Warning: Permanently added '10.128.1.190' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program panic: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/intr.c", line 699 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 518339 29373 0 0 0 0 syz-executor1939936622 db_enter() at db_enter+0x1c panic(ffffffff827a15bc) at panic+0x17b __assert(ffffffff8281ff28,ffffffff827abaa9,2bb,ffffffff827a3b15) at __assert+0x29 splraise(bced0db3) at splraise+0xb4 mtx_enter_try(fffffd806ef64438) at mtx_enter_try+0x73 mtx_enter(fffffd806ef64438) at mtx_enter+0x4f knote_remove(ffff80002127f540,fffffd806ef64438,fffffd806ef644c0,3,0) at knote_remove+0x20d knote_fdclose(ffff80002127f540,3) at knote_fdclose+0xae fdfree(ffff80002127f540) at fdfree+0xdf exit1(ffff80002127f540,0,0,1) at exit1+0x3ff sys_exit(ffff80002127f540,ffff800021295700,ffff800021295750) at sys_exit+0x1a syscall(ffff8000212957d0) at syscall+0x5e2 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78fb7d1a8320, count: 2 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 "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/intr.c", line 699 ddb{1}> trace db_enter() at db_enter+0x1c panic(ffffffff827a15bc) at panic+0x17b __assert(ffffffff8281ff28,ffffffff827abaa9,2bb,ffffffff827a3b15) at __assert+0x29 splraise(bced0db3) at splraise+0xb4 mtx_enter_try(fffffd806ef64438) at mtx_enter_try+0x73 mtx_enter(fffffd806ef64438) at mtx_enter+0x4f knote_remove(ffff80002127f540,fffffd806ef64438,fffffd806ef644c0,3,0) at knote_remove+0x20d knote_fdclose(ffff80002127f540,3) at knote_fdclose+0xae fdfree(ffff80002127f540) at fdfree+0xdf exit1(ffff80002127f540,0,0,1) at exit1+0x3ff sys_exit(ffff80002127f540,ffff800021295700,ffff800021295750) at sys_exit+0x1a syscall(ffff8000212957d0) at syscall+0x5e2 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78fb7d1a8320, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800021295340 rbx 0xffff800020d59b9f rdx 0x3fd rcx 0 rax 0x92 r8 0x101010101010101 r9 0x8080808080808080 r10 0x602749be0eb3aab2 r11 0x457343b1872fcbdb r12 0xffff800020d599a0 r13 0 r14 0 r15 0x1 rip 0xffffffff81508bec db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800021295330 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor1939936622) pid=98160 stat=onproc flags process=1008 proc=2000 pri=0, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002121ed68,0xffff80002127f000 process=0xffff800021281938 user=0xffff800021290000, vmspace=0xfffffd806c354cc8 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 29373 518339 31386 0 7 0 syz-executor1939936622 9393 232192 26094 0 3 0x80 nanoslp syz-executor1939936622 18323 208810 26094 0 3 0x80 nanoslp syz-executor1939936622 7623 140577 26094 0 3 0x80 nanoslp syz-executor1939936622 5302 158487 26094 0 3 0x80 nanoslp syz-executor1939936622 83458 245869 26094 0 3 0 biowait syz-executor1939936622 53047 460281 26094 0 3 0 biowait syz-executor1939936622 72187 179165 26094 0 3 0x80 nanoslp syz-executor1939936622 31386 158288 26094 0 3 0x80 nanoslp syz-executor1939936622 26094 19033 15343 0 3 0x82 nanoslp syz-executor1939936622 15343 450019 9600 0 3 0x10008a sigsusp ksh 9600 294331 93249 0 3 0x9a kqread sshd 58881 384116 1 0 3 0x100083 ttyin getty 93249 459860 1 0 3 0x88 kqread sshd 92793 400348 96648 74 3 0x1100092 bpf pflogd 96648 423173 1 0 3 0x80 netio pflogd 78502 443824 27205 73 3 0x1100090 kqread syslogd 27205 424038 1 0 3 0x100082 netio syslogd 1503 239974 1 0 3 0x100080 kqread resolvd 90195 29210 81537 77 3 0x100092 kqread dhcpleased 17646 397778 81537 77 3 0x100092 kqread dhcpleased 81537 219229 1 0 3 0x80 kqread dhcpleased 9258 73019 0 0 3 0x14200 bored smr 66580 444555 0 0 2 0x14200 zerothread 90080 42370 0 0 3 0x14200 aiodoned aiodoned 69076 307453 0 0 3 0x14200 syncer update 89517 135563 0 0 3 0x14200 cleaner cleaner 61786 312322 0 0 2 0x14200 reaper 15572 178064 0 0 3 0x14200 