Warning: Permanently added '10.128.10.11' (ED25519) to the list of known hosts. executing program [ 37.050750][ T4217] loop0: detected capacity change from 0 to 128 [ 37.055598][ T4217] ================================================================================ [ 37.058264][ T4217] UBSAN: shift-out-of-bounds in fs/befs/super.c:96:9 [ 37.059980][ T4217] shift exponent 3229888891 is too large for 32-bit type 'int' [ 37.062243][ T4217] CPU: 0 PID: 4217 Comm: syz-executor212 Not tainted 6.1.43-syzkaller #0 [ 37.064496][ T4217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 37.067155][ T4217] Call trace: [ 37.068158][ T4217] dump_backtrace+0x1c8/0x1f4 [ 37.069400][ T4217] show_stack+0x2c/0x3c [ 37.070548][ T4217] dump_stack_lvl+0x108/0x170 [ 37.071821][ T4217] dump_stack+0x1c/0x58 [ 37.072945][ T4217] __ubsan_handle_shift_out_of_bounds+0x2f4/0x36c [ 37.074881][ T4217] befs_check_sb+0x480/0x4a0 [ 37.076162][ T4217] befs_fill_super+0x8a0/0xdb0 [ 37.077461][ T4217] mount_bdev+0x274/0x370 [ 37.078608][ T4217] befs_mount+0x44/0x58 [ 37.079715][ T4217] legacy_get_tree+0xd4/0x16c [ 37.081171][ T4217] vfs_get_tree+0x90/0x274 [ 37.082389][ T4217] do_new_mount+0x25c/0x8c4 [ 37.083581][ T4217] path_mount+0x590/0xe58 [ 37.084779][ T4217] __arm64_sys_mount+0x45c/0x594 [ 37.086268][ T4217] invoke_syscall+0x98/0x2c0 [ 37.087528][ T4217] el0_svc_common+0x138/0x258 [ 37.088782][ T4217] do_el0_svc+0x64/0x218 [ 37.089992][ T4217] el0_svc+0x58/0x168 [ 37.091068][ T4217] el0t_64_sync_handler+0x84/0xf0 [ 37.092613][ T4217] el0t_64_sync+0x18c/0x190 [ 37.093940][ T4217] ================================================================================ [ 37.096295][ T4217] befs: (loop0): block_shift disagrees with block_size. Corruption likely.