====================================== | [ 418.917995][ T11] ================================================================== | [ 418.918513][ T11] BUG: KASAN: use-after-free in vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4613 drivers/net/vxlan/vxlan_core.c:4636) vxlan | [ 418.919031][ T11] Read of size 8 at addr ffff888006798bd0 by task kworker/u8:0/11 | [ 418.919436][ T11] [ 418.919965][ T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 418.920637][ T11] Workqueue: netns cleanup_net [ 418.920893][ T11] Call Trace: [ 418.921105][ T11] [ 418.921263][ T11] dump_stack_lvl (lib/dump_stack.c:107) [ 418.921500][ T11] print_address_description.constprop.0 (mm/kasan/report.c:378) [ 418.921835][ T11] ? vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4613 drivers/net/vxlan/vxlan_core.c:4636) vxlan [ 418.922159][ T11] print_report (mm/kasan/report.c:489) [ 418.922424][ T11] ? kasan_addr_to_slab (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/page-flags.h:481 mm/kasan/../slab.h:206 mm/kasan/common.c:38) [ 418.922715][ T11] kasan_report (mm/kasan/report.c:603) [ 418.922936][ T11] ? vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4613 drivers/net/vxlan/vxlan_core.c:4636) vxlan [ 418.923303][ T11] vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4613 drivers/net/vxlan/vxlan_core.c:4636) vxlan [ 418.923676][ T11] ? __pfx_vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4631) vxlan [ 418.924025][ T11] ? netconsole_netdev_event (drivers/net/netconsole.c:991) [ 418.924427][ T11] notifier_call_chain (kernel/notifier.c:93) [ 418.924798][ T11] unregister_netdevice_many_notify (net/core/dev.c:11095) [ 418.925286][ T11] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) [ 418.925711][ T11] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) [ 418.926272][ T11] ? vrf_dellink (drivers/net/vrf.c:1708) vrf [ 418.926673][ T11] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) [ 418.927148][ T11] default_device_exit_batch (net/core/dev.c:11629) [ 418.927571][ T11] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) [ 418.928065][ T11] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) [ 418.928469][ T11] ? nexthop_net_exit_batch_rtnl (net/ipv4/nexthop.c:569 net/ipv4/nexthop.c:1918 net/ipv4/nexthop.c:2426 net/ipv4/nexthop.c:3754) [ 418.928957][ T11] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) [ 418.929328][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 418.929812][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 418.930233][ T11] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 418.930650][ T11] ? process_one_work (kernel/workqueue.c:2609) [ 418.931079][ T11] process_one_work (kernel/workqueue.c:2633) [ 418.931475][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 418.931856][ T11] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 418.932291][ T11] ? assign_work (kernel/workqueue.c:1101) [ 418.932681][ T11] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 418.933043][ T11] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 418.933472][ T11] kthread (kernel/kthread.c:388) [ 418.933811][ T11] ? __pfx_kthread (kernel/kthread.c:341) [ 418.934234][ T11] ret_from_fork (arch/x86/kernel/process.c:147) [ 418.934735][ T11] ? __pfx_kthread (kernel/kthread.c:341) Finger prints: dump_stack_lvl:print_report:kasan_report:vxlan_netdevice_event