panic: kernel diagnostic assertion "refs != ~0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_synch.c", line 959 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 402884 26039 0 0 0 0 syz-executor * 35307 26039 0 0 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834c3f21) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83503773,ffffffff835112ed,3bf,ffffffff8353a1c8) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff800039baf770,ffffffff834bdf97) at refcnt_finalize+0x1e7 sys/kern/kern_synch.c:960 pppx_if_destroy(ffff80002ab83000,ffff800039baf768) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(285b9c,1,2000,ffff800045fe8fb0) at pppxclose+0xa0 sys/net/if_pppx.c:541 spec_close(ffff80002a278270) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffff700705bbe60,1,fffff700097fd340,ffff800045fe8fb0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffff7006f1620b0,ffff800045fe8fb0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffff7006f1620b0,ffff800045fe8fb0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621 fdrop(fffff7006f1620b0,ffff800045fe8fb0) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffff7006f1620b0,ffff800045fe8fb0) at closef+0x192 sys/kern/kern_descrip.c:1265 sys_closefrom(ffff800045fe8fb0,ffff80002a278540,ffff80002a278490) at sys_closefrom+0x13c sys/kern/kern_descrip.c:1471 syscall(ffff80002a278540) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a278540) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa3f00ad56a0, count: 1 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: kernel diagnostic assertion "refs != ~0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_synch.c", line 959 ddb{1}> show kasan No such command ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834c3f21) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83503773,ffffffff835112ed,3bf,ffffffff8353a1c8) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff800039baf770,ffffffff834bdf97) at refcnt_finalize+0x1e7 sys/kern/kern_synch.c:960 pppx_if_destroy(ffff80002ab83000,ffff800039baf768) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(285b9c,1,2000,ffff800045fe8fb0) at pppxclose+0xa0 sys/net/if_pppx.c:541 spec_close(ffff80002a278270) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffff700705bbe60,1,fffff700097fd340,ffff800045fe8fb0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffff7006f1620b0,ffff800045fe8fb0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffff7006f1620b0,ffff800045fe8fb0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621 fdrop(fffff7006f1620b0,ffff800045fe8fb0) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffff7006f1620b0,ffff800045fe8fb0) at closef+0x192 sys/kern/kern_descrip.c:1265 sys_closefrom(ffff800045fe8fb0,ffff80002a278540,ffff80002a278490) at sys_closefrom+0x13c sys/kern/kern_descrip.c:1471 syscall(ffff80002a278540) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a278540) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa3f00ad56a0, count: -14 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a278030 rbx 0xffff80002999ee0f rdx 0xffff8000015d3f00 rcx 0xffff800045fe8fb0 rax 0xffff80002999dff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xfc79e0f6c15ce091 r11 0xc7fea0c46a1c9668 r12 0xffff80002999ec10 r13 0 r14 0 r15 0x1 rip 0xffffffff82f11595 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a278020 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=35307 pid=26039 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=75, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045fe9778,0xffff800045fe82c8 process=0xffff800045ff0010 user=0xffff80002a273000, vmspace=0xfffff7000b1f7000 estcpu=25, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 