login: panic: kernel diagnostic assertion "(key.from) > 0 && (key.from) <= w_max_used_index && (key.from) < witness_count" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/subr_witness.c", line 2446 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 522409 25718 0 0 0 1 syz-executor.1 *470861 93450 0 0x2 0 0K syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823c0150) at panic+0x15e sys/kern/subr_prf.c:218 __assert(ffffffff8242f13f,ffffffff82414f7c,98e,ffffffff823b3d8d) at __assert+0x2b sys/kern/subr_prf.c:162 witness_checkorder(ffffffff8277f738,9,0) at witness_checkorder+0x1112 find_instance sys/kern/subr_witness.c:1840 [inline] witness_checkorder(ffffffff8277f738,9,0) at witness_checkorder+0x1112 sys/kern/subr_witness.c:837 mtx_enter(ffffffff8277f728) at mtx_enter+0x3a sys/kern/kern_lock.c:265 vm_map_lock_ln(ffffffff8277f6f0,ffffffff823e4471,135) at vm_map_lock_ln+0x118 sys/uvm/uvm_map.c:5461 malloc(e10,27,9) at malloc+0x739 sys/kern/kern_malloc.c:310 fdcopy(ffff800020ecebd8) at fdcopy+0x207 sys/kern/kern_descrip.c:1138 process_new(ffff800020ea78c8,ffff800020ecebd8,1) at process_new+0x12c sys/kern/kern_fork.c:253 fork1(ffff800020ea6c70,1,ffffffff813ce540,0,ffff800024176e80,0) at fork1+0x313 sys/kern/kern_fork.c:377 syscall(ffff800024176f00) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024176f00) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda4c0, count: 3 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel diagnostic assertion "(key.from) > 0 && (key.from) <= w_max_used_index && (key.from) < witness_count" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/subr_witness.c", line 2446 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823c0150) at panic+0x15e sys/kern/subr_prf.c:218 __assert(ffffffff8242f13f,ffffffff82414f7c,98e,ffffffff823b3d8d) at __assert+0x2b sys/kern/subr_prf.c:162 witness_checkorder(ffffffff8277f738,9,0) at witness_checkorder+0x1112 find_instance sys/kern/subr_witness.c:1840 [inline] witness_checkorder(ffffffff8277f738,9,0) at witness_checkorder+0x1112 sys/kern/subr_witness.c:837 mtx_enter(ffffffff8277f728) at mtx_enter+0x3a sys/kern/kern_lock.c:265 vm_map_lock_ln(ffffffff8277f6f0,ffffffff823e4471,135) at vm_map_lock_ln+0x118 sys/uvm/uvm_map.c:5461 malloc(e10,27,9) at malloc+0x739 sys/kern/kern_malloc.c:310 fdcopy(ffff800020ecebd8) at fdcopy+0x207 sys/kern/kern_descrip.c:1138 process_new(ffff800020ea78c8,ffff800020ecebd8,1) at process_new+0x12c sys/kern/kern_fork.c:253 fork1(ffff800020ea6c70,1,ffffffff813ce540,0,ffff800024176e80,0) at fork1+0x313 sys/kern/kern_fork.c:377 syscall(ffff800024176f00) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024176f00) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda4c0, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000241769b0 rbx 0xffff8000241769c0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffff800024176970 r9 0xffffffff8106d396 kprintf+0x146 r10 0x1 r11 0xec91c6e45e1a2564 r12 0x3000000008 r13 0xffff800024176a60 r14 0x100 r15 0x1 rip 0xffffffff819987f8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000241769a0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=470861 stat=onproc flags process=2 proc=0 pri=79, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800020ea7160,0xffff800020ea7b50 process=0xffff800020ecebd8 