Warning: Permanently added '10.128.0.21' (ECDSA) to the list of known hosts. executing program [ 37.038721][ T4216] loop0: detected capacity change from 0 to 512 [ 37.044474][ T4216] EXT2-fs (loop0): (no)user_xattr optionsnot supported [ 37.047023][ T4216] ================================================================================ [ 37.049043][ T4216] UBSAN: shift-out-of-bounds in fs/ext2/super.c:1015:40 [ 37.050486][ T4216] shift exponent 63 is too large for 32-bit type 'int' [ 37.051983][ T4216] CPU: 1 PID: 4216 Comm: syz-executor410 Not tainted 6.1.32-syzkaller #0 [ 37.053847][ T4216] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 37.056204][ T4216] Call trace: [ 37.056984][ T4216] dump_backtrace+0x1c8/0x1f4 [ 37.058027][ T4216] show_stack+0x2c/0x3c [ 37.058982][ T4216] dump_stack_lvl+0x108/0x170 [ 37.060045][ T4216] dump_stack+0x1c/0x58 [ 37.061014][ T4216] __ubsan_handle_shift_out_of_bounds+0x2f4/0x36c [ 37.062617][ T4216] ext2_fill_super+0x2270/0x2450 [ 37.063721][ T4216] mount_bdev+0x274/0x370 [ 37.064783][ T4216] ext2_mount+0x44/0x58 [ 37.065748][ T4216] legacy_get_tree+0xd4/0x16c [ 37.066873][ T4216] vfs_get_tree+0x90/0x274 [ 37.067893][ T4216] do_new_mount+0x25c/0x8c4 [ 37.068972][ T4216] path_mount+0x590/0xe58 [ 37.070071][ T4216] __arm64_sys_mount+0x45c/0x594 [ 37.071269][ T4216] invoke_syscall+0x98/0x2c0 [ 37.072317][ T4216] el0_svc_common+0x138/0x258 [ 37.073440][ T4216] do_el0_svc+0x64/0x218 [ 37.074402][ T4216] el0_svc+0x58/0x168 [ 37.075283][ T4216] el0t_64_sync_handler+0x84/0xf0 [ 37.076448][ T4216] el0t_64_sync+0x18c/0x190 [ 37.078163][ T4216] ================================================================================ [ 37.080240][ T4216] EXT2-fs (loop0): error: can't find an ext2 filesystem on dev loop0.