[ 13.021965][ T228] ================================================================== [ 13.022231][ T228] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 13.022516][ T228] Read of size 8 at addr ffffffffab6d4790 by task icmps-accept_ip/228 [ 13.022748][ T228] [ 13.022829][ T228] CPU: 3 UID: 0 PID: 228 Comm: icmps-accept_ip Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 13.022834][ T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.022836][ T228] Call Trace: [ 13.022838][ T228] [ 13.022840][ T228] dump_stack_lvl+0x82/0xc0 [ 13.022846][ T228] print_address_description.constprop.0+0x2c/0x3a0 [ 13.022853][ T228] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 13.022856][ T228] print_report+0xb4/0x270 [ 13.022859][ T228] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 13.022862][ T228] ? kasan_addr_to_slab+0x21/0x70 [ 13.022866][ T228] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 13.022868][ T228] kasan_report+0xca/0x100 [ 13.022872][ T228] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 13.022878][ T228] snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 13.022882][ T228] ? sockstat6_seq_show+0x1d0/0x1d0 [ 13.022894][ T228] ? rcu_is_watching+0x12/0xb0 [ 13.022899][ T228] ? trace_kmalloc+0x26/0xd0 [ 13.022902][ T228] ? __kvmalloc_node_noprof+0x23f/0x570 [ 13.022907][ T228] snmp6_seq_show+0x68/0x190 [ 13.022910][ T228] seq_read_iter+0x3fa/0x1060 [ 13.022919][ T228] seq_read+0x2cc/0x4b0 [ 13.022923][ T228] ? seq_read_iter+0x1060/0x1060 [ 13.022927][ T228] ? __lock_acquire+0x449/0x7e0 [ 13.022934][ T228] ? __mutex_trylock_common+0xf9/0x260 [ 13.022938][ T228] ? rcu_is_watching+0x12/0xb0 [ 13.022943][ T228] proc_reg_read+0x1aa/0x270 [ 13.022949][ T228] vfs_read+0x17e/0xda0 [ 13.022952][ T228] ? fdget_pos+0x230/0x2f0 [ 13.022957][ T228] ? ww_mutex_lock+0x160/0x160 [ 13.022963][ T228] ? kernel_read+0x1f0/0x1f0 [ 13.022966][ T228] ? __lock_release+0x5d/0x170 [ 13.022970][ T228] ? __fget_files+0x199/0x300 [ 13.022974][ T228] ? __fget_files+0x1a3/0x300 [ 13.022981][ T228] ksys_read+0xf7/0x1d0 [ 13.022984][ T228] ? vfs_write+0x12c0/0x12c0 [ 13.022990][ T228] do_syscall_64+0xc1/0x370 [ 13.022995][ T228] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.022998][ T228] RIP: 0033:0x7fb7b2b8e2cc [ 13.023002][ 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 [ 13.023005][ T228] RSP: 002b:00007ffef00f15b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 13.023009][ T228] RAX: ffffffffffffffda RBX: 0000000020a328a0 RCX: 00007fb7b2b8e2cc [ 13.023011][ T228] RDX: 0000000000000400 RSI: 0000000020a32cf0 RDI: 000000000000000c [ 13.023012][ T228] RBP: 00007fb7b2c865c0 R08: 0000000000000000 R09: 0000000000000000 [ 13.023014][ T228] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 13.023015][ T228] R13: 0000000000000d68 R14: 00007fb7b2c859c0 R15: 0000000000000d68 [ 13.023021][ T228] [ 13.023023][ T228] [ 13.031058][ T228] The buggy address belongs to the variable: [ 13.031249][ T228] snmp6_ipstats_list+0x210/0x3e0 [ 13.031402][ T228] [ 13.031483][ T228] The buggy address belongs to the physical page: [ 13.031682][ T228] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x352d4 [ 13.031963][ T228] flags: 0x80000000002000(reserved|node=0|zone=1) [ 13.032165][ T228] raw: 0080000000002000 ffffea0000d4b508 ffffea0000d4b508 0000000000000000 [ 13.032450][ T228] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 13.032725][ T228] page dumped because: kasan: bad access detected [ 13.032922][ T228] [ 13.033000][ T228] Memory state around the buggy address: [ 13.033161][ T228] ffffffffab6d4680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 13.033392][ T228] ffffffffab6d4700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 13.033621][ T228] >ffffffffab6d4780: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 00 01 f9 f9 [ 13.033853][ T228] ^ [ 13.034005][ T228] ffffffffab6d4800: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 00 01 [ 13.034231][ T228] ffffffffab6d4880: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 00 06 f9 [ 13.034454][ T228] ================================================================== [ 13.034717][ T228] Disabling lock debugging due to kernel taint