================================================================================
UBSAN: shift-out-of-bounds in fs/ext4/super.c:2490:15
shift exponent 863936 is too large for 32-bit type 'int'
CPU: 1 PID: 977 Comm: syz-executor138 Not tainted 5.15.78-syzkaller-00911-gc73b4619ad86 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __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+0x3a6/0x430 lib/ubsan.c:330
 parse_options+0x2d21/0x2da0 fs/ext4/super.c:2490
 ext4_fill_super+0x1fee/0x9650 fs/ext4/super.c:4166
 mount_bdev+0x280/0x3b0 fs/super.c:1369
 ext4_mount+0x34/0x40 fs/ext4/super.c:6540
 legacy_get_tree+0xf0/0x190 fs/fs_context.c:610
 vfs_get_tree+0x88/0x290 fs/super.c:1499
 do_new_mount+0x289/0xad0 fs/namespace.c:2994
 path_mount+0x60b/0x1050 fs/namespace.c:3324
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x2d2/0x3c0 fs/namespace.c:3522
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3522
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f6fa10609aa
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6fa100b078 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6fa10609aa
RDX: 0000000020000740 RSI: 0000000020000100 RDI: 00007f6fa100b090
RBP: 0000000000000007 R08: 00007f6fa100b0d0 R09: 0000000000000742
R10: 0000000000804810 R11: 0000000000000202 R12: 00007f6fa100b6b8
R13: 00007f6fa100b090 R14: 00007f6fa100b0d0 R15: 0000000000804810
 </TASK>
================================================================================
EXT4-fs (loop2): Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE
EXT4-fs (loop2): feature flags set on rev 0 fs, running e2fsck is recommended
EXT4-fs (loop2): Couldn't mount because of unsupported optional features (c0828)