====================================== | [ 29.313507][ T11] ================================================================== | [ 29.313790][ T11] BUG: KASAN: slab-use-after-free in cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) | [ 29.313980][ T11] Read of size 8 at addr ffff88800a031c38 by task kworker/u16:0/11 | [ 29.314166][ T11] [ 29.314423][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 29.314580][ T11] Workqueue: netns cleanup_net [ 29.314713][ T11] Call Trace: [ 29.314811][ T11] [ 29.314876][ T11] dump_stack_lvl (lib/dump_stack.c:123) [ 29.315006][ T11] print_address_description.constprop.0 (mm/kasan/report.c:379) [ 29.315165][ T11] ? cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 29.315294][ T11] print_report (mm/kasan/report.c:490) [ 29.315418][ T11] ? kasan_addr_to_slab (./include/linux/mm.h:1294 mm/kasan/../slab.h:211 mm/kasan/common.c:38) [ 29.315544][ T11] kasan_report (mm/kasan/report.c:604) [ 29.315640][ T11] ? cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 29.315767][ T11] cleanup_net (net/core/net_namespace.c:462 net/core/net_namespace.c:661) [ 29.315895][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 29.316023][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:592) [ 29.316155][ T11] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 47)) [ 29.316284][ T11] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 29.316407][ T11] ? process_one_work (kernel/workqueue.c:3205) [ 29.316538][ T11] process_one_work (kernel/workqueue.c:3229) [ 29.316663][ T11] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 29.316791][ T11] ? __pfx_process_one_work (kernel/workqueue.c:3131) [ 29.316918][ T11] ? assign_work (kernel/workqueue.c:1200) [ 29.317043][ T11] worker_thread (kernel/workqueue.c:3304 kernel/workqueue.c:3391) [ 29.317171][ T11] ? __pfx_worker_thread (kernel/workqueue.c:3337) [ 29.317295][ T11] kthread (kernel/kthread.c:389) [ 29.317391][ T11] ? __pfx_kthread (kernel/kthread.c:342) [ 29.317529][ T11] ret_from_fork (arch/x86/kernel/process.c:147) [ 29.317653][ T11] ? __pfx_kthread (kernel/kthread.c:342) Finger prints: print_report:kasan_report:cleanup_net:process_one_work:worker_thread