Warning: Permanently added '10.128.1.91' (ED25519) to the list of known hosts. 2025/12/25 10:45:46 ignoring optional flag "type"="gce" 2025/12/25 10:45:46 parsed 1 programs 2025/12/25 10:45:48 executed programs: 0 panic: ufs_rename: lost dir entry Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 385144 49810 0 0 0x4000000 0 syz-executor.5 *372676 83930 0 0 0x4000000 1K syz-executor.1 db_enter() at db_enter+0x25 panic(ffffffff8344f5d3) at panic+0x1e5 ufs_rename(ffff80002a464798) at ufs_rename+0x175f VOP_RENAME(fffffd8069c0b200,fffffd8079845490,ffff80002a464968,fffffd8069c0b710,0,ffff80002a4648b8) at VOP_RENAME+0x137 dorenameat(ffff80002a2fd258,ffffff9c,200001c0,ffffff9c,20000200) at dorenameat+0x3f7 syscall(ffff80002a464b00) at syscall+0xb17 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4e722246370, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: ufs_rename: lost dir entry ddb{1}> trace db_enter() at db_enter+0x25 panic(ffffffff8344f5d3) at panic+0x1e5 ufs_rename(ffff80002a464798) at ufs_rename+0x175f VOP_RENAME(fffffd8069c0b200,fffffd8079845490,ffff80002a464968,fffffd8069c0b710,0,ffff80002a4648b8) at VOP_RENAME+0x137 dorenameat(ffff80002a2fd258,ffffff9c,200001c0,ffffff9c,20000200) at dorenameat+0x3f7 syscall(ffff80002a464b00) at syscall+0xb17 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4e722246370, count: -7 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a464520 rbx 0xffff8000299dee07 rdx 0x3fd rcx 0 rax 0x22 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6457f4e3ba5f4989 r11 0x85ec0692155e39f7 r12 0xffff8000299dec08 r13 0 r14 0 r15 0x1 rip 0xffffffff82505795 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a464510 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) tid=372676 pid=83930 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2fca90,0xffff80002a2fc808 process=0xffff8000fffe9830 user=0xffff80002a45f000, vmspace=0xfffffd800b0631e8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 52732 57050 37199 0 2 0 syz-executor.0 85210 359632 55821 0 2 0 syz-executor.4 85210 494865 55821 0 3 0x4000000 getblk syz-executor.4 49810 217191 77010 0 2 0 syz-executor.5 49810 385144 77010 0 7 0x4000000 syz-executor.5 40020 113115 56675 0 2 0 syz-executor.3 40020 151385 56675 0 3 0x4000080 fsleep syz-executor.3 83930 177480 21132 0 3 0x80 nanoslp syz-executor.1 83930 512157 21132 0 2 0x4000000 syz-executor.1 83930 138467 21132 0 2 0x4000000 syz-executor.1 *83930 372676 21132 0 7 0x4000000 syz-executor.1 83930 378510 21132 0 3 0x4000080 fsleep syz-executor.1 56675 507502 53133 0 3 0x82 nanoslp syz-executor.3 29752 231142 53133 0 3 0x2 getblk syz-executor.6 37199 175610 53133 0 3 0x82 nanoslp syz-executor.0 55821 248634 53133 0 3 0x82 nanoslp syz-executor.4 54942 168640 53133 0 3 0x2 biowait syz-executor.7 58772 371396 53133 0 3 0x2 getblk syz-executor.2 77010 353292 53133 0 3 0x82 nanoslp syz-executor.5 21132 81765 53133 0 3 0x82 nanoslp syz-executor.1 53133 316798 41234 0 3 0x82 kqread syz-execprog 53133 318919 41234 0 3 0x4000082 thrsleep syz-execprog 53133 205713 41234 0 3 0x4000082 wait syz-execprog 53133 513513 41234 0 3 0x4000082 wait syz-execprog 53133 340107 41234 0 3 0x4000082 thrsleep syz-execprog 53133 187580 41234 0 3 0x4000082 thrsleep syz-execprog 53133 68217 41234 0 3 0x4000082 wait syz-execprog 53133 374480 41234 0 3 0x4000082 wait syz-execprog 53133 509416 41234 0 3 0x4000082 