panic: kernel diagnostic assertion "rn != NULL" failed: file "/syzkaller/managers/multicore/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(ffffffff8337081b) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833b1e22,ffffffff833cc820,1f6,ffffffff8336ae9f) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003b830df8) at pipex_unlink_session_locked+0x402 pipex_destroy_all_sessions(ffff80000149b800) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff80000149b800) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:154 pppacclose(637e,41,2000,ffff80003300b248) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003a423060) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806465cb48,41,fffffd80097fb548,ffff80003300b248) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064724548,ffff80003300b248) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064724548,ffff80003300b248) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064724548,ffff80003300b248) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8064724548,ffff80003300b248) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003300b248) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003300b248,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003300b248,ffff80003a4233d0,ffff80003a423320) at sys_exit+0x1a sys/kern/kern_exit.c:-1 end trace frame: 0xffff80003a4233c0, 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 502 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8337081b) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833b1e22,ffffffff833cc820,1f6,ffffffff8336ae9f) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003b830df8) at pipex_unlink_session_locked+0x402 pipex_destroy_all_sessions(ffff80000149b800) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff80000149b800) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:154 pppacclose(637e,41,2000,ffff80003300b248) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003a423060) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806465cb48,41,fffffd80097fb548,ffff80003300b248) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064724548,ffff80003300b248) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064724548,ffff80003300b248) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064724548,ffff80003300b248) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8064724548,ffff80003300b248) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003300b248) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003300b248,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003300b248,ffff80003a4233d0,ffff80003a423320) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003a4233d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a4233d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d481442a510, count: -16 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003a422e30 rbx 0xffffffff837f1ddf cpu_info_full_primary+0x2ddf rdx 0 rcx 0xffff80003300b248 rax 0xffffffff837f0ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x328fee4122d5d74b r11 0xe5b58dac07fee33a r12 0xffffffff837f1be0 cpu_info_full_primary+0x2be0 r13 0 r14 0 r15 0x1 rip 0xffffffff82f3f5b5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003a422e20 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=322882 pid=56593 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003300b248 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4554e8,0xffffffff838ee388 process=0xffff80003a425830 user=0xffff80003a41e000, vmspace=0xfffffd800e259d78 estcpu=36, cpticks=4, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 72991 19856 72379 0 3 0x80 nanoslp syz-executor 72991 489779 72379 0 3 0x4000080 kqpoll syz-executor 72991 352287 72379 0 3 0x4000080 fsleep syz-executor 72991 295807 72379 0 3 0x4000080 fsleep syz-executor 60135 193664 62592 0 3 0x80 nanoslp syz-executor 60135 99183 62592 0 3 0x4000080 semwait syz-executor 60135 269774 62592 0 3 0x4000080 fsleep syz-executor 53368 183076 80386 0 3 0x80 nanoslp syz-executor 53368 282502 