[ 12.378240][ T232] ================================================================== [ 12.378512][ T232] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 12.378785][ T232] Read of size 8 at addr ffffffffa24d4790 by task connect_ipv6/232 [ 12.379043][ T232] [ 12.379123][ T232] CPU: 2 UID: 0 PID: 232 Comm: connect_ipv6 Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 12.379128][ T232] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.379130][ T232] Call Trace: [ 12.379132][ T232] [ 12.379134][ T232] dump_stack_lvl+0x82/0xc0 [ 12.379140][ T232] print_address_description.constprop.0+0x2c/0x3a0 [ 12.379146][ T232] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 12.379150][ T232] print_report+0xb4/0x270 [ 12.379153][ T232] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 12.379156][ T232] ? kasan_addr_to_slab+0x21/0x70 [ 12.379160][ T232] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 12.379162][ T232] kasan_report+0xca/0x100 [ 12.379166][ T232] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 12.379171][ T232] snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 12.379176][ T232] ? sockstat6_seq_show+0x1d0/0x1d0 [ 12.379187][ T232] ? rcu_is_watching+0x12/0xb0 [ 12.379193][ T232] ? trace_kmalloc+0x26/0xd0 [ 12.379196][ T232] ? __kvmalloc_node_noprof+0x23f/0x570 [ 12.379201][ T232] snmp6_seq_show+0x68/0x190 [ 12.379204][ T232] seq_read_iter+0x3fa/0x1060 [ 12.379213][ T232] seq_read+0x2cc/0x4b0 [ 12.379217][ T232] ? seq_read_iter+0x1060/0x1060 [ 12.379221][ T232] ? __lock_acquire+0x449/0x7e0 [ 12.379228][ T232] ? __mutex_trylock_common+0xf9/0x260 [ 12.379233][ T232] ? rcu_is_watching+0x12/0xb0 [ 12.379237][ T232] proc_reg_read+0x1aa/0x270 [ 12.379244][ T232] vfs_read+0x17e/0xda0 [ 12.379249][ T232] ? fdget_pos+0x230/0x2f0 [ 12.379253][ T232] ? ww_mutex_lock+0x160/0x160 [ 12.379259][ T232] ? kernel_read+0x1f0/0x1f0 [ 12.379262][ T232] ? __lock_release+0x5d/0x170 [ 12.379266][ T232] ? __fget_files+0x199/0x300 [ 12.379270][ T232] ? __fget_files+0x1a3/0x300 [ 12.379277][ T232] ksys_read+0xf7/0x1d0 [ 12.379280][ T232] ? vfs_write+0x12c0/0x12c0 [ 12.379286][ T232] do_syscall_64+0xc1/0x370 [ 12.379291][ T232] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.379295][ T232] RIP: 0033:0x7ff7deb152cc [ 12.379298][ T232] 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 [ 12.379301][ T232] RSP: 002b:00007ff7de2112d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 12.379305][ T232] RAX: ffffffffffffffda RBX: 00007ff7d0000b60 RCX: 00007ff7deb152cc [ 12.379308][ T232] RDX: 0000000000000400 RSI: 00007ff7d0000dc0 RDI: 000000000000000c [ 12.379309][ T232] RBP: 00007ff7dec0d5c0 R08: 0000000000000000 R09: 0000000000000000 [ 12.379311][ T232] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 12.379313][ T232] R13: 0000000000000d68 R14: 00007ff7dec0c9c0 R15: 0000000000000d68 [ 12.379319][ T232] [ 12.379320][ T232] [ 12.387335][ T232] The buggy address belongs to the variable: [ 12.387539][ T232] snmp6_ipstats_list+0x210/0x3e0 [ 12.387696][ T232] [ 12.387774][ T232] The buggy address belongs to the physical page: [ 12.387970][ T232] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9cd4 [ 12.388247][ T232] flags: 0x80000000002000(reserved|node=0|zone=1) [ 12.388452][ T232] raw: 0080000000002000 ffffea0000273508 ffffea0000273508 0000000000000000 [ 12.388739][ T232] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 12.389016][ T232] page dumped because: kasan: bad access detected [ 12.389208][ T232] [ 12.389285][ T232] Memory state around the buggy address: [ 12.389442][ T232] ffffffffa24d4680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.389671][ T232] ffffffffa24d4700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.389897][ T232] >ffffffffa24d4780: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 00 01 f9 f9 [ 12.390123][ T232] ^ [ 12.390274][ T232] ffffffffa24d4800: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 00 01 [ 12.390504][ T232] ffffffffa24d4880: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 00 06 f9 [ 12.390730][ T232] ================================================================== [ 12.391020][ T232] Disabling lock debugging due to kernel taint [ 12.497433][ T226] connect_ipv6 (226) used greatest stack depth: 24776 bytes left