panic: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/setuid/kernel/sys/arch/amd64/amd64/intr.c", line 699 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 112838 36785 0 0x12 0 1 sshd db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279cfd2) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f915,ffffffff8283c480,2bb,ffffffff827a1cb3) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(a10fa244) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f12a870) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f12a870) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000212d2aa8,fffffd806f12a870,fffffd806f12a8f8,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212d2aa8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212d2aa8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212d2aa8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212d2aa8,ffff8000283a0ef0,ffff8000283a0f40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000283a0fc0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000283a0fc0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x777520d3d480, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/setuid/kernel/sys/arch/amd64/amd64/intr.c", line 699 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279cfd2) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f915,ffffffff8283c480,2bb,ffffffff827a1cb3) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(a10fa244) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f12a870) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f12a870) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000212d2aa8,fffffd806f12a870,fffffd806f12a8f8,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212d2aa8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212d2aa8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212d2aa8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212d2aa8,ffff8000283a0ef0,ffff8000283a0f40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000283a0fc0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000283a0fc0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x777520d3d480, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000283a0b30 rbx 0xffffffff82bfdb9f cpu_info_full_primary+0x2b9f rdx 0 rcx 0xffff8000212d2aa8 rax 0xffffffff82bfcff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x7d688b311e445a0d r11 0x42801b849690bf3c r12 0xffffffff82bfd9a0 cpu_info_full_primary+0x29a0 r13 0 r14 0 r15 0x1 rip 0xffffffff8138849c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000283a0b20 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.3) pid=514251 stat=onproc flags process=1018 proc=2000 pri=0, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff8000212d3548,0xffff8000211ee818 process=0xffff80002613fab8 user=0xffff80002839c000, vmspace=0xfffffd806bbb23b8 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 64139 329970 65756 32767 2 0x10 syz-executor.2 64139 27854 65756 32767 2 0x4000010 syz-executor.2 64139 441589 65756 32767 3 0x4000090 fsleep syz-executor.2 11155 25498 63386 32767 2 0x10 syz-executor.4 11155 174382 63386 32767 3 0x4000090 fsleep syz-executor.4 11155 383539 63386 32767 3 0x4000090 fsleep syz-executor.4 11155 117193 63386 32767 2 0x4000010 syz-executor.4 10139 29110 26963 32767 2 0x490 syz-executor.7 10139 238035 26963 32767 3 0x4000090 fsleep syz-executor.7 10139 206383 26963 32767 3 0x4000090 pipewr syz-executor.7 78749 163505 47549 32767 2 0x10 syz-executor.5 47549 455347 13625 0 3 0x82 wait