KASAN: use-after-free Read in qfq_reset

Kernel	Title	Count	Last	Reported	Patched	Status
upstream	general protection fault in qfq_reset_qdisc net	5	850d	922d	0/28	auto-obsoleted due to no activity on 2022/11/11 06:00
linux-4.19	KASAN: use-after-free Read in qfq_reset_qdisc	2	1768d	1778d	0/1	auto-closed as invalid on 2020/06/06 11:35
linux-4.14	KASAN: use-after-free Read in qfq_reset_qdisc	6	1561d	1874d	0/1	auto-closed as invalid on 2020/12/30 04:03
linux-4.19	KASAN: use-after-free Read in qfq_reset_qdisc (2)	1	1596d	1596d	0/1	auto-closed as invalid on 2020/11/25 14:56
linux-4.19	KASAN: use-after-free Read in qfq_reset_qdisc (3)	1	1465d	1465d	0/1	auto-closed as invalid on 2021/04/05 19:15
linux-4.14	general protection fault in qfq_reset_qdisc (2)	2	1353d	1430d	0/1	auto-closed as invalid on 2021/07/26 19:48
upstream	KASAN: slab-use-after-free Read in qfq_reset_qdisc net	3	499d	541d	0/28	closed as invalid on 2023/09/21 09:36
upstream	general protection fault in qfq_reset_qdisc (3) net	2	295d	346d	0/28	closed as invalid on 2024/03/12 16:19
upstream	general protection fault in qfq_reset_qdisc (2) net	1	422d	422d	0/28	closed as invalid on 2023/12/05 18:14

bridge0: port 1(bridge_slave_0) entered disabled state device veth1_vlan left promiscuous mode ================================================================== BUG: KASAN: use-after-free in qfq_reset_qdisc+0x3b2/0x4d0 net/sched/sch_qfq.c:1455 Read of size 8 at addr ffff8880238dd450 by task kworker/u4:16/1252 CPU: 1 PID: 1252 Comm: kworker/u4:16 Not tainted 5.16.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x8d/0x320 mm/kasan/report.c:255 __kasan_report mm/kasan/report.c:442 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:459 qfq_reset_qdisc+0x3b2/0x4d0 net/sched/sch_qfq.c:1455 qdisc_reset+0xdb/0x730 net/sched/sch_generic.c:1027 qdisc_destroy+0x91/0x4f0 net/sched/sch_generic.c:1072 qdisc_put+0xcd/0xe0 net/sched/sch_generic.c:1094 dev_shutdown+0x298/0x4a0 net/sched/sch_generic.c:1478 unregister_netdevice_many+0x816/0x1850 net/core/dev.c:10402 default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:10939 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:595 process_one_work+0x9b2/0x1660 kernel/workqueue.c:2298 worker_thread+0x65d/0x1130 kernel/workqueue.c:2445 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> Allocated by task 19658: kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:437 [inline] ____kasan_kmalloc mm/kasan/common.c:516 [inline] ____kasan_kmalloc mm/kasan/common.c:475 [inline] __kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:525 kmalloc include/linux/slab.h:582 [inline] __hw_addr_create net/core/dev_addr_lists.c:58 [inline] __hw_addr_add_ex+0x22d/0x7e0 net/core/dev_addr_lists.c:116 __hw_addr_add net/core/dev_addr_lists.c:133 [inline] dev_addr_init+0x13a/0x220 net/core/dev_addr_lists.c:556 alloc_netdev_mqs+0x27b/0x1060 net/core/dev.c:10174 __ip_tunnel_create+0x201/0x5c0 net/ipv4/ip_tunnel.c:254 ip_tunnel_init_net+0x2e4/0x9d0 net/ipv4/ip_tunnel.c:1070 ops_init+0xaf/0x470 net/core/net_namespace.c:140 setup_net+0x54f/0xbb0 net/core/net_namespace.c:328 copy_net_ns+0x318/0x760 net/core/net_namespace.c:472 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226 ksys_unshare+0x445/0x920 kernel/fork.c:3075 __do_sys_unshare kernel/fork.c:3146 [inline] __se_sys_unshare kernel/fork.c:3144 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3144 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Freed by task 1252: kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 kasan_set_track+0x21/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370 ____kasan_slab_free mm/kasan/common.c:367 [inline] ____kasan_slab_free+0x130/0x160 mm/kasan/common.c:329 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 mpls_dev_sysctl_unregister net/mpls/af_mpls.c:1442 [inline] mpls_dev_notify+0x503/0x8a0 net/mpls/af_mpls.c:1654 notifier_call_chain+0xb5/0x200 kernel/notifier.c:84 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1919 call_netdevice_notifiers_extack net/core/dev.c:1931 [inline] call_netdevice_notifiers net/core/dev.c:1945 [inline] unregister_netdevice_many+0x964/0x1850 net/core/dev.c:10409 default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:10939 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:595 process_one_work+0x9b2/0x1660 kernel/workqueue.c:2298 worker_thread+0x65d/0x1130 kernel/workqueue.c:2445 