kernel: protection fault trap, code=0 Stopped at sys_semop+0x352: movzwl 0x8(%rbx),%r15d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace sys_semop(ffff80002a2b67e8,ffff80003c4513c0,ffff80003c451310) at sys_semop+0x352 sys/kern/sysv_sem.c:622 syscall(ffff80003c4513c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4513c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe8675bb60f0, count: -3 ddb{1}> show registers rdi 0 rsi 0xb rbp 0xffff80003c4512e0 rbx 0xdeafbeaddeafbead rdx 0 rcx 0xffff80002a2b67e8 rax 0xffff8000299edff0 r8 0x7f7fffffc000 r9 0x1 r10 0x9c743f41ca96132 r11 0x4f8a29c740d9a1f1 r12 0xb r13 0xfffffd80656ad230 r14 0xffff80003c4513c0 r15 0xb rip 0xffffffff824f03f2 sys_semop+0x352 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c4511f0 ss 0 sys_semop+0x352: movzwl 0x8(%rbx),%r15d ddb{1}> show proc PROC (syz-executor) tid=230431 pid=7867 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2b7ca8,0xffff80002a2b7258 process=0xffff80003c4c0e98 user=0xffff80003c44c000, vmspace=0xfffffd806b40d210 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 51569 412659 72911 0 3 0x80 fsleep syz-executor 51569 378680 72911 0 2 0x4000000 syz-executor 7867 502774 49743 0 2 0 syz-executor * 7867 230431 49743 0 7 0x4000000 syz-executor 7867 273278 49743 0 2 0x4000000 syz-executor 13082 453528 25097 0 4 0x82004 syz-executor 13082 476813 25097 0 7 0x4002004 syz-executor 13168 181734 68438 0 3 0x80 fsleep syz-executor 13168 123960 68438 0 3 0x4000080 fifow syz-executor 79474 85884 16289 0 3 0x80 fsleep syz-executor 79474 339465 16289 0 3 0x4000080 piperd syz-executor 98447 116449 71343 0 3 0x80 fsleep syz-executor 98447 404620 71343 0 3 0x4000080 ttyout syz-executor 52256 264771 99998 0 3 0x82 nanoslp syz-executor 88983 189681 0 0 3 0x14200 acct acct 87924 248681 1 0 3 0x100083 ttyopn getty 25097 178472 99998 0 3 0x82 nanoslp syz-executor 83162 363493 0 0 3 0x14280 nfsidl nfsio 95876 129076 0 0 3 0x14280 nfsidl nfsio 24890 504693 0 0 3 0x14280 nfsidl nfsio 453 96441 0 0 3 0x14280 nfsidl nfsio 74578 367255 0 0 3 0x14280 nfsidl nfsio 93089 371666 0 0 3 0x14280 nfsidl nfsio 1051 497048 0 0 3 0x14280 nfsidl nfsio 42958 321975 0 0 3 0x14280 nfsidl nfsio 55540 457188 0 0 3 0x14280 nfsidl nfsio 7402 164236 0 0 3 0x14280 nfsidl nfsio 14388 255113 0 0 3 0x14280 nfsidl nfsio 56935 104858 0 0 3 0x14280 nfsidl nfsio 74100 212491 0 0 3 0x14280 nfsidl nfsio 19644 368551 0 0 3 0x14280 nfsidl nfsio 18363 239735 0 0 3 0x14280 nfsidl nfsio 1161 489928 0 0 3 0x14280 nfsidl nfsio 28914 215667 0 0 3 0x14280 nfsidl nfsio 44386 440929 0 0 3 0x14280 nfsidl nfsio 92081 113779 0 0 3 0x14280 nfsidl nfsio 16310 329276 0 0 3 0x14280 nfsidl nfsio 9424 359411 0 0 3 0x14200 bored sosplice 16289 227042 99998 0 3 0x82 nanoslp syz-executor 49743 64337 99998 0 3 0x82 nanoslp syz-executor 36190 138289 99998 0 3 0x2 biowait syz-executor 72911 8025 99998 0 3 0x82 nanoslp syz-executor 68438 240835 99998 0 2 0x2 syz-executor 71343 109164 99998 0 3 0x82 nanoslp syz-executor 99998 109952 43032 0 2 0x2 syz-executor 43032 148333 44524 0 3 0x10008a sigsusp ksh 44524 477321 73308 0 3 0x98 kqread sshd-session 73308 347491 11078 0 3 0x92 kqread sshd-session 11078 423430 1 0 3 0x88 kqread sshd 62364 237730 96644 74 3 0x1100092 bpf pflogd 96644 408635 1 0 3 0x80 sbwait pflogd 30145 327607 39056 73 3 0x1100090 kqread syslogd 39056 510817 1 0 3 0x100082 sbwait syslogd 98599 257576 1 0 3 0x100080 kqread resolvd 31669 290640 56837 77 3 0x100092 kqread dhcpleased 843 46498 56837 77 3 0x100092 kqread dhcpleased 56837 443398 1 0 3 0x80 kqread dhcpleased 84626 288695 0 0 3 0x14200 bored smr 79709 459192 0 0 2 0x14200 zerothread 33406 150034 0 0 3 0x14200 aiodoned aiodoned 95971 473609 0 0 3 0x14200 syncer update 56908 87717 0 0 3 0x14200 cleaner cleaner 97082 342763 0 0 3 0x14200 reaper reaper 53021 3941 0 0 3 0x14200 pgdaemon pagedaemon 20156 452259 0 0 3 0x14200 