panic: bad dir Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 299571 62986 0 0 0 1 syz-executor * 4703 62986 0 0 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff832e931c) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_lookup() at ufs_lookup+0x1eda VOP_LOOKUP(fffffd800b039438,ffff80003c42d560,ffff80003c42d590) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c42d530) at vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 namei(ffff80003c42d530) at namei+0x7ca sys/kern/vfs_lookup.c:250 domkdirat(ffff80003c44a038,ffffff9c,200000000340,180) at domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 syscall(ffff80003c42d710) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c42d710) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb2e39d3560, count: 6 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: bad dir ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff832e931c) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_lookup() at ufs_lookup+0x1eda VOP_LOOKUP(fffffd800b039438,ffff80003c42d560,ffff80003c42d590) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c42d530) at vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 namei(ffff80003c42d530) at namei+0x7ca sys/kern/vfs_lookup.c:250 domkdirat(ffff80003c44a038,ffffff9c,200000000340,180) at domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 syscall(ffff80003c42d710) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c42d710) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb2e39d3560, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c42d120 rbx 0xffffffff837ebddf cpu_info_full_primary+0x2ddf rdx 0xffff80000144dc00 rcx 0xffff80003c44a038 rax 0xffffffff837eaff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xbb8da790f514aa90 r11 0xaf2c740847730c06 r12 0xffffffff837ebbe0 cpu_info_full_primary+0x2be0 r13 0 r14 0 r15 0x1 rip 0xffffffff811f9fa5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c42d110 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=4703 pid=62986 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c44ba28,0xffffffff8398d410 process=0xffff800038c27aa0 user=0xffff80003c428000, vmspace=0xfffffd806b814020 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41571 426376 40032 0 2 0 syz-executor 62986 299571 11871 0 7 0 syz-executor *62986 4703 11871 0 7 0x4000000 syz-executor 57580 477990 81346 0 2 0 syz-executor 57580 425334 81346 0 2 0x4000000 syz-executor 509 401159 98213 0 2 0 syz-executor 509 258214 98213 0 3 0x4000080 fsleep syz-executor 509 155708 98213 0 3 0x4000080 fsleep syz-executor 84033 501148 22018 0 3 0x80 nanoslp syz-executor 84033 314168 22018 0 3 0x4000080 sbwait syz-executor 84033 278971 22018 0 3 0x4000080 fsleep syz-executor 59603 277550 483 0 2 0 syz-executor 59603 145556 483 0 3 0x4000080 msgwait syz-executor 59603 38851 483 0 3 0x4000080 fsleep syz-executor 74898 403588 1 0 3 0x80 nanoslp init 32848 46872 0 0 3 0x14200 bored sosplice 70991 299222 0 0 3 0x14200 acct acct 77494 55252 0 0 3 0x14280 nfsidl nfsio 32000 265686 0 0 3 0x14280 nfsidl nfsio 67992 132991 0 0 3 0x14280 nfsidl nfsio 33134 173202 0 0 3 0x14280 nfsidl nfsio 13009 164632 0 0 3 0x14280 nfsidl nfsio 58363 240294 0 0 3 0x14280 nfsidl nfsio 35459 111051 0 0 3 0x14280 nfsidl nfsio 13408 418223 0 0 3 0x14280 nfsidl nfsio 89860 290385 0 0 3 0x14280 nfsidl nfsio 52337 40962 0 0 3 0x14280 nfsidl nfsio 12258 279225 0 0 3 0x14280 nfsidl nfsio 80211 462074 0 0 3 0x14280 nfsidl nfsio 77336 266495 0 0 3 0x14280 nfsidl nfsio 28243 137577 0 0 3 0x14280 nfsidl nfsio 54061 334629 0 0 3 0x14280 nfsidl nfsio 88572 29625 0 0 3 0x14280 nfsidl nfsio 19006 487200 0 0 3 0x14280 nfsidl nfsio 8147 275480 0 0 3 0x14280 nfsidl nfsio 68490 196864 0 0 3 0x14280 nfsidl nfsio 25943 451308 0 0 3 0x14280 nfsidl nfsio 81346 234879 41562 0 3 0x82 nanoslp syz-executor 60350 387414 41562 0 3 0x82 nanoslp syz-executor 22018 475501 41562 0 3 0x82 nanoslp