[ 14.293301][ T226] ================================================================== [ 14.293671][ T226] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.293987][ T226] Read of size 8 at addr ffffffffacad4790 by task self-connect_ip/226 [ 14.294294][ T226] [ 14.294397][ T226] CPU: 0 UID: 0 PID: 226 Comm: self-connect_ip Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 14.294402][ T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.294405][ T226] Call Trace: [ 14.294407][ T226] [ 14.294409][ T226] dump_stack_lvl+0x82/0xc0 [ 14.294418][ T226] print_address_description.constprop.0+0x2c/0x3a0 [ 14.294427][ T226] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.294432][ T226] print_report+0xb4/0x270 [ 14.294436][ T226] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.294438][ T226] ? kasan_addr_to_slab+0x21/0x70 [ 14.294442][ T226] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.294445][ T226] kasan_report+0xca/0x100 [ 14.294449][ T226] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.294454][ T226] snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.294459][ T226] ? sockstat6_seq_show+0x1d0/0x1d0 [ 14.294471][ T226] ? rcu_is_watching+0x12/0xb0 [ 14.294478][ T226] ? trace_kmalloc+0x26/0xd0 [ 14.294483][ T226] ? __kvmalloc_node_noprof+0x23f/0x570 [ 14.294488][ T226] snmp6_seq_show+0x68/0x190 [ 14.294491][ T226] seq_read_iter+0x3fa/0x1060 [ 14.294501][ T226] seq_read+0x2cc/0x4b0 [ 14.294505][ T226] ? seq_read_iter+0x1060/0x1060 [ 14.294509][ T226] ? __lock_acquire+0x449/0x7e0 [ 14.294518][ T226] ? __mutex_trylock_common+0xf9/0x260 [ 14.294523][ T226] ? rcu_is_watching+0x12/0xb0 [ 14.294528][ T226] proc_reg_read+0x1aa/0x270 [ 14.294534][ T226] vfs_read+0x17e/0xda0 [ 14.294538][ T226] ? fdget_pos+0x230/0x2f0 [ 14.294543][ T226] ? ww_mutex_lock+0x160/0x160 [ 14.294551][ T226] ? kernel_read+0x1f0/0x1f0 [ 14.294554][ T226] ? __lock_release+0x5d/0x170 [ 14.294560][ T226] ? __fget_files+0x199/0x300 [ 14.294566][ T226] ? __fget_files+0x1a3/0x300 [ 14.294576][ T226] ksys_read+0xf7/0x1d0 [ 14.294582][ T226] ? vfs_write+0x12c0/0x12c0 [ 14.294593][ T226] do_syscall_64+0xc1/0x370 [ 14.294601][ T226] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.294606][ T226] RIP: 0033:0x7f9e466772cc [ 14.294612][ T226] 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 [ 14.294617][ T226] RSP: 002b:00007ffc50c39a10 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 14.294624][ T226] RAX: ffffffffffffffda RBX: 000000000fb0b8a0 RCX: 00007f9e466772cc [ 14.294627][ T226] RDX: 0000000000000400 RSI: 000000000fb0bbc0 RDI: 000000000000000a [ 14.294630][ T226] RBP: 00007f9e4676f5c0 R08: 0000000000000000 R09: 0000000000000001 [ 14.294633][ T226] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 14.294636][ T226] R13: 0000000000000d68 R14: 00007f9e4676e9c0 R15: 0000000000000d68 [ 14.294646][ T226] [ 14.294648][ T226] [ 14.304741][ T226] The buggy address belongs to the variable: [ 14.304988][ T226] snmp6_ipstats_list+0x210/0x3e0 [ 14.305271][ T226] [ 14.305361][ T226] The buggy address belongs to the physical page: [ 14.305568][ T226] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c2d4 [ 14.305904][ T226] flags: 0x80000000002000(reserved|node=0|zone=1) [ 14.306136][ T226] raw: 0080000000002000 ffffea000070b508 ffffea000070b508 0000000000000000 [ 14.306509][ T226] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 14.306937][ T226] page dumped because: kasan: bad access detected [ 14.307185][ T226] [ 14.307318][ T226] Memory state around the buggy address: [ 14.307509][ T226] ffffffffacad4680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 14.307791][ T226] ffffffffacad4700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 14.308105][ T226] >ffffffffacad4780: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 00 01 f9 f9 [ 14.308367][ T226] ^ [ 14.308534][ T226] ffffffffacad4800: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 00 01 [ 14.308820][ T226] ffffffffacad4880: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 00 06 f9 [ 14.309090][ T226] ================================================================== [ 14.309383][ T226] Disabling lock debugging due to kernel taint