panic: acquiring blockable sleep lock with spinlock or critical section held (rwlock) vmmaplk Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 32501 75681 32767 0x1010 0x2000 0 syz-executor *406927 75681 32767 0x1010 0x4080000 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8306e455) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd8075258100,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd80752580f0,2) at rw_enter+0x122 uvmfault_lookup(ffff80003719cd90,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80003719cd90,ffff80003719cdc8,ffff80003719cdf0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd8075258010,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80003719cf30,20000100) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003719cf30) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80003719d2b4,5,20000100,ffff80003719d2e8,0,37,bb9d2008a5120ade) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff800034f8b4a8,ffff80003719d420,ffff80003719d370) at sys_sysctl+0x422 syscall(ffff80003719d420) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003719d420) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff80003719d4a0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: acquiring blockable sleep lock with spinlock or critical section held (rwlock) vmmaplk ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8306e455) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd8075258100,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd80752580f0,2) at rw_enter+0x122 uvmfault_lookup(ffff80003719cd90,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80003719cd90,ffff80003719cdc8,ffff80003719cdf0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd8075258010,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80003719cf30,20000100) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003719cf30) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80003719d2b4,5,20000100,ffff80003719d2e8,0,37,bb9d2008a5120ade) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff800034f8b4a8,ffff80003719d420,ffff80003719d370) at sys_sysctl+0x422 syscall(ffff80003719d420) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003719d420) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x53ee3be2690, count: -15 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003719c990 rbx 0xffff800029b7cdbf rdx 0 rcx 0xffff800034f8b4a8 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe3802ee351fd5a96 r11 0x6dd66c7a5852c0b4 r12 0xffff800029b7cbc0 r13 0 r14 0 r15 0x1 rip 0xffffffff81d89475 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003719c980 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=406927 pid=75681 tcnt=5 stat=onproc flags process=1010 proc=4080000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800034f8b730 scnt=4 ecnt=0 forw=0xffffffffffffffff, list=0xffff800034f8b730,0xffff800034f8a588 process=0xffff80002d55ed58 user=0xffff800037198000, vmspace=0xfffffd8075258010 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 75681 32501 2341 32767 7 0x3010 syz-executor *75681 406927 2341 32767 7 0x4081010 syz-executor 75681 328905 2341 32767 2 0x4081090 syz-executor 75681 45465 2341 32767 2 0x4081090 syz-executor 75681 441526 2341 32767 2 0x4081010 syz-executor 30622 193240 69017 32767 2 0x10 syz-executor 30622 426219 69017 32767 3 0x4000090 fsleep syz-executor 23741 445998 95776 32767 2 0x10 syz-executor 23741 191607 95776 32767 3 0x4000090 kqsel syz-executor 25616 134717 73314 32767 2 0x10 syz-executor 25616 299335 73314 32767 2 0x4000010 syz-executor 25616 109533 73314 32767 3 0x4000090 fsleep syz-executor 2341 505448 36437 32767 3 0x90 nanoslp syz-executor 36437 60965 9615 0 3 0x82 wait syz-executor 98285 396945 89092 32767 3 0x90 nanoslp syz-executor 89092 443681 9615 0 3 0x82 wait syz-executor 73314 129273 84815 32767 3 0x90 nanoslp syz-executor 84815 4177 9615 0 3 0x82 wait syz-executor 19906 54615 67281 32767 3 0x90 nanoslp syz-executor 67281 378340 9615 0 3 0x82 wait syz-executor 97164 315303 86177 32767 3 0x90 nanoslp syz-executor 86177 152379 9615 0 3 0x82 wait syz-executor 69017 63015 81427 