uvm_fault(0xfffff0007e4fe3e8, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81f17b48 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff800035b9d0c0 gsbase 0xffff80002999dff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81f17b48 Starting stack trace... panic(ffffffff834e789d) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff800035b9d010) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff8000367ba020,fffff0006d9a8d00,ffff800035b9d1f0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690 sys_futimes(ffff8000367ba020,ffff800035b9d340,ffff800035b9d290) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2732 syscall(ffff800035b9d340) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035b9d340) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xef7bb49a600, count: 250 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT c 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *351813 44247 0 0x2 0 0 syz-executor 170846 31123 0 0x14000 0x200 1 reaper proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7a74e9926a00, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu1: uvm_fault(0xfffff0007e4fe3e8, 0x98, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7a74e9926a00, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a24e320 rbx 0 rdx 0 rcx 0xffff8000ffffd760 rax 0x2a r8 0xffff80002a24e250 r9 0 r10 0x8d46cca9b654c165 r11 0xd2730dd4e3a8405 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff82eb74c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a24e2a0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=351813 pid=44247 tcnt=1 stat=onproc flags process=2 proc=0 runpri=50, usrpri=50, slppri=24, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffc008,0xffff80002a2222b8 process=0xffff8000ffff3500 user=0xffff80002a249000, vmspace=0xfffff0006e83fb80 estcpu=0, cpticks=13, pctcpu=0.10, user=2, sys=11, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 96836 160066 32886 0 2 0 syz-executor 85825 476139 99341 0 2 0 syz-executor 85825 383305 99341 0 3 0x4000000 sbar syz-executor 85825 156619 99341 0 3 0x4000080 fsleep syz-executor 40599 55769 45436 0 2 0 syz-executor 40599 192520 45436 0 3 0x4000080 kqread syz-executor 40599 246598 45436 0 3 0x4000080 fsleep syz-executor 45436 496950 44247 0 3 0x82 nanoslp syz-executor 65237 58280 44247 0 3 0x2 biowait syz-executor 61037 342023 44247 0 3 0x82 nanoslp syz-executor 32886 382081 44247 0 3 0x82 nanoslp syz-executor 55732 277596 44247 0 3 0x82 nanoslp syz-executor 99341 121186 44247 0 3 0x82 nanoslp syz-executor 56609 476376 44247 0 2 0x2 syz-executor 33239 127068 44247 0 2 0x2 syz-executor *44247 351813 68261 0 7 0x2 syz-executor 68261 511194 24031 0 3 0x10008a sigsusp ksh 24031 345198 34669 0 3 0x98 kqread sshd-session 34669 235249 24419 0 3 0x92 kqread sshd-session 74514 500435 1 0 3 0x100083 ttyin getty 24419 278520 1 0 3 0x88 kqread sshd 36132 67244 86735 74 3 0x1100092 bpf pflogd 86735 175974 1 0 3 0x80 sbwait pflogd 71671 174930 30321 73 3 0x1100090 kqread syslogd 30321 320941 1 0 3 0x100082 sbwait syslogd 95538 213819 1 0 3 0x100080 kqread resolvd 5579 453716 77603 77 3 0x100092 kqread dhcpleased 62877 492966 77603 77 3 0x100092 kqread dhcpleased 77603 413306 1 0 3 0x80 kqread dhcpleased 30040 518689 0 0 3 0x14200 bored smr 21312 215870 0 0 2 0x14200 zerothread 63736 11168 0 0 3 0x14200 aiodoned aiodoned 51891 97933 0 0 3 0x14200 syncer update 56316 340525 0 0 3 0x14200 cleaner cleaner 31123 170846 0 0 7 0x14200 reaper 10797 515996 0 0 3 0x14200 pgdaemon pagedaemon 84383 397052 0 0 3 0x14200 bored viomb 15352 300988 0 0 3 0x40014200 acpi0 acpi0 