panic: pool_do_get: anonpl free list modified: page 0xfffffd806530f000; item addr 0xfffffd806530f010; offset 0x0=0x0 != 0x3afbfee28955e3db Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *442383 4320 0 0 0x4000000 0K syz-executor.1 3457 46075 0 0x2 0x480 1 syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8226e689) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff82681288,2,ffff8000223a7538) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82681288,2) at pool_get+0xeb sys/kern/subr_pool.c:581 uvm_analloc() at uvm_analloc+0x29 sys/uvm/uvm_anon.c:64 uvm_fault(fffffd807f0008a0,203c7000,0,2) at uvm_fault+0xfb6 sys/uvm/uvm_fault.c:1114 pageflttrap(ffff8000223a78d0,0) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 kerntrap(ffff8000223a78d0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 ffs_read(ffff8000223a7ac0) at ffs_read+0x3d2 sys/ufs/ffs/ffs_vnops.c:258 VOP_READ(fffffd80653f2020,ffff8000223a7cf0,0,fffffd807f7bf840) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd80688a0e58,ffff8000223a7cf0,1) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020ed9128,3,ffff8000223a7cf0,1,ffff8000223a7de0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 end trace frame: 0xffff8000223a7d80, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic pool_do_get: anonpl free list modified: page 0xfffffd806530f000; item addr 0xfffffd806530f010; offset 0x0=0x0 != 0x3afbfee28955e3db ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8226e689) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff82681288,2,ffff8000223a7538) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82681288,2) at pool_get+0xeb sys/kern/subr_pool.c:581 uvm_analloc() at uvm_analloc+0x29 sys/uvm/uvm_anon.c:64 uvm_fault(fffffd807f0008a0,203c7000,0,2) at uvm_fault+0xfb6 sys/uvm/uvm_fault.c:1114 pageflttrap(ffff8000223a78d0,0) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 kerntrap(ffff8000223a78d0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 ffs_read(ffff8000223a7ac0) at ffs_read+0x3d2 sys/ufs/ffs/ffs_vnops.c:258 VOP_READ(fffffd80653f2020,ffff8000223a7cf0,0,fffffd807f7bf840) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd80688a0e58,ffff8000223a7cf0,1) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020ed9128,3,ffff8000223a7cf0,1,ffff8000223a7de0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_preadv(ffff800020ed9128,ffff8000223a7d98,ffff8000223a7de0) at sys_preadv+0xb8 sys/kern/vfs_syscalls.c:3276 syscall(ffff8000223a7e60) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000223a7e60) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x383190cd8f0, count: -17 ddb{0}> show registers rdi 0 rsi 0x3ffff acpi_pdirpa+0x2be67 rbp 0xffff8000223a7380 rbx 0xffff8000223a7430 rdx 0x40000 acpi_pdirpa+0x2be68 rcx 0xffff800020f92000 rax 0xffff800000a1d240 r8 0xffffffff818760ff kprintf+0x16f r9 0x1 r10 0x25 r11 0xe5b1bf769b9140b r12 0x3000000008 r13 0xffff8000223a7390 r14 0x100 r15 0x1 rip 0xffffffff81b84248 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000223a7370 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=442383 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ed9398,0xffffffff826798e0 process=0xffff800020ecfb08 user=0xffff8000223a2000, vmspace=0xfffffd807f0008a0 estcpu=36, cpticks=4, pctcpu=0.0 user=0, sys=4, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 4320 249651 46075 0 2 0 syz-executor.1 * 4320 442383 46075 0 7 0x4000000 syz-executor.1 31735 364067 0 0 3 0x14200 bored sosplice 3164 475192 85237 0 3 0x82 piperd syz-executor.0 46075 3457 85237 0 7 0x482 syz-executor.1 85237 262106 83012 0 3 0x82 thrsleep syz-fuzzer 85237 289126 83012 0 2 0x4000482 syz-fuzzer 85237 207546 83012 0 3 0x4000082 thrsleep syz-fuzzer 85237 29976 83012 0 3 0x4000082 thrsleep syz-fuzzer 85237 214058 83012 0 3 0x4000082 thrsleep syz-fuzzer 85237 131944 83012 0 2 0x4000002 syz-fuzzer 85237 405891 83012 0 3 0x4000082 thrsleep syz-fuzzer 85237 218588 83012 0 3 0x4000082 