[ 13.707161][ T227] ================================================================== [ 13.707468][ T227] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 13.707792][ T227] Read of size 8 at addr ffffffffba0d4790 by task restore_ipv4/227 [ 13.708063][ T227] [ 13.708158][ T227] CPU: 2 UID: 0 PID: 227 Comm: restore_ipv4 Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 13.708163][ T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.708165][ T227] Call Trace: [ 13.708169][ T227] [ 13.708172][ T227] dump_stack_lvl+0x82/0xc0 [ 13.708183][ T227] print_address_description.constprop.0+0x2c/0x3a0 [ 13.708195][ T227] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 13.708199][ T227] print_report+0xb4/0x270 [ 13.708202][ T227] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 13.708205][ T227] ? kasan_addr_to_slab+0x21/0x70 [ 13.708209][ T227] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 13.708211][ T227] kasan_report+0xca/0x100 [ 13.708215][ T227] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 13.708220][ T227] snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 13.708225][ T227] ? sockstat6_seq_show+0x1d0/0x1d0 [ 13.708237][ T227] ? rcu_is_watching+0x12/0xb0 [ 13.708247][ T227] ? trace_kmalloc+0x26/0xd0 [ 13.708252][ T227] ? __kvmalloc_node_noprof+0x23f/0x570 [ 13.708258][ T227] snmp6_seq_show+0x68/0x190 [ 13.708263][ T227] seq_read_iter+0x3fa/0x1060 [ 13.708276][ T227] seq_read+0x2cc/0x4b0 [ 13.708279][ T227] ? seq_read_iter+0x1060/0x1060 [ 13.708283][ T227] ? __lock_acquire+0x449/0x7e0 [ 13.708293][ T227] ? __mutex_trylock_common+0xf9/0x260 [ 13.708300][ T227] ? rcu_is_watching+0x12/0xb0 [ 13.708308][ T227] proc_reg_read+0x1aa/0x270 [ 13.708322][ T227] vfs_read+0x17e/0xda0 [ 13.708329][ T227] ? fdget_pos+0x230/0x2f0 [ 13.708337][ T227] ? ww_mutex_lock+0x160/0x160 [ 13.708350][ T227] ? kernel_read+0x1f0/0x1f0 [ 13.708354][ T227] ? __lock_release+0x5d/0x170 [ 13.708358][ T227] ? __fget_files+0x199/0x300 [ 13.708362][ T227] ? __fget_files+0x1a3/0x300 [ 13.708369][ T227] ksys_read+0xf7/0x1d0 [ 13.708372][ T227] ? vfs_write+0x12c0/0x12c0 [ 13.708378][ T227] do_syscall_64+0xc1/0x370 [ 13.708383][ T227] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.708389][ T227] RIP: 0033:0x7f255acfa2cc [ 13.708392][ 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 [ 13.708395][ T227] RSP: 002b:00007ffda1baf880 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 13.708403][ T227] RAX: ffffffffffffffda RBX: 00000000176888a0 RCX: 00007f255acfa2cc [ 13.708405][ T227] RDX: 0000000000000400 RSI: 0000000017688cf0 RDI: 0000000000000009 [ 13.708407][ T227] RBP: 00007f255adf25c0 R08: 0000000000000000 R09: 0000000000000000 [ 13.708409][ T227] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 13.708411][ T227] R13: 0000000000000d68 R14: 00007f255adf19c0 R15: 0000000000000d68 [ 13.708417][ T227] [ 13.708418][ T227] [ 13.717431][ T227] The buggy address belongs to the variable: [ 13.717653][ T227] snmp6_ipstats_list+0x210/0x3e0 [ 13.717833][ T227] [ 13.717923][ T227] The buggy address belongs to the physical page: [ 13.718141][ T227] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a4d4 [ 13.718448][ T227] flags: 0x80000000002000(reserved|node=0|zone=1) [ 13.718676][ T227] raw: 0080000000002000 ffffea0000693508 ffffea0000693508 0000000000000000 [ 13.718992][ T227] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 13.719312][ T227] page dumped because: kasan: bad access detected [ 13.719526][ T227] [ 13.719614][ T227] Memory state around the buggy address: [ 13.719781][ T227] ffffffffba0d4680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 13.720034][ T227] ffffffffba0d4700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 13.720283][ T227] >ffffffffba0d4780: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 00 01 f9 f9 [ 13.720537][ T227] ^ [ 13.720706][ T227] ffffffffba0d4800: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 00 01 [ 13.720955][ T227] ffffffffba0d4880: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 00 06 f9 [ 13.721200][ T227] ================================================================== [ 13.721703][ T227] Disabling lock debugging due to kernel taint