䠛18xNqQ"Q,@6 ]ƨ#'Y*k*pS7ȄvB}X\؊x򱟀ɭ6|&ӫQK.2/5"z 0ݶ .#B /%9z% '+\xP#-?}#[Hwv]!b ppanic: kernel diagnostic assertion "len >= 0 && !M_READONLY(m)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/uipc_mbuf.c", line 1384 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *144524 31104 0 0 0x4000000 0K syz-executor.7 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825760e8) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ea380,ffffffff8255d87a,568,ffffffff8258bfdc) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd80768cb900,ffffffde) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff800022c5ec10,ffff800000bddc00,ffff800022c5e978,ffff800022c5e878) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(41700,ffff800022c5ec10,1) at bpfwrite+0x169 sys/net/bpf.c:644 spec_write(ffff800022c5ea70) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806a0c5780,ffff800022c5ec10,1,fffffd807f7d8360) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8076d88d30,ffff800022c5ec10,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002119ea80,3,ffff800022c5ec10,1,ffff800022c5ed10) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff80002119ea80,ffff800022c5ecb8,ffff800022c5ed10) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff80002119ea80,ffff800022c5ecb8,ffff800022c5ed10) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff800022c5ed80) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022c5ed80) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x151a5dc69a0, 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 "len >= 0 && !M_READONLY(m)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/uipc_mbuf.c", line 1384 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825760e8) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ea380,ffffffff8255d87a,568,ffffffff8258bfdc) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd80768cb900,ffffffde) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff800022c5ec10,ffff800000bddc00,ffff800022c5e978,ffff800022c5e878) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(41700,ffff800022c5ec10,1) at bpfwrite+0x169 sys/net/bpf.c:644 spec_write(ffff800022c5ea70) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806a0c5780,ffff800022c5ec10,1,fffffd807f7d8360) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8076d88d30,ffff800022c5ec10,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002119ea80,3,ffff800022c5ec10,1,ffff800022c5ed10) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff80002119ea80,ffff800022c5ecb8,ffff800022c5ed10) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff80002119ea80,ffff800022c5ecb8,ffff800022c5ed10) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff800022c5ed80) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022c5ed80) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x151a5dc69a0, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800022c5e690 rbx 0xffffffff82902bff cpu_info_full_primary+0x2bff rdx 0xffff800000c06080 rcx 0 rax 0xffff80002119ea80 r8 0 r9 0x8080808080808080 r10 0x256b2c36cbc719af r11 0xe713987c1917bc0e r12 0xffffffff82902a00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff81e72788 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022c5e680 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.7) pid=144524 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80002119ed20,0xffffffff82b3ce40 process=0xffff8000fffecc98 user=0xffff800022c59000, vmspace=0xfffffd8064ab52f0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 30950 7093 51721 0 2 0 syz-executor.6 30950 7413 51721 0 3 0x4000080 fsleep syz-executor.6 77951 359337 25876 0 2 0 syz-executor.4 77951 512207 25876 0 3 0x4000080 fsleep syz-executor.4 31104 158312 33384 0 2 0 syz-executor.7 *31104 144524 33384 0 7 0x4000000 syz-executor.7 72964 138866 81449 0 2 0 syz-executor.1 72964 99704 81449 0 3 0x4000080 fsleep syz-executor.1 6377 410553 63020 0 2 0 syz-executor.5 6377 173515 63020 0 2 0x4000000 syz-executor.5 25876 247947 78438 0 3 0x82 nanoslp syz-executor.4 63020 378081 78438 0 2 0x482 syz-executor.5 31442 442760 78438 0 2 0x482 syz-executor.3 81449 246491 78438 0 2 0x2 syz-executor.1 51721 297100 78438 0 3 0x82 nanoslp syz-executor.6 58436 2989 78438 0 2 0x482 syz-executor.0 75292 116790 78438 0 3 0x82 nanoslp syz-executor.2 6922 