syz-executor 39230 177519 41562 0 3 0x82 piperd syz-executor 483 89346 41562 0 3 0x82 nanoslp syz-executor 40032 185000 41562 0 3 0x82 nanoslp syz-executor 98213 83642 41562 0 3 0x82 nanoslp syz-executor 11871 49597 41562 0 3 0x82 nanoslp syz-executor 41562 179692 12262 0 2 0x2 syz-executor 12262 377549 54181 0 3 0x10008a sigsusp ksh 54181 210253 65955 0 3 0x98 kqread sshd-session 65955 210332 31722 0 3 0x92 kqread sshd-session 31722 205810 1 0 3 0x88 kqread sshd 28038 69555 15206 74 3 0x1100092 bpf pflogd 15206 237399 1 0 3 0x80 sbwait pflogd 67839 423817 90323 73 3 0x1100090 kqread syslogd 90323 329966 1 0 3 0x100082 sbwait syslogd 26546 55864 1 0 3 0x100080 kqread resolvd 63768 69412 5497 77 3 0x100092 kqread dhcpleased 21153 151820 5497 77 3 0x100092 kqread dhcpleased 5497 450267 1 0 3 0x80 kqread dhcpleased 99689 351257 0 0 2 0x40014200 smr 4577 252651 0 0 2 0x14200 zerothread 11071 219037 0 0 3 0x14200 aiodoned aiodoned 91699 73338 0 0 3 0x14200 syncer update 49893 83289 0 0 3 0x14200 cleaner cleaner 58302 475207 0 0 3 0x14200 reaper reaper 96586 157425 0 0 3 0x14200 pgdaemon pagedaemon 99019 11471 0 0 3 0x14200 bored viomb 50732 434957 0 0 3 0x40014200 acpi0 acpi0 55274 141301 0 0 3 0x40014200 idle1 85580 383266 0 0 3 0x14200 bored softnet7 96508 147303 0 0 3 0x14200 bored softnet6 28673 58358 0 0 3 0x14200 bored softnet5 10562 59655 0 0 3 0x14200 bored softnet4 24310 371647 0 0 3 0x14200 bored softnet3 18839 516772 0 0 3 0x14200 bored softnet2 83400 259986 0 0 3 0x14200 bored softnet1 79805 306779 0 0 3 0x14200 bored softnet0 42889 451973 0 0 3 0x14200 bored systqmp 63156 135480 0 0 3 0x14200 bored systq 72140 254576 0 0 3 0x14200 tmoslp softclockmp 4752 145381 0 0 3 0x40014200 tmoslp softclock 40086 448769 0 0 3 0x40014200 idle0 1 179226 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 62986 (syz-executor) thread 0xffff80003c44a038 (4703) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838b02b0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2d8 sys/kern/kern_synch.c:367 #3 biowait+0xc6 sys/kern/vfs_bio.c:1242 #4 ffs_bufatoff+0x16f sys/ufs/ffs/ffs_subr.c:71 #5 ufs_lookup+0x58e sys/ufs/ufs/ufs_lookup.c:256 #6 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #7 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #8 namei+0x7ca sys/kern/vfs_lookup.c:250 #9 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807e4bae80) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 57580 (syz-executor) thread 0xffff80003c44a2d0 (425334) exclusive rrwlock inode r = 0 (0xfffffd806e18c230) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10207 11025K 11303K 166960K 11933 0 pcb 17 14K 22K 166960K 158 0 rtable 196 8K 8K 166960K 327 0 pf 38 18K 24K 166960K 108 0 ifaddr 44 7K 8K 166960K 68 0 ifgroup 57 2K 2K 166960K 99 0 sysctl 3 1K 9K 166960K 14 0 counters 70 37K 38K 166960K 130 0 ioctlops 0 0K 4K 166960K 1561 0 iov 0 0K 16K 166960K 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1434 90K 90K 166960K 1904 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 22 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 593 0 sigio 0 0K 0K 166960K 9 0 proc 66 115K 147K 166960K 608 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 56 0 in_multi 99 7K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 3 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 406 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 232 147K 159K 166960K 7046 0 UVM aobj 16 2K 2K 166960K 17 0 pinsyscall 41 82K 102K 166960K 1676 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 35 0 NDP 13 0K 2K 166960K 47 0 temp 58 8647K 8711K 166960K 26959 0 kqueue 15 24K 30K 166960K 109 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 104 0 101 2 0 2 2 0 8 1 rtentry 176 97 0 15 5 0 5 5 0 8 0 unpcb 144 536 0 518 6 0 6 6 0 8 5 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 100 0 96 1 0 1 1 0 8 0 arp 128 10 0 0 1 0 1 1 0 8 0 inpcb 328 602 0 589 