90334 305208 25260 0 2 0x100000 0 sh 48343 88779 90234 0 2 0 0 syz-executor 19337 283535 54976 0 2 0 0 syz-executor 19337 406439 54976 0 2 0 0x4000000 syz-executor 25260 144477 10577 0 3 0x100002 0x88 sigsusp sh 34368 230695 58273 0 2 0x100002 0 arp 58273 59849 61811 0 3 0x100002 0x88 sigsusp sh 26039 402884 25622 0 7 0 0 syz-executor 26039 395503 25622 0 3 0 0x4000000 smrbar syz-executor *26039 35307 25622 0 7 0 0x4000000 syz-executor 27379 205971 1 0 3 0x2 0x80 nanoslp getty 10577 350829 63781 0 3 0x2 0x80 wait syz-executor 80866 117928 63781 0 2 0x2 0 syz-executor 61811 184247 63781 0 3 0x2 0x80 wait syz-executor 67867 1278 63781 0 3 0x2 0 biowait syz-executor 54976 210674 63781 0 3 0x2 0x80 nanoslp syz-executor 13037 152752 63781 0 3 0x2 0 biowait syz-executor 90234 218605 63781 0 3 0x2 0x80 nanoslp syz-executor 25622 54627 63781 0 3 0x2 0x80 nanoslp syz-executor 63781 322379 1 0 3 0x2 0x80 kqread syz-executor 70891 101960 0 0 3 0x14000 0x200 bored smr 34244 342764 0 0 2 0x14000 0x200 zerothread 71856 432533 0 0 3 0x14000 0x200 aiodoned aiodoned 902 101916 0 0 3 0x14000 0x200 syncer update 2081 211217 0 0 3 0x14000 0x200 cleaner cleaner 89387 488597 0 0 3 0x14000 0x200 reaper reaper 36792 115593 0 0 3 0x14000 0x200 pgdaemon pagedaemon 43727 3143 0 0 3 0x14000 0x200 bored viomb 20736 418377 0 0 3 0x14000 0x40000200 acpi0 acpi0 18506 149163 0 0 3 0x14000 0x40000200 idle1 57578 197798 0 0 3 0x14000 0x200 bored softnet1 48131 519230 0 0 2 0x14000 0x200 softnet0 28174 223395 0 0 3 0x14000 0x200 smrbar systqmp 39875 23594 0 0 3 0x14000 0x200 bored systq 94938 452294 0 0 3 0x14000 0x200 tmoslp softclockmp 39241 184879 0 0 3 0x14000 0x40000200 tmoslp softclock 33445 124213 0 0 3 0x14000 0x40000200 idle0 1 511210 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks Process 26039 (syz-executor) thread 0xffff800045fe8fb0 (35307) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a50640) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 vn_closefile+0x41 sys/kern/vfs_vnops.c:614 #2 fdrop+0x121 sys/kern/kern_descrip.c:1281 #3 closef+0x192 sys/kern/kern_descrip.c:1265 #4 sys_closefrom+0x13c sys/kern/kern_descrip.c:1471 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791 #6 Xsyscall+0x128 Process 67867 (syz-executor) thread 0xffff800045fe8a80 (1278) exclusive rrwlock inode r = 0 (0xfffff7007246ab38) #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_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffff7007bc9a568) #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_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c1 sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 #9 Xsyscall+0x128 Process 13037 (syz-executor) thread 0xffff80002a22b770 (152752) exclusive rrwlock inode r = 0 (0xfffff7007246a0d0) #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_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:692 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x9e3 sys/kern/vfs_lookup.c:585 #11 namei+0x7c1 sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffff7007246a7c0) #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_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:692 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x9e3 sys/kern/vfs_lookup.c:585 #10 namei+0x7c1 sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 #13 Xsyscall+0x128 Process 28174 (systqmp) thread 0xffff800045ffe530 (223395) shared rwlock systqmp r = 0 (0xffffffff83955c28) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11047 12016K 12105K 166960K 12198 0 pcb 17 16K 21K 166960K 213 0 rtable 231 9K 9K 166960K 600 0 pf 38 18K 21K 166960K 73 0 ifaddr 43 7K 7K 166960K 80 0 ifgroup 60 2K 2K 166960K 92 