Warning: Permanently added '10.128.0.221' (ED25519) to the list of known hosts. executing program syzkaller login: [ 69.861960][ T4028] loop0: detected capacity change from 0 to 40427 [ 69.941316][ T4028] F2FS-fs (loop0): Insane cp_payload (553648128 >= 504) [ 69.943285][ T4028] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock [ 69.945845][ T4028] ================================================================================ [ 69.948461][ T4028] UBSAN: shift-out-of-bounds in fs/f2fs/super.c:904:5 [ 69.950356][ T4028] shift exponent 150 is too large for 32-bit type 'int' [ 69.952511][ T4028] CPU: 0 PID: 4028 Comm: syz-executor287 Not tainted 5.15.182-syzkaller #0 [ 69.954778][ T4028] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 69.957411][ T4028] Call trace: [ 69.958248][ T4028] dump_backtrace+0x0/0x43c [ 69.959430][ T4028] show_stack+0x2c/0x3c [ 69.960604][ T4028] __dump_stack+0x30/0x40 [ 69.961769][ T4028] dump_stack_lvl+0xf8/0x160 [ 69.963025][ T4028] dump_stack+0x1c/0x5c [ 69.964114][ T4028] ubsan_epilogue+0x14/0x48 [ 69.965375][ T4028] __ubsan_handle_shift_out_of_bounds+0x2b4/0x358 [ 69.967063][ T4028] parse_options+0x3bd4/0x3bd8 [ 69.968434][ T4028] f2fs_fill_super+0x194c/0x5d84 [ 69.969760][ T4028] mount_bdev+0x264/0x358 [ 69.970975][ T4028] f2fs_mount+0x44/0x58 [ 69.972131][ T4028] legacy_get_tree+0xd4/0x16c [ 69.973466][ T4028] vfs_get_tree+0x90/0x274 [ 69.974679][ T4028] do_new_mount+0x228/0x810 [ 69.975940][ T4028] path_mount+0x5b4/0x1000 [ 69.977099][ T4028] __arm64_sys_mount+0x514/0x5e4 [ 69.978440][ T4028] invoke_syscall+0x98/0x2b8 [ 69.979699][ T4028] el0_svc_common+0x138/0x258 [ 69.980969][ T4028] do_el0_svc+0x58/0x14c [ 69.982125][ T4028] el0_svc+0x78/0x1e0 [ 69.983228][ T4028] el0t_64_sync_handler+0xcc/0xe4 [ 69.984601][ T4028] el0t_64_sync+0x1a0/0x1a4 [ 69.987762][ T4028] ================================================================================ [ 69.990458][ T4028] F2FS-fs (loop0): Not support 4194304, larger than 256