panic: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/intr.c", line 706 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *268679 5651 0 0x14000 0x200 1 reaper 208447 16280 0 0x14000 0x40000200 0 softclock db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8295dda1) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff829111d8,ffffffff8286fa57,2c2,ffffffff828c8038) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(e465bb20) at splraise+0xa9 sys/arch/amd64/amd64/intr.c:706 mtx_enter_try(fffffd806ad302f8) at mtx_enter_try+0x73 sys/kern/kern_lock.c:293 mtx_enter(fffffd806ad302f8) at mtx_enter+0x4e sys/kern/kern_lock.c:266 pmap_page_remove(fffffd80074f0800) at pmap_page_remove+0xa7 rcr3 machine/cpufunc.h:139 [inline] pmap_page_remove(fffffd80074f0800) at pmap_page_remove+0xa7 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline] pmap_page_remove(fffffd80074f0800) at pmap_page_remove+0xa7 sys/arch/amd64/amd64/pmap.c:1950 uvm_anfree_list(fffffd806847bb58,0) at uvm_anfree_list+0x98 amap_wipeout(fffffd8061d852c8) at amap_wipeout+0x1af sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff80002a155600,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1354 uvm_map_teardown(fffffd8066e6f8b0) at uvm_map_teardown+0x2f8 sys/uvm/uvm_map.c:2554 uvmspace_free(fffffd8066e6f8b0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a148cd8) at reaper+0x197 sys/kern/kern_exit.c:463 end trace frame: 0x0, 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 706 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8295dda1) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff829111d8,ffffffff8286fa57,2c2,ffffffff828c8038) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(e465bb20) at splraise+0xa9 sys/arch/amd64/amd64/intr.c:706 mtx_enter_try(fffffd806ad302f8) at mtx_enter_try+0x73 sys/kern/kern_lock.c:293 mtx_enter(fffffd806ad302f8) at mtx_enter+0x4e sys/kern/kern_lock.c:266 pmap_page_remove(fffffd80074f0800) at pmap_page_remove+0xa7 rcr3 machine/cpufunc.h:139 [inline] pmap_page_remove(fffffd80074f0800) at pmap_page_remove+0xa7 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline] pmap_page_remove(fffffd80074f0800) at pmap_page_remove+0xa7 sys/arch/amd64/amd64/pmap.c:1950 uvm_anfree_list(fffffd806847bb58,0) at uvm_anfree_list+0x98 amap_wipeout(fffffd8061d852c8) at amap_wipeout+0x1af sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff80002a155600,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1354 uvm_map_teardown(fffffd8066e6f8b0) at uvm_map_teardown+0x2f8 sys/uvm/uvm_map.c:2554 uvmspace_free(fffffd8066e6f8b0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a148cd8) at reaper+0x197 sys/kern/kern_exit.c:463 end trace frame: 0x0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a1552d0 rbx 0xffff800029cecd77 rdx 0 rcx 0xffff80002a148cd8 rax 0xffff800029cebff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xeb8a4702e11a9640 r11 0x49058bfe0546a650 r12 0xffff800029cecb78 r13 0 r14 0 r15 0x1 rip 0xffffffff8127899c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002a1552c0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (reaper) tid=268679 pid=5651 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=4, usrpri=60, slppri=4, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a1491f8,0xffff80002a1487c8 