panic: bad dir Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 43324 62894 0 0 0 0 syz-executor *439324 62894 0 0 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8302e260) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff800031b925d8,ffff800031b925d8,edad6d0bf78c139d) at ufs_dirbadentry VOP_LOOKUP(fffffd806bbaf128,ffff800031b92978,ffff800031b929a8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff800031b92948) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff800031b92948) at namei+0x7aa sys/kern/vfs_lookup.c:250 vn_open(ffff800031b92948,207,0) at vn_open+0x1f4 sys/kern/vfs_vnops.c:107 doopenat(ffff8000ffff22a8,ffffff9c,200000c0,206,0,ffff800031b92af0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff800031b92ba0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800031b92ba0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4f2ca8695c0, count: 5 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: bad dir ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8302e260) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff800031b925d8,ffff800031b925d8,edad6d0bf78c139d) at ufs_dirbadentry VOP_LOOKUP(fffffd806bbaf128,ffff800031b92978,ffff800031b929a8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff800031b92948) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff800031b92948) at namei+0x7aa sys/kern/vfs_lookup.c:250 vn_open(ffff800031b92948,207,0) at vn_open+0x1f4 sys/kern/vfs_vnops.c:107 doopenat(ffff8000ffff22a8,ffffff9c,200000c0,206,0,ffff800031b92af0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff800031b92ba0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800031b92ba0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4f2ca8695c0, count: -10 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800031b92400 rbx 0xffff800029b7cdbf rdx 0xffff8000012a54c0 rcx 0xffff8000ffff22a8 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa6a6e169173a91e0 r11 0x1af88842ed055996 r12 0xffff800029b7cbc0 r13 0 r14 0 r15 0x1 rip 0xffffffff823851f5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800031b923f0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=439324 pid=62894 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=0xffff8000ffff2f50,0xffff8000ffff2a50 process=0xffff8000fffeed70 user=0xffff800031b8d000, vmspace=0xfffffd806bc06020 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 21940 496618 6795 0 2 0 syz-executor 21940 14221 6795 0 3 0x4000080 fsleep syz-executor 21940 123632 6795 0 3 0x4000080 fsleep syz-executor 21940 482493 6795 0 3 0x4000080 fsleep syz-executor 98210 339896 98153 0 2 0 syz-executor 98210 76791 98153 0 3 0x4000080 fsleep syz-executor 93328 79892 84638 0 2 0 syz-executor 93328 224472 84638 0 3 0x4000080 ttyout syz-executor 93328 489127 84638 0 3 0x4000080 ttyout syz-executor 62894 43324 85199 0 7 0 syz-executor *62894 439324 85199 0 7 0x4000000 syz-executor 25141 389518 18884 0 3 0x80 nanoslp syz-executor 25141 480193 18884 0 3 0x4000080 msgwait syz-executor 25141 171162 18884 0 3 0x4000080 fsleep syz-executor 16975 177513 48626 60928 3 0x90 nanoslp syz-executor 16975 124453 48626 60928 3 0x4000090 kqpoll syz-executor 16975 361162 48626 60928 3 0x4000090 fsleep syz-executor 89179 493495 1 0 3 0x100083 ttyin getty 77522 46752 0 0 3 0x14200 bored sosplice 6354 297205 58115 0 3 0x100082 sbwait ndp 58115 473053 37786 0 3 0x10008a sigsusp sh 98153 408004 99510 0 3 0x82 nanoslp syz-executor 84638 55936 99510 0 2 0x2 syz-executor 85199 94501 99510 0 3 0x82 nanoslp syz-executor 18884 227108 99510 0 2 0x2 syz-executor 48626 345212 99510 0 3 0x82 nanoslp syz-executor 6795 121190 99510 0 3 0x82 nanoslp syz-executor 37786 2068 99510 0 3 0x82 wait syz-executor 99510 477427 76083 0 3 0x82 wait syz-executor 76083 183181 92899 0 3 0x10008a sigsusp ksh 92899 357290 36013 0 3 0x98 kqread sshd-session 36013 285954 74028 0 3 0x92 kqread sshd-session 74028 242606 1 0 3 0x88 kqread sshd 34418 108041 41064 74 3 0x1100092 bpf pflogd 41064 52362 1 0 3 0x80 sbwait pflogd 4683 295646 79728 73 3 0x1100090 kqread syslogd 79728 412067 1 0 3 0x100082 sbwait syslogd 31833 252721 1 0 3 0x100080 kqread resolvd 97688 80364 78565 77 