VFS: Found a Xenix FS (block size = 1024) on device loop0
Bad inode number on dev loop0: 2 is out of range
SysV FS: get root inode failed
------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 4118 at fs/buffer.c:1148 __brelse+0x8c/0xec fs/buffer.c:1148
Modules linked in:
CPU: 1 PID: 4118 Comm: syz.0.1 Not tainted 5.15.168-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __brelse+0x8c/0xec fs/buffer.c:1148
lr : __brelse+0x8c/0xec fs/buffer.c:1148
sp : ffff800020707900
x29: ffff800020707900 x28: ffff800011e72ac0 x27: 0000000000000000
x26: ffff0000dd842ae0 x25: ffff0000dd842ae0 x24: 0000000000000002
x23: ffff0000dcfb2160 x22: ffff0000d178a040 x21: 0000000000000000
x20: 0000000000000000 x19: ffff0000dd842b40 x18: 0000000000000003
x17: 0000000040000002 x16: ffff800011abbac4 x15: 0000000000000004
x14: 1ffff0000295606a x13: dfff800000000000 x12: 0000000000040000
x11: 00000000000177e3 x10: ffff800020b3a000 x9 : 7b006057ffcb7f00
x8 : 7b006057ffcb7f00 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff800008555dd4
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000027
Call trace:
 __brelse+0x8c/0xec fs/buffer.c:1148
 brelse include/linux/buffer_head.h:325 [inline]
 sysv_fill_super+0x510/0x5f8 fs/sysv/super.c:415
 mount_bdev+0x274/0x370 fs/super.c:1400
 sysv_mount+0x44/0x58 fs/sysv/super.c:534
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611
 vfs_get_tree+0x90/0x274 fs/super.c:1530
 do_new_mount+0x278/0x8fc fs/namespace.c:3012
 path_mount+0x594/0x101c fs/namespace.c:3342
 do_mount fs/namespace.c:3355 [inline]
 __do_sys_mount fs/namespace.c:3563 [inline]
 __se_sys_mount fs/namespace.c:3540 [inline]
 __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3540
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 2288
hardirqs last  enabled at (2287): [<ffff80000826ac68>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1338 [inline]
hardirqs last  enabled at (2287): [<ffff80000826ac68>] finish_lock_switch+0xbc/0x1e8 kernel/sched/core.c:4781
hardirqs last disabled at (2288): [<ffff800011ab7150>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (2270): [<ffff8000081b691c>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (2270): [<ffff8000081b691c>] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586
softirqs last disabled at (2197): [<ffff8000081b6fb4>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (2197): [<ffff8000081b6fb4>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (2197): [<ffff8000081b6fb4>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (2197): [<ffff8000081b6fb4>] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641
---[ end trace 1b6e4d43579a6dc0 ]---
oldfs: cannot read superblock