Warning: Permanently added '10.128.0.138' (ECDSA) to the list of known hosts. executing program [ 42.646712][ T3963] loop0: detected capacity change from 0 to 512 [ 42.651441][ T3963] ================================================================================ [ 42.653833][ T3963] UBSAN: shift-out-of-bounds in fs/ext2/super.c:950:25 [ 42.655292][ T3963] shift exponent 63 is too large for 32-bit type 'int' [ 42.656774][ T3963] CPU: 0 PID: 3963 Comm: syz-executor132 Not tainted 5.15.110-syzkaller #0 [ 42.658641][ T3963] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 [ 42.660683][ T3963] Call trace: [ 42.661322][ T3963] dump_backtrace+0x0/0x530 [ 42.662353][ T3963] show_stack+0x2c/0x3c [ 42.663267][ T3963] dump_stack_lvl+0x108/0x170 [ 42.664280][ T3963] dump_stack+0x1c/0x58 [ 42.665115][ T3963] __ubsan_handle_shift_out_of_bounds+0x2f8/0x378 [ 42.666498][ T3963] ext2_fill_super+0x2124/0x2390 [ 42.667564][ T3963] mount_bdev+0x26c/0x368 [ 42.668518][ T3963] ext2_mount+0x44/0x58 [ 42.669383][ T3963] legacy_get_tree+0xd4/0x16c [ 42.670387][ T3963] vfs_get_tree+0x90/0x274 [ 42.671344][ T3963] do_new_mount+0x25c/0x8c8 [ 42.672352][ T3963] path_mount+0x590/0x104c [ 42.673235][ T3963] __arm64_sys_mount+0x510/0x5e0 [ 42.674320][ T3963] invoke_syscall+0x98/0x2b8 [ 42.675275][ T3963] el0_svc_common+0x138/0x258 [ 42.676276][ T3963] do_el0_svc+0x58/0x14c [ 42.677183][ T3963] el0_svc+0x7c/0x1f0 [ 42.678027][ T3963] el0t_64_sync_handler+0x84/0xe4 [ 42.679033][ T3963] el0t_64_sync+0x1a0/0x1a4 [ 42.680078][ T3963] ================================================================================ [ 42.682895][ T3963] EXT2-fs (loop0): error: bad blocksize 0