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 485479 67361 0 0x2000002 0x4000000 0 syz-fuzzer db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a0dbf) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f487,ffffffff82838b3c,2bb,ffffffff8279e3af) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(8a876c3e) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f586bd0) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f586bd0) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000212737e8,fffffd806f586bd0,fffffd806f586c58,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212737e8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212737e8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212737e8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212737e8,ffff80002655bdf0,ffff80002655be40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002655bec0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002655bec0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x713eb1448410, 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/setuid/kernel/sys/arch/amd64/amd64/intr.c", line 699 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a0dbf) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f487,ffffffff82838b3c,2bb,ffffffff8279e3af) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(8a876c3e) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f586bd0) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f586bd0) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000212737e8,fffffd806f586bd0,fffffd806f586c58,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212737e8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212737e8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212737e8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212737e8,ffff80002655bdf0,ffff80002655be40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002655bec0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002655bec0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x713eb1448410, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002655ba30 rbx 0xffff800020d59b9f rdx 0 rcx 0xffff8000212737e8 rax 0xffff800020d58ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xb52e264edfdd78f r11 0x22e77a5ee32651d3 r12 0xffff800020d599a0 r13 0 r14 0 r15 0x1 rip 0xffffffff8248a28c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002655ba20 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.4) pid=388120 stat=onproc flags process=1018 proc=2000 pri=0, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff8000212a4ff8,0xffff800021273550 process=0xffff8000ffff4448 user=0xffff800026556000, vmspace=0xfffffd806ba14758 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 69351 31630 55812 32767 2 0x10 syz-executor.0 59294 216655 6362 32767 2 0x10 syz-executor.2 9614 344653 85450 32767 2 0x10 syz-executor.7 9614 164400 85450 32767 2 0x4000010 syz-executor.7 87087 191693 53740 32767 3 0x90 nanoslp syz-executor.4 53740 55593 67361 0 3 0x82 wait syz-executor.4 85450 194136 24734 32767 3 0x90 nanoslp syz-executor.7 24734 141993 67361 0 3 0x82 wait syz-executor.7 32419 398993 27250 32767 3 0x10 biowait syz-executor.6 27250 25373 67361 0 3 0x82 wait syz-executor.6 55812 93161 54579 32767 3 0x90 nanoslp syz-executor.0 54579 159688 67361 0 3 0x82 wait syz-executor.0 59458 52717 74659 32767 3 0x10 biowait syz-executor.3 74659 48073 67361 0 3 0x82 wait syz-executor.3 28470 363090 0 0 3 0x14200 bored sosplice 13886 407314 98745 32767 3 0x90 nanoslp syz-executor.5 98745 424139 67361 0 3 0x82 wait syz-executor.5 6362 159912 98979 32767 2 0x10 syz-executor.2 98979 22970 67361 0 3 0x82 wait syz-executor.2 5706 378169 12343 32767 2 0x10 syz-executor.1 12343 11300 67361 0 3 0x82 wait syz-executor.1 67361 214378 67818 0 3 0x2000082 wait syz-fuzzer 67361 211211 67818 0 3 0x6000082 nanoslp syz-fuzzer 67361 473141 67818 0 3 0x6000082 thrsleep syz-fuzzer 67361 154808 67818 0 3 0x6000082 thrsleep syz-fuzzer 67361 37849 67818 0 3 0x6000082 wait syz-fuzzer 67361 72001 67818 0 3 0x6000082 wait syz-fuzzer 67361 485479 67818 0 7 0x6000002 syz-fuzzer 67361 359343 67818 0 3 0x6000082 wait syz-fuzzer 67361 246907 67818 0 3 0x6000082 thrsleep syz-fuzzer 67361 160459 67818 0 3 0x6000082 wait syz-fuzzer 67361 205226 67818 0 3 0x6000082 thrsleep syz-fuzzer 67361 359299 67818 0 2 0x6000002 syz-fuzzer 67361 502738 67818 0 3 0x6000082 wait