process=0xffff80002a15b9b8 user=0xffff80002a150000, vmspace=0xffffffff82d8b920 estcpu=10, cpticks=12, pctcpu=8.86, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 54939 486482 50164 0 2 0x8000000 syz-executor.0 54939 250131 50164 0 2 0xc000080 syz-executor.0 77136 397882 32760 0 2 0x8000000 syz-executor.6 77136 244686 32760 0 3 0xc000080 fsleep syz-executor.6 84011 267470 0 0 3 0x14200 acct acct 68935 483707 24600 0 2 0x8000000 syz-executor.3 68935 437858 24600 0 3 0xc000080 kqsel syz-executor.3 68935 69169 24600 0 3 0xc000080 kqsel syz-executor.3 79410 256705 40388 0 3 0x8000082 piperd syz-executor.1 50164 492205 40388 0 2 0x8000482 syz-executor.0 42511 129691 1 0 3 0x18000082 nanoslp getty 66271 523165 40388 0 3 0x8000082 piperd syz-executor.4 24600 337800 40388 0 3 0x8000082 nanoslp syz-executor.3 41383 395440 40388 0 2 0x8000002 syz-executor.7 32760 243479 40388 0 2 0x8000002 syz-executor.6 7945 143422 40388 0 2 0x8000002 syz-executor.2 46307 155500 0 0 3 0x14200 bored sosplice 40388 233720 44608 0 3 0x1a000082 thrsleep syz-fuzzer 40388 196373 44608 0 2 0x1e000482 syz-fuzzer 40388 198288 44608 0 3 0x1e000082 thrsleep syz-fuzzer 40388 490683 44608 0 3 0x1e000082 wait syz-fuzzer 40388 191532 44608 0 3 0x1e000082 wait syz-fuzzer 40388 374138 44608 0 3 0x1e000082 wait syz-fuzzer 40388 272739 44608 0 2 0x1e000002 syz-fuzzer 40388 95175 44608 0 3 0x1e000082 thrsleep syz-fuzzer 40388 167812 44608 0 3 0x1e000082 wait syz-fuzzer 40388 248698 44608 0 2 0x1e000002 syz-fuzzer 40388 98261 44608 0 3 0x1e000082 thrsleep syz-fuzzer 40388 117436 44608 0 3 0x1e000082 wait syz-fuzzer 40388 165951 44608 0 3 0x1e000082 wait syz-fuzzer 40388 422103 44608 0 3 0x1e000082 wait syz-fuzzer 40388 339083 44608 0 3 0x1e000082 wait syz-fuzzer 40388 192413 44608 0 3 0x1e000082 kqread syz-fuzzer 44608 317715 34221 0 3 0x810008a sigsusp ksh 34221 290577 50307 0 3 0x1800009a kqread sshd 50307 187828 1 0 3 0x18000088 kqread sshd 80003 522453 3558 73 3 0x19100090 kqread syslogd 3558 349595 1 0 3 0x18100082 sbwait syslogd 2000 183205 1 0 2 0x18100000 resolvd 52666 197573 62606 77 3 0x18100092 kqread dhcpleased 59545 7427 62606 77 3 0x18100092 kqread dhcpleased 62606 63852 1 0 3 0x18000080 kqread dhcpleased 22163 339964 0 0 3 0x14200 bored smr 39127 20072 0 0 2 0x14200 zerothread 59805 404126 0 0 3 0x14200 aiodoned aiodoned 72273 286491 0 0 3 0x14200 syncer update 15074 494751 0 0 3 0x14200 cleaner cleaner * 5651 268679 0 0 7 0x14200 reaper 22083 302470 0 0 3 0x14200 pgdaemon pagedaemon 8287 240611 0 0 3 0x14200 bored viomb 45210 44535 0 0 3 0x40014200 acpi0 acpi0 5811 345885 0 0 3 0x40014200 idle1 63762 313090 0 0 3 0x14200 bored softnet3 43492 478626 0 0 3 0x14200 bored softnet2 17451 113067 0 0 3 0x14200 bored softnet1 19271 477383 0 0 2 0x14200 softnet0 61532 201515 0 0 3 0x14200 bored systqmp 69726 112225 0 0 3 0x14200 bored systq 99500 103537 0 0 3 0x14200 tmoslp softclockmp 16280 208447 0 0 7 0x40014200 softclock 3452 297989 0 0 3 0x40014200 idle0 1 512139 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 2000 (resolvd) thread 0xffff8000ffffd490 (183205) exclusive rrwlock inode r = 0 (0xfffffd806f4be3d0) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:524 