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 320890 61989 32767 0x10 0 0 syz-executor.6 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(d2f34d49) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f3641b0) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f3641b0) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff800021225540,fffffd806f3641b0,fffffd806f364238,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff800021225540,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff800021225540) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff800021225540,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff800021225540,ffff80002e411b60,ffff80002e411bb0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e411c30) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e411c30) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78d473c65240, 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(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(d2f34d49) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f3641b0) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f3641b0) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff800021225540,fffffd806f3641b0,fffffd806f364238,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff800021225540,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff800021225540) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff800021225540,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff800021225540,ffff80002e411b60,ffff80002e411bb0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e411c30) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e411c30) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78d473c65240, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e4117a0 rbx 0xffff800020d59b9f rdx 0 rcx 0xffff800021225540 rax 0xffff800020d58ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xc346b0bfecb663ad r11 0x2628dca8ae5e1622 r12 0xffff800020d599a0 r13 0 r14 0 r15 0x1 rip 0xffffffff82173d1c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e411790 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=302364 stat=onproc flags process=1018 proc=2000 pri=0, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000211d8ac0,0xffff8000212252a8 process=0xffff8000ffff4878 user=0xffff80002e40c000, vmspace=0xfffffd807eff93a0 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61989 320890 28881 32767 7 0x10 syz-executor.6 54854 97244 84890 32767 2 0x10 syz-executor.5 81513 484067 12956 32767 2 0x10 syz-executor.0 81513 523215 12956 32767 3 0x4000090 fsleep syz-executor.0 76344 46079 44764 32767 3 0x90 nanoslp syz-executor.3 76344 284013 44764 32767 3 0x4000090 ttyin syz-executor.3 76344 187657 44764 32767 3 0x4000090 fsleep syz-executor.3 76344 434293 44764 32767 3 0x4000090 fsleep syz-executor.3 84890 402379 19442 32767 3 0x90 nanoslp syz-executor.5 19442 481448 46116 0 3 0x82 wait syz-executor.5 42249 221828 0 0 3 0x14200 bored sosplice 73272 361086 54973 32767 3 0x90 nanoslp syz-executor.1 48602 352084 7912 32767 2 0x10 syz-executor.7 28881 424391 67056 32767 3 0x90 nanoslp syz-executor.6 7912 240877 46116 0 3 0x82 wait syz-executor.7 67056 207235 46116 0 3 0x82 wait syz-executor.6 84015 398355 436 32767 2 0x10 syz-executor.2 46103 337088 58640 32767 3 0x10 biowait syz-executor.4 44764 127197 48328 32767 3 0x90 nanoslp syz-executor.3 54973 35478 46116 0 3 0x82 wait syz-executor.1 436 179111 46116 0 3 0x82 wait syz-executor.2 58640 366487 46116 0 3 0x82 wait syz-executor.4 12956 411692 51084 32767 3 0x90 nanoslp syz-executor.0 48328 443044 46116 0 3 0x82 wait syz-executor.3 51084 179981 46116 0 3 0x82 wait syz-executor.0 46116 502002 65914 0 