bored viomb 12172 288759 0 0 3 0x40014200 acpi0 acpi0 48776 182491 0 0 3 0x40014200 idle1 74705 410349 0 0 3 0x14200 bored softnet7 13053 481472 0 0 3 0x14200 bored softnet6 77309 486431 0 0 3 0x14200 bored softnet5 79655 62414 0 0 3 0x14200 bored softnet4 1227 183272 0 0 3 0x14200 bored softnet3 93709 268913 0 0 3 0x14200 bored softnet2 98343 213607 0 0 3 0x14200 bored softnet1 63262 287633 0 0 3 0x14200 bored softnet0 83917 509853 0 0 3 0x14200 bored systqmp 49206 448484 0 0 3 0x14200 bored systq 84479 428799 0 0 3 0x14200 tmoslp softclockmp 44009 362186 0 0 3 0x40014200 tmoslp softclock 36932 231432 0 0 3 0x40014200 idle0 1 441939 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 51569 (syz-executor) thread 0xffff80002a2b6020 (378680) exclusive rwlock vmmaplk r = 0 (0xfffffd806b40dab0) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918 #4 uvm_fault_check+0x895 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x895 sys/uvm/uvm_fault.c:784 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #8 recall_trap+0x8 Process 7867 (syz-executor) thread 0xffff80002a2b67e8 (230431) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838729b0) #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 malloc+0xe3 sys/kern/kern_malloc.c:174 #3 sys_semop+0x22f sys/kern/sysv_sem.c:-1 #4 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #5 Xsyscall+0x128 Process 36190 (syz-executor) thread 0xffff80002a2b8018 (138289) exclusive rrwlock inode r = 0 (0xfffffd805f55d0e8) #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 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bdc6b38) #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:746 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10249 11112K 11770K 166960K 12307 0 pcb 17 16K 25K 166960K 506 0 rtable 197 11K 11K 166960K 423 0 pf 40 18K 67486K 166960K 145 0 ifaddr 41 7K 8K 166960K 110 0 ifgroup 61 2K 2K 166960K 183 0 sysctl 4 1K 9K 166960K 9 0 counters 72 37K 38K 166960K 198 0 ioctlops 0 0K 4K 166960K 1655 0 iov 0 0K 32K 166960K 60 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1425 90K 90K 166960K 2137 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 12 0 VM map 2 1K 1K 166960K 2 0 sem 21 3K 3K 166960K 32 0 dirhash 12 2K 3K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 992 0 sigio 0 0K 0K 166960K 19 0 proc 72 115K 164K 166960K 678 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 117 0 in_multi 79 5K 7K 166960K 189 0 ether_multi 1 0K 0K 166960K 8 0 mrt 2 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 271 1208K 1208K 166960K 271 0 exec 0 0K 1K 166960K 463 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 228 159K 173K 166960K 10483 0 UVM aobj 29 2K 2K 166960K 35 0 pinsyscall 42 84K 104K 166960K 2151 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 36 0 NDP 14 0K 1K 166960K 74 0 temp 78 8652K 8724K 166960K 40558 0 kqueue 13 20K 32K 166960K 183 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 161 0 157 3 0 3 3 0 8 2 rtentry 176 139 0 64 5 0 5 5 0 8 0 unpcb 144 568 0 549 4 2 2 2 0 8 0 syncache 336 6 0 6 3 3 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 736 265 0 257 7 0 7 7 0 8 6 arp 128 12 0 3 1 0 1 1 0 8 0 inpcb 328 1222 0 1211 20 13 7 9 0 8 5 nd6 144 22 0 7 1 0 1 1 0 8 0 pkpcb 40 7 0 7 3 2 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 45 0 44 3 2 1 1 0 8 0 pppxif 1504 11 0 11 3 3 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 3 0 1 1 0 1 1 0 482 0 pffrnode 88 3 0 1 1 0 1 1 0 8 0 pffrent 40 6 0 4 2 1 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 65 0 29 1 0 1 1 0 8 0 pfstkey 128 66 0 30 2 0 2 2 0 8 0 pfstate 384 66 0 30 5 0 5 5 0 8 0 pfrule 1344 25 0 19 2 0 2 2 0 8 0 rttmr 136 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 714 0 367 31 5 26 29 0 8 3 art_table 40 716 0 367 5 0 5 5 0 8 0 art_node 32 135 0 71 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 25 0 7 1 0 1 1 0 8 