Bluetooth: Unknown BR/EDR signaling command 0x10 Bluetooth: Wrong link type (-22) Bluetooth: Unknown BR/EDR signaling command 0x0e Bluetooth: Wrong link type (-22) ================================================================== BUG: KASAN: slab-use-after-free in l2cap_build_cmd net/bluetooth/l2cap_core.c:2951 [inline] BUG: KASAN: slab-use-after-free in l2cap_send_cmd+0x67b/0x8d0 net/bluetooth/l2cap_core.c:954 Read of size 4 at addr ffff888065372810 by task kworker/u9:5/5234 CPU: 0 UID: 0 PID: 5234 Comm: kworker/u9:5 Not tainted 6.11.0-syzkaller-05591-g2a17bb8c204f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: hci1 hci_rx_work Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 l2cap_build_cmd net/bluetooth/l2cap_core.c:2951 [inline] l2cap_send_cmd+0x67b/0x8d0 net/bluetooth/l2cap_core.c:954 l2cap_sig_send_rej net/bluetooth/l2cap_core.c:5510 [inline] l2cap_sig_channel net/bluetooth/l2cap_core.c:5546 [inline] l2cap_recv_frame+0x22f1/0x10850 net/bluetooth/l2cap_core.c:6825 hci_acldata_packet net/bluetooth/hci_core.c:3791 [inline] hci_rx_work+0x50f/0xca0 net/bluetooth/hci_core.c:4028 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Allocated by task 5240: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:257 [inline] __kmalloc_cache_noprof+0x19c/0x2c0 mm/slub.c:4296 kmalloc_noprof include/linux/slab.h:878 [inline] kzalloc_noprof include/linux/slab.h:1004 [inline] l2cap_conn_add+0xa9/0x8e0 net/bluetooth/l2cap_core.c:6868 l2cap_connect_cfm+0x136/0x1220 net/bluetooth/l2cap_core.c:7245 hci_connect_cfm include/net/bluetooth/hci_core.h:1960 [inline] hci_remote_features_evt+0x538/0xaf0 net/bluetooth/hci_event.c:3721 hci_event_func net/bluetooth/hci_event.c:7446 [inline] hci_event_packet+0xac4/0x1540 net/bluetooth/hci_event.c:7498 hci_rx_work+0x3e8/0xca0 net/bluetooth/hci_core.c:4023 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Freed by task 5243: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:2343 [inline] slab_free mm/slub.c:4580 [inline] kfree+0x1a1/0x440 mm/slub.c:4728 l2cap_connect_cfm+0x11f/0x1220 net/bluetooth/l2cap_core.c:7241 hci_connect_cfm include/net/bluetooth/hci_core.h:1960 [inline] hci_conn_failed+0x1d0/0x300 net/bluetooth/hci_conn.c:1262 hci_abort_conn_sync+0x583/0xde0 net/bluetooth/hci_sync.c:5586 hci_cmd_sync_work+0x22d/0x400 net/bluetooth/hci_sync.c:328 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541 insert_work+0x3e/0x330 kernel/workqueue.c:2183 __queue_work+0xc8b/0xf50 kernel/workqueue.c:2339 call_timer_fn+0x190/0x650 kernel/time/timer.c:1794 expire_timers kernel/time/timer.c:1840 [inline] __run_timers kernel/time/timer.c:2419 [inline] __run_timer_base+0x695/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2c7/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 Second to last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541 insert_work+0x3e/0x330 kernel/workqueue.c:2183 __queue_work+0xb66/0xf50 kernel/workqueue.c:2343 queue_work_on+0x1c2/0x380 kernel/workqueue.c:2390 queue_work include/linux/workqueue.h:662 [inline] l2cap_conn_ready net/bluetooth/l2cap_core.c:1640 [inline] l2cap_connect_cfm+0xec2/0x1220 net/bluetooth/l2cap_core.c:7286 hci_connect_cfm include/net/bluetooth/hci_core.h:1960 [inline] hci_remote_features_evt+0x538/0xaf0 net/bluetooth/hci_event.c:3721 hci_event_func net/bluetooth/hci_event.c:7446 [inline] hci_event_packet+0xac4/0x1540 net/bluetooth/hci_event.c:7498 hci_rx_work+0x3e8/0xca0 net/bluetooth/hci_core.c:4023 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 The buggy address belongs to the object at ffff888065372800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 16 bytes inside of freed 1024-byte region [ffff888065372800, ffff888065372c00) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x65370 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xfdffffff(slab) raw: 00fff00000000040 ffff88801ac41dc0 ffffea0001a67600 dead000000000002 raw: 0000000000000000 0000000000100010 00000001fdffffff 0000000000000000 head: 00fff00000000040 ffff88801ac41dc0 ffffea0001a67600 dead000000000002 head: 0000000000000000 0000000000100010 00000001fdffffff 0000000000000000 head: 00fff00000000003 ffffea000194dc01 ffffffffffffffff 0000000000000000 head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 65, tgid 65 (kworker/u8:4), ts 168005984032, free_ts 167592469724 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1500 prep_new_page mm/page_alloc.c:1508 [inline] get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3446 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4702 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2263 alloc_slab_page+0x6a/0x130 mm/slub.c:2413 allocate_slab+0x5a/0x2f0 mm/slub.c:2579 new_slab mm/slub.c:2632 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3819 __slab_alloc+0x58/0xa0 mm/slub.c:3909 __slab_alloc_node mm/slub.c:3962 [inline] slab_alloc_node mm/slub.c:4123 [inline] __do_kmalloc_node mm/slub.c:4264 [inline] __kmalloc_noprof+0x25a/0x400 mm/slub.c:4277 kmalloc_noprof include/linux/slab.h:882 [inline] kzalloc_noprof include/linux/slab.h:1004 [inline] ieee802_11_parse_elems_full+0xdb/0x2880 net/mac80211/parse.c:958 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2383 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2390 [inline] ieee80211_inform_bss+0x15f/0x1080 net/mac80211/scan.c:79 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline] cfg80211_inform_single_bss_data+0xec3/0x2090 net/wireless/scan.c:2333 cfg80211_inform_bss_data+0x3ce/0x5e70 net/wireless/scan.c:3184 cfg80211_inform_bss_frame_data+0x3b8/0x720 net/wireless/scan.c:3279 ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226 ieee80211_rx_bss_info net/mac80211/ibss.c:1100 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline] ieee80211_ibss_rx_queued_mgmt+0x1962/0x2d70 net/mac80211/ibss.c:1606 page last free pid 5292 tgid 5292 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1101 [inline] free_unref_page+0xd22/0xea0 mm/page_alloc.c:2619 kasan_depopulate_vmalloc_pte+0x74/0x90 mm/kasan/shadow.c:408 apply_to_pte_range mm/memory.c:2814 [inline] apply_to_pmd_range mm/memory.c:2858 [inline] apply_to_pud_range mm/memory.c:2894 [inline] apply_to_p4d_range mm/memory.c:2930 [inline] __apply_to_page_range+0x8aa/0xe50 mm/memory.c:2964 kasan_release_vmalloc+0x9a/0xb0 mm/kasan/shadow.c:525 purge_vmap_node+0x417/0x810 mm/vmalloc.c:2209 __purge_vmap_area_lazy+0x708/0xae0 mm/vmalloc.c:2293 drain_vmap_area_work+0x27/0x40 mm/vmalloc.c:2327 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff888065372700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888065372780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888065372800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888065372880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888065372900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================