panic: acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 239004 87682 0 0x2 0x4000080 1 syz-fuzzer *245645 66348 0 0x14000 0x200 0 systqmp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8241665c) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828eb410,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828eb208) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828eb208) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828eb208) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da39f0,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da39f0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828cba90) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828cba90) at pool_cache_gc+0x138 sys/kern/subr_pool.c:2025 pool_gc_pages(0) at pool_gc_pages+0x6c sys/kern/subr_pool.c:1559 taskq_thread(ffffffff827a89c0) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8241665c) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828eb410,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828eb208) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828eb208) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828eb208) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da39f0,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da39f0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828cba90) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828cba90) at pool_cache_gc+0x138 sys/kern/subr_pool.c:2025 pool_gc_pages(0) at pool_gc_pages+0x6c sys/kern/subr_pool.c:1559 taskq_thread(ffffffff827a89c0) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020da3760 rbx 0xffff800020da3810 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8169567f kprintf+0x16f r9 0x1 r10 0x2 r11 0x2b2ef588b3cacce2 r12 0x3000000008 r13 0xffff800020da3770 r14 0x100 r15 0x1 rip 0xffffffff8138f5b8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020da3750 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (systqmp) pid=245645 stat=onproc flags process=14000 proc=200 pri=32, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020d89380,0xffff800020d88c40 process=0xffff800020d8a000 user=0xffff800020d9e000, vmspace=0xffffffff828d40a8 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 54912 17746 60610 0 2 0 syz-executor.0 54912 506102 60610 0 2 0x4000000 syz-executor.0 60610 151250 87682 0 2 0x2 syz-executor.0 56636 102059 0 0 3 0x14200 bored sosplice 8136 281371 87682 0 3 0x82 piperd syz-executor.1 87682 442736 63545 0 3 0x82 thrsleep syz-fuzzer 87682 207739 63545 0 2 0x4000482 syz-fuzzer 87682 385773 63545 0 2 0x4000002 syz-fuzzer 87682 158840 63545 0 3 0x4000082 thrsleep syz-fuzzer 87682 447374 63545 0 3 0x4000082 thrsleep syz-fuzzer 87682 3138 63545 0 3 0x4000082 thrsleep syz-fuzzer 87682 500066 63545 0 3 0x4000082 thrsleep syz-fuzzer 87682 239004 63545 0 7 0x4000082 syz-fuzzer 87682 164661 63545 0 3 0x4000082 kqread syz-fuzzer 87682 482955 63545 0 2 0x4000002 syz-fuzzer 87682 453521 63545 0 3 0x4000082 thrsleep syz-fuzzer 63545 389417 3954 0 3 0x10008a pause ksh 3954 377757 33719 0 3 0x92 select sshd 46270 67716 1 0 3 0x100083 ttyin getty 33719 302939 1 0 3 0x80 select sshd 83772 523610 59315 74 2 0x100492 pflogd 59315 457287 1 0 3 0x80 netio pflogd 31018 489762 40996 73 3 0x100090 kqread syslogd 40996 405658 1 0 3 0x100082 netio syslogd 67433 389482 1 77 3 0x100090 poll dhclient 14809 245423 1 0 3 0x80 poll dhclient 91727 130245 0 0 3 0x14200 bored smr 36367 84917 0 0 2 0x14200 zerothread 57591 188790 0 0 3 0x14200 aiodoned aiodoned 71756 44537 0 0 2 0x14200 update 3131 209025 0 0 3 0x14200 cleaner cleaner 34458 482156 0 0 3 0x14200 reaper reaper 88195 309576 0 0 3 0x14200 pgdaemon pagedaemon 28879 115634 0 0 3 0x14200 bored crynlk 36642 222167 0 0 3 0x14200 bored crypto 89652 286615 0 0 3 0x40014200 acpi0 acpi0 56271 226330 0 0 3 0x40014200 idle1 753 353725 0 0 3 0x14200 bored softnet *66348 245645 0 0 7 0x14200 systqmp 69849 345115 0 0 3 0x14200 bored systq 19773 289619 0 