uvm_fault(0xffffffff83a771c8, 0xffff800029e25166, 0, 2) -> d
kernel: page fault trap, code=2
Stopped at      memset+0x49:    repe stosb      %es:(%rdi)
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*394423  93851      0         0x2        0x1    0  syz-executor
memset() at memset+0x49
ffs_write(ffff80002a7d1240) at ffs_write+0xb9a sys/ufs/ffs/ffs_vnops.c:401
VOP_WRITE(fffff1806d11f6f0,ffff80002a7d12f0,3,fffff18007ffd5b0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff80002a766540,fffff1806d11f6f0,fffff18007ffd5b0,ffff80002a7d13c0,ffff80002a7d13a0) at ktrwriteraw+0x19b sys/kern/kern_ktrace.c:692
ktrsysret(ffff80002a766540,88,16,ffff80002a7d1480) at ktrsysret+0x17f ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline]
ktrsysret(ffff80002a766540,88,16,ffff80002a7d1480) at ktrsysret+0x17f sys/kern/kern_ktrace.c:209
syscall(ffff80002a7d1530) at syscall+0xad9 mi_syscall_return sys/sys/syscall_mi.h:204 [inline]
syscall(ffff80002a7d1530) at syscall+0xad9 sys/arch/amd64/amd64/trap.c:804
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7117fd21b5f0, count: 8
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