syz-fuzzer 67361 188380 67818 0 3 0x6000082 wait syz-fuzzer 67361 184024 67818 0 3 0x6000082 wait syz-fuzzer 67361 237053 67818 0 3 0x6000082 thrsleep syz-fuzzer 67818 29793 6709 0 3 0x10008a sigsusp ksh 6709 225754 70311 0 2 0x12 sshd 63690 346550 1 0 3 0x100083 ttyin getty 70311 73295 1 0 3 0x88 kqread sshd 73122 284677 26767 73 3 0x1100090 kqread syslogd 26767 338502 1 0 3 0x100082 netio syslogd 81015 492557 1 0 3 0x100080 kqread resolvd 1189 17172 25806 77 3 0x100092 kqread dhcpleased 72896 324263 25806 77 3 0x100092 kqread dhcpleased 25806 367521 1 0 3 0x80 kqread dhcpleased 17559 163776 0 0 3 0x14200 bored smr 62374 316890 0 0 2 0x14200 zerothread 92523 288997 0 0 3 0x14200 aiodoned aiodoned 32608 194679 0 0 3 0x14200 syncer update 88352 30116 0 0 3 0x14200 cleaner cleaner 9362 350406 0 0 2 0x14200 reaper 16122 366807 0 0 3 0x14200 pgdaemon pagedaemon 69436 368790 0 0 3 0x14200 bored viomb 77566 462068 0 0 3 0x40014200 acpi0 acpi0 35948 4916 0 0 3 0x40014200 idle1 75818 502866 0 0 3 0x14200 bored softnet3 79437 242775 0 0 3 0x14200 bored softnet2 42364 148805 0 0 3 0x14200 bored softnet1 96208 77887 0 0 3 0x14200 bored softnet0 17495 6957 0 0 3 0x14200 bored systqmp 30945 372283 0 0 3 0x14200 bored systq 1708 227799 0 0 3 0x40014200 bored softclock 15273 435816 0 0 3 0x40014200 idle0 1 478455 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 32419 (syz-executor.6) thread 0xffff8000212a4558 (398993) exclusive rrwlock inode r = 0 (0xfffffd807df134e8) #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 (0xfffffd807df13d68) #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 Process 59458 (syz-executor.3) thread 0xffff8000212a4800 (52717) exclusive rrwlock inode r = 0 (0xfffffd807df13928) #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 (0xfffffd80759f3808) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10200 6410K 6420K 78643K 11330 0 pcb 13 10K 12K 78643K 15 0 rtable 234 6K 7K 78643K 2223 0 pf 29 8K 8K 78643K 63 0 ifaddr 44 15K 15K 78643K 116 0 ifgroup 50 2K 2K 78643K 118 0 sysctl 2 0K 0K 78643K 2 0 counters 60 35K 35K 78643K 94 0 ioctlops 0 0K 2K 78643K 70 0 iov 0 0K 18K 78643K 318 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 2650 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 87 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 635 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 121K 78643K 5049 0 sigio 0 0K 0K 78643K 154 0 proc 56 78K 103K 78643K 1317 0 subproc 104 6K 6K 78643K 325 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 286 0 in_multi 99 7K 7K 78643K 343 0 ether_multi 1 0K 0K 78643K 8 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 139 625K 625K 78643K 139 0 exec 0 0K 1K 78643K 964 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 394 94K 102K 78643K 51332 0 UVM aobj 131 6K 6K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 110 0 NDP 11 0K 2K 78643K 78 0 temp 74 5920K 6044K 78643K 17159 0 kqueue 12 18K 26K 78643K 445 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 3569 0 3566 26 22 4 4 0 8 3 rtentry 112 303 0 193 4 0 4 4 0 8 0 unpcb 144 8192 0 8179 47 43 4 9 0 8 3 syncache 304 44 0 44 10 10 0 1 0 8 0 tcpqe 32 443 0 443 6 6 0 1 0 8 0 tcpcb 808 2202 0 2189 57 49 8 15 0 8 4 arp 120 52 0 34 1 0 1 1 0 8 0 ipq 40 43 0 41 3 2 1 1 0 8 0 ipqe 40 169 0 164 3 2 1 1 0 8 0 inpcb 368 3800 0 3784 60 48 12 14 0 8 8 nd6 136 80 0 56 1 0 1 1 0 8 0 kcovpl 48 25 0 17 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1238 0 782 31 2 29 30 0 8 0 art_table 32 1239 0 782 4 0 4 4 0 8 0 art_node 16 302 0 202 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 1 0 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 629 0 619 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8044 0 6600 91 0 91 91 0 8 0 ffsino 272 8044 0 6600 97 0 97 97 0 8 0 nchpl 144 14541 0 12902 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 49938 0 49938 2 1 1 2 0 8 1 percpumem 16 60 0 17 1 0 1 1 0 8 0 kstatmem 264 56 0 34 2 0 2 2 0 8 0 scxspl 216 44605 0 44603 28 25 3 8 1 8 2 plimitpl 152 841 0 818 7 6 1 2 0 8 0 sigapl 424 5311 0 5259 7 0 7 7 0 8 0 futexpl 64 42648 0 42648 1 0 1 1 0 8 1 knotepl 120 333 0 0 11 1 10 11 0 8 0 kqueuepl 216 5215 0 5207 65 60 5 12 0 8 4 pipepl 320 1232 0 1204 30 22 8 9 0 8 5 fdescpl 496 5293 0 5260 7 2 5 6 0 8 0 filepl 152 44422 0 44187 88 70 18 26 0 8 8 lockfpl 104 751 0 749 1 0 1 1 0 8 0 lockfspl 48 283 0 281 1 0 1 1 0 8 0 