KASAN: slab-use-after-free Read in hci_cmd_work
Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
==================================================================
BUG: KASAN: slab-use-after-free in hci_cmd_work+0x5d0/0x7b0 net/bluetooth/hci_core.c:4174
Read of size 2 at addr ffff888029991178 by task kworker/u9:0/53
CPU: 0 UID: 0 PID: 53 Comm: kworker/u9:0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: hci0 hci_cmd_work
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0xca/0x240 mm/kasan/report.c:482
kasan_report+0x118/0x150 mm/kasan/report.c:595
hci_cmd_work+0x5d0/0x7b0 net/bluetooth/hci_core.c:4174
process_one_work+0x93a/0x15e0 kernel/workqueue.c:3261
process_scheduled_works kernel/workqueue.c:3344 [inline]
worker_thread+0x9b0/0xee0 kernel/workqueue.c:3425
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
Allocated by task 5153:
kasan_save_stack mm/kasan/common.c:56 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
unpoison_slab_object mm/kasan/common.c:339 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:365
kasan_slab_alloc include/linux/kasan.h:252 [inline]
slab_post_alloc_hook mm/slub.c:4948 [inline]
slab_alloc_node mm/slub.c:5258 [inline]
kmem_cache_alloc_node_noprof+0x43c/0x710 mm/slub.c:5310
__alloc_skb+0x112/0x2d0 net/core/skbuff.c:664
alloc_skb include/linux/skbuff.h:1383 [inline]
bt_skb_alloc include/net/bluetooth/bluetooth.h:510 [inline]
hci_cmd_sync_alloc+0x3d/0x3b0 net/bluetooth/hci_sync.c:58
hci_cmd_sync_add net/bluetooth/hci_sync.c:99 [inline]
__hci_cmd_sync_sk+0x1a7/0xc70 net/bluetooth/hci_sync.c:168
__hci_cmd_sync_status_sk net/bluetooth/hci_sync.c:263 [inline]
__hci_cmd_sync_status net/bluetooth/hci_sync.c:287 [inline]
hci_read_local_version_sync net/bluetooth/hci_sync.c:3634 [inline]
hci_init_stage_sync net/bluetooth/hci_sync.c:3623 [inline]
hci_init1_sync net/bluetooth/hci_sync.c:3755 [inline]
hci_init_sync net/bluetooth/hci_sync.c:4874 [inline]
hci_dev_init_sync net/bluetooth/hci_sync.c:5066 [inline]
hci_dev_open_sync+0x163e/0x2dc0 net/bluetooth/hci_sync.c:5144
hci_dev_do_open net/bluetooth/hci_core.c:430 [inline]
hci_power_on+0x1b4/0x720 net/bluetooth/hci_core.c:959
process_one_work+0x93a/0x15e0 kernel/workqueue.c:3261
process_scheduled_works kernel/workqueue.c:3344 [inline]
worker_thread+0x9b0/0xee0 kernel/workqueue.c:3425
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
Freed by task 5921:
kasan_save_stack mm/kasan/common.c:56 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:252 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284
kasan_slab_free include/linux/kasan.h:234 [inline]
slab_free_hook mm/slub.c:2540 [inline]
slab_free mm/slub.c:6663 [inline]
kmem_cache_free+0x197/0x640 mm/slub.c:6774
kfree_skb_reason include/linux/skbuff.h:1322 [inline]
kfree_skb include/linux/skbuff.h:1331 [inline]
vhci_read+0x49a/0x5b0 drivers/bluetooth/hci_vhci.c:593
vfs_read+0x200/0xa30 fs/read_write.c:570
ksys_read+0x145/0x250 fs/read_write.c:715
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff888029991140
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 56 bytes inside of
freed 240-byte region [ffff888029991140, ffff888029991230)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x29991
