[ 17.722189][ T327] br1: port 1(vx1) entered blocking state [ 17.722777][ T327] br1: port 1(vx1) entered disabled state [ 17.723286][ T327] vx1: entered allmulticast mode [ 17.733644][ T327] vx1: entered promiscuous mode [ 17.735118][ T327] br1: port 1(vx1) entered blocking state [ 17.735451][ T327] br1: port 1(vx1) entered forwarding state [ 17.841324][ T328] br1: port 2(veth1) entered blocking state [ 17.841677][ T328] br1: port 2(veth1) entered disabled state [ 17.841961][ T328] veth1: entered allmulticast mode [ 17.843944][ T328] veth1: entered promiscuous mode [ 17.936599][ T37] br1: port 2(veth1) entered blocking state [ 17.937077][ T37] br1: port 2(veth1) entered forwarding state [ 18.037862][ T330] br1: port 3(veth2) entered blocking state [ 18.038171][ T330] br1: port 3(veth2) entered disabled state [ 18.038465][ T330] veth2: entered allmulticast mode [ 18.040819][ T330] veth2: entered promiscuous mode [ 18.124897][ T40] br1: port 3(veth2) entered blocking state [ 18.125187][ T40] br1: port 3(veth2) entered forwarding state [ 21.643209][ T376] br2: port 1(w1) entered blocking state [ 21.643525][ T376] br2: port 1(w1) entered disabled state [ 21.643772][ T376] w1: entered allmulticast mode [ 21.645746][ T376] w1: entered promiscuous mode [ 22.141730][ T382] br2: port 2(vx2) entered blocking state [ 22.142024][ T382] br2: port 2(vx2) entered disabled state [ 22.142286][ T382] vx2: entered allmulticast mode [ 22.144268][ T382] vx2: entered promiscuous mode [ 22.145157][ T382] br2: port 2(vx2) entered blocking state [ 22.145387][ T382] br2: port 2(vx2) entered forwarding state [ 22.781188][ T123] br2: port 1(w1) entered blocking state [ 22.781626][ T123] br2: port 1(w1) entered forwarding state [ 24.185873][ T410] ip (410) used greatest stack depth: 24384 bytes left [ 24.426477][ T413] br2: port 1(w1) entered blocking state [ 24.426761][ T413] br2: port 1(w1) entered disabled state [ 24.427024][ T413] w1: entered allmulticast mode [ 24.429018][ T413] w1: entered promiscuous mode [ 24.954547][ T419] br2: port 2(vx2) entered blocking state [ 24.954849][ T419] br2: port 2(vx2) entered disabled state [ 24.955110][ T419] vx2: entered allmulticast mode [ 24.957094][ T419] vx2: entered promiscuous mode [ 24.958031][ T419] br2: port 2(vx2) entered blocking state [ 24.958261][ T419] br2: port 2(vx2) entered forwarding state [ 25.599063][ T37] br2: port 1(w1) entered blocking state [ 25.599387][ T37] br2: port 1(w1) entered forwarding state [ 37.570657][ T510] GACT probability NOT on [ 48.057603][ T680] veth3: entered promiscuous mode [ 80.067344][ T1169] veth3: left promiscuous mode [ 104.466516][ C2] vxlan: non-ECT from 192.0.2.34 with TOS=0x1 [ 104.568146][ C2] vxlan: non-ECT from 192.0.2.34 with TOS=0x1 [ 104.669033][ C2] vxlan: non-ECT from 192.0.2.34 with TOS=0x1 [ 104.769920][ C2] vxlan: non-ECT from 192.0.2.34 with TOS=0x1 [ 104.870870][ C2] vxlan: non-ECT from 192.0.2.34 with TOS=0x1 [ 104.972157][ C2] vxlan: non-ECT from 192.0.2.34 with TOS=0x1 [ 105.073293][ C2] vxlan: non-ECT from 192.0.2.34 with TOS=0x1 [ 105.174236][ C2] vxlan: non-ECT from 192.0.2.34 with TOS=0x1 [ 105.275198][ C2] vxlan: non-ECT from 192.0.2.34 with TOS=0x1 [ 105.376167][ C2] vxlan: non-ECT from 192.0.2.34 with TOS=0x1 [ 158.986733][ C0] net_ratelimit: 10 