sessionpl 144 40 0 24 1 0 1 1 0 8 0 pgrppl 48 120 0 104 1 0 1 1 0 8 0 ucredpl 104 5976 0 5958 1 0 1 1 0 8 0 zombiepl 144 5261 0 5259 1 0 1 1 0 8 0 processpl 1072 5311 0 5259 5 1 4 5 0 8 0 procpl 680 14003 0 13934 16 8 8 9 0 8 1 sosppl 168 73 0 73 8 7 1 1 0 8 1 sockpl 488 15839 0 15806 328 313 15 36 0 8 8 mcl64k 65536 19 0 0 3 1 2 3 0 8 0 mcl16k 16384 16 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 280 0 0 34 3 31 34 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 934 0 0 57 0 57 57 0 8 0 bufpl 288 12658 0 6336 452 0 452 452 0 8 0 anonpl 24 644205 0 633269 140 47 93 99 0 186 11 amapchunkpl 152 160723 0 159903 63 23 40 43 0 158 3 amappl16 200 14711 0 14409 61 35 26 30 0 8 8 amappl15 192 9 0 8 1 0 1 1 0 8 0 amappl14 184 204 0 191 2 1 1 2 0 8 0 amappl13 176 15 0 15 2 1 1 1 0 8 1 amappl12 168 6180 0 6147 2 0 2 2 0 8 0 amappl11 160 67 0 55 1 0 1 1 0 8 0 amappl10 152 53 0 41 1 0 1 1 0 8 0 amappl9 144 219 0 218 1 0 1 1 0 8 0 amappl8 136 486 0 375 4 0 4 4 0 8 0 amappl7 128 83 0 69 2 0 2 2 0 8 0 amappl6 120 377 0 358 1 0 1 1 0 8 0 amappl5 112 408 0 399 1 0 1 1 0 8 0 amappl4 104 776 0 740 2 0 2 2 0 8 0 amappl3 96 32178 0 32101 3 0 3 3 0 8 0 amappl2 88 5860 0 5787 3 1 2 3 0 8 0 amappl1 80 27931 0 27410 23 10 13 22 0 8 0 amappl 88 50497 0 50254 7 0 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 5293 0 5260 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5293 0 5260 1 0 1 1 0 8 0 vmmpekpl 168 44000 0 43937 4 0 4 4 0 8 0 vmmpepl 168 332280 0 329979 189 69 120 125 0 357 10 vmsppl 464 5292 0 5260 7 2 5 6 0 8 0 rwobjpl 56 93052 0 85658 112 3 109 109 0 8 3 pdppl 4096 10594 0 10520 318 236 82 94 0 8 8 pvpl 32 1670371 0 1653537 374 196 178 336 0 265 28 pmappl 248 5292 0 5260 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1233 0 350 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bc7ff0) 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(ffffffff82d6d010) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d6d010) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff8000212b1410,ffff80000027b500) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f end of kernel end trace frame: 0xc000ad7178, count: 9 ddb{0}> trace x86_ipi_db(ffffffff82bc7ff0) 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(ffffffff82d6d010) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d6d010) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff8000212b1410,ffff80000027b500) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f end of kernel end trace frame: 0xc000ad7178, count: -6 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(ffffffff827a0dbf) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f487,ffffffff82838b3c,2bb,ffffffff8279e3af) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(8a876c3e) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f586bd0) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f586bd0) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000212737e8,fffffd806f586bd0,fffffd806f586c58,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212737e8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212737e8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212737e8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212737e8,ffff80002655bdf0,ffff80002655be40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002655bec0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002655bec0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x713eb1448410, count: 2 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a0dbf) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f487,ffffffff82838b3c,2bb,ffffffff8279e3af) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(8a876c3e) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f586bd0) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f586bd0) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000212737e8,fffffd806f586bd0,fffffd806f586c58,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212737e8,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212737e8) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212737e8,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212737e8,ffff80002655bdf0,ffff80002655be40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002655bec0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002655bec0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x713eb1448410, count: -13