login: uvm_fault(0xfffffd807501b038, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82b1be78 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a2cd910 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82b1be78 Starting stack trace... panic(ffffffff833a7bb0) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a2cd860) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000147b000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff80003c4c9cd8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80003c4c9cd8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a2cda10) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8058ee0d80,81,fffffd80097fb6e8,ffff80003c4c9cd8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bc20700,ffff80003c4c9cd8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bc20700,ffff80003c4c9cd8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bc20700,ffff80003c4c9cd8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806bc20700,ffff80003c4c9cd8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c4c9cd8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c4c9cd8,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c4c9cd8,ffff80002a2cdd80,ffff80002a2cdcd0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a2cdd80) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2cdd80) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7333529d3550, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 80929 92518 0 0 0 1 syz-executor 139086 22838 0 0x14000 0x200 0 reaper proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x780b1ebbf2e0, count: 14 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: uvm_fault(0xfffffd807501b038, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x780b1ebbf2e0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a355540 rbx 0 rdx 0 rcx 0xffff80003c4c8fe0 rax 0x2a r8 0xffff80002a355470 r9 0x1 r10 0x579e721603ce56b7 r11 0x23b0fce882a40830 r12 0 r13 0xffffffff817a5b88 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff820704c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a3554c0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=80929 pid=92518 tcnt=3 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c4c8050,0xffff80003c4c8ac0 process=0xffff8000ffff75a8 user=0xffff80002a350000, vmspace=0xfffffd806ef815c0 estcpu=36, cpticks=5, pctcpu=0.0, user=4, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *92518 80929 81998 0 7 0 syz-executor 92518 419394 81998 0 3 0x4000080 kqread syz-executor 92518 12689 81998 0 2 0x4000000 syz-executor 29792 437729 79538 0 3 0x80 nanoslp syz-executor 29792 388295 79538 0 3 0x4000080 ttyopn syz-executor 29792 306070 79538 0 3 0x4000080 fsleep syz-executor 89775 327481 78946 0 3 0x80 nanoslp syz-executor 89775 455181 78946 0 3 0x4000080 ttyretype syz-executor 69452 496626 41888 0 3 0x80 nanoslp syz-executor 69452 253322 41888 0 3 0x4000080 piperd syz-executor 69452 25228 41888 0 3 0x4000080 fsleep syz-executor 69452 61086 41888 0 3 0x4000080 fsleep syz-executor 28011 44554 16368 0 3 0x80 nanoslp syz-executor 28011 311233 16368 0 3 0x4000080 pipewr syz-executor 15501 289495 16204 0 3 0x82 piperd syz-executor 79937 38114 1 0 3 0x100083 ttyin getty 84977 7625 0 0 3 0x14200 acct acct 79538 474796 16204 0 3 0x82 nanoslp syz-executor 41888 415051 16204 0 3 0x82 nanoslp syz-executor 6859 89583 16204 0 3 0x82 nanoslp syz-executor 25736 159109 16204 0 3 0x82 piperd syz-executor 81998 316221 16204 0 3 0x82 nanoslp syz-executor 16368 162671 16204 0 3 0x82 nanoslp syz-executor 16356 363350 0 0 3 0x14200 bored sosplice 78946 479123 16204 0 3 0x82 nanoslp syz-executor 16204 47404 8842 0 2 0x2 syz-executor 8842 29886 91695 0 3 0x10008a sigsusp ksh 91695 197484 89719 0 3 0x98 kqread sshd-session 89719 275715 671 0 3 0x92 kqread sshd-session 671 243259 1 0 3 0x88 kqread sshd 75590 32087 29709 74 3 0x1100092 bpf pflogd 29709 197522 1 0 3 0x80 sbwait pflogd 16563 153133 