==================================================================
BUG: KASAN: slab-use-after-free in device_for_each_child+0x18f/0x1a0 drivers/base/core.c:3996
Read of size 8 at addr ffff888046dc9308 by task kbnepd bnep0/10649
CPU: 0 UID: 0 PID: 10649 Comm: kbnepd bnep0 Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
device_for_each_child+0x18f/0x1a0 drivers/base/core.c:3996
pm_runtime_set_memalloc_noio+0xf2/0x180 drivers/base/power/runtime.c:248
netdev_unregister_kobject+0x1ed/0x270 net/core/net-sysfs.c:2109
unregister_netdevice_many_notify+0x1055/0x1e50 net/core/dev.c:11441
unregister_netdevice_many net/core/dev.c:11469 [inline]
unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11343
unregister_netdevice include/linux/netdevice.h:3118 [inline]
unregister_netdev+0x1c/0x30 net/core/dev.c:11487
bnep_session+0x2210/0x2d60 net/bluetooth/bnep/core.c:525
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 9161:
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:257 [inline]
__do_kmalloc_node mm/slub.c:4264 [inline]
__kmalloc_noprof+0x1e8/0x400 mm/slub.c:4276
kmalloc_noprof include/linux/slab.h:883 [inline]
kzalloc_noprof include/linux/slab.h:1015 [inline]
hci_alloc_dev_priv+0x1d/0x2820 net/bluetooth/hci_core.c:2440
hci_alloc_dev include/net/bluetooth/hci_core.h:1621 [inline]
__vhci_create_device+0xef/0x7d0 drivers/bluetooth/hci_vhci.c:399
vhci_create_device drivers/bluetooth/hci_vhci.c:470 [inline]
vhci_get_user drivers/bluetooth/hci_vhci.c:527 [inline]
vhci_write+0x2c3/0x470 drivers/bluetooth/hci_vhci.c:607
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x5b1/0x1150 fs/read_write.c:679
ksys_write+0x12b/0x250 fs/read_write.c:731
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 9161:
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 mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2342 [inline]
slab_free mm/slub.c:4579 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4727
hci_release_dev+0x4d9/0x600 net/bluetooth/hci_core.c:2759
bt_host_release+0x6a/0xb0 net/bluetooth/hci_sysfs.c:94
device_release+0xa4/0x240 drivers/base/core.c:2574
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1e7/0x5a0 lib/kobject.c:737
put_device+0x1f/0x30 drivers/base/core.c:3780
vhci_release+0x81/0xf0 drivers/bluetooth/hci_vhci.c:665
__fput+0x3fb/0xb60 fs/file_table.c:450
task_work_run+0x151/0x250 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xadd/0x2d70 kernel/exit.c:938
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
__do_sys_exit_group kernel/exit.c:1098 [inline]
__se_sys_exit_group kernel/exit.c:1096 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1096
x64_sys_call+0x151f/0x1720 arch/x86/include/generated/asm/syscalls_64.h:232
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
Last potentially related work creation:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
__kasan_record_aux_stack+0xba/0xd0 mm/kasan/generic.c:541
insert_work+0x36/0x230 kernel/workqueue.c:2183
__queue_work+0x97e/0x1080 kernel/workqueue.c:2339
queue_work_on+0x11a/0x140 kernel/workqueue.c:2390
queue_work include/linux/workqueue.h:662 [inline]
hci_recv_frame+0x23f/0x7e0 net/bluetooth/hci_core.c:2946
vhci_get_user drivers/bluetooth/hci_vhci.c:511 [inline]
vhci_write+0x385/0x470 drivers/bluetooth/hci_vhci.c:607
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x5b1/0x1150 fs/read_write.c:679
ksys_write+0x12b/0x250 fs/read_write.c:731
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
Second to last potentially related work creation:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
__kasan_record_aux_stack+0xba/0xd0 mm/kasan/generic.c:541
insert_work+0x36/0x230 kernel/workqueue.c:2183
__queue_work+0x97e/0x1080 kernel/workqueue.c:2339
queue_work_on+0x11a/0x140 kernel/workqueue.c:2390
queue_work include/linux/workqueue.h:662 [inline]
hci_recv_frame+0x23f/0x7e0 net/bluetooth/hci_core.c:2946
vhci_get_user drivers/bluetooth/hci_vhci.c:511 [inline]
vhci_write+0x385/0x470 drivers/bluetooth/hci_vhci.c:607
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x5b1/0x1150 fs/read_write.c:679
ksys_write+0x12b/0x250 fs/read_write.c:731
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
The buggy address belongs to the object at ffff888046dc8000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 4872 bytes inside of
freed 8192-byte region [ffff888046dc8000, ffff888046dca000)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x46dc8
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 ffff88801b042280 ffffea000048b800 dead000000000006
