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Bluetooth: hci5: killing stalled connection 11:aa:aa:aa:aa:aa
Bluetooth: hci5: link tx timeout
Bluetooth: hci5: killing stalled connection 11:aa:aa:aa:aa:aa
Bluetooth: hci5: link tx timeout
Bluetooth: hci5: killing stalled connection 11:aa:aa:aa:aa:aa
==================================================================
BUG: KASAN: slab-use-after-free in hci_disconnect+0x207/0x220 net/bluetooth/hci_conn.c:190
Read of size 8 at addr ffff8880192b8038 by task kworker/u9:5/5101

CPU: 1 PID: 5101 Comm: kworker/u9:5 Not tainted 6.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: hci5 hci_tx_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:488
 kasan_report+0xd9/0x110 mm/kasan/report.c:601
 hci_disconnect+0x207/0x220 net/bluetooth/hci_conn.c:190
 hci_link_tx_to net/bluetooth/hci_core.c:3438 [inline]
 __check_timeout net/bluetooth/hci_core.c:3579 [inline]
 __check_timeout+0x3fe/0x730 net/bluetooth/hci_core.c:3559
 hci_sched_le net/bluetooth/hci_core.c:3696 [inline]
 hci_tx_work+0x6e2/0x1540 net/bluetooth/hci_core.c:3774
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3248
 process_scheduled_works kernel/workqueue.c:3329 [inline]
 worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Allocated by task 5101:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:387
 kmalloc_noprof include/linux/slab.h:660 [inline]
 kzalloc_noprof include/linux/slab.h:778 [inline]
 __hci_conn_add+0x131/0x1a50 net/bluetooth/hci_conn.c:935
 hci_conn_add_unset+0x6d/0x100 net/bluetooth/hci_conn.c:1044
 le_conn_complete_evt+0x790/0x1d80 net/bluetooth/hci_event.c:5635
 hci_le_conn_complete_evt+0x23c/0x370 net/bluetooth/hci_event.c:5787
 hci_le_meta_evt+0x2e2/0x5d0 net/bluetooth/hci_event.c:7133
 hci_event_func net/bluetooth/hci_event.c:7441 [inline]
 hci_event_packet+0x664/0x1170 net/bluetooth/hci_event.c:7496
 hci_rx_work+0x2c4/0x1610 net/bluetooth/hci_core.c:4042
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3248
 process_scheduled_works kernel/workqueue.c:3329 [inline]
 worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Freed by task 5091:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
 poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
 __kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2196 [inline]
 slab_free mm/slub.c:4438 [inline]
 kfree+0x12a/0x3b0 mm/slub.c:4559
 device_release+0xa1/0x240 drivers/base/core.c:2581
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1fa/0x5b0 lib/kobject.c:737
 put_device drivers/base/core.c:3787 [inline]
 device_unregister+0x2f/0xc0 drivers/base/core.c:3910
 hci_conn_del_sysfs+0xb4/0x180 net/bluetooth/hci_sysfs.c:86
 hci_conn_cleanup net/bluetooth/hci_conn.c:176 [inline]
 hci_conn_del+0x54e/0xdb0 net/bluetooth/hci_conn.c:1163
 hci_abort_conn_sync+0x75a/0xb50 net/bluetooth/hci_sync.c:5463
 abort_conn_sync+0x197/0x360 net/bluetooth/hci_conn.c:2918
 hci_cmd_sync_work+0x1a4/0x410 net/bluetooth/hci_sync.c:323
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3248
 process_scheduled_works kernel/workqueue.c:3329 [inline]
 worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 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 ffff8880192b8000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 56 bytes inside of
 freed 8192-byte region [ffff8880192b8000, ffff8880192ba000)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x192b8
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: 0xffffefff(slab)
raw: 00fff00000000040 ffff888015442280 ffffea000072ee00 dead000000000004
raw: 0000000000000000 0000000000020002 00000001ffffefff 0000000000000000
head: 00fff00000000040 ffff888015442280 ffffea000072ee00 dead000000000004