0 shmpl 112 32 0 6 1 0 1 1 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 3229 0 1724 96 0 96 96 0 8 0 ffsino 296 3229 0 1724 118 0 118 118 0 8 0 nchpl 144 4566 0 2871 64 0 64 64 0 8 0 rtmask 32 9 0 9 2 1 1 1 0 8 1 uvmvnodes 80 3739 0 0 77 0 77 77 0 8 0 vnodes 216 3739 0 0 208 0 208 208 0 8 0 namei 1024 14954 0 14953 4 3 1 2 0 8 0 percpumem 16 114 0 63 1 0 1 1 0 8 0 kstatmem 264 108 0 76 3 0 3 3 0 8 0 scsiplug 72 4 0 4 3 2 1 1 0 8 1 scxspl 216 31170 0 31169 16 15 1 8 1 8 0 plimitpl 152 138 0 119 1 0 1 1 0 8 0 sigapl 424 1319 0 1244 9 0 9 9 0 8 0 knotepl 120 476 0 0 15 0 15 15 0 8 0 kqueuepl 224 338 0 329 5 4 1 3 0 8 0 pipepl 344 172 0 144 3 0 3 3 0 8 0 fdescpl 528 1275 0 1244 3 0 3 3 0 8 0 filepl 160 7387 0 7162 21 8 13 16 0 8 1 lockfpl 104 310 0 307 1 0 1 1 0 8 0 lockfspl 48 129 0 126 1 0 1 1 0 8 0 sessionpl 144 28 0 19 1 0 1 1 0 8 0 pgrppl 48 50 0 33 1 0 1 1 0 8 0 ucredpl 104 1015 0 1001 1 0 1 1 0 8 0 zombiepl 144 1378 0 1377 1 0 1 1 0 8 0 processpl 1232 1319 0 1244 6 0 6 6 0 8 0 procpl 664 2725 0 2643 8 0 8 8 0 8 0 sosppl 168 9 0 9 4 3 1 1 0 8 1 sockpl 752 2012 0 1978 26 15 11 13 0 8 7 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 111 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 55 0 0 6 0 6 6 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 201 0 0 13 0 13 13 0 8 0 bufpl 280 14498 0 8355 439 0 439 439 0 8 0 anonpl 32 10549 0 0 85 0 85 85 0 246 0 amapchunkpl 152 35662 0 35193 44 18 26 30 0 158 6 amappl16 200 5206 0 5174 48 26 22 25 0 8 15 amappl15 192 8 0 8 2 2 0 1 0 8 0 amappl14 184 126 0 114 1 0 1 1 0 8 0 amappl13 176 9 0 9 1 1 0 1 0 8 0 amappl12 168 1955 0 1924 3 1 2 2 0 8 0 amappl11 160 51 0 36 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 259 0 259 1 1 0 1 0 8 0 amappl8 136 16 0 14 1 0 1 1 0 8 0 amappl7 128 132 0 120 1 0 1 1 0 8 0 amappl6 120 198 0 194 1 0 1 1 0 8 0 amappl5 112 136 0 126 1 0 1 1 0 8 0 amappl4 104 381 0 361 1 0 1 1 0 8 0 amappl3 96 6179 0 6085 3 0 3 3 0 8 0 amappl2 88 1531 0 1452 2 0 2 2 0 8 0 amappl1 80 12688 0 12077 18 4 14 15 0 8 0 amappl 88 9609 0 9453 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 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 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 34 0 6 1 0 1 1 0 8 0 uaddrrnd 24 1275 0 1244 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1275 0 1244 1 0 1 1 0 8 0 vmmpekpl 168 11630 0 11587 3 0 3 3 0 8 0 vmmpepl 168 86851 0 84859 124 17 107 109 0 357 1 vmsppl 488 1274 0 1244 8 3 5 5 0 8 1 rwobjpl 80 29194 0 24496 107 4 103 103 0 8 0 pdppl 4096 2558 0 2488 108 34 74 86 0 8 4 pvpl 32 18078 0 0 146 0 146 146 0 265 0 pmappl 256 1274 0 1244 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 297 0 48 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff83837ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff838727a8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838727a8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 intr_handler(ffff80003c50d270,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff838727a8) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838727a8) at __mp_lock+0x199 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff838727a8,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 malloc(84,3f,1) at malloc+0xe3 sys/kern/kern_malloc.c:174 sys_execve(ffff80002a2b6d18,ffff80003c50da90,ffff80003c50d9e0) at sys_execve+0xf8 sys/kern/kern_exec.c:297 syscall(ffff80003c50da90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c50da90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbae1bae7600, count: -13 ddb{0}> machine ddbcpu 1 Stopped at sys_semop+0x352: movzwl 0x8(%rbx),%r15d ddb{1}> trace sys_semop(ffff80002a2b67e8,ffff80003c4513c0,ffff80003c451310) at sys_semop+0x352 sys/kern/sysv_sem.c:622 syscall(ffff80003c4513c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4513c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe8675bb60f0, count: -3