==================================================================
BUG: KASAN: slab-use-after-free in l2cap_sock_ready_cb+0x16a/0x170 net/bluetooth/l2cap_sock.c:1672
Read of size 8 at addr ffff8880796f8188 by task kworker/u9:5/2651
CPU: 1 UID: 0 PID: 2651 Comm: kworker/u9:5 Not tainted 6.13.0-rc4-syzkaller-00071-gfd0584d220fe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: hci2 hci_rx_work
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:378 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:489
kasan_report+0xd9/0x110 mm/kasan/report.c:602
l2cap_sock_ready_cb+0x16a/0x170 net/bluetooth/l2cap_sock.c:1672
l2cap_chan_ready net/bluetooth/l2cap_core.c:1239 [inline]
l2cap_le_start+0x1ec/0xe40 net/bluetooth/l2cap_core.c:1368
l2cap_conn_ready net/bluetooth/l2cap_core.c:1624 [inline]
l2cap_connect_cfm+0x99f/0xf10 net/bluetooth/l2cap_core.c:7280
hci_connect_cfm include/net/bluetooth/hci_core.h:2057 [inline]
le_conn_complete_evt+0x1690/0x1da0 net/bluetooth/hci_event.c:5763
hci_le_conn_complete_evt+0x23c/0x370 net/bluetooth/hci_event.c:5789
hci_le_meta_evt+0x2e5/0x5d0 net/bluetooth/hci_event.c:7162
hci_event_func net/bluetooth/hci_event.c:7470 [inline]
hci_event_packet+0x669/0x1180 net/bluetooth/hci_event.c:7525
hci_rx_work+0x2c5/0x16b0 net/bluetooth/hci_core.c:4035
process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Allocated by task 5305:
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:4298 [inline]
__kmalloc_noprof+0x21c/0x510 mm/slub.c:4310
kmalloc_noprof include/linux/slab.h:905 [inline]
sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2165
sk_alloc+0x36/0xb90 net/core/sock.c:2218
bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:148
l2cap_sock_alloc.constprop.0+0x33/0x1c0 net/bluetooth/l2cap_sock.c:1879
l2cap_sock_create+0x123/0x1f0 net/bluetooth/l2cap_sock.c:1920
bt_sock_create+0x185/0x350 net/bluetooth/af_bluetooth.c:132
__sock_create+0x338/0x8d0 net/socket.c:1558
sock_create net/socket.c:1616 [inline]
__sys_socket_create net/socket.c:1653 [inline]
__sys_socket+0x14f/0x260 net/socket.c:1700
__do_sys_socket net/socket.c:1714 [inline]
__se_sys_socket net/socket.c:1712 [inline]
__x64_sys_socket+0x72/0xb0 net/socket.c:1712
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
Freed by task 5305:
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:582
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:2353 [inline]
slab_free mm/slub.c:4613 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4761
sk_prot_free net/core/sock.c:2201 [inline]
__sk_destruct+0x5eb/0x720 net/core/sock.c:2293
sk_destruct+0xc2/0xf0 net/core/sock.c:2308
__sk_free+0xf4/0x3e0 net/core/sock.c:2319
sk_free+0x6a/0x90 net/core/sock.c:2330
sock_put include/net/sock.h:1910 [inline]
l2cap_sock_kill net/bluetooth/l2cap_sock.c:1252 [inline]
l2cap_sock_kill+0x171/0x2d0 net/bluetooth/l2cap_sock.c:1237
l2cap_sock_release+0x189/0x210 net/bluetooth/l2cap_sock.c:1423
__sock_release+0xb3/0x270 net/socket.c:640
sock_close+0x1c/0x30 net/socket.c:1408
__fput+0x3fb/0xb60 fs/file_table.c:450
task_work_run+0x151/0x250 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff8880796f8000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 392 bytes inside of
freed 2048-byte region [ffff8880796f8000, ffff8880796f8800)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x796f8
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 ffff88801b042000 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000080008 00000001f5000000 0000000000000000
head: 00fff00000000040 ffff88801b042000 dead000000000100 dead000000000122
head: 0000000000000000 0000000000080008 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea0001e5be01 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5832, tgid 5832 (syz-executor), ts 89674768841, free_ts 89673540971
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
prep_new_page mm/page_alloc.c:1566 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
__alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab mm/slub.c:2589 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2642
___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
__slab_alloc_node mm/slub.c:3995 [inline]
slab_alloc_node mm/slub.c:4156 [inline]
__kmalloc_cache_noprof+0xfa/0x410 mm/slub.c:4324
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
br_vlan_add+0x113/0xb40 net/bridge/br_vlan.c:786
br_vlan_bridge_event+0x42c/0x790 net/bridge/br_vlan.c:1739
br_device_event+0xf7/0x920 net/bridge/br.c:40
notifier_call_chain+0xba/0x410 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996
call_netdevice_notifiers_extack net/core/dev.c:2034 [inline]
call_netdevice_notifiers net/core/dev.c:2048 [inline]
register_netdevice+0x17a0/0x1e90 net/core/dev.c:10632
br_dev_newlink+0x27/0x110 net/bridge/br_netlink.c:1563
rtnl_newlink_create net/core/rtnetlink.c:3786 [inline]
__rtnl_newlink net/core/rtnetlink.c:3897 [inline]
rtnl_newlink+0xb98/0x1d60 net/core/rtnetlink.c:4012
page last free pid 5832 tgid 5832 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_page+0x661/0x1080 mm/page_alloc.c:2659
__put_partials+0x14c/0x170 mm/slub.c:3157
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:4119 [inline]
slab_alloc_node mm/slub.c:4168 [inline]
__kmalloc_cache_noprof+0x243/0x410 mm/slub.c:4324
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
ref_tracker_alloc+0x17c/0x5b0 lib/ref_tracker.c:203
__netdev_tracker_alloc include/linux/netdevice.h:4136 [inline]
netdev_hold include/linux/netdevice.h:4165 [inline]
netdev_hold include/linux/netdevice.h:4160 [inline]
netdev_queue_add_kobject net/core/net-sysfs.c:1786 [inline]
netdev_queue_update_kobjects+0x24c/0x5b0 net/core/net-sysfs.c:1841
register_queue_kobjects net/core/net-sysfs.c:1903 [inline]
netdev_register_kobject+0x28c/0x3a0 net/core/net-sysfs.c:2143
register_netdevice+0x1473/0x1e90 net/core/dev.c:10599
br_dev_newlink+0x27/0x110 net/bridge/br_netlink.c:1563
rtnl_newlink_create net/core/rtnetlink.c:3786 [inline]
__rtnl_newlink net/core/rtnetlink.c:3897 [inline]
rtnl_newlink+0xb98/0x1d60 net/core/rtnetlink.c:4012
rtnetlink_rcv_msg+0x95e/0xea0 net/core/rtnetlink.c:6922
netlink_rcv_skb+0x16e/0x440 net/netlink/af_netlink.c:2542
netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
netlink_unicast+0x53f/0x7f0 net/netlink/af_netlink.c:1347
netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891
Memory state around the buggy address:
ffff8880796f8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880796f8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880796f8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880796f8200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880796f8280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in sock_def_readable+0x5c4/0x610 net/core/sock.c:3451
Read of size 8 at addr ffff8880796f8180 by task kworker/u9:5/2651
CPU: 0 UID: 0 PID: 2651 Comm: kworker/u9:5 Tainted: G B 6.13.0-rc4-syzkaller-00071-gfd0584d220fe #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: hci2 hci_rx_work
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:378 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:489
kasan_report+0xd9/0x110 mm/kasan/report.c:602
sock_def_readable+0x5c4/0x610 net/core/sock.c:3451
l2cap_sock_ready_cb+0x10b/0x170 net/bluetooth/l2cap_sock.c:1672
l2cap_chan_ready net/bluetooth/l2cap_core.c:1239 [inline]
l2cap_le_start+0x1ec/0xe40 net/bluetooth/l2cap_core.c:1368
l2cap_conn_ready net/bluetooth/l2cap_core.c:1624 [inline]
l2cap_connect_cfm+0x99f/0xf10 net/bluetooth/l2cap_core.c:7280
hci_connect_cfm include/net/bluetooth/hci_core.h:2057 [inline]
le_conn_complete_evt+0x1690/0x1da0 net/bluetooth/hci_event.c:5763
hci_le_conn_complete_evt+0x23c/0x370 net/bluetooth/hci_event.c:5789
hci_le_meta_evt+0x2e5/0x5d0 net/bluetooth/hci_event.c:7162
hci_event_func net/bluetooth/hci_event.c:7470 [inline]
hci_event_packet+0x669/0x1180 net/bluetooth/hci_event.c:7525
hci_rx_work+0x2c5/0x16b0 net/bluetooth/hci_core.c:4035