32767 3 0x90 nanoslp syz-executor 81427 451825 9615 0 3 0x82 wait syz-executor 95776 86878 36469 32767 3 0x90 nanoslp syz-executor 36469 279894 9615 0 3 0x82 wait syz-executor 34308 508723 59741 32767 3 0x90 wait syz-executor 59741 304109 9615 0 3 0x82 wait syz-executor 89728 96017 81441 0 3 0x82 netio sshd-session 85195 110280 81441 0 3 0x82 netio sshd-session 57661 458584 81441 0 3 0x82 netio sshd-session 23637 482150 41434 0 3 0x100082 sbwait arp 41434 346290 21765 0 3 0x10008a sigsusp sh 21765 329725 1 0 3 0x80 wait syz-executor 50377 275857 0 0 3 0x14200 bored sosplice 9615 185131 39459 0 2 0x2 syz-executor 39459 133348 11363 0 3 0x10008a sigsusp ksh 11363 517709 39827 0 3 0x98 kqread sshd-session 39827 385087 81441 0 3 0x92 kqread sshd-session 73862 437926 1 0 3 0x100083 ttyin getty 81441 63444 1 0 3 0x88 kqread sshd 8030 248237 71485 73 3 0x1100090 kqread syslogd 71485 309123 1 0 3 0x100082 sbwait syslogd 58591 210958 1 0 3 0x100080 kqread resolvd 14342 498684 90979 77 3 0x100092 kqread dhcpleased 90258 410239 90979 77 3 0x100092 kqread dhcpleased 90979 110772 1 0 3 0x80 kqread dhcpleased 86560 357684 0 0 3 0x14200 bored smr 10937 216788 0 0 2 0x14200 zerothread 35510 290535 0 0 3 0x14200 aiodoned aiodoned 24433 3348 0 0 3 0x14200 syncer update 84783 11765 0 0 3 0x14200 cleaner cleaner 9840 151713 0 0 3 0x14200 reaper reaper 26855 219423 0 0 3 0x14200 pgdaemon pagedaemon 32364 190827 0 0 3 0x14200 bored viomb 69758 429034 0 0 3 0x40014200 acpi0 acpi0 27485 232952 0 0 3 0x40014200 idle1 36320 374740 0 0 3 0x14200 bored softnet3 44801 438705 0 0 3 0x14200 bored softnet2 14638 287091 0 0 3 0x14200 bored softnet1 82050 390941 0 0 3 0x14200 bored softnet0 37659 38588 0 0 3 0x14200 bored systqmp 10517 276073 0 0 3 0x14200 bored systq 54318 303258 0 0 3 0x14200 tmoslp softclockmp 59512 407388 0 0 3 0x40014200 tmoslp softclock 86586 96646 0 0 3 0x40014200 idle0 1 155013 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &table->inpt_mtx r = 0 (0xffffffff835a74d8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 sysctl_file+0xa2d #4 kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 #5 sys_sysctl+0x422 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 75681 (syz-executor) thread 0xffff800034f8b4a8 (406927) exclusive rwlock netlock r = 0 (0xffffffff834d7db0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 sysctl_file+0xa18 sys/kern/kern_sysctl.c:1675 #2 kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 #3 sys_sysctl+0x422 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83541018) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 sysctl_vslock+0x80 sys/kern/kern_sysctl.c:181 #2 kern_sysctl+0x1b3 sys/kern/kern_sysctl.c:498 #3 sys_sysctl+0x422 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff8345e090) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:176 #3 kern_sysctl+0x1b3 sys/kern/kern_sysctl.c:498 #4 sys_sysctl+0x422 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 exclusive mutex &table->inpt_mtx r = 0 (0xffffffff835a74d8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 sysctl_file+0xa2d #4 kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 #5 sys_sysctl+0x422 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 75681 (syz-executor) thread 0xffff800034f8a578 (328905) exclusive rwlock amaplk r = 0 (0xfffffd80506d14e0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvm_map_protect+0xaf2 uvm_map_lock_entry sys/uvm/uvm_map.c:464 [inline] #1 uvm_map_protect+0xaf2 sys/uvm/uvm_map.c:3185 #2 sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585 #3 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #3 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd8075258100) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252 #3 uvm_map_protect+0xe1 sys/uvm/uvm_map.c:3059 #4 sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10239 11054K 11059K 166960K 13536 0 pcb 17 24K 28K 166960K 27 0 rtable 236 6K 7K 166960K 26845 0 pf 31 16K 16K 166960K 1517 0 ifaddr 42 15K 19K 166960K 3001 0 ifgroup 50 2K 2K 166960K 3014 0 sysctl 4 1K 5K 166960K 45 0 counters 64 36K 36K 166960K 1542 0 ioctlops 0 0K 2K 