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 369596 18065 32767 0x10 0 1 syz-executor.3 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279d30b) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281e44b,ffffffff8283c848,2bb,ffffffff827a2681) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(fe265f8f) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f25e000) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f25e000) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000212a2ff8,fffffd806f25e000,fffffd806f25e088,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212a2ff8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212a2ff8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212a2ff8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212a2ff8,ffff80002e42d760,ffff80002e42d7b0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e42d830) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e42d830) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7580e45861e0, 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(ffffffff8279d30b) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281e44b,ffffffff8283c848,2bb,ffffffff827a2681) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(fe265f8f) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f25e000) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f25e000) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000212a2ff8,fffffd806f25e000,fffffd806f25e088,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212a2ff8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212a2ff8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212a2ff8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212a2ff8,ffff80002e42d760,ffff80002e42d7b0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e42d830) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e42d830) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7580e45861e0, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e42d3a0 rbx 0xffffffff82bb0b9f cpu_info_full_primary+0x2b9f rdx 0 rcx 0xffff8000212a2ff8 rax 0xffffffff82bafff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4854887c83be6809 r11 0x3bb046e5249171e3 r12 0xffffffff82bb09a0 cpu_info_full_primary+0x29a0 r13 0 r14 0 r15 0x1 rip 0xffffffff82173d1c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e42d390 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.2) pid=82519 stat=onproc flags process=1018 proc=2000 pri=0, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff8000212a3a98,0xffff8000212a3558 process=0xffff8000291cf258 user=0xffff80002e428000, vmspace=0xfffffd80718991e8 estcpu=24, cpticks=4, pctcpu=0.0 user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 68325 215655 74104 32767 2 0x10 syz-executor.1 68325 419182 74104 32767 3 0x4000090 fsleep syz-executor.1 68325 272316 74104 32767 3 0x4000090 fsleep syz-executor.1 8617 397063 81305 32767 2 0x10 syz-executor.7 8617 124345 81305 32767 3 0x4000090 netcon2 syz-executor.7 82539 258930 64702 32767 2 0x10 syz-executor.4 82539 268951 64702 32767 3 0x4000090 netio syz-executor.4 82539 399298 64702 32767 3 0x4000090 fsleep syz-executor.4 18065 369596 11527 32767 7 0x10 syz-executor.3 11527 467424 95177 0 3 0x82 wait syz-executor.3 4678 9288 4280 32767 2 0x490 syz-executor.0 4280 456292 95177 0 3 0x82 wait syz-executor.0 81305 61740 62921 32767 2 0x490 syz-executor.7 62921 387292 95177 0 3 0x82 wait syz-executor.7 68752 341896 53477 32767 2 0x10 syz-executor.5 53477 445359 95177 0 3 0x82 wait syz-executor.5 25191 312001 79783 32767 2 0x490 syz-executor.2 79783 98664 95177 0 3 0x82 wait syz-executor.2 66587 399754 0 0 3 0x14200 bored sosplice 74104 136861 26574 32767 3 0x90 nanoslp syz-executor.1 64702 168628 58230 32767 2 0x490 syz-executor.4 33037 49403 88004 32767 2 0x490 syz-executor.6 58230 216521 95177 0 3 0x82 wait syz-executor.4 88004 153141 95177 0 3 0x82 wait syz-executor.6 26574 84399 95177 0 3 0x82 wait syz-executor.1 95177 317755 30021 0 3 0x2000082 thrsleep syz-fuzzer 95177 35302 30021 0 2 0x6000482 syz-fuzzer 95177 365051 30021 0 3 0x6000082 wait syz-fuzzer 95177 435837 30021 0 3 0x6000082 thrsleep syz-fuzzer 95177 161627 30021 0 3 0x6000082 wait syz-fuzzer 95177 173262 