0 2 0x40014200 softclock 30084 123051 0 0 3 0x40014200 idle0 1 175382 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex mbufpl r = 0 (0xffffffff828cbaa0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_cache_gc+0x12d pl_enter sys/kern/subr_pool.c:104 [inline] #3 pool_cache_gc+0x12d pool_cache_list_put sys/kern/subr_pool.c:1968 [inline] #3 pool_cache_gc+0x12d sys/kern/subr_pool.c:2025 #4 pool_gc_pages+0x6c sys/kern/subr_pool.c:1559 #5 taskq_thread+0xec sys/kern/kern_task.c:437 #6 proc_trampoline+0x1c Process 66348 (systqmp) thread 0xffff800020d88ea0 (245645) shared rwlock pools r = 0 (0xffffffff826e5740) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pool_gc_pages+0x21 sys/kern/subr_pool.c:1555 #2 taskq_thread+0xec sys/kern/kern_task.c:437 #3 proc_trampoline+0x1c shared rwlock systqmp r = 0 (0xffffffff827a8a30) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 taskq_thread+0xdf sys/kern/kern_task.c:436 #2 proc_trampoline+0x1c exclusive mutex mbufpl r = 0 (0xffffffff828cbaa0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_cache_gc+0x12d pl_enter sys/kern/subr_pool.c:104 [inline] #3 pool_cache_gc+0x12d pool_cache_list_put sys/kern/subr_pool.c:1968 [inline] #3 pool_cache_gc+0x12d sys/kern/subr_pool.c:2025 #4 pool_gc_pages+0x6c sys/kern/subr_pool.c:1559 #5 taskq_thread+0xec sys/kern/kern_task.c:437 #6 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9490 6421K 6917K 78643K 11079 0 pcb 13 8K 8K 78643K 31 0 rtable 107 3K 3K 78643K 282 0 ifaddr 53 11K 12K 78643K 83 0 counters 43 33K 34K 78643K 49 0 ioctlops 0 0K 4K 78643K 1833 0 iov 0 0K 12K 78643K 8 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1386 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 30 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 354 0 sigio 0 0K 0K 78643K 2 0 proc 61 63K 95K 78643K 489 0 subproc 32 2K 2K 78643K 53 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 5 0 in_multi 42 2K 2K 78643K 79 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 239 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 115 38K 38K 78643K 1871 0 UVM aobj 5 2K 2K 78643K 5 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 15 0 NDP 8 0K 0K 78643K 18 0 temp 84 3854K 3921K 78643K 6323 0 kqueue 3 4K 8K 78643K 5 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 8 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 21 0 19 1 0 1 1 0 8 0 rtentry 112 68 0 23 2 0 2 2 0 8 0 unpcb 120 103 0 93 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 12 0 12 1 1 0 1 0 8 0 tcpcb 544 77 0 72 1 0 1 1 0 8 0 inpcb 296 237 0 229 3 2 1 2 0 8 0 nd6 48 17 0 10 1 0 1 1 0 8 0 pffrent 40 4 0 4 2 2 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 28 0 13 1 0 1 1 0 8 0 pfstkey 112 28 0 13 1 0 1 1 0 8 0 pfstate 328 28 0 13 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 272 0 82 13 1 12 13 0 8 0 art_table 32 273 0 82 2 0 2 2 0 8 0 art_node 16 67 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 8 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 24 0 14 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1778 0 372 89 0 89 89 0 8 0 ffsino 272 1778 0 372 95 0 95 95 0 8 0 nchpl 144 2375 0 777 60 0 60 60 0 8 0 uvmvnodes 72 1972 0 0 36 0 36 36 0 8 0 vnodes 208 1972 0 0 104 0 104 104 0 8 0 namei 1024 6755 0 6755 2 1 1 1 0 8 1 percpumem 16 35 0 3 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 560 1 0 0 1 0 1 1 0 8 0 scxspl 192 7049 0 7049 8 7 1 7 0 8 1 plimitpl 152 22 0 14 1 0 1 1 0 8 0 sigapl 424 567 0 535 4 0 4 4 0 8 0 futexpl 56 3621 0 3621 2 1 1 1 0 8 1 knotepl 112 75 0 56 1 0 1 1 0 8 0 kqueuepl 144 14 0 12 1 0 1 1 0 8 0 pipepl 304 105 0 95 2 1 1 2 0 8 0 fdescpl 496 551 0 535 3 0 3 3 0 8 0 filepl 152 2657 0 2550 5 0 5 5 0 8 0 lockfpl 104 45 0 43 1 0 1 1 0 8 0 lockfspl 48 15 0 13 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 228 0 219 1 0 1 1 0 8 0 zombiepl 144 535 0 535 1 0 1 1 0 8 1 processpl 992 567 0 535 6 1 5 5 0 8 0 procpl 624 1080 0 1037 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 