89641 442393 0 0 3 0x40014200 idle1 14008 483831 0 0 3 0x14200 bored softnet1 46613 458870 0 0 3 0x14200 bored softnet0 46091 192263 0 0 2 0x40014200 systqmp 24983 282324 0 0 3 0x14200 bored systq 70728 69516 0 0 3 0x14200 tmoslp softclockmp 42043 42930 0 0 3 0x40014200 tmoslp softclock 50591 387628 0 0 3 0x40014200 idle0 1 267726 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &sched_lock r = 0 (0xffffffff83a4c3c0) #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+0x4b4 sys/kern/kern_lock.c:487 #2 wakeup_n+0x54 sys/kern/kern_synch.c:581 #3 uvm_pmr_freepages+0x3eb atomic_load_sint sys/uvm/uvmexp.h:-1 [inline] #3 uvm_pmr_freepages+0x3eb sys/uvm/uvm_pmemrange.c:1343 #4 pmap_do_remove+0x8af sys/arch/amd64/amd64/pmap.c:1949 #5 uvm_unmap_kill_entry_withlock+0x269 sys/uvm/uvm_map.c:1869 #6 uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] #6 uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 #7 exit1+0x6fc sys/kern/kern_exit.c:260 #8 sys_exit+0x1a sys/kern/kern_exit.c:-1 #9 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #10 Xsyscall+0x128 exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff83a457e8) #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+0x4b4 sys/kern/kern_lock.c:487 #2 uvm_pmr_freepages+0x1a8 sys/uvm/uvm_pmemrange.c:-1 #3 pmap_do_remove+0x8af sys/arch/amd64/amd64/pmap.c:1949 #4 uvm_unmap_kill_entry_withlock+0x269 sys/uvm/uvm_map.c:1869 #5 uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] #5 uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 #6 exit1+0x6fc sys/kern/kern_exit.c:260 #7 sys_exit+0x1a sys/kern/kern_exit.c:-1 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 85825 (syz-executor) thread 0xffff8000367ba020 (383305) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a845c0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 Process 65237 (syz-executor) thread 0xffff8000fffef240 (58280) exclusive rrwlock inode r = 0 (0xfffff0006a4a97b8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580 #11 namei+0x7c5 sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1806 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffff0006cf6ad70) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1806 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11056 12093K 12352K 166960K 12241 0 pcb 17 14K 15K 166960K 48 0 rtable 248 7K 8K 166960K 386 0 pf 35 17K 21K 166960K 54 0 ifaddr 43 7K 7K 166960K 48 0 ifgroup 55 2K 2K 166960K 62 0 sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 76 0 ioctlops 0 0K 4K 166960K 1525 0 iov 0 0K 1K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1296 81K 82K 166960K 1419 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 93K 166960K 224 0 sigio 0 0K 0K 166960K 3 0 proc 72 115K 164K 166960K 561 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 13 0 in_multi 99 7K 7K 166960K 102 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 471 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 206 158K 176K 166960K 4047 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 39 78K 103K 166960K 1430 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 6 0 NDP 12 0K 2K 166960K 30 0 temp 39 9111K 9116K 166960K 5752 0 kqueue 14 22K 24K 166960K 40 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 41 0 38 1 0 1 1 0 8 0 rtentry 176 115 0 4 6 0 6 6 0 8 0 unpcb 144 81 0 62 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 38 0 33 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 209 0 201 7 0 7 7 0 8 5 nd6 152 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 2 0 2 1 0 1 1 0 8 1 pppxif 1576 1 0 1 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 