[ 725.678515][ T4968] ================================================================== [ 725.678835][ T4968] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 725.679150][ T4968] Read of size 8 at addr ffffffff9d6d4290 by task nstat/4968 [ 725.679460][ T4968] [ 725.679554][ T4968] CPU: 1 UID: 0 PID: 4968 Comm: nstat Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 725.679560][ T4968] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 725.679563][ T4968] Call Trace: [ 725.679565][ T4968] [ 725.679568][ T4968] dump_stack_lvl+0x82/0xc0 [ 725.679577][ T4968] print_address_description.constprop.0+0x2c/0x3a0 [ 725.679584][ T4968] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 725.679589][ T4968] print_report+0xb4/0x270 [ 725.679592][ T4968] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 725.679595][ T4968] ? kasan_addr_to_slab+0x21/0x70 [ 725.679599][ T4968] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 725.679602][ T4968] kasan_report+0xca/0x100 [ 725.679606][ T4968] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 725.679612][ T4968] snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 725.679617][ T4968] ? sockstat6_seq_show+0x1d0/0x1d0 [ 725.679630][ T4968] ? rcu_is_watching+0x12/0xb0 [ 725.679635][ T4968] ? trace_kmalloc+0x26/0xd0 [ 725.679642][ T4968] ? __kvmalloc_node_noprof+0x23f/0x570 [ 725.679647][ T4968] snmp6_seq_show+0x68/0x190 [ 725.679650][ T4968] seq_read_iter+0x3fa/0x1060 [ 725.679661][ T4968] seq_read+0x2cc/0x4b0 [ 725.679665][ T4968] ? seq_read_iter+0x1060/0x1060 [ 725.679668][ T4968] ? __might_fault+0x117/0x170 [ 725.679673][ T4968] ? efi_thunk_set_variable+0x41/0x270 [ 725.679680][ T4968] ? __might_fault+0x117/0x170 [ 725.679684][ T4968] ? cp_new_stat+0x3c6/0x540 [ 725.679689][ T4968] ? inode_set_bytes+0xa0/0xa0 [ 725.679693][ T4968] proc_reg_read+0x1aa/0x270 [ 725.679699][ T4968] vfs_read+0x17e/0xda0 [ 725.679707][ T4968] ? vfs_getattr_nosec+0x2b5/0x3e0 [ 725.679712][ T4968] ? kernel_read+0x1f0/0x1f0 [ 725.679716][ T4968] ? vfs_fstat+0x3f/0x80 [ 725.679720][ T4968] ? __do_sys_newfstat+0x7b/0xc0 [ 725.679723][ T4968] ? __do_sys_fstat+0xc0/0xc0 [ 725.679729][ T4968] ksys_read+0xf7/0x1d0 [ 725.679732][ T4968] ? vfs_write+0x12c0/0x12c0 [ 725.679738][ T4968] do_syscall_64+0xc1/0x370 [ 725.679743][ T4968] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 725.679748][ T4968] RIP: 0033:0x7fdb15039292 [ 725.679752][ T4968] 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 [ 725.679755][ T4968] RSP: 002b:00007ffc54e32408 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 725.679760][ T4968] RAX: ffffffffffffffda RBX: 000000003a011910 RCX: 00007fdb15039292 [ 725.679763][ T4968] RDX: 0000000000000400 RSI: 000000003a011500 RDI: 000000000000000a [ 725.679765][ T4968] RBP: 00007fdb151315c0 R08: 000000000000000a R09: 0000000000000000 [ 725.679766][ T4968] R10: 0000000000000000 R11: 0000000000000246 R12: 000000003a011910 [ 725.679768][ T4968] R13: 0000000000000d68 R14: 00007fdb151309c0 R15: 0000000000000d68 [ 725.679774][ T4968] [ 725.679776][ T4968] [ 725.688868][ T4968] The buggy address belongs to the variable: [ 725.689085][ T4968] snmp6_ipstats_list+0x210/0x3e0 [ 725.689273][ T4968] [ 725.689364][ T4968] The buggy address belongs to the physical page: [ 725.689589][ T4968] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2aed4 [ 725.689930][ T4968] flags: 0x80000000002000(reserved|node=0|zone=1) [ 725.690165][ T4968] raw: 0080000000002000 ffffea0000abb508 ffffea0000abb508 0000000000000000 [ 725.690488][ T4968] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 725.690809][ T4968] page dumped because: kasan: bad access detected [ 725.691027][ T4968] [ 725.691117][ T4968] Memory state around the buggy address: [ 725.691293][ T4968] ffffffff9d6d4180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 725.691557][ T4968] ffffffff9d6d4200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 725.691831][ T4968] >ffffffff9d6d4280: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 00 01 f9 f9 [ 725.692105][ T4968] ^ [ 725.692282][ T4968] ffffffff9d6d4300: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 00 01 [ 725.692544][ T4968] ffffffff9d6d4380: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 00 06 f9 [ 725.692805][ T4968] ================================================================== [ 725.693088][ T4968] Disabling lock debugging due to kernel taint