callbacks suppressed [ 158.986744][ C0] vxlan: non-ECT from 192.0.2.34 with TOS=0x3 [ 159.088560][ C0] vxlan: non-ECT from 192.0.2.34 with TOS=0x3 [ 159.189488][ C0] vxlan: non-ECT from 192.0.2.34 with TOS=0x3 [ 159.290637][ C0] vxlan: non-ECT from 192.0.2.34 with TOS=0x3 [ 159.391730][ C0] vxlan: non-ECT from 192.0.2.34 with TOS=0x3 [ 159.492867][ C0] vxlan: non-ECT from 192.0.2.34 with TOS=0x3 [ 159.594033][ C0] vxlan: non-ECT from 192.0.2.34 with TOS=0x3 [ 159.694957][ C0] vxlan: non-ECT from 192.0.2.34 with TOS=0x3 [ 159.795891][ C0] vxlan: non-ECT from 192.0.2.34 with TOS=0x3 [ 159.896781][ C0] vxlan: non-ECT from 192.0.2.34 with TOS=0x3 [ 160.763529][ T2285] vx1: left allmulticast mode [ 160.763819][ T2285] vx1: left promiscuous mode [ 160.764167][ T2285] br1: port 1(vx1) entered disabled state [ 165.941267][ T2287] br1: port 1(vx1) entered blocking state [ 165.941633][ T2287] br1: port 1(vx1) entered disabled state [ 165.941912][ T2287] vx1: entered allmulticast mode [ 165.943959][ T2287] vx1: entered promiscuous mode [ 165.944928][ T2287] br1: port 1(vx1) entered blocking state [ 165.945196][ T2287] br1: port 1(vx1) entered forwarding state [ 187.171634][ T2495] veth3: entered promiscuous mode [ 219.097360][ T2984] veth3: left promiscuous mode [ 220.573498][ T3006] vx1: left allmulticast mode [ 220.573892][ T3006] vx1: left promiscuous mode [ 220.574613][ T3006] br1: port 1(vx1) entered disabled state [ 225.727398][ T3008] br1: port 1(vx1) entered blocking state [ 225.727758][ T3008] br1: port 1(vx1) entered disabled state [ 225.728052][ T3008] vx1: entered allmulticast mode [ 225.730172][ T3008] vx1: entered promiscuous mode [ 225.731150][ T3008] br1: port 1(vx1) entered blocking state [ 225.731440][ T3008] br1: port 1(vx1) entered forwarding state [ 357.001324][ T3919] vx1: left allmulticast mode [ 357.001833][ T3919] vx1: left promiscuous mode [ 357.002248][ T3919] br1: port 1(vx1) entered disabled state [ 362.148392][ T3921] br1: port 1(vx1) entered blocking state [ 362.148998][ T3921] br1: port 1(vx1) entered disabled state [ 362.149237][ T3921] vx1: entered allmulticast mode [ 362.151235][ T3921] vx1: entered promiscuous mode [ 362.152106][ T3921] br1: port 1(vx1) entered blocking state [ 362.152318][ T3921] br1: port 1(vx1) entered forwarding state [ 369.359794][ T66] vx2: left allmulticast mode [ 369.360223][ T66] vx2: left promiscuous mode [ 369.360661][ T66] br2: port 2(vx2) entered disabled state [ 369.365157][ T66] w1: left allmulticast mode [ 369.365469][ T66] w1: left promiscuous mode [ 369.365933][ T66] br2: port 1(w1) entered disabled state [ 369.870560][ T66] vx2: left allmulticast mode [ 369.870956][ T66] vx2: left promiscuous mode [ 369.871507][ T66] br2: port 2(vx2) entered disabled state [ 369.875178][ T66] w1: left allmulticast mode [ 369.876079][ T66] w1: left promiscuous mode [ 369.876634][ T66] br2: port 1(w1) entered disabled state [ 370.192862][ T66] ================================================================== [ 370.193180][ T66] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 370.193466][ T66] Read of size 8 at addr ffff888011071a38 by task kworker/u16:1/66 [ 370.193670][ T66] [ 370.193744][ T66] CPU: 1 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 370.193939][ T66] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 370.194111][ T66] Workqueue: netns cleanup_net [ 370.194255][ T66] Call Trace: [ 370.194397][ T66] [ 370.194492][ T66] dump_stack_lvl+0x82/0xd0 [ 370.194674][ T66] print_address_description.constprop.0+0x2c/0x3b0 [ 370.194842][ T66] ? cleanup_net+0x932/0xa40 [ 370.195011][ T66] print_report+0xb4/0x270 [ 370.195143][ T66] ? kasan_addr_to_slab+0x25/0x80 [ 370.195275][ T66] kasan_report+0xbd/0xf0 [ 370.195430][ T66] ? cleanup_net+0x932/0xa40 [ 370.195654][ T66] cleanup_net+0x932/0xa40 [ 370.195815][ T66] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 370.195951][ T66] ? __pfx_cleanup_net+0x10/0x10 [ 370.196124][ T66] ? trace_lock_acquire+0x148/0x1f0 [ 370.196260][ T66] ? lock_acquire+0x32/0xc0 [ 370.196392][ T66] ? process_one_work+0xe0b/0x16d0 [ 370.196527][ T66] process_one_work+0xe55/0x16d0 [ 370.196683][ T66] ? __pfx___lock_release+0x10/0x10 [ 370.196849][ T66] ? __pfx_process_one_work+0x10/0x10 [ 370.196978][ T66] ? assign_work+0x16c/0x240 [ 370.197125][ T66] worker_thread+0x58c/0xce0 [ 370.197259][ T66] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 370.197435][ T66] ? __pfx_worker_thread+0x10/0x10 [ 370.197565][ T66] ? __pfx_worker_thread+0x10/0x10 [ 370.197718][ T66] kthread+0x28a/0x350 [ 370.197849][ T66] ? __pfx_kthread+0x10/0x10 [ 370.197981][ T66] ret_from_fork+0x31/0x70 [ 370.198112][ T66] ? __pfx_kthread+0x10/0x10 [ 370.198252][ T66] ret_from_fork_asm+0x1a/0x30 [ 370.198384][ T66] [ 370.198482][ T66] [ 370.198547][ T66] Allocated by task 393: [ 370.198660][ T66] kasan_save_stack+0x24/0x50 [ 370.198803][ T66] kasan_save_track+0x14/0x30 [ 370.198928][ T66] __kasan_slab_alloc+0x59/0x70 [ 370.199082][ T66] kmem_cache_alloc_noprof+0x10b/0x350 [ 370.199241][ T66] copy_net_ns+0xc6/0x340 [ 370.199383][ T66] create_new_namespaces+0x35f/0x920 [ 370.199515][ T66] unshare_nsproxy_namespaces+0x8d/0x130 [ 370.199640][ T66] ksys_unshare+0x2a9/0x660 [ 370.199780][ T66] __x64_sys_unshare+0x31/0x40 [ 370.199911][ T66] do_syscall_64+0xc1/0x1d0 [ 370.200050][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 370.200208][ T66] [ 370.200312][ T66] Freed by task 66: [ 370.200442][ T66] kasan_save_stack+0x24/0x50 [ 370.200581][ T66] kasan_save_track+0x14/0x30 [ 370.200708][ T66] kasan_save_free_info+0x3b/0x60 [ 370.200834][ T66] __kasan_slab_free+0x38/0x50 [ 370.200996][ T66] kmem_cache_free+0xf8/0x330 [ 370.201139][ T66] cleanup_net+0x5a8/0xa40 [ 370.201304][ T66] process_one_work+0xe55/0x16d0 [ 370.201474][ T66] worker_thread+0x58c/0xce0 [ 370.201602][ T66] kthread+0x28a/0x350 [ 370.201700][ T66] ret_from_fork+0x31/0x70 [ 370.201860][ T66] ret_from_fork_asm+0x1a/0x30 [ 370.202007][ T66] [ 370.202075][ T66] Last potentially related work creation: [ 370.202217][ T66] kasan_save_stack+0x24/0x50 [ 370.202395][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 370.202526][ T66] insert_work+0x34/0x230 [ 370.202626][ T66] __queue_work+0x5fd/0xa40 [ 370.202794][ T66] call_timer_fn+0x13b/0x230 [ 370.202927][ T66] __run_timers+0x3ff/0x810 [ 370.203058][ T66] run_timer_softirq+0x154/0x1c0 [ 370.203200][ T66] handle_softirqs+0x1f6/0x5c0 [ 370.203386][ T66] __irq_exit_rcu+0xc4/0x100 [ 370.203521][ T66] irq_exit_rcu+0xe/0x20 [ 370.203617][ T66] sysvec_apic_timer_interrupt+0x78/0x90 [ 370.203751][ T66] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 370.203975][ T66] [ 370.204047][ T66] Second to last potentially related work creation: [ 370.204206][ T66] kasan_save_stack+0x24/0x50 [ 370.204415][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 370.204564][ T66] insert_work+0x34/0x230 [ 370.204681][ T66] __queue_work+0x5fd/0xa40 [ 370.204819][ T66] call_timer_fn+0x13b/0x230 [ 370.204949][ T66] __run_timers+0x3ff/0x810 [ 370.205116][ T66] run_timer_softirq+0x154/0x1c0 [ 370.205246][ T66] handle_softirqs+0x1f6/0x5c0 [ 370.205398][ T66] __irq_exit_rcu+0xc4/0x100 [ 370.205529][ T66] irq_exit_rcu+0xe/0x20 [ 370.205663][ T66] sysvec_apic_timer_interrupt+0x78/0x90 [ 370.205794][ T66] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 370.205953][ T66] [ 370.206022][ T66] The buggy address belongs to the object at ffff888011071980 [ 370.206022][ T66] which belongs to the cache net_namespace of size 6080 [ 370.206428][ T66] The buggy address is located 184 bytes inside of [ 370.206428][ T66] freed 6080-byte region [ffff888011071980, ffff888011073140) [ 370.206735][ T66] [ 370.206801][ T66] The buggy address belongs to the physical page: [ 370.206985][ T66] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880110732c0 pfn:0x11070 [ 370.207276][ T66] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 370.207509][ T66] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 370.207709][ T66] page_type: f5(slab) [ 370.207824][ T66] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 370.208055][ T66] raw: ffff8880110732c0 0000000000050002 00000001f5000000 0000000000000000 [ 370.208323][ T66] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 370.208570][ T66] head: ffff8880110732c0 0000000000050002 00000001f5000000 0000000000000000 [ 370.208834][ T66] head: 0080000000000003 ffffea0000441c01 ffffffffffffffff 0000000000000000 [ 370.209105][ T66] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 370.209349][ T66] page dumped because: kasan: bad access detected [ 370.209551][ T66] [ 370.209622][ T66] Memory state around the buggy address: [ 370.209787][ T66] ffff888011071900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 370.210084][ T66] ffff888011071980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 370.210356][ T66] >ffff888011071a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 370.210581][ T66] ^ [ 370.210760][ T66] ffff888011071a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 370.210939][ T66] ffff888011071b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 370.211117][ T66] ================================================================== [ 370.211351][ T66] Disabling lock debugging due to kernel taint [ 371.998785][ T3966] vx1: left allmulticast mode [ 371.999035][ T3966] vx1: left promiscuous mode [ 371.999348][ T3966] br1: port 1(vx1) entered disabled state [ 372.292261][ T3969] br1: port 3(veth2) entered disabled state [ 372.369724][ T3970] veth2: left allmulticast mode [ 372.369996][ T3970] veth2: left promiscuous mode [ 372.370321][ T3970] br1: port 3(veth2) entered disabled state [ 372.459327][ T3971] br1: port 2(veth1) entered disabled state [ 372.543507][ T3972] veth1: left allmulticast mode [ 372.543857][ T3972] veth1: left promiscuous mode [ 372.544241][ T3972] br1: port 2(veth1) entered disabled state