74879 73 3 0x1100090 kqread syslogd 74879 405883 1 0 3 0x100082 sbwait syslogd 9967 73149 1 0 3 0x100080 kqread resolvd 74286 247605 0 0 3 0x14200 bored smr 90869 213759 0 0 2 0x14200 zerothread 55588 239335 0 0 3 0x14200 aiodoned aiodoned 28248 85959 0 0 3 0x14200 syncer update 52611 299669 0 0 3 0x14200 cleaner cleaner 22838 139086 0 0 7 0x14200 reaper 17574 505373 0 0 3 0x14200 pgdaemon pagedaemon 39314 175068 0 0 3 0x14200 bored viomb 60819 278228 0 0 3 0x40014200 acpi0 acpi0 77776 415708 0 0 3 0x40014200 idle1 10660 177056 0 0 3 0x14200 bored softnet7 20113 22160 0 0 3 0x14200 bored softnet6 69526 241770 0 0 3 0x14200 bored softnet5 16681 71241 0 0 3 0x14200 bored softnet4 70665 188354 0 0 3 0x14200 bored softnet3 35477 312809 0 0 3 0x14200 bored softnet2 11188 285708 0 0 3 0x14200 bored softnet1 42350 234542 0 0 3 0x14200 bored softnet0 22668 181417 0 0 3 0x14200 smrbar systqmp 49537 471681 0 0 3 0x14200 bored systq 67775 270793 0 0 3 0x14200 tmoslp softclockmp 15701 283911 0 0 3 0x40014200 tmoslp softclock 7724 481575 0 0 3 0x40014200 idle0 1 303628 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff838e3780) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 uvm_pmr_freepageq+0x15c sys/uvm/uvm_pmemrange.c:1371 #4 km_free+0x36b sys/uvm/uvm_km.c:827 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1aa sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 Process 22668 (systqmp) thread 0xffff8000ffffe000 (181417) shared rwlock systqmp r = 0 (0xffffffff83791a18) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10261 11096K 12482K 166960K 16139 0 pcb 18 17K 22K 166960K 686 0 rtable 220 12K 13K 166960K 1080 0 pf 42 18K 67486K 166960K 434 0 ifaddr 48 10K 11K 166960K 287 0 ifgroup 68 2K 3K 166960K 506 0 sysctl 4 1K 9K 166960K 94 0 counters 74 37K 38K 166960K 496 0 ioctlops 0 0K 8K 166960K 2526 0 iov 0 0K 32K 166960K 241 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1516 95K 96K 166960K 5227 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 37 0 VM map 2 1K 1K 166960K 2 0 sem 14 60K 60K 166960K 255 0 dirhash 12 2K 3K 166960K 93 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 244K 166960K 3931 0 sigio 0 0K 0K 166960K 81 0 proc 66 83K 164K 166960K 1401 0 subproc 72 4K 4K 166960K 219 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 436 0 in_multi 78 6K 7K 166960K 422 0 ether_multi 1 0K 0K 166960K 47 0 mrt 2 0K 0K 166960K 26 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 1099 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 216 144K 184K 166960K 38434 0 UVM aobj 27 2K 2K 166960K 29 0 pinsyscall 35 70K 105K 166960K 5439 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 336 0 NDP 17 0K 2K 166960K 201 0 temp 110 8652K 8788K 166960K 202824 0 kqueue 8 13K 32K 166960K 754 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 493 0 492 5 4 1 3 0 8 0 rtentry 176 395 0 316 5 0 5 5 0 8 0 unpcb 144 2571 0 2561 24 22 2 6 0 8 1 syncache 336 13 0 13 6 6 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 1648 0 1641 28 21 7 7 0 8 5 arp 128 47 0 34 1 0 1 1 0 8 0 inpcb 328 4955 0 4946 46 40 6 13 0 8 4 nd6 144 57 0 45 1 0 1 1 0 8 0 pkpcb 40 25 0 25 8 7 1 1 0 8 1 kcovpl 48 24 0 16 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 148 0 148 6 5 1 1 0 8 1 pppxif 1504 29 0 29 8 8 0 2 0 8 0 pffrag 232 71 0 65 1 0 1 1 0 482 0 pffrnode 88 67 0 61 1 0 1 1 0 8 0 pffrent 40 138 0 132 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 6 0 6 4 4 0 1 0 8 0 pfstitem 24 214 0 118 1 0 1 1 0 8 0 pfstkey 128 214 0 118 4 0 4 4 0 8 0 pfstate 384 214 0 118 11 0 11 11 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 7 0 7 5 5 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1631 0 1283 39 15 24 29 0 8 0 art_table 40 1635 0 1283 5 0 5 5 0 8 0 art_node 32 390 0 321 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 14 1 0 1 1 0 8 0 semupl 112 3 0 3 3 3 0 1 0 8 0 semapl 112 248 0 236 1 0 1 1 0 8 0 shmpl 112 26 0 2 1 0 1 1 