uvm_fault(0xfffff0006023a7c8, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff8304eff8 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80002a38c220 gsbase 0xffff80002999dff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff8304eff8 Starting stack trace... panic(ffffffff834ed16b) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a38c170) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff800045fe82b8,fffff00061c2b2a8,ffff80002a38c350) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimes(ffff800045fe82b8,ffff80002a38c4a0,ffff80002a38c3f0) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2733 syscall(ffff80002a38c4a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a38c4a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6308f6de540, count: 250 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 83 -802522864 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *417385 19472 0 0 0 1 syz-executor 289407 4432 0 0 0 0 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0x766ddf775230, count: 14 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffff0006023a7c8, 0x98, 0, 1) -> e ddb{1}> show kasan No such command ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x766ddf775230, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a386790 rbx 0 rdx 0 rcx 0xffff80002a329cc0 rax 0x3b r8 0xffff80002a3866c0 r9 0x1 r10 0x1d18677d5c5a9b72 r11 0x5a302cd95f2973ad r12 0 r13 0 r14 0xffff80002a329cc0 r15 0 rip 0xffffffff819123ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80002a386710 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=417385 pid=19472 tcnt=2 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a328d30,0xffff800045fe82c8 process=0xffff800045fe0e98 user=0xffff80002a381000, vmspace=0xfffff0006023a7c8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *19472 417385 63583 0 7 0 0 syz-executor 19472 422878 63583 0 3 0 0x4000000 sbar syz-executor 4432 289407 20971 0 7 0 0 syz-executor 4432 113241 20971 0 2 0 0x4000000 syz-executor 4432 181331 20971 0 2 0 0x4000000 syz-executor 99238 243915 23792 0 2 0 0 syz-executor 99238 264276 23792 0 3 0 0x4000000 biowait syz-executor 24857 176046 69335 0 2 0 0 syz-executor 24857 32894 69335 0 3 0 0x4000080 fsleep syz-executor 72345 135559 87220 0 2 0 0 syz-executor 72345 258109 87220 0 3 0 0x4000080 kqread syz-executor 72345 453811 87220 0 2 0 0x4000000 syz-executor 57984 421252 96067 0 2 0 0 syz-executor 57984 499924 96067 0 3 0 0x4000080 fsleep syz-executor 54236 515157 84252 -1 3 0x10 0x80 nanoslp syz-executor 54236 67303 84252 -1 3 0x10 0x4000080 ttyout syz-executor 54236 430184 84252 -1 3 0x10 0x4000080 fsleep syz-executor 69335 70240 6244 0 3 0x2 0x80 nanoslp syz-executor 78504 444298 0 0 3 0x14000 0x280 nfsidl nfsio 88645 411629 0 0 3 0x14000 0x280 nfsidl nfsio 18307 148388 0 0 3 0x14000 0x280 nfsidl nfsio 41992 486996 0 0 3 0x14000 0x280 nfsidl nfsio 40084 425980 0 0 3 0x14000 0x280 nfsidl nfsio 89367 112546 0 0 3 0x14000 0x280 nfsidl nfsio 40439 199964 0 0 3 0x14000 0x280 nfsidl nfsio 83088 139049 0 0 3 0x14000 0x280 nfsidl nfsio 91961 464728 0 0 3 0x14000 0x280 nfsidl nfsio 40655 101757 0 0 3 0x14000 0x280 nfsidl nfsio 82719 514586 0 0 3 0x14000 0x280 nfsidl nfsio 30415 454391 0 0 3 0x14000 0x280 nfsidl nfsio 99892 416197 0 0 3 0x14000 0x280 nfsidl nfsio 28960 386612 0 0 3 0x14000 0x280 nfsidl nfsio 87903 354598 0 0 3 0x14000 0x280 nfsidl nfsio 48391 274053 0 0 3 0x14000 0x280 nfsidl nfsio 29067 193586 0 0 3 0x14000 0x280 nfsidl nfsio 60700 156593 0 0 3 0x14000 0x280 nfsidl nfsio 93872 95739 0 0 3 0x14000 0x280 nfsidl nfsio 8623 235884 0 0 3 0x14000 0x280 nfsidl nfsio 96067 349816 6244 0 3 0x2 0x80 nanoslp syz-executor 87220 493416 6244 0 3 0x2 0x80 nanoslp syz-executor 63583 223574 6244 0 3 0x2 0x80 nanoslp syz-executor 15285 154301 6244 0 3 0x2 0x80 wait syz-executor 84252 70487 6244 0 3 0x2 0x80 nanoslp syz-executor 23792 351780 6244 0 3 0x2 0x80 nanoslp syz-executor 20971 506422 6244 0 3 0x2 0x80 nanoslp syz-executor 6244 248 78789 0 3 0x2 0x80 kqread syz-executor 78789 148903 42177 0 3 0x100002 0x88 