kernel: protection fault trap, code=0 Stopped at witness_checkorder+0xb5: movl 0x20(%r14),%r15d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace witness_checkorder(dead4110dead4228,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(dead4110dead4218) at mtx_enter+0x4a sys/kern/kern_lock.c:260 prsignal(dead4110dead4110,14) at prsignal+0x36 sys/kern/kern_sig.c:904 reaper(ffff8000ffffd9f8) at reaper+0x2cc sys/kern/kern_exit.c:516 end trace frame: 0x0, count: -4 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a243e70 rbx 0 rdx 0 rcx 0xffff8000ffffd9f8 rax 0xffffffff837b8ffe cpu_info_full_primary+0x1ffe r8 0x2 r9 0 r10 0x1de8c2c66eff6b05 r11 0x30fb98ff0811503e r12 0xdead4110dead41fe r13 0x9 r14 0xdead4110dead4228 r15 0 rip 0xffffffff82c96385 witness_checkorder+0xb5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a243dd0 ss 0x10 witness_checkorder+0xb5: movl 0x20(%r14),%r15d ddb{0}> show proc PROC (reaper) tid=196341 pid=80349 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffffc88,0xffff8000ffffd770 process=0xffff8000ffff9ce0 user=0xffff80002a23f000, vmspace=0xffffffff838a3720 estcpu=0, cpticks=11, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 49548 120551 72933 32767 2 0x10 syz-executor 35214 26376 48043 32767 2 0x10 syz-executor 35214 421000 48043 32767 7 0x4000010 syz-executor 4629 79266 15178 32767 2 0x10 syz-executor 4629 49730 15178 32767 3 0x4000090 fsleep syz-executor 4629 249916 15178 32767 3 0x4000090 fsleep syz-executor 62989 26717 92437 0 3 0x82 sbwait sshd-session 52097 148303 99914 0 3 0x100082 sbwait arp 99914 29156 4684 0 3 0x10008a sigsusp sh 95536 495366 80257 32767 2 0x10 syz-executor 72933 45572 48008 32767 3 0x90 nanoslp syz-executor 4684 323050 91327 0 3 0x80 wait syz-executor 39409 223553 53146 32767 2 0x10 syz-executor 10268 175267 12411 32767 2 0x10 syz-executor 48043 490060 23138 32767 3 0x90 nanoslp syz-executor 26141 434821 2121 32767 3 0x90 nanoslp syz-executor 15178 94799 85604 32767 3 0x90 nanoslp syz-executor 80257 43058 90264 0 3 0x82 wait syz-executor 48008 169891 90264 0 3 0x82 wait syz-executor 91327 436050 90264 0 3 0x82 wait syz-executor 53146 428359 90264 0 3 0x82 wait syz-executor 12411 174442 90264 0 3 0x82 wait syz-executor 23138 104195 90264 0 3 0x82 wait syz-executor 2121 50506 90264 0 3 0x82 wait syz-executor 85604 307892 90264 0 3 0x82 wait syz-executor 90264 315968 97408 0 3 0x82 nanoslp syz-executor 97408 260647 7818 0 3 0x10008a sigsusp ksh 7818 187470 90868 0 3 0x98 kqread sshd-session 90868 384930 92437 0 3 0x92 kqread sshd-session 23229 35223 1 0 3 0x100083 ttyin getty 92437 420918 1 0 3 0x88 kqread sshd 70172 267258 22425 73 3 0x1100090 kqread syslogd 22425 515923 1 0 3 0x100082 sbwait syslogd 73996 113502 1 0 3 0x100080 kqread resolvd 4469 354542 48511 77 3 0x100092 kqread dhcpleased 47003 390155 48511 77 3 0x100092 kqread dhcpleased 48511 486306 1 0 3 0x80 kqread dhcpleased 18237 188291 0 0 3 0x14200 bored smr 66326 458288 0 0 3 0x14200 pgzero zerothread 55064 3885 0 0 3 0x14200 aiodoned aiodoned 17031 181366 0 0 3 0x14200 syncer update 77055 210222 0 0 3 0x14200 cleaner cleaner *80349 196341 0 0 7 0x14200 reaper 12395 171619 0 0 3 0x14200 pgdaemon pagedaemon 9214 50375 0 0 3 0x14200 bored viomb 72001 2849 0 0 3 0x40014200 acpi0 acpi0 61801 113415 0 0 3 0x40014200 idle1 5115 25227 0 0 2 