process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Allocated by task 5305:
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:4298 [inline]
__kmalloc_noprof+0x21c/0x510 mm/slub.c:4310
kmalloc_noprof include/linux/slab.h:905 [inline]
sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2165
sk_alloc+0x36/0xb90 net/core/sock.c:2218
bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:148
l2cap_sock_alloc.constprop.0+0x33/0x1c0 net/bluetooth/l2cap_sock.c:1879
l2cap_sock_create+0x123/0x1f0 net/bluetooth/l2cap_sock.c:1920
bt_sock_create+0x185/0x350 net/bluetooth/af_bluetooth.c:132
__sock_create+0x338/0x8d0 net/socket.c:1558
sock_create net/socket.c:1616 [inline]
__sys_socket_create net/socket.c:1653 [inline]
__sys_socket+0x14f/0x260 net/socket.c:1700
__do_sys_socket net/socket.c:1714 [inline]
__se_sys_socket net/socket.c:1712 [inline]
__x64_sys_socket+0x72/0xb0 net/socket.c:1712
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
Freed by task 5305:
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:582
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:2353 [inline]
slab_free mm/slub.c:4613 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4761
sk_prot_free net/core/sock.c:2201 [inline]
__sk_destruct+0x5eb/0x720 net/core/sock.c:2293
sk_destruct+0xc2/0xf0 net/core/sock.c:2308
__sk_free+0xf4/0x3e0 net/core/sock.c:2319
sk_free+0x6a/0x90 net/core/sock.c:2330
sock_put include/net/sock.h:1910 [inline]
l2cap_sock_kill net/bluetooth/l2cap_sock.c:1252 [inline]
l2cap_sock_kill+0x171/0x2d0 net/bluetooth/l2cap_sock.c:1237
l2cap_sock_release+0x189/0x210 net/bluetooth/l2cap_sock.c:1423
__sock_release+0xb3/0x270 net/socket.c:640
sock_close+0x1c/0x30 net/socket.c:1408
__fput+0x3fb/0xb60 fs/file_table.c:450
task_work_run+0x151/0x250 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff8880796f8000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 384 bytes inside of
freed 2048-byte region [ffff8880796f8000, ffff8880796f8800)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x796f8
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 ffff88801b042000 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000080008 00000001f5000000 0000000000000000
head: 00fff00000000040 ffff88801b042000 dead000000000100 dead000000000122
head: 0000000000000000 0000000000080008 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea0001e5be01 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5832, tgid 5832 (syz-executor), ts 89674768841, free_ts 89673540971
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
prep_new_page mm/page_alloc.c:1566 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
__alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab mm/slub.c:2589 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2642
___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
__slab_alloc_node mm/slub.c:3995 [inline]
slab_alloc_node mm/slub.c:4156 [inline]
__kmalloc_cache_noprof+0xfa/0x410 mm/slub.c:4324
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
br_vlan_add+0x113/0xb40 net/bridge/br_vlan.c:786
br_vlan_bridge_event+0x42c/0x790 net/bridge/br_vlan.c:1739
br_device_event+0xf7/0x920 net/bridge/br.c:40
notifier_call_chain+0xba/0x410 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996
call_netdevice_notifiers_extack net/core/dev.c:2034 [inline]
call_netdevice_notifiers net/core/dev.c:2048 [inline]
register_netdevice+0x17a0/0x1e90 net/core/dev.c:10632
br_dev_newlink+0x27/0x110 net/bridge/br_netlink.c:1563
rtnl_newlink_create net/core/rtnetlink.c:3786 [inline]
__rtnl_newlink net/core/rtnetlink.c:3897 [inline]
rtnl_newlink+0xb98/0x1d60 net/core/rtnetlink.c:4012
page last free pid 5832 tgid 5832 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_page+0x661/0x1080 mm/page_alloc.c:2659
__put_partials+0x14c/0x170 mm/slub.c:3157
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:4119 [inline]
slab_alloc_node mm/slub.c:4168 [inline]
