uvm_fault(0xfffffd805e5a0028, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff818e3958 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003c40c890 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff818e3958 Starting stack trace... panic(ffffffff8339ec05) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c40c7e0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000015f4000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff8000ffffd9f8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff8000ffffd9f8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c40c990) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064374b38,81,fffffd80097fb340,ffff8000ffffd9f8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8067059070,ffff8000ffffd9f8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8067059070,ffff8000ffffd9f8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8067059070,ffff8000ffffd9f8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8067059070,ffff8000ffffd9f8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000ffffd9f8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffffd9f8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000ffffd9f8,ffff80003c40cd00,ffff80003c40cc50) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c40cd00) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c40cd00) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x718a3457bcf0, 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 *320126 20318 0 0 0 1 syz-executor 464713 22772 0 0 0 0 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7737b64fee60, 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(0xfffffd805e5a0028, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7737b64fee60, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c4539d0 rbx 0 rdx 0 rcx 0xffff8000ffff22b0 rax 0x2a r8 0xffff80003c453900 r9 0x1 r10 0x39e6083371eccc4d r11 0x2c546730b7bcceba r12 0 r13 0xffffffff82bac068 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff817054c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c453950 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=320126 pid=20318 tcnt=2 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=0xffff8000ffff2d10,0xffff8000ffff34e8 process=0xffff8000fffece88 user=0xffff80003c44e000, vmspace=0xfffffd806b9ae7b8 estcpu=36, cpticks=5, pctcpu=0.0, user=4, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *20318 320126 7333 0 7 0 syz-executor 20318 246383 7333 0 2 0x4000000 syz-executor 22772 464713 66003 0 7 0 syz-executor 22772 103584 66003 0 3 0x4000080 fsleep syz-executor 90646 408056 27823 60929 3 0x90 nanoslp syz-executor 90646 414081 27823 60929 3 0x4000090 kqread syz-executor 90646 470236 27823 60929 3 0x4000090 fsleep syz-executor 34711 85715 0 0 3 0x14200 acct acct 27477 277495 1 0 3 0x100083 ttyin getty 66003 20008 41703 0 3 0x82 nanoslp syz-executor 27823 11356 41703 0 2 0x3 syz-executor 50806 5907 41703 0 2 0x2 syz-executor 6640 409898 41703 0 2 0x3 syz-executor 7269 367543 41703 0 3 0x82 nanoslp syz-executor 7333 190622 41703 0 3 0x82 nanoslp syz-executor 81034 195409 41703 0 2 0x2 syz-executor 67031 90348 41703 0 3 0x82 wait syz-executor 