====================================== | [ 754.295992][ T11] ================================================================== | [ 754.296227][ T11] BUG: KASAN: slab-use-after-free in cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) | [ 754.296430][ T11] Read of size 8 at addr ffff88800a2900f8 by task kworker/u16:0/11 | [ 754.296620][ T11] [ 754.296879][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 754.297044][ T11] Workqueue: netns cleanup_net [ 754.297232][ T11] Call Trace: [ 754.297370][ T11] [ 754.297465][ T11] dump_stack_lvl (lib/dump_stack.c:123) [ 754.297652][ T11] print_address_description.constprop.0 (mm/kasan/report.c:379) [ 754.297902][ T11] ? cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 754.298097][ T11] print_report (mm/kasan/report.c:490) [ 754.298285][ T11] ? kasan_addr_to_slab (./include/linux/mm.h:1294 mm/kasan/../slab.h:211 mm/kasan/common.c:38) [ 754.298484][ T11] kasan_report (mm/kasan/report.c:604) [ 754.298644][ T11] ? cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 754.298840][ T11] cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 754.299037][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 754.299244][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:592) [ 754.299433][ T11] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 47)) [ 754.299637][ T11] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 754.299835][ T11] ? process_one_work (kernel/workqueue.c:3205) [ 754.300035][ T11] process_one_work (kernel/workqueue.c:3229) [ 754.300235][ T11] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 754.300430][ T11] ? __pfx_process_one_work (kernel/workqueue.c:3131) [ 754.300629][ T11] ? assign_work (kernel/workqueue.c:1200) [ 754.300825][ T11] worker_thread (kernel/workqueue.c:3304 kernel/workqueue.c:3391) [ 754.301026][ T11] ? __pfx_worker_thread (kernel/workqueue.c:3337) [ 754.301228][ T11] kthread (kernel/kthread.c:389) [ 754.301384][ T11] ? __pfx_kthread (kernel/kthread.c:342) [ 754.301583][ T11] ret_from_fork (arch/x86/kernel/process.c:147) [ 754.301788][ T11] ? __pfx_kthread (kernel/kthread.c:342) Finger prints: print_report:kasan_report:cleanup_net:process_one_work:worker_thread