user=0xffff800024171000, vmspace=0xfffffd806a505198 estcpu=36, cpticks=0, pctcpu=0.48 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 25718 522409 21136 0 7 0 syz-executor.1 25718 194565 21136 0 3 0x4000080 netcon2 syz-executor.1 21136 345212 17830 0 3 0x82 nanosleep syz-executor.1 *93450 470861 17830 0 7 0x2 syz-executor.0 97264 83554 1 0 3 0x100083 ttyin getty 18090 465666 0 0 3 0x14200 bored sosplice 17830 312135 22311 0 3 0x82 thrsleep syz-fuzzer 17830 140533 22311 0 3 0x4000082 nanosleep syz-fuzzer 17830 74337 22311 0 3 0x4000082 thrsleep syz-fuzzer 17830 297271 22311 0 3 0x4000082 thrsleep syz-fuzzer 17830 510 22311 0 3 0x4000082 kqread syz-fuzzer 17830 455875 22311 0 3 0x4000082 nanosleep syz-fuzzer 17830 218344 22311 0 3 0x4000082 thrsleep syz-fuzzer 17830 290665 22311 0 3 0x4000082 thrsleep syz-fuzzer 22311 294125 36105 0 3 0x10008a pause ksh 36105 214513 76119 0 3 0x92 select sshd 76119 368103 1 0 3 0x80 select sshd 53539 353972 5489 74 3 0x100092 bpf pflogd 5489 70072 1 0 3 0x80 netio pflogd 70370 152894 78249 73 3 0x100090 kqread syslogd 78249 464849 1 0 3 0x100082 netio syslogd 29227 306214 1 77 3 0x100090 poll dhclient 55632 72679 1 0 3 0x80 poll dhclient 29765 259784 0 0 3 0x14200 bored smr 25594 184168 0 0 3 0x14200 pgzero zerothread 51459 191433 0 0 3 0x14200 aiodoned aiodoned 11294 814 0 0 3 0x14200 syncer update 68467 134604 0 0 3 0x14200 cleaner cleaner 16610 183162 0 0 3 0x14200 reaper reaper 36826 499118 0 0 3 0x14200 pgdaemon pagedaemon 82753 417911 0 0 3 0x14200 bored crynlk 93569 337356 0 0 3 0x14200 bored crypto 36618 189028 0 0 3 0x40014200 acpi0 acpi0 3572 487446 0 0 3 0x40014200 idle1 32663 507102 0 0 3 0x14200 bored softnet 17984 415071 0 0 3 0x14200 bored systqmp 88650 258919 0 0 3 0x14200 bored systq 72686 219382 0 0 3 0x40014200 bored softclock 76944 451641 0 0 3 0x40014200 idle0 1 325586 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:104 r = 0 (0xffffffff826c5c30) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 malloc+0x23b sys/kern/kern_malloc.c:209 #4 fdcopy+0x207 sys/kern/kern_descrip.c:1138 #5 process_new+0x12c sys/kern/kern_fork.c:253 #6 fork1+0x313 sys/kern/kern_fork.c:377 #7 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 #8 Xsyscall+0x128 Process 93450 (syz-executor.0) thread 0xffff800020ea6c70 (470861) exclusive rwlock fdlock r = 0 (0xfffffd8072c5da18) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 fdcopy+0x137 sys/kern/kern_descrip.c:1114 #2 process_new+0x12c sys/kern/kern_fork.c:253 #3 fork1+0x313 sys/kern/kern_fork.c:377 #4 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828a2688) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x3fd sys/arch/amd64/amd64/trap.c:568 #2 Xsyscall+0x128 exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:104 r = 0 (0xffffffff826c5c30) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 malloc+0x23b sys/kern/kern_malloc.c:209 #4 fdcopy+0x207 sys/kern/kern_descrip.c:1138 #5 process_new+0x12c sys/kern/kern_fork.c:253 #6 fork1+0x313 sys/kern/kern_fork.c:377 #7 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 #8 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9543 6447K 7696K 78643K 20342 0 pcb 13 8K 8K 78643K 451 0 rtable 118 6K 7K 78643K 1614 0 ifaddr 88 17K 18K 78643K 588 0 counters 43 33K 34K 78643K 201 0 ioctlops 0 0K 