ksm flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff88801da8a000 ffffea000072ab00 dead000000000003
raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5210, tgid 5210 (udevd), ts 45027661085, free_ts 45004941492
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3920
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5215
alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2486
alloc_slab_page mm/slub.c:3075 [inline]
allocate_slab+0x86/0x3b0 mm/slub.c:3248
new_slab mm/slub.c:3302 [inline]
___slab_alloc+0xf56/0x1990 mm/slub.c:4651
__slab_alloc+0x65/0x100 mm/slub.c:4774
__slab_alloc_node mm/slub.c:4850 [inline]
slab_alloc_node mm/slub.c:5246 [inline]
kmem_cache_alloc_node_noprof+0x4ce/0x710 mm/slub.c:5310
__alloc_skb+0x112/0x2d0 net/core/skbuff.c:664
alloc_skb include/linux/skbuff.h:1383 [inline]
alloc_skb_with_frags+0xca/0x890 net/core/skbuff.c:6694
sock_alloc_send_pskb+0x84d/0x980 net/core/sock.c:2995
unix_dgram_sendmsg+0x461/0x1850 net/unix/af_unix.c:2133
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg+0x21c/0x270 net/socket.c:746
sock_write_iter+0x279/0x360 net/socket.c:1199
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x5c9/0xb30 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
page last free pid 5216 tgid 5216 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbc8/0xd30 mm/page_alloc.c:2948
__slab_free+0x21b/0x2a0 mm/slub.c:5999
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:349
kasan_slab_alloc include/linux/kasan.h:252 [inline]
slab_post_alloc_hook mm/slub.c:4948 [inline]
slab_alloc_node mm/slub.c:5258 [inline]
__do_kmalloc_node mm/slub.c:5651 [inline]
__kmalloc_noprof+0x3cf/0x800 mm/slub.c:5664
kmalloc_noprof include/linux/slab.h:961 [inline]
tomoyo_realpath_from_path+0xe3/0x5d0 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_check_open_permission+0x1c1/0x3b0 security/tomoyo/file.c:771
security_file_open+0xb1/0x270 security/security.c:2636
do_dentry_open+0x34e/0x1420 fs/open.c:939
vfs_open+0x3b/0x340 fs/open.c:1094
do_open fs/namei.c:4597 [inline]
path_openat+0x33ce/0x3d90 fs/namei.c:4756
do_filp_open+0x1fa/0x410 fs/namei.c:4783
do_sys_openat2+0x121/0x1c0 fs/open.c:1432
do_sys_open fs/open.c:1447 [inline]
__do_sys_openat fs/open.c:1463 [inline]
__se_sys_openat fs/open.c:1458 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1458
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
Memory state around the buggy address:
ffff888029991000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff888029991080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc
>ffff888029991100: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
^
ffff888029991180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888029991200: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
==================================================================
Warning: Permanently added '10.128.0.49' (ED25519) to the list of known hosts.
2025/11/17 10:17:19 parsed 1 programs
[ 76.886144][ T5836] cgroup: Unknown subsys name 'net'
[ 77.101943][ T5836] cgroup: Unknown subsys name 'cpuset'
[ 77.111071][ T5836] cgroup: Unknown subsys name 'rlimit'
[ 78.584497][ T5836] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 81.623069][ T5851] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality.