thrsleep syz-fuzzer 85237 244201 83012 0 3 0x4000082 kqread syz-fuzzer 85237 243315 83012 0 3 0x4000082 thrsleep syz-fuzzer 83012 127065 10148 0 3 0x10008a pause ksh 10148 431535 98068 0 3 0x92 select sshd 37889 42007 1 0 3 0x100083 ttyin getty 98068 512575 1 0 3 0x80 select sshd 74856 224700 78338 74 3 0x100092 bpf pflogd 78338 75180 1 0 3 0x80 netio pflogd 35644 395035 29624 73 3 0x100090 kqread syslogd 29624 44406 1 0 3 0x100082 netio syslogd 17252 460431 1 77 3 0x100090 poll dhclient 76868 480460 1 0 3 0x80 poll dhclient 5329 290878 0 0 3 0x14200 bored smr 85421 261127 0 0 2 0x14200 zerothread 44089 472832 0 0 3 0x14200 aiodoned aiodoned 36629 517964 0 0 3 0x14200 syncer update 85551 105525 0 0 3 0x14200 cleaner cleaner 41151 407419 0 0 3 0x14200 reaper reaper 49405 3621 0 0 3 0x14200 pgdaemon pagedaemon 19314 313022 0 0 3 0x14200 bored crynlk 87116 437859 0 0 3 0x14200 bored crypto 78764 365899 0 0 3 0x40014200 acpi0 acpi0 5704 222130 0 0 3 0x40014200 idle1 31524 43680 0 0 3 0x14200 bored softnet 71616 24453 0 0 3 0x14200 bored systqmp 35963 385350 0 0 3 0x14200 bored systq 25077 118030 0 0 3 0x40014200 bored softclock 47061 522263 0 0 3 0x40014200 idle0 1 42872 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex anonpl r = 0 (0xffffffff82681298) #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_get+0xbf sys/kern/subr_pool.c:578 #4 uvm_analloc+0x29 sys/uvm/uvm_anon.c:64 #5 uvm_fault+0xfb6 sys/uvm/uvm_fault.c:1114 #6 pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 #7 kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 #8 alltraps_kern_meltdown+0x7b #9 copyout+0x53 #10 ffs_read+0x3d2 sys/ufs/ffs/ffs_vnops.c:258 #11 VOP_READ+0xbf sys/kern/vfs_vops.c:247 #12 vn_read+0x124 sys/kern/vfs_vnops.c:375 #13 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #14 sys_preadv+0xb8 sys/kern/vfs_syscalls.c:3276 #15 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #15 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #16 Xsyscall+0x128 Process 4320 (syz-executor.1) thread 0xffff800020ed9128 (442383) shared rwlock vmmaplk r = 0 (0xfffffd807f0008b8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1448 #2 uvm_fault+0x7f sys/uvm/uvm_fault.c:524 #3 pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 #4 kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 #5 alltraps_kern_meltdown+0x7b #6 copyout+0x53 #7 ffs_read+0x3d2 sys/ufs/ffs/ffs_vnops.c:258 #8 VOP_READ+0xbf sys/kern/vfs_vops.c:247 #9 vn_read+0x124 sys/kern/vfs_vnops.c:375 #10 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #11 sys_preadv+0xb8 sys/kern/vfs_syscalls.c:3276 #12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8064fb2818) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vn_read+0x52 sys/kern/vfs_vnops.c:359 #6 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #7 sys_preadv+0xb8 sys/kern/vfs_syscalls.c:3276 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8268ffa8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 vn_read+0x45 sys/kern/vfs_vnops.c:357 #2 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #3 sys_preadv+0xb8 sys/kern/vfs_syscalls.c:3276 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 exclusive mutex anonpl r = 0 (0xffffffff82681298) #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_get+0xbf sys/kern/subr_pool.c:578 #4 uvm_analloc+0x29 sys/uvm/uvm_anon.c:64 #5 uvm_fault+0xfb6 sys/uvm/uvm_fault.c:1114 #6 pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 #7 kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 #8 alltraps_kern_meltdown+0x7b #9 copyout+0x53 #10 ffs_read+0x3d2 sys/ufs/ffs/ffs_vnops.c:258 #11 VOP_READ+0xbf sys/kern/vfs_vops.c:247 #12 vn_read+0x124 sys/kern/vfs_vnops.c:375 #13 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #14 sys_preadv+0xb8 sys/kern/vfs_syscalls.c:3276 #15 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #15 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #16 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9538 