Bluetooth: hci3: hardware error 0x00
==================================================================
BUG: KASAN: slab-use-after-free in __list_del_entry_valid_or_report+0x1d4/0x200 lib/list_debug.c:62
Read of size 8 at addr ffff8880236f6558 by task kworker/u9:3/5831
CPU: 1 UID: 0 PID: 5831 Comm: kworker/u9:3 Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: hci3 hci_error_reset
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:408 [inline]
print_report+0xc3/0x670 mm/kasan/report.c:521
kasan_report+0xe0/0x110 mm/kasan/report.c:634
__list_del_entry_valid_or_report+0x1d4/0x200 lib/list_debug.c:62
__list_del_entry_valid include/linux/list.h:124 [inline]
__list_del_entry include/linux/list.h:215 [inline]
list_del_init include/linux/list.h:287 [inline]
bt_accept_unlink+0x34/0x2e0 net/bluetooth/af_bluetooth.c:256
l2cap_sock_teardown_cb+0x1a3/0x3c0 net/bluetooth/l2cap_sock.c:1613
l2cap_chan_del+0xbd/0x8f0 net/bluetooth/l2cap_core.c:655
l2cap_conn_del+0x37a/0x730 net/bluetooth/l2cap_core.c:1786
l2cap_disconn_cfm net/bluetooth/l2cap_core.c:7300 [inline]
l2cap_disconn_cfm+0x96/0xd0 net/bluetooth/l2cap_core.c:7293
hci_disconn_cfm include/net/bluetooth/hci_core.h:2068 [inline]
hci_conn_hash_flush+0x10e/0x260 net/bluetooth/hci_conn.c:2534
hci_dev_close_sync+0x602/0x11d0 net/bluetooth/hci_sync.c:5225
hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483
hci_error_reset+0xbf/0x320 net/bluetooth/hci_core.c:1016
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 12:
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:377 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4327 [inline]
__kmalloc_node_track_caller_noprof+0x221/0x510 mm/slub.c:4346
kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:599
__alloc_skb+0x166/0x380 net/core/skbuff.c:668
alloc_skb include/linux/skbuff.h:1340 [inline]
nlmsg_new include/net/netlink.h:1019 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4400
unregister_netdevice_many_notify+0x1048/0x26f0 net/core/dev.c:11976
unregister_netdevice_many net/core/dev.c:12036 [inline]
default_device_exit_batch+0x853/0xaf0 net/core/dev.c:12530
ops_exit_list+0x12b/0x180 net/core/net_namespace.c:177
cleanup_net+0x5c1/0xb30 net/core/net_namespace.c:654
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Freed by task 12:
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:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2380 [inline]
slab_free mm/slub.c:4642 [inline]
kfree+0x2b6/0x4d0 mm/slub.c:4841
skb_kfree_head net/core/skbuff.c:1058 [inline]
skb_free_head+0x108/0x1d0 net/core/skbuff.c:1070
skb_release_data+0x7a5/0x960 net/core/skbuff.c:1097
skb_release_all net/core/skbuff.c:1162 [inline]
__kfree_skb net/core/skbuff.c:1176 [inline]
consume_skb net/core/skbuff.c:1408 [inline]
consume_skb+0xbf/0x100 net/core/skbuff.c:1402
netlink_broadcast_filtered+0x3d5/0xf10 net/netlink/af_netlink.c:1524
nlmsg_multicast_filtered include/net/netlink.h:1129 [inline]
nlmsg_multicast include/net/netlink.h:1148 [inline]
nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2577
unregister_netdevice_many_notify+0x1883/0x26f0 net/core/dev.c:12001
unregister_netdevice_many net/core/dev.c:12036 [inline]
default_device_exit_batch+0x853/0xaf0 net/core/dev.c:12530
ops_exit_list+0x12b/0x180 net/core/net_namespace.c:177
cleanup_net+0x5c1/0xb30 net/core/net_namespace.c:654
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff8880236f6000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1368 bytes inside of
freed 2048-byte region [ffff8880236f6000, ffff8880236f6800)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x236f0
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: f5(slab)
raw: 00fff00000000040 ffff88801b442000 ffffea0000494e00 dead000000000002
raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801b442000 ffffea0000494e00 dead000000000002
head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea00008dbc01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5825, tgid 5825 (syz-executor), ts 111750164835, free_ts 111686228055
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1714
prep_new_page mm/page_alloc.c:1722 [inline]
get_page_from_freelist+0x135c/0x3920 mm/page_alloc.c:3684
