uvm_fault(0xfffffd806dbf13e0, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82d4b828 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff8000357d1d70 gsbase 0xffff8000299bdff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82d4b828 Starting stack trace... panic(ffffffff8347ac65) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff8000357d1cc0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff8000fffee548,fffffd806e7885f8,ffff8000357d1ea0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771 sys_futimes(ffff8000fffee548,ffff8000357d1ff0,ffff8000357d1f40) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2813 syscall(ffff8000357d1ff0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000357d1ff0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x60dc6285bf0, count: 250 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 270380 67512 0 0 0 0 syz-executor *411413 40777 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x75456338aa10, 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(0xfffffd806dbf13e0, 0x98, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x75456338aa10, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000303b4b30 rbx 0 rdx 0 rcx 0xffff8000317b9780 rax 0x2a r8 0xffff8000303b4a60 r9 0x1 r10 0x9c9488600952c14c r11 0x92d3dea4f89a72d1 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff8301d4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff8000303b4ab0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=411413 pid=40777 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000317b82c0,0xffff8000317b8a98 process=0xffff8000ffff1cf0 user=0xffff8000303af000, vmspace=0xfffffd80693069a8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 38459 240301 86520 0 2 0x40 syz-executor 67512 270380 4549 0 7 0 syz-executor 67512 207043 4549 0 3 0x4000000 biowait syz-executor 47008 71235 59284 0 2 0 syz-executor 47008 302292 59284 0 3 0x4000000 sbar syz-executor 59002 329389 64105 0 2 0 syz-executor 59002 369201 64105 0 3 0x4000080 fsleep syz-executor 59002 156890 64105 0 3 0x4000080 fsleep syz-executor *40777 411413 9194 0 7 0 syz-executor 40777 53887 9194 0 3 0x4000080 fsleep syz-executor 86520 479033 95196 0 3 0x82 ppwait syz-executor 79289 450873 5691 0 3 0x90 nanoslp syz-executor 79289 461912 5691 0 3 0x4000090 kqread syz-executor 79289 68837 5691 0 3 0x4000090 fsleep syz-executor 79289 236686 5691 0 3 0x4000090 fsleep syz-executor 28871 64499 0 0 3 0x14200 acct acct 64105 398595 95196 0 3 0x82 nanoslp syz-executor 80798 204460 63436 0 3 0x100082 sbwait ndp 63436 198752 78678 0 3 0x10008a sigsusp sh 5691 237028 95196 0 3 0x82 nanoslp syz-executor 9194 231586 95196 0 3 0x82 nanoslp syz-executor 59284 304643 95196 0 3 0x82 nanoslp syz-executor 78678 270087 95196 0 3 0x82 wait syz-executor 4549 182717 95196 0 3 0x82 nanoslp syz-executor 87450 275865 95196 0 3 0x82 nanoslp syz-executor 95196 273242 81604 0 3 0x82 kqread syz-executor 81604 178458 41320 0 3 0x10008a sigsusp ksh 41320 282710 70170 0 3 0x98 kqread sshd-session 70170 496115 82188 0 3 0x92 kqread sshd-session 28790 217227 1 0 3 0x100083 ttyopn getty 82188 21442 1 0 3 0x88 kqread sshd 18070 2568 14126 74 3 0x1100092 bpf pflogd 14126 409677 1 0 3 0x80 sbwait pflogd 70999 255645 26844 73 3 0x1100090 kqread syslogd 26844 216326 1 0 3 0x100082 sbwait syslogd 12474 518504 1 0 3 0x100080 kqread resolvd 12305 228651 6587 77 3 0x100092 kqread dhcpleased 75121 307534 6587 77 3 0x100092 kqread dhcpleased 6587 44209 1 0 3 0x80 kqread dhcpleased 33087 451757 0 0 3 0x14200 pause smr 42966 20817 0 0 2 0x14200 zerothread 91372 377793 0 0 3 0x14200 aiodoned aiodoned 80608 176008 0 0 3 0x14200 syncer