27841 471467 0 0 3 0x14200 bored sosplice 41703 76940 52705 0 3 0x82 kqread syz-executor 52705 294795 35371 0 3 0x10008a sigsusp ksh 35371 122528 83806 0 3 0x98 kqread sshd-session 83806 293260 62516 0 3 0x92 kqread sshd-session 62516 177508 1 0 3 0x88 kqread sshd 73452 385158 12202 74 3 0x1100092 bpf pflogd 12202 298730 1 0 3 0x80 sbwait pflogd 73707 73775 78819 73 3 0x1100090 kqread syslogd 78819 262811 1 0 3 0x100082 sbwait syslogd 53777 89981 1 0 3 0x100080 kqread resolvd 64355 378323 91636 77 3 0x100092 kqread dhcpleased 59208 239076 91636 77 3 0x100092 kqread dhcpleased 91636 389857 1 0 3 0x80 kqread dhcpleased 9771 417678 0 0 3 0x14200 bored smr 75967 75460 0 0 2 0x14200 zerothread 672 358033 0 0 3 0x14200 aiodoned aiodoned 7874 465478 0 0 3 0x14200 syncer update 55970 379832 0 0 3 0x14200 cleaner cleaner 69258 479131 0 0 3 0x14200 reaper reaper 27494 490333 0 0 3 0x14200 pgdaemon pagedaemon 62024 19889 0 0 3 0x14200 bored viomb 88126 44391 0 0 3 0x40014200 acpi0 acpi0 34376 101653 0 0 3 0x40014200 idle1 33077 35549 0 0 3 0x14200 bored softnet1 44444 172355 0 0 3 0x14200 netlock softnet0 96119 471468 0 0 3 0x14200 smrbar systqmp 39632 514555 0 0 3 0x14200 bored systq 83763 223652 0 0 3 0x14200 tmoslp softclockmp 37944 34119 0 0 3 0x40014200 tmoslp softclock 46132 122722 0 0 3 0x40014200 idle0 1 466806 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 20318 (syz-executor) thread 0xffff8000ffff34d8 (246383) Process 50806 (syz-executor) thread 0xffff8000fffe8d20 (5907) Process 96119 (systqmp) thread 0xffff8000ffffea60 (471468) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10270 11326K 12428K 166960K 17493 0 pcb 18 16K 18K 166960K 1096 0 rtable 168 11K 11K 166960K 1130 0 pf 43 19K 67487K 166960K 455 0 ifaddr 32 6K 8K 166960K 277 0 ifgroup 57 2K 3K 166960K 502 0 sysctl 4 1K 9K 166960K 102 0 counters 70 37K 38K 166960K 554 0 ioctlops 0 0K 4K 166960K 2554 0 iov 0 0K 28K 166960K 447 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1521 96K 96K 166960K 5517 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 21 0 VM map 2 1K 1K 166960K 2 0 sem 22 33K 33K 166960K 236 0 dirhash 12 2K 2K 166960K 84 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 4748 0 sigio 0 0K 0K 166960K 234 0 proc 74 115K 163K 166960K 1360 0 subproc 72 4K 4K 166960K 210 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1066 0 in_multi 47 3K 7K 166960K 390 0 ether_multi 1 0K 0K 166960K 49 0 mrt 1 0K 0K 166960K 29 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 1385 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 9 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 243 164K 175K 166960K 44534 0 UVM aobj 61 6K 6K 166960K 69 0 pinsyscall 42 84K 102K 166960K 6172 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 315 0 NDP 13 0K 2K 166960K 211 0 temp 81 8652K 22476K 166960K 203180 0 kqueue 14 22K 30K 166960K 862 0 SYN cache 2 8K 16K 166960K 3 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 120 604 0 601 7 6 1 3 0 8 0 rtentry 176 380 0 324 5 0 5 5 0 8 0 unpcb 144 3440 0 3422 30 29 1 6 0 8 0 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 1897 0 1893 34 33 1 7 0 8 0 arp 136 61 0 52 1 0 1 1 0 8 