bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): Released all slaves ================================================================== BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:71 [inline] BUG: KASAN: use-after-free in atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] BUG: KASAN: use-after-free in ip6mr_sk_done+0xea/0x360 net/ipv6/ip6mr.c:1578 Read of size 4 at addr ffff888013da0a88 by task kworker/u4:0/8 CPU: 0 PID: 8 Comm: kworker/u4:0 Not tainted 5.17.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x8d/0x336 mm/kasan/report.c:255 __kasan_report mm/kasan/report.c:442 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:459 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:71 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] ip6mr_sk_done+0xea/0x360 net/ipv6/ip6mr.c:1578 rawv6_close+0x3e/0x60 net/ipv6/raw.c:1201 inet_release+0xef/0x210 net/ipv4/af_inet.c:428 __sock_release net/socket.c:650 [inline] sock_release+0x7d/0x190 net/socket.c:678 inet_ctl_sock_destroy include/net/inet_common.h:65 [inline] igmp6_net_exit+0x61/0x160 net/ipv6/mcast.c:3173 ops_exit_list+0x94/0x160 net/core/net_namespace.c:168 cleanup_net+0x423/0x980 net/core/net_namespace.c:600 process_one_work+0x879/0x1410 kernel/workqueue.c:2307 worker_thread+0x5a0/0xf60 kernel/workqueue.c:2454 kthread+0x299/0x340 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Allocated by task 0: (stack is not available) Freed by task 8: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track+0x21/0x30 mm/kasan/common.c:45 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370 ____kasan_slab_free mm/kasan/common.c:366 [inline] ____kasan_slab_free+0x130/0x160 mm/kasan/common.c:328 kasan_slab_free include/linux/kasan.h:236 [inline] slab_free_hook mm/slub.c:1728 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1754 slab_free mm/slub.c:3509 [inline] kfree+0xcb/0x280 mm/slub.c:4562 ops_exit_list+0x94/0x160 net/core/net_namespace.c:168 cleanup_net+0x423/0x980 net/core/net_namespace.c:600 process_one_work+0x879/0x1410 kernel/workqueue.c:2307 worker_thread+0x5a0/0xf60 kernel/workqueue.c:2454 kthread+0x299/0x340 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 The buggy address belongs to the object at ffff888013da0a00 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 136 bytes inside of 256-byte region [ffff888013da0a00, ffff888013da0b00) The buggy address belongs to the page: page:ffffea00004f6800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x13da0 head:ffffea00004f6800 order:1 compound_mapcount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000001 ffff88800fc41b40 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, ts 2085771656, free_ts 0 prep_new_page mm/page_alloc.c:2434 [inline] get_page_from_freelist+0xa6f/0x2f10 mm/page_alloc.c:4165 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5389 alloc_page_interleave+0xf/0x1c0 mm/mempolicy.c:2116 alloc_slab_page mm/slub.c:1799 [inline] allocate_slab mm/slub.c:1944 [inline] new_slab+0x28a/0x3b0 mm/slub.c:2004 ___slab_alloc+0x87e/0xe80 mm/slub.c:3018 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3105 slab_alloc_node mm/slub.c:3196 [inline] slab_alloc mm/slub.c:3238 [inline] __kmalloc_track_caller+0x2e7/0x320 mm/slub.c:4926 __do_krealloc mm/slab_common.c:1184 [inline] krealloc+0x87/0xf0 mm/slab_common.c:1217 add_sysfs_param+0xaf/0x900 kernel/params.c:651 kernel_add_sysfs_param kernel/params.c:812 [inline] param_sysfs_builtin kernel/params.c:851 [inline] param_sysfs_init+0x279/0x351 kernel/params.c:970 do_one_initcall+0xbe/0x440 init/main.c:1300 do_initcall_level init/main.c:1373 [inline] do_initcalls init/main.c:1389 [inline] do_basic_setup init/main.c:1408 [inline] kernel_init_freeable+0x5ab/0x605 init/main.c:1613 kernel_init+0x14/0x130 init/main.c:1502 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 page_owner free stack trace missing Memory state around the buggy address: ffff888013da0980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888013da0a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888013da0a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888013da0b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888013da0b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================