0 8 0 dirhash 1024 72 0 55 3 0 3 3 0 8 0 dino2pl 256 8896 0 7349 98 1 97 97 0 8 0 ffsino 296 8896 0 7349 120 0 120 120 0 8 0 nchpl 144 14260 0 13656 64 39 25 64 0 8 0 rtmask 32 21 0 21 6 6 0 1 0 8 0 uvmvnodes 80 11017 0 0 225 0 225 225 0 8 0 vnodes 216 11017 0 0 613 0 613 613 0 8 0 namei 1024 51479 0 51479 10 8 2 2 0 8 2 percpumem 16 263 0 211 1 0 1 1 0 8 0 kstatmem 264 310 0 274 4 1 3 3 0 8 0 scsiplug 72 11 0 11 7 7 0 1 0 8 0 scxspl 216 104643 0 104643 14 13 1 8 1 8 1 plimitpl 152 1036 0 1018 1 0 1 1 0 8 0 sigapl 424 4200 0 4149 9 1 8 9 0 8 0 knotepl 120 827 0 0 24 0 24 24 0 8 0 kqueuepl 224 1667 0 1660 18 17 1 5 0 8 0 pipepl 344 659 0 630 18 14 4 9 0 8 0 fdescpl 528 4147 0 4120 3 0 3 3 0 8 0 filepl 160 30902 0 30695 48 34 14 20 0 8 2 lockfpl 104 2077 0 2075 4 2 2 2 0 8 1 lockfspl 48 729 0 727 1 0 1 1 0 8 0 sessionpl 144 49 0 41 1 0 1 1 0 8 0 pgrppl 48 125 0 109 1 0 1 1 0 8 0 ucredpl 104 5830 0 5819 1 0 1 1 0 8 0 zombiepl 144 5789 0 5788 2 1 1 1 0 8 0 processpl 1248 4200 0 4149 6 1 5 6 0 8 0 procpl 664 10674 0 10614 11 4 7 9 0 8 0 sosppl 168 25 0 25 7 6 1 1 0 8 1 sockpl 752 8180 0 8160 78 69 9 20 0 8 6 mcl64k 65536 25 0 0 4 0 4 4 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 133 0 0 17 0 17 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 52 0 0 5 0 5 5 0 8 0 mtagpl 96 81 0 0 2 0 2 2 0 8 0 mbufpl 256 1238 0 0 75 0 75 75 0 8 0 bufpl 280 42843 0 36525 452 0 452 452 0 8 0 anonpl 32 20010 0 0 162 1 161 161 0 246 0 amapchunkpl 152 130727 0 130037 74 42 32 40 0 158 0 amappl16 200 14762 0 14646 123 99 24 40 0 8 8 amappl15 192 7 0 7 2 2 0 1 0 8 0 amappl14 184 162 0 153 1 0 1 1 0 8 0 amappl13 176 2 0 2 2 2 0 1 0 8 0 amappl12 168 5084 0 5057 3 0 3 3 0 8 0 amappl11 160 49 0 41 1 0 1 1 0 8 0 amappl10 152 22 0 22 3 3 0 1 0 8 0 amappl9 144 287 0 285 1 0 1 1 0 8 0 amappl8 136 31 0 28 1 0 1 1 0 8 0 amappl7 128 150 0 140 1 0 1 1 0 8 0 amappl6 120 343 0 339 1 0 1 1 0 8 0 amappl5 112 205 0 197 1 0 1 1 0 8 0 amappl4 104 342 0 324 1 0 1 1 0 8 0 amappl3 96 26491 0 26398 5 1 4 4 0 8 0 amappl2 88 936 0 885 2 0 2 2 0 8 0 amappl1 80 26040 0 25533 17 4 13 15 0 8 0 amappl 88 36793 0 36633 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 3 0 2 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 258 0 258 4 4 0 1 0 8 0 dma64 64 7 0 7 2 2 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 28 0 2 1 0 1 1 0 8 0 uaddrrnd 24 4147 0 4120 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4147 0 4120 1 0 1 1 0 8 0 vmmpekpl 168 32396 0 32328 4 0 4 4 0 8 0 vmmpepl 168 266764 0 265022 154 50 104 122 0 357 0 vmsppl 488 4146 0 4120 8 3 5 5 0 8 0 rwobjpl 80 79560 0 67636 245 0 245 245 0 8 0 pdppl 4096 8302 0 8240 122 54 68 86 0 8 6 pvpl 32 32886 0 0 266 1 265 265 0 265 0 pmappl 256 4146 0 4120 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 424 0 112 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8386bff0) 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 __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x2e kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x2e sys/dev/kcov.c:230 _kernel_lock_held() at _kernel_lock_held+0x47 sys/kern/kern_lock.c:-1 msleep_nsec(ffffffff837c8478,ffffffff837c8440,4,ffffffff833851f8,ffffffffffffffff) at msleep_nsec+0x1a0 sys/kern/kern_synch.c:202 reaper(ffff8000ffffc538) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 8 ddb{0}> trace x86_ipi_db(ffffffff8386bff0) 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 __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x2e kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x2e sys/dev/kcov.c:230 _kernel_lock_held() at _kernel_lock_held+0x47 sys/kern/kern_lock.c:-1 msleep_nsec(ffffffff837c8478,ffffffff837c8440,4,ffffffff833851f8,ffffffffffffffff) at msleep_nsec+0x1a0 sys/kern/kern_synch.c:202 reaper(ffff8000ffffc538) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x780b1ebbf2e0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x780b1ebbf2e0, count: -1