3 0x2000082 wait syz-fuzzer 46116 453839 65914 0 3 0x6000082 nanoslp syz-fuzzer 46116 117555 65914 0 3 0x6000082 wait syz-fuzzer 46116 182234 65914 0 3 0x6000082 thrsleep syz-fuzzer 46116 347025 65914 0 3 0x6000082 wait syz-fuzzer 46116 248591 65914 0 3 0x6000082 wait syz-fuzzer 46116 521317 65914 0 3 0x6000082 thrsleep syz-fuzzer 46116 518693 65914 0 3 0x6000082 thrsleep syz-fuzzer 46116 419700 65914 0 3 0x6000082 wait syz-fuzzer 46116 70251 65914 0 3 0x6000082 kqread syz-fuzzer 46116 149501 65914 0 3 0x6000082 thrsleep syz-fuzzer 46116 355477 65914 0 3 0x6000082 wait syz-fuzzer 46116 282463 65914 0 3 0x6000082 wait syz-fuzzer 46116 10020 65914 0 3 0x6000082 thrsleep syz-fuzzer 46116 392785 65914 0 3 0x6000082 wait syz-fuzzer 46116 197986 65914 0 3 0x6000082 thrsleep syz-fuzzer 65914 165945 44349 0 3 0x10008a sigsusp ksh 44349 354968 61358 0 3 0x9a kqread sshd 51304 87612 1 0 3 0x100083 ttyin getty 61358 127512 1 0 3 0x88 kqread sshd 8868 217413 97763 73 3 0x1100090 kqread syslogd 97763 2570 1 0 3 0x100082 netio syslogd 900 453367 1 0 3 0x100080 kqread resolvd 88617 73488 2907 77 3 0x100092 kqread dhcpleased 15989 306257 2907 77 3 0x100092 kqread dhcpleased 2907 502307 1 0 3 0x80 kqread dhcpleased 112 487726 0 0 3 0x14200 bored smr 87387 13013 0 0 2 0x14200 zerothread 32396 502310 0 0 3 0x14200 aiodoned aiodoned 1205 114226 0 0 3 0x14200 syncer update 42243 170413 0 0 3 0x14200 cleaner cleaner 78328 376433 0 0 2 0x14200 reaper 41786 319306 0 0 3 0x14200 pgdaemon pagedaemon 28980 269259 0 0 3 0x14200 bored viomb 57870 348185 0 0 3 0x40014200 acpi0 acpi0 20197 299844 0 0 3 0x40014200 idle1 80897 71554 0 0 3 0x14200 bored softnet3 51513 265680 0 0 3 0x14200 bored softnet2 95574 403434 0 0 3 0x14200 bored softnet1 1885 332661 0 0 2 0x14200 softnet0 99735 202041 0 0 3 0x14200 bored systqmp 2350 75479 0 0 3 0x14200 bored systq 64791 28964 0 0 3 0x40014200 bored softclock 63489 333625 0 0 3 0x40014200 idle0 1 459881 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 61989 (syz-executor.6) thread 0xffff8000211d9560 (320890) exclusive rwlock amaplk r = 0 (0xfffffd806b7f8a98) #0 witness_lock+0x447 #1 uvm_fault_check+0x41a sys/uvm/uvm_fault.c:782 #2 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #3 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #4 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd8067b61a30) #0 witness_lock+0x447 #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x3e sys/uvm/uvm_fault.c:672 #3 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #4 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 Process 46103 (syz-executor.4) thread 0xffff80002121a818 (337088) exclusive rrwlock inode r = 0 (0xfffffd8076b8f3d8) #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 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343 #6 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80688ce0a0) #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 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058 #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 10208 6411K 6420K 78643K 11293 0 pcb 13 12K 14K 78643K 17 0 rtable 236 6K 7K 78643K 827 0 pf 29 8K 8K 78643K 33 0 ifaddr 44 15K 15K 78643K 54 0 ifgroup 50 2K 2K 78643K 58 0 sysctl 2 0K 0K 78643K 2 0 counters 60 35K 35K 78643K 64 0 ioctlops 0 0K 2K 78643K 81 0 iov 0 0K 16K 78643K 365 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 3201 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 39 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 488 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 121K 78643K 5174 0 sigio 0 0K 0K 78643K 141 0 proc 56 78K 103K 78643K 685 0 subproc 104 6K 6K 78643K 130 