loop0: detected capacity change from 0 to 512
EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support!
EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode
================================================================================
UBSAN: shift-out-of-bounds in fs/ext4/super.c:4424:27
shift exponent 807429217 is too large for 32-bit type 'int'
CPU: 1 PID: 310 Comm: syz-executor316 Not tainted 5.15.178-syzkaller-00013-g7d1f9b5c2ff5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x151/0x1c0 lib/dump_stack.c:106
dump_stack+0x15/0x20 lib/dump_stack.c:113
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_shift_out_of_bounds+0x3bf/0x420 lib/ubsan.c:321
ext4_fill_super+0x7491/0x96e0 fs/ext4/super.c:4424
mount_bdev+0x282/0x3b0 fs/super.c:1400
ext4_mount+0x34/0x40 fs/ext4/super.c:6594
legacy_get_tree+0xf1/0x190 fs/fs_context.c:611
vfs_get_tree+0x88/0x290 fs/super.c:1530
do_new_mount+0x2ba/0xb30 fs/namespace.c:3012
path_mount+0x671/0x1070 fs/namespace.c:3342
do_mount fs/namespace.c:3355 [inline]
__do_sys_mount fs/namespace.c:3563 [inline]
__se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3540
__x64_sys_mount+0xbf/0xd0 fs/namespace.c:3540
x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
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: 0033:0x7ff437a92e2a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 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:00007ff437a4e088 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff437a4e0a0 RCX: 00007ff437a92e2a
RDX: 0000400000000040 RSI: 0000400000000000 RDI: 00007ff437a4e0a0
RBP: 0000400000000000 R08: 00007ff437a4e0e0 R09: 00007ff437a4e0e0
R10: 000000000200010e R11: 0000000000000246 R12: 0000400000000040
R13: 00007ff437a4e0e0 R14: 0000000000000004 R15: 000000000200010e
</TASK>
================================================================================
EXT4-fs (loop0): fragment/cluster size (2048) != block size (1024)