panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *308750 6440 0 0 0x4000000 0 syz-executor.2 48268 28279 0 0x2 0 1 syz-executor.1 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82860106) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8068165768,20620000,20630000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_wire(fffffd8068165768,20620000,20631000,3) at uvm_fault_wire+0xd7 uvm_fault_unwire sys/uvm/uvm_fault.c:1623 [inline] uvm_fault_wire(fffffd8068165768,20620000,20631000,3) at uvm_fault_wire+0xd7 sys/uvm/uvm_fault.c:1605 uvm_vslock_device(ffff8000211a3a98,20620100,10000,3,ffff80002e4b3318) at uvm_vslock_device+0xe9 sys/uvm/uvm_glue.c:170 physio(ffffffff82057cf0,d00,8000,ffffffff82058370,ffff80002e4b35f8) at physio+0x22c sys/kern/kern_physio.c:140 spec_read(ffff80002e4b3450) at spec_read+0xfa sys/kern/spec_vnops.c:215 VOP_READ(fffffd80684c6538,ffff80002e4b35f8,0,fffffd807f7d7478) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 vn_read(fffffd807d6e9ef8,ffff80002e4b35f8,0) at vn_read+0x12a sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000211a3a98,3,ffff80002e4b35f8,0,ffff80002e4b36e0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:247 sys_read(ffff8000211a3a98,ffff80002e4b3690,ffff80002e4b36e0) at sys_read+0x87 sys/kern/sys_generic.c:167 syscall(ffff80002e4b3760) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4b3760) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa57e25ecc0, 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: uvm_fault_unwire_locked: address not in map ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82860106) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8068165768,20620000,20630000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_wire(fffffd8068165768,20620000,20631000,3) at uvm_fault_wire+0xd7 uvm_fault_unwire sys/uvm/uvm_fault.c:1623 [inline] uvm_fault_wire(fffffd8068165768,20620000,20631000,3) at uvm_fault_wire+0xd7 sys/uvm/uvm_fault.c:1605 uvm_vslock_device(ffff8000211a3a98,20620100,10000,3,ffff80002e4b3318) at uvm_vslock_device+0xe9 sys/uvm/uvm_glue.c:170 physio(ffffffff82057cf0,d00,8000,ffffffff82058370,ffff80002e4b35f8) at physio+0x22c sys/kern/kern_physio.c:140 spec_read(ffff80002e4b3450) at spec_read+0xfa sys/kern/spec_vnops.c:215 VOP_READ(fffffd80684c6538,ffff80002e4b35f8,0,fffffd807f7d7478) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 vn_read(fffffd807d6e9ef8,ffff80002e4b35f8,0) at vn_read+0x12a sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000211a3a98,3,ffff80002e4b35f8,0,ffff80002e4b36e0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:247 sys_read(ffff8000211a3a98,ffff80002e4b3690,ffff80002e4b36e0) at sys_read+0x87 sys/kern/sys_generic.c:167 syscall(ffff80002e4b3760) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4b3760) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa57e25ecc0, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e4b3070 rbx 0xffffffff82c45ba7 cpu_info_full_primary+0x2ba7 rdx 0 rcx 0xffff8000211a3a98 rax 0xffffffff82c44ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x9f5f1b96c98aee81 r11 0xda73d9eed7e2c7ed r12 0xffffffff82c459a8 cpu_info_full_primary+0x29a8 r13 0 r14 0 r15 0x1 rip 0xffffffff81f68cdc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e4b3060 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.2) tid=308750 pid=6440 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=86, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002afca2c0,0xffff80002afcaac8 process=0xffff8000212a4878 