uvm_fault(0xfffff5006c6bd9a0, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82ffc818 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff800038b9e2c0 gsbase 0xffff80002999dff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82ffc818 Starting stack trace... panic(ffffffff834ea016) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff800038b9e210) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80002a2202b0,fffff50068425cd0,ffff800038b9e3f0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690 sys_futimes(ffff80002a2202b0,ffff800038b9e540,ffff800038b9e490) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2732 syscall(ffff800038b9e540) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038b9e540) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x34e71118a80, 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 124714 67657 0 0 0 0 syz-executor * 79917 71344 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x703e109d3410, 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(0xfffff5006c6bd9a0, 0x98, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x703e109d3410, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002ef86200 rbx 0 rdx 0 rcx 0xffff80002a2214d8 rax 0x2a r8 0xffff80002ef86130 r9 0x1 r10 0x6c035226bf534777 r11 0x3302a78f373ad3c4 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff822964c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002ef86180 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=79917 pid=71344 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=0xffff80002a220d10,0xffff80002a2202c0 process=0xffff8000fffee1c8 user=0xffff80002ef81000, vmspace=0xfffff5006c6bd5d0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67657 124714 77213 0 7 0 syz-executor *71344 79917 98224 0 7 0 syz-executor 53426 87520 68380 0 2 0 syz-executor 53426 241590 68380 0 3 0x4000000 sbar syz-executor 96838 434300 47221 0 2 0 syz-executor 96838 293961 47221 0 3 0x4000080 ttyin syz-executor 91907 172588 54999 0 2 0 syz-executor 91907 335883 54999 0 3 0x4000080 fsleep syz-executor 63981 206771 36726 0 2 0x1 syz-executor 63981 243901 36726 0 3 0x4000081 fifor syz-executor 63981 431677 36726 0 3 0x4000081 fsleep syz-executor 60421 335748 33300 0 3 0x80 nanoslp syz-executor 60421 62825 33300 0 3 0x4000080 kqsel syz-executor 60421 244350 33300 0 3 0x4000080 fsleep syz-executor 36726 129200 20501 0 3 0x82 nanoslp syz-executor 33300 406176 20501 0 3 0x82 nanoslp syz-executor 54999 148133 20501 0 3 0x82 nanoslp syz-executor 68380 23473 20501 0 3 0x82 nanoslp syz-executor 84406 522663 20501 0 3 0x82 nanoslp syz-executor 77213 311215 20501 0 3 0x82 nanoslp syz-executor 47221 368487 20501 0 3 0x82 nanoslp syz-executor 98224 222664 20501 0 3 0x82 nanoslp syz-executor 20501 23257 50789 0 3 0x82 kqread syz-executor 50789 104775 54960 0 3 0x10008a sigsusp ksh 54960 239573 39594 0 3 0x98 kqread sshd-session 39594 504556 96674 0 3 0x92 kqread sshd-session 4359 375706 1 0 3 0x100083 ttyin getty 96674 84971 1 0 3 0x88 kqread sshd 70010 413657 41645 74 3 0x1100092 bpf pflogd 41645 313202 1 0 3 0x80 sbwait pflogd 93700 448472 25315 73 3 0x1100090 kqread syslogd 25315 494043 1 0 3 0x100082 sbwait syslogd 93560 521833 1 0 3 0x100080 kqread resolvd 55865 257526 82237 77 3 0x100092 kqread dhcpleased 81372 199212 82237 77 3 0x100092 kqread dhcpleased 82237 345933 1 0 3 0x80 kqread dhcpleased 42437 275314 0 0 2 0x40014200 smr 30647 145500 0 0 2 0x14200 zerothread 41542 265233 0 0 3 0x14200 aiodoned aiodoned 27823 272986 0 0 3 0x14200 syncer update 78039 226972 0 0 3 0x14200 cleaner cleaner 11848 188849 0 0 3 0x14200 reaper reaper 61591 84077 0 0 3 0x14200 pgdaemon pagedaemon 15466 445237 0 0 3 0x14200 bored viomb 80907 511782 0 0 3 0x40014200 acpi0 acpi0 6701 60676 0 0 3 0x40014200 idle1 68444 310369 0 0 3 0x14200 bored softnet1 19799 16161 0 0 2 0x14200 softnet0 22129 289834 0 0 2 0x40014200 systqmp 36796 172915 0 0 3 0x14200 bored systq 53097 85971 0 0 3 0x14200 tmoslp softclockmp 95822 128403 0 0 3 0x40014200 tmoslp softclock 37464 520445 0 0 3 0x40014200 idle0 1 363727 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 53426 (syz-executor) thread 0xffff80002a2202b0 (241590) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a20e40) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11077 12221K 12414K 166960K 12199 0 pcb 17 12K 12K 166960K 26 0 rtable 223 6K 7K 166960K 369 0 pf 34 17K 21K 166960K 53 0 ifaddr 43 7K 7K 166960K 46 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 70 0 ioctlops 0 0K 4K 166960K 1493 0 iov 0 0K 4K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1301 82K 82K 166960K 1392 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 169 0 proc 71 115K 164K 166960K 557 