0 sysctl 1 1K 9K 166960K 5 0 counters 74 37K 37K 166960K 90 0 ioctlops 0 0K 4K 166960K 1507 0 iov 0 0K 32K 166960K 9 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1289 81K 81K 166960K 1485 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 61K 93K 166960K 329 0 proc 20 33K 164K 166960K 786 0 subproc 72 4K 4K 166960K 145 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 13 0 in_multi 90 6K 6K 166960K 186 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 43 201K 201K 166960K 43 0 exec 0 0K 1K 166960K 498 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 106 84K 175K 166960K 4498 0 UVM aobj 8 2K 2K 166960K 8 0 pinsyscall 20 40K 106K 166960K 1715 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 3 0 NDP 19 0K 2K 166960K 51 0 temp 36 9114K 9150K 166960K 9466 0 kqueue 2 4K 27K 166960K 41 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 55 0 54 1 0 1 1 0 8 0 rtentry 176 195 0 92 6 0 6 6 0 8 0 unpcb 144 72 0 71 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 56 0 55 4 0 4 4 0 8 3 arp 136 35 0 17 1 0 1 1 0 8 0 inpcb 328 348 0 345 12 3 9 12 0 8 8 nd6 152 44 0 24 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 16 0 8 1 0 1 1 0 8 0 ppxss 1192 1 0 0 1 0 1 1 0 8 0 pppxif 1576 1 0 0 1 0 1 1 0 8 0 pfstscr 40 4 0 4 1 0 1 1 0 8 1 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 3 0 1 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 pfstitem 24 31 0 0 1 0 1 1 0 8 0 pfstkey 128 33 0 2 1 0 1 1 0 8 0 pfstate 448 33 0 2 4 0 4 4 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 779 0 358 32 0 32 32 0 8 5 art_table 40 780 0 358 6 0 6 6 0 8 0 art_node 32 195 0 98 1 0 1 1 0 8 0 semapl 72 5 0 0 1 0 1 1 0 8 0 shmpl 120 5 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1729 0 242 93 0 93 93 0 8 0 ffsino 296 1729 0 242 115 0 115 115 0 8 0 nchpl 144 2020 0 294 65 0 65 65 0 8 0 vnodes 216 1914 0 0 107 0 107 107 0 8 0 namei 1024 7977 0 7976 4 1 3 3 0 8 2 percpumem 16 61 0 8 1 0 1 1 0 8 0 kstatmem 264 45 0 16 2 0 2 2 0 8 0 scxspl 216 8393 0 8391 5 3 2 3 1 8 1 plimitpl 152 40 0 30 1 0 1 1 0 8 0 sigapl 424 640 0 605 7 0 7 7 0 8 1 knotepl 120 310 0 0 10 0 10 10 0 8 0 kqueuepl 224 45 0 43 1 0 1 1 0 8 0 pipepl 344 222 0 195 9 0 9 9 0 8 6 fdescpl 528 624 0 605 3 0 3 3 0 8 0 filepl 160 2554 0 2397 20 2 18 20 0 8 8 lockfpl 104 38 0 38 1 0 1 1 0 8 1 lockfspl 48 18 0 18 1 0 1 1 0 8 1 sessionpl 144 36 0 34 1 0 1 1 0 8 0 pgrppl 48 52 0 42 1 0 1 1 0 8 0 ucredpl 104 149 0 146 1 0 1 1 0 8 0 zombiepl 144 605 0 605 1 0 1 1 0 8 1 processpl 1240 640 0 605 5 0 5 5 0 8 1 procpl 664 780 0 742 6 0 6 6 0 8 1 sockpl 752 477 0 472 17 7 10 17 0 8 9 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 124 0 0 16 0 16 16 0 8 0 mcl2k 2048 27 0 0 4 0 4 4 0 8 0 mextrefs 64 29 0 0 1 0 1 1 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 243 0 0 16 0 16 16 0 8 0 bufpl 272 4039 0 105 263 0 263 263 0 8 0 anonpl 32 5606 0 0 46 0 46 46 0 247 0 amapchunkpl 152 12639 0 12388 32 0 32 32 0 158 17 amappl16 200 1234 0 1225 4 2 2 4 0 8 0 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 531 0 529 1 0 1 1 0 8 0 amappl13 176 142 0 140 1 0 1 1 0 8 0 amappl12 168 906 0 890 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 174 0 174 1 0 1 1 0 8 1 amappl9 144 274 0 274 1 0 1 1 0 8 1 amappl8 136 137 0 136 1 0 1 1 0 8 0 amappl7 128 165 0 162 1 0 1 1 0 8 0 amappl6 120 322 0 320 1 0 1 1 0 8 0 amappl5 112 98 0 98 1 0 1 1 0 8 1 amappl4 104 351 0 346 1 0 1 1 0 8 0 amappl3 96 2192 0 2148 3 0 3 3 0 8 0 amappl2 88 721 0 697 2 0 2 2 0 8 0 amappl1 80 11927 0 11791 15 1 14 15 0 8 8 amappl 88 3558 0 3472 4 0 4 4 0 92 0 uvmvnodes 80 98 0 0 2 0 2 2 0 8 0 dma4096 4096 2 0 2 2 1 1 1 0 8 1 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 72 