166960K 2107 0 iov 0 0K 32K 166960K 4297 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1483 93K 93K 166960K 20480 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 801 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 1530 0 dirhash 18 3K 4K 166960K 1170 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 29 109K 169K 166960K 50948 0 sigio 0 0K 0K 166960K 1859 0 proc 58 79K 176K 166960K 25312 0 subproc 117 7K 13K 166960K 11232 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 12070 0 in_multi 99 7K 8K 166960K 10203 0 ether_multi 1 0K 0K 166960K 308 0 mrt 1 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 403 1791K 1791K 166960K 403 0 exec 0 0K 1K 166960K 19690 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 340 86K 140K 166960K 440772 0 UVM aobj 131 5K 7K 166960K 154 0 pinsyscall 57 114K 138K 166960K 72926 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 3579 0 NDP 13 0K 2K 166960K 2235 0 temp 82 6825K 6952K 166960K 300477 0 kqueue 18 27K 37K 166960K 8500 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 8237 0 8233 59 58 1 3 0 8 0 rtentry 112 8723 0 8612 17 13 4 4 0 8 0 unpcb 144 47916 0 47895 200 198 2 8 0 8 1 syncache 336 913 0 913 34 33 1 1 0 8 1 tcpqe 32 404 0 404 47 46 1 1 0 8 1 tcpcb 808 34165 0 34093 343 328 15 27 0 8 2 arp 120 1518 0 1500 1 0 1 1 0 8 0 ipq 40 224 0 221 4 3 1 1 0 8 0 ipqe 40 3865 0 3862 4 3 1 1 0 8 0 inpcb 336 76748 0 76669 343 329 14 23 0 8 0 ip6q 72 15 0 15 15 15 0 1 0 8 0 ip6af 40 29 0 29 15 15 0 1 0 8 0 nd6 136 2724 0 2699 11 10 1 2 0 8 0 kcovpl 48 864 0 855 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 35148 0 34685 208 178 30 33 0 8 0 art_table 32 35149 0 34685 12 8 4 5 0 8 0 art_node 16 8722 0 8621 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 5 3 3 0 1 0 8 0 semapl 112 1524 0 1514 1 0 1 1 0 8 0 shmpl 112 151 0 23 4 0 4 4 0 8 0 dirhash 1024 804 0 775 21 17 4 5 0 8 0 dino2pl 256 66434 0 62107 272 1 271 271 0 8 0 ffsino 272 66434 0 62107 289 0 289 289 0 8 0 nchpl 144 122983 0 119780 121 2 119 119 0 8 0 uvmvnodes 80 11035 0 0 226 0 226 226 0 8 0 vnodes 216 11035 0 0 614 0 614 614 0 8 0 namei 1024 526049 0 526049 53 52 1 2 0 8 1 percpumem 16 785 0 739 1 0 1 1 0 8 0 kstatmem 264 1500 0 1478 2 0 2 2 0 8 0 scxspl 216 489414 0 489414 110 107 3 8 1 8 3 plimitpl 152 16358 0 16330 3 1 2 2 0 8 0 sigapl 424 49887 0 49824 20 12 8 9 0 8 0 futexpl 64 605586 0 605583 25 24 1 1 0 8 0 knotepl 120 2158 0 0 25 0 25 25 0 8 0 kqueuepl 216 18463 0 18450 168 167 1 8 0 8 0 pipepl 320 10149 0 10116 119 115 4 12 0 8 0 fdescpl 496 49868 0 49824 17 10 7 8 0 8 0 filepl 152 369279 0 368988 231 216 15 24 0 8 1 lockfpl 104 15419 0 15417 13 12 1 2 0 8 0 lockfspl 48 4494 0 4492 1 0 1 1 0 8 0 sessionpl 144 1121 0 1101 1 0 1 1 0 8 0 pgrppl 48 2922 0 2894 1 0 1 1 0 8 0 ucredpl 104 74403 0 74384 1 0 1 1 0 8 0 zombiepl 144 49828 0 49824 1 0 1 1 0 8 0 processpl 1160 49887 0 49824 8 3 5 6 0 8 0 procpl 648 118089 0 118018 14 6 8 8 0 8 0 srpgc 96 26 0 26 11 11 0 1 0 8 0 sosppl 168 639 0 636 27 26 1 1 0 8 0 sockpl 664 133986 0 133875 523 505 18 34 0 8 0 mcl64k 65536 59 0 0 5 0 5 5 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 1 2 3 0 8 0 mcl4k 4096 311 0 0 19 5 14 19 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 573 0 0 14 8 6 7 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 10400 0 0 557 0 557 557 0 8 0 bufpl 280 90657 0 79622 789 0 789 789 0 8 0 anonpl 24 6167711 0 6157383 588 499 89 113 0 185 3 amapchunkpl 152 1474576 0 1473689 425 387 38 55 0 158 3 amappl16 200 146469 0 146254 486 462 24 37 0 8 8 amappl15 192 21 0 21 11 11 0 1 0 8 0 amappl14 184 2351 0 2336 1 0 1 1 0 8 0 amappl13 176 40 0 40 25 25 0 1 0 8 0 amappl12 168 62684 0 62638 10 7 3 3 0 8 0 amappl11 160 54 0 43 1 0 1 1 0 8 0 amappl10 152 8 0 7 2 1 1 1 0 8 0 amappl9 144 138 0 137 4 3 1 1 0 8 0 amappl8 136 24 0 22 1 0 1 1 0 8 0 amappl7 128 1958 0 1943 1 0 1 1 0 8 0 amappl6 120 7524 0 7521 1 0 1 1 0 8 0 amappl5 112 3462 0 3449 1 0 1 1 0 8 0 amappl4 104 4002 0 3983 1 0 1 1 0 8 0 amappl3 96 296182 0 296016 10 5 5 5 0 8 0 amappl2 88 15337 0 15248 5 2 3 3 0 8 0 amappl1 80 297537 0 296705 43 23 20 24 0 8 0 amappl 88 429283 