====================================== | [ 63.613895][ T272] ================================================================== | [ 63.614357][ T272] BUG: KASAN: slab-use-after-free in cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) | [ 63.614623][ T272] Read of size 8 at addr ffff8880099f00f8 by task kworker/u16:2/272 | [ 63.614892][ T272] [ 63.615323][ T272] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 63.615674][ T272] Workqueue: netns cleanup_net [ 63.615970][ T272] Call Trace: [ 63.616145][ T272] [ 63.616280][ T272] dump_stack_lvl (lib/dump_stack.c:123) [ 63.616576][ T272] print_address_description.constprop.0 (mm/kasan/report.c:379) [ 63.616928][ T272] ? cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 63.617192][ T272] print_report (mm/kasan/report.c:490) [ 63.617488][ T272] ? kasan_addr_to_slab (./include/linux/mm.h:1294 mm/kasan/../slab.h:211 mm/kasan/common.c:38) [ 63.617738][ T272] kasan_report (mm/kasan/report.c:604) [ 63.617928][ T272] ? cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 63.618199][ T272] cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 63.618467][ T272] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 63.618723][ T272] ? __pfx_cleanup_net (net/core/net_namespace.c:592) [ 63.618982][ T272] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 47)) [ 63.619187][ T272] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 63.619394][ T272] ? process_one_work (kernel/workqueue.c:3205) [ 63.619586][ T272] process_one_work (kernel/workqueue.c:3229) [ 63.619808][ T272] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 63.620021][ T272] ? __pfx_process_one_work (kernel/workqueue.c:3131) [ 63.620228][ T272] ? assign_work (kernel/workqueue.c:1200) [ 63.620443][ T272] worker_thread (kernel/workqueue.c:3304 kernel/workqueue.c:3391) [ 63.620657][ T272] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 63.620928][ T272] ? __pfx_worker_thread (kernel/workqueue.c:3337) [ 63.621134][ T272] ? __pfx_worker_thread (kernel/workqueue.c:3337) [ 63.621340][ T272] kthread (kernel/kthread.c:389) [ 63.621496][ T272] ? __pfx_kthread (kernel/kthread.c:342) [ 63.621708][ T272] ret_from_fork (arch/x86/kernel/process.c:147) [ 63.621917][ T272] ? __pfx_kthread (kernel/kthread.c:342) Finger prints: print_report:kasan_report:cleanup_net:process_one_work:worker_thread