================================================================== SQUASHFS error: squashfs_read_data failed to read block 0x810081 BUG: KASAN: slab-out-of-bounds in squashfs_get_id+0x1ae/0x1d0 fs/squashfs/id.c:51 Read of size 8 at addr ffff8880aab473e8 by task syz-executor.3/31204 SQUASHFS error: Unable to read metadata cache entry [810081] CPU: 0 PID: 31204 Comm: syz-executor.3 Not tainted 4.19.167-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 error: Unable to read inode 0x810000011a 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: SQUASHFS error: Major/Minor mismatch, trying to mount newer 4.5376 filesystem 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 squashfs: SQUASHFS error: Please update your kernel 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 squashfs: SQUASHFS error: Major/Minor mismatch, trying to mount newer 4.2564 filesystem entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x460c6a 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:00007f24f3884a78 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f24f3884b10 RCX: 0000000000460c6a RDX: 0000000020000000 RSI: 0000000020000300 RDI: 00007f24f3884ad0 RBP: 00007f24f3884ad0 R08: 00007f24f3884b10 R09: 0000000020000000 squashfs: SQUASHFS error: Please update your kernel R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000300 R14: 0000000020000200 R15: 0000000020010200 Allocated by task 11031: __do_kmalloc_node mm/slab.c:3689 [inline] __kmalloc_node+0x4c/0x70 mm/slab.c:3696 kmalloc_node include/linux/slab.h:557 [inline] __vmalloc_area_node+0x15f/0x780 mm/vmalloc.c:1677 __vmalloc_node_range mm/vmalloc.c:1753 [inline] __vmalloc_node mm/vmalloc.c:1804 [inline] __vmalloc_node_flags mm/vmalloc.c:1818 [inline] vzalloc+0x10a/0x1a0 mm/vmalloc.c:1857 alloc_counters net/ipv6/netfilter/ip6_tables.c:819 [inline] copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:841 [inline] get_entries net/ipv6/netfilter/ip6_tables.c:1044 [inline] do_ip6t_get_ctl+0x4e9/0x910 net/ipv6/netfilter/ip6_tables.c:1712 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:122 squashfs: SQUASHFS error: Major/Minor mismatch, trying to mount newer 3332.0 filesystem ipv6_getsockopt+0x1b6/0x260 net/ipv6/ipv6_sockglue.c:1388 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:3618 __sys_getsockopt+0x135/0x210 net/socket.c:1938 __do_sys_getsockopt net/socket.c:1949 [inline] __se_sys_getsockopt net/socket.c:1946 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:1946 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 11031: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 kvfree+0x59/0x60 mm/util.c:452 __vunmap+0x2a5/0x3f0 mm/vmalloc.c:1534 vfree+0x65/0x100 mm/vmalloc.c:1598 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:886 [inline] get_entries net/ipv6/netfilter/ip6_tables.c:1044 [inline] do_ip6t_get_ctl+0x713/0x910 net/ipv6/netfilter/ip6_tables.c:1712 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:122 ipv6_getsockopt+0x1b6/0x260 net/ipv6/ipv6_sockglue.c:1388 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:3618 squashfs: SQUASHFS error: Please update your kernel __sys_getsockopt+0x135/0x210 net/socket.c:1938 __do_sys_getsockopt net/socket.c:1949 [inline] __se_sys_getsockopt net/socket.c:1946 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:1946 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8880aab473c0 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 8 bytes to the right of 32-byte region [ffff8880aab473c0, ffff8880aab473e0) The buggy address belongs to the page: page:ffffea0002aad1c0 count:1 mapcount:0 mapping:ffff88813bff01c0 index:0xffff8880aab47fc1 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffffea0002cf48c8 ffffea00026f1308 ffff88813bff01c0 raw: ffff8880aab47fc1 ffff8880aab47000 0000000100000029 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880aab47280: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8880aab47300: fb fb fb fb fc fc fc fc 00 fc fc fc fc fc fc fc >ffff8880aab47380: 00 00 00 00 fc fc fc fc fb fb fb fb fc fc fc fc ^ ffff8880aab47400: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8880aab47480: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================