[ 31.515496][ T234] ================================================================== [ 31.516761][ T234] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 31.517996][ T234] Read of size 8 at addr ffffffffac0d4790 by task connect_ipv4/234 [ 31.519081][ T234] [ 31.519571][ T234] CPU: 1 UID: 0 PID: 234 Comm: connect_ipv4 Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 31.519580][ T234] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 31.519583][ T234] Call Trace: [ 31.519586][ T234] [ 31.519589][ T234] dump_stack_lvl+0x82/0xc0 [ 31.519602][ T234] print_address_description.constprop.0+0x2c/0x3a0 [ 31.519613][ T234] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 31.519621][ T234] print_report+0xb4/0x270 [ 31.519626][ T234] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 31.519630][ T234] ? kasan_addr_to_slab+0x21/0x70 [ 31.519636][ T234] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 31.519640][ T234] kasan_report+0xca/0x100 [ 31.519646][ T234] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 31.519656][ T234] snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 31.519665][ T234] ? sockstat6_seq_show+0x1d0/0x1d0 [ 31.519692][ T234] ? rcu_is_watching+0x12/0xb0 [ 31.519700][ T234] ? trace_kmalloc+0x26/0xd0 [ 31.519706][ T234] ? __kvmalloc_node_noprof+0x23f/0x570 [ 31.519715][ T234] snmp6_seq_show+0x68/0x190 [ 31.519720][ T234] seq_read_iter+0x3fa/0x1060 [ 31.519735][ T234] seq_read+0x2cc/0x4b0 [ 31.519740][ T234] ? seq_read_iter+0x1060/0x1060 [ 31.519746][ T234] ? __lock_acquire+0x449/0x7e0 [ 31.519756][ T234] ? __mutex_trylock_common+0xf9/0x260 [ 31.519764][ T234] ? rcu_is_watching+0x12/0xb0 [ 31.519773][ T234] proc_reg_read+0x1aa/0x270 [ 31.519782][ T234] vfs_read+0x17e/0xda0 [ 31.519789][ T234] ? fdget_pos+0x230/0x2f0 [ 31.519797][ T234] ? ww_mutex_lock+0x160/0x160 [ 31.519806][ T234] ? kernel_read+0x1f0/0x1f0 [ 31.519811][ T234] ? __lock_release+0x5d/0x170 [ 31.519818][ T234] ? __fget_files+0x199/0x300 [ 31.519825][ T234] ? __fget_files+0x1a3/0x300 [ 31.519837][ T234] ksys_read+0xf7/0x1d0 [ 31.519843][ T234] ? vfs_write+0x12c0/0x12c0 [ 31.519853][ T234] do_syscall_64+0xc1/0x370 [ 31.519862][ T234] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 31.519868][ T234] RIP: 0033:0x7f3bbc82c2cc [ 31.519874][ T234] 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 [ 31.519879][ T234] RSP: 002b:00007f3bbbf282d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 31.519886][ T234] RAX: ffffffffffffffda RBX: 00007f3bac000b60 RCX: 00007f3bbc82c2cc [ 31.519890][ T234] RDX: 0000000000000400 RSI: 00007f3bac000dc0 RDI: 000000000000000c [ 31.519892][ T234] RBP: 00007f3bbc9245c0 R08: 0000000000000000 R09: 0000000000000000 [ 31.519895][ T234] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 31.519898][ T234] R13: 0000000000000d68 R14: 00007f3bbc9239c0 R15: 0000000000000d68 [ 31.519910][ T234] [ 31.519912][ T234] [ 31.564144][ T234] The buggy address belongs to the variable: [ 31.565068][ T234] snmp6_ipstats_list+0x210/0x3e0 [ 31.565758][ T234] [ 31.566088][ T234] The buggy address belongs to the physical page: [ 31.566996][ T234] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x366d4 [ 31.568635][ T234] flags: 0x80000000002000(reserved|node=0|zone=1) [ 31.569776][ T234] raw: 0080000000002000 ffffea0000d9b508 ffffea0000d9b508 0000000000000000 [ 31.571164][ T234] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 31.572657][ T234] page dumped because: kasan: bad access detected [ 31.573774][ T234] [ 31.574139][ T234] Memory state around the buggy address: [ 31.574935][ T234] ffffffffac0d4680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.576162][ T234] ffffffffac0d4700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.577425][ T234] >ffffffffac0d4780: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 00 01 f9 f9 [ 31.578614][ T234] ^ [ 31.579494][ T234] ffffffffac0d4800: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 00 01 [ 31.580633][ T234] ffffffffac0d4880: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 00 06 f9 [ 31.581792][ T234] ================================================================== [ 31.583010][ T234] Disabling lock debugging due to kernel taint [ 31.916802][ T229] connect_ipv4 (229) used greatest stack depth: 24552 bytes left