syz-executor.5 80601 110848 16685 32767 3 0x90 nanoslp syz-executor.6 16685 281269 13625 0 3 0x82 wait syz-executor.6 91224 315830 96232 32767 2 0x10 syz-executor.0 96232 156051 13625 0 3 0x82 wait syz-executor.0 77809 166080 54979 32767 3 0x90 nanoslp syz-executor.3 54979 169159 13625 0 3 0x82 wait syz-executor.3 26963 202646 41025 32767 3 0x90 nanoslp syz-executor.7 41025 182576 13625 0 3 0x82 wait syz-executor.7 61710 371351 0 0 3 0x14200 bored sosplice 63386 407262 52973 32767 2 0x490 syz-executor.4 52973 132782 13625 0 3 0x82 wait syz-executor.4 65756 11274 35519 32767 2 0x490 syz-executor.2 35519 180022 13625 0 3 0x82 wait syz-executor.2 10337 300745 45743 32767 2 0x490 syz-executor.1 45743 441539 13625 0 3 0x82 wait syz-executor.1 13625 234046 97602 0 3 0x2000082 wait syz-fuzzer 13625 444204 97602 0 3 0x6000082 nanoslp syz-fuzzer 13625 382122 97602 0 3 0x6000082 wait syz-fuzzer 13625 384579 97602 0 3 0x6000082 thrsleep syz-fuzzer 13625 221138 97602 0 3 0x6000082 wait syz-fuzzer 13625 40235 97602 0 3 0x6000082 wait syz-fuzzer 13625 224096 97602 0 3 0x6000082 thrsleep syz-fuzzer 13625 21209 97602 0 3 0x6000082 kqread syz-fuzzer 13625 435041 97602 0 3 0x6000082 thrsleep syz-fuzzer 13625 347817 97602 0 3 0x6000082 wait syz-fuzzer 13625 475821 97602 0 3 0x6000082 thrsleep syz-fuzzer 13625 68584 97602 0 3 0x6000082 thrsleep syz-fuzzer 13625 171665 97602 0 3 0x6000082 wait syz-fuzzer 13625 28757 97602 0 3 0x6000082 wait syz-fuzzer 13625 304992 97602 0 3 0x6000082 thrsleep syz-fuzzer 13625 382256 97602 0 3 0x6000082 wait syz-fuzzer 97602 301128 36785 0 3 0x10008a sigsusp ksh 36785 112838 27254 0 7 0x12 sshd 45973 449823 1 0 3 0x100083 ttyin getty 27254 74240 1 0 3 0x88 kqread sshd 79284 508062 5715 73 3 0x1100090 kqread syslogd 5715 226708 1 0 3 0x100082 netio syslogd 99920 480582 1 0 3 0x100080 kqread resolvd 53826 266068 87887 77 3 0x100092 kqread dhcpleased 64426 84205 87887 77 3 0x100092 kqread dhcpleased 87887 414096 1 0 3 0x80 kqread dhcpleased 10356 423363 0 0 3 0x14200 bored smr 74924 109599 0 0 2 0x14200 zerothread 40053 91498 0 0 3 0x14200 aiodoned aiodoned 18356 157600 0 0 3 0x14200 syncer update 86689 300764 0 0 3 0x14200 cleaner cleaner 39366 56184 0 0 2 0x14200 reaper 750 194011 0 0 3 0x14200 pgdaemon pagedaemon 95167 264986 0 0 3 0x14200 bored viomb 30893 414905 0 0 3 0x40014200 acpi0 acpi0 65625 124594 0 0 3 0x40014200 idle1 36764 410400 0 0 3 0x14200 bored softnet3 97231 202770 0 0 3 0x14200 bored softnet2 15219 177489 0 0 3 0x14200 bored softnet1 98688 240981 0 0 2 0x14200 softnet0 66468 50721 0 0 3 0x14200 bored systqmp 29775 122891 0 0 3 0x14200 bored systq 91216 38294 0 0 2 0x40014200 softclock 16774 509527 0 0 3 0x40014200 idle0 1 440893 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 11155 (syz-executor.4) thread 0xffff8000212d3548 (117193) exclusive rrwlock inode r = 0 (0xfffffd8075883a38) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 sys_ftruncate+0x12e sys/kern/vfs_syscalls.c:2872 #6 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #6 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #7 Xsyscall+0x128 Process 36785 (sshd) thread 0xffff8000211b3a98 (112838) exclusive rwlock netlock r = 0 (0xffffffff82c4c030) #0 witness_lock+0x447 #1 soo_kqfilter+0x35 sys/kern/uipc_socket.c:2135 #2 kqueue_register+0x9a2 filter_attach sys/kern/kern_event.c:751 [inline] #2 kqueue_register+0x9a2 sys/kern/kern_event.c:1233 #3 ppollregister_evts+0xa6 sys/kern/sys_generic.c:1048 #4 ppollregister+0x30f sys/kern/sys_generic.c:1146 #5 