0x14200 softnet1 93830 44598 0 0 2 0x14200 softnet0 53132 270353 0 0 3 0x14200 bored systqmp 64660 31067 0 0 3 0x14200 bored systq 18521 190506 0 0 3 0x14200 tmoslp softclockmp 89642 449689 0 0 3 0x40014200 tmoslp softclock 717 309717 0 0 3 0x40014200 idle0 1 424137 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 95536 (syz-executor) thread 0xffff800031fe9248 (495366) exclusive rrwlock inode r = 0 (0xfffffd806b67c460) #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:765 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c77ba10) #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:765 #9 Xsyscall+0x128 Process 39409 (syz-executor) thread 0xffff800031fe9ca8 (223553) exclusive rrwlock inode r = 0 (0xfffffd806c2af458) #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 vget+0x2a2 sys/kern/vfs_subr.c:687 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c2af8f8) #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 vget+0x2a2 sys/kern/vfs_subr.c:687 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #13 Xsyscall+0x128 Process 10268 (syz-executor) thread 0xffff8000fffeea78 (175267) exclusive rrwlock inode r = 0 (0xfffffd806b67c588) #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 vget+0x2a2 sys/kern/vfs_subr.c:687 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c77beb0) #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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #9 Xsyscall+0x128 Process 80349 (reaper) thread 0xffff8000ffffd9f8 (196341) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839e7bf0) #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 sleep_finish+0x2d8 sys/kern/kern_synch.c:367 #3 rw_do_enter_write+0x1dc sys/kern/kern_rwlock.c:298 #4 knote_processexit+0x2b sys/kern/kern_event.c:2217 #5 reaper+0x24d sys/kern/kern_exit.c:513 #6 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10190 10956K 10968K 166960K 11281 0 pcb 17 12K 12K 166960K 17 0 rtable 229 6K 6K 166960K 347 0 pf 31 16K 16K 166960K 31 0 ifaddr 40 7K 7K 166960K 42 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 36K 166960K 68 0 ioctlops 0 0K 2K 166960K 32 0 iov 0 0K 20K 166960K 20 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1368 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 11 0 dirhash 15 2K 3K 166960K 60 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 24 89K 117K 166960K 609 0 sigio 0 0K 0K 166960K 17 0 proc 58 99K 147K 166960K 499 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 44 0 in_multi 89 6K 7K 166960K 118 0 ether_multi 1 0K 0K 166960K 8 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 409 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 154K 180K 166960K 7460 0 UVM aobj 11 2K 2K 166960K 11 0 pinsyscall 48 96K 114K 166960K 1831 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 92 0 NDP 11 0K 1K 166960K 25 0 temp 39 8651K 8716K 166960K 8137 0 kqueue 14 20K 32K 166960K 124 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 45 0 41 1 0 1 1 0 8 0 rtentry 176 109 0 3 5 0 5 5 0 8 0 unpcb 144 292 0 266 3 1 2 2 0 8 1 syncache 336 43 0 42 1 0 1 1 0 8 0 tcpqe 32 10 0 10 1 0 1 1 0 8 1 tcpcb 736 246 0 228 2 0 2 2 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 ipq 40 3 0 1 1 0 1 1 0 8 0 ipqe 40 5 0 3 1 0 1 1 0 8 0 inpcb 328 558 0 534 3 0 3 3 0 8 0 nd6 152 26 0 2 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 