6549K 6937K 78643K 11734 0 pcb 13 8K 8K 78643K 73 0 rtable 98 3K 3K 78643K 371 0 ifaddr 84 16K 16K 78643K 145 0 counters 43 33K 34K 78643K 59 0 ioctlops 0 0K 4K 78643K 1479 0 iov 0 0K 16K 78643K 38 0 mount 1 1K 1K 78643K 1 0 vnodes 1226 77K 77K 78643K 1523 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 27 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1823 197K 290K 78643K 12980 0 file desc 5 13K 25K 78643K 264 0 sigio 0 0K 0K 78643K 6 0 proc 60 63K 95K 78643K 476 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 16 0 in_multi 66 3K 3K 78643K 133 0 ether_multi 1 0K 0K 78643K 5 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 233 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 120 23K 24K 78643K 1806 0 UVM aobj 18 4K 4K 78643K 20 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 32 0 NDP 13 0K 0K 78643K 35 0 temp 100 3037K 3101K 78643K 6709 0 kqueue 3 4K 13K 78643K 11 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 7 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 37 0 35 1 0 1 1 0 8 0 rtentry 112 88 0 49 2 0 2 2 0 8 0 unpcb 120 164 0 154 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 78 0 78 1 1 0 1 0 8 0 tcpcb 544 70 0 66 1 0 1 1 0 8 0 inpcb 280 287 0 280 4 3 1 2 0 8 0 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 16 0 14 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 1 0 1 1 1 0 1 0 482 0 pffrnode 88 1 0 1 1 1 0 1 0 8 0 pffrent 40 2 0 2 1 1 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 30 0 12 1 0 1 1 0 8 0 pfstkey 112 30 0 12 1 0 1 1 0 8 0 pfstate 328 30 0 12 2 0 2 2 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 256 428 0 272 14 2 12 13 0 8 1 art_table 32 429 0 272 2 0 2 2 0 8 0 art_node 16 87 0 50 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 0 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 11 0 1 1 0 1 1 0 8 0 shmpl 112 18 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1789 0 379 89 0 89 89 0 8 0 ffsino 272 1789 0 379 96 1 95 95 0 8 0 nchpl 144 2337 0 741 60 0 60 60 0 8 0 uvmvnodes 72 2085 0 0 38 0 38 38 0 8 0 vnodes 208 2085 0 0 110 0 110 110 0 8 0 namei 1024 6747 0 6747 1 0 1 1 0 8 1 percpumem 16 40 0 8 1 0 1 1 0 8 0 scxspl 192 6743 0 6743 8 7 1 7 0 8 1 plimitpl 152 29 0 21 1 0 1 1 0 8 0 sigapl 424 480 0 448 4 0 4 4 0 8 0 futexpl 56 4552 0 4552 1 0 1 1 0 8 1 knotepl 112 68 0 49 1 0 1 1 0 8 0 kqueuepl 144 43 0 41 1 0 1 1 0 8 0 pipelkpl 48 111 0 101 1 0 1 1 0 8 0 pipepl 120 222 0 203 1 0 1 1 0 8 0 fdescpl 496 464 0 448 3 0 3 3 0 8 0 filepl 152 2822 0 2721 5 0 5 5 0 8 1 lockfpl 104 67 0 66 1 0 1 1 0 8 0 lockfspl 48 25 0 24 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 12 1 0 1 1 0 8 0 ucredpl 96 270 0 260 1 0 1 1 0 8 0 zombiepl 144 448 0 448 1 0 1 1 0 8 1 processpl 984 480 0 448 5 0 5 5 0 8 0 procpl 624 1033 0 991 4 0 4 4 0 8 0 sosppl 128 9 0 9 3 3 0 1 0 8 0 sockpl 400 491 0 472 5 2 3 4 0 8 1 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 171 0 0 21 0 21 21 0 8 0 mtagpl 80 143 0 0 3 0 3 3 0 8 0 mbufpl 256 479 0 0 29 0 29 29 0 8 0 bufpl 280 4318 0 133 299 0 299 299 0 8 0 anonpl 16 57882 0 43065 73 8 65 72 0 124 5 anonpl: pool(0xffffffff82681288:anonpl): free list modified: page 0xfffffd806530f000; item ordinal 0; addr 0xfffffd806530f010 (p 0xfffffd806530f000); offset 0x0=0x0 anonpl: pool(0xffffffff82681288:anonpl): page inconsistency: page 0xfffffd806530f000; item ordinal 1; addr 0xffd453889178391e amapchunkpl 152 2445 0 2307 11 4 7 10 0 158 0 amappl16 192 2070 0 1284 47 7 40 44 0 8 0 amappl15 184 165 0 162 1 0 1 1 0 8 0 amappl14 176 93 0 87 1 0 1 1 0 8 0 amappl13 168 94 0 91 1 0 1 1 0 8 0 amappl12 160 9 0 5 2 1 1 1 0 8 0 amappl11 152 57 0 42 1 0 1 1 0 8 0 amappl10 144 21 0 14 1 0 1 1 0 8 0 amappl9 136 384 0 383 1 0 1 1 0 8 0 amappl8 128 381 0 338 2 0 2 2 0 8 0 amappl7 120 116 0 105 1 0 1 1 0 8 0 amappl6 112 25 0 20 1 0 1 1 0 8 0 amappl5 104 299 0 281 1 0 1 1 0 8 0 amappl4 96 560 0 529 1 0 1 1 0 8 0 amappl3 88 179 0 172 1 0 1 1 0 8 0 amappl2 