uvm_fault(0xffffffff83a5f560, 0xffff800029ee5000, 0, 1) -> e kernel: page fault trap, code=0 Stopped at pvclock_get+0x53: movl 0(%r15),%r12d TID PID UID PRFLAGS PFLAGS CPU COMMAND *190370 26934 0 0 0x4000000 0 syz-executor pvclock_get(ffffffff83945dd0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83945dd0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline] nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline] nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257 clockintr_dispatch(ffff80002a818d50) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180 lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x6f kd_claim sys/dev/kcov.c:628 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x6f sys/dev/kcov.c:157 buf_free_pages(fffffd80606cad50) at buf_free_pages+0x197 sys/kern/vfs_biomem.c:307 buf_dealloc_mem(fffffd80606cad50) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd80606cad50) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd80606cad50) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff800001600000,3,ffff80003c8e8550) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd8060705120,84946467,ffff800001600000,3,fffffd8007ffd6e8,ffff80003c8e8550) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cab00f0,84946467,ffff800001600000,ffff80003c8e8550) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 end trace frame: 0xffff80002a8192f0, count: 0 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xffffffff83a5f560, 0xffff800029ee5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff83945dd0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83945dd0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline] nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline] nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257 clockintr_dispatch(ffff80002a818d50) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180 lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x6f kd_claim sys/dev/kcov.c:628 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x6f sys/dev/kcov.c:157 buf_free_pages(fffffd80606cad50) at buf_free_pages+0x197 sys/kern/vfs_biomem.c:307 buf_dealloc_mem(fffffd80606cad50) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd80606cad50) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd80606cad50) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff800001600000,3,ffff80003c8e8550) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd8060705120,84946467,ffff800001600000,3,fffffd8007ffd6e8,ffff80003c8e8550) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cab00f0,84946467,ffff800001600000,ffff80003c8e8550) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003c8e8550,ffff80002a8193c0,ffff80002a819310) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80002a8193c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8193c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81959527660, count: -17 ddb> show registers rdi 0xffffffff rsi 0xd rbp 0xffff80002a818c40 rbx 0x3 rdx 0xffff8000015bab00 rcx 0 rax 0xc r8 0 r9 0 r10 0 r11 0x86e7ebc25e41be41 r12 0x12ac __ALIGN_SIZE+0x2ac r13 0xffffffff838edbc8 th1 r14 0xffffffff83945dd0 pvclock_timecounter r15 0xffff800029ee5000 rip 0xffffffff827acb93 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a818bf0 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=190370 pid=26934 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=63, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c8e87e8,0xffff80003c8e9258 process=0xffff80002a744488 user=0xffff80002a814000, vmspace=0xfffffd807e9dc2f8 estcpu=13, cpticks=113, pctcpu=1.13, user=0, sys=113, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 26934 182595 138 0 2 0 syz-executor *26934 190370 138 0 7 0x4000000 syz-executor 26934 82651 138 0 3 0x4000080 fsleep syz-executor 46034 456953 65902 0 2 0xc80 syz-executor 46034 233476 65902 0 2 0x4000c80 syz-executor 46034 98373 65902 0 3 0x4000080 fsleep syz-executor 62144 441603 80601 0 3 0x82 piperd syz-executor 28388 514144 80601 0 3 0x82 piperd syz-executor 8441 241150 80601 0 3 0x82 piperd syz-executor 32405 19624 80601 0 3 0x82 piperd syz-executor 68583 179941 80601 0 3 0x82 piperd syz-executor 138 207821 80601 0 2 0xc82 syz-executor 65902 151193 80601 0 2 