[ 82.741094][ T1013] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 82.749928][ T1013] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 82.784636][ T13] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 82.794636][ T13] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 84.063024][ T5898] chnl_net:caif_netlink_parms(): no params data found
[ 84.186653][ T5898] bridge0: port 1(bridge_slave_0) entered blocking state
[ 84.194802][ T5898] bridge0: port 1(bridge_slave_0) entered disabled state
[ 84.203830][ T5898] bridge_slave_0: entered allmulticast mode
[ 84.212296][ T5898] bridge_slave_0: entered promiscuous mode
[ 84.225449][ T5898] bridge0: port 2(bridge_slave_1) entered blocking state
[ 84.233010][ T5898] bridge0: port 2(bridge_slave_1) entered disabled state
[ 84.240384][ T5898] bridge_slave_1: entered allmulticast mode
[ 84.247853][ T5898] bridge_slave_1: entered promiscuous mode
[ 84.283098][ T5898] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 84.299349][ T5898] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 84.337598][ T5898] team0: Port device team_slave_0 added
[ 84.346617][ T5898] team0: Port device team_slave_1 added
[ 84.373528][ T5898] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 84.381601][ T5898] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[ 84.408220][ T5898] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 84.420930][ T5898] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 84.428487][ T5898] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[ 84.456535][ T5898] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 84.499682][ T5898] hsr_slave_0: entered promiscuous mode
[ 84.506199][ T5898] hsr_slave_1: entered promiscuous mode
[ 84.645533][ T5898] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 84.659363][ T5898] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 84.670879][ T5898] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 84.682175][ T5898] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 84.713866][ T5898] bridge0: port 2(bridge_slave_1) entered blocking state
[ 84.721711][ T5898] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 84.729874][ T5898] bridge0: port 1(bridge_slave_0) entered blocking state
[ 84.737280][ T5898] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 84.799830][ T5898] 8021q: adding VLAN 0 to HW filter on device bond0
[ 84.820780][ T1146] bridge0: port 1(bridge_slave_0) entered disabled state
[ 84.829635][ T1146] bridge0: port 2(bridge_slave_1) entered disabled state
[ 84.845298][ T5898] 8021q: adding VLAN 0 to HW filter on device team0
[ 84.860292][ T1152] bridge0: port 1(bridge_slave_0) entered blocking state
[ 84.867626][ T1152] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 84.885473][ T1152] bridge0: port 2(bridge_slave_1) entered blocking state
[ 84.893393][ T1152] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 85.055296][ T5898] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 85.106773][ T5898] veth0_vlan: entered promiscuous mode
[ 85.122274][ T5898] veth1_vlan: entered promiscuous mode
[ 85.153843][ T5898] veth0_macvtap: entered promiscuous mode
[ 85.166631][ T5898] veth1_macvtap: entered promiscuous mode
