[ 14.994694][ T228] ================================================================== [ 14.995059][ T228] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.995409][ T228] Read of size 8 at addr ffffffff870d4790 by task icmps-discard_i/228 [ 14.995707][ T228] [ 14.995809][ T228] CPU: 0 UID: 0 PID: 228 Comm: icmps-discard_i Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 14.995815][ T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.995818][ T228] Call Trace: [ 14.995820][ T228] [ 14.995822][ T228] dump_stack_lvl+0x82/0xc0 [ 14.995831][ T228] print_address_description.constprop.0+0x2c/0x3a0 [ 14.995840][ T228] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.995844][ T228] print_report+0xb4/0x270 [ 14.995848][ T228] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.995850][ T228] ? kasan_addr_to_slab+0x21/0x70 [ 14.995854][ T228] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.995857][ T228] kasan_report+0xca/0x100 [ 14.995861][ T228] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.995867][ T228] snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.995872][ T228] ? sockstat6_seq_show+0x1d0/0x1d0 [ 14.995885][ T228] ? rcu_is_watching+0x12/0xb0 [ 14.995894][ T228] ? trace_kmalloc+0x26/0xd0 [ 14.995900][ T228] ? __kvmalloc_node_noprof+0x23f/0x570 [ 14.995908][ T228] snmp6_seq_show+0x68/0x190 [ 14.995911][ T228] seq_read_iter+0x3fa/0x1060 [ 14.995921][ T228] seq_read+0x2cc/0x4b0 [ 14.995925][ T228] ? seq_read_iter+0x1060/0x1060 [ 14.995929][ T228] ? __lock_acquire+0x449/0x7e0 [ 14.995937][ T228] ? __mutex_trylock_common+0xf9/0x260 [ 14.995942][ T228] ? rcu_is_watching+0x12/0xb0 [ 14.995947][ T228] proc_reg_read+0x1aa/0x270 [ 14.995955][ T228] vfs_read+0x17e/0xda0 [ 14.995960][ T228] ? fdget_pos+0x230/0x2f0 [ 14.995966][ T228] ? ww_mutex_lock+0x160/0x160 [ 14.995972][ T228] ? kernel_read+0x1f0/0x1f0 [ 14.995975][ T228] ? __lock_release+0x5d/0x170 [ 14.995980][ T228] ? __fget_files+0x199/0x300 [ 14.995983][ T228] ? __fget_files+0x1a3/0x300 [ 14.995990][ T228] ksys_read+0xf7/0x1d0 [ 14.995993][ T228] ? vfs_write+0x12c0/0x12c0 [ 14.995999][ T228] do_syscall_64+0xc1/0x370 [ 14.996004][ T228] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.996008][ T228] RIP: 0033:0x7fc9285202cc [ 14.996013][ T228] 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 [ 14.996016][ T228] RSP: 002b:00007ffe487dd8a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 14.996020][ T228] RAX: ffffffffffffffda RBX: 000000002f36c8a0 RCX: 00007fc9285202cc [ 14.996022][ T228] RDX: 0000000000000400 RSI: 000000002f36ccf0 RDI: 000000000000000c [ 14.996024][ T228] RBP: 00007fc9286185c0 R08: 0000000000000000 R09: 0000000000000000 [ 14.996025][ T228] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 14.996027][ T228] R13: 0000000000000d68 R14: 00007fc9286179c0 R15: 0000000000000d68 [ 14.996034][ T228] [ 14.996035][ T228] [ 15.007287][ T228] The buggy address belongs to the variable: [ 15.007565][ T228] snmp6_ipstats_list+0x210/0x3e0 [ 15.007816][ T228] [ 15.007942][ T228] The buggy address belongs to the physical page: [ 15.008263][ T228] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x134d4 [ 15.008727][ T228] flags: 0x80000000002000(reserved|node=0|zone=1) [ 15.009069][ T228] raw: 0080000000002000 ffffea00004d3508 ffffea00004d3508 0000000000000000 [ 15.009494][ T228] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 15.009887][ T228] page dumped because: kasan: bad access detected [ 15.010188][ T228] [ 15.010307][ T228] Memory state around the buggy address: [ 15.010544][ T228] ffffffff870d4680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.010909][ T228] ffffffff870d4700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.011231][ T228] >ffffffff870d4780: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 00 01 f9 f9 [ 15.011539][ T228] ^ [ 15.011728][ T228] ffffffff870d4800: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 00 01 [ 15.012079][ T228] ffffffff870d4880: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 00 06 f9 [ 15.012434][ T228] ================================================================== [ 15.012837][ T228] Disabling lock debugging due to kernel taint [ 15.527064][ T228] icmps-discard_i (228) used greatest stack depth: 24416 bytes left