80386 0 3 0x4000080 fifor syz-executor 53368 341149 80386 0 3 0x4000080 kqsel syz-executor 53368 314746 80386 0 3 0x4000080 fifor syz-executor 53368 360816 80386 0 3 0x4000080 kqsel syz-executor 53368 96926 80386 0 3 0x4000080 fsleep syz-executor 16741 56308 81368 0 3 0x4000080 nanoslp syz-executor 16741 51148 81368 0 3 0x4000080 kqsel syz-executor 16741 468374 81368 0 3 0x4000080 fsleep syz-executor 66869 227711 0 0 3 0x14200 bored sosplice 12930 364171 0 0 3 0x14200 acct acct 35437 44723 0 0 3 0x14280 nfsidl nfsio 53511 207495 0 0 3 0x14280 nfsidl nfsio 46140 130751 0 0 3 0x14280 nfsidl nfsio 11615 348050 0 0 3 0x14280 nfsidl nfsio 1192 333252 0 0 3 0x14280 nfsidl nfsio 45380 277337 0 0 3 0x14280 nfsidl nfsio 91188 382439 0 0 3 0x14280 nfsidl nfsio 1274 496277 0 0 3 0x14280 nfsidl nfsio 87582 394902 0 0 3 0x14280 nfsidl nfsio 76305 353927 0 0 3 0x14280 nfsidl nfsio 38503 14338 0 0 3 0x14280 nfsidl nfsio 76554 309251 0 0 3 0x14280 nfsidl nfsio 31236 29879 0 0 3 0x14280 nfsidl nfsio 82037 333961 0 0 3 0x14280 nfsidl nfsio 80057 77118 0 0 3 0x14280 nfsidl nfsio 92205 80615 0 0 3 0x14280 nfsidl nfsio 15408 327074 0 0 3 0x14280 nfsidl nfsio 30070 117455 0 0 3 0x14280 nfsidl nfsio 83735 208510 0 0 3 0x14280 nfsidl nfsio 88857 286355 0 0 3 0x14280 nfsidl nfsio 84488 87590 1457 0 3 0x82 nanoslp syz-executor 62592 460446 1457 0 3 0x82 nanoslp syz-executor 92676 327354 1457 0 3 0x82 wait syz-executor 34273 312795 1457 0 3 0x82 nanoslp syz-executor 72379 85285 1457 0 3 0x82 nanoslp syz-executor 80386 203317 1457 0 3 0x82 nanoslp syz-executor 81368 382086 1457 0 3 0x82 nanoslp syz-executor 76087 185644 1457 0 2 0x10000082 syz-executor 1457 65141 24770 0 3 0x82 kqread syz-executor 24770 120940 17961 0 3 0x10008a sigsusp ksh 17961 235509 10469 0 3 0x98 kqread sshd-session 10469 380415 78635 0 3 0x92 kqread sshd-session 66256 179019 1 0 3 0x100083 ttyin getty 78635 455133 1 0 3 0x88 kqread sshd 25047 302204 96357 74 3 0x1100092 bpf pflogd 96357 351011 1 0 3 0x80 sbwait pflogd 5858 224976 83683 73 3 0x1100090 kqread syslogd 83683 371265 1 0 3 0x100082 sbwait syslogd 22283 308090 1 0 3 0x100080 kqread resolvd 73439 465071 78174 77 3 0x100092 kqread dhcpleased 81225 147932 78174 77 3 0x100092 kqread dhcpleased 78174 400578 1 0 3 0x80 kqread dhcpleased 82212 428167 0 0 3 0x14200 bored smr 67544 477898 0 0 2 0x14200 zerothread 25845 126085 0 0 3 0x14200 aiodoned aiodoned 76837 82645 0 0 3 0x14200 syncer update 35746 383531 0 0 3 0x14200 cleaner cleaner 81156 345090 0 0 3 0x14200 reaper reaper 91201 426489 0 0 3 0x14200 pgdaemon pagedaemon 98317 34117 0 0 3 0x14200 bored viomb 53447 173380 0 0 3 0x40014200 acpi0 acpi0 33738 379611 0 0 3 0x40014200 idle1 77842 314528 0 0 3 0x14200 bored softnet7 61010 109879 0 0 3 0x14200 bored softnet6 88070 115941 0 0 3 0x14200 bored softnet5 47017 46506 0 0 3 0x14200 bored softnet4 42445 163656 0 0 3 0x14200 bored softnet3 33166 18890 0 0 3 0x14200 bored softnet2 2423 258627 0 0 3 0x14200 bored softnet1 3674 58328 0 0 3 0x14200 bored softnet0 30406 245441 0 0 3 0x14200 bored systqmp 85680 147785 0 0 3 0x14200 bored systq 23482 214864 0 0 3 0x14200 tmoslp softclockmp 90423 469527 0 0 3 0x40014200 tmoslp softclock 24350 469741 0 0 3 0x40014200 idle0 1 31856 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex /syzkaller/managers/multicore/kernel/sys/net/pipex.c:78 r = 0 (0xffffffff83811150) #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_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pipex_destroy_all_sessions+0x2f sys/net/pipex.c:147 #4 pppacclose+0x16f sys/net/if_pppx.c:1335 #5 spec_close+0x417 sys/kern/spec_vnops.c:-1 #6 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #7 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #7 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #8 fdrop+0x121 sys/kern/kern_descrip.c:1280 #9 closef+0x192 sys/kern/kern_descrip.c:1264 #10 fdfree+0x116 sys/kern/kern_descrip.c:1195 #11 exit1+0x576 sys/kern/kern_exit.c:215 #12 sys_exit+0x1a sys/kern/kern_exit.c:-1 