4K 78643K 2011 0 iov 0 0K 24K 78643K 384 0 mount 1 1K 1K 78643K 1 0 vnodes 1226 77K 77K 78643K 4345 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 60 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1091 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 17K 25K 78643K 9270 0 sigio 0 0K 0K 78643K 106 0 proc 65 63K 95K 78643K 1061 0 subproc 32 2K 2K 78643K 136 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 640 0 in_multi 29 1K 2K 78643K 434 0 ether_multi 1 0K 0K 78643K 59 0 mrt 0 0K 0K 78643K 57 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 2K 78643K 840 0 pfkey data 0 0K 0K 78643K 2 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 271 318K 319K 78643K 23248 0 UVM aobj 129 8K 8K 78643K 129 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 336 0 NDP 15 0K 0K 78643K 124 0 temp 151 3980K 4060K 78643K 41668 0 kqueue 3 4K 22K 78643K 398 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 19 0 13 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 96 317 0 315 1 0 1 1 0 8 0 rtentry 112 195 0 154 2 0 2 2 0 8 0 unpcb 120 1911 0 1893 2 1 1 2 0 8 0 syncache 272 55 0 55 11 10 1 1 0 8 1 tcpqe 32 35 0 35 5 5 0 1 0 8 0 tcpcb 592 1470 0 1463 20 18 2 5 0 8 0 inpcb 296 4184 0 4168 13 11 2 3 0 8 0 rttmr 72 14 0 14 1 1 0 1 0 8 0 nd6 48 62 0 58 1 0 1 1 0 8 0 pkpcb 40 47 0 47 9 9 0 1 0 8 0 kcovpl 48 8 0 6 1 0 1 1 0 8 0 ppxss 1128 9 0 9 3 3 0 1 0 8 0 pfstscr 40 21 0 21 3 3 0 1 0 8 0 pffrag 232 24 0 22 4 3 1 1 0 482 0 pffrnode 88 24 0 22 4 3 1 1 0 8 0 pffrent 40 493 0 491 6 5 1 1 0 8 0 pfosfp 40 858 0 423 5 0 5 5 0 8 0 pfosfpen 112 1443 0 714 21 0 21 21 0 8 0 pfrktable 1344 165 0 161 2 1 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 81 0 78 1 0 1 1 0 8 0 pfstkey 112 117 0 114 2 0 2 2 0 8 0 pfstate 328 97 0 94 5 3 2 5 0 8 0 pfrule 1360 118 0 88 4 1 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 592 0 416 16 3 13 13 0 8 0 art_table 32 593 0 416 2 0 2 2 0 8 0 art_node 16 186 0 148 1 0 1 1 0 8 0 sysvmsgpl 40 45 0 16 1 0 1 1 0 8 0 semapl 112 1089 0 1079 1 0 1 1 0 8 0 shmpl 112 126 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12805 0 11379 91 1 90 90 0 8 0 ffsino 272 12805 0 11379 97 1 96 96 0 8 0 nchpl 144 24130 0 22538 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 61479 0 61479 3 2 1 1 0 8 1 percpumem 16 111 0 79 1 0 1 1 0 8 0 vcpupl 1984 32 0 0 4 0 4 4 0 8 0 vmpool 560 41 0 9 3 0 3 3 0 8 0 pfiaddrpl 120 61 0 56 3 2 1 1 0 8 0 scxspl 200 76077 0 76077 19 18 1 7 0 8 1 plimitpl 152 445 0 437 1 0 1 1 0 8 0 sigapl 424 9470 0 9438 4 0 4 4 0 8 0 futexpl 56 73011 0 73011 3 2 1 1 0 8 1 knotepl 112 668 0 648 2 1 1 2 0 8 0 kqueuepl 152 5998 0 5979 2 0 2 2 0 8 1 pipepl 304 543 0 532 16 14 2 2 0 8 1 fdescpl 496 9455 0 9438 3 0 3 3 0 8 0 filepl 152 35107 0 35004 6 1 5 6 0 8 1 lockfpl 104 1192 0 1191 1 0 1 1 0 8 0 lockfspl 48 477 0 476 1 0 1 1 0 8 0 sessionpl 120 26 0 15 1 0 1 1 0 8 0 pgrppl 48 37 0 26 1 0 1 1 0 8 0 ucredpl 96 4921 0 4909 1 0 1 1 0 8 0 zombiepl 144 9438 0 9438 2 1 1 1 0 8 1 processpl 1008 9471 0 9438 5 0 5 5 0 8 0 procpl 632 21632 0 21591 4 0 4 4 0 8 0 sosppl 144 86 0 86 11 10 1 1 0 8 1 sockpl 400 6472 0 6426 18 12 6 7 0 8 0 mcl64k 65536 269 0 0 34 16 18 34 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 15 0 0 2 0 2 2 0 8 0 mcl8k 8192 34 0 0 5 3 2 3 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 