400 361 0 341 4 1 3 3 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 204 0 0 25 0 25 25 0 8 0 mtagpl 96 15 0 0 1 0 1 1 0 8 0 mbufpl 256 239 0 0 14 0 14 14 0 8 0 bufpl 280 3890 0 133 269 0 269 269 0 8 0 anonpl 16 64707 0 49200 69 2 67 68 0 124 0 amapchunkpl 152 2544 0 2408 7 1 6 7 0 158 0 amappl16 192 2295 0 1380 46 0 46 46 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 67 0 59 1 0 1 1 0 8 0 amappl13 168 106 0 101 1 0 1 1 0 8 0 amappl12 160 205 0 201 1 0 1 1 0 8 0 amappl11 152 101 0 85 1 0 1 1 0 8 0 amappl10 144 25 0 21 1 0 1 1 0 8 0 amappl9 136 391 0 389 1 0 1 1 0 8 0 amappl8 128 359 0 336 1 0 1 1 0 8 0 amappl7 120 124 0 111 1 0 1 1 0 8 0 amappl6 112 62 0 58 2 1 1 1 0 8 0 amappl5 104 596 0 580 1 0 1 1 0 8 0 amappl4 96 606 0 576 1 0 1 1 0 8 0 amappl3 88 107 0 100 1 0 1 1 0 8 0 amappl2 80 3395 0 3325 2 0 2 2 0 8 0 amappl1 72 23675 0 23237 23 13 10 18 0 8 0 amappl 80 1336 0 1291 1 0 1 1 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 552 0 535 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 552 0 535 1 0 1 1 0 8 0 vmmpekpl 168 7756 0 7720 2 0 2 2 0 8 0 vmmpepl 168 75966 0 73889 152 32 120 126 0 357 29 vmsppl 368 551 0 535 2 0 2 2 0 8 0 pdppl 4096 1111 0 1071 6 0 6 6 0 8 0 pvpl 32 212458 0 193793 166 6 160 163 0 265 0 pmappl 232 551 0 535 3 2 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 269 0 6 8 0 8 8 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(ffffffff8241665c) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828eb410,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828eb208) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828eb208) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828eb208) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da39f0,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da39f0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828cba90) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828cba90) at pool_cache_gc+0x138 sys/kern/subr_pool.c:2025 pool_gc_pages(0) at pool_gc_pages+0x6c sys/kern/subr_pool.c:1559 taskq_thread(ffffffff827a89c0) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828eb208) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828eb208) at __mp_lock+0x12e sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828eb208,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020eb0020,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020eb0020,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020eb0020,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 rwsleep(ffff800020eb00d8,ffff8000ffffec88,120,ffffffff82469ff6,0) at rwsleep+0x11b sys/kern/kern_synch.c:313 thrsleep(ffff800020ddc278,ffff800020eb01c0) at thrsleep+0x3f2 sys/kern/kern_synch.c:736 sys___thrsleep(ffff800020ddc278,ffff800020eb01c0,ffff800020eb0210) at sys___thrsleep+0xb5 sys/kern/kern_synch.c:777 syscall(ffff800020eb0290) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020eb0290) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc0000dbe38, count: 2 ddb{1}> trace x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828eb208) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828eb208) at __mp_lock+0x12e sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828eb208,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020eb0020,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020eb0020,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020eb0020,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 rwsleep(ffff800020eb00d8,ffff8000ffffec88,120,ffffffff82469ff6,0) at rwsleep+0x11b sys/kern/kern_synch.c:313 thrsleep(ffff800020ddc278,ffff800020eb01c0) at thrsleep+0x3f2 sys/kern/kern_synch.c:736 sys___thrsleep(ffff800020ddc278,ffff800020eb01c0,ffff800020eb0210) at sys___thrsleep+0xb5 sys/kern/kern_synch.c:777 syscall(ffff800020eb0290) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020eb0290) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc0000dbe38, count: -13