user=0xffff80002e4ae000, vmspace=0xfffffd8068165768 estcpu=36, cpticks=7, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 12025 56385 6485 0 2 0 syz-executor.7 6440 53027 31833 0 2 0 syz-executor.2 6440 144693 31833 0 2 0x4000000 syz-executor.2 * 6440 308750 31833 0 7 0x4000000 syz-executor.2 6440 440424 31833 0 2 0x4000000 syz-executor.2 93624 246968 28279 0 3 0x80 nanoslp syz-executor.1 93624 19144 28279 0 3 0x4000080 kqpoll syz-executor.1 93624 45983 28279 0 3 0x4000080 fsleep syz-executor.1 93624 227618 28279 0 3 0x4000080 fsleep syz-executor.1 28279 48268 34034 0 7 0x2 syz-executor.1 4011 385871 0 0 3 0x14200 bored sosplice 42562 122983 0 0 3 0x14280 nfsidl nfsio 4826 268666 0 0 3 0x14280 nfsidl nfsio 71132 392853 0 0 3 0x14280 nfsidl nfsio 95215 264315 0 0 3 0x14280 nfsidl nfsio 54329 216520 0 0 3 0x14280 nfsidl nfsio 59040 336817 0 0 3 0x14280 nfsidl nfsio 30669 422019 0 0 3 0x14280 nfsidl nfsio 43101 124105 0 0 3 0x14280 nfsidl nfsio 50114 409351 0 0 3 0x14280 nfsidl nfsio 92590 170282 0 0 3 0x14280 nfsidl nfsio 66812 453143 0 0 3 0x14280 nfsidl nfsio 97099 336038 0 0 3 0x14280 nfsidl nfsio 67279 259229 0 0 3 0x14280 nfsidl nfsio 87412 193001 0 0 3 0x14280 nfsidl nfsio 30745 133526 0 0 3 0x14280 nfsidl nfsio 27272 422620 0 0 3 0x14280 nfsidl nfsio 43249 163341 0 0 3 0x14280 nfsidl nfsio 19548 88748 0 0 3 0x14280 nfsidl nfsio 55224 501471 0 0 3 0x14280 nfsidl nfsio 12592 288501 0 0 3 0x14280 nfsidl nfsio 69436 178544 34034 0 3 0x82 piperd syz-executor.6 6485 196893 34034 0 3 0x82 nanoslp syz-executor.7 16807 207667 34034 0 3 0x82 piperd syz-executor.5 35915 248843 34034 0 3 0x82 piperd syz-executor.4 85225 333512 34034 0 3 0x82 piperd syz-executor.3 31833 393910 34034 0 3 0x82 nanoslp syz-executor.2 29738 353082 34034 0 3 0x82 piperd syz-executor.0 34034 119273 70730 0 3 0x2000082 wait syz-fuzzer 34034 299540 70730 0 3 0x6000082 thrsleep syz-fuzzer 34034 273452 70730 0 3 0x6000082 thrsleep syz-fuzzer 34034 443281 70730 0 3 0x6000082 wait syz-fuzzer 34034 214039 70730 0 3 0x6000082 wait syz-fuzzer 34034 289205 70730 0 3 0x6000082 wait syz-fuzzer 34034 384235 70730 0 3 0x6000082 wait syz-fuzzer 34034 391657 70730 0 3 0x6000082 thrsleep syz-fuzzer 34034 396352 70730 0 3 0x6000082 thrsleep syz-fuzzer 34034 295537 70730 0 3 0x6000082 wait syz-fuzzer 34034 333587 70730 0 3 0x6000082 thrsleep syz-fuzzer 34034 487500 70730 0 3 0x6000082 kqread syz-fuzzer 34034 521650 70730 0 3 0x6000082 wait syz-fuzzer 34034 59038 70730 0 3 0x6000082 thrsleep syz-fuzzer 34034 85023 70730 0 3 0x6000082 thrsleep syz-fuzzer 34034 51284 70730 0 3 0x6000082 wait syz-fuzzer 70730 332221 30427 0 3 0x10008a sigsusp ksh 30427 272478 22694 0 3 0x9a kqread sshd 87793 198344 1 0 3 0x100083 ttyin getty 22694 291109 1 0 3 0x88 kqread sshd 18095 310076 93387 74 3 0x1100092 bpf pflogd 93387 299336 1 0 3 0x80 netio pflogd 37960 177694 69220 73 3 0x1100090 kqread syslogd 69220 90029 1 0 3 0x100082 netio syslogd 86595 24352 1 0 3 0x100080 kqread resolvd 8230 484929 340 77 3 0x100092 kqread dhcpleased 63020 338915 340 77 3 0x100092 kqread dhcpleased 340 127389 1 0 3 0x80 kqread dhcpleased 82313 343406 0 0 3 0x14200 bored smr 36760 270745 0 0 2 0x14200 zerothread 76302 342889 0 0 3 0x14200 aiodoned aiodoned 53639 384944 0 0 3 0x14200 syncer update 88191 13187 0 0 3 0x14200 cleaner cleaner 64556 467838 0 0 3 0x14200 reaper reaper 28565 7491 0 0 3 0x14200 pgdaemon pagedaemon 24155 521665 0 0 3 0x14200 bored viomb 14666 57769 0 0 3 0x40014200 acpi0 acpi0 90098 31138 0 0 3 0x40014200 idle1 90800 