uvm_fault(0xfffffd806cf1b200, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff823088f8 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80003c3c99d0 gsbase 0xffff80002999dff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff823088f8 Starting stack trace... panic(ffffffff834ecfe1) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c3c9920) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80002a264560,fffffd8060d3e450,ffff80003c3c9b00) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimes(ffff80002a264560,ffff80003c3c9c50,ffff80003c3c9ba0) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2733 syscall(ffff80003c3c9c50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3c9c50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5b6455c0010, 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 *459202 95790 0 0 0 1 syz-executor 382086 94281 0 0 0 0 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x73b5515ae720, 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(0xfffffd806cf1b200, 0x98, 0, 1) -> e ddb{1}> show kasan No such command ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x73b5515ae720, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a229170 rbx 0 rdx 0 rcx 0xffff80003c3bc2b8 rax 0x2a r8 0xffff80002a2290a0 r9 0x1 r10 0x9b3670442af3b622 r11 0x3d07a0b597fee893 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff823fc4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a2290f0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=459202 pid=95790 tcnt=1 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c3bd778,0xffffffff83a4f590 process=0xffff80002a382b68 user=0xffff80002a224000, vmspace=0xfffffd800b1cb1e8 estcpu=20, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *95790 459202 80100 0 7 0 0 syz-executor 7018 465885 43004 0 2 0 0 syz-executor 7018 440955 43004 0 2 0 0x4000000 syz-executor 39100 270467 92272 0 2 0 0 syz-executor 39100 150203 92272 0 3 0 0x4000080 fsleep syz-executor 15931 294349 59817 0 2 0 0 syz-executor 15931 123056 59817 0 3 0 0x4000080 sbwait syz-executor 15931 373867 59817 0 3 0 0x4000080 fsleep syz-executor 94281 382086 58351 0 7 0 0 syz-executor 94281 515703 58351 0 3 0 0x4000000 sbar syz-executor 93540 225224 64427 0 2 0 0 syz-executor 93540 442637 64427 0 2 0 0x4000000 syz-executor 93540 403163 64427 0 3 0 0x4000080 fsleep syz-executor 93540 77479 64427 0 3 0 0x4000080 fsleep syz-executor 90814 497519 99462 0 2 0 0 syz-executor 90814 468586 99462 0 3 0 0x4000080 fifor syz-executor 90814 135401 99462 0 3 0 0x4000080 fsleep syz-executor 48292 397217 0 0 3 0x14000 0x280 nfsidl nfsio 90145 436904 0 0 3 0x14000 0x280 nfsidl nfsio 25122 372753 0 0 3 0x14000 0x280 nfsidl nfsio 2828 407972 0 0 3 0x14000 0x280 nfsidl nfsio 14911 443910 0 0 3 0x14000 0x280 nfsidl nfsio 15218 472571 0 0 3 0x14000 0x280 nfsidl nfsio 83998 19331 0 0 3 0x14000 0x280 nfsidl nfsio 53110 461033 0 0 3 0x14000 0x280 nfsidl nfsio 92160 506728 0 0 3 0x14000 0x280 nfsidl nfsio 30962 277374 0 0 3 0x14000 0x280 nfsidl nfsio 50738 207468 0 0 3 0x14000 0x280 nfsidl nfsio 98825 377708 0 0 3 0x14000 0x280 nfsidl nfsio 25765 35497 0 0 3 0x14000 0x280 nfsidl nfsio 79097 443928 0 0 3 0x14000 0x280 nfsidl nfsio 70047 247790 0 0 3 0x14000 0x280 nfsidl nfsio 95873 246991 0 0 3 0x14000 0x280 nfsidl nfsio 44493 378153 0 0 3 0x14000 0x280 nfsidl nfsio 