[ 85.186152][ T5898] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 85.201081][ T5898] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 85.217946][ T1146] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 85.229784][ T1146] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 85.243406][ T1146] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 85.256872][ T1146] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 85.415249][ T13] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 85.429530][ T53] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 85.445924][ T53] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 85.454688][ T53] ==================================================================
[ 85.462972][ T53] BUG: KASAN: slab-use-after-free in hci_cmd_work+0x5d0/0x7b0
[ 85.470435][ T53] Read of size 2 at addr ffff888029991178 by task kworker/u9:0/53
[ 85.478234][ T53]
[ 85.480643][ T53] CPU: 0 UID: 0 PID: 53 Comm: kworker/u9:0 Not tainted syzkaller #0 PREEMPT(full)
[ 85.480655][ T53] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 85.480663][ T53] Workqueue: hci0 hci_cmd_work
[ 85.480686][ T53] Call Trace:
[ 85.480693][ T53]
[ 85.480698][ T53] dump_stack_lvl+0x189/0x250
[ 85.480714][ T53] ? __virt_addr_valid+0x1c8/0x5c0
[ 85.480724][ T53] ? rcu_is_watching+0x15/0xb0
[ 85.480733][ T53] ? __pfx_dump_stack_lvl+0x10/0x10
[ 85.480746][ T53] ? rcu_is_watching+0x15/0xb0
[ 85.480754][ T53] ? lock_release+0x4b/0x3d0
[ 85.480765][ T53] ? _raw_spin_lock_irqsave+0xb3/0xf0
[ 85.480778][ T53] ? __virt_addr_valid+0x1c8/0x5c0
[ 85.480786][ T53] ? __virt_addr_valid+0x4a5/0x5c0
[ 85.480796][ T53] print_report+0xca/0x240
[ 85.480808][ T53] ? hci_cmd_work+0x5d0/0x7b0
[ 85.480820][ T53] kasan_report+0x118/0x150
[ 85.480836][ T53] ? hci_cmd_work+0x5d0/0x7b0
[ 85.480850][ T53] hci_cmd_work+0x5d0/0x7b0
[ 85.480864][ T53] ? process_one_work+0x868/0x15e0
[ 85.480875][ T53] process_one_work+0x93a/0x15e0
[ 85.480886][ T53] ? __lock_acquire+0xab9/0xd20
[ 85.480901][ T53] ? __pfx_process_one_work+0x10/0x10
[ 85.480914][ T53] ? assign_work+0x3a1/0x410
[ 85.480925][ T53] worker_thread+0x9b0/0xee0
[ 85.480943][ T53] kthread+0x711/0x8a0
[ 85.480952][ T53] ? __pfx_worker_thread+0x10/0x10
[ 85.480963][ T53] ? __pfx_kthread+0x10/0x10
[ 85.480972][ T53] ? _raw_spin_unlock_irq+0x23/0x50
[ 85.480982][ T53] ? lockdep_hardirqs_on+0x9c/0x150
[ 85.480994][ T53] ? __pfx_kthread+0x10/0x10
[ 85.481002][ T53] ret_from_fork+0x599/0xb30
[ 85.481015][ T53] ? __pfx_ret_from_fork+0x10/0x10
[ 85.481028][ T53] ? __switch_to_asm+0x39/0x70
[ 85.481037][ T53] ? __switch_to_asm+0x33/0x70
[ 85.481045][ T53] ? __pfx_kthread+0x10/0x10
[ 85.481053][ T53] ret_from_fork_asm+0x1a/0x30
[ 85.481065][ T53]
[ 85.481069][ T53]
[ 85.679199][ T53] Allocated by task 5153:
[ 85.683517][ T53] kasan_save_track+0x3e/0x80
[ 85.688366][ T53] __kasan_slab_alloc+0x6c/0x80
[ 85.693206][ T53] kmem_cache_alloc_node_noprof+0x43c/0x710
[ 85.699093][ T53] __alloc_skb+0x112/0x2d0
[ 85.703603][ T53] hci_cmd_sync_alloc+0x3d/0x3b0
[ 85.708705][ T53] __hci_cmd_sync_sk+0x1a7/0xc70
[ 85.713848][ T53] hci_dev_open_sync+0x163e/0x2dc0
[ 85.718955][ T53] hci_power_on+0x1b4/0x720
[ 85.723482][ T53] process_one_work+0x93a/0x15e0
[ 85.728406][ T53] worker_thread+0x9b0/0xee0
[ 85.733153][ T53] kthread+0x711/0x8a0
[ 85.737291][ T53] ret_from_fork+0x599/0xb30
[ 85.741866][ T53] ret_from_fork_asm+0x1a/0x30
[ 85.746642][ T53]
[ 85.748951][ T53] Freed by task 5921:
[ 85.752997][ T53] kasan_save_track+0x3e/0x80
[ 85.757719][ T53] kasan_save_free_info+0x46/0x50
[ 85.763161][ T53] __kasan_slab_free+0x5c/0x80
[ 85.767924][ T53] kmem_cache_free+0x197/0x640
[ 85.773052][ T53] vhci_read+0x49a/0x5b0