raw: 0000000000000000 0000000080020002 00000001f5000000 0000000000000000
head: 00fff00000000040 ffff88801b042280 ffffea000048b800 dead000000000006
head: 0000000000000000 0000000080020002 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea00011b7201 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 7936, tgid 7936 (syz-executor), ts 367394172874, free_ts 367387947061
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556
prep_new_page mm/page_alloc.c:1564 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474
__alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4751
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
alloc_slab_page mm/slub.c:2412 [inline]
allocate_slab mm/slub.c:2578 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2631
___slab_alloc+0xdac/0x1880 mm/slub.c:3818
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
__slab_alloc_node mm/slub.c:3961 [inline]
slab_alloc_node mm/slub.c:4122 [inline]
__do_kmalloc_node mm/slub.c:4263 [inline]
__kmalloc_noprof+0x367/0x400 mm/slub.c:4276
kmalloc_noprof include/linux/slab.h:883 [inline]
kmalloc_array_noprof include/linux/slab.h:924 [inline]
batadv_hash_new+0x74/0x2e0 net/batman-adv/hash.c:52
batadv_tt_global_init net/batman-adv/translation-table.c:1402 [inline]
batadv_tt_init+0x278/0x350 net/batman-adv/translation-table.c:4163
batadv_mesh_init+0x4e3/0x9a0 net/batman-adv/main.c:200
batadv_softif_init_late+0xbde/0xf40 net/batman-adv/soft-interface.c:812
register_netdevice+0x675/0x1e90 net/core/dev.c:10422
batadv_softif_newlink+0x70/0x90 net/batman-adv/soft-interface.c:1089
rtnl_newlink_create net/core/rtnetlink.c:3539 [inline]
__rtnl_newlink+0x119a/0x1920 net/core/rtnetlink.c:3759
rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3772
page last free pid 6632 tgid 6632 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:2657
__put_partials+0x14c/0x170 mm/slub.c:3145
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:247 [inline]
slab_post_alloc_hook mm/slub.c:4085 [inline]
slab_alloc_node mm/slub.c:4134 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4141
getname_flags.part.0+0x4c/0x550 fs/namei.c:139
getname_flags+0x93/0xf0 include/linux/audit.h:322
user_path_at+0x24/0x60 fs/namei.c:3069
ksys_umount fs/namespace.c:2033 [inline]
__do_sys_umount fs/namespace.c:2041 [inline]
__se_sys_umount fs/namespace.c:2039 [inline]
__x64_sys_umount+0x10b/0x1a0 fs/namespace.c:2039
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:
ffff888046dc9200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888046dc9280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888046dc9300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888046dc9380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888046dc9400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in klist_next+0x468/0x500 lib/klist.c:377
Read of size 8 at addr ffff8880279afc58 by task kbnepd bnep0/10649
CPU: 1 UID: 0 PID: 10649 Comm: kbnepd bnep0 Tainted: G B 6.12.0-syzkaller-01518-ga5c93bfec0be #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
klist_next+0x468/0x500 lib/klist.c:377
next_device drivers/base/core.c:3922 [inline]
device_for_each_child+0xdc/0x1a0 drivers/base/core.c:4000
pm_runtime_set_memalloc_noio+0xf2/0x180 drivers/base/power/runtime.c:248
netdev_unregister_kobject+0x1ed/0x270 net/core/net-sysfs.c:2109
unregister_netdevice_many_notify+0x1055/0x1e50 net/core/dev.c:11441
unregister_netdevice_many net/core/dev.c:11469 [inline]
unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11343
unregister_netdevice include/linux/netdevice.h:3118 [inline]
unregister_netdev+0x1c/0x30 net/core/dev.c:11487
bnep_session+0x2210/0x2d60 net/bluetooth/bnep/core.c:525
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 9161:
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
kmalloc_noprof include/linux/slab.h:879 [inline]
kzalloc_noprof include/linux/slab.h:1015 [inline]
device_private_init drivers/base/core.c:3517 [inline]
device_add+0xccf/0x1a70 drivers/base/core.c:3568
hci_register_dev+0x328/0xc60 net/bluetooth/hci_core.c:2607
__vhci_create_device+0x344/0x7d0 drivers/bluetooth/hci_vhci.c:428
vhci_create_device drivers/bluetooth/hci_vhci.c:470 [inline]
vhci_get_user drivers/bluetooth/hci_vhci.c:527 [inline]
vhci_write+0x2c3/0x470 drivers/bluetooth/hci_vhci.c:607
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x5b1/0x1150 fs/read_write.c:679
ksys_write+0x12b/0x250 fs/read_write.c:731
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 9161:
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 mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2342 [inline]
slab_free mm/slub.c:4579 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4727
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1e7/0x5a0 lib/kobject.c:737
put_device+0x1f/0x30 drivers/base/core.c:3780
vhci_release+0x81/0xf0 drivers/bluetooth/hci_vhci.c:665
__fput+0x3fb/0xb60 fs/file_table.c:450
task_work_run+0x151/0x250 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xadd/0x2d70 kernel/exit.c:938
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
__do_sys_exit_group kernel/exit.c:1098 [inline]
__se_sys_exit_group kernel/exit.c:1096 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1096
x64_sys_call+0x151f/0x1720 arch/x86/include/generated/asm/syscalls_64.h:232
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
The buggy address belongs to the object at ffff8880279afc00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 88 bytes inside of
freed 512-byte region [ffff8880279afc00, ffff8880279afe00)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880279acc00 pfn:0x279ac
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b041c80 ffffea0001ed0510 ffffea00011cdf10
raw: ffff8880279acc00 0000000000100003 00000001f5000000 0000000000000000
head: 00fff00000000240 ffff88801b041c80 ffffea0001ed0510 ffffea00011cdf10
head: ffff8880279acc00 0000000000100003 00000001f5000000 0000000000000000
head: 00fff00000000002 ffffea00009e6b01 ffffffffffffffff 0000000000000000
head: ffff888000000004 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 11, tgid 11 (kworker/u8:0), ts 99999205401, free_ts 98420315877
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556
prep_new_page mm/page_alloc.c:1564 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474
__alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4751
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
alloc_slab_page mm/slub.c:2412 [inline]
allocate_slab mm/slub.c:2578 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2631
___slab_alloc+0xdac/0x1880 mm/slub.c:3818
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
__slab_alloc_node mm/slub.c:3961 [inline]
slab_alloc_node mm/slub.c:4122 [inline]
__kmalloc_cache_noprof+0x2b4/0x300 mm/slub.c:4290
kmalloc_noprof include/linux/slab.h:879 [inline]
batadv_forw_packet_alloc+0x3ac/0x4e0 net/batman-adv/send.c:519
batadv_iv_ogm_aggregate_new+0x132/0x4a0 net/batman-adv/bat_iv_ogm.c:562
batadv_iv_ogm_queue_add net/batman-adv/bat_iv_ogm.c:670 [inline]
batadv_iv_ogm_schedule_buff+0x99b/0x14d0 net/batman-adv/bat_iv_ogm.c:833
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x31e/0x8d0 net/batman-adv/bat_iv_ogm.c:1712
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
page last free pid 5212 tgid 5212 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:2657
__put_partials+0x14c/0x170 mm/slub.c:3145
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:247 [inline]
slab_post_alloc_hook mm/slub.c:4085 [inline]
slab_alloc_node mm/slub.c:4134 [inline]
__do_kmalloc_node mm/slub.c:4263 [inline]
__kmalloc_node_noprof+0x1c3/0x430 mm/slub.c:4270
__kvmalloc_node_noprof+0xad/0x1a0 mm/util.c:658
seq_buf_alloc fs/seq_file.c:38 [inline]
seq_read_iter+0x82a/0x12b0 fs/seq_file.c:210
kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x882/0xbe0 fs/read_write.c:565
ksys_read+0x12b/0x250 fs/read_write.c:708
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:
ffff8880279afb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880279afb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880279afc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880279afc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880279afd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x271/0x2c0 kernel/locking/spinlock_debug.c:115
Read of size 4 at addr ffff8880279afc04 by task kbnepd bnep0/10649
CPU: 1 UID: 0 PID: 10649 Comm: kbnepd bnep0 Tainted: G B 6.12.0-syzkaller-01518-ga5c93bfec0be #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
do_raw_spin_lock+0x271/0x2c0 kernel/locking/spinlock_debug.c:115
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0x42/0x60 kernel/locking/spinlock.c:162
klist_next+0x86/0x500 lib/klist.c:382
next_device drivers/base/core.c:3922 [inline]
device_for_each_child+0xdc/0x1a0 drivers/base/core.c:4000
pm_runtime_set_memalloc_noio+0xf2/0x180 drivers/base/power/runtime.c:248
netdev_unregister_kobject+0x1ed/0x270 net/core/net-sysfs.c:2109