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #14 Xsyscall+0x128 CPU 1: exclusive mutex &(curpg)->mdpage.pv_mtx r = 0 (0xfffffd8008545b50) #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_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pmap_page_remove+0x51 sys/arch/amd64/amd64/pmap.c:1967 #4 uvm_anfree_list+0xd6 sys/uvm/uvm_anon.c:112 #5 amap_wipeout+0x248 sys/uvm/uvm_amap.c:-1 #6 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #7 uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525 #8 exit1+0x6fc sys/kern/kern_exit.c:260 #9 sys_exit+0x1a sys/kern/kern_exit.c:-1 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #11 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10217 11100K 11237K 166960K 11720 0 pcb 19 13K 14K 166960K 191 0 rtable 188 9K 9K 166960K 360 0 pf 37 18K 19K 166960K 117 0 ifaddr 44 8K 8K 166960K 83 0 ifgroup 59 2K 2K 166960K 121 0 sysctl 4 1K 9K 166960K 10 0 counters 72 37K 38K 166960K 136 0 ioctlops 0 0K 4K 166960K 1742 0 iov 0 0K 28K 166960K 58 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1349 85K 85K 166960K 1760 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 23 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 228K 166960K 757 0 sigio 0 0K 0K 166960K 21 0 proc 73 115K 180K 166960K 625 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 115 0 in_multi 87 6K 7K 166960K 128 0 ether_multi 1 0K 0K 166960K 8 0 mrt 3 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 432 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 244 159K 178K 166960K 8294 0 UVM aobj 18 5K 5K 166960K 19 0 pinsyscall 41 82K 107K 166960K 1827 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 41 0 NDP 13 0K 2K 166960K 54 0 temp 72 8653K 8773K 166960K 30464 0 kqueue 13 20K 32K 166960K 180 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 98 0 92 1 0 1 1 0 8 0 rtentry 176 111 0 35 5 0 5 5 0 8 0 unpcb 144 850 0 829 8 4 4 8 0 8 3 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 214 0 208 4 0 4 4 0 8 3 arp 136 13 0 4 1 0 1 1 0 8 0 inpcb 328 710 0 698 5 0 5 5 0 8 3 nd6 144 19 0 3 1 0 1 1 0 8 0 pkpcb 40 7 0 7 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 28 0 27 1 0 1 1 0 8 0 pppxif 1504 3 0 3 1 0 1 1 0 8 1 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 10 0 5 1 0 1 1 0 482 0 pffrnode 88 10 0 5 1 0 1 1 0 8 0 pffrent 40 18 0 13 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 3 0 0 1 0 1 1 0 8 0 pfstitem 24 69 0 14 1 0 1 1 0 8 0 pfstkey 128 69 0 14 2 0 2 2 0 8 0 pfstate 384 68 0 14 6 0 6 6 0 8 0 pfrule 1344 28 0 22 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 557 0 196 30 4 26 30 0 8 0 art_table 40 559 0 196 5 0 5 5 0 8 0 art_node 32 111 0 46 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 9 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 18 0 8 1 0 1 1 0 8 0 shmpl 112 16 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2764 0 1252 96 0 96 96 0 8 0 ffsino 296 2764 0 1252 118 0 118 118 0 8 1 nchpl 144 3868 0 2169 63 0 63 63 0 8 0 rtmask 32 1 0 0 1 0 1 1 0 8 0 uvmvnodes 80 3006 0 0 62 0 62 62 0 8 0 vnodes 216 3006 0 0 167 0 167 167 0 8 0 namei 1024 11589 0 11589 2 1 1 2 0 8 1 percpumem 16 83 0 32 1 0 1 1 0 8 0 kstatmem 264 80 0 50 3 0 3 3 0 8 0 scsiplug 72 4 0 4 2 1 1 1 0 8 1 scxspl 216 13920 0 13920 10 4 6 8 1 8 6 plimitpl 152 154 0 137 1 0 1 1 0 8 0 sigapl 424 1069 0 993 9 0 9 9 0 8 0 knotepl 120 574 0 0 18 0 18 18 0 8 0 kqueuepl 224 270 0 255 3 1 2 2 0 8 1 pipepl 344 145 0 118 3 0 3 3 0 8 0 fdescpl 528 1025 0 995 3 0 3 3 0 8 0 filepl 160 5552 0 5320 17 4 13 17 0 8 2 lockfpl 104 191 0 188 1 0 1 1 0 8 0 lockfspl 48 82 0 79 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 47 0 30 1 0 1 1 0 8 0 ucredpl 104 703 0 690 1 0 1 1 0 8 0 zombiepl 144 997 0 993 1 0 1 1 0 8 0 processpl 1232 1069 0 993 6 0 6 6 0 8 0 procpl 664 2130 0 2042 9 1 8 9 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 752 1695 0 1656 21 12 9 21 0 8 4 mcl64k 65536 18 0 0 3 0 3 3 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 121 0 0 16 0 16 16 0 8 0 mcl2k 2048 41 0 0 5 0 5 5 