7459 178838 0 0 3 0x14000 0x280 nfsidl nfsio 45590 405020 0 0 3 0x14000 0x280 nfsidl nfsio 88545 118888 0 0 3 0x14000 0x280 nfsidl nfsio 13665 236020 1 0 3 0x100003 0x80 ttyin getty 58351 262155 49346 0 3 0x2 0x80 nanoslp syz-executor 43004 234724 49346 0 3 0x2 0x80 nanoslp syz-executor 59817 381727 49346 0 3 0x2 0x80 nanoslp syz-executor 65624 354758 49346 0 3 0x2 0 biowait syz-executor 92272 424436 49346 0 2 0x2 0xc80 syz-executor 64427 9186 49346 0 3 0x2 0x80 nanoslp syz-executor 80100 229220 49346 0 3 0x2 0x80 nanoslp syz-executor 99462 166687 49346 0 3 0x2 0x80 nanoslp syz-executor 49346 351234 1 0 3 0x2 0x80 nanoslp syz-executor 41646 298097 0 0 3 0x14000 0x200 bored smr 96364 523389 0 0 2 0x14000 0x200 zerothread 97407 34949 0 0 3 0x14000 0x200 aiodoned aiodoned 47197 12845 0 0 3 0x14000 0x200 syncer update 10410 58272 0 0 3 0x14000 0x200 cleaner cleaner 38588 101347 0 0 3 0x14000 0x200 reaper reaper 72000 254918 0 0 3 0x14000 0x200 pgdaemon pagedaemon 73877 120535 0 0 3 0x14000 0x200 bored viomb 85968 466017 0 0 3 0x14000 0x40000200 acpi0 acpi0 21468 351021 0 0 3 0x14000 0x40000200 idle1 68135 324414 0 0 3 0x14000 0x200 bored softnet1 31992 281620 0 0 3 0x14000 0x200 netlock softnet0 57813 450263 0 0 2 0x14000 0x40000200 systqmp 67965 265257 0 0 3 0x14000 0x200 bored systq 33600 433482 0 0 3 0x14000 0x200 tmoslp softclockmp 11843 192561 0 0 3 0x14000 0x40000200 tmoslp softclock 1815 349225 0 0 3 0x14000 0x40000200 idle0 1 237913 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks Process 94281 (syz-executor) thread 0xffff80002a264560 (515703) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83abe180) #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 65624 (syz-executor) thread 0xffff800045fef770 (354758) exclusive rrwlock inode r = 0 (0xfffffd806e507568) #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:150 #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_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d240558) #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 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048 #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11053 12026K 12284K 166960K 12385 0 pcb 17 13K 13K 166960K 65 0 rtable 221 7K 10K 166960K 396 0 pf 36 18K 24K 166960K 96 0 ifaddr 43 7K 8K 166960K 52 0 ifgroup 55 2K 2K 166960K 70 0 sysctl 1 1K 9K 166960K 6 0 counters 70 37K 37K 166960K 146 0 ioctlops 0 0K 4K 166960K 1684 0 iov 0 0K 12K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 1 0K 0K 166960K 6 0 vnodes 1358 85K 86K 166960K 1584 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 16 61K 240K 166960K 333 0 sigio 0 0K 0K 166960K 2 0 proc 21 33K 164K 166960K 586 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 157 0 in_multi 99 6K 6K 166960K 113 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 13 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 491 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 130 82K 162K 166960K 4741 0 UVM aobj 10 2K 2K 166960K 14 0 pinsyscall 19 38K 104K 166960K 1483 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 13 0 NDP 12 0K 2K 166960K 31 0 temp 74 9127K 9178K 166960K 17719 0 kqueue 1 2K 20K 166960K 66 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 111 0 109 2 0 2 2 0 8 1 rtentry 176 115 0 17 5 0 5 5 0 8 0 unpcb 144 176 0 174 1 0 1 1 0 8 0 