login: uvm_fault(0xffffffff835e7fb8, 0xffff800029082004, 0, 1) -> d fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff810e3a61 cs 8 rflags 10202 cr2 ffff800029082004 cpl 0 rsp ffff80003c5b41c0 gsbase 0xffff800029b5bff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff810e3a61 Starting stack trace... panic(ffffffff830473a3) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c5b4110) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b ufs_lookup() at ufs_lookup+0x5e1 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd805c9f6cb8,ffff80003c5b43b8,ffff80003c5b4358) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 unveil_find_cover(fffffd805c9f6cb8,ffff8000ffff6f68) at unveil_find_cover+0x16d sys/kern/kern_unveil.c:277 unveil_start_relative(ffff8000ffff6f68,ffff80003c5b4528,fffffd805c9f6cb8) at unveil_start_relative+0x14b sys/kern/kern_unveil.c:606 namei(ffff80003c5b4528) at namei+0x54a sys/kern/vfs_lookup.c:222 sys_unveil(ffff8000ffff6f68,ffff80003c5b4710,ffff80003c5b4660) at sys_unveil+0x319 sys/kern/vfs_syscalls.c:997 syscall(ffff80003c5b4710) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5b4710) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf3f498e42f0, count: 246 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x680 TID PID UID PRFLAGS PFLAGS CPU COMMAND *202823 20343 0 0 0 1 syz-executor 49533 18923 0 0x14000 0x40000200 0 softclock proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x73e875a6c3d0, 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xffffffff835e7fb8, 0xffff800029082004, 0, 1) -> d ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x73e875a6c3d0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c180240 rbx 0 rdx 0 rcx 0xffff8000ffff67d0 rax 0x2a r8 0xffff80003c180170 r9 0x1 r10 0xec52a269b6e4d9e6 r11 0xa466b458a1e3f2bc r12 0 r13 0xffffffff815c5178 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff8258f4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c1801c0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{1}> show proc PROC (syz-executor) tid=202823 pid=20343 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff6a58,0xffff8000ffff6558 process=0xffff80003c666240 user=0xffff80003c17b000, vmspace=0xfffffd806c0ecc90 estcpu=36, cpticks=5, pctcpu=0.0, user=3, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 59716 518773 26757 0 2 0 syz-executor 99567 308114 92666 0 2 0 syz-executor *20343 202823 63319 0 7 0 syz-executor 20343 378358 63319 0 3 0x4000080 fsleep syz-executor 59667 184172 38033 0 2 0x1000000 syz-executor 59667 157798 38033 0 3 0x5000000 sbar syz-executor 8476 71775 9039 0 2 0 syz-executor 8476 355991 9039 0 3 0x4000080 ttyout syz-executor 8476 421602 9039 0 2 0x4000000 syz-executor 70811 45669 91679 0 2 0 syz-executor 70811 417518 91679 0 3 0x4000080 fsleep syz-executor 8249 499433 72679 0 2 0 syz-executor 8249 341644 72679 0 3 0x4000080 ttyout syz-executor 8249 472328 72679 0 3 0x4000080 ttyout syz-executor 8249 264992 72679 0 2 0x4000000 syz-executor 94913 60336 1 0 2 0x100083 getty 6291 364961 0 0 3 0x14200 acct acct 38033 277610 85523 0 2 0x482 syz-executor 70982 274824 57172 0 3 0x82 sbwait sshd-session 72679 129053 85523 0 2 0x482 syz-executor 32143 301211 0 0 3 0x14200 bored sosplice 92666 223050 85523 0 2 0x482 syz-executor 26757 25926 85523 0 2 0x482 syz-executor 91679 501234 85523 0 2 0x482 syz-executor 63319 171773 85523 0 2 0x482 syz-executor 9039 524131 85523 0 2 0x482 syz-executor 85523 82067 75980 0 3 0x82 wait syz-executor 75980 363551 31724 0 3 0x10008a sigsusp ksh 31724 212700 43164 0 3 0x98 kqread sshd-session 43164 79498 57172 0 3 0x92 kqread sshd-session 57172 59211 1 0 3 0x88 kqread sshd 90455 127444 93853 74 3 0x1100092 bpf pflogd 93853 294477 1 0 3 0x80 sbwait pflogd 48724 171886 24118 73 3 0x1100090 kqread