loop0: detected capacity change from 0 to 128
VFS: Found a Xenix FS (block size = 512) on device loop0
loop0: detected capacity change from 128 to 0
sysv_free_block: trying to free block not in datazone
syz.0.0: attempt to access beyond end of device
loop0: rw=0, sector=13662976, nr_sectors = 1 limit=0
syz.0.0: attempt to access beyond end of device
loop0: rw=0, sector=8073605, nr_sectors = 1 limit=0
syz.0.0: attempt to access beyond end of device
loop0: rw=0, sector=3245521, nr_sectors = 1 limit=0
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
syz.0.0: attempt to access beyond end of device
loop0: rw=2049, sector=209285, nr_sectors = 1 limit=0
Buffer I/O error on dev loop0, logical block 209285, lost sync page write
syz.0.0: attempt to access beyond end of device
loop0: rw=2049, sector=13466417, nr_sectors = 1 limit=0
Buffer I/O error on dev loop0, logical block 13466417, lost sync page write
syz.0.0: attempt to access beyond end of device
loop0: rw=2049, sector=2, nr_sectors = 1 limit=0
Buffer I/O error on dev loop0, logical block 2, lost sync page write
IO error syncing sysv inode [loop0:00000002]
syz.0.0: attempt to access beyond end of device
loop0: rw=2049, sector=8768635, nr_sectors = 1 limit=0
syz.0.0: attempt to access beyond end of device
loop0: rw=0, sector=209285, nr_sectors = 1 limit=0
syz.0.0: attempt to access beyond end of device
loop0: rw=0, sector=2, nr_sectors = 1 limit=0
unable to read i-node block
sysv_free_inode: inode 0,1,2 or nonexistent inode
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5318 at fs/buffer.c:1173 mark_buffer_dirty+0x2c6/0x440 fs/buffer.c:1173
Modules linked in:
CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Not tainted 6.13.0-rc3-syzkaller-00044-gaef25be35d23 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:mark_buffer_dirty+0x2c6/0x440 fs/buffer.c:1173
Code: 4c 89 f7 e8 7c 54 dc ff 49 8b 3e be 20 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 97 de fb ff e8 b2 eb 75 ff eb 8b e8 ab eb 75 ff 90 <0f> 0b 90 e9 82 fd ff ff e8 9d eb 75 ff 90 0f 0b 90 e9 a9 fd ff ff
RSP: 0018:ffffc9000d3478a0 EFLAGS: 00010293
RAX: ffffffff82298845 RBX: 1ffff110086ffd01 RCX: ffff88801cce2440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff822985c3 R09: 1ffff110085fbeae
R10: dffffc0000000000 R11: ffffed10085fbeaf R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888042fdf570 R15: ffff8880437fec38
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020010000 CR3: 0000000011bfa000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 sysv_put_super+0x93/0x180 fs/sysv/inode.c:76
 generic_shutdown_super+0x139/0x2d0 fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1710
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
 task_work_run+0x24f/0x310 kernel/task_work.c:239
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0xa2f/0x28e0 kernel/exit.c:938
 do_group_exit+0x207/0x2c0 kernel/exit.c:1087
 get_signal+0x16b2/0x1750 kernel/signal.c:3017
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb910385d29
Code: Unable to access opcode bytes at 0x7fb910385cff.
RSP: 002b:00007fb9111590e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fb910575fa8 RCX: 00007fb910385d29
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fb910575fac
RBP: 00007fb910575fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb910575fac
R13: 0000000000000000 R14: 00007ffe88e58880 R15: 00007ffe88e58968
 </TASK>