[ 85.777298][ T53] vfs_read+0x200/0xa30
[ 85.781598][ T53] ksys_read+0x145/0x250
[ 85.786092][ T53] do_syscall_64+0xfa/0xfa0
[ 85.790676][ T53] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 85.796744][ T53]
[ 85.799075][ T53] The buggy address belongs to the object at ffff888029991140
[ 85.799075][ T53] which belongs to the cache skbuff_head_cache of size 240
[ 85.814479][ T53] The buggy address is located 56 bytes inside of
[ 85.814479][ T53] freed 240-byte region [ffff888029991140, ffff888029991230)
[ 85.828364][ T53]
[ 85.830684][ T53] The buggy address belongs to the physical page:
[ 85.837219][ T53] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x29991
[ 85.846140][ T53] ksm flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
[ 85.853760][ T53] page_type: f5(slab)
[ 85.857741][ T53] raw: 00fff00000000000 ffff88801da8a000 ffffea000072ab00 dead000000000003
[ 85.866303][ T53] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000
[ 85.874955][ T53] page dumped because: kasan: bad access detected
[ 85.881379][ T53] page_owner tracks the page as allocated
[ 85.887418][ T53] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5210, tgid 5210 (udevd), ts 45027661085, free_ts 45004941492
[ 85.906764][ T53] post_alloc_hook+0x240/0x2a0
[ 85.911602][ T53] get_page_from_freelist+0x2365/0x2440
[ 85.917363][ T53] __alloc_frozen_pages_noprof+0x181/0x370
[ 85.923601][ T53] alloc_pages_mpol+0x232/0x4a0
[ 85.928629][ T53] allocate_slab+0x86/0x3b0
[ 85.933136][ T53] ___slab_alloc+0xf56/0x1990
[ 85.937890][ T53] __slab_alloc+0x65/0x100
[ 85.942561][ T53] kmem_cache_alloc_node_noprof+0x4ce/0x710
[ 85.948633][ T53] __alloc_skb+0x112/0x2d0
[ 85.953232][ T53] alloc_skb_with_frags+0xca/0x890
[ 85.958518][ T53] sock_alloc_send_pskb+0x84d/0x980
[ 85.963893][ T53] unix_dgram_sendmsg+0x461/0x1850
[ 85.969089][ T53] __sock_sendmsg+0x21c/0x270
[ 85.973767][ T53] sock_write_iter+0x279/0x360
[ 85.978777][ T53] vfs_write+0x5c9/0xb30
[ 85.983026][ T53] ksys_write+0x145/0x250
[ 85.987342][ T53] page last free pid 5216 tgid 5216 stack trace:
[ 85.993671][ T53] __free_frozen_pages+0xbc8/0xd30
[ 85.998782][ T53] __slab_free+0x21b/0x2a0
[ 86.003313][ T53] qlist_free_all+0x97/0x100
[ 86.007946][ T53] kasan_quarantine_reduce+0x148/0x160
[ 86.013488][ T53] __kasan_slab_alloc+0x22/0x80
[ 86.018569][ T53] __kmalloc_noprof+0x3cf/0x800
[ 86.023592][ T53] tomoyo_realpath_from_path+0xe3/0x5d0
[ 86.029314][ T53] tomoyo_check_open_permission+0x1c1/0x3b0
[ 86.035231][ T53] security_file_open+0xb1/0x270
[ 86.040342][ T53] do_dentry_open+0x34e/0x1420
[ 86.045191][ T53] vfs_open+0x3b/0x340
[ 86.049247][ T53] path_openat+0x33ce/0x3d90
[ 86.054004][ T53] do_filp_open+0x1fa/0x410
[ 86.058489][ T53] do_sys_openat2+0x121/0x1c0
[ 86.063270][ T53] __x64_sys_openat+0x138/0x170
[ 86.068193][ T53] do_syscall_64+0xfa/0xfa0
[ 86.073248][ T53]
[ 86.075597][ T53] Memory state around the buggy address:
[ 86.081487][ T53] ffff888029991000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 86.089553][ T53] ffff888029991080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc
[ 86.098136][ T53] >ffff888029991100: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[ 86.106377][ T53] ^
[ 86.114432][ T53] ffff888029991180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 86.122584][ T53] ffff888029991200: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
[ 86.130722][ T53] ==================================================================