80 2927 0 2858 2 0 2 2 0 8 0 amappl1 72 20086 0 19644 23 13 10 18 0 8 0 amappl 80 1284 0 1239 2 0 2 2 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 19 0 2 1 0 1 1 0 8 0 uaddrrnd 24 464 0 448 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 464 0 448 1 0 1 1 0 8 0 vmmpekpl 168 7589 0 7558 2 0 2 2 0 8 0 vmmpepl 168 63047 0 61095 133 39 94 128 0 357 9 vmsppl 368 463 0 448 2 0 2 2 0 8 0 pdppl 4096 936 0 896 6 0 6 6 0 8 0 pvpl 32 190696 0 172734 171 9 162 169 0 265 17 pmappl 232 463 0 448 2 1 1 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 281 0 8 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(ffffffff8226e689) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff82681288,2,ffff8000223a7538) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82681288,2) at pool_get+0xeb sys/kern/subr_pool.c:581 uvm_analloc() at uvm_analloc+0x29 sys/uvm/uvm_anon.c:64 uvm_fault(fffffd807f0008a0,203c7000,0,2) at uvm_fault+0xfb6 sys/uvm/uvm_fault.c:1114 pageflttrap(ffff8000223a78d0,0) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 kerntrap(ffff8000223a78d0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 ffs_read(ffff8000223a7ac0) at ffs_read+0x3d2 sys/ufs/ffs/ffs_vnops.c:258 VOP_READ(fffffd80653f2020,ffff8000223a7cf0,0,fffffd807f7bf840) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd80688a0e58,ffff8000223a7cf0,1) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020ed9128,3,ffff8000223a7cf0,1,ffff8000223a7de0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_preadv(ffff800020ed9128,ffff8000223a7d98,ffff8000223a7de0) at sys_preadv+0xb8 sys/kern/vfs_syscalls.c:3276 syscall(ffff8000223a7e60) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000223a7e60) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x383190cd8f0, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020e00ff0) 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 __sanitizer_cov_trace_cmp4(91439,9143a) at __sanitizer_cov_trace_cmp4+0x50 trace_cmp sys/dev/kcov.c:139 [inline] __sanitizer_cov_trace_cmp4(91439,9143a) at __sanitizer_cov_trace_cmp4+0x50 sys/dev/kcov.c:170 __mp_lock(ffffffff8268fda0) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8268fda0) at __mp_lock+0x139 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff8268fda0,1) 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(ffff800020f83150,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020f83150,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020f83150,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff8256a668,120,ffffffff821eaf36,2) at tsleep+0x1cc sys/kern/kern_synch.c:155 sys_nanosleep(ffff800020e6c4e8,ffff800020f83280,ffff800020f832d0) at sys_nanosleep+0x205 sys/kern/kern_time.c:298 syscall(ffff800020f83350) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020f83350) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc5ac0, count: 2 ddb{1}> trace x86_ipi_db(ffff800020e00ff0) 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 __sanitizer_cov_trace_cmp4(91439,9143a) at __sanitizer_cov_trace_cmp4+0x50 trace_cmp sys/dev/kcov.c:139 [inline] __sanitizer_cov_trace_cmp4(91439,9143a) at __sanitizer_cov_trace_cmp4+0x50 sys/dev/kcov.c:170 __mp_lock(ffffffff8268fda0) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8268fda0) at __mp_lock+0x139 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff8268fda0,1) 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(ffff800020f83150,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020f83150,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020f83150,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff8256a668,120,ffffffff821eaf36,2) at tsleep+0x1cc sys/kern/kern_synch.c:155 sys_nanosleep(ffff800020e6c4e8,ffff800020f83280,ffff800020f832d0) at sys_nanosleep+0x205 sys/kern/kern_time.c:298 syscall(ffff800020f83350) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020f83350) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc5ac0, count: -13