pgdaemon pagedaemon 62141 238846 0 0 3 0x14200 bored viomb 33971 497886 0 0 3 0x40014200 acpi0 acpi0 14254 41796 0 0 3 0x40014200 idle1 18599 106199 0 0 3 0x14200 bored softnet3 3595 514003 0 0 3 0x14200 bored softnet2 97211 8019 0 0 3 0x14200 bored softnet1 96772 58440 0 0 3 0x14200 bored softnet0 75428 377162 0 0 3 0x14200 bored systqmp 99864 299884 0 0 3 0x14200 bored systq 87589 150150 0 0 3 0x40014200 bored softclock 91492 55871 0 0 3 0x40014200 idle0 1 253978 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 83458 (syz-executor1939936622) thread 0xffff8000211b2ff8 (245869) exclusive rrwlock inode r = 0 (0xfffffd806c90b0a0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 #2 rrw_enter+0x8c #3 VOP_LOCK+0x8b #4 ufs_ihashins+0x46 #5 ffs_vget+0x141 #6 ffs_inode_alloc+0x1c2 #7 ufs_mkdir+0xf8 #8 VOP_MKDIR+0xc3 #9 domkdirat+0x125 #10 syscall+0x5e2 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cffeb38) #0 witness_lock+0x447 #1 rw_enter+0x3c8 #2 rrw_enter+0x8c #3 VOP_LOCK+0x8b #4 vn_lock+0x84 #5 vfs_lookup+0xd5 #6 namei+0x55a #7 domkdirat+0x79 #8 syscall+0x5e2 #9 Xsyscall+0x128 Process 53047 (syz-executor1939936622) thread 0xffff8000211b3d40 (460281) exclusive rrwlock inode r = 0 (0xfffffd806c90b3d0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 #2 rrw_enter+0x8c #3 VOP_LOCK+0x8b #4 vn_lock+0x84 #5 vget+0x200 #6 ufs_ihashget+0x121 #7 ffs_vget+0x7c #8 ufs_lookup+0x13ba #9 VOP_LOOKUP+0x5c #10 vfs_lookup+0x6e2 #11 namei+0x55a #12 dounlinkat+0x9d #13 syscall+0x5e2 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cffe6f8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 #2 rrw_enter+0x8c #3 VOP_LOCK+0x8b #4 vn_lock+0x84 #5 vfs_lookup+0xd5 #6 namei+0x55a #7 dounlinkat+0x9d #8 syscall+0x5e2 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10162 6455K 6456K 78643K 11240 0 pcb 13 8K 8K 78643K 13 0 rtable 58 1K 2K 78643K 114 0 pf 15 6K 10K 78643K 26 0 ifaddr 13 9K 9K 78643K 13 0 ifgroup 22 1K 1K 78643K 22 0 counters 44 33K 33K 78643K 44 0 ioctlops 0 0K 4K 78643K 1475 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1176 74K 74K 78643K 1192 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 1 0K 0K 78643K 1 0 proc 67 91K 91K 78643K 302 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 25 122K 122K 78643K 25 0 exec 0 0K 1K 78643K 269 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 156 70K 72K 78643K 9186 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 4 0K 0K 78643K 4 0 temp 1 5904K 5968K 78643K 4692 0 kqueue 11 16K 24K 78643K 812 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 20 0 17 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 144 35 0 20 1 0 1 1 0 8 0 syncache 304 5 0 5 2 1 1 1 0 8 1 tcpqe 32 151 0 151 1 1 0 1 0 8 0 tcpcb 808 797 0 790 2 0 2 2 0 8 1 arp 120 2 0 0 1 0 1 1 0 8 0 inpcb 368 1611 0 1603 2 0 2 2 0 8 1 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 9 0 2 1 0 1 1 0 8 0 pfstkey 128 9 0 2 1 0 1 1 0 8 0 pfstate 376 9 0 2 1 0 1 1 0 8 0 pfrule 1344 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 97 0 0 7 0 7 7 0 8 0 art_table 32 98 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2231 0 821 89 0 89 89 0 8 0 ffsino 272 2231 0 821 95 0 95 95 0 8 0 nchpl 144 4785 0 3190 60 0 60 60 0 8 0 uvmvnodes 80 2245 0 0 46 0 46 46 0 8 0 vnodes 216 2245 0 0 125 0 125 125 0 8 0 namei 1024 9311 0 9310 3 1 2 2 0 8 1 percpumem 16 35 0 0 1 0 1 1 0 8 0 kstatmem 264 8 0 0 1 0 1 1 0 8 0 scxspl 216 9942 0 9940 10 6 4 8 1 8 3 plimitpl 152 25 0 10 1 0 1 1 0 8 0 sigapl 424 1135 0 1089 7 1 6 6 0 8 0 futexpl 64 4265 0 4265 1 0 1 1 0 8 1 knotepl 120 50 0 0 2 0 2 2 0 8 0 kqueuepl 216 809 0 802 1 0 1 1 0 8 0 pipepl 320 94 0 91 2 1 1 1 0 8 0 fdescpl 496 1118 0 1093 4 0 4 4 0 8 0 filepl 152 5215 0 5155 3 0 3 3 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 104 71 0 59 1 0 1 1 0 8 0 zombiepl 144 1094 0 1089 2 1 1 1 0 8 0 processpl 1072 1135 