================================================================== BUG: KASAN: use-after-free in rht_key_hashfn /./include/linux/rhashtable.h:159 [inline] BUG: KASAN: use-after-free in __rhashtable_lookup /./include/linux/rhashtable.h:603 [inline] BUG: KASAN: use-after-free in rhashtable_lookup /./include/linux/rhashtable.h:645 [inline] BUG: KASAN: use-after-free in rhashtable_lookup_fast /./include/linux/rhashtable.h:671 [inline] BUG: KASAN: use-after-free in ila_lookup_wildcards /net/ipv6/ila/ila_xlat.c:133 [inline] BUG: KASAN: use-after-free in ila_xlat_addr /net/ipv6/ila/ila_xlat.c:650 [inline] BUG: KASAN: use-after-free in ila_nf_input+0xcdb/0xe30 /net/ipv6/ila/ila_xlat.c:191 Read of size 4 at addr ffff8880a4ab60c8 by task ksoftirqd/1/16 CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.2.0+ #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack /lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 /lib/dump_stack.c:113 print_address_description.cold+0xd4/0x306 /mm/kasan/report.c:351 __kasan_report.cold+0x1b/0x36 /mm/kasan/report.c:482 kasan_report+0x12/0x20 /mm/kasan/common.c:612 __asan_report_load4_noabort+0x14/0x20 /mm/kasan/generic_report.c:131 rht_key_hashfn /./include/linux/rhashtable.h:159 [inline] __rhashtable_lookup /./include/linux/rhashtable.h:603 [inline] rhashtable_lookup /./include/linux/rhashtable.h:645 [inline] rhashtable_lookup_fast /./include/linux/rhashtable.h:671 [inline] ila_lookup_wildcards /net/ipv6/ila/ila_xlat.c:133 [inline] ila_xlat_addr /net/ipv6/ila/ila_xlat.c:650 [inline] ila_nf_input+0xcdb/0xe30 /net/ipv6/ila/ila_xlat.c:191 nf_hook_entry_hookfn /./include/linux/netfilter.h:135 [inline] nf_hook_slow+0xbc/0x1e0 /net/netfilter/core.c:512 nf_hook /./include/linux/netfilter.h:260 [inline] NF_HOOK /./include/linux/netfilter.h:303 [inline] ipv6_rcv+0x25d/0x420 /net/ipv6/ip6_input.c:272 __netif_receive_skb_one_core+0x113/0x1a0 /net/core/dev.c:4999 __netif_receive_skb+0x2c/0x1d0 /net/core/dev.c:5113 process_backlog+0x206/0x750 /net/core/dev.c:5924 napi_poll /net/core/dev.c:6347 [inline] net_rx_action+0x4d6/0x1030 /net/core/dev.c:6413 __do_softirq+0x262/0x98c /kernel/softirq.c:292 run_ksoftirqd /kernel/softirq.c:603 [inline] run_ksoftirqd+0x8e/0x110 /kernel/softirq.c:595 smpboot_thread_fn+0x6a3/0xa40 /kernel/smpboot.c:165 kthread+0x361/0x430 /kernel/kthread.c:255 ret_from_fork+0x24/0x30 /arch/x86/entry/entry_64.S:352 Allocated by task 9193: save_stack+0x23/0x90 /mm/kasan/common.c:69 set_track /mm/kasan/common.c:77 [inline] __kasan_kmalloc /mm/kasan/common.c:487 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 /mm/kasan/common.c:460 kasan_kmalloc+0x9/0x10 /mm/kasan/common.c:501 __do_kmalloc_node /mm/slab.c:3615 [inline] __kmalloc_node+0x4e/0x70 /mm/slab.c:3622 kmalloc_node /./include/linux/slab.h:595 [inline] kvmalloc_node+0x68/0x100 /mm/util.c:384 kvmalloc /./include/linux/mm.h:653 [inline] kvzalloc /./include/linux/mm.h:661 [inline] bucket_table_alloc+0x90/0x480 /lib/rhashtable.c:175 rhashtable_rehash_alloc+0x70/0x100 /lib/rhashtable.c:351 rhashtable_shrink /lib/rhashtable.c:395 [inline] rht_deferred_worker+0x176a/0x1c60 /lib/rhashtable.c:413 process_one_work+0x9af/0x1740 /kernel/workqueue.c:2269 worker_thread+0x98/0xe40 /kernel/workqueue.c:2415 kthread+0x361/0x430 /kernel/kthread.c:255 ret_from_fork+0x24/0x30 /arch/x86/entry/entry_64.S:352 Freed by task 29: save_stack+0x23/0x90 /mm/kasan/common.c:69 set_track /mm/kasan/common.c:77 [inline] __kasan_slab_free+0x102/0x150 /mm/kasan/common.c:449 kasan_slab_free+0xe/0x10 /mm/kasan/common.c:457 __cache_free /mm/slab.c:3425 [inline] kfree+0x10a/0x2c0 /mm/slab.c:3756 kvfree+0x61/0x70 /mm/util.c:413 bucket_table_free+0x69/0x150 /lib/rhashtable.c:105 rhashtable_free_and_destroy+0x162/0x8b0 /lib/rhashtable.c:1152 ila_xlat_exit_net+0x1a4/0x360 /net/ipv6/ila/ila_xlat.c:624 ila_exit_net+0x16/0x20 /net/ipv6/ila/ila_main.c:76 ops_exit_list.isra.0+0xaa/0x150 /net/core/net_namespace.c:172 cleanup_net+0x4e2/0xa70 /net/core/net_namespace.c:594 process_one_work+0x9af/0x1740 /kernel/workqueue.c:2269 worker_thread+0x98/0xe40 /kernel/workqueue.c:2415 kthread+0x361/0x430 /kernel/kthread.c:255 ret_from_fork+0x24/0x30 /arch/x86/entry/entry_64.S:352 The buggy address belongs to the object at ffff8880a4ab60c0 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 8 bytes inside of 4096-byte region [ffff8880a4ab60c0, ffff8880a4ab70c0) The buggy address belongs to the page: page:ffffea000292ad80 refcount:1 mapcount:0 mapping:ffff8880aa402000 index:0x0 compound_mapcount: 0 flags: 0x1fffc0000010200(slab|head) raw: 01fffc0000010200 ffffea00028e2f08 ffffea0001939c08 ffff8880aa402000 raw: 0000000000000000 ffff8880a4ab60c0 0000000100000001 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880a4ab5f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880a4ab6000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8880a4ab6080: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb ^ ffff8880a4ab6100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880a4ab6180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================