0 inpcb 328 5513 0 5505 54 45 9 14 0 8 7 nd6 144 64 0 53 1 0 1 1 0 8 0 pkpcb 40 141 0 141 8 7 1 1 0 8 1 kcovpl 48 23 0 15 1 0 1 1 0 8 0 ppxss 1192 188 0 187 6 5 1 1 0 8 0 pppxif 1504 23 0 23 8 8 0 1 0 8 0 pfstscr 40 6 0 4 1 0 1 1 0 8 0 pffrag 232 43 0 32 1 0 1 1 0 482 0 pffrnode 88 38 0 30 1 0 1 1 0 8 0 pffrent 40 163 0 152 1 0 1 1 0 8 0 pfosfp 40 1431 0 1428 5 4 1 5 0 8 0 pfosfpen 112 1431 0 1428 21 20 1 21 0 8 0 pfrktable 1344 12 0 12 4 4 0 1 0 8 0 pfanchor 1288 1 0 1 1 1 0 1 0 8 0 pftag 88 1 0 1 1 1 0 1 0 8 0 pfstitem 24 293 0 185 1 0 1 1 0 8 0 pfstkey 128 303 0 197 4 0 4 4 0 8 0 pfstate 384 296 0 190 12 0 12 12 0 8 0 pfrule 1344 41 0 35 2 1 1 2 0 8 0 rttmr 136 7 0 7 6 6 0 1 0 8 0 art_heap8 4096 6 0 1 6 1 5 6 0 8 0 art_heap4 256 1425 0 1200 38 19 19 28 0 8 0 art_table 40 1431 0 1201 5 0 5 5 0 8 0 art_node 32 376 0 332 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 227 0 207 1 0 1 1 0 8 0 shmpl 112 66 0 8 2 0 2 2 0 8 0 dirhash 1024 66 0 49 3 0 3 3 0 8 0 dino2pl 256 10085 0 8544 97 0 97 97 0 8 0 ffsino 296 10086 0 8544 119 0 119 119 0 8 0 nchpl 144 16414 0 14670 65 0 65 65 0 8 0 rtmask 32 36 0 36 7 7 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 58205 0 58203 6 5 1 2 0 8 0 percpumem 16 292 0 242 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0 kstatmem 264 334 0 304 9 6 3 3 0 8 0 acpiwqpl 32 11 0 11 1 0 1 1 1 8 1 scsiplug 72 19 0 19 12 11 1 1 0 8 1 scxspl 216 107546 0 107546 28 27 1 8 1 8 1 plimitpl 152 1222 0 1204 1 0 1 1 0 8 0 sigapl 424 5002 0 4953 9 2 7 8 0 8 0 knotepl 120 679 0 0 20 0 20 20 0 8 0 kqueuepl 224 2048 0 2038 22 20 2 5 0 8 1 pipepl 344 845 0 817 21 18 3 9 0 8 0 fdescpl 528 4948 0 4917 3 0 3 3 0 8 0 filepl 160 34919 0 34687 55 41 14 19 0 8 0 lockfpl 104 2147 0 2145 3 2 1 2 0 8 0 lockfspl 48 834 0 832 1 0 1 1 0 8 0 sessionpl 144 39 0 30 1 0 1 1 0 8 0 pgrppl 48 163 0 146 1 0 1 1 0 8 0 ucredpl 104 5107 0 5093 1 0 1 1 0 8 0 zombiepl 144 7069 0 7066 2 1 1 1 0 8 0 processpl 1232 5002 0 4953 9 4 5 6 0 8 0 procpl 664 12967 0 12913 8 2 6 8 0 8 0 sosppl 168 37 0 37 9 8 1 1 0 8 1 sockpl 752 9895 0 9866 80 68 12 19 0 8 7 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 17 0 0 3 1 2 3 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 128 0 0 14 2 12 14 0 8 0 mtagpl 96 70 0 0 2 0 2 2 0 8 0 mbufpl 256 2421 0 0 147 0 147 147 0 8 0 bufpl 280 45404 0 39261 441 1 440 440 0 8 0 anonpl 32 16095 0 0 131 1 130 130 0 246 0 amapchunkpl 152 154613 0 154065 66 37 29 34 0 158 1 amappl16 200 18236 0 18166 136 111 25 39 0 8 7 amappl15 192 22 0 22 1 1 0 1 0 8 0 amappl14 184 143 0 131 1 0 1 1 0 8 0 amappl13 176 11 0 11 3 2 1 1 0 8 1 amappl12 168 5828 0 5798 3 1 2 2 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 273 0 271 1 0 1 1 0 8 0 amappl8 136 35 0 32 1 0 1 1 0 8 0 amappl7 128 139 0 126 1 0 1 1 0 8 0 amappl6 120 326 0 322 1 0 1 1 0 8 0 amappl5 112 186 0 176 1 0 1 1 0 8 0 amappl4 104 322 0 300 1 0 1 1 0 8 0 amappl3 96 27858 0 27762 7 3 4 4 0 8 0 amappl2 88 5237 0 5158 2 0 2 2 0 8 0 amappl1 80 28073 0 27464 15 1 14 14 0 8 0 amappl 88 42859 0 42692 5 0 5 5 0 92 0 dma32768 32768 2 0 2 2 2 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 1 0 0 1 0 1 1 0 8 0 dma256 256 11 0 11 5 5 0 1 0 