loop5: detected capacity change from 0 to 128
VFS: Found a Xenix FS (block size = 1024) on device loop5
Bad inode number on dev loop5: 2 is out of range
SysV FS: get root inode failed
------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 6104 at fs/buffer.c:1235 __brelse fs/buffer.c:1235 [inline]
WARNING: CPU: 1 PID: 6104 at fs/buffer.c:1235 __brelse+0x6d/0xb0 fs/buffer.c:1229
Modules linked in:
CPU: 1 UID: 0 PID: 6104 Comm: syz.5.56 Not tainted 6.12.0-rc7-syzkaller-00212-g4a5df3796467 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:__brelse fs/buffer.c:1235 [inline]
RIP: 0010:__brelse+0x6d/0xb0 fs/buffer.c:1229
Code: 84 d2 75 52 44 8b 63 60 31 ff 44 89 e6 e8 8b eb 7a ff 45 85 e4 75 20 e8 41 e9 7a ff 90 48 c7 c7 e0 e9 7e 8b e8 c4 db 3b ff 90 <0f> 0b 90 90 5b 5d 41 5c e9 26 e9 7a ff e8 21 e9 7a ff be 04 00 00
RSP: 0018:ffffc90004547c00 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff88805b46ebc8 RCX: ffffc9000ba13000
RDX: 0000000000040000 RSI: ffffffff814e6e86 RDI: 0000000000000001
RBP: ffff88805b46ec28 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f2732ae66c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd59b15ff8 CR3: 000000003126c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 brelse include/linux/buffer_head.h:324 [inline]
 sysv_fill_super+0x5b7/0x890 fs/sysv/super.c:417
 mount_bdev+0x1e6/0x2d0 fs/super.c:1693
 legacy_get_tree+0x10c/0x220 fs/fs_context.c:662
 vfs_get_tree+0x92/0x380 fs/super.c:1814
 do_new_mount fs/namespace.c:3507 [inline]
 path_mount+0x14e6/0x1f20 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]
 __x64_sys_mount+0x294/0x320 fs/namespace.c:4034
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2731d7feba
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:00007f2732ae5e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f2732ae5ef0 RCX: 00007f2731d7feba
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f2732ae5eb0
RBP: 0000000020000000 R08: 00007f2732ae5ef0 R09: 0000000002000412
R10: 0000000002000412 R11: 0000000000000246 R12: 0000000020000100
R13: 00007f2732ae5eb0 R14: 0000000000009eb9 R15: 0000000020000140
 </TASK>