doppoll+0x1aa sys/kern/sys_generic.c:963 #6 sys_ppoll+0x137 sys/kern/sys_generic.c:916 #7 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #7 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #8 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10199 6410K 6420K 78643K 11356 0 pcb 13 12K 14K 78643K 17 0 rtable 252 7K 7K 78643K 1993 0 pf 29 8K 8K 78643K 81 0 ifaddr 44 15K 16K 78643K 154 0 ifgroup 50 2K 2K 78643K 154 0 sysctl 3 1K 1K 78643K 7 0 counters 60 35K 35K 78643K 112 0 ioctlops 0 0K 2K 78643K 132 0 iov 0 0K 18K 78643K 1676 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 4966 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 318 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 1799 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 121K 78643K 21742 0 sigio 0 0K 0K 78643K 297 0 proc 56 78K 115K 78643K 2315 0 subproc 104 6K 6K 78643K 442 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 1 0K 0K 78643K 9614 0 in_multi 99 7K 7K 78643K 586 0 ether_multi 1 0K 0K 78643K 25 0 mrt 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 133 599K 599K 78643K 133 0 exec 0 0K 1K 78643K 3419 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 455 94K 110K 78643K 214538 0 UVM aobj 131 4K 4K 78643K 140 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 465 0 NDP 11 0K 2K 78643K 105 0 temp 75 5936K 6048K 78643K 54169 0 kqueue 12 18K 36K 78643K 1901 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 1411 0 1408 24 23 1 4 0 8 0 rtentry 112 440 0 321 4 0 4 4 0 8 0 unpcb 144 35455 0 35442 202 199 3 11 0 8 2 syncache 304 325 0 325 39 38 1 1 0 8 1 tcpqe 32 623 0 623 38 37 1 1 0 8 1 tcpcb 808 10322 0 10304 197 194 3 16 0 8 1 arp 120 72 0 54 1 0 1 1 0 8 0 ipq 40 21 0 21 17 17 0 1 0 8 0 ipqe 40 75 0 75 17 17 0 1 0 8 0 inpcb 368 33486 0 33399 391 382 9 23 0 8 0 nd6 136 143 0 110 4 2 2 2 0 8 0 kcovpl 48 34 0 26 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1779 0 1291 37 6 31 32 0 8 0 art_table 32 1780 0 1291 7 2 5 5 0 8 0 art_node 16 439 0 330 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 1797 0 1787 1 0 1 1 0 8 0 shmpl 112 137 0 9 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 28868 0 27406 92 0 92 92 0 8 0 ffsino 272 28868 0 27406 98 0 98 98 0 8 0 nchpl 144 56511 0 54864 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 176736 0 176736 13 11 2 2 0 8 2 percpumem 16 69 0 26 1 0 1 1 0 8 0 kstatmem 264 74 0 52 2 0 2 2 0 8 0 scxspl 216 178457 0 178457 78 77 1 8 1 8 1 plimitpl 152 2321 0 2298 23 21 2 2 0 8 1 sigapl 424 21983 0 21930 7 0 7 7 0 8 0 futexpl 64 191711 0 191707 11 10 1 1 0 8 0 knotepl 120 1180 0 0 18 6 12 17 0 8 0 kqueuepl 216 4168 0 4160 72 71 1 7 0 8 0 pipepl 320 4632 0 4602 132 129 3 13 0 8 0 fdescpl 496 21965 0 21931 7 2 5 6 0 8 0 filepl 152 160262 0 159951 261 248 13 22 0 8 1 lockfpl 104 2430 0 2428 1 0 1 1 0 8 0 lockfspl 48 752 0 750 1 0 1 1 0 8 0 sessionpl 144 49 0 33 1 0 1 1 0 8 0 pgrppl 48 4891 0 4875 1 0 1 1 0 8 0 ucredpl 104 18102 0 18084 1 0 1 1 0 8 0 zombiepl 144 21933 0 21930 1 0 1 1 0 8 0 processpl 1072 21983 0 21930 5 1 4 5 0 8 0 procpl 680 60360 0 60284 48 40 8 8 0 8 1 sosppl 168 373 0 372 26 25 1 1 0 8 0 sockpl 488 71362 0 71253 1085 1070 15 38 0 8 1 mcl64k 65536 31 0 0 3 1 2 3 0 8 0 mcl16k 16384 44 0 0 4 2 2 3 0 8 0 mcl12k 12288 33 0 0 3 0 3 3 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 26 0 0 3 0 3 3 0 8 0 mcl4k 4096 73 0 0 3 0 3 3 0 8 0 mcl2k2 2112 17 0 0 2 0 2 2 0 8 0 mcl2k 2048 487 0 0 30 17 13 30 0 8 0 mtagpl 96 22 0 0 1 0 1 1 0 8 0 mbufpl 256 2392 0 0 73 0 73 73 0 8 0 