__kmalloc_cache_noprof+0x243/0x410 mm/slub.c:4324
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
ref_tracker_alloc+0x17c/0x5b0 lib/ref_tracker.c:203
__netdev_tracker_alloc include/linux/netdevice.h:4136 [inline]
netdev_hold include/linux/netdevice.h:4165 [inline]
netdev_hold include/linux/netdevice.h:4160 [inline]
netdev_queue_add_kobject net/core/net-sysfs.c:1786 [inline]
netdev_queue_update_kobjects+0x24c/0x5b0 net/core/net-sysfs.c:1841
register_queue_kobjects net/core/net-sysfs.c:1903 [inline]
netdev_register_kobject+0x28c/0x3a0 net/core/net-sysfs.c:2143
register_netdevice+0x1473/0x1e90 net/core/dev.c:10599
br_dev_newlink+0x27/0x110 net/bridge/br_netlink.c:1563
rtnl_newlink_create net/core/rtnetlink.c:3786 [inline]
__rtnl_newlink net/core/rtnetlink.c:3897 [inline]
rtnl_newlink+0xb98/0x1d60 net/core/rtnetlink.c:4012
rtnetlink_rcv_msg+0x95e/0xea0 net/core/rtnetlink.c:6922
netlink_rcv_skb+0x16e/0x440 net/netlink/af_netlink.c:2542
netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
netlink_unicast+0x53f/0x7f0 net/netlink/af_netlink.c:1347
netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891
Memory state around the buggy address:
ffff8880796f8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880796f8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880796f8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880796f8200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880796f8280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: slab-use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: slab-use-after-free in sock_flag include/net/sock.h:992 [inline]
BUG: KASAN: slab-use-after-free in sk_wake_async_rcu include/net/sock.h:2473 [inline]
BUG: KASAN: slab-use-after-free in sock_def_readable+0x175/0x610 net/core/sock.c:3455
Read of size 8 at addr ffff8880796f8060 by task kworker/u9:5/2651
CPU: 0 UID: 0 PID: 2651 Comm: kworker/u9:5 Tainted: G B 6.13.0-rc4-syzkaller-00071-gfd0584d220fe #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: hci2 hci_rx_work
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:378 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:489
kasan_report+0xd9/0x110 mm/kasan/report.c:602
check_region_inline mm/kasan/generic.c:183 [inline]
kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
sock_flag include/net/sock.h:992 [inline]
sk_wake_async_rcu include/net/sock.h:2473 [inline]
sock_def_readable+0x175/0x610 net/core/sock.c:3455
l2cap_sock_ready_cb+0x10b/0x170 net/bluetooth/l2cap_sock.c:1672
l2cap_chan_ready net/bluetooth/l2cap_core.c:1239 [inline]
l2cap_le_start+0x1ec/0xe40 net/bluetooth/l2cap_core.c:1368
l2cap_conn_ready net/bluetooth/l2cap_core.c:1624 [inline]
l2cap_connect_cfm+0x99f/0xf10 net/bluetooth/l2cap_core.c:7280
hci_connect_cfm include/net/bluetooth/hci_core.h:2057 [inline]
le_conn_complete_evt+0x1690/0x1da0 net/bluetooth/hci_event.c:5763
hci_le_conn_complete_evt+0x23c/0x370 net/bluetooth/hci_event.c:5789
hci_le_meta_evt+0x2e5/0x5d0 net/bluetooth/hci_event.c:7162
hci_event_func net/bluetooth/hci_event.c:7470 [inline]
hci_event_packet+0x669/0x1180 net/bluetooth/hci_event.c:7525
hci_rx_work+0x2c5/0x16b0 net/bluetooth/hci_core.c:4035
process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Allocated by task 5305:
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:4298 [inline]
__kmalloc_noprof+0x21c/0x510 mm/slub.c:4310
kmalloc_noprof include/linux/slab.h:905 [inline]
sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2165
sk_alloc+0x36/0xb90 net/core/sock.c:2218
bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:148
l2cap_sock_alloc.constprop.0+0x33/0x1c0 net/bluetooth/l2cap_sock.c:1879
l2cap_sock_create+0x123/0x1f0 net/bluetooth/l2cap_sock.c:1920
bt_sock_create+0x185/0x350 net/bluetooth/af_bluetooth.c:132
__sock_create+0x338/0x8d0 net/socket.c:1558
sock_create net/socket.c:1616 [inline]
__sys_socket_create net/socket.c:1653 [inline]
__sys_socket+0x14f/0x260 net/socket.c:1700
__do_sys_socket net/socket.c:1714 [inline]
__se_sys_socket net/socket.c:1712 [inline]
__x64_sys_socket+0x72/0xb0 net/socket.c:1712
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