syslogd 24118 331064 1 0 3 0x100082 sbwait syslogd 46107 60790 1 0 3 0x100080 kqread resolvd 80158 470285 91033 77 3 0x100092 kqread dhcpleased 63506 53044 91033 77 3 0x100092 kqread dhcpleased 91033 338184 1 0 3 0x80 kqread dhcpleased 48331 175927 0 0 2 0x14200 smr 40229 36302 0 0 2 0x14200 zerothread 32783 496914 0 0 3 0x14200 aiodoned aiodoned 40779 190599 0 0 3 0x14200 syncer update 6005 183762 0 0 3 0x14200 cleaner cleaner 42316 230557 0 0 3 0x14200 reaper reaper 9143 472689 0 0 3 0x14200 pgdaemon pagedaemon 60208 383149 0 0 3 0x14200 bored viomb 31412 132278 0 0 3 0x40014200 acpi0 acpi0 92621 319164 0 0 3 0x40014200 idle1 76413 150665 0 0 3 0x14200 bored softnet3 55648 278078 0 0 3 0x14200 bored softnet2 28925 139420 0 0 3 0x14200 bored softnet1 85532 16022 0 0 2 0x14200 softnet0 40426 61724 0 0 2 0x14200 systqmp 5422 24755 0 0 3 0x14200 bored systq 44501 149270 0 0 2 0x14200 softclockmp 18923 49533 0 0 7 0x40014200 softclock 12251 445871 0 0 3 0x40014200 idle0 1 490759 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 59667 (syz-executor) thread 0xffff8000ffff6f68 (157798) Process 70811 (syz-executor) thread 0xffff8000ffff71f0 (45669) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10262 11241K 15316K 166960K 15780 0 pcb 17 16K 18K 166960K 689 0 rtable 162 7K 9K 166960K 792 0 pf 42 19K 22K 166960K 128 0 ifaddr 37 6K 7K 166960K 101 0 ifgroup 67 2K 3K 166960K 152 0 sysctl 4 1K 1K 166960K 4 0 counters 68 36K 37K 166960K 128 0 ioctlops 0 0K 4K 166960K 1896 0 iov 0 0K 20K 166960K 277 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1425 90K 91K 166960K 3762 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 50 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 95 0 dirhash 12 2K 2K 166960K 108 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 17 61K 93K 166960K 2528 0 sigio 0 0K 0K 166960K 136 0 proc 75 103K 128K 166960K 806 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 455 0 in_multi 67 5K 7K 166960K 198 0 ether_multi 1 0K 0K 166960K 14 0 mrt 2 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 325 1447K 1447K 166960K 325 0 exec 0 0K 1K 166960K 756 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 244 74K 88K 166960K 25850 0 UVM aobj 86 7K 7K 166960K 92 0 pinsyscall 44 88K 102K 166960K 3766 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 148 0 NDP 14 0K 2K 166960K 70 0 temp 80 6900K 6973K 166960K 104463 0 kqueue 13 20K 30K 166960K 384 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 120 469 0 466 5 4 1 3 0 8 0 rtentry 112 232 0 165 4 0 4 4 0 8 0 unpcb 144 2075 0 2058 12 11 1 6 0 8 0 syncache 336 18 0 18 4 4 0 1 0 8 0 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 808 912 0 904 17 14 3 8 0 8 2 arp 120 52 0 38 1 0 1 1 0 8 0 inpcb 376 3738 0 3726 39 32 7 21 0 8 4 nd6 136 41 0 24 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 3 0 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1168 21 0 21 5 4 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 11 0 10 1 0 1 1 0 482 0 pffrnode 88 11 0 10 1 0 1 1 0 8 0 pffrent 40 24 0 23 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 1 0 1 1 1 0 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 215 0 59 1 0 1 1 0 8 0 pfstkey 128 345 0 190 6 0 6 6 0 8 0 pfstate 376 279 0 124 16 0 16 16 0 8 0 pfrule 1344 24 0 18 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 872 0 542 32 8 24 29 0 8 0 art_table 32 875 0 542 4 0 4 4 0 8 0 art_node 16 218 0 164 1 0 1 1 0 8 0 sysvmsgpl 40 37 0 20 1 0 1 1 0 8 0 semapl 112 93 0 83 1 0 1 1 0 8 0 shmpl 112 89 0 6 3 0 3 3 0 8 0 dirhash 1024 85 0 68 3 0 3 3 0 8 0 dino2pl 256 6138 0 4631 96 0 96 96 0 8 0 ffsino 280 6138 0 4631 109 0 109 109 0 8 0 nchpl 144 9714 0 9174 64 33 31 64 0 8 7 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 36028 0 36026 5 4 1 3 0 8 0 percpumem 