wait syz-execprog 53133 367452 41234 0 3 0x4000082 wait syz-execprog 53133 434021 41234 0 3 0x4000082 thrsleep syz-execprog 53133 509861 41234 0 3 0x4000082 wait syz-execprog 53133 509996 41234 0 3 0x4000082 wait syz-execprog 53133 477384 41234 0 3 0x4000082 thrsleep syz-execprog 53133 79574 41234 0 3 0x4000082 thrsleep syz-execprog 41234 185729 57950 0 3 0x10008a sigsusp ksh 57950 305793 87957 0 3 0x98 kqread sshd-session 87957 163600 46783 0 3 0x92 kqread sshd-session 6479 341460 1 0 3 0x100083 ttyin getty 46783 187132 1 0 3 0x88 kqread sshd 19197 102692 81556 74 3 0x1100092 bpf pflogd 81556 139620 1 0 3 0x80 sbwait pflogd 70284 1243 39777 73 3 0x1100090 kqread syslogd 39777 219244 1 0 3 0x100082 sbwait syslogd 52743 320680 1 0 3 0x100080 kqread resolvd 94057 520734 95056 77 3 0x100092 kqread dhcpleased 89547 11317 95056 77 3 0x100092 kqread dhcpleased 95056 184496 1 0 3 0x80 kqread dhcpleased 78573 320548 0 0 3 0x14200 bored smr 22956 195893 0 0 3 0x14200 pgzero zerothread 93575 275171 0 0 3 0x14200 aiodoned aiodoned 23268 513360 0 0 3 0x14200 syncer update 94181 515429 0 0 3 0x14200 cleaner cleaner 97255 108290 0 0 3 0x14200 reaper reaper 25424 37157 0 0 3 0x14200 pgdaemon pagedaemon 61803 408164 0 0 3 0x14200 bored viomb 50985 57204 0 0 3 0x40014200 acpi0 acpi0 36400 461136 0 0 3 0x40014200 idle1 54545 455640 0 0 3 0x14200 bored softnet1 79727 519317 0 0 3 0x14200 bored softnet0 63084 477720 0 0 3 0x14200 bored systqmp 57412 35551 0 0 3 0x14200 bored systq 40857 36995 0 0 3 0x14200 tmoslp softclockmp 69886 425215 0 0 3 0x40014200 tmoslp softclock 86131 136953 0 0 3 0x40014200 idle0 1 256369 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 85210 (syz-executor.4) thread 0xffff8000fffee7e0 (494865) exclusive rrwlock inode r = 0 (0xfffffd8068650ed8) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 ufs_ihashins+0x4f #5 ffs_vget+0x187 #6 ffs_inode_alloc+0x279 #7 ufs_mkdir+0xfc #8 VOP_MKDIR+0x101 #9 domkdirat+0x179 #10 syscall+0xb17 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806862bb58) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vfs_lookup+0x11c #6 namei+0x7ca #7 domkdirat+0x8b #8 syscall+0xb17 #9 Xsyscall+0x128 Process 83930 (syz-executor.1) thread 0xffff80002a2fd258 (372676) exclusive rrwlock inode r = 0 (0xfffffd806862bc80) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vget+0x2a2 #6 ufs_ihashget+0x185 #7 ffs_vget+0x8c #8 ufs_lookup+0x1a36 #9 VOP_LOOKUP+0x6e #10 vfs_relookup+0xd4 #11 ufs_rename+0x14aa #12 VOP_RENAME+0x137 #13 dorenameat+0x3f7 #14 syscall+0xb17 #15 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839074c8) #0 witness_lock+0x5f1 #1 __mp_acquire_count+0x58 #2 sleep_finish+0x2d8 #3 rw_do_enter_write+0x1dc #4 rrw_enter+0xc6 #5 VOP_LOCK+0xbd #6 vn_lock+0xa4 #7 vget+0x2a2 #8 ufs_ihashget+0x185 #9 ffs_vget+0x8c #10 ufs_lookup+0x1a36 #11 VOP_LOOKUP+0x6e #12 vfs_relookup+0xd4 #13 ufs_rename+0x14aa #14 VOP_RENAME+0x137 #15 dorenameat+0x3f7 #16 syscall+0xb17 #17 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80686ce900) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vfs_relookup+0x5c #6 ufs_rename+0x14aa #7 VOP_RENAME+0x137 #8 dorenameat+0x3f7 #9 syscall+0xb17 #10 Xsyscall+0x128 Process 29752 (syz-executor.6) thread 0xffff8000fffef4d8 (231142) exclusive rrwlock inode r = 0 (0xfffffd806862bed0) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vn_closefile+0x111 #6 fdrop+0x121 #7 closef+0x192 #8 syscall+0xbd4 #9 Xsyscall+0x128 Process 54942 (syz-executor.7) thread 0xffff8000fffeca88 (168640) exclusive rrwlock inode r = 0 (0xfffffd806862ba30) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vget+0x2a2 #6 ufs_ihashget+0x185 #7 ffs_vget+0x8c #8 ufs_lookup+0x1a36 #9 VOP_LOOKUP+0x6e #10 vfs_lookup+0x93a #11 namei+0x7ca #12 dounlinkat+0xc1 #13 syscall+0xb17 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068650470) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vget+0x2a2 #6 cache_lookup+0x351 #7 ufs_lookup+0x1e3 #8 VOP_LOOKUP+0x6e #9 vfs_lookup+0x93a #10 namei+0x7ca #11 dounlinkat+0xc1 #12 syscall+0xb17 #13 Xsyscall+0x128 Process 58772 (syz-executor.2) thread 0xffff8000fffeda18 (371396) exclusive rrwlock inode r = 0 (0xfffffd8068650348) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vn_closefile+0x111 #6 fdrop+0x121 #7 closef+0x192 #8 syscall+0xbd4 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11050 12084K 12084K 166960K 12144 0 pcb 17 12K 12K 166960K 17 0 rtable 237 6K 7K 166960K 389 0 pf 34 17K 18K 166960K 48 0 ifaddr 43 7K 7K 166960K 49 0 ifgroup 55 2K 2K 166960K 60 0 sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 72 0 ioctlops 0 0K 4K 166960K 1484 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1265 80K 80K 166960K 1288 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 77K 166960K 258 0 proc 69 115K 147K 166960K 555 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 457 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 270 162K 216K 166960K 5623 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 41 82K 112K 166960K 1750 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 12 0K 2K 166960K 31 0 temp 1 8664K 8728K 166960K 6216 0 kqueue 13 20K 20K 166960K 46 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 39 0 36 1 0 1 1 0 8 0 rtentry 176 122 0 12 6 1 5 5 0 8 0 unpcb 144 69 0 52 1 0 1 1 0 8 0 syncache 336 9 0 9 2 1 1 1 0 8 1 tcpcb 736 12 0 9 1 0 1 1 0 8 0 arp 136 20 0 2 1 0 1 1 0 8 0 inpcb 328 73 0 67 1 0 1 1 0 8 0 nd6 152 27 0 3 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 24 0 4 1 0 1 1 0 8 0 pfstkey 128 24 0 4 1 0 1 1 0 8 0 pfstate 448 24 0 4 3 0 3 3 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 501 0 48 32 3 29 29 0 8 0 art_table 40 502 0 48 6 1 5 5 0 8 0 art_node 32 122 0 22 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2072 0 524 99 1 98 98 0 8 0 ffsino 296 2073 0 524 120 0 120 120 0 8 0 nchpl 144 2896 0 1104 69 1 68 68 0 8 0 vnodes 216 2087 0 0 116 0 116 116 0 8 0 namei 1024 23891 0 23887 4 2 2 2 0 8 0 percpumem 16 51 0 1 1 0 1 1 0 8 0 kstatmem 264 28 0 2 2 0 2 2 0 8 0 scxspl 216 12731 0 12730 9 1 8 8 1 8 7 plimitpl 152 59 0 42 1 0 1 1 0 8 0 sigapl 424 642 0 597 7 1 6 6 0 8 0 knotepl 120 103 0 0 4 0 4 4 0 8 0 kqueuepl 224 42 0 33 1 0 1 1 0 8 0 pipepl 344 196 0 168 5 2 3 3 0 8 0 fdescpl 528 626 0 597 4 1 3 3 0 8 0 filepl 160 2677 0 2536 8 1 7 7 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 35 0 18 1 0 1 1 0 8 0 pgrppl 48 35 0 18 1 0 1 1 0 8 0 ucredpl 104 152 0 139 1 0 1 1 0 8 0 zombiepl 144 597 0 597 2 1 1 1 0 8 1 processpl 1232 642 0 597 5 1 4 4 0 8 0 procpl 664 791 0 725 7 1 6 6 0 8 0 sockpl 752 181 0 155 3 0 3 3 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 149 0 0 17 0 17 17 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 152 0 0 9 0 9 9 0 8 0 bufpl 280 5191 0 218 356 0 356 356 0 8 0 