Freed by task 5305:
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:582
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:2353 [inline]
slab_free mm/slub.c:4613 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4761
sk_prot_free net/core/sock.c:2201 [inline]
__sk_destruct+0x5eb/0x720 net/core/sock.c:2293
sk_destruct+0xc2/0xf0 net/core/sock.c:2308
__sk_free+0xf4/0x3e0 net/core/sock.c:2319
sk_free+0x6a/0x90 net/core/sock.c:2330
sock_put include/net/sock.h:1910 [inline]
l2cap_sock_kill net/bluetooth/l2cap_sock.c:1252 [inline]
l2cap_sock_kill+0x171/0x2d0 net/bluetooth/l2cap_sock.c:1237
l2cap_sock_release+0x189/0x210 net/bluetooth/l2cap_sock.c:1423
__sock_release+0xb3/0x270 net/socket.c:640
sock_close+0x1c/0x30 net/socket.c:1408
__fput+0x3fb/0xb60 fs/file_table.c:450
task_work_run+0x151/0x250 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff8880796f8000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 96 bytes inside of
freed 2048-byte region [ffff8880796f8000, ffff8880796f8800)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x796f8
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 ffff88801b042000 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000080008 00000001f5000000 0000000000000000
head: 00fff00000000040 ffff88801b042000 dead000000000100 dead000000000122
head: 0000000000000000 0000000000080008 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea0001e5be01 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5832, tgid 5832 (syz-executor), ts 89674768841, free_ts 89673540971
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
prep_new_page mm/page_alloc.c:1566 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
__alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab mm/slub.c:2589 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2642
___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
__slab_alloc_node mm/slub.c:3995 [inline]
slab_alloc_node mm/slub.c:4156 [inline]
__kmalloc_cache_noprof+0xfa/0x410 mm/slub.c:4324
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
br_vlan_add+0x113/0xb40 net/bridge/br_vlan.c:786
br_vlan_bridge_event+0x42c/0x790 net/bridge/br_vlan.c:1739
br_device_event+0xf7/0x920 net/bridge/br.c:40
notifier_call_chain+0xba/0x410 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996
call_netdevice_notifiers_extack net/core/dev.c:2034 [inline]
call_netdevice_notifiers net/core/dev.c:2048 [inline]
register_netdevice+0x17a0/0x1e90 net/core/dev.c:10632
br_dev_newlink+0x27/0x110 net/bridge/br_netlink.c:1563
rtnl_newlink_create net/core/rtnetlink.c:3786 [inline]
__rtnl_newlink net/core/rtnetlink.c:3897 [inline]
rtnl_newlink+0xb98/0x1d60 net/core/rtnetlink.c:4012
page last free pid 5832 tgid 5832 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_page+0x661/0x1080 mm/page_alloc.c:2659
__put_partials+0x14c/0x170 mm/slub.c:3157
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:4119 [inline]
slab_alloc_node mm/slub.c:4168 [inline]
__kmalloc_cache_noprof+0x243/0x410 mm/slub.c:4324
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
ref_tracker_alloc+0x17c/0x5b0 lib/ref_tracker.c:203
__netdev_tracker_alloc include/linux/netdevice.h:4136 [inline]
netdev_hold include/linux/netdevice.h:4165 [inline]
netdev_hold include/linux/netdevice.h:4160 [inline]
netdev_queue_add_kobject net/core/net-sysfs.c:1786 [inline]
netdev_queue_update_kobjects+0x24c/0x5b0 net/core/net-sysfs.c:1841
register_queue_kobjects net/core/net-sysfs.c:1903 [inline]
netdev_register_kobject+0x28c/0x3a0 net/core/net-sysfs.c:2143
register_netdevice+0x1473/0x1e90 net/core/dev.c:10599
br_dev_newlink+0x27/0x110 net/bridge/br_netlink.c:1563
rtnl_newlink_create net/core/rtnetlink.c:3786 [inline]
__rtnl_newlink net/core/rtnetlink.c:3897 [inline]
rtnl_newlink+0xb98/0x1d60 net/core/rtnetlink.c:4012
rtnetlink_rcv_msg+0x95e/0xea0 net/core/rtnetlink.c:6922
