On Thu, 6 Apr 2023 14:34:50 +0800 YueHaibing wrote: > UBSAN: shift-out-of-bounds in net/ipv4/tcp_input.c:555:23 > shift exponent 255 is too large for 32-bit type 'int' > CPU: 1 PID: 7907 Comm: ssh Not tainted 6.3.0-rc4-00161-g62bad54b26db-dirty #206 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 > Call Trace: > <TASK> > dump_stack_lvl+0x136/0x150 > __ubsan_handle_shift_out_of_bounds+0x21f/0x5a0 > tcp_init_transfer.cold+0x3a/0xb9 > tcp_finish_connect+0x1d0/0x620 > tcp_rcv_state_process+0xd78/0x4d60 > tcp_v4_do_rcv+0x33d/0x9d0 > __release_sock+0x133/0x3b0 > release_sock+0x58/0x1b0 > > 'maxwin' is int, shifting int for 32 or more bits is undefined behaviour. > > Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx> Fixes tag?
