¹j¼õ¬|ÿ ž¨E1\…:uvm_fault(0xfffffd806c54d208, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff8250fed8 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff8000363bc920 gsbase 0xffff8000299bdff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff8250fed8 Starting stack trace... panic(ffffffff83483ffa) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff8000363bc870) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80002a241770,fffffd800dd61958,ffff8000363bca50) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771 sys_futimes(ffff80002a241770,ffff8000363bcba0,ffff8000363bcaf0) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2813 syscall(ffff8000363bcba0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000363bcba0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x66244154ee0, 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 *521417 41512 0 0 0 1 syz-executor 394564 72678 0 0 0 0 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7493302f3870, 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(0xfffffd806c54d208, 0x98, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7493302f3870, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c3dadd0 rbx 0 rdx 0 rcx 0xffff80002a240d10 rax 0x2a r8 0xffff80003c3dad00 r9 0x1 r10 0xbab5c520b4efa7c7 r11 0x8c5256fb8e9308e9 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff811f54c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c3dad50 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=521417 pid=41512 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=0xffff80002a241770,0xffffffff83973128 process=0xffff8000fffe6b70 user=0xffff80003c3d5000, vmspace=0xfffffd806c54d5d8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *41512 521417 70137 0 7 0 syz-executor 59230 159247 21683 0 2 0 syz-executor 72678 394564 80269 0 7 0 syz-executor 72678 284597 80269 0 3 0x4000000 sbar syz-executor 87011 258726 75358 0 2 0 syz-executor 87011 493654 75358 0 3 0x4000080 fsleep syz-executor 73888 110844 88118 0 3 0x80 nanoslp syz-executor 73888 311635 88118 0 3 0x4000080 ttyin syz-executor 73888 272643 88118 0 3 0x4000080 fsleep syz-executor 31727 301823 38906 0 2 0 syz-executor 31727 113595 38906 0 3 0x4000080 fsleep syz-executor 31727 165042 38906 0 3 0x4000080 fsleep syz-executor 44692 18801 84229 0 3 0x80 nanoslp syz-executor 44692 486098 84229 0 3 0x4000080 ttyin syz-executor 44692 279828 84229 0 3 0x4000080 fsleep syz-executor 44692 435570 84229 0 3 0x4000080 fsleep syz-executor 44692 413164 84229 0 3 0x4000080 fsleep syz-executor 17186 305255 24604 60929 3 0x90 nanoslp syz-executor 17186 91528 24604 60929 3 0x4000090 kqread syz-executor 17186 288088 24604 60929 3 0x4000090 fsleep syz-executor 75358 509778 43778 0 3 0x82 nanoslp syz-executor 88118 180734 43778 0 3 0x82 nanoslp syz-executor 24604 105677 43778 0 3 0x82 nanoslp syz-executor 70137 45934 43778 0 3 0x82 nanoslp syz-executor 21683 140710 43778 0 3 0x82 nanoslp syz-executor 80269 92249 43778 0 3 0x82 nanoslp syz-executor 84229 467304 43778 0 3 0x82 nanoslp syz-executor 38906 420908 43778 0 3 0x82 nanoslp syz-executor 43778 73824 20845 0 3 0x82 kqread syz-executor 20845 167142 57652 0 3 0x10008a sigsusp ksh 57652 154973 88762 0 3 0x98 kqread sshd-session 88762 332061 49614 0 3 0x92 kqread sshd-session 97582 358982 1 0 3 0x100083 ttyopn getty 49614 8402 1 0 3 0x88 kqread sshd 38852 487132 64561 74 3 0x1100092 bpf pflogd 64561 182778 1 0 3 0x80 sbwait pflogd 76133 389082 83080 73 3 0x1100090 kqread syslogd 83080 124202 1 0 3 0x100082 sbwait syslogd 93317 482919 1 0 3 0x100080 kqread resolvd 16006 111895 22493 77 3 0x100092 kqread dhcpleased 66582 168344 22493 77 3 0x100092 kqread dhcpleased 22493 464706 1 0 3 0x80 kqread dhcpleased 63268 412816 0 0 3 0x14200 pause smr 52414 189008 0 0 2 0x14200 zerothread 29266 336013 0 0 3 0x14200 aiodoned