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1270 0 0 80 0 80 80 0 8 0 bufpl 280 7039 0 896 439 0 439 439 0 8 0 anonpl 32 7646 0 0 62 0 62 62 0 246 0 amapchunkpl 152 27400 0 26888 33 5 28 28 0 158 4 amappl16 200 4047 0 4012 22 9 13 15 0 8 7 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 143 0 130 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 1669 0 1639 4 2 2 3 0 8 0 amappl11 160 75 0 61 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 312 0 311 1 0 1 1 0 8 0 amappl8 136 25 0 21 1 0 1 1 0 8 0 amappl7 128 106 0 94 1 0 1 1 0 8 0 amappl6 120 176 0 173 1 0 1 1 0 8 0 amappl5 112 132 0 122 1 0 1 1 0 8 0 amappl4 104 322 0 301 1 0 1 1 0 8 0 amappl3 96 4791 0 4689 3 0 3 3 0 8 0 amappl2 88 1260 0 1181 2 0 2 2 0 8 0 amappl1 80 10797 0 10198 16 1 15 15 0 8 0 amappl 88 7504 0 7333 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 0 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 128 255 0 255 3 2 1 1 0 8 1 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 72 18 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1025 0 995 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1025 0 995 1 0 1 1 0 8 0 vmmpekpl 168 9680 0 9638 3 0 3 3 0 8 0 vmmpepl 168 70598 0 68626 100 0 100 100 0 357 8 vmsppl 488 1024 0 994 5 1 4 5 0 8 0 rwobjpl 80 23993 0 20008 83 0 83 83 0 8 0 pdppl 4096 2058 0 1988 100 28 72 86 0 8 2 pvpl 32 14586 0 0 118 0 118 118 0 265 0 pmappl 256 1024 0 994 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 351 0 37 9 0 9 9 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(ffffffff8337081b) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833b1e22,ffffffff833cc820,1f6,ffffffff8336ae9f) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003b830df8) at pipex_unlink_session_locked+0x402 pipex_destroy_all_sessions(ffff80000149b800) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff80000149b800) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:154 pppacclose(637e,41,2000,ffff80003300b248) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003a423060) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806465cb48,41,fffffd80097fb548,ffff80003300b248) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064724548,ffff80003300b248) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064724548,ffff80003300b248) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064724548,ffff80003300b248) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8064724548,ffff80003300b248) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003300b248) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003300b248,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003300b248,ffff80003a4233d0,ffff80003a423320) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003a4233d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a4233d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d481442a510, count: -16 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) 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(ffffffff8391e360) at __mp_lock+0x19e __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8391e360) at __mp_lock+0x19e sys/kern/kern_lock.c:165 exit1(ffff80003c4c2568,0,0,1) at exit1+0x701 sys/kern/kern_exit.c:260 sys_exit(ffff80003c4c2568,ffff80003c519e10,ffff80003c519d60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c519e10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c519e10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x739bbbde6770, count: 7 ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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(ffffffff8391e360) at __mp_lock+0x19e __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8391e360) at __mp_lock+0x19e sys/kern/kern_lock.c:165 exit1(ffff80003c4c2568,0,0,1) at exit1+0x701 sys/kern/kern_exit.c:260 sys_exit(ffff80003c4c2568,ffff80003c519e10,ffff80003c519d60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c519e10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c519e10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x739bbbde6770, count: -8