SQUASHFS error: squashfs_read_data failed to read block 0xf2 SQUASHFS error: Unable to read metadata cache entry [f2] SQUASHFS error: Unable to read inode 0x63004f Enabling of bearer rejected, already enabled ================================================================== BUG: KASAN: slab-out-of-bounds in squashfs_get_id+0x1ae/0x1d0 fs/squashfs/id.c:51 Read of size 8 at addr ffff8880b4f06cb8 by task syz-executor.3/18236 Enabling of bearer rejected, already enabled CPU: 1 PID: 18236 Comm: syz-executor.3 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:00007ff649f43a88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ff649f43b20 RCX: 000000000046090a RDX: 0000000020000040 RSI: 0000000020000100 RDI: 00007ff649f43ae0 RBP: 00007ff649f43ae0 R08: 00007ff649f43b20 R09: 0000000020000040 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000040 R13: 0000000020000100 R14: 0000000020000200 R15: 00000000200003c0 Allocated by task 27355: __do_kmalloc mm/slab.c:3727 [inline] __kmalloc+0x15a/0x3c0 mm/slab.c:3736 kmalloc_array include/linux/slab.h:637 [inline] kcalloc include/linux/slab.h:648 [inline] icmpv6_sk_init+0xac/0x2a0 net/ipv6/icmp.c:960 ops_init+0xb3/0x410 net/core/net_namespace.c:129 setup_net+0x2c2/0x720 net/core/net_namespace.c:315 Enabling of bearer rejected, already enabled copy_net_ns+0x1f7/0x335 net/core/net_namespace.c:438 create_new_namespaces+0x3f6/0x7b0 kernel/nsproxy.c:107 copy_namespaces+0x325/0x3c0 kernel/nsproxy.c:165 copy_process.part.0+0x3e13/0x8200 kernel/fork.c:1919 copy_process kernel/fork.c:1713 [inline] _do_fork+0x22f/0xf30 kernel/fork.c:2228 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 9430: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 aa_free_task_ctx security/apparmor/include/task.h:61 [inline] apparmor_task_free+0x143/0x1e0 security/apparmor/lsm.c:93 security_task_free+0x3e/0x70 security/security.c:992 __put_task_struct+0xea/0x340 kernel/fork.c:688 put_task_struct include/linux/sched/task.h:98 [inline] delayed_put_task_struct+0x1dc/0x320 kernel/exit.c:181 __rcu_reclaim kernel/rcu/rcu.h:236 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0x8ff/0x18b0 kernel/rcu/tree.c:2881 __do_softirq+0x26c/0x9a0 kernel/softirq.c:292 The buggy address belongs to the object at ffff8880b4f06c80 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 24 bytes to the right of 32-byte region [ffff8880b4f06c80, ffff8880b4f06ca0) The buggy address belongs to the page: page:ffffea0002d3c180 count:1 mapcount:0 mapping:ffff88813bff01c0 index:0xffff8880b4f06fc1 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffffea000271ac88 ffffea0002c36b08 ffff88813bff01c0 raw: ffff8880b4f06fc1 ffff8880b4f06000 000000010000002f 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880b4f06b80: fb fb fb fb fc fc fc fc 00 fc fc fc fc fc fc fc ffff8880b4f06c00: fb fb fb fb fc fc fc fc 00 00 fc fc fc fc fc fc >ffff8880b4f06c80: 00 00 fc fc fc fc fc fc fb fb fb fb fc fc fc fc ^ ffff8880b4f06d00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8880b4f06d80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================