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 vn_closefile+0xc9 vn_close sys/kern/vfs_vnops.c:292 [inline] #5 vn_closefile+0xc9 sys/kern/vfs_vnops.c:609 #6 fdrop+0xd5 sys/kern/kern_descrip.c:1274 #7 closef+0x120 sys/kern/kern_descrip.c:1258 #8 finishdup+0x311 sys/kern/kern_descrip.c:686 #9 syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] #9 syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 Process 5651 (reaper) thread 0xffff80002a148cd8 (268679) exclusive rwlock amaplk r = 0 (0xfffffd8060313da8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 amap_unref+0x2f sys/uvm/uvm_amap.c:1360 #2 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1354 #3 uvm_map_teardown+0x2f8 sys/uvm/uvm_map.c:2554 #4 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 #5 reaper+0x197 sys/kern/kern_exit.c:463 #6 proc_trampoline+0x10 Process 19271 (softnet0) thread 0xffff8000ffffea40 (477383) shared rwlock softnet0 r = 0 (0xffff80000002c070) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 taskq_thread+0xda sys/kern/kern_task.c:444 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10205 6510K 6957K 166960K 13339 0 pcb 18 12K 12K 166960K 239 0 rtable 198 7K 8K 166960K 1096 0 pf 31 9K 10K 166960K 125 0 ifaddr 38 14K 16K 166960K 146 0 ifgroup 54 2K 2K 166960K 201 0 sysctl 3 0K 1K 166960K 6 0 counters 64 36K 37K 166960K 140 0 ioctlops 0 0K 4K 166960K 1564 0 iov 0 0K 16K 166960K 109 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1383 87K 87K 166960K 2588 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 51 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 111 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 12 41K 89K 166960K 1657 0 sigio 0 0K 0K 166960K 28 0 proc 58 79K 115K 166960K 1088 0 subproc 91 5K 7K 166960K 338 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 217 0 in_multi 77 5K 7K 166960K 354 0 ether_multi 1 0K 0K 166960K 14 0 mrt 0 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 121 546K 546K 166960K 121 0 exec 0 0K 1K 166960K 776 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 267 105K 135K 166960K 16307 0 UVM aobj 57 5K 5K 166960K 66 0 pinsyscall 32 64K 100K 166960K 3325 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 99 0 NDP 15 0K 1K 166960K 101 0 temp 76 6820K 14756K 166960K 41690 0 kqueue 12 18K 28K 166960K 223 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 224 0 221 1 0 1 1 0 8 0 rtentry 112 365 0 276 4 0 4 4 0 8 0 unpcb 144 1153 0 1138 3 2 1 2 0 8 0 syncache 336 12 0 12 6 5 1 1 0 8 1 tcpqe 32 67 0 67 1 1 0 1 0 8 0 tcpcb 808 433 0 428 6 4 2 2 0 8 1 arp 120 69 0 55 1 0 1 1 0 8 0 inpcb 384 1585 0 1576 11 8 3 3 0 8 1 nd6 136 95 0 76 2 1 1 2 0 8 0 pkpcb 40 10 0 10 4 3 1 1 0 8 1 kcovpl 48 26 0 19 1 0 1 1 0 8 0 ppxss 1168 7 0 7 4 3 1 1 0 8 1 pffrag 232 25 0 13 1 0 1 1 0 482 0 pffrnode 88 25 0 13 1 0 1 1 0 8 0 pffrent 40 332 0 320 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 24 148 0 109 1 0 1 1 0 8 0 pfstkey 128 148 0 109 2 0 2 2 0 8 0 pfstate 376 148 0 109 5 0 5 5 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 1322 0 945 36 8 28 30 0 8 1 art_table 32 1323 0 945 4 0 4 4 0 8 0 art_node 16 361 0 280 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 9 1 0 1 1 0 8 0 semapl 112 107 