__alloc_frozen_pages_noprof+0x263/0x23a0 mm/page_alloc.c:4966
alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2301
alloc_slab_page mm/slub.c:2450 [inline]
allocate_slab mm/slub.c:2618 [inline]
new_slab+0x244/0x340 mm/slub.c:2672
___slab_alloc+0xd9c/0x1940 mm/slub.c:3858
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3948
__slab_alloc_node mm/slub.c:4023 [inline]
slab_alloc_node mm/slub.c:4184 [inline]
__do_kmalloc_node mm/slub.c:4326 [inline]
__kmalloc_node_track_caller_noprof+0x2ee/0x510 mm/slub.c:4346
kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:599
__alloc_skb+0x166/0x380 net/core/skbuff.c:668
alloc_skb include/linux/skbuff.h:1340 [inline]
nlmsg_new include/net/netlink.h:1019 [inline]
inet6_ifinfo_notify+0x77/0x150 net/ipv6/addrconf.c:6182
addrconf_notify+0x81a/0x19e0 net/ipv6/addrconf.c:3764
notifier_call_chain+0xbc/0x410 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2176
call_netdevice_notifiers_extack net/core/dev.c:2214 [inline]
call_netdevice_notifiers net/core/dev.c:2228 [inline]
__dev_notify_flags+0x12c/0x2e0 net/core/dev.c:9393
netif_change_flags+0x108/0x160 net/core/dev.c:9422
page last free pid 5827 tgid 5827 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1258 [inline]
__free_frozen_pages+0x69d/0xff0 mm/page_alloc.c:2721
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4147 [inline]
slab_alloc_node mm/slub.c:4196 [inline]
kmem_cache_alloc_node_noprof+0x1d5/0x3b0 mm/slub.c:4248
__alloc_skb+0x2b2/0x380 net/core/skbuff.c:658
alloc_skb include/linux/skbuff.h:1340 [inline]
nlmsg_new include/net/netlink.h:1019 [inline]
inet_netconf_notify_devconf+0x8b/0x1f0 net/ipv4/devinet.c:2210
__devinet_sysctl_unregister net/ipv4/devinet.c:2705 [inline]
devinet_sysctl_unregister net/ipv4/devinet.c:2729 [inline]
inetdev_event+0x1602/0x18a0 net/ipv4/devinet.c:1664
notifier_call_chain+0xbc/0x410 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2176
call_netdevice_notifiers_extack net/core/dev.c:2214 [inline]
call_netdevice_notifiers net/core/dev.c:2228 [inline]
netif_change_name+0x554/0x920 net/core/dev.c:1436
do_setlink.constprop.0+0x33fe/0x44b0 net/core/rtnetlink.c:3132
rtnl_changelink net/core/rtnetlink.c:3769 [inline]
__rtnl_newlink net/core/rtnetlink.c:3928 [inline]
rtnl_newlink+0x1446/0x2000 net/core/rtnetlink.c:4065
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6955
netlink_rcv_skb+0x16d/0x440 net/netlink/af_netlink.c:2534
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x53d/0x7f0 net/netlink/af_netlink.c:1339
Memory state around the buggy address:
ffff8880236f6400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880236f6480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880236f6500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880236f6580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880236f6600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
slab kmalloc-2k start ffff8880236f6000 pointer offset 1368 size 2048
==================================================================
BUG: KASAN: slab-use-after-free in __list_del_entry_valid_or_report+0x1f8/0x200 lib/list_debug.c:62
Read of size 8 at addr ffff8880236f6558 by task kworker/u9:3/5831
CPU: 1 UID: 0 PID: 5831 Comm: kworker/u9:3 Tainted: G B 6.15.0-rc7-syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: hci3 hci_error_reset
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:408 [inline]
print_report+0xc3/0x670 mm/kasan/report.c:521
kasan_report+0xe0/0x110 mm/kasan/report.c:634
__list_del_entry_valid_or_report+0x1f8/0x200 lib/list_debug.c:62
__list_del_entry_valid include/linux/list.h:124 [inline]
__list_del_entry include/linux/list.h:215 [inline]
list_del_init include/linux/list.h:287 [inline]
bt_accept_unlink+0x34/0x2e0 net/bluetooth/af_bluetooth.c:256
l2cap_sock_teardown_cb+0x1a3/0x3c0 net/bluetooth/l2cap_sock.c:1613
l2cap_chan_del+0xbd/0x8f0 net/bluetooth/l2cap_core.c:655
l2cap_conn_del+0x37a/0x730 net/bluetooth/l2cap_core.c:1786
l2cap_disconn_cfm net/bluetooth/l2cap_core.c:7300 [inline]
l2cap_disconn_cfm+0x96/0xd0 net/bluetooth/l2cap_core.c:7293
hci_disconn_cfm include/net/bluetooth/hci_core.h:2068 [inline]
hci_conn_hash_flush+0x10e/0x260 net/bluetooth/hci_conn.c:2534
hci_dev_close_sync+0x602/0x11d0 net/bluetooth/hci_sync.c:5225
hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483
hci_error_reset+0xbf/0x320 net/bluetooth/hci_core.c:1016
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 12:
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:377 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4327 [inline]
__kmalloc_node_track_caller_noprof+0x221/0x510 mm/slub.c:4346
kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:599
__alloc_skb+0x166/0x380 net/core/skbuff.c:668
alloc_skb include/linux/skbuff.h:1340 [inline]
nlmsg_new include/net/netlink.h:1019 [inline]
rtmsg_ifinfo_build_skb+0x81/0x280 net/core/rtnetlink.c:4400
unregister_netdevice_many_notify+0x1048/0x26f0 net/core/dev.c:11976
unregister_netdevice_many net/core/dev.c:12036 [inline]
default_device_exit_batch+0x853/0xaf0 net/core/dev.c:12530
ops_exit_list+0x12b/0x180 net/core/net_namespace.c:177
cleanup_net+0x5c1/0xb30 net/core/net_namespace.c:654
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Freed by task 12:
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:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2380 [inline]
slab_free mm/slub.c:4642 [inline]
kfree+0x2b6/0x4d0 mm/slub.c:4841
skb_kfree_head net/core/skbuff.c:1058 [inline]
skb_free_head+0x108/0x1d0 net/core/skbuff.c:1070
skb_release_data+0x7a5/0x960 net/core/skbuff.c:1097
skb_release_all net/core/skbuff.c:1162 [inline]
__kfree_skb net/core/skbuff.c:1176 [inline]
consume_skb net/core/skbuff.c:1408 [inline]
consume_skb+0xbf/0x100 net/core/skbuff.c:1402
netlink_broadcast_filtered+0x3d5/0xf10 net/netlink/af_netlink.c:1524
nlmsg_multicast_filtered include/net/netlink.h:1129 [inline]
nlmsg_multicast include/net/netlink.h:1148 [inline]
nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2577
unregister_netdevice_many_notify+0x1883/0x26f0 net/core/dev.c:12001
unregister_netdevice_many net/core/dev.c:12036 [inline]
default_device_exit_batch+0x853/0xaf0 net/core/dev.c:12530
ops_exit_list+0x12b/0x180 net/core/net_namespace.c:177
cleanup_net+0x5c1/0xb30 net/core/net_namespace.c:654
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff8880236f6000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1368 bytes inside of
freed 2048-byte region [ffff8880236f6000, ffff8880236f6800)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x236f0
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: f5(slab)
raw: 00fff00000000040 ffff88801b442000 ffffea0000494e00 dead000000000002
raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801b442000 ffffea0000494e00 dead000000000002
head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea00008dbc01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5825, tgid 5825 (syz-executor), ts 111750164835, free_ts 111686228055
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1714
prep_new_page mm/page_alloc.c:1722 [inline]
get_page_from_freelist+0x135c/0x3920 mm/page_alloc.c:3684
__alloc_frozen_pages_noprof+0x263/0x23a0 mm/page_alloc.c:4966
alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2301
alloc_slab_page mm/slub.c:2450 [inline]
allocate_slab mm/slub.c:2618 [inline]
new_slab+0x244/0x340 mm/slub.c:2672
___slab_alloc+0xd9c/0x1940 mm/slub.c:3858
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3948
__slab_alloc_node mm/slub.c:4023 [inline]
slab_alloc_node mm/slub.c:4184 [inline]
__do_kmalloc_node mm/slub.c:4326 [inline]
__kmalloc_node_track_caller_noprof+0x2ee/0x510 mm/slub.c:4346
kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:599
__alloc_skb+0x166/0x380 net/core/skbuff.c:668
alloc_skb include/linux/skbuff.h:1340 [inline]
nlmsg_new include/net/netlink.h:1019 [inline]
inet6_ifinfo_notify+0x77/0x150 net/ipv6/addrconf.c:6182
addrconf_notify+0x81a/0x19e0 net/ipv6/addrconf.c:3764
notifier_call_chain+0xbc/0x410 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2176
call_netdevice_notifiers_extack net/core/dev.c:2214 [inline]
call_netdevice_notifiers net/core/dev.c:2228 [inline]
__dev_notify_flags+0x12c/0x2e0 net/core/dev.c:9393
netif_change_flags+0x108/0x160 net/core/dev.c:9422
page last free pid 5827 tgid 5827 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1258 [inline]
__free_frozen_pages+0x69d/0xff0 mm/page_alloc.c:2721
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4147 [inline]
