====================================== | [ 22.980232][ T11] ================================================================== | [ 22.980510][ T11] BUG: KASAN: slab-use-after-free in cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) | [ 22.980744][ T11] Read of size 8 at addr ffff88800a3600f8 by task kworker/u16:0/11 | [ 22.980955][ T11] [ 22.981243][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 22.981476][ T11] Workqueue: netns cleanup_net [ 22.981630][ T11] Call Trace: [ 22.981747][ T11] [ 22.981825][ T11] dump_stack_lvl (lib/dump_stack.c:123) [ 22.981999][ T11] print_address_description.constprop.0 (mm/kasan/report.c:379) [ 22.982173][ T11] ? cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 22.982311][ T11] print_report (mm/kasan/report.c:490) [ 22.982450][ T11] ? kasan_addr_to_slab (./include/linux/mm.h:1294 mm/kasan/../slab.h:211 mm/kasan/common.c:38) [ 22.982589][ T11] kasan_report (mm/kasan/report.c:604) [ 22.982698][ T11] ? cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 22.982833][ T11] cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 22.982963][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 22.983101][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:592) [ 22.983232][ T11] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 47)) [ 22.983379][ T11] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 22.983507][ T11] ? process_one_work (kernel/workqueue.c:3205) [ 22.983644][ T11] process_one_work (kernel/workqueue.c:3229) [ 22.983784][ T11] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 22.983934][ T11] ? __pfx_process_one_work (kernel/workqueue.c:3131) [ 22.984074][ T11] ? assign_work (kernel/workqueue.c:1200) [ 22.984205][ T11] worker_thread (kernel/workqueue.c:3304 kernel/workqueue.c:3391) [ 22.984342][ T11] ? __pfx_worker_thread (kernel/workqueue.c:3337) [ 22.984476][ T11] kthread (kernel/kthread.c:389) [ 22.984585][ T11] ? __pfx_kthread (kernel/kthread.c:342) [ 22.984727][ T11] ret_from_fork (arch/x86/kernel/process.c:147) [ 22.984861][ T11] ? __pfx_kthread (kernel/kthread.c:342) Finger prints: print_report:kasan_report:cleanup_net:process_one_work:worker_thread