loop0: detected capacity change from 0 to 512 EXT4-fs (loop0): Mount option "nouser_xattr" will be removed by 3.5 Contact linux-ext4@vger.kernel.org if you think we should keep it. ================================================================================ UBSAN: shift-out-of-bounds in fs/ext4/super.c:2494:15 shift exponent 1919383155 is too large for 32-bit type 'int' CPU: 0 PID: 4037 Comm: syz-executor.0 Not tainted 5.15.138-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_shift_out_of_bounds+0x3bf/0x420 lib/ubsan.c:321 parse_options+0x324d/0x32b0 fs/ext4/super.c:2494 ext4_fill_super+0x236e/0xa110 fs/ext4/super.c:4168 mount_bdev+0x2c9/0x3f0 fs/super.c:1387 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1517 do_new_mount+0x28b/0xae0 fs/namespace.c:2994 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fc7bc6e51ea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc7bba64ee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fc7bba64f80 RCX: 00007fc7bc6e51ea RDX: 0000000020000040 RSI: 0000000020000500 RDI: 00007fc7bba64f40 RBP: 0000000020000040 R08: 00007fc7bba64f80 R09: 0000000000004500 R10: 0000000000004500 R11: 0000000000000246 R12: 0000000020000500 R13: 00007fc7bba64f40 R14: 00000000000004b4 R15: 00000000200003c0 ================================================================================