slab_alloc_node mm/slub.c:4196 [inline]
kmem_cache_alloc_node_noprof+0x1d5/0x3b0 mm/slub.c:4248
__alloc_skb+0x2b2/0x380 net/core/skbuff.c:658
alloc_skb include/linux/skbuff.h:1340 [inline]
nlmsg_new include/net/netlink.h:1019 [inline]
inet_netconf_notify_devconf+0x8b/0x1f0 net/ipv4/devinet.c:2210
__devinet_sysctl_unregister net/ipv4/devinet.c:2705 [inline]
devinet_sysctl_unregister net/ipv4/devinet.c:2729 [inline]
inetdev_event+0x1602/0x18a0 net/ipv4/devinet.c:1664
notifier_call_chain+0xbc/0x410 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2176
call_netdevice_notifiers_extack net/core/dev.c:2214 [inline]
call_netdevice_notifiers net/core/dev.c:2228 [inline]
netif_change_name+0x554/0x920 net/core/dev.c:1436
do_setlink.constprop.0+0x33fe/0x44b0 net/core/rtnetlink.c:3132
rtnl_changelink net/core/rtnetlink.c:3769 [inline]
__rtnl_newlink net/core/rtnetlink.c:3928 [inline]
rtnl_newlink+0x1446/0x2000 net/core/rtnetlink.c:4065
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6955
netlink_rcv_skb+0x16d/0x440 net/netlink/af_netlink.c:2534
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x53d/0x7f0 net/netlink/af_netlink.c:1339
Memory state around the buggy address:
ffff8880236f6400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880236f6480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880236f6500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880236f6580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880236f6600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
list_del corruption. prev->next should be ffff88805cb5e558, but was 0000000000000000. (prev=ffff8880236f6558)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:62!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5831 Comm: kworker/u9:3 Tainted: G B 6.15.0-rc7-syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: hci3 hci_error_reset
RIP: 0010:__list_del_entry_valid_or_report+0x17a/0x200 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 80 92 f4 8b e8 e7 54 c6 fc 90 <0f> 0b 4c 89 e7 e8 9c 26 29 fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc900031079b8 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff88805cb5e558 RCX: ffffffff819aa5d9
RDX: 0000000000000000 RSI: ffffffff819b2466 RDI: 0000000000000005
RBP: ffff8880236f6558 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 6c65645f7473696c R12: ffff8880236f6558
R13: ffff88805cb5e560 R14: ffff8880236f6000 R15: ffff88805cb58010
FS: 0000000000000000(0000) GS:ffff8881249e0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffa5df0380 CR3: 0000000048a11000 CR4: 0000000000350ef0
Call Trace:
__list_del_entry_valid include/linux/list.h:124 [inline]
__list_del_entry include/linux/list.h:215 [inline]
list_del_init include/linux/list.h:287 [inline]
bt_accept_unlink+0x34/0x2e0 net/bluetooth/af_bluetooth.c:256
l2cap_sock_teardown_cb+0x1a3/0x3c0 net/bluetooth/l2cap_sock.c:1613
l2cap_chan_del+0xbd/0x8f0 net/bluetooth/l2cap_core.c:655
l2cap_conn_del+0x37a/0x730 net/bluetooth/l2cap_core.c:1786
l2cap_disconn_cfm net/bluetooth/l2cap_core.c:7300 [inline]
l2cap_disconn_cfm+0x96/0xd0 net/bluetooth/l2cap_core.c:7293
hci_disconn_cfm include/net/bluetooth/hci_core.h:2068 [inline]
hci_conn_hash_flush+0x10e/0x260 net/bluetooth/hci_conn.c:2534
hci_dev_close_sync+0x602/0x11d0 net/bluetooth/hci_sync.c:5225
hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483
hci_error_reset+0xbf/0x320 net/bluetooth/hci_core.c:1016
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x17a/0x200 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 80 92 f4 8b e8 e7 54 c6 fc 90 <0f> 0b 4c 89 e7 e8 9c 26 29 fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc900031079b8 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff88805cb5e558 RCX: ffffffff819aa5d9
RDX: 0000000000000000 RSI: ffffffff819b2466 RDI: 0000000000000005
RBP: ffff8880236f6558 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 6c65645f7473696c R12: ffff8880236f6558
R13: ffff88805cb5e560 R14: ffff8880236f6000 R15: ffff88805cb58010
FS: 0000000000000000(0000) GS:ffff8881249e0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffa5df0380 CR3: 0000000028913000 CR4: 0000000000350ef0