468828 0 0 3 0x14200 bored softnet3 89966 372600 0 0 3 0x14200 bored softnet2 43377 90384 0 0 3 0x14200 bored softnet1 24395 520068 0 0 3 0x14200 bored softnet0 92518 94612 0 0 3 0x14200 bored systqmp 72385 450553 0 0 3 0x14200 bored systq 82762 290404 0 0 3 0x14200 tmoslp softclockmp 87623 390293 0 0 3 0x40014200 tmoslp softclock 84827 259928 0 0 3 0x40014200 idle0 1 202729 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex &(curpg)->mdpage.pv_mtx r = 0 (0xfffffd8007fd8ff8) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 pmap_page_remove+0x48 sys/arch/amd64/amd64/pmap.c:1937 #4 uvm_anfree_list+0x98 #5 amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504 #6 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366 #7 sys_munmap+0x22e sys/uvm/uvm_mmap.c:539 #8 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 Process 6440 (syz-executor.2) thread 0xffff80002afca2c0 (144693) uvm_fault(0xfffffd8068165768, 0x400000003, 0, 1) -> e kernel: page fault trap, code=0 Faulted in DDB; continuing... ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10192 6475K 6733K 78643K 11625 0 pcb 13 10K 11K 78643K 46 0 rtable 237 7K 7K 78643K 444 0 pf 32 9K 10K 78643K 47 0 ifaddr 45 15K 15K 78643K 55 0 ifgroup 55 2K 2K 78643K 63 0 counters 60 35K 35K 78643K 64 0 ioctlops 0 0K 4K 78643K 1512 0 iov 0 0K 6K 78643K 446 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1286 80K 81K 78643K 1462 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 5K 78643K 17 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 12 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 13 45K 93K 78643K 718 0 sigio 0 0K 0K 78643K 13 0 proc 69 91K 115K 78643K 587 0 subproc 104 6K 6K 78643K 133 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 4 0K 0K 78643K 35 0 in_multi 99 7K 7K 78643K 133 0 ether_multi 1 0K 0K 78643K 7 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 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 509 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 341 138K 139K 78643K 9600 0 UVM aobj 35 2K 2K 78643K 35 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 40 0 NDP 12 0K 1K 78643K 34 0 temp 51 5918K 5988K 78643K 27918 0 kqueue 12 18K 22K 78643K 69 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 59 0 55 1 0 1 1 0 8 0 rtentry 112 136 0 26 4 0 4 4 0 8 0 unpcb 144 396 0 381 6 5 1 6 0 8 0 syncache 304 4 0 4 1 1 0 1 0 8 0 tcpqe 32 94 0 94 1 1 0 1 0 8 0 tcpcb 808 83 0 79 4 3 1 4 0 8 0 arp 120 22 0 4 1 0 1 1 0 8 0 inpcb 368 314 0 305 8 6 2 7 0 8 0 nd6 136 30 0 6 1 0 1 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 pffrag 232 9 0 5 1 0 1 1 0 482 0 pffrnode 88 9 0 5 1 0 1 1 0 8 0 pffrent 40 20 0 16 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 47 0 28 1 0 1 1 0 8 0 pfstkey 128 47 0 28 1 0 1 1 0 8 0 pfstate 376 47 0 28 3 0 3 3 0 8 1 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 256 540 0 88 29 0 29 29 0 8 0 art_table 32 541 0 88 4 0 4 4 0 8 0 art_node 16 132 0 32 1 0 1 1 0 8 0 sysvmsgpl 40 25 0 8 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 32 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2231 0 776 92 0 92 92 0 8 0 ffsino 272 2231 0 776 98 0 98 98 0 8 0 nchpl 144 3232 0 1581 63 0 63 63 0 8 0 uvmvnodes 80 2449 0 0 50 0 50 50 0 8 0 vnodes 216 2449 0 0 137 0 137 137 0 8 0 namei 1024 11079 0 11079 2 1 1 2 0 8 1 percpumem 16 45 0 2 1 0 1 1 0 8 0 vcpupl 2048 10 0 0 2 0 2 2 0 8 0 vmpool 696 10 0 0 1 0 1 1 0 8 0 kstatmem 264 28 0 4 2 0 2 2 0 8 0 scxspl 216 10719 0 10719 10 9 1 8 1 8 1 plimitpl 152 58 0 42 1 0 1 