[ 403.891067][ T3670] ================================================================== [ 403.891364][ T3670] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 403.891665][ T3670] Read of size 8 at addr ffffffff878e84b0 by task nstat/3670 [ 403.891917][ T3670] [ 403.892022][ T3670] CPU: 1 UID: 0 PID: 3670 Comm: nstat Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 403.892027][ T3670] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 403.892030][ T3670] Call Trace: [ 403.892032][ T3670] [ 403.892034][ T3670] dump_stack_lvl+0x82/0xc0 [ 403.892043][ T3670] print_address_description.constprop.0+0x2c/0x3a0 [ 403.892051][ T3670] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 403.892055][ T3670] print_report+0xb4/0x270 [ 403.892058][ T3670] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 403.892060][ T3670] ? kasan_addr_to_slab+0x21/0x70 [ 403.892064][ T3670] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 403.892067][ T3670] kasan_report+0xca/0x100 [ 403.892071][ T3670] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 403.892076][ T3670] snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 403.892081][ T3670] ? sockstat6_seq_show+0x1d0/0x1d0 [ 403.892091][ T3670] ? rcu_is_watching+0x12/0xb0 [ 403.892099][ T3670] ? trace_kmalloc+0x26/0xd0 [ 403.892105][ T3670] ? __kvmalloc_node_noprof+0x23f/0x570 [ 403.892110][ T3670] snmp6_seq_show+0x68/0x190 [ 403.892113][ T3670] seq_read_iter+0x3fa/0x1060 [ 403.892122][ T3670] seq_read+0x2cc/0x4b0 [ 403.892125][ T3670] ? seq_read_iter+0x1060/0x1060 [ 403.892129][ T3670] ? __might_fault+0x117/0x170 [ 403.892134][ T3670] ? __lock_release+0x5d/0x170 [ 403.892140][ T3670] ? __might_fault+0x117/0x170 [ 403.892145][ T3670] ? cp_old_stat+0x6c0/0x6c0 [ 403.892151][ T3670] proc_reg_read+0x1aa/0x270 [ 403.892158][ T3670] vfs_read+0x17e/0xda0 [ 403.892163][ T3670] ? vfs_getattr_nosec+0x2b5/0x3e0 [ 403.892166][ T3670] ? kernel_read+0x1f0/0x1f0 [ 403.892170][ T3670] ? __do_sys_newfstat+0x7b/0xc0 [ 403.892173][ T3670] ? __do_sys_fstat+0xc0/0xc0 [ 403.892179][ T3670] ksys_read+0xf7/0x1d0 [ 403.892182][ T3670] ? vfs_write+0x12c0/0x12c0 [ 403.892188][ T3670] do_syscall_64+0xc1/0x370 [ 403.892193][ T3670] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 403.892196][ T3670] RIP: 0033:0x7f565ed1c292 [ 403.892201][ T3670] Code: c0 e9 b2 fe ff ff 50 48 8d 3d 6a 15 0c 00 e8 65 e1 01 00 0f 1f 44 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 0f 05 <48> 3d 00 f0 ff ff 77 56 c3 0f 1f 44 00 00 48 83 ec 28 48 89 54 24 [ 403.892204][ T3670] RSP: 002b:00007fffa3687038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 403.892211][ T3670] RAX: ffffffffffffffda RBX: 0000000034607920 RCX: 00007f565ed1c292 [ 403.892213][ T3670] RDX: 0000000000000400 RSI: 0000000034606500 RDI: 0000000000000006 [ 403.892215][ T3670] RBP: 00007f565ee145c0 R08: 0000000000000006 R09: 0000000000000000 [ 403.892216][ T3670] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000034607920 [ 403.892218][ T3670] R13: 0000000000000d68 R14: 00007f565ee139c0 R15: 0000000000000d68 [ 403.892224][ T3670] [ 403.892226][ T3670] [ 403.900562][ T3670] The buggy address belongs to the variable: [ 403.900767][ T3670] snmp6_ipstats_list+0x210/0x3e0 [ 403.900940][ T3670] [ 403.901032][ T3670] The buggy address belongs to the physical page: [ 403.901246][ T3670] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7a0e8 [ 403.901558][ T3670] flags: 0x80000000002000(reserved|node=0|zone=1) [ 403.901793][ T3670] raw: 0080000000002000 ffffea0001e83a08 ffffea0001e83a08 0000000000000000 [ 403.902098][ T3670] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 403.902404][ T3670] page dumped because: kasan: bad access detected [ 403.902617][ T3670] [ 403.902708][ T3670] Memory state around the buggy address: [ 403.902874][ T3670] ffffffff878e8380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 403.903133][ T3670] ffffffff878e8400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 403.903379][ T3670] >ffffffff878e8480: 00 00 00 00 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 [ 403.903627][ T3670] ^ [ 403.903798][ T3670] ffffffff878e8500: 00 01 f9 f9 f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 [ 403.904043][ T3670] ffffffff878e8580: 00 00 00 01 f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 [ 403.904292][ T3670] ================================================================== [ 403.905188][ T3670] Disabling lock debugging due to kernel taint