0xc82 syz-executor 80601 364005 43497 0 3 0x82 nanoslp syz-executor 43497 241178 60158 0 3 0x10008a sigsusp ksh 60158 12520 48032 0 3 0x98 kqread sshd-session 48032 395635 32431 0 3 0x92 kqread sshd-session 54514 514051 1 0 3 0x100083 ttyin getty 32431 383430 1 0 3 0x88 kqread sshd 41412 325669 3587 73 3 0x1100090 kqread syslogd 3587 324410 1 0 3 0x100082 sbwait syslogd 38384 33691 1 0 3 0x100080 kqread resolvd 50776 493492 21546 77 3 0x100092 kqread dhcpleased 82934 354477 21546 77 3 0x100092 kqread dhcpleased 21546 447935 1 0 3 0x80 kqread dhcpleased 35071 327414 0 0 3 0x14200 bored smr 67616 436616 0 0 2 0x14200 zerothread 11613 524044 0 0 3 0x14200 aiodoned aiodoned 19435 208232 0 0 2 0x14e00 update 77730 78603 0 0 3 0x14200 cleaner cleaner 12277 346455 0 0 3 0x14200 reaper reaper 48042 49584 0 0 3 0x14200 pgdaemon pagedaemon 24074 466531 0 0 3 0x14200 bored viomb 22963 233672 0 0 3 0x40014200 acpi0 acpi0 24730 420139 0 0 3 0x14200 bored softnet0 71252 8765 0 0 3 0x14200 bored systqmp 13530 441507 0 0 3 0x14200 bored systq 51656 334915 0 0 2 0x40014200 softclock 24855 235139 0 0 3 0x40014200 idle0 1 339819 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11026 12098K 12452K 166960K 12412 0 pcb 17 14K 15K 166960K 80 0 rtable 177 5K 7K 166960K 515 0 pf 25 12K 17K 166960K 53 0 ifaddr 30 5K 8K 166960K 56 0 ifgroup 38 1K 2K 166960K 68 0 sysctl 3 1K 9K 166960K 9 0 counters 30 17K 17K 166960K 39 0 ioctlops 1 2K 4K 166960K 57 0 iov 0 0K 8K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1303 82K 82K 166960K 1805 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 28 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 11 37K 93K 166960K 453 0 sigio 0 0K 0K 166960K 2 0 proc 60 59K 83K 166960K 557 0 subproc 63 3K 5K 166960K 243 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 67 0 in_multi 62 4K 7K 166960K 128 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 14 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 551 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 169 133K 165K 166960K 5303 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 32 64K 94K 166960K 1563 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 9 0 NDP 8 0K 2K 166960K 35 0 temp 39 9103K 9167K 166960K 11551 0 kqueue 13 20K 28K 166960K 78 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 54 0 51 1 0 1 1 0 8 0 rtentry 136 173 0 98 5 0 5 5 0 8 0 unpcb 144 158 0 143 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 76 0 72 1 0 1 1 0 8 0 arp 96 23 0 10 1 0 1 1 0 8 0 ipq 40 5 0 1 1 0 1 1 0 8 0 ipqe 40 7 0 3 1 0 1 1 0 8 0 inpcb 328 397 0 390 7 0 7 7 0 8 6 ip6q 72 2 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 112 34 0 20 1 0 1 1 0 8 0 kcovpl 48 27 0 20 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 3 0 3 1 0 1 1 0 8 1 pfrktable 1344 2 0 2 1 0 1 1 0 8 1 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 2 1 0 1 1 0 8 1 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 2 0 0 1 0 1 1 0 8 0 pfstate 384 1 0 0 1 0 1 1 0 8 0 pfrule 1360 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 556 0 249 32 3 29 32 0 8 8 art_table 40 558 0 249 6 0 6 6 0 8 1 art_node 32 140 0 72 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 64 21 0 11 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2182 0 710 93 0 93 93 0 8 0 ffsino 256 2182 0 710 93 0 93 93 0 8 0 nchpl 144 2758 0 1053 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 2513 0 0 140 0 140 140 0 8 0 namei 1024 9065 0 9065 2 0 2 2 0 8 2 kstatmem 264 33 0 16 2 0 2 2 0 8 0 scxspl 216 15526 0 15526 8 0 8 8 1 8 8 plimitpl 152 181 0 165 1 0 1 1 0 8 0 sigapl 424 706 0 670 6 0 6 6 0 8 1 knotepl 120 11793 0 11746 11 1 10 11 0 8 8 kqueuepl 184 135 0 125 2 0 2 2 0 8 1 pipepl 304 189 0 162 3 0 3 3 0 8 0 fdescpl 448 693 0 670 5 0 5 5 0 8 1 filepl 120 3606 0 3413 10 0 10 10 0 8 3 lockfpl 104 125 0 123 1 0 1 1 0 8 0 lockfspl 48 50 0 48 1 0 1 1 0 8 0 sessionpl 144 48 0 40 1 0 1 1 0 8 0 pgrppl 48 110 0 95 1 0 1 1 0 8 0 ucredpl 104 604 0 593 1 0 1 1 0 8 0 zombiepl 144 670 0 670 1 0 1 1 0 8 1 processpl 1152 706 0 670 4 0 4 4 0 8 1 procpl 664 1076 0 1036 6 0 6 6 0 8 2 sockpl 552 626 0 601 7 0 7 7 0 8 5 mcl64k 65536 8 0 8 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 10 0 10 1 0 1 1 0 8 1 mcl4k 4096 2851 