[ 15.169342][ T232] ================================================================== [ 15.169690][ T232] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 15.170064][ T232] Read of size 8 at addr ffffffffa76d4790 by task restore_ipv4/232 [ 15.170326][ T232] [ 15.170457][ T232] CPU: 2 UID: 0 PID: 232 Comm: restore_ipv4 Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 15.170463][ T232] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.170466][ T232] Call Trace: [ 15.170468][ T232] [ 15.170470][ T232] dump_stack_lvl+0x82/0xc0 [ 15.170478][ T232] print_address_description.constprop.0+0x2c/0x3a0 [ 15.170487][ T232] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 15.170491][ T232] print_report+0xb4/0x270 [ 15.170494][ T232] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 15.170497][ T232] ? kasan_addr_to_slab+0x21/0x70 [ 15.170501][ T232] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 15.170504][ T232] kasan_report+0xca/0x100 [ 15.170508][ T232] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 15.170513][ T232] snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 15.170518][ T232] ? sockstat6_seq_show+0x1d0/0x1d0 [ 15.170529][ T232] ? rcu_is_watching+0x12/0xb0 [ 15.170536][ T232] ? trace_kmalloc+0x26/0xd0 [ 15.170541][ T232] ? __kvmalloc_node_noprof+0x23f/0x570 [ 15.170546][ T232] snmp6_seq_show+0x68/0x190 [ 15.170549][ T232] seq_read_iter+0x3fa/0x1060 [ 15.170560][ T232] seq_read+0x2cc/0x4b0 [ 15.170563][ T232] ? seq_read_iter+0x1060/0x1060 [ 15.170567][ T232] ? __lock_acquire+0x449/0x7e0 [ 15.170576][ T232] ? __mutex_trylock_common+0xf9/0x260 [ 15.170581][ T232] ? rcu_is_watching+0x12/0xb0 [ 15.170585][ T232] proc_reg_read+0x1aa/0x270 [ 15.170593][ T232] vfs_read+0x17e/0xda0 [ 15.170598][ T232] ? fdget_pos+0x230/0x2f0 [ 15.170604][ T232] ? ww_mutex_lock+0x160/0x160 [ 15.170611][ T232] ? kernel_read+0x1f0/0x1f0 [ 15.170615][ T232] ? __lock_release+0x5d/0x170 [ 15.170619][ T232] ? __fget_files+0x199/0x300 [ 15.170623][ T232] ? __fget_files+0x1a3/0x300 [ 15.170629][ T232] ksys_read+0xf7/0x1d0 [ 15.170633][ T232] ? vfs_write+0x12c0/0x12c0 [ 15.170639][ T232] do_syscall_64+0xc1/0x370 [ 15.170644][ T232] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.170649][ T232] RIP: 0033:0x7efd952212cc [ 15.170653][ T232] Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 29 8b f8 ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 7f 8b f8 ff 48 [ 15.170656][ T232] RSP: 002b:00007efd9491d0f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 15.170660][ T232] RAX: ffffffffffffffda RBX: 00007efd88000b60 RCX: 00007efd952212cc [ 15.170662][ T232] RDX: 0000000000000400 RSI: 00007efd88000dc0 RDI: 0000000000000009 [ 15.170664][ T232] RBP: 00007efd953195c0 R08: 0000000000000000 R09: 0000000000000000 [ 15.170666][ T232] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 15.170668][ T232] R13: 0000000000000d68 R14: 00007efd953189c0 R15: 0000000000000d68 [ 15.170674][ T232] [ 15.170676][ T232] [ 15.179952][ T232] The buggy address belongs to the variable: [ 15.180185][ T232] snmp6_ipstats_list+0x210/0x3e0 [ 15.180384][ T232] [ 15.180503][ T232] The buggy address belongs to the physical page: [ 15.180735][ T232] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1f8d4 [ 15.181052][ T232] flags: 0x80000000002000(reserved|node=0|zone=1) [ 15.181293][ T232] raw: 0080000000002000 ffffea00007e3508 ffffea00007e3508 0000000000000000 [ 15.181629][ T232] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 15.181961][ T232] page dumped because: kasan: bad access detected [ 15.182214][ T232] [ 15.182323][ T232] Memory state around the buggy address: [ 15.182524][ T232] ffffffffa76d4680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.182799][ T232] ffffffffa76d4700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.183080][ T232] >ffffffffa76d4780: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 00 01 f9 f9 [ 15.183388][ T232] ^ [ 15.183579][ T232] ffffffffa76d4800: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 00 01 [ 15.183822][ T232] ffffffffa76d4880: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 00 06 f9 [ 15.184120][ T232] ================================================================== [ 15.184680][ T232] Disabling lock debugging due to kernel taint