panic: mtx 0xffffffff839f7e00: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 84928 51114 32767 0x10 0x4000000 1 syz-executor *289730 9675 32767 0x10 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833df6d5) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839f7e00) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff839f7e00) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80092e3860) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80092e3860) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80092e3860) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806a9c3230,0,ffff80003a432e88,ffff80003a432e64,0,2,d4b42fa61ab77d8a,ffff80003a4330e0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003a4330a8,ffff80003a4330e0,ffff80003a432f10,ffff80003a432f18) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003a4330a8,ffff80003a4330e0,ffff80003a433020) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806c1e4030,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003a433230,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003a433230) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x771f9075f120, count: 2 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 *cpu0: mtx 0xffffffff839f7e00: locking against myself ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833df6d5) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839f7e00) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff839f7e00) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80092e3860) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80092e3860) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80092e3860) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806a9c3230,0,ffff80003a432e88,ffff80003a432e64,0,2,d4b42fa61ab77d8a,ffff80003a4330e0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003a4330a8,ffff80003a4330e0,ffff80003a432f10,ffff80003a432f18) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003a4330a8,ffff80003a4330e0,ffff80003a433020) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806c1e4030,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003a433230,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003a433230) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x771f9075f120, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003a432bd0 rbx 0xffffffff838acdcf cpu_info_full_primary+0x2dcf rdx 0 rcx 0xffff80003981d9d0 rax 0xffffffff838abff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe1775ec4384c30e7 r11 0x77a32c7f98a13e4c r12 0xffffffff838acbd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff8136eaf5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003a432bc0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=289730 pid=9675 tcnt=4 stat=onproc flags process=10 proc=0 runpri=50, usrpri=50, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003981cf90,0xffff80003981c7f0 process=0xffff8000384192c0 user=0xffff80003a42e000, vmspace=0xfffffd806c1e4030 estcpu=36, cpticks=2, pctcpu=0.0, user=1, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 55768 225475 16018 0 2 0 syz-executor 59593 33254 82491 32767 2 0x10 syz-executor 51114 183426 45134 32767 2 0x10 syz-executor 51114 84928 45134 32767 7 0x4000010 syz-executor 81479 116392 12697 0 2 0x2 syz-executor 26474 336606 39883 32767 2 0x10 syz-executor 26474 116056 39883 32767 2 0x4000010 syz-executor * 9675 289730 56418 32767 7 0x10 syz-executor 9675 169300 56418 32767 3 0x4000090 fsleep syz-executor 9675 137404 56418 32767 3 0x4000090 fsleep syz-executor 9675 328211 56418 32767 3 0x4000090 fsleep syz-executor 16018 232189 12697 0 3 0x82 wait syz-executor 15944 444041 44042 32767 3 0x90 nanoslp syz-executor 45134 114701 57653 32767 3 0x90 nanoslp syz-executor 39883 135926 39662 32767 3 0x90 nanoslp syz-executor 82491 310564 80153 32767 3 0x90 nanoslp syz-executor 11888 222028 3272 32767 2 0x10 syz-executor 56418 106451 84596 32767 3 0x90 nanoslp syz-executor 