================================================================== BUG: KASAN: slab-out-of-bounds in ieee80211_monitor_select_queue+0x210/0x214 net/mac80211/iface.c:915 Read of size 2 at addr ffff0000d7d2adfb by task syz.0.661/6773 CPU: 0 PID: 6773 Comm: syz.0.661 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026 Call trace: dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106 print_address_description+0x88/0x218 mm/kasan/report.c:316 print_report+0x50/0x68 mm/kasan/report.c:420 kasan_report+0xa8/0xfc mm/kasan/report.c:524 __asan_report_load2_noabort+0x2c/0x38 mm/kasan/report_generic.c:349 ieee80211_monitor_select_queue+0x210/0x214 net/mac80211/iface.c:915 netdev_core_pick_tx+0x130/0x320 net/core/dev.c:4245 __dev_queue_xmit+0x730/0x3154 net/core/dev.c:4331 dev_queue_xmit+0x24/0x34 include/linux/netdevice.h:3053 packet_snd net/packet/af_packet.c:3160 [inline] packet_sendmsg+0x2de8/0x3d64 net/packet/af_packet.c:3191 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x588/0x90c net/socket.c:2519 ___sys_sendmsg net/socket.c:2573 [inline] __sys_sendmsg+0x288/0x374 net/socket.c:2602 __do_sys_sendmsg net/socket.c:2611 [inline] __se_sys_sendmsg net/socket.c:2609 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2609 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 4339: kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:53 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:375 [inline] __kasan_kmalloc+0xa0/0xb8 mm/kasan/common.c:384 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:936 [inline] __kmalloc_node_track_caller+0xcc/0x174 mm/slab_common.c:956 kmemdup+0x5c/0x98 mm/util.c:129 kmemdup include/linux/fortify-string.h:585 [inline] __devinet_sysctl_register+0xc0/0xdac net/ipv4/devinet.c:2600 devinet_sysctl_register+0x14c/0x1c0 net/ipv4/devinet.c:2652 inetdev_init+0x268/0x4a0 net/ipv4/devinet.c:280 inetdev_event+0xef4/0x12dc net/ipv4/devinet.c:1547 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0xd8/0x168 kernel/notifier.c:455 call_netdevice_notifiers_info net/core/dev.c:2014 [inline] call_netdevice_notifiers_extack net/core/dev.c:2052 [inline] call_netdevice_notifiers+0x110/0x198 net/core/dev.c:2066 register_netdevice+0x11c4/0x1650 net/core/dev.c:10276 __ip_tunnel_create+0x2a8/0x3b4 net/ipv4/ip_tunnel.c:267 ip_tunnel_init_net+0x23c/0x638 net/ipv4/ip_tunnel.c:1104 ipip_init_net+0x38/0x48 net/ipv4/ipip.c:595 ops_init+0x2b0/0x53c net/core/net_namespace.c:138 setup_net+0x494/0xb6c net/core/net_namespace.c:336 copy_net_ns+0x2b8/0x578 net/core/net_namespace.c:508 create_new_namespaces+0x30c/0x604 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x108/0x160 kernel/nsproxy.c:226 ksys_unshare+0x3f0/0x70c kernel/fork.c:3285 __do_sys_unshare kernel/fork.c:3359 [inline] __se_sys_unshare kernel/fork.c:3357 [inline] __arm64_sys_unshare+0x3c/0x50 kernel/fork.c:3357 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the object at ffff0000d7d2a000 which belongs to the cache kmalloc-cg-4k of size 4096 The buggy address is located 3579 bytes inside of 4096-byte region [ffff0000d7d2a000, ffff0000d7d2b000) The buggy address belongs to the physical page: page:0000000044e431fc refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x117d28 head:0000000044e431fc order:3 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0003500 raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000d7d2ac80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000d7d2ad00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000d7d2ad80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000d7d2ae00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000d7d2ae80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================