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 158 0 in_multi 99 7K 7K 78643K 154 0 ether_multi 1 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 187 837K 837K 78643K 187 0 exec 0 0K 1K 78643K 1123 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 371 85K 91K 78643K 52188 0 UVM aobj 131 6K 6K 78643K 139 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 106 0 NDP 11 0K 2K 78643K 33 0 temp 74 5920K 5984K 78643K 17865 0 kqueue 12 18K 32K 78643K 1017 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 120 321 0 318 6 5 1 5 0 8 0 rtentry 112 141 0 30 4 0 4 4 0 8 0 unpcb 144 2967 0 2954 42 39 3 10 0 8 2 syncache 304 44 0 44 7 6 1 1 0 8 1 tcpqe 32 310 0 310 7 7 0 1 0 8 0 tcpcb 808 1341 0 1322 33 24 9 15 0 8 6 arp 120 22 0 4 1 0 1 1 0 8 0 ipq 40 4 0 3 2 1 1 1 0 8 0 ipqe 40 13 0 12 2 1 1 1 0 8 0 inpcb 368 6304 0 6279 91 80 11 16 0 8 8 nd6 136 38 0 13 1 0 1 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 567 0 113 29 0 29 29 0 8 0 art_table 32 568 0 113 4 0 4 4 0 8 0 art_node 16 140 0 39 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 6 1 0 1 1 0 8 0 semapl 112 486 0 476 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9052 0 7609 91 0 91 91 0 8 0 ffsino 272 9052 0 7609 97 0 97 97 0 8 0 nchpl 144 15913 0 14273 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 55286 0 55285 5 4 1 2 0 8 0 percpumem 16 45 0 2 1 0 1 1 0 8 0 kstatmem 264 26 0 4 2 0 2 2 0 8 0 scxspl 216 50806 0 50805 18 17 1 8 1 8 0 plimitpl 152 1318 0 1294 7 6 1 2 0 8 0 sigapl 424 5466 0 5414 7 0 7 7 0 8 0 futexpl 64 39967 0 39964 6 5 1 1 0 8 0 knotepl 120 483 0 0 12 0 12 12 0 8 0 kqueuepl 216 1552 0 1543 15 14 1 7 0 8 0 pipepl 320 1162 0 1134 33 29 4 13 0 8 1 fdescpl 496 5448 0 5414 7 2 5 6 0 8 0 filepl 152 39592 0 39353 83 68 15 22 0 8 5 lockfpl 104 977 0 975 1 0 1 1 0 8 0 lockfspl 48 324 0 322 1 0 1 1 0 8 0 sessionpl 144 25 0 9 1 0 1 1 0 8 0 pgrppl 48 125 0 109 1 0 1 1 0 8 0 ucredpl 104 11430 0 11412 1 0 1 1 0 8 0 zombiepl 144 5415 0 5414 1 0 1 1 0 8 0 processpl 1072 5466 0 5414 5 1 4 5 0 8 0 procpl 680 14325 0 14253 17 9 8 8 0 8 1 sosppl 168 55 0 55 7 6 1 1 0 8 1 sockpl 488 9791 0 9750 247 233 14 35 0 8 8 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 11 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 13 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 320 0 0 36 5 31 36 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 1052 0 0 57 0 57 57 0 8 0 bufpl 288 12084 0 5758 453 0 453 453 0 8 0 anonpl 24 629897 0 618813 155 35 120 120 0 186 37 amapchunkpl 152 165518 0 164663 70 25 45 49 0 158 7 amappl16 200 13347 0 13083 54 30 24 27 0 8 8 amappl15 192 15 0 13 1 0 1 1 0 8 0 amappl14 184 184 0 170 2 1 1 2 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 6111 0 6074 3 0 3 3 0 8 0 amappl11 160 98 0 87 1 0 1 1 0 8 0 amappl10 152 28 0 18 1 0 1 1 0 8 0 amappl9 144 240 0 239 1 0 1 1 0 8 0 amappl8 136 376 0 274 4 0 4 4 0 8 0 amappl7 128 93 0 82 2 0 2 2 0 8 0 amappl6 120 270 0 249 1 0 1 1 0 8 0 amappl5 112 249 0 241 1 0 1 1 0 8 0 amappl4 104 640 0 599 2 0 2 2 0 8 0 amappl3 96 32862 0 32774 7 4 3 4 0 8 0 amappl2 88 5869 0 5789 3 1 2 3 0 8 0 amappl1 80 27000 0 26478 22 9 13 22 0 8 0 amappl 88 51506 0 51266 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 72 138 0 8 3 0 3 3 0 8 0 uaddrrnd 24 5448 0 5414 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5448 0 5414 1 0 1 1 0 8 0 vmmpekpl 168 42449 0 42395 4 0 4 4 0 8 0 vmmpepl 168 326531 0 324223 146 32 114 116 0 357 5 vmsppl 464 5447 0 5414 7 2 5 6 0 8 0 rwobjpl 56 89597 0 82239 111 4 107 108 0 8 1 pdppl 4096 10904 0 10828 234 152 82 96 0 8 6 pvpl 32 1808933 0 1791608 407 196 211 334 0 265 56 pmappl 248 5447 0 5414 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1161 0 