anonpl 32 9794 0 0 80 1 79 80 0 246 0 amapchunkpl 152 17460 0 16884 40 12 28 30 0 158 5 amappl16 200 4587 0 4493 11 5 6 6 0 8 0 amappl15 192 15 0 15 2 2 0 1 0 8 0 amappl14 184 18 0 17 2 1 1 1 0 8 0 amappl13 176 498 0 497 2 1 1 1 0 8 0 amappl12 168 1169 0 1126 4 1 3 3 0 8 0 amappl11 160 16 0 15 2 1 1 1 0 8 0 amappl10 152 104 0 81 3 1 2 2 0 8 1 amappl9 144 966 0 966 2 1 1 1 0 8 1 amappl8 136 257 0 224 2 0 2 2 0 8 0 amappl7 128 170 0 163 3 1 2 2 0 8 0 amappl6 120 444 0 426 3 1 2 2 0 8 1 amappl5 112 174 0 164 1 0 1 1 0 8 0 amappl4 104 703 0 668 3 1 2 2 0 8 0 amappl3 96 2326 0 2238 3 0 3 3 0 8 0 amappl2 88 1068 0 1003 8 4 4 6 0 8 2 amappl1 80 18528 0 17912 36 14 22 24 0 8 8 amappl 88 4358 0 4195 8 3 5 5 0 92 0 uvmvnodes 80 118 0 0 3 0 3 3 0 8 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 626 0 597 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 626 0 597 1 0 1 1 0 8 0 vmmpekpl 168 12945 0 12906 2 0 2 2 0 8 0 vmmpepl 168 72541 0 70611 139 13 126 129 0 357 38 vmsppl 488 625 0 597 6 1 5 5 0 8 0 rwobjpl 80 27409 0 26251 59 25 34 40 0 8 8 pdppl 4096 1260 0 1194 130 58 72 78 0 8 6 pvpl 32 54414 0 0 439 0 439 439 0 265 0 pmappl 256 625 0 597 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 311 0 67 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8380aff0) at x86_ipi_db+0x27 x86_ipi_handler() at x86_ipi_handler+0xd9 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff839072c0) at __mp_lock+0x192 intr_handler(ffff80002a426190,ffff8000002a3480) at intr_handler+0xe9 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff839072c0) at __mp_lock+0x192 softintr_dispatch(0) at softintr_dispatch+0x125 dosoftint(0) at dosoftint+0x54 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff839072c0) at __mp_lock+0x192 syscall(ffff80002a4264f0) at syscall+0xaf4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eddeb8faa0, count: 2 ddb{0}> trace x86_ipi_db(ffffffff8380aff0) at x86_ipi_db+0x27 x86_ipi_handler() at x86_ipi_handler+0xd9 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff839072c0) at __mp_lock+0x192 intr_handler(ffff80002a426190,ffff8000002a3480) at intr_handler+0xe9 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff839072c0) at __mp_lock+0x192 softintr_dispatch(0) at softintr_dispatch+0x125 dosoftint(0) at dosoftint+0x54 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff839072c0) at __mp_lock+0x192 syscall(ffff80002a4264f0) at syscall+0xaf4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eddeb8faa0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 panic(ffffffff8344f5d3) at panic+0x1e5 ufs_rename(ffff80002a464798) at ufs_rename+0x175f VOP_RENAME(fffffd8069c0b200,fffffd8079845490,ffff80002a464968,fffffd8069c0b710,0,ffff80002a4648b8) at VOP_RENAME+0x137 dorenameat(ffff80002a2fd258,ffffff9c,200001c0,ffffff9c,20000200) at dorenameat+0x3f7 syscall(ffff80002a464b00) at syscall+0xb17 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4e722246370, count: 8 ddb{1}> trace db_enter() at db_enter+0x25 panic(ffffffff8344f5d3) at panic+0x1e5 ufs_rename(ffff80002a464798) at ufs_rename+0x175f VOP_RENAME(fffffd8069c0b200,fffffd8079845490,ffff80002a464968,fffffd8069c0b710,0,ffff80002a4648b8) at VOP_RENAME+0x137 dorenameat(ffff80002a2fd258,ffffff9c,200001c0,ffffff9c,20000200) at dorenameat+0x3f7 syscall(ffff80002a464b00) at syscall+0xb17 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4e722246370, count: -7