update 24041 495679 0 0 3 0x14200 cleaner cleaner 53863 411339 0 0 3 0x14200 reaper reaper 72487 498508 0 0 3 0x14200 pgdaemon pagedaemon 99218 522490 0 0 3 0x14200 bored viomb 82019 438285 0 0 3 0x40014200 acpi0 acpi0 45012 70155 0 0 3 0x40014200 idle1 8029 235460 0 0 3 0x14200 bored softnet1 99055 139748 0 0 3 0x14200 netlock softnet0 35879 231123 0 0 3 0x14200 smrbar systqmp 71373 284158 0 0 3 0x14200 bored systq 29654 57908 0 0 3 0x14200 tmoslp softclockmp 65175 475062 0 0 3 0x40014200 tmoslp softclock 15244 38490 0 0 3 0x40014200 idle0 1 167844 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 67512 (syz-executor) thread 0xffff8000fffee018 (207043) exclusive rrwlock inode r = 0 (0xfffffd806e816b80) #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 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1732 #8 ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 #9 VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 #10 domknodat+0x469 sys/kern/vfs_syscalls.c:1659 #11 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8061fad690) #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+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domknodat+0xb4 sys/kern/vfs_syscalls.c:1611 #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 47008 (syz-executor) thread 0xffff8000fffee548 (302292) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839dd2c0) #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 35879 (systqmp) thread 0xffff8000ffffe000 (231123) shared rwlock systqmp r = 0 (0xffffffff8389da88) #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 11111 12179K 13985K 166960K 13171 0 pcb 18 17K 18K 166960K 205 0 rtable 197 7K 8K 166960K 456 0 pf 37 18K 25K 166960K 129 0 ifaddr 36 5K 7K 166960K 67 0 ifgroup 59 2K 2K 166960K 103 0 sysctl 4 1K 9K 166960K 17 0 counters 72 37K 37K 166960K 106 0 ioctlops 0 0K 4K 166960K 1707 0 iov 0 0K 16K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1455 91K 92K 166960K 2041 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 134 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 89K 166960K 609 0 sigio 0 0K 0K 166960K 11 0 proc 73 115K 164K 166960K 650 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 96 0 in_multi 72 5K 7K 166960K 126 0 ether_multi 2 0K 0K 166960K 6 0 mrt 3 0K 0K 166960K 24 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 459 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 243 170K 188K 166960K 7309 0 UVM aobj 6 4K 4K 166960K 6 0 pinsyscall 45 90K 107K 166960K 1840 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 14 0 NDP 13 0K 2K 166960K 44 0 temp 54 9077K 9142K 166960K 24158 0 kqueue 17 26K 29K 166960K 115 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 61 0 57 1 0 1 1 0 8 0 rtentry 176 135 0 53 5 0 5 5 0 8 0 unpcb 144 400 0 381 6 0 6 6 0 8 5 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 315 0 310 13 4 9 13 0 8 8 arp 136 22 0 10 1 0 1 1 0 8 0 inpcb 328 950 0 941 14 5 9 13 0 8 8 nd6 152 28 0 11 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 3 0 3 1 0 1 1 0 8 1 ppxss 1192 10 0 10 1 0 1 1 0 8 1 pppxif 1576 4 0 4 1 0 1 1 0 8 1 pffrag 232 10 0 3 1 0 1 1 0 482 0 pffrnode 88 9 0 3 1 0 1 1 0 8 0 pffrent 40 16 0 8 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 2 0 1 1 0 1 1 0 8 0 pfanchor 1288 7 0 5 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 55 0 0 1 0 1 1 0 8 0 pfstkey 128 55 0 0 2 0 2 2 0 8 0 pfstate 448 54 0 0 6 0 6 6 0 8 0 pfrule 1360 32 0 26 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 528 0 179 29 3 26 29 0 8 2 art_table 40 530 0 179 5 0 5 5 0 8 0 art_node 32 135 0 59 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 3 1 0 1 1 0 8 0 semapl 