aiodoned 44748 109759 0 0 3 0x14200 syncer update 48671 77607 0 0 3 0x14200 cleaner cleaner 86559 419728 0 0 3 0x14200 reaper reaper 88870 344228 0 0 3 0x14200 pgdaemon pagedaemon 62990 15549 0 0 3 0x14200 bored viomb 25639 427316 0 0 3 0x40014200 acpi0 acpi0 49108 382241 0 0 3 0x40014200 idle1 63975 370617 0 0 3 0x14200 bored softnet1 75158 120558 0 0 3 0x14200 netlock softnet0 52693 91166 0 0 3 0x14200 smrbar systqmp 41281 131168 0 0 3 0x14200 bored systq 11765 424217 0 0 3 0x14200 tmoslp softclockmp 39804 227369 0 0 3 0x40014200 tmoslp softclock 35233 37275 0 0 3 0x40014200 idle0 1 168529 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 72678 (syz-executor) thread 0xffff80002a241770 (284597) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8396a9c0) #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 73888 (syz-executor) thread 0xffff8000fffe8028 (311635) exclusive rrwlock inode r = 0 (0xfffffd806c672688) #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 spec_open+0x2f2 sys/kern/spec_vnops.c:151 #6 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 #7 vn_open+0x7a5 sys/kern/vfs_vnops.c:183 #8 vndioctl+0xc43 sys/dev/vnd.c:458 #9 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #10 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537 #11 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #12 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #13 Xsyscall+0x128 Process 44692 (syz-executor) thread 0xffff80002a240018 (486098) exclusive rrwlock inode r = 0 (0xfffffd806e7b9798) #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 spec_open+0x2f2 sys/kern/spec_vnops.c:151 #6 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 #7 vn_open+0x7a5 sys/kern/vfs_vnops.c:183 #8 vndioctl+0xc43 sys/dev/vnd.c:458 #9 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #10 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537 #11 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #12 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #13 Xsyscall+0x128 Process 52693 (systqmp) thread 0xffff8000ffffe530 (91166) shared rwlock systqmp r = 0 (0xffffffff8391e3b8) #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 11118 12473K 12481K 166960K 12629 0 pcb 20 13K 13K 166960K 94 0 rtable 190 7K 8K 166960K 489 0 pf 28 16K 20K 166960K 71 0 ifaddr 31 5K 7K 166960K 66 0 ifgroup 43 2K 2K 166960K 91 0 sysctl 4 1K 9K 166960K 9 0 counters 64 36K 37K 166960K 98 0 ioctlops 0 0K 4K 166960K 1709 0 iov 0 0K 16K 166960K 87 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1476 93K 93K 166960K 1985 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 19 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 106K 166960K 559 0 sigio 0 0K 0K 166960K 5 0 proc 72 115K 164K 166960K 667 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 1 0K 0K 166960K 39 0 in_multi 66 4K 7K 166960K 138 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 14 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 289 1288K 1288K 166960K 289 0 exec 0 0K 1K 166960K 542 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 242 171K 184K 166960K 6924 0 UVM aobj 8 2K 2K 166960K 10 0 pinsyscall 43 86K 105K 166960K 1837 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 20 0 NDP 13 0K 2K 166960K 45 0 temp 48 9080K 9330K 166960K 24877 0 kqueue 15 24K 28K 166960K 96 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 120 134 0 131 3 0 3 3 0 8 2 rtentry 176 148 0 68 6 0 6 6 0 8 0 unpcb 144 195 0 176 2 0 2 2 0 8 1 syncache 336 8 0 8 1 0 1 1 0 8 1 tcpcb 736 201 0 196 7 0 7 7 0 8 6 arp 136 25 0 12 1 0 1 1 0 8 0 inpcb 328 483 0 469 7 0 7 7 0 8 5 nd6 152 35 0 19 2 0 2 2 0 8 1 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1192 7 0 7 1 0 1 1 0 8 1 pffrag 232 8 0 3 1 0 1 1 0 482 0 pffrnode 88 5 0 1 1 0 1 1 0 8 0 pffrent 40 12 0 7 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 