F2FS-fs (loop5): Corrupted extension count (64 + 1 > 64)
F2FS-fs (loop5): Can't find valid F2FS filesystem in 1th superblock
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UBSAN: shift-out-of-bounds in fs/f2fs/super.c:942:5
shift exponent 159 is too large for 64-bit type 'unsigned long'
CPU: 0 PID: 707 Comm: syz.5.104 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 ubsan_epilogue+0xe/0x40 lib/ubsan.c:151
 __ubsan_handle_shift_out_of_bounds+0x37c/0x400 lib/ubsan.c:321
 parse_options+0x4aa0/0x4ab0 fs/f2fs/super.c:942
 f2fs_fill_super+0x22b6/0x6e20 fs/f2fs/super.c:4397
 mount_bdev+0x2bc/0x3f0 fs/super.c:1445
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4836
 legacy_get_tree+0xfe/0x1a0 fs/fs_context.c:632
 vfs_get_tree+0x9a/0x270 fs/super.c:1575
 do_new_mount+0x25a/0xa20 fs/namespace.c:3078
 path_mount+0x659/0xfc0 fs/namespace.c:3408
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3606
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3606
 x64_sys_call+0x65d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f059159c14a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0592488e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0592488ee0 RCX: 00007f059159c14a
RDX: 00002000000001c0 RSI: 0000200000000000 RDI: 00007f0592488ea0
RBP: 00002000000001c0 R08: 00007f0592488ee0 R09: 000000000000401e
R10: 000000000000401e R11: 0000000000000246 R12: 0000200000000000
R13: 00007f0592488ea0 R14: 0000000000005523 R15: 0000200000000b80
 </TASK>
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F2FS-fs (loop5): Not support 2147483648, larger than 256