unregister_netdevice_many_notify+0x1055/0x1e50 net/core/dev.c:11441
unregister_netdevice_many net/core/dev.c:11469 [inline]
unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11343
unregister_netdevice include/linux/netdevice.h:3118 [inline]
unregister_netdev+0x1c/0x30 net/core/dev.c:11487
bnep_session+0x2210/0x2d60 net/bluetooth/bnep/core.c:525
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 9161:
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
kmalloc_noprof include/linux/slab.h:879 [inline]
kzalloc_noprof include/linux/slab.h:1015 [inline]
device_private_init drivers/base/core.c:3517 [inline]
device_add+0xccf/0x1a70 drivers/base/core.c:3568
hci_register_dev+0x328/0xc60 net/bluetooth/hci_core.c:2607
__vhci_create_device+0x344/0x7d0 drivers/bluetooth/hci_vhci.c:428
vhci_create_device drivers/bluetooth/hci_vhci.c:470 [inline]
vhci_get_user drivers/bluetooth/hci_vhci.c:527 [inline]
vhci_write+0x2c3/0x470 drivers/bluetooth/hci_vhci.c:607
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x5b1/0x1150 fs/read_write.c:679
ksys_write+0x12b/0x250 fs/read_write.c:731
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 9161:
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 mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2342 [inline]
slab_free mm/slub.c:4579 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4727
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1e7/0x5a0 lib/kobject.c:737
put_device+0x1f/0x30 drivers/base/core.c:3780
vhci_release+0x81/0xf0 drivers/bluetooth/hci_vhci.c:665
__fput+0x3fb/0xb60 fs/file_table.c:450
task_work_run+0x151/0x250 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xadd/0x2d70 kernel/exit.c:938
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
__do_sys_exit_group kernel/exit.c:1098 [inline]
__se_sys_exit_group kernel/exit.c:1096 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1096
x64_sys_call+0x151f/0x1720 arch/x86/include/generated/asm/syscalls_64.h:232
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
The buggy address belongs to the object at ffff8880279afc00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 4 bytes inside of
freed 512-byte region [ffff8880279afc00, ffff8880279afe00)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880279acc00 pfn:0x279ac
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b041c80 ffffea0001ed0510 ffffea00011cdf10
raw: ffff8880279acc00 0000000000100003 00000001f5000000 0000000000000000
head: 00fff00000000240 ffff88801b041c80 ffffea0001ed0510 ffffea00011cdf10
head: ffff8880279acc00 0000000000100003 00000001f5000000 0000000000000000
head: 00fff00000000002 ffffea00009e6b01 ffffffffffffffff 0000000000000000
head: ffff888000000004 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 11, tgid 11 (kworker/u8:0), ts 99999205401, free_ts 98420315877
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556
prep_new_page mm/page_alloc.c:1564 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474
__alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4751
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
alloc_slab_page mm/slub.c:2412 [inline]
allocate_slab mm/slub.c:2578 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2631
___slab_alloc+0xdac/0x1880 mm/slub.c:3818
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
__slab_alloc_node mm/slub.c:3961 [inline]
slab_alloc_node mm/slub.c:4122 [inline]
__kmalloc_cache_noprof+0x2b4/0x300 mm/slub.c:4290
kmalloc_noprof include/linux/slab.h:879 [inline]
batadv_forw_packet_alloc+0x3ac/0x4e0 net/batman-adv/send.c:519
batadv_iv_ogm_aggregate_new+0x132/0x4a0 net/batman-adv/bat_iv_ogm.c:562
batadv_iv_ogm_queue_add net/batman-adv/bat_iv_ogm.c:670 [inline]
batadv_iv_ogm_schedule_buff+0x99b/0x14d0 net/batman-adv/bat_iv_ogm.c:833
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x31e/0x8d0 net/batman-adv/bat_iv_ogm.c:1712
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
page last free pid 5212 tgid 5212 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:2657
__put_partials+0x14c/0x170 mm/slub.c:3145
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:247 [inline]
slab_post_alloc_hook mm/slub.c:4085 [inline]
slab_alloc_node mm/slub.c:4134 [inline]
__do_kmalloc_node mm/slub.c:4263 [inline]
__kmalloc_node_noprof+0x1c3/0x430 mm/slub.c:4270
__kvmalloc_node_noprof+0xad/0x1a0 mm/util.c:658
seq_buf_alloc fs/seq_file.c:38 [inline]
seq_read_iter+0x82a/0x12b0 fs/seq_file.c:210
kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x882/0xbe0 fs/read_write.c:565
ksys_read+0x12b/0x250 fs/read_write.c:708