netlink_rcv_skb+0x16e/0x440 net/netlink/af_netlink.c:2542
netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
netlink_unicast+0x53f/0x7f0 net/netlink/af_netlink.c:1347
netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891
Memory state around the buggy address:
ffff8880796f7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880796f7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880796f8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880796f8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880796f8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in constant_test_bit arch/x86/include/asm/bitops.h:206 [inline]
BUG: KASAN: slab-use-after-free in arch_test_bit arch/x86/include/asm/bitops.h:238 [inline]
BUG: KASAN: slab-use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
BUG: KASAN: slab-use-after-free in sock_flag include/net/sock.h:992 [inline]
BUG: KASAN: slab-use-after-free in sk_wake_async_rcu include/net/sock.h:2473 [inline]
BUG: KASAN: slab-use-after-free in sock_def_readable+0x5d1/0x610 net/core/sock.c:3455
Read of size 8 at addr ffff8880796f8060 by task kworker/u9:5/2651
CPU: 0 UID: 0 PID: 2651 Comm: kworker/u9:5 Tainted: G B 6.13.0-rc4-syzkaller-00071-gfd0584d220fe #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: hci2 hci_rx_work
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:378 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:489
kasan_report+0xd9/0x110 mm/kasan/report.c:602
constant_test_bit arch/x86/include/asm/bitops.h:206 [inline]
arch_test_bit arch/x86/include/asm/bitops.h:238 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
sock_flag include/net/sock.h:992 [inline]
sk_wake_async_rcu include/net/sock.h:2473 [inline]
sock_def_readable+0x5d1/0x610 net/core/sock.c:3455
l2cap_sock_ready_cb+0x10b/0x170 net/bluetooth/l2cap_sock.c:1672
l2cap_chan_ready net/bluetooth/l2cap_core.c:1239 [inline]
l2cap_le_start+0x1ec/0xe40 net/bluetooth/l2cap_core.c:1368
l2cap_conn_ready net/bluetooth/l2cap_core.c:1624 [inline]
l2cap_connect_cfm+0x99f/0xf10 net/bluetooth/l2cap_core.c:7280
hci_connect_cfm include/net/bluetooth/hci_core.h:2057 [inline]
le_conn_complete_evt+0x1690/0x1da0 net/bluetooth/hci_event.c:5763
hci_le_conn_complete_evt+0x23c/0x370 net/bluetooth/hci_event.c:5789
hci_le_meta_evt+0x2e5/0x5d0 net/bluetooth/hci_event.c:7162
hci_event_func net/bluetooth/hci_event.c:7470 [inline]
hci_event_packet+0x669/0x1180 net/bluetooth/hci_event.c:7525
hci_rx_work+0x2c5/0x16b0 net/bluetooth/hci_core.c:4035
process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Allocated by task 5305:
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:4298 [inline]
__kmalloc_noprof+0x21c/0x510 mm/slub.c:4310
kmalloc_noprof include/linux/slab.h:905 [inline]
sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2165
sk_alloc+0x36/0xb90 net/core/sock.c:2218
bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:148
l2cap_sock_alloc.constprop.0+0x33/0x1c0 net/bluetooth/l2cap_sock.c:1879
l2cap_sock_create+0x123/0x1f0 net/bluetooth/l2cap_sock.c:1920
bt_sock_create+0x185/0x350 net/bluetooth/af_bluetooth.c:132
__sock_create+0x338/0x8d0 net/socket.c:1558
sock_create net/socket.c:1616 [inline]
__sys_socket_create net/socket.c:1653 [inline]
__sys_socket+0x14f/0x260 net/socket.c:1700
__do_sys_socket net/socket.c:1714 [inline]
__se_sys_socket net/socket.c:1712 [inline]
__x64_sys_socket+0x72/0xb0 net/socket.c:1712
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
Freed by task 5305:
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:582
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:2353 [inline]
slab_free mm/slub.c:4613 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4761
sk_prot_free net/core/sock.c:2201 [inline]
__sk_destruct+0x5eb/0x720 net/core/sock.c:2293
sk_destruct+0xc2/0xf0 net/core/sock.c:2308
__sk_free+0xf4/0x3e0 net/core/sock.c:2319
sk_free+0x6a/0x90 net/core/sock.c:2330
sock_put include/net/sock.h:1910 [inline]