109403 0 0 3 0x14200 acct acct 60540 319521 1 0 3 0x100083 ttyopn getty 93077 147402 0 0 3 0x14200 bored sosplice 33384 431948 78438 0 3 0x82 nanoslp syz-executor.7 78438 18904 11037 0 3 0x82 thrsleep syz-fuzzer 78438 366361 11037 0 3 0x4000082 thrsleep syz-fuzzer 78438 195890 11037 0 3 0x4000082 thrsleep syz-fuzzer 78438 61128 11037 0 3 0x4000082 kqread syz-fuzzer 78438 265131 11037 0 3 0x4000082 thrsleep syz-fuzzer 78438 502442 11037 0 3 0x4000082 thrsleep syz-fuzzer 78438 182966 11037 0 3 0x4000082 thrsleep syz-fuzzer 78438 211570 11037 0 3 0x4000082 thrsleep syz-fuzzer 78438 349467 11037 0 3 0x4000082 thrsleep syz-fuzzer 11037 171957 83944 0 3 0x10008a sigsusp ksh 83944 390922 57732 0 3 0x9a kqread sshd 57732 83930 1 0 3 0x88 kqread sshd 74260 42559 22263 74 3 0x100092 bpf pflogd 22263 504189 1 0 3 0x80 netio pflogd 72366 330485 14601 73 3 0x100090 kqread syslogd 14601 372233 1 0 3 0x100082 netio syslogd 73947 254347 1 0 3 0x100080 kqread resolvd 11003 327547 5999 77 3 0x100092 kqread dhcpleased 17169 247585 5999 77 3 0x100092 kqread dhcpleased 5999 359702 1 0 3 0x80 kqread dhcpleased 77432 119870 0 0 3 0x14200 bored smr 99728 456141 0 0 2 0x14200 zerothread 52722 128873 0 0 3 0x14200 aiodoned aiodoned 64986 154189 0 0 3 0x14200 syncer update 40843 39016 0 0 3 0x14200 cleaner cleaner 33303 328591 0 0 3 0x14200 reaper reaper 3170 501845 0 0 3 0x14200 pgdaemon pagedaemon 41390 347106 0 0 3 0x14200 bored viomb 57254 168004 0 0 3 0x40014200 acpi0 acpi0 67789 391462 0 0 7 0x40014200 idle1 91234 173162 0 0 3 0x14200 bored softnet 74104 388186 0 0 3 0x14200 bored systqmp 20503 311547 0 0 3 0x14200 bored systq 14225 124169 0 0 3 0x40014200 bored softclock 40753 388688 0 0 3 0x40014200 idle0 1 425007 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 31104 (syz-executor.7) thread 0xffff80002119ea80 (144524) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b5bf28) #0 witness_lock+0x44d #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x19c sys/kern/sys_generic.c:381 #3 sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] #3 sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 #4 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10325 6715K 10741K 78643K 26038 0 pcb 13 16K 18K 78643K 1187 0 rtable 237 16K 16K 78643K 1602 0 ifaddr 105 21K 22K 78643K 517 0 sysctl 2 0K 0K 78643K 2 0 counters 58 35K 36K 78643K 200 0 ioctlops 0 0K 4K 78643K 3266 0 iov 0 0K 16K 78643K 854 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1462 91K 92K 78643K 5742 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 81 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 17 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 89K 78643K 8530 0 sigio 1 0K 0K 78643K 346 0 proc 70 87K 124K 78643K 1489 0 subproc 104 6K 6K 78643K 429 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1035 0 in_multi 99 6K 7K 78643K 605 0 ether_multi 1 0K 0K 78643K 64 0 mrt 1 0K 0K 78643K 26 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 349 1553K 1553K 78643K 349 0 exec 0 0K 2K 78643K 2036 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 7 26K 26K 78643K 7 0 UVM amap 434 438K 438K 78643K 109253 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 352 0 NDP 16 0K 2K 78643K 161 0 temp 147 4704K 4780K 78643K 106977 0 kqueue 13 18K 24K 78643K 485 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 120 615 0 612 7 6 1 3 0 8 0 rtentry 112 488 0 385 4 0 4 4 0 8 0 unpcb 136 6039 0 6024 60 59 1 9 0 8 0 syncache 296 37 0 37 13 13 0 1 0 8 0 tcpqe 32 11 0 11 6 6 0 1 0 8 0 tcpcb 736 3339 0 3333 107 106 1 16 0 8 0 arp 120 80 0 61 1 0 1 1 0 8 0 inpcb 304 8666 0 8658 93 92 1 12 0 8 0 rttmr 72 6 0 6 2 2 0 1 0 8 0 nd6 48 111 0 87 1 0 1 1 0 8 0 pkpcb 40 161 0 161 6 6 0 2 0 8 0 kcovpl 48 33 0 25 1 0 1 1 0 8 0 ppxss 1248 20 0 20 3 3 0 1 0 8 0 pffrag 232 33 0 30 1 0 1 1 0 482 0 pffrnode 88 33 0 30 1 0 1 1 0 8 0 pffrent 40 93 0 90 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 pfrktable 1344 12 0 12 1 1 0 1 0 8 0 pfstitem 24 235 0 211 1 0 1 1 0 8 0 pfstkey 112 235 0 211 2 0 2 2 0 8 0 pfstate 320 235 0 211 6 2 4 4 0 8 0 pfrule 1360 24 0 19 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2071 0 1636 42 14 28 31 0 8 0 art_table 32 2072 0 1636 4 0 4 4 0 8 0 art_node 16 484 0 392 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 0 1 0 1 1 0 