squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on loop1 squashfs: SQUASHFS error: Page size > filesystem block size (4). This is currently not supported! ================================================================== squashfs: SQUASHFS error: unable to read inode lookup table BUG: KASAN: slab-out-of-bounds in squashfs_get_id+0x1ae/0x1d0 fs/squashfs/id.c:51 Read of size 8 at addr ffff888098cacba0 by task syz-executor.0/5071 CPU: 0 PID: 5071 Comm: syz-executor.0 Not tainted 4.19.153-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2fe lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1c7 mm/kasan/report.c:354 kasan_report mm/kasan/report.c:412 [inline] __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433 squashfs_get_id+0x1ae/0x1d0 fs/squashfs/id.c:51 squashfs_new_inode fs/squashfs/inode.c:64 [inline] squashfs_read_inode+0x1b4/0x1b40 fs/squashfs/inode.c:133 squashfs_fill_super+0x1655/0x1c00 fs/squashfs/super.c:318 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x30c fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x113c/0x2f10 fs/namespace.c:2799 ksys_mount+0xcf/0x130 fs/namespace.c:3015 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3026 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x46090a Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007fe5387a5a88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fe5387a5b20 RCX: 000000000046090a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fe5387a5ae0 RBP: 00007fe5387a5ae0 R08: 00007fe5387a5b20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020000040 Allocated by task 26139: __do_kmalloc mm/slab.c:3727 [inline] __kmalloc_track_caller+0x155/0x3c0 mm/slab.c:3742 kstrdup+0x36/0x70 mm/util.c:56 kstrdup_const+0x53/0x80 mm/util.c:77 __kernfs_new_node+0x9b/0x680 fs/kernfs/dir.c:629 kernfs_new_node fs/kernfs/dir.c:693 [inline] kernfs_create_dir_ns+0x9e/0x230 fs/kernfs/dir.c:1019 sysfs_create_dir_ns+0x127/0x280 fs/sysfs/dir.c:58 create_dir lib/kobject.c:88 [inline] kobject_add_internal+0x2a5/0x9c0 lib/kobject.c:247 kobject_add_varg lib/kobject.c:382 [inline] kobject_init_and_add+0x101/0x160 lib/kobject.c:453 netdev_queue_add_kobject net/core/net-sysfs.c:1481 [inline] netdev_queue_update_kobjects+0x128/0x3c0 net/core/net-sysfs.c:1509 register_queue_kobjects net/core/net-sysfs.c:1551 [inline] netdev_register_kobject+0x35e/0x430 net/core/net-sysfs.c:1769 register_netdevice+0xb46/0x10f0 net/core/dev.c:8717 ipip6_tunnel_create+0x2a3/0x480 net/ipv6/sit.c:212 ipip6_newlink+0x138/0x350 net/ipv6/sit.c:1588 rtnl_newlink+0x1027/0x15b0 net/core/rtnetlink.c:3141 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4778 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 8144: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 security_sk_free+0x3e/0x70 security/security.c:1474 sk_prot_free net/core/sock.c:1499 [inline] __sk_destruct+0x51d/0x8a0 net/core/sock.c:1584 sk_destruct net/core/sock.c:1599 [inline] __sk_free+0x165/0x3b0 net/core/sock.c:1610 sk_free+0x3b/0x50 net/core/sock.c:1621 sock_put include/net/sock.h:1711 [inline] tcp_close+0xb23/0xfd0 net/ipv4/tcp.c:2504 inet_release+0xd7/0x1e0 net/ipv4/af_inet.c:427 __sock_release+0xcd/0x2a0 net/socket.c:579 sock_close+0x15/0x20 net/socket.c:1140 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff888098cacb80 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 0 bytes to the right of 32-byte region [ffff888098cacb80, ffff888098cacba0) The buggy address belongs to the page: page:ffffea0002632b00 count:1 mapcount:0 mapping:ffff88813bff01c0 index:0xffff888098cacfc1 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffffea0002ca9888 ffffea0002bda848 ffff88813bff01c0 raw: ffff888098cacfc1 ffff888098cac000 000000010000003f 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888098caca80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff888098cacb00: fb fb fb fb fc fc fc fc 00 fc fc fc fc fc fc fc >ffff888098cacb80: 05 fc fc fc fc fc fc fc 05 fc fc fc fc fc fc fc ^ ffff888098cacc00: 00 00 00 00 fc fc fc fc fb fb fb fb fc fc fc fc ffff888098cacc80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================