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:
ffff8880279afb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880279afb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880279afc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880279afc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880279afd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:87 [inline]
BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x281/0x2c0 kernel/locking/spinlock_debug.c:115
Read of size 8 at addr ffff8880279afc10 by task kbnepd bnep0/10649
CPU: 1 UID: 0 PID: 10649 Comm: kbnepd bnep0 Tainted: G B 6.12.0-syzkaller-01518-ga5c93bfec0be #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
debug_spin_lock_before kernel/locking/spinlock_debug.c:87 [inline]
do_raw_spin_lock+0x281/0x2c0 kernel/locking/spinlock_debug.c:115
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0x42/0x60 kernel/locking/spinlock.c:162
klist_next+0x86/0x500 lib/klist.c:382
next_device drivers/base/core.c:3922 [inline]
device_for_each_child+0xdc/0x1a0 drivers/base/core.c:4000
pm_runtime_set_memalloc_noio+0xf2/0x180 drivers/base/power/runtime.c:248
netdev_unregister_kobject+0x1ed/0x270 net/core/net-sysfs.c:2109
unregister_netdevice_many_notify+0x1055/0x1e50 net/core/dev.c:11441
unregister_netdevice_many net/core/dev.c:11469 [inline]
unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11343
unregister_netdevice include/linux/netdevice.h:3118 [inline]
unregister_netdev+0x1c/0x30 net/core/dev.c:11487
bnep_session+0x2210/0x2d60 net/bluetooth/bnep/core.c:525
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 9161:
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
kmalloc_noprof include/linux/slab.h:879 [inline]
kzalloc_noprof include/linux/slab.h:1015 [inline]
device_private_init drivers/base/core.c:3517 [inline]
device_add+0xccf/0x1a70 drivers/base/core.c:3568
hci_register_dev+0x328/0xc60 net/bluetooth/hci_core.c:2607
__vhci_create_device+0x344/0x7d0 drivers/bluetooth/hci_vhci.c:428
vhci_create_device drivers/bluetooth/hci_vhci.c:470 [inline]
vhci_get_user drivers/bluetooth/hci_vhci.c:527 [inline]
vhci_write+0x2c3/0x470 drivers/bluetooth/hci_vhci.c:607
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x5b1/0x1150 fs/read_write.c:679
ksys_write+0x12b/0x250 fs/read_write.c:731
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 9161:
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 mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2342 [inline]
slab_free mm/slub.c:4579 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4727
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1e7/0x5a0 lib/kobject.c:737
put_device+0x1f/0x30 drivers/base/core.c:3780
vhci_release+0x81/0xf0 drivers/bluetooth/hci_vhci.c:665
__fput+0x3fb/0xb60 fs/file_table.c:450
task_work_run+0x151/0x250 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xadd/0x2d70 kernel/exit.c:938
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
__do_sys_exit_group kernel/exit.c:1098 [inline]
__se_sys_exit_group kernel/exit.c:1096 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1096
x64_sys_call+0x151f/0x1720 arch/x86/include/generated/asm/syscalls_64.h:232
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
The buggy address belongs to the object at ffff8880279afc00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 16 bytes inside of
freed 512-byte region [ffff8880279afc00, ffff8880279afe00)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880279acc00 pfn:0x279ac
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b041c80 ffffea0001ed0510 ffffea00011cdf10
raw: ffff8880279acc00 0000000000100003 00000001f5000000 0000000000000000
head: 00fff00000000240 ffff88801b041c80 ffffea0001ed0510 ffffea00011cdf10
head: ffff8880279acc00 0000000000100003 00000001f5000000 0000000000000000
head: 00fff00000000002 ffffea00009e6b01 ffffffffffffffff 0000000000000000
head: ffff888000000004 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 11, tgid 11 (kworker/u8:0), ts 99999205401, free_ts 98420315877
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556
prep_new_page mm/page_alloc.c:1564 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474
__alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4751
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
alloc_slab_page mm/slub.c:2412 [inline]
allocate_slab mm/slub.c:2578 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2631
___slab_alloc+0xdac/0x1880 mm/slub.c:3818
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