3 0x100092 kqread dhcpleased 92804 135724 78565 77 3 0x100092 kqread dhcpleased 78565 150882 1 0 3 0x80 kqread dhcpleased 1602 332644 0 0 3 0x14200 bored smr 73675 85511 0 0 3 0x14200 pgzero zerothread 86676 35240 0 0 3 0x14200 aiodoned aiodoned 70276 103044 0 0 3 0x14200 syncer update 78283 126546 0 0 3 0x14200 cleaner cleaner 93860 287188 0 0 3 0x14200 reaper reaper 55692 307681 0 0 3 0x14200 pgdaemon pagedaemon 47396 397512 0 0 3 0x14200 bored viomb 19067 427066 0 0 3 0x40014200 acpi0 acpi0 26552 262571 0 0 3 0x40014200 idle1 73765 46779 0 0 3 0x14200 bored softnet3 18008 49804 0 0 3 0x14200 bored softnet2 49788 29336 0 0 3 0x14200 bored softnet1 17524 413109 0 0 3 0x14200 bored softnet0 53480 374430 0 0 3 0x14200 bored systqmp 19171 184582 0 0 3 0x14200 bored systq 34372 146485 0 0 3 0x14200 tmoslp softclockmp 68921 131792 0 0 3 0x40014200 tmoslp softclock 53323 339768 0 0 3 0x40014200 idle0 1 108587 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 62894 (syz-executor) thread 0xffff8000ffff22a8 (439324) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8358f6c8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x2f2 sys/kern/kern_synch.c:425 #4 biowait+0xc1 sys/kern/vfs_bio.c:1246 #5 ffs_bufatoff+0x16f sys/ufs/ffs/ffs_subr.c:71 #6 ufs_lookup+0x548 sys/ufs/ufs/ufs_lookup.c:256 #7 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #8 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #9 namei+0x7aa sys/kern/vfs_lookup.c:250 #10 vn_open+0x1f4 sys/kern/vfs_vnops.c:107 #11 doopenat+0x31d sys/kern/vfs_syscalls.c:1123 #12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bb54700) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #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 vn_open+0x1f4 sys/kern/vfs_vnops.c:107 #8 doopenat+0x31d sys/kern/vfs_syscalls.c:1123 #9 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #9 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10209 11326K 11544K 166960K 11727 0 pcb 17 13K 14K 166960K 95 0 rtable 200 5K 6K 166960K 366 0 pf 34 17K 18K 166960K 50 0 ifaddr 41 7K 7K 166960K 50 0 ifgroup 55 2K 2K 166960K 62 0 sysctl 2 0K 0K 166960K 2 0 counters 64 36K 36K 166960K 68 0 ioctlops 0 0K 4K 166960K 1529 0 iov 0 0K 12K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1470 92K 92K 166960K 1742 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 12 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 18 65K 93K 166960K 318 0 sigio 0 0K 0K 166960K 5 0 proc 72 91K 128K 166960K 554 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 30 0 in_multi 91 6K 7K 166960K 116 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 556 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 246 73K 77K 166960K 4557 0 UVM aobj 46 2K 2K 166960K 47 0 pinsyscall 44 88K 103K 166960K 1401 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 15 0 NDP 12 0K 2K 166960K 32 0 temp 39 6815K 6882K 166960K 7210 0 kqueue 13 20K 26K 166960K 40 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 45 0 40 1 0 1 1 0 8 0 rtentry 112 119 0 26 4 0 4 4 0 8 0 unpcb 144 187 0 170 1 0 1 1 0 8 0 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 127 0 121 8 0 8 8 0 8 7 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 336 328 0 317 7 0 7 7 0 8 5 nd6 136 27 0 6 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 1 0 1 1 0 1 1 0 8 1 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 31 0 0 1 0 1 1 0 8 0 pfstkey 128 31 0 0 1 0 1 1 0 8 0 pfstate 376 31 0 0 4 0 4 4 0 8 0 pfrule 1344 23 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 532 0 118 30 0 30 30 0 8 1 art_table 32 533 0 118 4 0 4 4 0 8 0 art_node 16 118 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 10 0 2 1 0 1 1 0 8 0 shmpl 112 44 0 1 2 0 2 2 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 1948 0 443 95 0 95 95 0 8 0 ffsino 272 1948 0 443 101 0 101 101 0 8 0 nchpl 144 2400 0 711 63 0 63 63 0 8 0 uvmvnodes 80 2310 0 0 48 0 48 48 0 8 0 vnodes 216 2310 0 0 129 0 129 129 0 8 0 namei 1024 8060 0 8059 2 1 1 1 0 8 0 percpumem 16 48 0 2 1 0 1 1 0 8 0 kstatmem 264 28 0 4 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 7135 0 7135 9 2 7 7 1 8 7 plimitpl 152 48 0 29 1 0 1 1 0 