uvm_fault(0xffffffff83508d40, 0xffff800015232c00, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memcpy+0x19: repe movsq (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND 121085 77803 0 0 0 1 syz-executor *419022 52281 0 0x2 0 0K syz-executor memcpy() at memcpy+0x19 ffs_truncate(fffffd80687fe230,0,4,fffffd807f7d3068) at ffs_truncate+0xcb6 ufs_rmdir(ffff80002a10bf38) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265 VOP_RMDIR(fffffd80748bc3c0,fffffd807d0b22d0,ffff80002a10c018) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413 dounlinkat(ffff8000371e7980,ffffff9c,7170f7264f10,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885 syscall(ffff80002a10c190) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a10c190) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7170f7264f00, count: 8 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(0xffffffff83508d40, 0xffff800015232c00, 0, 2) -> d ddb{0}> trace memcpy() at memcpy+0x19 ffs_truncate(fffffd80687fe230,0,4,fffffd807f7d3068) at ffs_truncate+0xcb6 ufs_rmdir(ffff80002a10bf38) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265 VOP_RMDIR(fffffd80748bc3c0,fffffd807d0b22d0,ffff80002a10c018) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413 dounlinkat(ffff8000371e7980,ffffff9c,7170f7264f10,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885 syscall(ffff80002a10c190) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a10c190) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7170f7264f00, count: -7 ddb{0}> show registers rdi 0xffff800015232c00 rsi 0xfffffd80746f8500 rbp 0xffff80002a10bca0 rbx 0 rdx 0x100 rcx 0x20 rax 0x659 r8 0xffffffffffffffff r9 0x65400 acpi_pdirpa+0x51271 r10 0x2b3f68b0987003f6 r11 0xffff800015232c00 r12 0xfffffd80687fe230 r13 0xfffffd8072cbf470 r14 0x1 r15 0xffff800000a5f000 rip 0xffffffff82135c09 memcpy+0x19 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a10bc38 ss 0x10 memcpy+0x19: repe movsq (%rsi),%es:(%rdi) ddb{0}> show proc PROC (syz-executor) tid=419022 pid=52281 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800031978ce0,0xffff8000371e7480 process=0xffff8000ffff9b40 user=0xffff80002a107000, vmspace=0xfffffd8069036008 estcpu=36, cpticks=1, pctcpu=0.1, user=0, sys=5, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 77803 121085 54181 0 7 0 syz-executor 62049 368224 5868 0 2 0 syz-executor 49295 216382 92287 0 2 0 syz-executor 49295 392440 92287 0 2 0x4000000 syz-executor 33098 86242 10772 0 2 0 syz-executor 33098 93134 10772 0 3 0x4000080 fsleep syz-executor 36804 252916 2082 0 2 0 syz-executor 36804 219757 2082 0 3 0x4000080 fsleep syz-executor 18998 66575 99780 0 2 0x10 syz-executor 18998 224786 99780 0 3 0x4000090 fsleep syz-executor 41505 382607 8939 0 2 0 syz-executor 41505 219391 8939 0 3 0x4000080 fsleep syz-executor 54181 167742 28465 0 2 0x482 syz-executor 5868 153560 28465 0 2 0x482 syz-executor 10772 94574 28465 0 2 0x482 syz-executor 2082 96493 28465 0 2 0x482 syz-executor 92287 322983 28465 0 2 0x482 syz-executor 8939 340620 28465 0 2 0x482 syz-executor *52281 419022 28465 0 7 0x2 syz-executor 99780 123223 28465 0 2 0x482 syz-executor 53454 220019 0 0 3 0x14200 bored sosplice 28465 235182 45068 0 2 0x2 syz-executor 45068 73953 76810 0 3 0x10008a sigsusp ksh 76810 521693 64701 0 3 0x98 kqread sshd-session 64701 97014 76941 0 3 0x92 kqread sshd-session 84721 61306 1 0 3 0x100083 ttyin getty 76941 440158 1 0 3 0x88 kqread sshd 27947 132761 20978 74 3 0x1100092 bpf pflogd 20978 27630 1 0 3 0x80 sbwait pflogd 57164 421933 12834 73 2 0x1100010 syslogd 12834 214440 1 0 3 0x100082 sbwait syslogd 47592 328017 1 0 3 0x100080 kqread resolvd 64415 499972 84672 77 3 0x100092 kqread dhcpleased 10902 501792 84672 77 3 0x100092 kqread dhcpleased 84672 273098 1 0 3 0x80 kqread dhcpleased 65028 22199 0 0 3 0x14200 bored smr 37136 490269 0 0 2 0x14200 zerothread 91883 480933 0 0 3 0x14200 aiodoned aiodoned 89558 461568 