uvm_fault(0xffffffff83aad520, 0xffff80001c3f2de8, 0, 2) -> d
kernel: page fault trap, code=2
Stopped at      memset+0x52:    repe stosq      %es:(%rdi)
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
* 40329   7225      0           0  0x4000001    1K syz-executor
 482257  29159      0           0          0    0  syz-executor
memset() at memset+0x52
ffs_write(ffff80003c3bed50) at ffs_write+0xb9a sys/ufs/ffs/ffs_vnops.c:401
VOP_WRITE(fffffd806b262290,ffff80003c3bee00,3,fffffd80097fd5b0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff80003c3d3cb0,fffffd806b262290,fffffd80097fd5b0,ffff80003c3beed0,ffff80003c3beeb0) at ktrwriteraw+0x1be sys/kern/kern_ktrace.c:692
ktrsysret(ffff80003c3d3cb0,36,0,ffff80003c3befa0) at ktrsysret+0x192 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline]
ktrsysret(ffff80003c3d3cb0,36,0,ffff80003c3befa0) at ktrsysret+0x192 sys/kern/kern_ktrace.c:209
syscall(ffff80003c3bf050) at syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline]
syscall(ffff80003c3bf050) at syscall+0xa51 sys/arch/amd64/amd64/trap.c:804
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x19c75021600, count: 8
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