16 78 0 30 1 0 1 1 0 8 0 kstatmem 264 88 0 60 3 0 3 3 0 8 0 scsiplug 72 12 0 12 4 3 1 1 0 8 1 scxspl 216 33311 0 33311 15 13 2 8 1 8 2 plimitpl 152 604 0 587 1 0 1 1 0 8 0 sigapl 424 2861 0 2809 9 2 7 9 0 8 0 futexpl 64 37139 0 37137 1 0 1 1 0 8 0 knotepl 120 547 0 0 17 0 17 17 0 8 0 kqueuepl 216 980 0 971 13 8 5 5 0 8 4 pipepl 328 537 0 509 11 8 3 8 0 8 0 fdescpl 504 2819 0 2787 5 0 5 5 0 8 0 filepl 152 21595 0 21373 29 13 16 18 0 8 5 lockfpl 104 1025 0 1023 2 0 2 2 0 8 1 lockfspl 48 385 0 383 1 0 1 1 0 8 0 sessionpl 144 42 0 32 1 0 1 1 0 8 0 pgrppl 48 163 0 145 1 0 1 1 0 8 0 ucredpl 104 3675 0 3662 1 0 1 1 0 8 0 zombiepl 144 3586 0 3585 2 1 1 1 0 8 0 processpl 1168 2861 0 2809 6 2 4 6 0 8 0 procpl 648 6924 0 6864 9 2 7 8 0 8 0 srpgc 96 14 0 14 3 3 0 1 0 8 0 sosppl 168 26 0 26 4 3 1 1 0 8 1 sockpl 688 6357 0 6325 48 40 8 22 0 8 4 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 36 0 0 4 0 4 4 0 8 0 mtagpl 96 182 0 0 5 0 5 5 0 8 0 mbufpl 256 1391 0 0 84 0 84 84 0 8 0 bufpl 280 9811 0 3645 441 0 441 441 0 8 0 anonpl 24 373081 0 365780 109 39 70 84 0 185 3 amapchunkpl 152 84400 0 83757 49 10 39 39 0 158 7 amappl16 200 8058 0 7934 57 38 19 30 0 8 4 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 150 0 137 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 3523 0 3491 2 0 2 2 0 8 0 amappl11 160 67 0 53 1 0 1 1 0 8 0 amappl10 152 12 0 12 3 3 0 1 0 8 0 amappl9 144 246 0 245 1 0 1 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 125 0 111 1 0 1 1 0 8 0 amappl6 120 223 0 218 1 0 1 1 0 8 0 amappl5 112 139 0 128 1 0 1 1 0 8 0 amappl4 104 397 0 376 1 0 1 1 0 8 0 amappl3 96 17586 0 17473 4 0 4 4 0 8 0 amappl2 88 838 0 767 2 0 2 2 0 8 0 amappl1 80 18801 0 18142 15 1 14 14 0 8 0 amappl 88 25190 0 25007 5 0 5 5 0 92 0 dma32768 32768 2 0 2 2 2 0 1 0 8 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 128 254 0 254 2 2 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 91 0 6 2 0 2 2 0 8 0 uaddrrnd 24 2819 0 2787 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2819 0 2787 1 0 1 1 0 8 0 vmmpekpl 168 23877 0 23820 4 1 3 4 0 8 0 vmmpepl 168 178958 0 176836 123 18 105 108 0 357 4 vmsppl 456 2818 0 2787 5 0 5 5 0 8 0 rwobjpl 64 53480 0 46323 121 2 119 120 0 8 1 pdppl 4096 5645 0 5574 122 49 73 85 0 8 2 pvpl 32 22686 0 0 183 0 183 183 0 265 0 pmappl 248 2818 0 2787 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 413 0 89 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff834fdff0) 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_lock(ffffffff835e3748) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835e3748) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff835e3748,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 sleep_finish(0,1) at sleep_finish+0x24f sys/kern/kern_synch.c:414 msleep(ffffffff83644d00,ffffffff83510110,0,ffffffff83156d77,0) at msleep+0x13b sys/kern/kern_synch.c:249 softclock_thread(ffff8000fffff6c8) at softclock_thread+0x11f sys/kern/kern_timeout.c:806 end trace frame: 0x0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff834fdff0) 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_lock(ffffffff835e3748) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835e3748) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff835e3748,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 sleep_finish(0,1) at sleep_finish+0x24f sys/kern/kern_synch.c:414 msleep(ffffffff83644d00,ffffffff83510110,0,ffffffff83156d77,0) at msleep+0x13b sys/kern/kern_synch.c:249 softclock_thread(ffff8000fffff6c8) at softclock_thread+0x11f sys/kern/kern_timeout.c:806 end trace frame: 0x0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x680 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x73e875a6c3d0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x73e875a6c3d0, count: -1