8 0 dma128 128 257 0 257 5 5 0 1 0 8 0 dma64 64 8 0 8 3 3 0 1 0 8 0 dma32 32 9 0 9 3 3 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 68 0 8 2 0 2 2 0 8 0 uaddrrnd 24 4948 0 4917 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4948 0 4917 1 0 1 1 0 8 0 vmmpekpl 168 37497 0 37434 5 1 4 4 0 8 0 vmmpepl 168 313694 0 311658 174 61 113 124 0 357 4 vmsppl 488 4947 0 4917 6 1 5 5 0 8 0 rwobjpl 80 85367 0 78390 170 17 153 157 0 8 1 pdppl 4096 9904 0 9834 126 54 72 84 0 8 2 pvpl 32 24095 0 0 194 1 193 193 0 265 0 pmappl 256 4947 0 4917 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 509 0 127 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83821ff0) 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(ffffffff8390bd68) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8390bd68) at __mp_lock+0x192 sys/kern/kern_lock.c:165 scsi_xs_put(fffffd80796bc360) at scsi_xs_put+0x51 scsi_iopool_put sys/scsi/scsi_base.c:270 [inline] scsi_xs_put(fffffd80796bc360) at scsi_xs_put+0x51 scsi_io_put sys/scsi/scsi_base.c:499 [inline] scsi_xs_put(fffffd80796bc360) at scsi_xs_put+0x51 sys/scsi/scsi_base.c:787 scsi_done(fffffd80796bc360) at scsi_done+0x40 sys/scsi/scsi_base.c:1496 vioscsi_vq_done(ffff8000000a3668) at vioscsi_vq_done+0xe1 sys/dev/pv/vioscsi.c:-1 intr_handler(ffff80002a39c0f0,ffff800000079a80) at intr_handler+0x125 sys/arch/amd64/amd64/intr.c:563 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff8390bd68) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8390bd68) at __mp_lock+0x199 sys/kern/kern_lock.c:165 uvm_fault(fffffd806b9ae018,e609c2e7000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:700 upageflttrap(ffff80002a39c480,e609c2e7000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002a39c480) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7697acbe24f0, count: 1 ddb{0}> trace x86_ipi_db(ffffffff83821ff0) 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(ffffffff8390bd68) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8390bd68) at __mp_lock+0x192 sys/kern/kern_lock.c:165 scsi_xs_put(fffffd80796bc360) at scsi_xs_put+0x51 scsi_iopool_put sys/scsi/scsi_base.c:270 [inline] scsi_xs_put(fffffd80796bc360) at scsi_xs_put+0x51 scsi_io_put sys/scsi/scsi_base.c:499 [inline] scsi_xs_put(fffffd80796bc360) at scsi_xs_put+0x51 sys/scsi/scsi_base.c:787 scsi_done(fffffd80796bc360) at scsi_done+0x40 sys/scsi/scsi_base.c:1496 vioscsi_vq_done(ffff8000000a3668) at vioscsi_vq_done+0xe1 sys/dev/pv/vioscsi.c:-1 intr_handler(ffff80002a39c0f0,ffff800000079a80) at intr_handler+0x125 sys/arch/amd64/amd64/intr.c:563 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff8390bd68) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8390bd68) at __mp_lock+0x199 sys/kern/kern_lock.c:165 uvm_fault(fffffd806b9ae018,e609c2e7000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:700 upageflttrap(ffff80002a39c480,e609c2e7000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002a39c480) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7697acbe24f0, count: -14 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: 0x7737b64fee60, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7737b64fee60, count: -1