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 4 0 in_multi 99 7K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 2 0 mrt 2 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 383 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 225 151K 167K 166960K 3241 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 43 86K 106K 166960K 1325 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 28 2K 2K 166960K 28 0 temp 37 9110K 9118K 166960K 6615 0 kqueue 14 22K 24K 166960K 31 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 36 0 33 1 0 1 1 0 8 0 rtentry 176 112 0 12 5 0 5 5 0 8 0 unpcb 144 51 0 32 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 15 0 9 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 100 0 91 2 0 2 2 0 8 1 nd6 152 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 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 21 0 0 1 0 1 1 0 8 0 pfstkey 128 21 0 0 1 0 1 1 0 8 0 pfstate 448 21 0 0 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 484 0 41 31 0 31 31 0 8 1 art_table 40 485 0 41 5 0 5 5 0 8 0 art_node 32 112 0 22 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1619 0 148 93 0 93 93 0 8 0 ffsino 296 1619 0 148 114 0 114 114 0 8 0 nchpl 144 1866 0 165 64 0 64 64 0 8 0 vnodes 216 1730 0 0 97 0 97 97 0 8 0 namei 1024 5684 0 5684 2 0 2 2 0 8 2 percpumem 16 50 0 0 1 0 1 1 0 8 0 kstatmem 264 27 0 0 2 0 2 2 0 8 0 scxspl 216 6387 0 6387 4 2 2 3 1 8 2 plimitpl 152 31 0 14 1 0 1 1 0 8 0 sigapl 424 486 0 438 7 0 7 7 0 8 1 knotepl 120 263 0 0 8 0 8 8 0 8 0 kqueuepl 224 32 0 20 1 0 1 1 0 8 0 pipepl 344 126 0 99 3 0 3 3 0 8 0 fdescpl 528 470 0 438 3 0 3 3 0 8 0 filepl 160 1743 0 1518 10 0 10 10 0 8 0 lockfpl 104 15 0 12 1 0 1 1 0 8 0 lockfspl 48 9 0 6 1 0 1 1 0 8 0 sessionpl 144 26 0 16 1 0 1 1 0 8 0 pgrppl 48 36 0 18 1 0 1 1 0 8 0 ucredpl 104 124 0 111 1 0 1 1 0 8 0 zombiepl 144 439 0 438 1 0 1 1 0 8 0 processpl 1232 486 0 438 5 0 5 5 0 8 1 procpl 664 546 0 491 6 0 6 6 0 8 0 sockpl 752 188 0 157 4 0 4 4 0 8 0 mcl64k 65536 3 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 116 0 0 15 0 15 15 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 256 171 0 0 11 0 11 11 0 8 0 bufpl 272 2370 0 105 151 0 151 151 0 8 0 anonpl 32 3622 0 0 30 0 30 30 0 246 0 amapchunkpl 152 8881 0 8425 27 0 27 27 0 158 7 amappl16 200 984 0 961 4 0 4 4 0 8 2 amappl15 192 3 0 3 1 0 1 1 0 8 1 amappl14 184 430 0 429 1 0 1 1 0 8 0 amappl13 176 144 0 132 1 0 1 1 0 8 0 amappl12 168 717 0 687 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 0 1 1 0 8 1 amappl10 152 62 0 48 1 0 1 1 0 8 0 amappl9 144 275 0 275 1 0 1 1 0 8 1 amappl8 136 100 0 98 1 0 1 1 0 8 0 amappl7 128 149 0 135 1 0 1 1 0 8 0 amappl6 120 167 0 166 1 0 1 1 0 8 0 amappl5 112 97 0 87 1 0 1 1 0 8 0 amappl4 104 294 0 274 1 0 1 1 0 8 0 amappl3 96 1637 0 1528 4 0 4 4 0 8 1 amappl2 88 538 0 474 2 0 2 2 0 8 0 amappl1 80 10387 0 9785 16 1 15 16 0 8 2 amappl 88 2518 0 2364 4 0 4 4 0 92 0 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 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 470 0 438 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 470 0 438 1 0 1 1 0 8 0 vmmpekpl 168 5894 0 5863 2 0 2 2 0 8 0 vmmpepl 168 38379 0 36444 89 0 89 89 0 357 3 vmsppl 488 469 0 438 5 0 5 5 0 8 1 rwobjpl 80 13862 0 12840 25 0 25 25 0 8 3 pdppl 4096 947 0 876 95 12 83 83 0 8 12 pvpl 32 10043 0 0 81 0 81 81 0 265 0 pmappl 256 469 0 438 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 421 0 15 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8391bff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83a20640) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a20640) at __mp_lock+0x1a3 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(ffffffff83a20640) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a20640) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:153 syscall(ffff80003abbbff0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80003abbbff0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 end trace frame: 0xffff80003abbc070, count: 0 ddb{0}> trace x86_ipi_db(ffffffff8391bff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83a20640) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a20640) at __mp_lock+0x1a3 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(ffffffff83a20640) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a20640) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:153 syscall(ffff80003abbbff0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80003abbbff0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74a5bbe474f0, count: -15 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: 0x703e109d3410, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x703e109d3410, count: -1