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpcb 736 40 0 39 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 297 0 294 4 0 4 4 0 8 3 nd6 152 25 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 33 0 33 1 0 1 1 0 8 1 ppxss 1192 35 0 35 1 0 1 1 0 8 1 pppxif 1576 35 0 35 1 0 1 1 0 8 1 pfstscr 40 5 0 3 1 0 1 1 0 8 0 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 4 0 1 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 7 0 7 1 0 1 1 0 8 1 pfsrclim 320 2 0 2 1 0 1 1 0 8 1 pfanchor 1288 6 0 1 1 0 1 1 0 8 0 pftag 88 3 0 2 1 0 1 1 0 8 0 pfstitem 24 44 0 2 1 0 1 1 0 8 0 pfstkey 128 46 0 4 2 0 2 2 0 8 0 pfstate 448 43 0 2 5 0 5 5 0 8 0 pfrule 1360 25 0 20 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 497 0 77 31 0 31 31 0 8 2 art_table 40 498 0 77 5 0 5 5 0 8 0 art_node 32 115 0 27 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 0 1 0 1 1 0 8 0 semapl 72 7 0 0 1 0 1 1 0 8 0 shmpl 112 11 0 4 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1925 0 451 93 0 93 93 0 8 0 ffsino 296 1925 0 451 115 0 115 115 0 8 0 nchpl 144 2374 0 672 64 0 64 64 0 8 0 vnodes 216 2175 0 0 121 0 121 121 0 8 0 namei 1024 7636 0 7635 3 1 2 3 0 8 1 percpumem 16 89 0 38 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 0 1 1 0 8 1 kstatmem 264 33 0 6 3 0 3 3 0 8 1 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 9719 0 9718 6 3 3 3 1 8 2 plimitpl 152 50 0 40 1 0 1 1 0 8 0 sigapl 424 659 0 604 7 0 7 7 0 8 0 knotepl 120 510 0 0 16 0 16 16 0 8 0 kqueuepl 224 80 0 78 1 0 1 1 0 8 0 pipepl 344 143 0 116 3 0 3 3 0 8 0 fdescpl 528 623 0 604 3 0 3 3 0 8 0 filepl 160 2956 0 2792 15 0 15 15 0 8 6 lockfpl 104 89 0 88 1 0 1 1 0 8 0 lockfspl 48 37 0 36 1 0 1 1 0 8 0 sessionpl 144 37 0 34 1 0 1 1 0 8 0 pgrppl 48 45 0 34 1 0 1 1 0 8 0 ucredpl 104 309 0 306 1 0 1 1 0 8 0 zombiepl 144 604 0 604 1 0 1 1 0 8 1 processpl 1232 659 0 604 5 0 5 5 0 8 0 procpl 664 970 0 905 7 0 7 7 0 8 0 sosppl 176 4 0 4 1 0 1 1 0 8 1 sockpl 752 590 0 583 11 2 9 11 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 129 0 0 17 0 17 17 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mextrefs 64 17 0 0 1 0 1 1 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 164 0 0 10 0 10 10 0 8 0 bufpl 272 4375 0 107 285 0 285 285 0 8 0 anonpl 32 6092 0 0 50 0 50 50 0 247 0 amapchunkpl 152 14380 0 14014 25 0 25 25 0 158 8 amappl16 200 2424 0 2402 19 9 10 15 0 8 8 amappl15 192 18 0 18 1 1 0 1 0 8 0 amappl14 184 432 0 432 1 0 1 1 0 8 1 amappl13 176 231 0 230 1 0 1 1 0 8 0 amappl12 168 871 0 854 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 79 0 78 1 0 1 1 0 8 0 amappl9 144 276 0 276 1 1 0 1 0 8 0 amappl8 136 99 0 99 1 0 1 1 0 8 1 amappl7 128 175 0 172 1 0 1 1 0 8 0 amappl6 120 169 0 169 1 0 1 1 0 8 1 amappl5 112 95 0 95 1 0 1 1 0 8 1 amappl4 104 305 0 301 1 0 1 1 0 8 0 amappl3 96 2492 0 2426 3 0 3 3 0 8 1 amappl2 88 745 0 721 2 0 2 2 0 8 0 amappl1 80 11256 0 11136 14 1 13 14 0 8 7 amappl 88 3921 0 3805 4 0 4 4 0 92 0 uvmvnodes 80 105 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 7 0 7 2 1 1 1 0 8 1 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 13 0 4 1 0 1 1 0 8 0 uaddrrnd 24 623 0 604 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 623 0 604 1 0 1 1 0 8 0 vmmpekpl 168 7016 0 6977 2 0 2 2 0 8 0 vmmpepl 168 49027 0 48176 84 1 83 84 0 357 35 vmsppl 488 622 0 604 5 0 5 5 0 8 1 rwobjpl 80