uvm_fault(0xfffffd807e889738, 0x7, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      ktrops+0x4e:    movq    0x8(%rbx),%r14
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*257038  42635      0           0  0x4000000    0  syz-executor.0
ktrops(ffff80002173aa90,ffffffffffffffff,0,80001b04,fffffd8057a59000,fffffd807f7d7410) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:700 [inline]
ktrops(ffff80002173aa90,ffffffffffffffff,0,80001b04,fffffd8057a59000,fffffd807f7d7410) at ktrops+0x4e sys/kern/kern_ktrace.c:543
doktrace(fffffd8057a59000,4,1b04,0,ffff80002173aa90) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:568 [inline]
doktrace(fffffd8057a59000,4,1b04,0,ffff80002173aa90) at doktrace+0x524 sys/kern/kern_ktrace.c:490
sys_ktrace(ffff80002173aa90,ffff8000231abea0,ffff8000231abef0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:531
syscall(ffff8000231abf70) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xba277c85a60, count: 10
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