Alexander Potapenko <glider@xxxxxxxxxx> wrote: > KMSAN started reporting an error when accessing ct->timeout for the > first time without initialization: > > BUG: KMSAN: uninit-value in __nf_ct_refresh_acct+0x1ae/0x470 net/netfilter/nf_conntrack_core.c:1765 > ... > dump_stack+0x173/0x1d0 lib/dump_stack.c:113 > kmsan_report+0x131/0x2a0 mm/kmsan/kmsan.c:624 > __msan_warning+0x7a/0xf0 mm/kmsan/kmsan_instr.c:310 > __nf_ct_refresh_acct+0x1ae/0x470 net/netfilter/nf_conntrack_core.c:1765 > nf_ct_refresh_acct ./include/net/netfilter/nf_conntrack.h:201 > nf_conntrack_udp_packet+0xb44/0x1040 net/netfilter/nf_conntrack_proto_udp.c:122 > nf_conntrack_handle_packet net/netfilter/nf_conntrack_core.c:1605 > nf_conntrack_in+0x1250/0x26c9 net/netfilter/nf_conntrack_core.c:1696 > ... > Uninit was created at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:205 > kmsan_internal_poison_shadow+0x92/0x150 mm/kmsan/kmsan.c:159 > kmsan_kmalloc+0xa9/0x130 mm/kmsan/kmsan_hooks.c:173 > kmem_cache_alloc+0x554/0xb10 mm/slub.c:2789 > __nf_conntrack_alloc+0x16f/0x690 net/netfilter/nf_conntrack_core.c:1342 > init_conntrack+0x6cb/0x2490 net/netfilter/nf_conntrack_core.c:1421 Acked-by: Florian Westphal <fw@xxxxxxxxx>