331 0 0 16 0 16 16 0 8 0 mtagpl 96 447 0 0 11 0 11 11 0 8 0 mbufpl 256 1153 0 0 64 0 64 64 0 8 0 bufpl 280 19821 0 13548 449 0 449 449 0 8 0 anonpl 16 833271 0 819886 132 74 58 65 0 124 3 amapchunkpl 152 44563 0 44262 49 32 17 25 0 158 4 amappl16 192 31930 0 31387 89 60 29 36 0 8 1 amappl15 184 2312 0 2310 1 0 1 1 0 8 0 amappl14 176 338 0 333 1 0 1 1 0 8 0 amappl13 168 315 0 313 1 0 1 1 0 8 0 amappl12 160 2104 0 2097 1 0 1 1 0 8 0 amappl11 152 3830 0 3815 1 0 1 1 0 8 0 amappl10 144 247 0 239 1 0 1 1 0 8 0 amappl9 136 644 0 643 2 1 1 1 0 8 0 amappl8 128 785 0 647 7 2 5 5 0 8 0 amappl7 120 560 0 548 1 0 1 1 0 8 0 amappl6 112 3905 0 3884 1 0 1 1 0 8 0 amappl5 104 7901 0 7889 1 0 1 1 0 8 0 amappl4 96 4358 0 4323 1 0 1 1 0 8 0 amappl3 88 589 0 584 1 0 1 1 0 8 0 amappl2 80 68116 0 68036 3 1 2 3 0 8 0 amappl1 72 262497 0 262027 23 13 10 19 0 8 0 amappl 80 22128 0 22035 3 0 3 3 0 84 0 dma4096 4096 1 0 1 1 1 0 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 64 128 0 0 3 0 3 3 0 8 0 uaddrrnd 24 9495 0 9447 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9495 0 9447 1 0 1 1 0 8 0 vmmpekpl 168 39784 0 39734 4 1 3 3 0 8 0 vmmpepl 168 1168188 0 1166226 165 65 100 102 0 357 11 vmsppl 368 9494 0 9447 6 1 5 5 0 8 0 pdppl 4096 18997 0 18926 12 2 10 10 0 8 1 pvpl 32 3504382 0 3490804 304 177 127 139 0 265 17 pmappl 232 9494 0 9447 4 1 3 3 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 387 0 54 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823c0150) at panic+0x15e sys/kern/subr_prf.c:218 __assert(ffffffff8242f13f,ffffffff82414f7c,98e,ffffffff823b3d8d) at __assert+0x2b sys/kern/subr_prf.c:162 witness_checkorder(ffffffff8277f738,9,0) at witness_checkorder+0x1112 find_instance sys/kern/subr_witness.c:1840 [inline] witness_checkorder(ffffffff8277f738,9,0) at witness_checkorder+0x1112 sys/kern/subr_witness.c:837 mtx_enter(ffffffff8277f728) at mtx_enter+0x3a sys/kern/kern_lock.c:265 vm_map_lock_ln(ffffffff8277f6f0,ffffffff823e4471,135) at vm_map_lock_ln+0x118 sys/uvm/uvm_map.c:5461 malloc(e10,27,9) at malloc+0x739 sys/kern/kern_malloc.c:310 fdcopy(ffff800020ecebd8) at fdcopy+0x207 sys/kern/kern_descrip.c:1138 process_new(ffff800020ea78c8,ffff800020ecebd8,1) at process_new+0x12c sys/kern/kern_fork.c:253 fork1(ffff800020ea6c70,1,ffffffff813ce540,0,ffff800024176e80,0) at fork1+0x313 sys/kern/kern_fork.c:377 syscall(ffff800024176f00) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024176f00) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda4c0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d80ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828a2480) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828a2480) at __mp_lock+0x129 sys/kern/kern_lock.c:147 syscall(ffff800022b02250) at syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800022b02250) at syscall+0x3fd sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe89a0, count: 9 ddb{1}> trace x86_ipi_db(ffff800020d80ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828a2480) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828a2480) at __mp_lock+0x129 sys/kern/kern_lock.c:147 syscall(ffff800022b02250) at syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800022b02250) at syscall+0x3fd sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe89a0, count: -6