0 97 1 0 1 1 0 8 0 shmpl 112 63 0 9 2 0 2 2 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 3851 0 2332 96 0 96 96 0 8 0 ffsino 272 3851 0 2332 103 0 103 103 0 8 0 nchpl 144 6353 0 4609 67 0 67 67 0 8 0 uvmvnodes 80 4833 0 0 99 0 99 99 0 8 0 vnodes 216 4833 0 0 269 0 269 269 0 8 0 namei 1024 23047 0 23047 3 2 1 2 0 8 1 percpumem 16 84 0 38 1 0 1 1 0 8 0 vcpupl 3904 10 0 1 2 0 2 2 0 8 0 vmpool 696 12 0 3 1 0 1 1 0 8 0 kstatmem 264 98 0 76 2 0 2 2 0 8 0 scsiplug 72 5 0 5 3 3 0 1 0 8 0 scxspl 216 35580 0 35580 18 14 4 8 1 8 4 plimitpl 152 314 0 299 1 0 1 1 0 8 0 sigapl 424 1965 0 1921 10 3 7 9 0 8 0 futexpl 64 24174 0 24173 3 2 1 1 0 8 0 knotepl 120 708 0 0 18 0 18 18 0 8 0 kqueuepl 216 443 0 433 2 0 2 2 0 8 1 pipepl 320 370 0 343 3 0 3 3 0 8 0 fdescpl 496 1921 0 1898 7 3 4 5 0 8 0 filepl 152 11935 0 11708 14 2 12 12 0 8 1 lockfpl 104 407 0 404 1 0 1 1 0 8 0 lockfspl 48 186 0 183 1 0 1 1 0 8 0 sessionpl 144 42 0 27 1 0 1 1 0 8 0 pgrppl 48 60 0 45 1 0 1 1 0 8 0 ucredpl 104 2124 0 2113 1 0 1 1 0 8 0 zombiepl 144 1922 0 1921 2 1 1 1 0 8 0 processpl 1136 1965 0 1921 6 1 5 6 0 8 0 procpl 656 3545 0 3482 11 3 8 9 0 8 0 srpgc 96 22 0 22 3 2 1 1 0 8 1 sosppl 168 6 0 6 5 4 1 1 0 8 1 sockpl 664 2990 0 2963 18 14 4 5 0 8 1 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 411 0 0 52 0 52 52 0 8 0 mtagpl 96 23 0 0 1 0 1 1 0 8 0 mbufpl 256 1137 0 0 62 0 62 62 0 8 0 bufpl 280 10844 0 2485 598 0 598 598 0 8 0 anonpl 24 431492 0 425175 148 66 82 119 0 186 19 amapchunkpl 152 54167 0 53585 58 28 30 47 0 158 2 amappl16 200 11472 0 11319 62 49 13 32 0 8 0 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 243 0 230 2 0 2 2 0 8 0 amappl13 176 13 0 13 1 1 0 1 0 8 0 amappl12 168 2880 0 2852 2 0 2 2 0 8 0 amappl11 160 116 0 106 1 0 1 1 0 8 0 amappl10 152 83 0 73 1 0 1 1 0 8 0 amappl9 144 233 0 233 2 2 0 1 0 8 0 amappl8 136 230 0 191 3 0 3 3 0 8 0 amappl7 128 67 0 51 1 0 1 1 0 8 0 amappl6 120 613 0 596 2 1 1 2 0 8 0 amappl5 112 248 0 236 1 0 1 1 0 8 0 amappl4 104 698 0 666 2 0 2 2 0 8 0 amappl3 96 10151 0 10089 3 0 3 3 0 8 0 amappl2 88 2411 0 2341 3 1 2 3 0 8 0 amappl1 80 15475 0 14995 22 10 12 22 0 8 0 amappl 88 15476 0 15307 6 0 6 6 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 65 0 9 2 0 2 2 0 8 0 uaddrrnd 24 1933 0 1901 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1933 0 1901 1 0 1 1 0 8 0 vmmpekpl 168 17468 0 17403 4 0 4 4 0 8 0 vmmpepl 168 141469 0 139747 156 56 100 116 0 357 6 vmsppl 440 1932 0 1900 6 1 5 5 0 8 0 rwobjpl 56 46139 0 40178 92 7 85 85 0 8 0 pdppl 4096 3873 0 3809 174 96 78 79 0 8 14 pvpl 32 45432 0 0 370 3 367 367 0 265 0 pmappl 248 1932 0 1900 4 1 3 3 0 8 0 pool(pmappl): free list modified: page 0xfffffd806ad30000; item ordinal 0; addr 0xfffffd806ad302f8 (p 0xfffffd806ad30000); offset 0x3c=0xdeadbef0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 554 0 120 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82cf3ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82ded128) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ded128) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82ded128,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x491 sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19a sys/kern/kern_synch.c:417 