422 0 4 27 0 27 27 0 8 0 art_table 40 423 0 4 5 0 5 5 0 8 0 art_node 32 109 0 12 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 8 0 0 1 0 1 1 0 8 0 dirhash 1024 50 0 31 3 0 3 3 0 8 0 dino2pl 256 2206 0 698 96 0 96 96 0 8 0 ffsino 296 2206 0 698 118 0 118 118 0 8 0 nchpl 144 2898 0 1218 63 0 63 63 0 8 0 vnodes 216 2287 0 0 128 0 128 128 0 8 0 namei 1024 8976 0 8975 1 0 1 1 0 8 0 percpumem 16 49 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 10009 0 10009 10 2 8 8 1 8 8 plimitpl 152 118 0 93 2 0 2 2 0 8 1 sigapl 424 931 0 878 7 0 7 7 0 8 0 knotepl 120 537 0 0 17 0 17 17 0 8 0 kqueuepl 224 131 0 119 1 0 1 1 0 8 0 pipepl 344 135 0 108 3 0 3 3 0 8 0 fdescpl 528 915 0 878 3 0 3 3 0 8 0 filepl 160 3740 0 3513 11 0 11 11 0 8 0 lockfpl 104 66 0 64 1 0 1 1 0 8 0 lockfspl 48 24 0 22 1 0 1 1 0 8 0 sessionpl 144 53 0 36 1 0 1 1 0 8 0 pgrppl 48 69 0 44 1 0 1 1 0 8 0 ucredpl 104 633 0 615 1 0 1 1 0 8 0 zombiepl 144 879 0 878 1 0 1 1 0 8 0 processpl 1232 931 0 878 5 0 5 5 0 8 0 procpl 664 1531 0 1473 6 0 6 6 0 8 0 sosppl 176 25 0 24 1 0 1 1 0 8 0 sockpl 752 896 0 842 7 1 6 6 0 8 0 mcl64k 65536 21 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 13 0 0 2 0 2 2 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 12 0 0 2 0 2 2 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 39 0 0 5 0 5 5 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 1843 0 0 116 0 116 116 0 8 0 bufpl 280 2950 0 122 202 0 202 202 0 8 0 anonpl 32 7530 0 0 61 0 61 61 0 246 0 amapchunkpl 152 23517 0 22994 33 1 32 32 0 158 7 amappl16 200 2733 0 2707 15 10 5 14 0 8 2 amappl15 192 31 0 31 1 1 0 1 0 8 0 amappl14 184 4 0 4 3 2 1 1 0 8 1 amappl13 176 404 0 402 1 0 1 1 0 8 0 amappl12 168 1343 0 1297 3 0 3 3 0 8 0 amappl11 160 9 0 9 1 1 0 1 0 8 0 amappl10 152 42 0 32 1 0 1 1 0 8 0 amappl9 144 260 0 259 1 0 1 1 0 8 0 amappl8 136 24 0 22 1 0 1 1 0 8 0 amappl7 128 77 0 76 1 0 1 1 0 8 0 amappl6 120 290 0 276 1 0 1 1 0 8 0 amappl5 112 105 0 97 1 0 1 1 0 8 0 amappl4 104 630 0 604 1 0 1 1 0 8 0 amappl3 96 3863 0 3781 3 0 3 3 0 8 0 amappl2 88 1281 0 1200 3 0 3 3 0 8 0 amappl1 80 19834 0 19170 20 2 18 19 0 8 0 amappl 88 6529 0 6362 5 0 5 5 0 92 0 uvmvnodes 80 2287 0 0 47 0 47 47 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 10 0 0 1 0 1 1 0 8 0 uaddrrnd 24 915 0 878 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 915 0 878 1 0 1 1 0 8 0 vmmpekpl 168 11416 0 11376 3 0 3 3 0 8 0 vmmpepl 168 76545 0 74451 118 4 114 116 0 357 10 vmsppl 488 914 0 878 7 1 6 6 0 8 0 rwobjpl 80 28867 0 25614 72 0 72 72 0 8 1 pdppl 4096 1838 0 1756 128 34 94 96 0 8 12 pvpl 32 16656 0 0 135 0 135 135 0 265 0 pmappl 256 914 0 878 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 410 0 37 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace witness_checkorder(dead4110dead4228,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(dead4110dead4218) at mtx_enter+0x4a sys/kern/kern_lock.c:260 prsignal(dead4110dead4110,14) at prsignal+0x36 sys/kern/kern_sig.c:904 reaper(ffff8000ffffd9f8) at reaper+0x2cc sys/kern/kern_exit.c:516 end trace frame: 0x0, count: -4 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 copyout() at copyout+0x64 syscall(ffff80003c469590) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c469590) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xffc28084cd0, count: -7