1 0 8 0 sessionpl 144 35 0 27 1 0 1 1 0 8 0 pgrppl 48 136 0 120 1 0 1 1 0 8 0 ucredpl 104 2560 0 2547 1 0 1 1 0 8 0 zombiepl 144 2042 0 2039 1 0 1 1 0 8 0 processpl 1232 2108 0 2039 7 1 6 6 0 8 0 procpl 664 4604 0 4524 8 0 8 8 0 8 0 sosppl 176 5 0 5 3 2 1 1 0 8 1 sockpl 752 4180 0 4145 41 28 13 18 0 8 8 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 126 0 0 16 0 16 16 0 8 0 mcl2k 2048 71 0 0 6 0 6 6 0 8 0 mtagpl 96 48 0 0 2 0 2 2 0 8 0 mbufpl 256 1169 0 0 74 0 74 74 0 8 0 bufpl 280 15049 0 8913 439 0 439 439 0 8 0 anonpl 32 12128 0 0 98 0 98 98 0 246 0 amapchunkpl 152 59298 0 58744 47 19 28 35 0 158 3 amappl16 200 5849 0 5816 51 33 18 25 0 8 8 amappl15 192 26 0 26 1 1 0 1 0 8 0 amappl14 184 4 0 4 1 1 0 1 0 8 0 amappl13 176 508 0 507 1 0 1 1 0 8 0 amappl12 168 2484 0 2443 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 1 0 1 0 8 0 amappl10 152 48 0 33 1 0 1 1 0 8 0 amappl9 144 264 0 264 1 1 0 1 0 8 0 amappl8 136 31 0 28 1 0 1 1 0 8 0 amappl7 128 106 0 105 1 0 1 1 0 8 0 amappl6 120 361 0 348 1 0 1 1 0 8 0 amappl5 112 79 0 69 1 0 1 1 0 8 0 amappl4 104 469 0 441 1 0 1 1 0 8 0 amappl3 96 12066 0 11942 6 2 4 4 0 8 0 amappl2 88 633 0 573 2 0 2 2 0 8 0 amappl1 80 17336 0 16768 14 1 13 14 0 8 0 amappl 88 16400 0 16215 5 0 5 5 0 92 0 uvmvnodes 80 164 0 0 4 0 4 4 0 8 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 2 0 2 2 1 1 1 0 8 1 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 128 254 0 254 2 2 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 22 0 2 1 0 1 1 0 8 0 uaddrrnd 24 2070 0 2038 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2070 0 2038 1 0 1 1 0 8 0 vmmpekpl 168 17971 0 17915 3 0 3 3 0 8 0 vmmpepl 168 133881 0 131923 113 10 103 104 0 357 7 vmsppl 488 2069 0 2038 5 0 5 5 0 8 0 rwobjpl 80 35747 0 34646 31 1 30 31 0 8 0 pdppl 4096 4163 0 4086 119 41 78 81 0 8 1 pvpl 32 18390 0 0 149 0 149 149 0 265 0 pmappl 256 2077 0 2040 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 409 0 72 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b1a7d) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ef671,ffffffff8340b6c3,1cb,ffffffff833a8a2f) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff8000fffe4950) at pipex_unlink_session_locked+0x429 pipex_destroy_all_sessions(ffff800001491000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff800001491000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:151 pppacclose(637e,81,2000,ffff80002a2d3cc0) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003c4088b0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807232e378,81,fffffd80097fd5b0,ffff80002a2d3cc0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ce59c98,ffff80002a2d3cc0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ce59c98,ffff80002a2d3cc0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806ce59c98,ffff80002a2d3cc0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806ce59c98,ffff80002a2d3cc0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2d3cc0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2d3cc0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2d3cc0,ffff80003c408c20,ffff80003c408b70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c408c20) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c408c20) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eb434989f10, count: -16 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp 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 __mp_lock(ffffffff839c2d80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839c2d80) at __mp_lock+0x192 sys/kern/kern_lock.c:173 uvm_fault(fffffd806c9c67c0,29157977000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650 upageflttrap(ffff800033fde270,29157977000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff800033fde270) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7e0efafd4ea0, count: 7 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 __mp_lock(ffffffff839c2d80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839c2d80) at __mp_lock+0x192 sys/kern/kern_lock.c:173 uvm_fault(fffffd806c9c67c0,29157977000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650 upageflttrap(ffff800033fde270,29157977000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff800033fde270) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7e0efafd4ea0, count: -8