uvm_fault(0xfffffd806c9b75d0, 0xf, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff8135b868 cs 8 rflags 10246 cr2 f cpl 0 rsp ffff80002a83ede0
gsbase 0xffffffff837aeff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff8135b868
Starting stack trace...
panic(ffffffff833aa37d) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff80002a83ed30) at kerntrap+0x2fb
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
ktrops(ffff800035d167f0,ffffffffffffffff,0,80000538,fffffd806b00b8a8,fffffd8007bfd548) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline]
ktrops(ffff800035d167f0,ffffffffffffffff,0,80000538,fffffd806b00b8a8,fffffd8007bfd548) at ktrops+0x58 sys/kern/kern_ktrace.c:570
doktrace(fffffd806b00b8a8,4,538,0,ffff800035d167f0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline]
doktrace(fffffd806b00b8a8,4,538,0,ffff800035d167f0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517
sys_ktrace(ffff800035d167f0,ffff80002a83f140,ffff80002a83f090) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558
syscall(ffff80002a83f140) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a83f140) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x63a6ab855e0, count: 249
End of stack trace.
WARNING: SPL NOT LOWERED ON SYSCALL 91 -10456216 EXIT 0 3
Stopped at      savectx+0xae:   movl    $0,%gs:0x688
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*362222  48555      0         0x2          0    0  syz-executor
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7442ff607350, count: 14
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