EXT4-fs (loop2): resizing filesystem from 0 to 8 blocks
------------[ cut here ]------------
kernel BUG at fs/ext4/resize.c:544!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 473 Comm: syz.2.16 Not tainted 5.10.237-syzkaller-1007464-g7e2543346ff7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:setup_new_flex_group_blocks fs/ext4/resize.c:543 [inline]
RIP: 0010:ext4_flex_group_add+0x4c17/0x4c20 fs/ext4/resize.c:1499
Code: ff ff e8 6c 72 8d ff 0f 0b e8 65 72 8d ff 0f 0b e8 5e 72 8d ff 0f 0b e8 57 72 8d ff 0f 0b e8 50 72 8d ff 0f 0b e8 49 72 8d ff <0f> 0b e8 42 72 8d ff 0f 0b 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc90001617440 EFLAGS: 00010293
RAX: ffffffff81d620b7 RBX: ffff888115c57400 RCX: ffff888116c92780
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90001617710 R08: 0000000000000004 R09: 0000000000000003
R10: fffff520002c2e70 R11: 1ffff920002c2e70 R12: 1ffff11022ebdb00
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000001
FS:  00007f8fe459b6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8fe457ad58 CR3: 000000011747c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_resize_fs+0x330f/0x40c0 fs/ext4/resize.c:2105
 __ext4_ioctl fs/ext4/ioctl.c:1088 [inline]
 ext4_ioctl+0x2397/0x3960 fs/ext4/ioctl.c:1334
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x121/0x1a0 fs/ioctl.c:739
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:739
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f8fe4b2a969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f8fe459b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8fe4d51fa0 RCX: 00007f8fe4b2a969
RDX: 0000200000000140 RSI: 0000000040086610 RDI: 0000000000000004
RBP: 00007f8fe4bacab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8fe4d51fa0 R15: 00007ffdc1615848
Modules linked in:
---[ end trace c91ea74eba03578c ]---
RIP: 0010:setup_new_flex_group_blocks fs/ext4/resize.c:543 [inline]
RIP: 0010:ext4_flex_group_add+0x4c17/0x4c20 fs/ext4/resize.c:1499
Code: ff ff e8 6c 72 8d ff 0f 0b e8 65 72 8d ff 0f 0b e8 5e 72 8d ff 0f 0b e8 57 72 8d ff 0f 0b e8 50 72 8d ff 0f 0b e8 49 72 8d ff <0f> 0b e8 42 72 8d ff 0f 0b 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc90001617440 EFLAGS: 00010293
RAX: ffffffff81d620b7 RBX: ffff888115c57400 RCX: ffff888116c92780
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90001617710 R08: 0000000000000004 R09: 0000000000000003
R10: fffff520002c2e70 R11: 1ffff920002c2e70 R12: 1ffff11022ebdb00
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000001
FS:  00007f8fe459b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8fe4579f98 CR3: 000000011747c000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400