head: 0000000000000000 0000000000020002 00000001ffffefff 0000000000000000
head: 00fff00000000003 ffffea000064ae01 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 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4921, tgid 4921 (dhcpcd-run-hook), ts 55050626693, free_ts 55020846840
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
 prep_new_page mm/page_alloc.c:1481 [inline]
 get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
 __alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
 alloc_slab_page+0x56/0x110 mm/slub.c:2265
 allocate_slab mm/slub.c:2428 [inline]
 new_slab+0x84/0x260 mm/slub.c:2481
 ___slab_alloc+0xdac/0x1870 mm/slub.c:3667
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
 __slab_alloc_node mm/slub.c:3810 [inline]
 slab_alloc_node mm/slub.c:3990 [inline]
 kmalloc_trace_noprof+0x2b4/0x300 mm/slub.c:4149
 kmalloc_noprof include/linux/slab.h:660 [inline]
 kzalloc_noprof include/linux/slab.h:778 [inline]
 tomoyo_print_bprm security/tomoyo/audit.c:26 [inline]
 tomoyo_init_log+0xcb6/0x2180 security/tomoyo/audit.c:264
 tomoyo_supervisor+0x30c/0xea0 security/tomoyo/common.c:2089
 tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline]
 tomoyo_env_perm+0x193/0x210 security/tomoyo/environ.c:63
 tomoyo_environ security/tomoyo/domain.c:672 [inline]
 tomoyo_find_next_domain+0xef9/0x2020 security/tomoyo/domain.c:878
 tomoyo_bprm_check_security security/tomoyo/tomoyo.c:102 [inline]
 tomoyo_bprm_check_security+0x12e/0x1d0 security/tomoyo/tomoyo.c:92
 security_bprm_check+0x65/0xb0 security/security.c:1191
 search_binary_handler fs/exec.c:1785 [inline]
 exec_binprm fs/exec.c:1839 [inline]
 bprm_execve fs/exec.c:1891 [inline]
 bprm_execve+0x642/0x19b0 fs/exec.c:1867
 do_execveat_common.isra.0+0x5cb/0x750 fs/exec.c:1998
page last free pid 4920 tgid 4920 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1093 [inline]
 free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588
 __put_partials+0x14c/0x170 mm/slub.c:2995
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x4e/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:322
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3940 [inline]
 slab_alloc_node mm/slub.c:4002 [inline]
 __do_kmalloc_node mm/slub.c:4122 [inline]
 __kmalloc_noprof+0x19d/0x410 mm/slub.c:4136
 kmalloc_noprof include/linux/slab.h:664 [inline]
 tomoyo_add_entry security/tomoyo/common.c:2023 [inline]
 tomoyo_supervisor+0x43d/0xea0 security/tomoyo/common.c:2095
 tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline]
 tomoyo_env_perm+0x193/0x210 security/tomoyo/environ.c:63
 tomoyo_environ security/tomoyo/domain.c:672 [inline]
 tomoyo_find_next_domain+0xef9/0x2020 security/tomoyo/domain.c:878
 tomoyo_bprm_check_security security/tomoyo/tomoyo.c:102 [inline]
 tomoyo_bprm_check_security+0x12e/0x1d0 security/tomoyo/tomoyo.c:92
 security_bprm_check+0x65/0xb0 security/security.c:1191
 search_binary_handler fs/exec.c:1785 [inline]
 exec_binprm fs/exec.c:1839 [inline]
 bprm_execve fs/exec.c:1891 [inline]
 bprm_execve+0x642/0x19b0 fs/exec.c:1867
 do_execveat_common.isra.0+0x5cb/0x750 fs/exec.c:1998
 do_execve fs/exec.c:2072 [inline]
 __do_sys_execve fs/exec.c:2148 [inline]
 __se_sys_execve fs/exec.c:2143 [inline]
 __x64_sys_execve+0x8c/0xb0 fs/exec.c:2143
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff8880192b7f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880192b7f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880192b8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff8880192b8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880192b8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================