276 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bafff0) 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 intr_handler(ffff80002e3fee30,ffff80000027b500) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f Xspllower() at Xspllower+0x1d uvm_pmr_getpages(1,0,0,1,0,1,a2c876e5fc556643,0) at uvm_pmr_getpages+0xeef sys/uvm/uvm_pmemrange.c:1207 uvm_pagealloc(fffffd8067a76bf0,20d7000,0,3) at uvm_pagealloc+0x1a8 sys/uvm/uvm_page.c:910 pmap_get_ptp(fffffd8067a76ba0,835db86e000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209 pmap_enter(fffffd8067a76ba0,835db86e000,698ad000,3,21) at pmap_enter+0x2be sys/arch/amd64/amd64/pmap.c:2716 uvm_fault_upper(ffff80002e3ff450,ffff80002e3ff488,ffff80002e3ff350,0) at uvm_fault_upper+0x2af sys/uvm/uvm_fault.c:1056 uvm_fault(fffffd8067b61938,835db86e000,0,1) at uvm_fault+0x154 sys/uvm/uvm_fault.c:608 upageflttrap(ffff80002e3ff5d0,835db86e000) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 end trace frame: 0xffff80002e3ff5c0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82bafff0) 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 intr_handler(ffff80002e3fee30,ffff80000027b500) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f Xspllower() at Xspllower+0x1d uvm_pmr_getpages(1,0,0,1,0,1,a2c876e5fc556643,0) at uvm_pmr_getpages+0xeef sys/uvm/uvm_pmemrange.c:1207 uvm_pagealloc(fffffd8067a76bf0,20d7000,0,3) at uvm_pagealloc+0x1a8 sys/uvm/uvm_page.c:910 pmap_get_ptp(fffffd8067a76ba0,835db86e000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209 pmap_enter(fffffd8067a76ba0,835db86e000,698ad000,3,21) at pmap_enter+0x2be sys/arch/amd64/amd64/pmap.c:2716 uvm_fault_upper(ffff80002e3ff450,ffff80002e3ff488,ffff80002e3ff350,0) at uvm_fault_upper+0x2af sys/uvm/uvm_fault.c:1056 uvm_fault(fffffd8067b61938,835db86e000,0,1) at uvm_fault+0x154 sys/uvm/uvm_fault.c:608 upageflttrap(ffff80002e3ff5d0,835db86e000) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002e3ff5d0) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x796f444a9780, count: -16 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(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(d2f34d49) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f3641b0) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f3641b0) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff800021225540,fffffd806f3641b0,fffffd806f364238,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff800021225540,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff800021225540) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff800021225540,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff800021225540,ffff80002e411b60,ffff80002e411bb0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e411c30) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e411c30) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78d473c65240, count: 2 ddb{1}> 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(d2f34d49) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd806f3641b0) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd806f3641b0) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff800021225540,fffffd806f3641b0,fffffd806f364238,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff800021225540,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff800021225540) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff800021225540,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff800021225540,ffff80002e411b60,ffff80002e411bb0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e411c30) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e411c30) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78d473c65240, count: -13