[ 16.439643][ T272] ip (272) used greatest stack depth: 24448 bytes left [ 32.179873][ T385] netem: version 1.3 [ 32.595113][ T390] ================================================================== [ 32.595372][ T390] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 32.595659][ T390] Read of size 8 at addr ffffffffb22e3970 by task nstat/390 [ 32.595890][ T390] [ 32.595972][ T390] CPU: 0 UID: 0 PID: 390 Comm: nstat Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 32.595977][ T390] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 32.595979][ T390] Call Trace: [ 32.595981][ T390] [ 32.595983][ T390] dump_stack_lvl+0x82/0xc0 [ 32.595991][ T390] print_address_description.constprop.0+0x2c/0x3a0 [ 32.595998][ T390] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 32.596002][ T390] print_report+0xb4/0x270 [ 32.596005][ T390] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 32.596008][ T390] ? kasan_addr_to_slab+0x21/0x70 [ 32.596011][ T390] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 32.596015][ T390] kasan_report+0xca/0x100 [ 32.596018][ T390] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 32.596024][ T390] snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 32.596029][ T390] ? sockstat6_seq_show+0x1d0/0x1d0 [ 32.596041][ T390] ? rcu_is_watching+0x12/0xb0 [ 32.596049][ T390] ? trace_kmalloc+0x26/0xd0 [ 32.596055][ T390] ? __kvmalloc_node_noprof+0x23f/0x570 [ 32.596060][ T390] snmp6_seq_show+0x68/0x190 [ 32.596064][ T390] seq_read_iter+0x3fa/0x1060 [ 32.596074][ T390] seq_read+0x2cc/0x4b0 [ 32.596077][ T390] ? seq_read_iter+0x1060/0x1060 [ 32.596081][ T390] ? __might_fault+0x117/0x170 [ 32.596088][ T390] ? __might_fault+0x117/0x170 [ 32.596093][ T390] ? cp_new_stat+0x3c6/0x540 [ 32.596097][ T390] ? inode_set_bytes+0xa0/0xa0 [ 32.596101][ T390] proc_reg_read+0x1aa/0x270 [ 32.596108][ T390] vfs_read+0x17e/0xda0 [ 32.596113][ T390] ? vfs_getattr_nosec+0x2b5/0x3e0 [ 32.596116][ T390] ? kernel_read+0x1f0/0x1f0 [ 32.596119][ T390] ? vfs_fstat+0x3f/0x80 [ 32.596122][ T390] ? __do_sys_newfstat+0x7b/0xc0 [ 32.596125][ T390] ? __do_sys_fstat+0xc0/0xc0 [ 32.596131][ T390] ksys_read+0xf7/0x1d0 [ 32.596134][ T390] ? vfs_write+0x12c0/0x12c0 [ 32.596140][ T390] do_syscall_64+0xc1/0x370 [ 32.596148][ T390] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 32.596151][ T390] RIP: 0033:0x7fb51a1bf292 [ 32.596155][ T390] 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 [ 32.596158][ T390] RSP: 002b:00007fff14e86e98 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 32.596162][ T390] RAX: ffffffffffffffda RBX: 000000001e226910 RCX: 00007fb51a1bf292 [ 32.596164][ T390] RDX: 0000000000000400 RSI: 000000001e226500 RDI: 0000000000000006 [ 32.596166][ T390] RBP: 00007fb51a2b75c0 R08: 0000000000000006 R09: 0000000000000000 [ 32.596168][ T390] R10: 0000000000000000 R11: 0000000000000246 R12: 000000001e226910 [ 32.596169][ T390] R13: 0000000000000d68 R14: 00007fb51a2b69c0 R15: 0000000000000d68 [ 32.596176][ T390] [ 32.596177][ T390] [ 32.604144][ T390] The buggy address belongs to the variable: [ 32.604343][ T390] snmp6_ipstats_list+0x210/0x3e0 [ 32.604502][ T390] [ 32.604587][ T390] The buggy address belongs to the physical page: [ 32.604778][ T390] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2a8e3 [ 32.605054][ T390] flags: 0x80000000002000(reserved|node=0|zone=1) [ 32.605258][ T390] raw: 0080000000002000 ffffea0000aa38c8 ffffea0000aa38c8 0000000000000000 [ 32.605549][ T390] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 32.605828][ T390] page dumped because: kasan: bad access detected [ 32.606021][ T390] [ 32.606099][ T390] Memory state around the buggy address: [ 32.606262][ T390] ffffffffb22e3800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 32.606494][ T390] ffffffffb22e3880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 32.606721][ T390] >ffffffffb22e3900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f9 f9 [ 32.606950][ T390] ^ [ 32.607188][ T390] ffffffffb22e3980: f9 f9 f9 f9 00 00 00 00 00 01 f9 f9 f9 f9 f9 f9 [ 32.607415][ T390] ffffffffb22e3a00: 00 00 04 f9 f9 f9 f9 f9 00 00 00 01 f9 f9 f9 f9 [ 32.607644][ T390] ================================================================== [ 32.607881][ T390] Disabling lock debugging due to kernel taint