0 429019 8 1 7 7 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 72 153 0 23 3 0 3 3 0 8 0 uaddrrnd 24 49868 0 49824 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 49868 0 49824 1 0 1 1 0 8 0 vmmpekpl 168 447703 0 447655 5 1 4 4 0 8 0 vmmpepl 168 3167068 0 3164233 499 364 135 151 0 357 4 vmsppl 440 49867 0 49824 16 10 6 7 0 8 0 rwobjpl 56 817686 0 805037 231 49 182 183 0 8 0 pdppl 4096 99743 0 99648 1704 1607 97 121 0 8 2 pvpl 32 65184 0 0 521 0 521 521 0 265 0 pmappl 248 49867 0 49824 8 4 4 4 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 3870 0 2561 39 1 38 38 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff834d2ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_release_all(ffffffff83540e10) at __mp_release_all+0xd8 sys/kern/kern_lock.c:194 msleep(ffff80002d55eeb8,ffff80002d55ee60,20,ffffffff830ba81a,0) at msleep+0x1ed single_thread_set(ffff800034f8b730,3) at single_thread_set+0x41e single_thread_wait sys/kern/kern_sig.c:2187 [inline] single_thread_set(ffff800034f8b730,3) at single_thread_set+0x41e sys/kern/kern_sig.c:2170 exit1(ffff800034f8b730,b,0,1) at exit1+0xa3 sys/kern/kern_exit.c:132 sys_exit(ffff800034f8b730,ffff80002d3445a0,ffff80002d3444f0) at sys_exit+0x1a syscall(ffff80002d3445a0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002d3445a0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7469b47a39b0, count: 5 ddb{0}> trace x86_ipi_db(ffffffff834d2ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_release_all(ffffffff83540e10) at __mp_release_all+0xd8 sys/kern/kern_lock.c:194 msleep(ffff80002d55eeb8,ffff80002d55ee60,20,ffffffff830ba81a,0) at msleep+0x1ed single_thread_set(ffff800034f8b730,3) at single_thread_set+0x41e single_thread_wait sys/kern/kern_sig.c:2187 [inline] single_thread_set(ffff800034f8b730,3) at single_thread_set+0x41e sys/kern/kern_sig.c:2170 exit1(ffff800034f8b730,b,0,1) at exit1+0xa3 sys/kern/kern_exit.c:132 sys_exit(ffff800034f8b730,ffff80002d3445a0,ffff80002d3444f0) at sys_exit+0x1a syscall(ffff80002d3445a0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002d3445a0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7469b47a39b0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8306e455) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd8075258100,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd80752580f0,2) at rw_enter+0x122 uvmfault_lookup(ffff80003719cd90,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80003719cd90,ffff80003719cdc8,ffff80003719cdf0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd8075258010,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80003719cf30,20000100) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003719cf30) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80003719d2b4,5,20000100,ffff80003719d2e8,0,37,bb9d2008a5120ade) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff800034f8b4a8,ffff80003719d420,ffff80003719d370) at sys_sysctl+0x422 syscall(ffff80003719d420) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003719d420) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff80003719d4a0, count: 0 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8306e455) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(fffffd8075258100,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter(fffffd80752580f0,2) at rw_enter+0x122 uvmfault_lookup(ffff80003719cd90,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80003719cd90,ffff80003719cdc8,ffff80003719cdf0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd8075258010,20000000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80003719cf30,20000100) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003719cf30) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x62 kern_sysctl(ffff80003719d2b4,5,20000100,ffff80003719d2e8,0,37,bb9d2008a5120ade) at kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 sys_sysctl(ffff800034f8b4a8,ffff80003719d420,ffff80003719d370) at sys_sysctl+0x422 syscall(ffff80003719d420) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003719d420) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x53ee3be2690, count: -15