[ 86.142049][ T53] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 86.149471][ T53] CPU: 0 UID: 0 PID: 53 Comm: kworker/u9:0 Not tainted syzkaller #0 PREEMPT(full)
[ 86.158761][ T53] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 86.169276][ T53] Workqueue: hci0 hci_cmd_work
[ 86.174231][ T53] Call Trace:
[ 86.177554][ T53]
[ 86.180467][ T53] dump_stack_lvl+0x99/0x250
[ 86.185054][ T53] ? __asan_memcpy+0x40/0x70
[ 86.189848][ T53] ? __pfx_dump_stack_lvl+0x10/0x10
[ 86.195058][ T53] ? __pfx__printk+0x10/0x10
[ 86.199718][ T53] vpanic+0x237/0x6d0
[ 86.203797][ T53] ? __pfx_vpanic+0x10/0x10
[ 86.208388][ T53] ? preempt_schedule+0xae/0xc0
[ 86.213250][ T53] ? __pfx_preempt_schedule+0x10/0x10
[ 86.218619][ T53] panic+0xb9/0xc0
[ 86.222542][ T53] ? __pfx_panic+0x10/0x10
[ 86.226958][ T53] ? _raw_spin_unlock_irqrestore+0xfd/0x110
[ 86.232847][ T53] ? is_module_address+0x17/0xf0
[ 86.237892][ T53] ? hci_cmd_work+0x5d0/0x7b0
[ 86.242740][ T53] check_panic_on_warn+0x89/0xb0
[ 86.247676][ T53] ? hci_cmd_work+0x5d0/0x7b0
[ 86.252414][ T53] end_report+0x6f/0x160
[ 86.256922][ T53] kasan_report+0x129/0x150
[ 86.261692][ T53] ? hci_cmd_work+0x5d0/0x7b0
[ 86.266852][ T53] hci_cmd_work+0x5d0/0x7b0
[ 86.271889][ T53] ? process_one_work+0x868/0x15e0
[ 86.277534][ T53] process_one_work+0x93a/0x15e0
[ 86.282669][ T53] ? __lock_acquire+0xab9/0xd20
[ 86.287601][ T53] ? __pfx_process_one_work+0x10/0x10
[ 86.293351][ T53] ? assign_work+0x3a1/0x410
[ 86.298022][ T53] worker_thread+0x9b0/0xee0
[ 86.302971][ T53] kthread+0x711/0x8a0
[ 86.307061][ T53] ? __pfx_worker_thread+0x10/0x10
[ 86.312326][ T53] ? __pfx_kthread+0x10/0x10
[ 86.317089][ T53] ? _raw_spin_unlock_irq+0x23/0x50
[ 86.322640][ T53] ? lockdep_hardirqs_on+0x9c/0x150
[ 86.328030][ T53] ? __pfx_kthread+0x10/0x10
[ 86.332797][ T53] ret_from_fork+0x599/0xb30
[ 86.337396][ T53] ? __pfx_ret_from_fork+0x10/0x10
[ 86.342611][ T53] ? __switch_to_asm+0x39/0x70
[ 86.347760][ T53] ? __switch_to_asm+0x33/0x70
[ 86.352613][ T53] ? __pfx_kthread+0x10/0x10
[ 86.357521][ T53] ret_from_fork_asm+0x1a/0x30
[ 86.362724][ T53]
[ 86.365997][ T53] Kernel Offset: disabled
[ 86.370573][ T53] Rebooting in 86400 seconds..
syzkaller build log:
go env (err=)
AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE='auto'
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build3798277663=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs-2/linux/gopath'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/syzkaller/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.24.4'
GOWORK=''
PKG_CONFIG='pkg-config'
git status (err=)
HEAD detached at 1c8c8cd83
nothing to commit, working tree clean
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=1c8c8cd830af4deee250ad11f1613d1d9a62ca0b -X github.com/google/syzkaller/prog.gitRevisionDate=20251017-133007" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=1c8c8cd830af4deee250ad11f1613d1d9a62ca0b -X github.com/google/syzkaller/prog.gitRevisionDate=20251017-133007" ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=1c8c8cd830af4deee250ad11f1613d1d9a62ca0b -X github.com/google/syzkaller/prog.gitRevisionDate=20251017-133007" -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_amd64
g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"1c8c8cd830af4deee250ad11f1613d1d9a62ca0b\"
/usr/bin/ld: /tmp/ccxFF9oB.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
./tools/check-syzos.sh 2>/dev/null