57653 105028 12697 0 3 0x82 wait syz-executor 44042 106175 12697 0 3 0x82 wait syz-executor 80153 208498 12697 0 3 0x82 wait syz-executor 39662 151752 12697 0 3 0x82 wait syz-executor 84596 318087 12697 0 3 0x82 wait syz-executor 3272 298949 12697 0 3 0x82 wait syz-executor 12697 509496 31203 0 3 0x82 kqread syz-executor 31203 401504 79707 0 3 0x10008a sigsusp ksh 79707 11797 4675 0 3 0x98 kqread sshd-session 4675 78492 98796 0 3 0x92 kqread sshd-session 79131 218330 1 0 3 0x100083 ttyin getty 98796 476065 1 0 3 0x88 kqread sshd 24423 248529 26277 73 3 0x1100090 kqread syslogd 26277 334469 1 0 3 0x100082 sbwait syslogd 30421 415942 1 0 3 0x100080 kqread resolvd 94944 71081 49156 77 3 0x100092 kqread dhcpleased 91869 277167 49156 77 3 0x100092 kqread dhcpleased 49156 364047 1 0 3 0x80 kqread dhcpleased 35564 89998 0 0 3 0x14200 bored smr 67949 236638 0 0 2 0x14200 zerothread 88768 242582 0 0 3 0x14200 aiodoned aiodoned 7130 12150 0 0 3 0x14200 syncer update 20178 212781 0 0 3 0x14200 cleaner cleaner 11781 105773 0 0 3 0x14200 reaper reaper 11438 287396 0 0 3 0x14200 pgdaemon pagedaemon 70162 311356 0 0 3 0x14200 bored viomb 62193 461242 0 0 3 0x40014200 acpi0 acpi0 14762 293718 0 0 3 0x40014200 idle1 12218 233669 0 0 3 0x14200 bored softnet3 39908 452218 0 0 3 0x14200 bored softnet2 2044 61005 0 0 3 0x14200 bored softnet1 63912 348757 0 0 3 0x14200 bored softnet0 13567 368499 0 0 3 0x14200 bored systqmp 85927 274293 0 0 3 0x14200 bored systq 33774 273208 0 0 3 0x14200 tmoslp softclockmp 92346 499440 0 0 3 0x40014200 tmoslp softclock 2958 405561 0 0 3 0x40014200 idle0 1 27257 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff839f7e10) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 9675 (syz-executor) thread 0xffff80003981d9d0 (289730) exclusive rwlock uobjlk r = 0 (0xfffffd806c215410) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 uvn_io+0x667 sys/uvm/uvm_vnode.c:1297 #3 uvn_get+0x31d sys/uvm/uvm_vnode.c:1102 #4 uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff839f7e10) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10178 10949K 10965K 166960K 11261 0 pcb 17 12K 12K 166960K 17 0 rtable 192 5K 6K 166960K 347 0 pf 27 16K 16K 166960K 31 0 ifaddr 34 6K 7K 166960K 44 0 ifgroup 42 1K 2K 166960K 50 0 sysctl 3 1K 1K 166960K 3 0 counters 60 35K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 31 0 iov 0 0K 8K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1405 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 7 0K 0K 166960K 11 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 23 85K 121K 166960K 247 0 sigio 0 0K 0K 166960K 4 0 proc 58 79K 115K 166960K 489 0 subproc 65 4K 4K 166960K 119 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 17 0 in_multi 77 5K 7K 166960K 101 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 351 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 230 168K 186K 166960K 3592 0 UVM aobj 6 6K 6K 166960K 6 0 pinsyscall 44 88K 112K 166960K 1242 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 8 0 NDP 9 0K 2K 166960K 27 0 temp 38 8679K 8743K 166960K 4075 0 kqueue 13 20K 22K 166960K 36 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 42 0 39 1 0 1 1 0 8 0 rtentry 176 112 0 23 6 0 6 6 0 8 0 unpcb 144 204 0 189 6 0 6 6 0 8 5 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 36 0 32 1 0 1 1 0 8 0 arp 128 18 0 4 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 384 130 0 122 2 0 2 2 0 8 1 nd6 144 25 0 6 1 0 1 1 0 8 0 kcovpl 48 13 0 6 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 455 0 88 29 0 29 29 0 8 2 art_table 32 456 0 88 4 0 4 4 0 8 0 art_node 16 111 0 30 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semapl 112 6 0 1 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1659 0 146 95 0 95 95 0 8 0 ffsino 288 1659 0 146 109 0 109 109 0 8 0 nchpl 144 1953 0 269 63 0 63 63 0 8 0 uvmvnodes 80 1787 0 0 37 0 37 37 0 8 0 vnodes 216 1787 0 0 100 0 100 100 0 8 0 namei 