====================================== | xx__-> [ 24.529735][ T67] ================================================================== | [ 24.529962][ T67] BUG: KASAN: slab-use-after-free in cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) | [ 24.530163][ T67] Read of size 8 at addr ffff88800bc800f8 by task kworker/u16:1/67 | [ 24.530350][ T67] [ 24.530609][ T67] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 24.530768][ T67] Workqueue: netns cleanup_net [ 24.530900][ T67] Call Trace: [ 24.530996][ T67] [ 24.531063][ T67] dump_stack_lvl (lib/dump_stack.c:123) [ 24.531197][ T67] print_address_description.constprop.0 (mm/kasan/report.c:379) [ 24.531355][ T67] ? cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 24.531482][ T67] print_report (mm/kasan/report.c:490) [ 24.531611][ T67] ? kasan_addr_to_slab (./include/linux/mm.h:1294 mm/kasan/../slab.h:211 mm/kasan/common.c:38) [ 24.531736][ T67] kasan_report (mm/kasan/report.c:604) [ 24.531841][ T67] ? cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 24.531972][ T67] cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 24.532098][ T67] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 24.532233][ T67] ? __pfx_cleanup_net (net/core/net_namespace.c:592) [ 24.532353][ T67] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 47)) [ 24.532479][ T67] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 24.532607][ T67] ? process_one_work (kernel/workqueue.c:3205) [ 24.532741][ T67] process_one_work (kernel/workqueue.c:3229) [ 24.532866][ T67] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 24.532991][ T67] ? __pfx_process_one_work (kernel/workqueue.c:3131) [ 24.533123][ T67] ? assign_work (kernel/workqueue.c:1200) [ 24.533249][ T67] worker_thread (kernel/workqueue.c:3304 kernel/workqueue.c:3391) [ 24.533370][ T67] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 24.533521][ T67] ? __pfx_worker_thread (kernel/workqueue.c:3337) [ 24.533648][ T67] ? __pfx_worker_thread (kernel/workqueue.c:3337) [ 24.533776][ T67] kthread (kernel/kthread.c:389) [ 24.533877][ T67] ? __pfx_kthread (kernel/kthread.c:342) [ 24.534000][ T67] ret_from_fork (arch/x86/kernel/process.c:147) [ 24.534121][ T67] ? __pfx_kthread (kernel/kthread.c:342) Finger prints: print_report:kasan_report:cleanup_net:process_one_work:worker_thread