30021 0 3 0x6000082 thrsleep syz-fuzzer 95177 19475 30021 0 3 0x6000082 kqread syz-fuzzer 95177 420481 30021 0 3 0x6000082 wait syz-fuzzer 95177 427620 30021 0 3 0x6000082 thrsleep syz-fuzzer 95177 519794 30021 0 3 0x6000082 wait syz-fuzzer 95177 14433 30021 0 3 0x6000082 thrsleep syz-fuzzer 95177 402482 30021 0 3 0x6000082 wait syz-fuzzer 95177 129145 30021 0 3 0x6000082 thrsleep syz-fuzzer 95177 270663 30021 0 3 0x6000082 wait syz-fuzzer 95177 90283 30021 0 3 0x6000082 wait syz-fuzzer 95177 225849 30021 0 3 0x6000082 wait syz-fuzzer 30021 512001 26188 0 3 0x10008a sigsusp ksh 26188 27133 19252 0 3 0x9a kqread sshd 15104 502697 1 0 3 0x100083 ttyin getty 19252 379676 1 0 3 0x88 kqread sshd 96560 468548 81070 73 3 0x1100090 kqread syslogd 81070 46526 1 0 3 0x100082 netio syslogd 96028 231245 1 0 3 0x100080 kqread resolvd 85652 4966 25715 77 3 0x100092 kqread dhcpleased 19073 459887 25715 77 3 0x100092 kqread dhcpleased 25715 444965 1 0 3 0x80 kqread dhcpleased 93717 61372 0 0 3 0x14200 bored smr 95048 399393 0 0 2 0x14200 zerothread 616 421578 0 0 3 0x14200 aiodoned aiodoned 68535 355275 0 0 3 0x14200 syncer update 93169 109492 0 0 3 0x14200 cleaner cleaner 67551 330846 0 0 2 0x14200 reaper 21392 386819 0 0 3 0x14200 pgdaemon pagedaemon 56567 499737 0 0 3 0x14200 bored viomb 61066 198224 0 0 3 0x40014200 acpi0 acpi0 93500 398246 0 0 3 0x40014200 idle1 52972 415754 0 0 3 0x14200 bored softnet3 58987 225572 0 0 3 0x14200 bored softnet2 32130 21182 0 0 3 0x14200 bored softnet1 14346 134970 0 0 3 0x14200 bored softnet0 7788 221454 0 0 3 0x14200 bored systqmp 21098 204934 0 0 3 0x14200 bored systq 109 412937 0 0 2 0x40014200 softclock 81510 112475 0 0 3 0x40014200 idle0 1 311937 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 68752 (syz-executor.5) thread 0xffff80002120e810 (341896) exclusive rrwlock inode r = 0 (0xfffffd806e6c71b8) #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 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80653aa2b8) #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 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 6412K 6420K 78643K 11349 0 pcb 13 16K 20K 78643K 19 0 rtable 248 7K 7K 78643K 23483 0 pf 29 8K 8K 78643K 67 0 ifaddr 44 15K 15K 78643K 124 0 ifgroup 50 2K 2K 78643K 126 0 sysctl 2 0K 0K 78643K 2 0 counters 60 35K 35K 78643K 98 0 ioctlops 0 0K 2K 78643K 107 0 iov 0 0K 28K 78643K 2270 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 5383 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 384 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 5830 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 121K 78643K 27412 0 sigio 0 0K 0K 78643K 826 0 proc 56 78K 115K 78643K 3177 0 subproc 104 6K 6K 78643K 351 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 3370 0 in_multi 99 7K 7K 78643K 712 0 ether_multi 1 0K 0K 78643K 35 0 mrt 1 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 217 970K 970K 78643K 217 0 exec 0 0K 1K 78643K 3523 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 458 90K 104K 78643K 270460 0 UVM aobj 131 4K 4K 78643K 143 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 551 0 NDP 11 0K 2K 78643K 84 0 temp 74 5920K 6000K 78643K 67107 0 kqueue 12 18K 35K 78643K 2478 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 23602 0 23599 128 127 1 6 0 8 0 rtentry 112 354 0 237 4 0 4 4 0 8 0 unpcb 144 17377 0 17360 183 182 1 10 0 8 0 syncache 304 291 0 291 51 50 1 1 0 8 1 tcpqe 32 438 0 438 40 39 1 2 0 8 1 tcpcb 808 9069 0 9043 232 226 6 20 0 8 3 arp 120 61 0 42 1 0 1 1 0 8 0 ipq 40 32 0 32 14 14 0 1 0 8 0 ipqe 40 248 0 248 14 14 0 1 0 8 0 inpcb 368 18863 0 18832 281 275 6 25 0 8 3 nd6 136 110 0 80 2 0 2 2 0 8 0 kcovpl 48 27 0 19 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1386 0 910 36 6 30 31 0 8 0 art_table 32 1387 0 910 4 0 4 4 0 8 0 art_node 16 353 0 246 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 1 1 0 1 1 0 8 0 semapl 112 5828 0 5818 1 0 1 1 0 8 0 shmpl 112 140 0 12 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 36468 0 35021 91 0 91 91 0 8 0 ffsino 272 36468 0 35021 97 0 97 97 0 8 0 nchpl 144 72035 0 70393 63 0 63 63 0 8 0 uvmvnodes 80 6447 0 0 132 0 132 132 0 8 0 vnodes 216 6447 0 0 359 0 359 359 0 8 0 namei 