112 129 0 119 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2504 0 1037 93 0 93 93 0 8 0 ffsino 296 2504 0 1037 114 0 114 114 0 8 0 nchpl 144 3358 0 1654 64 0 64 64 0 8 0 vnodes 216 2601 0 0 145 0 145 145 0 8 0 namei 1024 11957 0 11956 2 1 1 2 0 8 0 percpumem 16 68 0 17 1 0 1 1 0 8 0 kstatmem 264 56 0 26 3 0 3 3 0 8 1 scxspl 216 10903 0 10902 10 3 7 7 1 8 6 plimitpl 152 96 0 77 1 0 1 1 0 8 0 sigapl 424 935 0 885 7 1 6 7 0 8 0 knotepl 120 407 0 0 13 0 13 13 0 8 0 kqueuepl 224 288 0 275 5 0 5 5 0 8 4 pipepl 344 166 0 139 3 0 3 3 0 8 0 fdescpl 528 917 0 884 3 0 3 3 0 8 0 filepl 160 6101 0 5872 23 4 19 23 0 8 8 lockfpl 104 195 0 192 1 0 1 1 0 8 0 lockfspl 48 84 0 81 1 0 1 1 0 8 0 sessionpl 144 37 0 28 1 0 1 1 0 8 0 pgrppl 48 50 0 33 1 0 1 1 0 8 0 ucredpl 104 1152 0 1137 1 0 1 1 0 8 0 zombiepl 144 886 0 885 1 0 1 1 0 8 0 processpl 1232 935 0 885 5 0 5 5 0 8 0 procpl 664 1704 0 1646 6 0 6 6 0 8 0 sosppl 176 4 0 4 1 0 1 1 0 8 1 sockpl 752 1427 0 1395 30 19 11 27 0 8 7 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 112 0 0 14 0 14 14 0 8 0 mcl2k 2048 35 0 0 4 0 4 4 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 221 0 0 14 0 14 14 0 8 0 bufpl 280 3358 0 109 233 0 233 233 0 8 0 anonpl 32 7667 0 0 62 0 62 62 0 246 0 amapchunkpl 152 23673 0 23188 32 0 32 32 0 158 13 amappl16 200 3159 0 3131 19 6 13 15 0 8 8 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 458 0 456 1 0 1 1 0 8 0 amappl13 176 128 0 115 1 0 1 1 0 8 0 amappl12 168 1178 0 1147 2 0 2 2 0 8 0 amappl11 160 18 0 18 2 2 0 1 0 8 0 amappl10 152 63 0 49 1 0 1 1 0 8 0 amappl9 144 263 0 262 1 0 1 1 0 8 0 amappl8 136 111 0 109 1 0 1 1 0 8 0 amappl7 128 156 0 142 1 0 1 1 0 8 0 amappl6 120 178 0 174 1 0 1 1 0 8 0 amappl5 112 105 0 95 1 0 1 1 0 8 0 amappl4 104 315 0 292 1 0 1 1 0 8 0 amappl3 96 4583 0 4468 4 0 4 4 0 8 0 amappl2 88 588 0 524 2 0 2 2 0 8 0 amappl1 80 12352 0 11728 18 1 17 17 0 8 2 amappl 88 6455 0 6292 5 0 5 5 0 92 0 uvmvnodes 80 114 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 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 72 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 917 0 884 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 917 0 884 1 0 1 1 0 8 0 vmmpekpl 168 9249 0 9212 3 0 3 3 0 8 0 vmmpepl 168 66641 0 64654 99 0 99 99 0 357 9 vmsppl 488 916 0 884 5 0 5 5 0 8 0 rwobjpl 80 21006 0 19911 28 0 28 28 0 8 0 pdppl 4096 1841 0 1768 103 26 77 83 0 8 4 pvpl 32 16346 0 0 132 0 132 132 0 265 0 pmappl 256 916 0 884 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 297 0 38 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838d7ff0) 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(ffffffff839dcac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839dcac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff839dcac0) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:143 [inline] __mp_lock(ffffffff839dcac0) at __mp_lock+0x190 sys/kern/kern_lock.c:173 intr_handler(ffff80003c3fced0,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7159e12713c0, count: 5 ddb{0}> trace x86_ipi_db(ffffffff838d7ff0) 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(ffffffff839dcac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839dcac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff839dcac0) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:143 [inline] __mp_lock(ffffffff839dcac0) at __mp_lock+0x190 sys/kern/kern_lock.c:173 intr_handler(ffff80003c3fced0,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7159e12713c0, count: -10 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: 0x75456338aa10, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x75456338aa10, count: -1