l2cap_sock_kill net/bluetooth/l2cap_sock.c:1252 [inline]
l2cap_sock_kill+0x171/0x2d0 net/bluetooth/l2cap_sock.c:1237
l2cap_sock_release+0x189/0x210 net/bluetooth/l2cap_sock.c:1423
__sock_release+0xb3/0x270 net/socket.c:640
sock_close+0x1c/0x30 net/socket.c:1408
__fput+0x3fb/0xb60 fs/file_table.c:450
task_work_run+0x151/0x250 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff8880796f8000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 96 bytes inside of
freed 2048-byte region [ffff8880796f8000, ffff8880796f8800)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x796f8
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 ffff88801b042000 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000080008 00000001f5000000 0000000000000000
head: 00fff00000000040 ffff88801b042000 dead000000000100 dead000000000122
head: 0000000000000000 0000000000080008 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea0001e5be01 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5832, tgid 5832 (syz-executor), ts 89674768841, free_ts 89673540971
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
prep_new_page mm/page_alloc.c:1566 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
__alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab mm/slub.c:2589 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2642
___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
__slab_alloc_node mm/slub.c:3995 [inline]
slab_alloc_node mm/slub.c:4156 [inline]
__kmalloc_cache_noprof+0xfa/0x410 mm/slub.c:4324
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
br_vlan_add+0x113/0xb40 net/bridge/br_vlan.c:786
br_vlan_bridge_event+0x42c/0x790 net/bridge/br_vlan.c:1739
br_device_event+0xf7/0x920 net/bridge/br.c:40
notifier_call_chain+0xba/0x410 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996
call_netdevice_notifiers_extack net/core/dev.c:2034 [inline]
call_netdevice_notifiers net/core/dev.c:2048 [inline]
register_netdevice+0x17a0/0x1e90 net/core/dev.c:10632
br_dev_newlink+0x27/0x110 net/bridge/br_netlink.c:1563
rtnl_newlink_create net/core/rtnetlink.c:3786 [inline]
__rtnl_newlink net/core/rtnetlink.c:3897 [inline]
rtnl_newlink+0xb98/0x1d60 net/core/rtnetlink.c:4012
page last free pid 5832 tgid 5832 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_page+0x661/0x1080 mm/page_alloc.c:2659
__put_partials+0x14c/0x170 mm/slub.c:3157
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:4119 [inline]
slab_alloc_node mm/slub.c:4168 [inline]
__kmalloc_cache_noprof+0x243/0x410 mm/slub.c:4324
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
ref_tracker_alloc+0x17c/0x5b0 lib/ref_tracker.c:203
__netdev_tracker_alloc include/linux/netdevice.h:4136 [inline]
netdev_hold include/linux/netdevice.h:4165 [inline]
netdev_hold include/linux/netdevice.h:4160 [inline]
netdev_queue_add_kobject net/core/net-sysfs.c:1786 [inline]
netdev_queue_update_kobjects+0x24c/0x5b0 net/core/net-sysfs.c:1841
register_queue_kobjects net/core/net-sysfs.c:1903 [inline]
netdev_register_kobject+0x28c/0x3a0 net/core/net-sysfs.c:2143
register_netdevice+0x1473/0x1e90 net/core/dev.c:10599
br_dev_newlink+0x27/0x110 net/bridge/br_netlink.c:1563
rtnl_newlink_create net/core/rtnetlink.c:3786 [inline]
__rtnl_newlink net/core/rtnetlink.c:3897 [inline]
rtnl_newlink+0xb98/0x1d60 net/core/rtnetlink.c:4012
rtnetlink_rcv_msg+0x95e/0xea0 net/core/rtnetlink.c:6922
netlink_rcv_skb+0x16e/0x440 net/netlink/af_netlink.c:2542
netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
netlink_unicast+0x53f/0x7f0 net/netlink/af_netlink.c:1347
netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891
Memory state around the buggy address:
ffff8880796f7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880796f7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880796f8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880796f8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880796f8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================