oldfs: cannot read superblock
------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 1998 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline]
WARNING: CPU: 1 PID: 1998 at fs/buffer.c:1145 __brelse fs/buffer.c:1139 [inline]
WARNING: CPU: 1 PID: 1998 at fs/buffer.c:1145 brelse include/linux/buffer_head.h:290 [inline]
WARNING: CPU: 1 PID: 1998 at fs/buffer.c:1145 __invalidate_bh_lrus fs/buffer.c:1391 [inline]
WARNING: CPU: 1 PID: 1998 at fs/buffer.c:1145 invalidate_bh_lru+0x5e/0x90 fs/buffer.c:1404
Modules linked in:
CPU: 1 PID: 1998 Comm: syz-executor.0 Not tainted 5.18.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0010:__brelse fs/buffer.c:1145 [inline]
RIP: 0010:__brelse fs/buffer.c:1139 [inline]
RIP: 0010:brelse include/linux/buffer_head.h:290 [inline]
RIP: 0010:__invalidate_bh_lrus fs/buffer.c:1391 [inline]
RIP: 0010:invalidate_bh_lru+0x5e/0x90 fs/buffer.c:1404
Code: c7 03 00 00 00 00 48 83 c3 08 48 39 eb 74 2d 48 8b 03 48 85 c0 74 e8 8b 50 60 85 d2 75 dd 48 c7 c7 00 35 e4 82 e8 69 7f fa 00 <0f> 0b 48 c7 03 00 00 00 00 48 83 c3 08 48 39 eb 75 d3 bf 01 00 00
RSP: 0018:ffffc90001c2fbf8 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffff88813bd29600 RCX: 0000000000000000
RDX: 0000000000000003 RSI: ffffffff82d89710 RDI: 00000000ffffffff
RBP: ffff88813bd29680 R08: 0000000000000000 R09: ffffffff83294160
R10: ffffc90001c2fa18 R11: ffffffff833741a8 R12: 0000000000000202
R13: ffffffff812e1210 R14: 0000000000000001 R15: 0000000000000000
FS:  00007f02d22856c0(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560657bd0128 CR3: 0000000107fd7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 smp_call_function_many_cond+0x159/0x5b0 kernel/smp.c:960
 on_each_cpu_cond_mask+0x3b/0x70 kernel/smp.c:1135
 invalidate_bdev+0x1e/0x40 block/bdev.c:86
 invalidate_disk+0x18/0x60 block/genhd.c:676
 __loop_clr_fd+0x235/0x3b0 drivers/block/loop.c:1147
 loop_clr_fd drivers/block/loop.c:1230 [inline]
 lo_ioctl+0x201/0x840 drivers/block/loop.c:1556
 blkdev_ioctl+0x131/0x270 block/ioctl.c:588
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x84/0xc0 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f02d147c88b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f02d2284e90 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 00007f02d147c88b
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004
RBP: 0000000000000016 R08: 00007f02d2284f80 R09: 0000000000008003
R10: 0000000000008003 R11: 0000000000000246 R12: 0000000000000004
R13: 00007f02d2284f40 R14: 0000000000009dfc R15: 0000000020000000
 </TASK>