syzbot

loop3: detected capacity change from 0 to 32768
------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 0 PID: 6441 at fs/buffer.c:1229 __brelse fs/buffer.c:1229 [inline]
WARNING: CPU: 0 PID: 6441 at fs/buffer.c:1229 brelse include/linux/buffer_head.h:324 [inline]
WARNING: CPU: 0 PID: 6441 at fs/buffer.c:1229 bh_lru_install fs/buffer.c:1346 [inline]
WARNING: CPU: 0 PID: 6441 at fs/buffer.c:1229 __find_get_block+0x109d/0x1150 fs/buffer.c:1400
Modules linked in:
CPU: 0 UID: 0 PID: 6441 Comm: syz.3.78 Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__brelse fs/buffer.c:1229 [inline]
RIP: 0010:brelse include/linux/buffer_head.h:324 [inline]
RIP: 0010:bh_lru_install fs/buffer.c:1346 [inline]
RIP: 0010:__find_get_block+0x109d/0x1150 fs/buffer.c:1400
Code: d7 3c 9a e8 05 60 dc ff e9 1b f7 ff ff e8 3b 83 78 ff e9 87 f7 ff ff e8 31 83 78 ff 90 48 c7 c7 e0 f0 18 8c e8 64 26 39 ff 90 <0f> 0b 90 90 e9 6b f7 ff ff e8 15 83 78 ff 48 c7 c7 c0 c8 a8 8e 4c
RSP: 0018:ffffc900055a6980 EFLAGS: 00010246
RAX: 714df13fe52b9000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000c9ca000 RSI: 000000000000992c RDI: 000000000000992d
RBP: ffffc900055a6ab0 R08: ffffffff816019a2 R09: 1ffff110170c519a
R10: dffffc0000000000 R11: ffffed10170c519b R12: ffff88807b734910
R13: ffff8880b86398b0 R14: ffff88805e992910 R15: ffff88805e992a58
FS:  00007fdbd36526c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fabee37088c CR3: 00000000316ec000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bdev_getblk+0x33/0x670 fs/buffer.c:1425
 __getblk include/linux/buffer_head.h:380 [inline]
 sb_getblk include/linux/buffer_head.h:386 [inline]
 ocfs2_read_blocks_sync+0x4c1/0xd10 fs/ocfs2/buffer_head_io.c:109
 ocfs2_read_locked_inode fs/ocfs2/inode.c:503 [inline]
 ocfs2_iget+0xa20/0x2170 fs/ocfs2/inode.c:159
 _ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:142 [inline]
 ocfs2_get_system_file_inode+0x352/0x7b0 fs/ocfs2/sysfile.c:112
 ocfs2_init_local_system_inodes fs/ocfs2/super.c:487 [inline]
 ocfs2_mount_volume+0x309/0x1940 fs/ocfs2/super.c:1811
 ocfs2_fill_super+0x476e/0x5760 fs/ocfs2/super.c:1084
 mount_bdev+0x20a/0x2d0 fs/super.c:1693
 legacy_get_tree+0xee/0x190 fs/fs_context.c:662
 vfs_get_tree+0x90/0x2b0 fs/super.c:1814
 do_new_mount+0x2be/0xb40 fs/namespace.c:3507
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdbd27874ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdbd3651e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fdbd3651ef0 RCX: 00007fdbd27874ca
RDX: 0000000020004440 RSI: 0000000020000040 RDI: 00007fdbd3651eb0
RBP: 0000000020004440 R08: 00007fdbd3651ef0 R09: 00000000000008c0
R10: 00000000000008c0 R11: 0000000000000246 R12: 0000000020000040
R13: 00007fdbd3651eb0 R14: 000000000000442b R15: 0000000020000180
 </TASK>