1024 221463 0 221463 10 9 1 2 0 8 1 percpumem 16 62 0 19 1 0 1 1 0 8 0 kstatmem 264 60 0 38 2 0 2 2 0 8 0 scxspl 216 233804 0 233804 99 98 1 8 1 8 1 plimitpl 152 2716 0 2693 32 31 1 2 0 8 0 sigapl 424 27670 0 27617 7 0 7 7 0 8 0 futexpl 64 229776 0 229773 8 7 1 1 0 8 0 knotepl 120 1763 0 0 25 1 24 24 0 8 0 kqueuepl 216 6064 0 6056 105 104 1 7 0 8 0 pipepl 320 6227 0 6199 175 172 3 13 0 8 0 fdescpl 496 27652 0 27619 7 2 5 6 0 8 0 filepl 152 170946 0 170704 321 310 11 21 0 8 0 lockfpl 104 3401 0 3399 3 2 1 2 0 8 0 lockfspl 48 1070 0 1068 1 0 1 1 0 8 0 sessionpl 144 42 0 26 1 0 1 1 0 8 0 pgrppl 48 480 0 464 1 0 1 1 0 8 0 ucredpl 104 20409 0 20391 1 0 1 1 0 8 0 zombiepl 144 27620 0 27617 1 0 1 1 0 8 0 processpl 1072 27670 0 27617 5 1 4 5 0 8 0 procpl 680 76355 0 76281 59 51 8 9 0 8 1 sosppl 168 427 0 427 34 33 1 1 0 8 1 sockpl 488 71040 0 70989 981 971 10 37 0 8 3 mcl64k 65536 32 0 0 4 1 3 3 0 8 0 mcl16k 16384 49 0 0 4 1 3 3 0 8 0 mcl12k 12288 41 0 0 3 1 2 2 0 8 0 mcl9k 9216 33 0 0 2 0 2 2 0 8 0 mcl8k 8192 49 0 0 4 1 3 3 0 8 0 mcl4k 4096 99 0 0 5 1 4 4 0 8 0 mcl2k2 2112 13 0 0 1 0 1 1 0 8 0 mcl2k 2048 455 0 0 31 18 13 31 0 8 0 mtagpl 96 13 0 0 1 0 1 1 0 8 0 mbufpl 256 7871 0 0 412 0 412 412 0 8 0 bufpl 288 51050 0 44602 461 0 461 461 0 8 0 anonpl 24 2696340 0 2685102 316 219 97 121 0 186 0 amapchunkpl 152 859211 0 858352 256 218 38 50 0 158 0 amappl16 200 57395 0 57117 327 308 19 41 0 8 0 amappl15 192 12 0 11 3 2 1 1 0 8 0 amappl14 184 213 0 202 2 1 1 2 0 8 0 amappl13 176 18 0 18 6 6 0 1 0 8 0 amappl12 168 28631 0 28592 3 1 2 3 0 8 0 amappl11 160 60 0 50 1 0 1 1 0 8 0 amappl10 152 61 0 47 1 0 1 1 0 8 0 amappl9 144 436 0 435 1 0 1 1 0 8 0 amappl8 136 1036 0 812 8 0 8 8 0 8 0 amappl7 128 238 0 224 2 0 2 2 0 8 0 amappl6 120 660 0 631 2 1 1 2 0 8 0 amappl5 112 713 0 705 1 0 1 1 0 8 0 amappl4 104 1342 0 1288 3 1 2 3 0 8 0 amappl3 96 167607 0 167517 7 4 3 4 0 8 0 amappl2 88 29628 0 29543 3 1 2 3 0 8 0 amappl1 80 104378 0 103855 22 10 12 22 0 8 0 amappl 88 268731 0 268485 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 72 142 0 12 3 0 3 3 0 8 0 uaddrrnd 24 27652 0 27619 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 27652 0 27619 1 0 1 1 0 8 0 vmmpekpl 168 217108 0 217044 4 0 4 4 0 8 0 vmmpepl 168 1588473 0 1586023 371 251 120 136 0 357 0 vmsppl 464 27651 0 27619 7 2 5 6 0 8 0 rwobjpl 56 390894 0 382858 139 23 116 118 0 8 0 pdppl 4096 55312 0 55238 815 735 80 96 0 8 6 pvpl 32 8097596 0 8080016 911 742 169 349 0 265 0 pmappl 248 27651 0 27619 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2549 0 1326 36 0 36 36 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(ffffffff8279d30b) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281e44b,ffffffff8283c848,2bb,ffffffff827a2681) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(fe265f8f) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f25e000) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f25e000) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000212a2ff8,fffffd806f25e000,fffffd806f25e088,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212a2ff8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212a2ff8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212a2ff8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212a2ff8,ffff80002e42d760,ffff80002e42d7b0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e42d830) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e42d830) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7580e45861e0, 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(ffffffff82c532e8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c532e8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff8000212851d0) at syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000212851d0) at syscall+0x5cd sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7827bec18690, count: 9 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(ffffffff82c532e8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c532e8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff8000212851d0) at syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000212851d0) at syscall+0x5cd sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7827bec18690, count: -6