1024 5846 0 5846 1 0 1 1 0 8 1 percpumem 16 47 0 2 1 0 1 1 0 8 0 kstatmem 264 22 0 4 2 0 2 2 0 8 0 scxspl 216 6557 0 6557 9 1 8 8 1 8 8 plimitpl 152 63 0 41 2 0 2 2 0 8 1 sigapl 424 506 0 453 7 0 7 7 0 8 0 futexpl 64 1114 0 1111 1 0 1 1 0 8 0 knotepl 120 305 0 0 10 0 10 10 0 8 0 kqueuepl 224 38 0 29 1 0 1 1 0 8 0 pipepl 336 122 0 95 3 0 3 3 0 8 0 fdescpl 520 488 0 453 3 0 3 3 0 8 0 filepl 160 1992 0 1791 15 0 15 15 0 8 5 lockfpl 104 37 0 33 1 0 1 1 0 8 0 lockfspl 48 17 0 13 1 0 1 1 0 8 0 sessionpl 144 25 0 11 1 0 1 1 0 8 0 pgrppl 48 39 0 17 1 0 1 1 0 8 0 ucredpl 104 183 0 166 1 0 1 1 0 8 0 zombiepl 144 455 0 453 1 0 1 1 0 8 0 processpl 1192 506 0 453 5 0 5 5 0 8 0 procpl 656 653 0 595 7 0 7 7 0 8 0 sockpl 728 376 0 350 15 4 11 15 0 8 8 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k 2048 17 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 211 0 0 14 0 14 14 0 8 0 bufpl 280 2333 0 116 159 0 159 159 0 8 0 anonpl 32 7417 0 0 60 0 60 60 0 246 0 amapchunkpl 152 10817 0 10271 34 0 34 34 0 158 9 amappl16 200 1827 0 1811 5 0 5 5 0 8 3 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 101 0 91 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 1091 0 1058 2 0 2 2 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 24 0 23 1 0 1 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 56 0 54 1 0 1 1 0 8 0 amappl7 128 106 0 96 1 0 1 1 0 8 0 amappl6 120 183 0 180 1 0 1 1 0 8 0 amappl5 112 110 0 104 1 0 1 1 0 8 0 amappl4 104 274 0 258 1 0 1 1 0 8 0 amappl3 96 1729 0 1617 4 0 4 4 0 8 0 amappl2 88 605 0 551 2 0 2 2 0 8 0 amappl1 80 8100 0 7539 14 0 14 14 0 8 1 amappl 88 2954 0 2790 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 128 253 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 488 0 453 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 488 0 453 1 0 1 1 0 8 0 vmmpekpl 168 5498 0 5456 3 0 3 3 0 8 0 vmmpepl 168 37171 0 35187 95 0 95 95 0 357 4 vmsppl 480 487 0 453 7 1 6 6 0 8 0 rwobjpl 72 14345 0 11742 48 0 48 48 0 8 0 pdppl 4096 983 0 906 105 22 83 95 0 8 6 pvpl 32 14365 0 0 116 0 116 116 0 265 0 pmappl 256 487 0 453 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 389 0 25 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833df6d5) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839f7e00) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff839f7e00) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80092e3860) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80092e3860) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80092e3860) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806a9c3230,0,ffff80003a432e88,ffff80003a432e64,0,2,d4b42fa61ab77d8a,ffff80003a4330e0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003a4330a8,ffff80003a4330e0,ffff80003a432f10,ffff80003a432f18) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003a4330a8,ffff80003a4330e0,ffff80003a433020) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806c1e4030,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003a433230,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003a433230) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x771f9075f120, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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 __mp_lock(ffffffff839300a8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839300a8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80003c451d70) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c451d70) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x62ab60a2430, count: 9 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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 __mp_lock(ffffffff839300a8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839300a8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80003c451d70) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c451d70) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x62ab60a2430, count: -6