pfstitem 24 37 0 1 1 0 1 1 0 8 0 pfstkey 128 37 0 1 2 0 2 2 0 8 0 pfstate 448 37 0 1 4 0 4 4 0 8 0 pfrule 1360 22 0 16 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 594 0 225 29 0 29 29 0 8 3 art_table 40 596 0 225 5 0 5 5 0 8 0 art_node 32 148 0 76 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 1 0 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 7 0 2 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2362 0 897 93 0 93 93 0 8 1 ffsino 296 2362 0 897 114 0 114 114 0 8 0 nchpl 144 3101 0 1385 64 0 64 64 0 8 0 rtmask 32 4 0 4 1 0 1 1 0 8 1 vnodes 216 2848 0 0 159 0 159 159 0 8 0 namei 1024 10812 0 10812 2 1 1 2 0 8 1 percpumem 16 64 0 17 1 0 1 1 0 8 0 kstatmem 264 46 0 26 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 10433 0 10433 11 3 8 8 1 8 8 plimitpl 152 141 0 123 1 0 1 1 0 8 0 sigapl 424 876 0 828 7 1 6 7 0 8 0 knotepl 120 522 0 0 16 0 16 16 0 8 0 kqueuepl 224 170 0 159 3 0 3 3 0 8 2 pipepl 344 202 0 175 6 0 6 6 0 8 3 fdescpl 528 860 0 828 3 0 3 3 0 8 0 filepl 160 5063 0 4835 17 2 15 17 0 8 5 lockfpl 104 346 0 341 2 1 1 2 0 8 0 lockfspl 48 167 0 163 1 0 1 1 0 8 0 sessionpl 144 35 0 26 1 0 1 1 0 8 0 pgrppl 48 51 0 34 1 0 1 1 0 8 0 ucredpl 104 984 0 968 1 0 1 1 0 8 0 zombiepl 144 828 0 828 1 0 1 1 0 8 1 processpl 1232 876 0 828 5 0 5 5 0 8 1 procpl 664 1516 0 1456 6 0 6 6 0 8 0 sosppl 176 3 0 3 1 0 1 1 0 8 1 sockpl 752 823 0 787 11 0 11 11 0 8 6 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 128 0 0 16 0 16 16 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 187 0 0 12 0 12 12 0 8 0 bufpl 280 3451 0 105 239 0 239 239 0 8 0 anonpl 32 5730 0 0 47 0 47 47 0 246 0 amapchunkpl 152 21800 0 21301 27 0 27 27 0 158 6 amappl16 200 2212 0 2185 5 1 4 5 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 477 0 476 1 0 1 1 0 8 0 amappl13 176 153 0 141 1 0 1 1 0 8 0 amappl12 168 1140 0 1109 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 69 0 54 1 0 1 1 0 8 0 amappl9 144 262 0 262 1 1 0 1 0 8 0 amappl8 136 120 0 118 1 0 1 1 0 8 0 amappl7 128 199 0 186 1 0 1 1 0 8 0 amappl6 120 212 0 211 1 0 1 1 0 8 0 amappl5 112 121 0 110 1 0 1 1 0 8 0 amappl4 104 324 0 304 1 0 1 1 0 8 0 amappl3 96 4165 0 4049 4 0 4 4 0 8 0 amappl2 88 610 0 549 2 0 2 2 0 8 0 amappl1 80 12831 0 12227 16 0 16 16 0 8 2 amappl 88 6021 0 5852 5 0 5 5 0 92 0 uvmvnodes 80 111 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 128 254 0 254 2 1 1 1 0 8 1 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 9 0 2 1 0 1 1 0 8 0 uaddrrnd 24 860 0 828 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 860 0 828 1 0 1 1 0 8 0 vmmpekpl 168 9111 0 9065 3 0 3 3 0 8 0 vmmpepl 168 63483 0 61522 99 0 99 99 0 357 12 vmsppl 488 859 0 828 5 0 5 5 0 8 0 rwobjpl 80 20147 0 19089 26 0 26 26 0 8 1 pdppl 4096 1727 0 1656 113 38 75 87 0 8 4 pvpl 32 13361 0 0 109 1 108 108 0 265 0 pmappl 256 859 0 828 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 296 0 41 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83916ff0) 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(ffffffff8396a1c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8396a1c0) 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(ffffffff8396a1c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8396a1c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x737eeb4c6fe0, count: 4 ddb{0}> trace x86_ipi_db(ffffffff83916ff0) 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(ffffffff8396a1c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8396a1c0) 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(ffffffff8396a1c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8396a1c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x737eeb4c6fe0, count: -11 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: 0x7493302f3870, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7493302f3870, count: -1