1 0 8 0 sigapl 424 1064 0 999 9 1 8 8 0 8 0 futexpl 64 5070 0 5068 1 0 1 1 0 8 0 knotepl 120 107 0 0 4 0 4 4 0 8 0 kqueuepl 216 138 0 128 5 0 5 5 0 8 4 pipepl 320 364 0 336 10 3 7 7 0 8 4 fdescpl 496 1025 0 999 5 1 4 5 0 8 0 filepl 152 4923 0 4678 25 7 18 19 0 8 8 lockfpl 104 109 0 107 1 0 1 1 0 8 0 lockfspl 48 50 0 48 1 0 1 1 0 8 0 sessionpl 144 26 0 9 1 0 1 1 0 8 0 pgrppl 48 37 0 20 1 0 1 1 0 8 0 ucredpl 104 444 0 431 1 0 1 1 0 8 0 zombiepl 144 999 0 999 1 0 1 1 0 8 1 processpl 1072 1064 0 999 5 0 5 5 0 8 0 procpl 680 2182 0 2096 9 0 9 9 0 8 0 sosppl 168 12 0 12 2 1 1 1 0 8 1 sockpl 488 769 0 741 23 19 4 21 0 8 0 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 12 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 249 0 0 32 0 32 32 0 8 0 mtagpl 96 20 0 0 1 0 1 1 0 8 0 mbufpl 256 280 0 0 18 0 18 18 0 8 0 bufpl 288 4923 0 147 342 0 342 342 0 8 0 anonpl 24 609807 0 596655 184 21 163 163 0 186 45 amapchunkpl 152 31449 0 30649 47 6 41 41 0 158 4 amappl16 200 27693 0 27211 173 132 41 61 0 8 8 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 217 0 201 2 0 2 2 0 8 0 amappl13 176 11 0 10 1 0 1 1 0 8 0 amappl12 168 1740 0 1711 4 2 2 3 0 8 0 amappl11 160 58 0 44 1 0 1 1 0 8 0 amappl10 152 28 0 19 2 1 1 1 0 8 0 amappl9 144 175 0 173 1 0 1 1 0 8 0 amappl8 136 258 0 191 3 0 3 3 0 8 0 amappl7 128 205 0 178 2 0 2 2 0 8 0 amappl6 120 307 0 295 1 0 1 1 0 8 0 amappl5 112 132 0 121 1 0 1 1 0 8 0 amappl4 104 489 0 464 2 1 1 2 0 8 0 amappl3 96 6052 0 5975 4 1 3 3 0 8 0 amappl2 88 1483 0 1408 3 1 2 3 0 8 0 amappl1 80 12230 0 11679 24 11 13 23 0 8 0 amappl 88 9017 0 8803 7 0 7 7 0 92 1 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 34 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1035 0 999 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1035 0 999 1 0 1 1 0 8 0 vmmpekpl 168 14112 0 14052 3 0 3 3 0 8 0 vmmpepl 168 106024 0 103767 156 20 136 137 0 357 19 vmsppl 464 1034 0 999 7 1 6 6 0 8 1 rwobjpl 56 51568 0 47511 66 0 66 66 0 8 2 pdppl 4096 2077 0 2008 156 77 79 83 0 8 10 pvpl 32 939376 0 920816 344 51 293 342 0 265 90 pmappl 248 1034 0 999 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 807 0 89 21 0 21 21 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(ffffffff82860106) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8068165768,20620000,20630000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_wire(fffffd8068165768,20620000,20631000,3) at uvm_fault_wire+0xd7 uvm_fault_unwire sys/uvm/uvm_fault.c:1623 [inline] uvm_fault_wire(fffffd8068165768,20620000,20631000,3) at uvm_fault_wire+0xd7 sys/uvm/uvm_fault.c:1605 uvm_vslock_device(ffff8000211a3a98,20620100,10000,3,ffff80002e4b3318) at uvm_vslock_device+0xe9 sys/uvm/uvm_glue.c:170 physio(ffffffff82057cf0,d00,8000,ffffffff82058370,ffff80002e4b35f8) at physio+0x22c sys/kern/kern_physio.c:140 spec_read(ffff80002e4b3450) at spec_read+0xfa sys/kern/spec_vnops.c:215 VOP_READ(fffffd80684c6538,ffff80002e4b35f8,0,fffffd807f7d7478) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 vn_read(fffffd807d6e9ef8,ffff80002e4b35f8,0) at vn_read+0x12a sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000211a3a98,3,ffff80002e4b35f8,0,ffff80002e4b36e0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:247 sys_read(ffff8000211a3a98,ffff80002e4b3690,ffff80002e4b36e0) at sys_read+0x87 sys/kern/sys_generic.c:167 syscall(ffff80002e4b3760) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4b3760) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa57e25ecc0, count: -13 ddb{0}> machine ddbcpu 1