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 624 0 605 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 624 0 605 1 0 1 1 0 8 0 vmmpekpl 168 7311 0 7265 3 0 3 3 0 8 0 vmmpepl 168 49045 0 48309 90 0 90 90 0 357 43 vmsppl 488 623 0 605 5 0 5 5 0 8 1 rwobjpl 80 16615 0 16194 24 0 24 24 0 8 0 pdppl 4096 1255 0 1210 103 34 69 85 0 8 24 pvpl 32 12146 0 0 98 0 98 98 0 265 0 pmappl 256 623 0 605 3 0 3 3 0 8 1 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 555 0 38 15 0 15 15 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8391eff0) 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(ffffffff83a4fe40) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a4fe40) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a25b750,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x72eee163e9c0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff8391eff0) 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(ffffffff83a4fe40) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a4fe40) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a25b750,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x72eee163e9c0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834c3f21) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83503773,ffffffff835112ed,3bf,ffffffff8353a1c8) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff800039baf770,ffffffff834bdf97) at refcnt_finalize+0x1e7 sys/kern/kern_synch.c:960 pppx_if_destroy(ffff80002ab83000,ffff800039baf768) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(285b9c,1,2000,ffff800045fe8fb0) at pppxclose+0xa0 sys/net/if_pppx.c:541 spec_close(ffff80002a278270) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffff700705bbe60,1,fffff700097fd340,ffff800045fe8fb0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffff7006f1620b0,ffff800045fe8fb0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffff7006f1620b0,ffff800045fe8fb0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621 fdrop(fffff7006f1620b0,ffff800045fe8fb0) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffff7006f1620b0,ffff800045fe8fb0) at closef+0x192 sys/kern/kern_descrip.c:1265 sys_closefrom(ffff800045fe8fb0,ffff80002a278540,ffff80002a278490) at sys_closefrom+0x13c sys/kern/kern_descrip.c:1471 syscall(ffff80002a278540) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a278540) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa3f00ad56a0, count: 1 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834c3f21) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83503773,ffffffff835112ed,3bf,ffffffff8353a1c8) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff800039baf770,ffffffff834bdf97) at refcnt_finalize+0x1e7 sys/kern/kern_synch.c:960 pppx_if_destroy(ffff80002ab83000,ffff800039baf768) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(285b9c,1,2000,ffff800045fe8fb0) at pppxclose+0xa0 sys/net/if_pppx.c:541 spec_close(ffff80002a278270) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffff700705bbe60,1,fffff700097fd340,ffff800045fe8fb0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffff7006f1620b0,ffff800045fe8fb0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffff7006f1620b0,ffff800045fe8fb0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621 fdrop(fffff7006f1620b0,ffff800045fe8fb0) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffff7006f1620b0,ffff800045fe8fb0) at closef+0x192 sys/kern/kern_descrip.c:1265 sys_closefrom(ffff800045fe8fb0,ffff80002a278540,ffff80002a278490) at sys_closefrom+0x13c sys/kern/kern_descrip.c:1471 syscall(ffff80002a278540) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a278540) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa3f00ad56a0, count: -14 ddb{1}>