__slab_alloc_node mm/slub.c:3961 [inline]
slab_alloc_node mm/slub.c:4122 [inline]
__kmalloc_cache_noprof+0x2b4/0x300 mm/slub.c:4290
kmalloc_noprof include/linux/slab.h:879 [inline]
batadv_forw_packet_alloc+0x3ac/0x4e0 net/batman-adv/send.c:519
batadv_iv_ogm_aggregate_new+0x132/0x4a0 net/batman-adv/bat_iv_ogm.c:562
batadv_iv_ogm_queue_add net/batman-adv/bat_iv_ogm.c:670 [inline]
batadv_iv_ogm_schedule_buff+0x99b/0x14d0 net/batman-adv/bat_iv_ogm.c:833
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x31e/0x8d0 net/batman-adv/bat_iv_ogm.c:1712
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
page last free pid 5212 tgid 5212 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:2657
__put_partials+0x14c/0x170 mm/slub.c:3145
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:247 [inline]
slab_post_alloc_hook mm/slub.c:4085 [inline]
slab_alloc_node mm/slub.c:4134 [inline]
__do_kmalloc_node mm/slub.c:4263 [inline]
__kmalloc_node_noprof+0x1c3/0x430 mm/slub.c:4270
__kvmalloc_node_noprof+0xad/0x1a0 mm/util.c:658
seq_buf_alloc fs/seq_file.c:38 [inline]
seq_read_iter+0x82a/0x12b0 fs/seq_file.c:210
kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x882/0xbe0 fs/read_write.c:565
ksys_read+0x12b/0x250 fs/read_write.c:708
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:
ffff8880279afb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880279afb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880279afc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880279afc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880279afd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:88 [inline]
BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x267/0x2c0 kernel/locking/spinlock_debug.c:115
Read of size 4 at addr ffff8880279afc08 by task kbnepd bnep0/10649
CPU: 1 UID: 0 PID: 10649 Comm: kbnepd bnep0 Tainted: G B 6.12.0-syzkaller-01518-ga5c93bfec0be #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
debug_spin_lock_before kernel/locking/spinlock_debug.c:88 [inline]
do_raw_spin_lock+0x267/0x2c0 kernel/locking/spinlock_debug.c:115
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0x42/0x60 kernel/locking/spinlock.c:162
klist_next+0x86/0x500 lib/klist.c:382
next_device drivers/base/core.c:3922 [inline]
device_for_each_child+0xdc/0x1a0 drivers/base/core.c:4000
pm_runtime_set_memalloc_noio+0xf2/0x180 drivers/base/power/runtime.c:248
netdev_unregister_kobject+0x1ed/0x270 net/core/net-sysfs.c:2109
unregister_netdevice_many_notify+0x1055/0x1e50 net/core/dev.c:11441
unregister_netdevice_many net/core/dev.c:11469 [inline]
unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11343
unregister_netdevice include/linux/netdevice.h:3118 [inline]
unregister_netdev+0x1c/0x30 net/core/dev.c:11487
bnep_session+0x2210/0x2d60 net/bluetooth/bnep/core.c:525
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 9161:
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
kmalloc_noprof include/linux/slab.h:879 [inline]
kzalloc_noprof include/linux/slab.h:1015 [inline]
device_private_init drivers/base/core.c:3517 [inline]
device_add+0xccf/0x1a70 drivers/base/core.c:3568
hci_register_dev+0x328/0xc60 net/bluetooth/hci_core.c:2607
__vhci_create_device+0x344/0x7d0 drivers/bluetooth/hci_vhci.c:428
vhci_create_device drivers/bluetooth/hci_vhci.c:470 [inline]
vhci_get_user drivers/bluetooth/hci_vhci.c:527 [inline]
vhci_write+0x2c3/0x470 drivers/bluetooth/hci_vhci.c:607
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x5b1/0x1150 fs/read_write.c:679
ksys_write+0x12b/0x250 fs/read_write.c:731
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 9161:
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 mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2342 [inline]
slab_free mm/slub.c:4579 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4727
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1e7/0x5a0 lib/kobject.c:737
put_device+0x1f/0x30 drivers/base/core.c:3780
vhci_release+0x81/0xf0 drivers/bluetooth/hci_vhci.c:665
__fput+0x3fb/0xb60 fs/file_table.c:450
task_work_run+0x151/0x250 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xadd/0x2d70 kernel/exit.c:938
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
__do_sys_exit_group kernel/exit.c:1098 [inline]
__se_sys_exit_group kernel/exit.c:1096 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1096
x64_sys_call+0x151f/0x1720 arch/x86/include/generated/asm/syscalls_64.h:232
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