8 0 semupl 112 7 0 7 2 2 0 1 0 8 0 semapl 112 11 0 2 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12134 0 10675 92 0 92 92 0 8 0 ffsino 272 12134 0 10675 98 0 98 98 0 8 0 nchpl 144 23115 0 21485 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 90773 0 90773 2 1 1 2 0 8 1 percpumem 16 112 0 71 1 0 1 1 0 8 0 vcpupl 2048 58 0 0 8 0 8 8 0 8 0 vmpool 560 74 0 16 5 0 5 5 0 8 0 pfiaddrpl 120 3 0 3 1 1 0 1 0 8 0 scsiplug 72 9 0 9 3 3 0 1 0 8 0 scxspl 216 66469 0 66469 30 29 1 8 0 8 1 plimitpl 152 1049 0 1034 1 0 1 1 0 8 0 sigapl 424 8815 0 8771 8 1 7 8 0 8 0 futexpl 64 79263 0 79260 1 0 1 1 0 8 0 knotepl 120 522 0 0 11 1 10 10 0 8 0 kqueuepl 216 1728 0 1719 30 29 1 8 0 8 0 pipepl 336 2061 0 2033 59 53 6 11 0 8 3 fdescpl 496 8779 0 8751 6 2 4 5 0 8 0 filepl 152 65743 0 65498 95 79 16 24 0 8 5 lockfpl 104 2205 0 2203 5 4 1 2 0 8 0 lockfspl 48 649 0 647 1 0 1 1 0 8 0 sessionpl 144 50 0 33 1 0 1 1 0 8 0 pgrppl 48 137 0 120 1 0 1 1 0 8 0 ucredpl 96 6129 0 6117 1 0 1 1 0 8 0 zombiepl 144 8771 0 8768 1 0 1 1 0 8 0 processpl 1064 8815 0 8768 5 0 5 5 0 8 0 procpl 672 24556 0 24496 17 11 6 9 0 8 0 srpgc 96 28 0 28 5 5 0 1 0 8 0 sosppl 168 34 0 34 9 9 0 1 0 8 0 sockpl 480 15484 0 15456 363 358 5 34 0 8 1 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 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 18 0 0 3 0 3 3 0 8 0 mcl4k 4096 33 0 0 3 0 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 283 0 0 20 2 18 20 0 8 0 mtagpl 96 490 0 0 9 0 9 9 0 8 0 mbufpl 256 987 0 0 49 0 49 49 0 8 0 bufpl 288 16814 0 10478 453 0 453 453 0 8 0 anonpl 24 2435660 0 2415584 227 97 130 151 0 186 0 amapchunkpl 152 277107 0 276254 107 63 44 50 0 158 7 amappl16 200 23113 0 22436 115 78 37 48 0 8 0 amappl15 192 1023 0 1017 1 0 1 1 0 8 0 amappl14 184 1571 0 1566 1 0 1 1 0 8 0 amappl13 176 1922 0 1917 1 0 1 1 0 8 0 amappl12 168 1316 0 1310 1 0 1 1 0 8 0 amappl11 160 1568 0 1550 1 0 1 1 0 8 0 amappl10 152 314 0 305 1 0 1 1 0 8 0 amappl9 144 1680 0 1677 1 0 1 1 0 8 0 amappl8 136 1922 0 1813 4 0 4 4 0 8 0 amappl7 128 908 0 892 1 0 1 1 0 8 0 amappl6 120 1497 0 1468 2 1 1 2 0 8 0 amappl5 112 5463 0 5447 1 0 1 1 0 8 0 amappl4 104 4397 0 4365 2 1 1 2 0 8 0 amappl3 96 3021 0 3002 1 0 1 1 0 8 0 amappl2 88 3956 0 3897 3 1 2 3 0 8 0 amappl1 80 161831 0 161261 22 9 13 19 0 8 0 amappl 88 108165 0 107892 10 2 8 8 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 8853 0 8767 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8853 0 8767 1 0 1 1 0 8 0 vmmpekpl 168 72028 0 71950 4 0 4 4 0 8 0 vmmpepl 168 804237 0 801494 263 131 132 155 0 357 0 vmsppl 368 8852 0 8767 10 1 9 9 0 8 0 rwobjpl 56 199187 0 191394 118 6 112 114 0 8 0 pdppl 4096 17713 0 17592 390 263 127 127 0 8 6 pvpl 32 4076758 0 4052289 400 192 208 263 0 265 0 pmappl 248 8852 0 8767 7 1 6 6 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1351 0 443 28 2 26 27 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825760e8) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ea380,ffffffff8255d87a,568,ffffffff8258bfdc) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd80768cb900,ffffffde) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff800022c5ec10,ffff800000bddc00,ffff800022c5e978,ffff800022c5e878) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(41700,ffff800022c5ec10,1) at bpfwrite+0x169 sys/net/bpf.c:644 spec_write(ffff800022c5ea70) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806a0c5780,ffff800022c5ec10,1,fffffd807f7d8360) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8076d88d30,ffff800022c5ec10,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002119ea80,3,ffff800022c5ec10,1,ffff800022c5ed10) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff80002119ea80,ffff800022c5ecb8,ffff800022c5ed10) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff80002119ea80,ffff800022c5ecb8,ffff800022c5ed10) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff800022c5ed80) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022c5ed80) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x151a5dc69a0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a 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+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a 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+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5