uvm_fault(0xffffffff83a4c9e0, 0xffff80001bc62e2a, 0, 2) -> d
kernel: page fault trap, code=2
Stopped at      memset+0x49:    repe stosb      %es:(%rdi)
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
* 23137  41251      0           0  0x4000001    0  syz-executor
memset() at memset+0x49
ffs_write(ffff800035cc36f0) at ffs_write+0xb9a sys/ufs/ffs/ffs_vnops.c:401
VOP_WRITE(fffffd807a5e7710,ffff800035cc37a0,3,fffffd8007ffd068) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff800036ce27f0,fffffd807a5e7710,fffffd8007ffd068,ffff800035cc3870,ffff800035cc3850) at ktrwriteraw+0x19b sys/kern/kern_ktrace.c:692
ktrsysret(ffff800036ce27f0,36,0,ffff800035cc3930) at ktrsysret+0x17f ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline]
ktrsysret(ffff800036ce27f0,36,0,ffff800035cc3930) at ktrsysret+0x17f sys/kern/kern_ktrace.c:209
syscall(ffff800035cc39e0) at syscall+0xad9 mi_syscall_return sys/sys/syscall_mi.h:204 [inline]
syscall(ffff800035cc39e0) at syscall+0xad9 sys/arch/amd64/amd64/trap.c:804
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3e2f7a3b9f0, count: 8
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