0 0 3 0x14200 syncer update 47461 196057 0 0 3 0x14200 cleaner cleaner 61085 58293 0 0 3 0x14200 reaper reaper 31742 488018 0 0 3 0x14200 pgdaemon pagedaemon 63222 49017 0 0 3 0x14200 bored viomb 44757 313468 0 0 3 0x40014200 acpi0 acpi0 47552 142127 0 0 3 0x40014200 idle1 26914 109335 0 0 3 0x14200 bored softnet3 47821 345924 0 0 3 0x14200 bored softnet2 87682 419176 0 0 3 0x14200 bored softnet1 8677 120997 0 0 3 0x14200 bored softnet0 96731 404607 0 0 3 0x14200 bored systqmp 75679 85879 0 0 3 0x14200 bored systq 57208 241874 0 0 2 0x14200 softclockmp 25856 255767 0 0 3 0x40014200 tmoslp softclock 61309 371314 0 0 3 0x40014200 idle0 1 28734 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 52281 (syz-executor) thread 0xffff8000371e7980 (419022) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83507c70) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 __mp_acquire_count+0x58 #2 mi_switch+0x658 sys/kern/sched_bsd.c:460 #3 sleep_finish+0x219 sys/kern/kern_synch.c:416 #4 biowait+0xc1 sys/kern/vfs_bio.c:1254 #5 bwrite+0x2e2 sys/kern/vfs_bio.c:766 #6 ufs_dirremove+0x2a9 sys/ufs/ufs/ufs_lookup.c:919 #7 ufs_rmdir+0x287 sys/ufs/ufs/ufs_vnops.c:1248 #8 VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413 #9 dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885 #10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80687fe2c8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8074c06708) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10212 10123K 10630K 166960K 12773 0 pcb 17 16K 18K 166960K 222 0 rtable 238 8K 8K 166960K 2294 0 pf 40 18K 22K 166960K 221 0 ifaddr 46 8K 9K 166960K 322 0 ifgroup 61 2K 2K 166960K 348 0 sysctl 4 1K 1K 166960K 6 0 counters 68 36K 37K 166960K 222 0 ioctlops 0 0K 4K 166960K 1608 0 iov 0 0K 16K 166960K 38 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1508 95K 95K 166960K 3084 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 18 11K 11K 166960K 87 0 dirhash 15 2K 3K 166960K 36 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 17 61K 97K 166960K 1775 0 sigio 0 0K 0K 166960K 78 0 proc 72 91K 140K 166960K 2296 0 subproc 104 6K 7K 166960K 884 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 86 0 in_multi 99 7K 7K 166960K 821 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 1215 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 219 72K 91K 166960K 14362 0 UVM aobj 118 5K 5K 166960K 126 0 pinsyscall 42 84K 108K 166960K 4404 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 31 0 NDP 20 0K 2K 166960K 237 0 temp 75 6824K 6890K 166960K 64282 0 kqueue 14 22K 28K 166960K 145 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 211 0 208 1 0 1 1 0 8 0 rtentry 112 807 0 698 6 2 4 4 0 8 0 unpcb 144 808 0 788 10 9 1 6 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 808 477 0 470 19 18 1 8 0 8 0 arp 120 142 0 124 1 0 1 1 0 8 0 inpcb 336 1553 0 1541 31 29 2 12 0 8 1 nd6 136 212 0 187 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 2 0 1 0 8 0 kcovpl 48 68 0 60 1 0 1 1 0 8 0 ppxss 1168 13 0 12 6 5 1 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 18 0 15 1 0 1 1 0 482 0 pffrnode 88 18 0 15 1 0 1 1 0 8 0 pffrent 40 33 0 30 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 pfanchor 1288 1 0 1 1 1 0 1 0 8 0 pfstitem 24 144 0 106 1 0 1 1 0 8 0 pfstkey 128 145 0 107 2 0 2 2 0 8 0 pfstate 376 144 0 107 4 0 4 4 0 8 0 pfrule 1344 30 0 24 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3216 0 2763 40 11 29 31 0 8 0 art_table 32 3217 0 2763 4 0 4 4 0 8 0 art_node 16 802 0 704 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 7 1 1 0 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 81 0 65 1 0 1 1 0 8 0 shmpl 112 123 0 8 4 0 4 4 0 8 0 dirhash 1024 34 0 15 3 0 3 3 0 8 0 dino2pl 256 2993 0 1364 102 0 102 102 0 8 0 ffsino 272 2993 0 1364 109 0 109 109 0 8 0 nchpl 144 4244 0 2466 66 0 66 66 0 8 0 uvmvnodes 80 4621 0 0 95 0 95 95 0 8 0 vnodes 216 4621 0 0 257 0 257 