7 1 6 7 0 8 4 nd6 144 16 0 0 1 0 1 1 0 8 0 pkpcb 40 12 0 12 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 29 0 28 1 0 1 1 0 8 0 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 4 0 1 1 0 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 39 0 1 1 0 1 1 0 8 0 pfstkey 128 41 0 3 2 0 2 2 0 8 0 pfstate 384 39 0 2 4 0 4 4 0 8 0 pfrule 1344 24 0 19 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 466 0 65 30 1 29 30 0 8 1 art_table 40 468 0 65 5 0 5 5 0 8 0 art_node 32 97 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 14 0 1 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2494 0 984 96 0 96 96 0 8 0 ffsino 296 2494 0 984 118 0 118 118 0 8 0 nchpl 144 3301 0 1604 64 0 64 64 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 uvmvnodes 80 2912 0 0 60 0 60 60 0 8 0 vnodes 216 2912 0 0 162 0 162 162 0 8 0 namei 1024 11612 0 11611 2 1 1 2 0 8 0 percpumem 16 80 0 30 1 0 1 1 0 8 0 kstatmem 264 64 0 36 3 0 3 3 0 8 1 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 13884 0 13884 8 2 6 6 1 8 6 plimitpl 152 215 0 198 1 0 1 1 0 8 0 sigapl 424 919 0 844 9 0 9 9 0 8 0 knotepl 120 307 0 0 10 0 10 10 0 8 0 kqueuepl 224 176 0 165 2 0 2 2 0 8 0 pipepl 344 196 0 169 6 1 5 6 0 8 2 fdescpl 528 875 0 844 3 0 3 3 0 8 0 filepl 160 5536 0 5313 16 1 15 16 0 8 5 lockfpl 104 328 0 325 2 0 2 2 0 8 1 lockfspl 48 86 0 83 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 40 0 24 1 0 1 1 0 8 0 ucredpl 104 705 0 692 1 0 1 1 0 8 0 zombiepl 144 845 0 844 1 0 1 1 0 8 0 processpl 1248 919 0 844 6 0 6 6 0 8 0 procpl 664 1746 0 1663 8 0 8 8 0 8 0 sosppl 168 2 0 1 1 0 1 1 0 8 0 sockpl 752 1299 0 1264 17 6 11 17 0 8 6 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 0 mcl2k 2048 47 0 0 6 0 6 6 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 210 0 0 14 0 14 14 0 8 0 bufpl 280 5113 0 121 357 0 357 357 0 8 0 anonpl 32 10745 0 0 87 0 87 87 0 246 0 amapchunkpl 152 22314 0 21808 29 4 25 26 0 158 3 amappl16 200 2788 0 2759 28 16 12 23 0 8 8 amappl15 192 13 0 13 1 1 0 1 0 8 0 amappl14 184 110 0 99 1 0 1 1 0 8 0 amappl13 176 4 0 3 1 0 1 1 0 8 0 amappl12 168 1517 0 1487 3 1 2 2 0 8 0 amappl11 160 48 0 34 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 37 0 35 1 0 1 1 0 8 0 amappl7 128 111 0 100 1 0 1 1 0 8 0 amappl6 120 176 0 173 1 0 1 1 0 8 0 amappl5 112 120 0 109 1 0 1 1 0 8 0 amappl4 104 293 0 273 1 0 1 1 0 8 0 amappl3 96 4380 0 4270 5 1 4 4 0 8 0 amappl2 88 637 0 577 2 0 2 2 0 8 0 amappl1 80 9958 0 9381 14 1 13 14 0 8 0 amappl 88 6296 0 6130 5 0 5 5 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 dma512 512 1 0 1 1 0 1 1 0 8 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 16 0 1 1 0 1 1 0 8 0 uaddrrnd 24 875 0 844 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 875 0 844 1 0 1 1 0 8 0 vmmpekpl 168 8746 0 8709 3 1 2 3 0 8 0 vmmpepl 168 60688 0 58752 105 0 105 105 0 357 13 vmsppl 488 874 0 844 5 1 4 5 0 8 0 rwobjpl 80 20898 0 17080 79 0 79 79 0 8 0 pdppl 4096 1758 0 1688 96 24 72 84 0 8 2 pvpl 32 19228 0 0 156 0 156 156 0 265 0 pmappl 256 874 0 844 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 275 0 29 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff832e931c) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_lookup() at ufs_lookup+0x1eda VOP_LOOKUP(fffffd800b039438,ffff80003c42d560,ffff80003c42d590) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c42d530) at vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 namei(ffff80003c42d530) at namei+0x7ca sys/kern/vfs_lookup.c:250 domkdirat(ffff80003c44a038,ffffff9c,200000000340,180) at domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 syscall(ffff80003c42d710) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c42d710) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb2e39d3560, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x753fc486e430, count: 12 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x753fc486e430, count: -3