The buggy address belongs to the object at ffff8880279afc00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff8880279afc00, ffff8880279afe00)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880279acc00 pfn:0x279ac
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b041c80 ffffea0001ed0510 ffffea00011cdf10
raw: ffff8880279acc00 0000000000100003 00000001f5000000 0000000000000000
head: 00fff00000000240 ffff88801b041c80 ffffea0001ed0510 ffffea00011cdf10
head: ffff8880279acc00 0000000000100003 00000001f5000000 0000000000000000
head: 00fff00000000002 ffffea00009e6b01 ffffffffffffffff 0000000000000000
head: ffff888000000004 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 11, tgid 11 (kworker/u8:0), ts 99999205401, free_ts 98420315877
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556
prep_new_page mm/page_alloc.c:1564 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474
__alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4751
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
alloc_slab_page mm/slub.c:2412 [inline]
allocate_slab mm/slub.c:2578 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2631
___slab_alloc+0xdac/0x1880 mm/slub.c:3818
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
__slab_alloc_node mm/slub.c:3961 [inline]
slab_alloc_node mm/slub.c:4122 [inline]
__kmalloc_cache_noprof+0x2b4/0x300 mm/slub.c:4290
kmalloc_noprof include/linux/slab.h:879 [inline]
batadv_forw_packet_alloc+0x3ac/0x4e0 net/batman-adv/send.c:519
batadv_iv_ogm_aggregate_new+0x132/0x4a0 net/batman-adv/bat_iv_ogm.c:562
batadv_iv_ogm_queue_add net/batman-adv/bat_iv_ogm.c:670 [inline]
batadv_iv_ogm_schedule_buff+0x99b/0x14d0 net/batman-adv/bat_iv_ogm.c:833
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x31e/0x8d0 net/batman-adv/bat_iv_ogm.c:1712
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
page last free pid 5212 tgid 5212 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:2657
__put_partials+0x14c/0x170 mm/slub.c:3145
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:247 [inline]
slab_post_alloc_hook mm/slub.c:4085 [inline]
slab_alloc_node mm/slub.c:4134 [inline]
__do_kmalloc_node mm/slub.c:4263 [inline]
__kmalloc_node_noprof+0x1c3/0x430 mm/slub.c:4270
__kvmalloc_node_noprof+0xad/0x1a0 mm/util.c:658
seq_buf_alloc fs/seq_file.c:38 [inline]
seq_read_iter+0x82a/0x12b0 fs/seq_file.c:210
kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x882/0xbe0 fs/read_write.c:565
ksys_read+0x12b/0x250 fs/read_write.c:708
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:
ffff8880279afb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880279afb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880279afc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880279afc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880279afd00: 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_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: slab-use-after-free in atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1300 [inline]
BUG: KASAN: slab-use-after-free in queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]
BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x11e/0x2c0 kernel/locking/spinlock_debug.c:116
Write of size 4 at addr ffff8880279afc00 by task kbnepd bnep0/10649
CPU: 1 UID: 0 PID: 10649 Comm: kbnepd bnep0 Tainted: G B 6.12.0-syzkaller-01518-ga5c93bfec0be #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
check_region_inline mm/kasan/generic.c:183 [inline]
kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189
instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1300 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]
do_raw_spin_lock+0x11e/0x2c0 kernel/locking/spinlock_debug.c:116
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0x42/0x60 kernel/locking/spinlock.c:162
klist_next+0x86/0x500 lib/klist.c:382
next_device drivers/base/core.c:3922 [inline]
device_for_each_child+0xdc/0x1a0 drivers/base/core.c:4000
pm_runtime_set_memalloc_noio+0xf2/0x180 drivers/base/power/runtime.c:248
netdev_unregister_kobject+0x1ed/0x270 net/core/net-sysfs.c:2109
unregister_netdevice_many_notify+0x1055/0x1e50 net/core/dev.c:11441
unregister_netdevice_many net/core/dev.c:11469 [inline]
unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11343
unregister_netdevice include/linux/netdevice.h:3118 [inline]
unregister_netdev+0x1c/0x30 net/core/dev.c:11487
bnep_session+0x2210/0x2d60 net/bluetooth/bnep/core.c:525
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 9161:
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
kmalloc_noprof include/linux/slab.h:879 [inline]
kzalloc_noprof include/linux/slab.h:1015 [inline]
device_private_init drivers/base/core.c:3517 [inline]
device_add+0xccf/0x1a70 drivers/base/core.c:3568
hci_register_dev+0x328/0xc60 net/bluetooth/hci_core.c:2607
__vhci_create_device+0x344/0x7d0 drivers/bluetooth/hci_vhci.c:428
vhci_create_device drivers/bluetooth/hci_vhci.c:470 [inline]
vhci_get_user drivers/bluetooth/hci_vhci.c:527 [inline]
vhci_write+0x2c3/0x470 drivers/bluetooth/hci_vhci.c:607
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x5b1/0x1150 fs/read_write.c:679
ksys_write+0x12b/0x250 fs/read_write.c:731
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 9161:
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 mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2342 [inline]
slab_free mm/slub.c:4579 [inline]
kfree+0x14f/0x4b0 mm/slub.c:4727
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1e7/0x5a0 lib/kobject.c:737
put_device+0x1f/0x30 drivers/base/core.c:3780
vhci_release+0x81/0xf0 drivers/bluetooth/hci_vhci.c:665
__fput+0x3fb/0xb60 fs/file_table.c:450
task_work_run+0x151/0x250 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xadd/0x2d70 kernel/exit.c:938
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
__do_sys_exit_group kernel/exit.c:1098 [inline]
__se_sys_exit_group kernel/exit.c:1096 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1096
x64_sys_call+0x151f/0x1720 arch/x86/include/generated/asm/syscalls_64.h:232
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
The buggy address belongs to the object at ffff8880279afc00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 0 bytes inside of
freed 512-byte region [ffff8880279afc00, ffff8880279afe00)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880279acc00 pfn:0x279ac
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b041c80 ffffea0001ed0510 ffffea00011cdf10
raw: ffff8880279acc00 0000000000100003 00000001f5000000 0000000000000000
head: 00fff00000000240 ffff88801b041c80 ffffea0001ed0510 ffffea00011cdf10
head: ffff8880279acc00 0000000000100003 00000001f5000000 0000000000000000
head: 00fff00000000002 ffffea00009e6b01 ffffffffffffffff 0000000000000000
head: ffff888000000004 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 11, tgid 11 (kworker/u8:0), ts 99999205401, free_ts 98420315877
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556
prep_new_page mm/page_alloc.c:1564 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474
__alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4751
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
alloc_slab_page mm/slub.c:2412 [inline]
allocate_slab mm/slub.c:2578 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2631
___slab_alloc+0xdac/0x1880 mm/slub.c:3818
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
__slab_alloc_node mm/slub.c:3961 [inline]
slab_alloc_node mm/slub.c:4122 [inline]
__kmalloc_cache_noprof+0x2b4/0x300 mm/slub.c:4290
kmalloc_noprof include/linux/slab.h:879 [inline]
batadv_forw_packet_alloc+0x3ac/0x4e0 net/batman-adv/send.c:519
batadv_iv_ogm_aggregate_new+0x132/0x4a0 net/batman-adv/bat_iv_ogm.c:562
batadv_iv_ogm_queue_add net/batman-adv/bat_iv_ogm.c:670 [inline]
batadv_iv_ogm_schedule_buff+0x99b/0x14d0 net/batman-adv/bat_iv_ogm.c:833
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x31e/0x8d0 net/batman-adv/bat_iv_ogm.c:1712
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
page last free pid 5212 tgid 5212 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:2657
__put_partials+0x14c/0x170 mm/slub.c:3145
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:247 [inline]
slab_post_alloc_hook mm/slub.c:4085 [inline]
slab_alloc_node mm/slub.c:4134 [inline]
__do_kmalloc_node mm/slub.c:4263 [inline]
__kmalloc_node_noprof+0x1c3/0x430 mm/slub.c:4270
__kvmalloc_node_noprof+0xad/0x1a0 mm/util.c:658
seq_buf_alloc fs/seq_file.c:38 [inline]
seq_read_iter+0x82a/0x12b0 fs/seq_file.c:210
kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x882/0xbe0 fs/read_write.c:565
ksys_read+0x12b/0x250 fs/read_write.c:708
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:
ffff8880279afb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880279afb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880279afc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880279afc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880279afd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================