257 0 8 0 namei 1024 20933 0 20933 5 4 1 2 0 8 1 percpumem 16 125 0 77 1 0 1 1 0 8 0 kstatmem 264 182 0 154 4 2 2 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 30624 0 30624 11 10 1 8 1 8 1 plimitpl 152 224 0 207 1 0 1 1 0 8 0 sigapl 424 1955 0 1905 10 3 7 7 0 8 0 futexpl 64 11581 0 11577 7 6 1 1 0 8 0 knotepl 120 675 0 0 18 0 18 18 0 8 0 kqueuepl 216 296 0 286 5 4 1 3 0 8 0 pipepl 320 388 0 361 6 3 3 6 0 8 0 fdescpl 496 1935 0 1904 10 5 5 6 0 8 0 filepl 152 10127 0 9876 38 27 11 18 0 8 1 lockfpl 104 487 0 485 2 1 1 2 0 8 0 lockfspl 48 211 0 209 1 0 1 1 0 8 0 sessionpl 144 82 0 73 1 0 1 1 0 8 0 pgrppl 48 152 0 135 1 0 1 1 0 8 0 ucredpl 104 1102 0 1086 1 0 1 1 0 8 0 zombiepl 144 1905 0 1905 1 0 1 1 0 8 1 processpl 1160 1955 0 1905 5 1 4 5 0 8 0 procpl 648 3203 0 3148 8 2 6 6 0 8 0 srpgc 96 8 0 8 3 3 0 1 0 8 0 sosppl 168 4 0 4 2 2 0 1 0 8 0 sockpl 664 2751 0 2717 38 34 4 14 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 257 0 0 33 0 33 33 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 698 0 0 42 0 42 42 0 8 0 bufpl 280 9134 0 1768 527 0 527 527 0 8 0 anonpl 24 292224 0 288744 62 11 51 54 0 185 17 amapchunkpl 152 46248 0 45808 40 8 32 33 0 158 12 amappl16 200 4852 0 4834 27 25 2 14 0 8 0 amappl15 192 14 0 14 2 2 0 1 0 8 0 amappl14 184 236 0 224 1 0 1 1 0 8 0 amappl13 176 34 0 33 1 0 1 1 0 8 0 amappl12 168 3529 0 3499 3 1 2 2 0 8 0 amappl11 160 84 0 70 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 1 0 1 0 8 0 amappl9 144 128 0 127 1 0 1 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 221 0 208 1 0 1 1 0 8 0 amappl6 120 766 0 764 1 0 1 1 0 8 0 amappl5 112 375 0 362 1 0 1 1 0 8 0 amappl4 104 503 0 484 1 0 1 1 0 8 0 amappl3 96 8766 0 8666 6 2 4 4 0 8 0 amappl2 88 1514 0 1444 2 0 2 2 0 8 0 amappl1 80 16004 0 15443 14 1 13 14 0 8 0 amappl 88 13493 0 13336 6 1 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 dma256 256 7 0 7 2 2 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 72 125 0 8 3 0 3 3 0 8 0 uaddrrnd 24 1935 0 1904 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1935 0 1904 1 0 1 1 0 8 0 vmmpekpl 168 16735 0 16686 3 0 3 3 0 8 0 vmmpepl 168 122915 0 121104 106 22 84 95 0 357 2 vmsppl 440 1934 0 1904 6 2 4 5 0 8 0 rwobjpl 56 40377 0 34741 84 3 81 81 0 8 0 pdppl 4096 3877 0 3808 172 95 77 87 0 8 8 pvpl 32 28754 0 0 232 0 232 232 0 265 0 pmappl 248 1934 0 1904 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 572 0 166 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace memcpy() at memcpy+0x19 ffs_truncate(fffffd80687fe230,0,4,fffffd807f7d3068) at ffs_truncate+0xcb6 ufs_rmdir(ffff80002a10bf38) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265 VOP_RMDIR(fffffd80748bc3c0,fffffd807d0b22d0,ffff80002a10c018) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413 dounlinkat(ffff8000371e7980,ffffff9c,7170f7264f10,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885 syscall(ffff80002a10c190) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a10c190) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7170f7264f00, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff83507a68) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83507a68) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 sys_mmap(ffff8000ffff6f50,ffff8000371b51e0,ffff8000371b5130) at sys_mmap+0x62f sys/uvm/uvm_mmap.c:287 syscall(ffff8000371b51e0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371b51e0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78ac6f7e60c0, count: 8 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff83507a68) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83507a68) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 sys_mmap(ffff8000ffff6f50,ffff8000371b51e0,ffff8000371b5130) at sys_mmap+0x62f sys/uvm/uvm_mmap.c:287 syscall(ffff8000371b51e0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371b51e0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78ac6f7e60c0, count: -7