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Last potentially related work creation: kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 __kasan_record_aux_stack+0xbe/0xd0 mm/kasan/generic.c:348 kvfree_call_rcu+0x74/0x990 kernel/rcu/tree.c:3550 __hw_addr_flush+0x152/0x240 net/core/dev_addr_lists.c:488 dev_addr_flush+0x1d/0x50 net/core/dev_addr_lists.c:533 free_netdev+0x1f5/0x5b0 net/core/dev.c:10277 netdev_run_todo+0x8a0/0xaa0 net/core/dev.c:9958 ip_tunnel_delete_nets+0x3a4/0x5b0 net/ipv4/ip_tunnel.c:1124 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171 setup_net+0x779/0xbb0 net/core/net_namespace.c:351 copy_net_ns+0x318/0x760 net/core/net_namespace.c:472 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226 ksys_unshare+0x445/0x920 kernel/fork.c:3075 __do_sys_unshare kernel/fork.c:3146 [inline] __se_sys_unshare kernel/fork.c:3144 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3144 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Second to last potentially related work creation: kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 __kasan_record_aux_stack+0xbe/0xd0 mm/kasan/generic.c:348 kvfree_call_rcu+0x74/0x990 kernel/rcu/tree.c:3550 __hw_addr_flush+0x152/0x240 net/core/dev_addr_lists.c:488 dev_addr_flush+0x1d/0x50 net/core/dev_addr_lists.c:533 free_netdev+0x1f5/0x5b0 net/core/dev.c:10277 netdev_run_todo+0x8a0/0xaa0 net/core/dev.c:9958 ip_tunnel_delete_nets+0x3a4/0x5b0 net/ipv4/ip_tunnel.c:1124 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171 setup_net+0x779/0xbb0 net/core/net_namespace.c:351 copy_net_ns+0x318/0x760 net/core/net_namespace.c:472 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226 ksys_unshare+0x445/0x920 kernel/fork.c:3075 __do_sys_unshare kernel/fork.c:3146 [inline] __se_sys_unshare kernel/fork.c:3144 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3144 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae The buggy address belongs to the object at ffff8880238dd400 which belongs to the cache kmalloc-128 of size 128 The buggy address is located 80 bytes inside of 128-byte region [ffff8880238dd400, ffff8880238dd480) The buggy address belongs to the page: page:ffffea00008e3740 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x238dd flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea0001e30540 dead000000000002 ffff888010c418c0 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 13152, ts 1335550032796, free_ts 1335501289831 prep_new_page mm/page_alloc.c:2418 [inline] get_page_from_freelist+0xa72/0x2f50 mm/page_alloc.c:4149 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5369 __alloc_pages_node include/linux/gfp.h:570 [inline] alloc_slab_page mm/slub.c:1801 [inline] allocate_slab mm/slub.c:1944 [inline] new_slab+0xab/0x3b0 mm/slub.c:2004 ___slab_alloc+0x87c/0xe90 mm/slub.c:3018 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3105 slab_alloc_node mm/slub.c:3196 [inline] __kmalloc_node+0x2cb/0x390 mm/slub.c:4468 kmalloc_array_node include/linux/slab.h:678 [inline] kcalloc_node include/linux/slab.h:683 [inline] memcg_alloc_slab_cgroups+0x8b/0x140 mm/memcontrol.c:2827 account_slab mm/slab.h:642 [inline] allocate_slab mm/slub.c:1960 [inline] new_slab+0x2ee/0x3b0 mm/slub.c:2004 ___slab_alloc+0x87c/0xe90 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] kmem_cache_alloc+0x35c/0x3a0 mm/slub.c:3243 vm_area_alloc+0x1c/0x110 kernel/fork.c:348 mmap_region+0xa98/0x1630 mm/mmap.c:1766 do_mmap+0x869/0xfb0 mm/mmap.c:1575 vm_mmap_pgoff+0x1b7/0x290 mm/util.c:519 ksys_mmap_pgoff+0x40d/0x5a0 mm/mmap.c:1623 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1338 [inline] free_pcp_prepare+0x374/0x870 mm/page_alloc.c:1389 free_unref_page_prepare mm/page_alloc.c:3309 [inline] free_unref_page+0x19/0x690 mm/page_alloc.c:3388 __vunmap+0x781/0xb70 mm/vmalloc.c:2632 free_work+0x58/0x70 mm/vmalloc.c:95 process_one_work+0x9b2/0x1660 kernel/workqueue.c:2298 worker_thread+0x65d/0x1130 kernel/workqueue.c:2445 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Memory state around the buggy address: ffff8880238dd300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880238dd380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8880238dd400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880238dd480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880238dd500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================