0 2788 15 0 15 15 0 8 6 mcl2k 2048 374 0 373 2 0 2 2 0 8 1 mtagpl 96 9 0 9 1 0 1 1 0 8 1 mbufpl 256 6939 0 6784 19 0 19 19 0 8 6 bufpl 280 6122 0 102 430 0 430 430 0 8 0 anonpl 24 134506 0 131481 82 0 82 82 0 186 44 amapchunkpl 152 16957 0 16649 31 0 31 31 0 158 18 amappl16 200 2536 0 2495 27 12 15 27 0 8 8 amappl15 192 50 0 50 1 0 1 1 0 8 1 amappl14 184 419 0 418 1 0 1 1 0 8 0 amappl13 176 110 0 100 1 0 1 1 0 8 0 amappl12 168 949 0 927 2 0 2 2 0 8 0 amappl11 160 8 0 8 1 0 1 1 0 8 1 amappl10 152 63 0 53 1 0 1 1 0 8 0 amappl9 144 262 0 262 1 0 1 1 0 8 1 amappl8 136 124 0 123 1 0 1 1 0 8 0 amappl7 128 142 0 130 1 0 1 1 0 8 0 amappl6 120 159 0 158 1 0 1 1 0 8 0 amappl5 112 87 0 79 1 0 1 1 0 8 0 amappl4 104 266 0 249 1 0 1 1 0 8 0 amappl3 96 3148 0 3075 4 0 4 4 0 8 0 amappl2 88 508 0 454 2 0 2 2 0 8 0 amappl1 80 10269 0 9739 13 0 13 13 0 8 1 amappl 88 4539 0 4430 5 0 5 5 0 92 1 uvmvnodes 80 111 0 0 3 0 3 3 0 8 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 693 0 670 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 693 0 670 1 0 1 1 0 8 0 vmmpekpl 168 7311 0 7272 2 0 2 2 0 8 0 vmmpepl 168 51903 0 50409 103 0 103 103 0 357 30 vmsppl 368 692 0 670 4 0 4 4 0 8 1 rwobjpl 40 16794 0 15887 15 0 15 15 0 8 0 pdppl 4096 1392 0 1340 110 50 60 80 0 8 8 pvpl 32 330014 0 322135 161 0 161 161 0 265 66 pmappl 216 692 0 670 3 0 3 3 0 8 1 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 391 0 53 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff83945dd0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83945dd0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline] nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline] nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257 clockintr_dispatch(ffff80002a818d50) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180 lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x6f kd_claim sys/dev/kcov.c:628 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x6f sys/dev/kcov.c:157 buf_free_pages(fffffd80606cad50) at buf_free_pages+0x197 sys/kern/vfs_biomem.c:307 buf_dealloc_mem(fffffd80606cad50) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd80606cad50) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd80606cad50) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff800001600000,3,ffff80003c8e8550) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd8060705120,84946467,ffff800001600000,3,fffffd8007ffd6e8,ffff80003c8e8550) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cab00f0,84946467,ffff800001600000,ffff80003c8e8550) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003c8e8550,ffff80002a8193c0,ffff80002a819310) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80002a8193c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8193c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81959527660, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff83945dd0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83945dd0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline] nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline] nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257 clockintr_dispatch(ffff80002a818d50) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180 lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x6f kd_claim sys/dev/kcov.c:628 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x6f sys/dev/kcov.c:157 buf_free_pages(fffffd80606cad50) at buf_free_pages+0x197 sys/kern/vfs_biomem.c:307 buf_dealloc_mem(fffffd80606cad50) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd80606cad50) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd80606cad50) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff800001600000,3,ffff80003c8e8550) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd8060705120,84946467,ffff800001600000,3,fffffd8007ffd6e8,ffff80003c8e8550) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cab00f0,84946467,ffff800001600000,ffff80003c8e8550) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003c8e8550,ffff80002a8193c0,ffff80002a819310) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80002a8193c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8193c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81959527660, count: -17