sigsusp ksh 42177 153150 56493 0 3 0x10 0x88 kqread sshd-session 56493 288300 63288 0 3 0x12 0x80 kqread sshd-session 18360 123780 1 0 3 0x100003 0x80 ttyin getty 63288 522373 1 0 3 0 0x88 kqread sshd 40334 387685 69127 74 3 0x1100012 0x80 bpf pflogd 69127 172089 1 0 3 0 0x80 sbwait pflogd 19189 392672 84164 73 3 0x1100010 0x80 kqread syslogd 84164 213377 1 0 3 0x100002 0x80 sbwait syslogd 98334 46638 1 0 3 0x100000 0x80 kqread resolvd 72808 254314 90016 77 3 0x100012 0x80 kqread dhcpleased 3192 186499 90016 77 3 0x100012 0x80 kqread dhcpleased 90016 262943 1 0 3 0 0x80 kqread dhcpleased 45481 213817 0 0 2 0x14000 0x40000200 smr 88260 125558 0 0 2 0x14000 0x200 zerothread 8051 427596 0 0 3 0x14000 0x200 aiodoned aiodoned 80857 305455 0 0 3 0x14000 0x200 syncer update 70778 72566 0 0 3 0x14000 0x200 cleaner cleaner 87718 479556 0 0 3 0x14000 0x200 reaper reaper 40319 212684 0 0 3 0x14000 0x200 pgdaemon pagedaemon 80379 244324 0 0 3 0x14000 0x200 bored viomb 2166 486799 0 0 3 0x14000 0x40000200 acpi0 acpi0 63669 425926 0 0 3 0x14000 0x40000200 idle1 44066 305895 0 0 3 0x14000 0x200 bored softnet1 66625 146654 0 0 3 0x14000 0x200 netlock softnet0 65092 69918 0 0 2 0x14000 0x40000200 systqmp 24770 174018 0 0 3 0x14000 0x200 bored systq 73619 325509 0 0 3 0x14000 0x200 tmoslp softclockmp 27161 395097 0 0 3 0x14000 0x40000200 tmoslp softclock 50794 256635 0 0 3 0x14000 0x40000200 idle0 1 173887 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks Process 19472 (syz-executor) thread 0xffff800045fe82b8 (422878) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a114c0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 Process 99238 (syz-executor) thread 0xffff80002a3282d0 (264276) exclusive rrwlock inode r = 0 (0xfffff0006b92f8e0) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vn_write+0x18f sys/kern/vfs_vnops.c:411 #6 dofilewritev+0x2bd sys/kern/sys_generic.c:384 #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:783 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11071 12160K 12362K 166960K 12488 0 pcb 17 16K 18K 166960K 239 0 rtable 238 7K 9K 166960K 509 0 pf 39 18K 37K 166960K 160 0 ifaddr 45 8K 8K 166960K 68 0 ifgroup 60 2K 2K 166960K 94 0 sysctl 4 1K 9K 166960K 10 0 counters 72 37K 37K 166960K 94 0 ioctlops 0 0K 4K 166960K 1606 0 iov 0 0K 28K 166960K 19 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1322 83K 83K 166960K 1796 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 77 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 18 65K 93K 166960K 536 0 sigio 0 0K 0K 166960K 4 0 proc 72 115K 164K 166960K 642 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 103 0 in_multi 102 6K 6K 166960K 135 0 ether_multi 1 0K 0K 166960K 3 0 mrt 0 0K 0K 166960K 18 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 540 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 246 151K 165K 166960K 6702 0 UVM aobj 21 2K 2K 166960K 25 0 pinsyscall 43 86K 104K 166960K 1774 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 12 0 NDP 15 0K 2K 166960K 43 0 temp 77 9128K 9178K 166960K 25356 0 kqueue 17 24K 33K 166960K 108 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 66 0 62 1 0 1 1 0 8 0 rtentry 176 153 0 48 6 0 6 6 0 8 0 unpcb 144 359 0 340 2 0 2 2 0 8 1 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpcb 736 81 0 75 1 0 1 1 0 8 0 arp 136 24 0 6 1 0 1 1 0 8 0 inpcb 328 580 0 540 9 0 9 9 0 8 5 nd6 152 34 0 7 2 0 2 2 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1192 6 0 5 1 0 1 1 0 8 0 pfstscr 40 3 0 0 1 0 1 1 0 8 0 pffrag 232 6 0 2 1 0 1 1 0 482 0 pffrnode 88 6 0 2 1 0 1 1 0 8 0 pffrent 40 12 0 7 1 0 1 1 0 8 0 pfosfp 40 1462 0 1461 5 0 5 5 0 8 4 pfosfpen 112 1462 0 1461 21 0 21 21 0 8 20 pfrktable 1344 9 0 9 1 0 1 1 0 8 1 pfsrclim 320 2 0 2 1 1 0 1 0 8 0 pfstlim 224 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 12 0 7 1 0 1 1 0 8 0 pftag 88 4 0 3 1 0 1 1 0 8 0 pfstitem 24 56 0 1 1 0 1 1 0 8 0 pfstkey 128 56 0 1 2 0 2 2 0 8 0 pfstate 448 54 0 1 6 0 6 6 0 8 0 pfrule 1360 28 0 23 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 668 0 211 32 0 32 32 0 