msleep(ffffffff82de3990,ffffffff82ce0c40,0,ffffffff8295c52b,0) at msleep+0xeb sys/kern/kern_synch.c:249 softclock_thread(ffff8000fffff710) at softclock_thread+0xcf sys/kern/kern_timeout.c:810 end trace frame: 0x0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff82cf3ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82ded128) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ded128) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82ded128,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x491 sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19a sys/kern/kern_synch.c:417 msleep(ffffffff82de3990,ffffffff82ce0c40,0,ffffffff8295c52b,0) at msleep+0xeb sys/kern/kern_synch.c:249 softclock_thread(ffff8000fffff710) at softclock_thread+0xcf sys/kern/kern_timeout.c:810 end trace frame: 0x0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8295dda1) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff829111d8,ffffffff8286fa57,2c2,ffffffff828c8038) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(e465bb20) at splraise+0xa9 sys/arch/amd64/amd64/intr.c:706 mtx_enter_try(fffffd806ad302f8) at mtx_enter_try+0x73 sys/kern/kern_lock.c:293 mtx_enter(fffffd806ad302f8) at mtx_enter+0x4e sys/kern/kern_lock.c:266 pmap_page_remove(fffffd80074f0800) at pmap_page_remove+0xa7 rcr3 machine/cpufunc.h:139 [inline] pmap_page_remove(fffffd80074f0800) at pmap_page_remove+0xa7 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline] pmap_page_remove(fffffd80074f0800) at pmap_page_remove+0xa7 sys/arch/amd64/amd64/pmap.c:1950 uvm_anfree_list(fffffd806847bb58,0) at uvm_anfree_list+0x98 amap_wipeout(fffffd8061d852c8) at amap_wipeout+0x1af sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff80002a155600,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1354 uvm_map_teardown(fffffd8066e6f8b0) at uvm_map_teardown+0x2f8 sys/uvm/uvm_map.c:2554 uvmspace_free(fffffd8066e6f8b0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a148cd8) at reaper+0x197 sys/kern/kern_exit.c:463 end trace frame: 0x0, count: 2 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8295dda1) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff829111d8,ffffffff8286fa57,2c2,ffffffff828c8038) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(e465bb20) at splraise+0xa9 sys/arch/amd64/amd64/intr.c:706 mtx_enter_try(fffffd806ad302f8) at mtx_enter_try+0x73 sys/kern/kern_lock.c:293 mtx_enter(fffffd806ad302f8) at mtx_enter+0x4e sys/kern/kern_lock.c:266 pmap_page_remove(fffffd80074f0800) at pmap_page_remove+0xa7 rcr3 machine/cpufunc.h:139 [inline] pmap_page_remove(fffffd80074f0800) at pmap_page_remove+0xa7 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline] pmap_page_remove(fffffd80074f0800) at pmap_page_remove+0xa7 sys/arch/amd64/amd64/pmap.c:1950 uvm_anfree_list(fffffd806847bb58,0) at uvm_anfree_list+0x98 amap_wipeout(fffffd8061d852c8) at amap_wipeout+0x1af sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff80002a155600,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1354 uvm_map_teardown(fffffd8066e6f8b0) at uvm_map_teardown+0x2f8 sys/uvm/uvm_map.c:2554 uvmspace_free(fffffd8066e6f8b0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a148cd8) at reaper+0x197 sys/kern/kern_exit.c:463 end trace frame: 0x0, count: -13