EXT4-fs (loop2): 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:2493:15 shift exponent 1919383155 is too large for 32-bit type 'int' CPU: 0 PID: 401 Comm: syz-executor.2 Not tainted 5.15.148-syzkaller-1069047-g993bed180178 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 dump_stack+0x15/0x17 lib/dump_stack.c:113 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_shift_out_of_bounds+0x3bf/0x420 lib/ubsan.c:321 parse_options+0x2c9d/0x2d20 fs/ext4/super.c:2493 ext4_fill_super+0x2084/0x96e0 fs/ext4/super.c:4167 mount_bdev+0x282/0x3b0 fs/super.c:1387 ext4_mount+0x34/0x40 fs/ext4/super.c:6581 legacy_get_tree+0xf1/0x190 fs/fs_context.c:611 vfs_get_tree+0x88/0x290 fs/super.c:1517 do_new_mount+0x2ba/0xb30 fs/namespace.c:3005 path_mount+0x671/0x1070 fs/namespace.c:3335 do_mount fs/namespace.c:3348 [inline] __do_sys_mount fs/namespace.c:3556 [inline] __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3533 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3533 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: 0033:0x7fdbd53ca22a 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:00007fdbd4f4aee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fdbd4f4af80 RCX: 00007fdbd53ca22a RDX: 0000000020000040 RSI: 0000000020000500 RDI: 00007fdbd4f4af40 RBP: 0000000020000040 R08: 00007fdbd4f4af80 R09: 0000000000004500 R10: 0000000000004500 R11: 0000000000000246 R12: 0000000020000500 R13: 00007fdbd4f4af40 R14: 00000000000004b4 R15: 00000000200003c0 ================================================================================ EXT4-fs (loop2): Magic mismatch, very weird!