loop7: detected capacity change from 0 to 32768
ocfs2: Slot 0 on device (7,7) was already allocated to this node!
------------[ cut here ]------------
kernel BUG at fs/ocfs2/buffer_head_io.c:45!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 UID: 0 PID: 7650 Comm: syz.7.158 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ocfs2_write_block+0x61c/0x744 fs/ocfs2/buffer_head_io.c:45
lr : ocfs2_write_block+0x61c/0x744 fs/ocfs2/buffer_head_io.c:45
sp : ffff80009e9b6980
x29: ffff80009e9b6a20 x28: 1fffe0001cc05f25 x27: ffff80009e9b69a0
x26: dfff800000000000 x25: ffff700013d36d34 x24: ffff80008f81d5c0
x23: 0000000000000001 x22: 0000000000000000 x21: ffff0000da0fc000
x20: ffff0000e602f910 x19: ffff0001009f0830 x18: 1fffe000366c6876
x17: ffff80008f81d000 x16: ffff8000830d1d70 x15: 0000000000000001
x14: 1fffe0001b41f820 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000040000 x10: 00000000000104fa x9 : ffff80009e9b9000
x8 : 00000000000104fb x7 : ffff8000820f011c x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80008036f2b8
x2 : ffff0001009f0830 x1 : 0000000000000000 x0 : 0000000000000002
Call trace:
 ocfs2_write_block+0x61c/0x744 fs/ocfs2/buffer_head_io.c:45 (P)
 ocfs2_write_block+0x61c/0x744 fs/ocfs2/buffer_head_io.c:45 (L)
 ocfs2_update_disk_slot+0x3e8/0x5ec fs/ocfs2/slot_map.c:197
 ocfs2_find_slot+0x448/0x9fc fs/ocfs2/slot_map.c:482
 ocfs2_mount_volume+0x170/0x1508 fs/ocfs2/super.c:1804
 ocfs2_fill_super+0x39d8/0x48e8 fs/ocfs2/super.c:1084
 mount_bdev+0x1d4/0x2a0 fs/super.c:1693
 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1188
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:662
 vfs_get_tree+0x90/0x28c fs/super.c:1814
 do_new_mount+0x278/0x900 fs/namespace.c:3507
 path_mount+0x590/0xe04 fs/namespace.c:3834
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount fs/namespace.c:4034 [inline]
 __arm64_sys_mount+0x4d4/0x5ac fs/namespace.c:4034
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: b40005f7 97959700 17fffea9 979596fe (d4210000) 
---[ end trace 0000000000000000 ]---