0 1089 4 0 4 4 0 8 0 procpl 680 2313 0 2266 6 1 5 5 0 8 0 sockpl 488 1666 0 1640 6 1 5 5 0 8 1 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 248 0 0 31 0 31 31 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 273 0 0 18 0 18 18 0 8 0 bufpl 288 3373 0 90 235 0 235 235 0 8 0 anonpl 24 228526 0 226259 28 12 16 25 0 186 0 amapchunkpl 152 30457 0 30190 18 1 17 17 0 158 3 amappl16 200 6179 0 6170 6 5 1 5 0 8 0 amappl15 192 6 0 5 1 0 1 1 0 8 0 amappl14 184 109 0 98 1 0 1 1 0 8 0 amappl13 176 17 0 17 1 1 0 1 0 8 0 amappl12 168 1662 0 1637 3 1 2 2 0 8 0 amappl11 160 59 0 45 1 0 1 1 0 8 0 amappl10 152 21 0 21 2 2 0 1 0 8 0 amappl9 144 186 0 186 2 2 0 1 0 8 0 amappl8 136 28 0 26 1 0 1 1 0 8 0 amappl7 128 820 0 808 1 0 1 1 0 8 0 amappl6 120 158 0 143 1 0 1 1 0 8 0 amappl5 112 128 0 117 1 0 1 1 0 8 0 amappl4 104 467 0 434 1 0 1 1 0 8 0 amappl3 96 6934 0 6877 4 1 3 3 0 8 1 amappl2 88 1289 0 1237 2 0 2 2 0 8 0 amappl1 80 12624 0 12123 17 5 12 12 0 8 1 amappl 88 8870 0 8770 4 0 4 4 0 92 0 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 128 253 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1118 0 1093 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1118 0 1093 1 0 1 1 0 8 0 vmmpekpl 168 11531 0 11510 2 0 2 2 0 8 0 vmmpepl 168 68961 0 67638 77 8 69 69 0 357 5 vmsppl 464 1117 0 1093 4 0 4 4 0 8 0 rwobjpl 56 29069 0 26094 45 2 43 43 0 8 0 pdppl 4096 2244 0 2186 92 22 70 70 0 8 12 pvpl 32 399058 0 393516 64 14 50 57 0 265 1 pmappl 248 1117 0 1093 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 589 0 26 17 0 17 17 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bf2ff0) at x86_ipi_db+0x1e x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc intr_handler(ffff8000212cb5e0,ffff80000006bc00) at intr_handler+0x62 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_const_cmp4(ffff8000212cb770,ffff8000212cb770) at __sanitizer_cov_trace_const_cmp4+0x3c Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78fb7d1a81a0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff82bf2ff0) at x86_ipi_db+0x1e x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc intr_handler(ffff8000212cb5e0,ffff80000006bc00) at intr_handler+0x62 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_const_cmp4(ffff8000212cb770,ffff8000212cb770) at __sanitizer_cov_trace_const_cmp4+0x3c Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78fb7d1a81a0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c panic(ffffffff827a15bc) at panic+0x17b __assert(ffffffff8281ff28,ffffffff827abaa9,2bb,ffffffff827a3b15) at __assert+0x29 splraise(bced0db3) at splraise+0xb4 mtx_enter_try(fffffd806ef64438) at mtx_enter_try+0x73 mtx_enter(fffffd806ef64438) at mtx_enter+0x4f knote_remove(ffff80002127f540,fffffd806ef64438,fffffd806ef644c0,3,0) at knote_remove+0x20d knote_fdclose(ffff80002127f540,3) at knote_fdclose+0xae fdfree(ffff80002127f540) at fdfree+0xdf exit1(ffff80002127f540,0,0,1) at exit1+0x3ff sys_exit(ffff80002127f540,ffff800021295700,ffff800021295750) at sys_exit+0x1a syscall(ffff8000212957d0) at syscall+0x5e2 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78fb7d1a8320, count: 2 ddb{1}> trace db_enter() at db_enter+0x1c panic(ffffffff827a15bc) at panic+0x17b __assert(ffffffff8281ff28,ffffffff827abaa9,2bb,ffffffff827a3b15) at __assert+0x29 splraise(bced0db3) at splraise+0xb4 mtx_enter_try(fffffd806ef64438) at mtx_enter_try+0x73 mtx_enter(fffffd806ef64438) at mtx_enter+0x4f knote_remove(ffff80002127f540,fffffd806ef64438,fffffd806ef644c0,3,0) at knote_remove+0x20d knote_fdclose(ffff80002127f540,3) at knote_fdclose+0xae fdfree(ffff80002127f540) at fdfree+0xdf exit1(ffff80002127f540,0,0,1) at exit1+0x3ff sys_exit(ffff80002127f540,ffff800021295700,ffff800021295750) at sys_exit+0x1a syscall(ffff8000212957d0) at syscall+0x5e2 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78fb7d1a8320, count: -13 ddb{1}>