bufpl 288 35780 0 29454 454 2 452 453 0 8 0 anonpl 24 2196202 0 2184632 246 150 96 106 0 186 0 amapchunkpl 152 681691 0 680798 202 164 38 52 0 158 2 amappl16 200 43753 0 43438 291 266 25 30 0 8 8 amappl15 192 16 0 15 3 2 1 1 0 8 0 amappl14 184 241 0 226 2 1 1 2 0 8 0 amappl13 176 22 0 22 3 3 0 1 0 8 0 amappl12 168 22996 0 22954 3 1 2 3 0 8 0 amappl11 160 55 0 44 1 0 1 1 0 8 0 amappl10 152 99 0 85 1 0 1 1 0 8 0 amappl9 144 355 0 354 1 0 1 1 0 8 0 amappl8 136 977 0 796 9 2 7 7 0 8 0 amappl7 128 183 0 168 2 0 2 2 0 8 0 amappl6 120 648 0 625 1 0 1 1 0 8 0 amappl5 112 637 0 629 1 0 1 1 0 8 0 amappl4 104 1115 0 1069 2 0 2 2 0 8 0 amappl3 96 133207 0 133108 9 6 3 4 0 8 0 amappl2 88 23194 0 23113 3 1 2 3 0 8 0 amappl1 80 85835 0 85311 23 10 13 22 0 8 0 amappl 88 213041 0 212777 8 1 7 7 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 72 139 0 9 3 0 3 3 0 8 0 uaddrrnd 24 21965 0 21931 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21965 0 21931 1 0 1 1 0 8 0 vmmpekpl 168 164768 0 164694 4 0 4 4 0 8 0 vmmpepl 168 1262698 0 1260204 340 214 126 131 0 357 7 vmsppl 464 21964 0 21931 7 2 5 6 0 8 0 rwobjpl 56 312813 0 305287 131 21 110 111 0 8 0 pdppl 4096 43938 0 43862 838 756 82 94 0 8 6 pvpl 32 6222163 0 6204156 676 497 179 332 0 265 0 pmappl 248 21964 0 21931 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2291 0 1413 26 0 26 26 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279cfd2) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f915,ffffffff8283c480,2bb,ffffffff827a1cb3) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(a10fa244) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f12a870) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f12a870) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000212d2aa8,fffffd806f12a870,fffffd806f12a8f8,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212d2aa8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212d2aa8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212d2aa8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212d2aa8,ffff8000283a0ef0,ffff8000283a0f40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000283a0fc0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000283a0fc0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x777520d3d480, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800020d58ff0) 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(ffffffff82d48c68) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d48c68) at __mp_lock+0x122 sys/kern/kern_lock.c:147 doppoll(ffff8000211b3a98,43abfcc97e0,4,0,ffff8000212314a4,ffff800021231570) at doppoll+0x159 sys/kern/sys_generic.c:950 sys_ppoll(ffff8000211b3a98,ffff800021231520,ffff800021231570) at sys_ppoll+0x137 sys/kern/sys_generic.c:916 syscall(ffff8000212315f0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000212315f0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7309576a0b00, count: 7 ddb{1}> trace x86_ipi_db(ffff800020d58ff0) 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(ffffffff82d48c68) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d48c68) at __mp_lock+0x122 sys/kern/kern_lock.c:147 doppoll(ffff8000211b3a98,43abfcc97e0,4,0,ffff8000212314a4,ffff800021231570) at doppoll+0x159 sys/kern/sys_generic.c:950 sys_ppoll(ffff8000211b3a98,ffff800021231520,ffff800021231570) at sys_ppoll+0x137 sys/kern/sys_generic.c:916 syscall(ffff8000212315f0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000212315f0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7309576a0b00, count: -8