0 1 1 0 8 1 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 29 0 0 1 0 1 1 0 8 0 pfstkey 128 31 0 2 1 0 1 1 0 8 0 pfstate 448 30 0 1 4 0 4 4 0 8 0 pfrule 1360 22 0 17 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 489 0 36 31 0 31 31 0 8 2 art_table 40 491 0 36 5 0 5 5 0 8 0 art_node 32 115 0 14 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 72 3 0 0 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1712 0 243 93 0 93 93 0 8 0 ffsino 296 1712 0 243 114 0 114 114 0 8 0 nchpl 144 2027 0 324 64 0 64 64 0 8 0 vnodes 216 1838 0 0 103 0 103 103 0 8 0 namei 1024 6549 0 6549 2 0 2 2 0 8 2 percpumem 16 53 0 3 1 0 1 1 0 8 0 kstatmem 264 31 0 4 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 7304 0 7303 11 3 8 8 1 8 7 plimitpl 152 74 0 57 1 0 1 1 0 8 0 sigapl 424 555 0 510 7 0 7 7 0 8 1 knotepl 120 306 0 0 10 0 10 10 0 8 0 kqueuepl 224 46 0 36 1 0 1 1 0 8 0 pipepl 344 135 0 108 3 0 3 3 0 8 0 fdescpl 528 539 0 511 3 0 3 3 0 8 0 filepl 160 2267 0 2051 13 0 13 13 0 8 2 lockfpl 104 78 0 76 1 0 1 1 0 8 0 lockfspl 48 31 0 29 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 37 0 20 1 0 1 1 0 8 0 ucredpl 104 204 0 191 1 0 1 1 0 8 0 zombiepl 144 512 0 510 1 0 1 1 0 8 0 processpl 1232 555 0 510 5 0 5 5 0 8 0 procpl 664 713 0 664 6 0 6 6 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 752 332 0 302 11 0 11 11 0 8 6 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 15 0 15 15 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 142 0 0 9 0 9 9 0 8 0 bufpl 272 2481 0 105 159 0 159 159 0 8 0 anonpl 32 3799 0 0 31 0 31 31 0 246 0 amapchunkpl 152 11047 0 10666 22 0 22 22 0 158 2 amappl16 200 1549 0 1528 5 3 2 5 0 8 0 amappl15 192 43 0 43 1 1 0 1 0 8 0 amappl14 184 443 0 442 1 0 1 1 0 8 0 amappl13 176 127 0 115 1 0 1 1 0 8 0 amappl12 168 796 0 769 2 0 2 2 0 8 0 amappl11 160 29 0 29 1 1 0 1 0 8 0 amappl10 152 67 0 53 1 0 1 1 0 8 0 amappl9 144 276 0 275 1 0 1 1 0 8 0 amappl8 136 106 0 104 1 0 1 1 0 8 0 amappl7 128 154 0 140 1 0 1 1 0 8 0 amappl6 120 154 0 153 1 0 1 1 0 8 0 amappl5 112 103 0 91 1 0 1 1 0 8 0 amappl4 104 382 0 363 1 0 1 1 0 8 0 amappl3 96 2106 0 2017 4 0 4 4 0 8 0 amappl2 88 582 0 521 2 0 2 2 0 8 0 amappl1 80 11483 0 10889 17 0 17 17 0 8 3 amappl 88 3271 0 3137 5 0 5 5 0 92 1 uvmvnodes 80 103 0 0 3 0 3 3 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 128 253 0 253 1 1 0 1 0 8 0 dma64 64 7 0 7 2 1 1 1 0 8 1 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 539 0 511 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 539 0 511 1 0 1 1 0 8 0 vmmpekpl 168 6676 0 6638 2 0 2 2 0 8 0 vmmpepl 168 44354 0 42622 97 0 97 97 0 357 6 vmsppl 488 538 0 511 5 0 5 5 0 8 1 rwobjpl 80 16008 0 15010 26 0 26 26 0 8 3 pdppl 4096 1085 0 1022 105 34 71 85 0 8 8 pvpl 32 13004 0 0 107 2 105 105 0 265 0 pmappl 256 538 0 511 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 438 0 37 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7a74e9926a00, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff80002999dff0) 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(ffffffff83a83dc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a83dc0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 reaper(ffff8000ffffd9f8) at reaper+0x211 sys/kern/kern_exit.c:505 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff80002999dff0) 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(ffffffff83a83dc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a83dc0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 reaper(ffff8000ffffd9f8) at reaper+0x211 sys/kern/kern_exit.c:505 end trace frame: 0x0, count: -5