loop0: detected capacity change from 0 to 64
------------[ cut here ]------------
kernel BUG at fs/buffer.c:1579!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:folio_set_bh+0x1dc/0x1e0 fs/buffer.c:1579
Code: 4c 89 e2 e8 76 12 95 02 e9 42 ff ff ff e8 dc 18 6e ff 48 89 df 48 c7 c6 a0 e3 de 8b e8 7d 84 d0 fe 90 0f 0b e8 c5 18 6e ff 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f
RSP: 0018:ffffc9000dc0f938 EFLAGS: 00010293
RAX: ffffffff8257948b RBX: ffffea0001567080 RCX: ffff888000e28000
RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000000001000
RBP: dffffc0000000000 R08: ffffea0001567087 R09: 1ffffd40002ace10
R10: dffffc0000000000 R11: fffff940002ace11 R12: 0000000000000000
R13: 0000000000001000 R14: ffff8880475919f8 R15: 0000000000001000
FS:  00007f7446c056c0(0000) GS:ffff88808ca57000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffacbf1f00 CR3: 0000000042cec000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 folio_alloc_buffers+0x39f/0x640 fs/buffer.c:943
 grow_dev_folio fs/buffer.c:1072 [inline]
 grow_buffers fs/buffer.c:1113 [inline]
 __getblk_slow fs/buffer.c:1131 [inline]
 bdev_getblk+0x2cb/0x6e0 fs/buffer.c:1458
 __bread_gfp+0x89/0x3b0 fs/buffer.c:1512
 sb_bread include/linux/buffer_head.h:346 [inline]
 bfs_fill_super+0x1a2/0xeb0 fs/bfs/inode.c:347
 get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694
 vfs_get_tree+0x92/0x2a0 fs/super.c:1754
 fc_mount fs/namespace.c:1193 [inline]
 do_new_mount_fc fs/namespace.c:3763 [inline]
 do_new_mount+0x341/0xd30 fs/namespace.c:3839
 do_mount fs/namespace.c:4172 [inline]
 __do_sys_mount fs/namespace.c:4361 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4338
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7445d9da0a
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:00007f7446c04e18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7446c04ea0 RCX: 00007f7445d9da0a
RDX: 0000200000000280 RSI: 0000200000000240 RDI: 00007f7446c04e60
RBP: 0000200000000280 R08: 00007f7446c04ea0 R09: 0000000000808008
R10: 0000000000808008 R11: 0000000000000246 R12: 0000200000000240
R13: 00007f7446c04e60 R14: 00000000000000aa R15: 0000200000000200
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_set_bh+0x1dc/0x1e0 fs/buffer.c:1579
Code: 4c 89 e2 e8 76 12 95 02 e9 42 ff ff ff e8 dc 18 6e ff 48 89 df 48 c7 c6 a0 e3 de 8b e8 7d 84 d0 fe 90 0f 0b e8 c5 18 6e ff 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f
RSP: 0018:ffffc9000dc0f938 EFLAGS: 00010293
RAX: ffffffff8257948b RBX: ffffea0001567080 RCX: ffff888000e28000
RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000000001000
RBP: dffffc0000000000 R08: ffffea0001567087 R09: 1ffffd40002ace10
R10: dffffc0000000000 R11: fffff940002ace11 R12: 0000000000000000
R13: 0000000000001000 R14: ffff8880475919f8 R15: 0000000000001000
FS:  00007f7446c056c0(0000) GS:ffff88808ca57000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0074815d50 CR3: 0000000042cec000 CR4: 0000000000352ef0