8 1 art_table 40 670 0 211 6 0 6 6 0 8 0 art_node 32 152 0 58 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 0 1 1 0 8 1 semapl 72 71 0 61 1 0 1 1 0 8 0 shmpl 112 22 0 4 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2310 0 842 93 0 93 93 0 8 0 ffsino 296 2310 0 842 114 0 114 114 0 8 0 nchpl 144 3028 0 1318 64 0 64 64 0 8 0 vnodes 216 2654 0 0 148 0 148 148 0 8 0 namei 1024 10057 0 10057 2 1 1 2 0 8 1 percpumem 16 63 0 11 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 0 1 1 0 8 1 kstatmem 264 49 0 20 3 0 3 3 0 8 1 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 10789 0 10788 4 3 1 3 1 8 0 plimitpl 152 201 0 182 1 0 1 1 0 8 0 sigapl 424 878 0 810 8 0 8 8 0 8 0 knotepl 120 315 0 0 10 0 10 10 0 8 0 kqueuepl 224 188 0 176 5 2 3 5 0 8 2 pipepl 344 164 0 137 3 0 3 3 0 8 0 fdescpl 528 842 0 810 3 0 3 3 0 8 0 filepl 160 4618 0 4358 17 1 16 17 0 8 4 lockfpl 104 188 0 186 1 0 1 1 0 8 0 lockfspl 48 72 0 70 1 0 1 1 0 8 0 sessionpl 144 142 0 133 1 0 1 1 0 8 0 pgrppl 48 154 0 137 1 0 1 1 0 8 0 ucredpl 104 782 0 766 1 0 1 1 0 8 0 zombiepl 144 811 0 810 1 0 1 1 0 8 0 processpl 1232 878 0 810 6 0 6 6 0 8 0 procpl 664 1523 0 1445 8 0 8 8 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 752 1025 0 962 13 0 13 13 0 8 6 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 129 0 0 17 0 17 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 16 0 0 2 0 2 2 0 8 0 mextrefs 64 16 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 177 0 0 11 0 11 11 0 8 0 bufpl 272 3085 0 112 199 0 199 199 0 8 0 anonpl 32 7611 0 0 62 0 62 62 0 247 0 amapchunkpl 152 20839 0 20304 26 0 26 26 0 158 3 amappl16 200 3129 0 3092 17 3 14 14 0 8 7 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 497 0 496 1 0 1 1 0 8 0 amappl13 176 143 0 130 1 0 1 1 0 8 0 amappl12 168 1106 0 1075 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 105 0 90 1 0 1 1 0 8 0 amappl9 144 275 0 275 1 1 0 1 0 8 0 amappl8 136 118 0 115 1 0 1 1 0 8 0 amappl7 128 157 0 143 1 0 1 1 0 8 0 amappl6 120 177 0 175 1 0 1 1 0 8 0 amappl5 112 100 0 89 1 0 1 1 0 8 0 amappl4 104 305 0 285 1 0 1 1 0 8 0 amappl3 96 4136 0 4009 4 0 4 4 0 8 0 amappl2 88 585 0 520 2 0 2 2 0 8 0 amappl1 80 12342 0 11738 15 2 13 15 0 8 0 amappl 88 5861 0 5685 5 0 5 5 0 92 0 uvmvnodes 80 112 0 0 3 0 3 3 0 8 0 dma32768 32768 2 0 2 1 0 1 1 0 8 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 128 254 0 254 2 2 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 2 1 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 24 0 4 1 0 1 1 0 8 0 uaddrrnd 24 842 0 810 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 842 0 810 1 0 1 1 0 8 0 vmmpekpl 168 8651 0 8609 3 0 3 3 0 8 0 vmmpepl 168 64687 0 62697 97 1 96 97 0 357 4 vmsppl 488 841 0 810 6 1 5 5 0 8 0 rwobjpl 80 20372 0 19275 27 0 27 27 0 8 0 pdppl 4096 1691 0 1620 103 30 73 85 0 8 2 pvpl 32 14820 0 0 122 2 120 120 0 265 0 pmappl 256 841 0 810 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 484 0 34 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83950ff0) 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 __mp_lock(ffffffff83a10cc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a10cc0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83a10cc0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a10cc0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 intr_handler(ffff80003c470c90,ffff8000002a2900) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x769f08c10790, count: 4 ddb{0}> trace x86_ipi_db(ffffffff83950ff0) 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 __mp_lock(ffffffff83a10cc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a10cc0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83a10cc0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a10cc0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 intr_handler(ffff80003c470c90,ffff8000002a2900) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x769f08c10790, count: -11 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x766ddf775230, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x766ddf775230, count: -1