uvm_fault(0xffffffff83a77a80, 0xffff800022393d48, 0, 1) -> d
kernel: page fault trap, code=0
Stopped at      ffs2_balloc+0xa0d:      movq    0(%rcx,%rax,8),%r14
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
  41074  26741      0           0          0    0  syz-executor
*328767  86788      0      0x1000  0x4080000    1K syz-executor
ffs2_balloc(fffffd80666f1840,ed4000,4000,fffffd80097fd750,2,ffff80002eb985e8) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614
ffs_write(ffff80002eb98670) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345
VOP_WRITE(fffffd805f388108,ffff80002eb98828,7,fffffd80097fd750) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
vn_write(fffffd806e9655b0,ffff80002eb98828,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:414
dofilewritev(ffff80002a231ca0,25,ffff80002eb98828,0,ffff80002eb988e0) at dofilewritev+0x2bd sys/kern/sys_generic.c:384
sys_write(ffff80002a231ca0,ffff80002eb98990,ffff80002eb988e0) at sys_write+0xa2 sys/kern/sys_generic.c:300
syscall(ffff80002eb98990) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002eb98990) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x80ba2c95fd0, count: 7
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