[ 15.210256][ T227] ================================================================== [ 15.210590][ T227] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 15.210908][ T227] Read of size 8 at addr ffffffff932d4790 by task unsigned-md5_ip/227 [ 15.211217][ T227] [ 15.211315][ T227] CPU: 3 UID: 0 PID: 227 Comm: unsigned-md5_ip Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 15.211323][ T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.211327][ T227] Call Trace: [ 15.211330][ T227] [ 15.211333][ T227] dump_stack_lvl+0x82/0xc0 [ 15.211344][ T227] print_address_description.constprop.0+0x2c/0x3a0 [ 15.211356][ T227] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 15.211360][ T227] print_report+0xb4/0x270 [ 15.211364][ T227] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 15.211367][ T227] ? kasan_addr_to_slab+0x21/0x70 [ 15.211371][ T227] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 15.211373][ T227] kasan_report+0xca/0x100 [ 15.211378][ T227] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 15.211383][ T227] snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 15.211388][ T227] ? sockstat6_seq_show+0x1d0/0x1d0 [ 15.211404][ T227] ? rcu_is_watching+0x12/0xb0 [ 15.211412][ T227] ? trace_kmalloc+0x26/0xd0 [ 15.211419][ T227] ? __kvmalloc_node_noprof+0x23f/0x570 [ 15.211429][ T227] snmp6_seq_show+0x68/0x190 [ 15.211434][ T227] seq_read_iter+0x3fa/0x1060 [ 15.211451][ T227] seq_read+0x2cc/0x4b0 [ 15.211456][ T227] ? seq_read_iter+0x1060/0x1060 [ 15.211461][ T227] ? __lock_acquire+0x449/0x7e0 [ 15.211473][ T227] ? __mutex_trylock_common+0xf9/0x260 [ 15.211480][ T227] ? rcu_is_watching+0x12/0xb0 [ 15.211489][ T227] proc_reg_read+0x1aa/0x270 [ 15.211500][ T227] vfs_read+0x17e/0xda0 [ 15.211508][ T227] ? fdget_pos+0x230/0x2f0 [ 15.211517][ T227] ? ww_mutex_lock+0x160/0x160 [ 15.211527][ T227] ? kernel_read+0x1f0/0x1f0 [ 15.211533][ T227] ? __lock_release+0x5d/0x170 [ 15.211540][ T227] ? __fget_files+0x199/0x300 [ 15.211547][ T227] ? __fget_files+0x1a3/0x300 [ 15.211558][ T227] ksys_read+0xf7/0x1d0 [ 15.211563][ T227] ? vfs_write+0x12c0/0x12c0 [ 15.211572][ T227] do_syscall_64+0xc1/0x370 [ 15.211579][ T227] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.211584][ T227] RIP: 0033:0x7f952d4702cc [ 15.211590][ T227] 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 [ 15.211594][ T227] RSP: 002b:00007ffc3114db00 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 15.211601][ T227] RAX: ffffffffffffffda RBX: 000000000b7fa8a0 RCX: 00007f952d4702cc [ 15.211604][ T227] RDX: 0000000000000400 RSI: 000000000b7facf0 RDI: 000000000000000b [ 15.211607][ T227] RBP: 00007f952d5685c0 R08: 0000000000000000 R09: 0000000000000001 [ 15.211610][ T227] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 15.211612][ T227] R13: 0000000000000d68 R14: 00007f952d5679c0 R15: 0000000000000d68 [ 15.211625][ T227] [ 15.211627][ T227] [ 15.224431][ T227] The buggy address belongs to the variable: [ 15.224743][ T227] snmp6_ipstats_list+0x210/0x3e0 [ 15.225001][ T227] [ 15.225135][ T227] The buggy address belongs to the physical page: [ 15.225447][ T227] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd0d4 [ 15.225912][ T227] flags: 0x80000000002000(reserved|node=0|zone=1) [ 15.226222][ T227] raw: 0080000000002000 ffffea0000343508 ffffea0000343508 0000000000000000 [ 15.226635][ T227] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 15.227083][ T227] page dumped because: kasan: bad access detected [ 15.227400][ T227] [ 15.227533][ T227] Memory state around the buggy address: [ 15.227781][ T227] ffffffff932d4680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.228159][ T227] ffffffff932d4700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.228548][ T227] >ffffffff932d4780: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 00 01 f9 f9 [ 15.228919][ T227] ^ [ 15.229169][ T227] ffffffff932d4800: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 00 01 [ 15.229537][ T227] ffffffff932d4880: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 00 06 f9 [ 15.229918][ T227] ================================================================== [ 15.230318][ T227] Disabling lock debugging due to kernel taint