8 0 sigapl 424 620 0 569 7 0 7 7 0 8 1 futexpl 64 2879 0 2873 1 0 1 1 0 8 0 knotepl 120 541 0 0 17 0 17 17 0 8 0 kqueuepl 216 56 0 46 1 0 1 1 0 8 0 pipepl 320 120 0 92 3 0 3 3 0 8 0 fdescpl 496 601 0 569 5 0 5 5 0 8 0 filepl 152 3237 0 2980 15 0 15 15 0 8 3 lockfpl 104 182 0 179 2 0 2 2 0 8 1 lockfspl 48 91 0 88 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 37 0 20 1 0 1 1 0 8 0 ucredpl 104 518 0 503 1 0 1 1 0 8 0 zombiepl 144 570 0 569 1 0 1 1 0 8 0 processpl 1160 620 0 569 5 0 5 5 0 8 1 procpl 648 901 0 839 6 0 6 6 0 8 0 sosppl 168 2 0 0 1 0 1 1 0 8 0 sockpl 664 564 0 531 9 0 9 9 0 8 5 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 139 0 0 18 0 18 18 0 8 0 mcl2k 2048 55 0 0 7 0 7 7 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 199 0 0 13 0 13 13 0 8 0 bufpl 280 2592 0 98 179 0 179 179 0 8 0 anonpl 24 182365 0 178828 25 1 24 24 0 185 0 amapchunkpl 152 15453 0 14933 29 0 29 29 0 158 8 amappl16 200 4994 0 4972 5 3 2 5 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 127 0 114 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1255 0 1222 3 1 2 2 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 13 0 13 1 1 0 1 0 8 0 amappl9 144 157 0 157 1 1 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 112 0 99 1 0 1 1 0 8 0 amappl6 120 181 0 178 1 0 1 1 0 8 0 amappl5 112 140 0 129 1 0 1 1 0 8 0 amappl4 104 357 0 339 1 0 1 1 0 8 0 amappl3 96 2717 0 2615 3 0 3 3 0 8 0 amappl2 88 897 0 809 3 0 3 3 0 8 0 amappl1 80 8599 0 8009 14 0 14 14 0 8 0 amappl 88 4159 0 3978 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 128 255 0 255 2 1 1 1 0 8 1 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 46 0 1 1 0 1 1 0 8 0 uaddrrnd 24 601 0 569 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 601 0 569 1 0 1 1 0 8 0 vmmpekpl 168 6381 0 6344 2 0 2 2 0 8 0 vmmpepl 168 46811 0 44921 91 0 91 91 0 357 3 vmsppl 448 600 0 569 6 1 5 5 0 8 0 rwobjpl 56 20264 0 16932 49 1 48 48 0 8 0 pdppl 4096 1209 0 1138 105 30 75 85 0 8 4 pvpl 32 11822 0 0 96 0 96 96 0 265 0 pmappl 248 600 0 569 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 404 0 35 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83504ff0) 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(ffffffff8358f4c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8358f4c0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7acc922009e0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff83504ff0) 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(ffffffff8358f4c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8358f4c0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7acc922009e0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8302e260) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff800031b925d8,ffff800031b925d8,edad6d0bf78c139d) at ufs_dirbadentry VOP_LOOKUP(fffffd806bbaf128,ffff800031b92978,ffff800031b929a8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff800031b92948) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff800031b92948) at namei+0x7aa sys/kern/vfs_lookup.c:250 vn_open(ffff800031b92948,207,0) at vn_open+0x1f4 sys/kern/vfs_vnops.c:107 doopenat(ffff8000ffff22a8,ffffff9c,200000c0,206,0,ffff800031b92af0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff800031b92ba0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800031b92ba0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4f2ca8695c0, count: 5 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8302e260) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff800031b925d8,ffff800031b925d8,edad6d0bf78c139d) at ufs_dirbadentry VOP_LOOKUP(fffffd806bbaf128,ffff800031b92978,ffff800031b929a8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff800031b92948) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff800031b92948) at namei+0x7aa sys/kern/vfs_lookup.c:250 vn_open(ffff800031b92948,207,0) at vn_open+0x1f4 sys/kern/vfs_vnops.c:107 doopenat(ffff8000ffff22a8,ffffff9c,200000c0,206,0,ffff800031b92af0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff800031b92ba0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800031b92ba0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4f2ca8695c0, count: -10