================================================================================ UBSAN: shift-out-of-bounds in fs/ext4/super.c:2502:15 shift exponent 1767406811 is too large for 32-bit type 'int' CPU: 0 PID: 4267 Comm: syz.3.79 Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 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:2502 ext4_remount+0xacb/0x2f70 fs/ext4/super.c:5813 reconfigure_super+0x43a/0x870 fs/super.c:936 do_remount fs/namespace.c:2661 [inline] path_mount+0xceb/0x10a0 fs/namespace.c:3327 do_mount fs/namespace.c:3348 [inline] __do_sys_mount fs/namespace.c:3556 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3533 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fac7823d79a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fac766b3e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fac766b3ef0 RCX: 00007fac7823d79a RDX: 0000000020000180 RSI: 0000000020000100 RDI: 0000000000000000 RBP: 0000000020000180 R08: 00007fac766b3ef0 R09: 0000000000000064 R10: 0000000000000064 R11: 0000000000000246 R12: 0000000020000100 R13: 00007fac766b3eb0 R14: 0000000000000000 R15: 00000000200001c0 ================================================================================