attempt to access beyond end of device
loop4: rw=0, want=6491538, limit=128
Buffer I/O error on dev loop4, logical block 3245768, async page read
==================================================================
BUG: KASAN: use-after-free in sysv_new_inode+0xd74/0xeec fs/sysv/ialloc.c:153
Read of size 2 at addr ffff0000e9ad91ce by task syz.4.1900/9402

CPU: 1 PID: 9402 Comm: syz.4.1900 Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x174/0x1e4 mm/kasan/report.c:451
 __asan_report_load2_noabort+0x44/0x50 mm/kasan/report_generic.c:307
 sysv_new_inode+0xd74/0xeec fs/sysv/ialloc.c:153
 sysv_mknod+0x5c/0x100 fs/sysv/namei.c:53
 vfs_mknod+0x3c8/0x448 fs/namei.c:3944
 unix_bind_bsd net/unix/af_unix.c:1076 [inline]
 unix_bind+0x428/0x7f4 net/unix/af_unix.c:1164
 __sys_bind+0x1e8/0x284 net/socket.c:1720
 __do_sys_bind net/socket.c:1731 [inline]
 __se_sys_bind net/socket.c:1729 [inline]
 __arm64_sys_bind+0x7c/0x94 net/socket.c:1729
 __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

The buggy address belongs to the page:
page:000000008d4a7962 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x129ad9
flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000000000 fffffc0003a6b688 fffffc0003a6b608 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000e9ad9080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff0000e9ad9100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff0000e9ad9180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                              ^
 ffff0000e9ad9200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff0000e9ad9280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
attempt to access beyond end of device
loop4: rw=0, want=6491538, limit=128
Buffer I/O error on dev loop4, logical block 3245768, async page read