syz_open_dev$tty1(0xc, 0x4, 0x1)
r0 = signalfd4(0xffffffffffffffff, &(0x7f00000000c0), 0x8, 0x0)
r1 = syz_io_uring_setup(0x5c0b, &(0x7f0000000200), &(0x7f0000ffb000/0x3000)=nil, &(0x7f0000ffc000/0x3000)=nil, &(0x7f0000000180)=<r2=>0x0, &(0x7f0000002a40)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000040)=@IORING_OP_POLL_ADD={0x6, 0x0, 0x0, @fd_index=0x4}, 0x0)
io_uring_enter(r1, 0x56db, 0x0, 0x0, 0x0, 0x0)
signalfd4(r0, &(0x7f0000000480), 0x8, 0x0)