KASAN: slab-use-after-free Read in hci_cmd_work
==================================================================
BUG: KASAN: slab-use-after-free in hci_cmd_work+0x5d0/0x7b0 net/bluetooth/hci_core.c:4174
Read of size 2 at addr ffff88807800bdf8 by task kworker/u9:1/5148
CPU: 0 UID: 0 PID: 5148 Comm: kworker/u9:1 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 5837:
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_cmd_sync_status+0x4d/0x150 net/bluetooth/hci_sync.c:298
hci_dev_cmd+0x431/0x7d0 net/bluetooth/hci_core.c:735
sock_do_ioctl+0xdc/0x300 net/socket.c:1258
sock_ioctl+0x576/0x790 net/socket.c:1379
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
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
Freed by task 5838:
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 ffff88807800bdc0
which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 56 bytes inside of
freed 240-byte region [ffff88807800bdc0, ffff88807800beb0)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7800b
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff888140edd000 dead000000000122 0000000000000000
raw: 0000000000000000 00000000000c000c 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 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5148, tgid 5148 (kworker/u9:1), ts 87171306860, free_ts 87127036354
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]
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_name_sync+0x2c/0x120 net/bluetooth/hci_sync.c:3775
hci_init_stage_sync net/bluetooth/hci_sync.c:3623 [inline]
hci_init2_sync net/bluetooth/hci_sync.c:4047 [inline]
hci_init_sync net/bluetooth/hci_sync.c:4881 [inline]
hci_dev_init_sync net/bluetooth/hci_sync.c:5066 [inline]
hci_dev_open_sync+0x230e/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
page last free pid 2 tgid 2 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
___free_pages_bulk mm/kasan/shadow.c:333 [inline]
__kasan_populate_vmalloc_do mm/kasan/shadow.c:385 [inline]
__kasan_populate_vmalloc+0x137/0x1d0 mm/kasan/shadow.c:424
kasan_populate_vmalloc include/linux/kasan.h:579 [inline]
alloc_vmap_area+0xdca/0x1500 mm/vmalloc.c:2124
__get_vm_area_node+0x1f8/0x300 mm/vmalloc.c:3219
__vmalloc_node_range_noprof+0x371/0x16a0 mm/vmalloc.c:4009
__vmalloc_node_noprof+0xc2/0x110 mm/vmalloc.c:4109
alloc_thread_stack_node kernel/fork.c:311 [inline]
dup_task_struct+0x3d4/0x830 kernel/fork.c:880
copy_process+0x4ea/0x3930 kernel/fork.c:2011
kernel_clone+0x21e/0x850 kernel/fork.c:2609
kernel_thread+0x10d/0x160 kernel/fork.c:2670
create_kthread kernel/kthread.c:486 [inline]
kthreadd+0x575/0x770 kernel/kthread.c:844
ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
Memory state around the buggy address:
ffff88807800bc80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807800bd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
>ffff88807800bd80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
^
ffff88807800be00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807800be80: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
==================================================================
Warning: Permanently added '10.128.0.223' (ED25519) to the list of known hosts.
2025/11/17 14:35:21 ignoring optional flag "type"="gce"
2025/11/17 14:35:21 parsed 1 programs
[ 85.172642][ T5829] cgroup: Unknown subsys name 'net'
[ 85.281013][ T5829] cgroup: Unknown subsys name 'cpuset'
[ 85.291193][ T5829] cgroup: Unknown subsys name 'rlimit'
2025/11/17 14:35:23 executed programs: 0
[ 87.037564][ T5829] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 87.137502][ T52] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 87.145671][ T52] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 87.154145][ T52] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 87.163182][ T52] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 87.172154][ T52] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 87.182809][ T5148] ==================================================================
[ 87.191022][ T5148] BUG: KASAN: slab-use-after-free in hci_cmd_work+0x5d0/0x7b0
[ 87.198703][ T5148] Read of size 2 at addr ffff88807800bdf8 by task kworker/u9:1/5148
[ 87.206809][ T5148]
[ 87.209345][ T5148] CPU: 0 UID: 0 PID: 5148 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full)
[ 87.209368][ T5148] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 87.209382][ T5148] Workqueue: hci0 hci_cmd_work
[ 87.209414][ T5148] Call Trace:
[ 87.209423][ T5148]
[ 87.209432][ T5148] dump_stack_lvl+0x189/0x250
[ 87.209461][ T5148] ? __virt_addr_valid+0x1c8/0x5c0
[ 87.209481][ T5148] ? rcu_is_watching+0x15/0xb0
[ 87.209498][ T5148] ? __pfx_dump_stack_lvl+0x10/0x10
[ 87.209524][ T5148] ? rcu_is_watching+0x15/0xb0
[ 87.209540][ T5148] ? lock_release+0x4b/0x3d0
[ 87.209562][ T5148] ? _raw_spin_lock_irqsave+0xb3/0xf0
[ 87.209587][ T5148] ? __virt_addr_valid+0x1c8/0x5c0
[ 87.209605][ T5148] ? __virt_addr_valid+0x4a5/0x5c0
[ 87.209625][ T5148] print_report+0xca/0x240
[ 87.209649][ T5148] ? hci_cmd_work+0x5d0/0x7b0
[ 87.209683][ T5148] kasan_report+0x118/0x150
[ 87.209709][ T5148] ? hci_cmd_work+0x5d0/0x7b0
[ 87.209739][ T5148] hci_cmd_work+0x5d0/0x7b0
[ 87.209766][ T5148] ? process_one_work+0x868/0x15e0
[ 87.209788][ T5148] process_one_work+0x93a/0x15e0
[ 87.209811][ T5148] ? __lock_acquire+0xab9/0xd20
[ 87.209842][ T5148] ? __pfx_process_one_work+0x10/0x10
[ 87.209869][ T5148] ? assign_work+0x3a1/0x410
[ 87.209893][ T5148] worker_thread+0x9b0/0xee0
[ 87.209929][ T5148] kthread+0x711/0x8a0
[ 87.209948][ T5148] ? __pfx_worker_thread+0x10/0x10
[ 87.209971][ T5148] ? __pfx_kthread+0x10/0x10
[ 87.209989][ T5148] ? _raw_spin_unlock_irq+0x23/0x50
[ 87.210011][ T5148] ? lockdep_hardirqs_on+0x9c/0x150
[ 87.210035][ T5148] ? __pfx_kthread+0x10/0x10
[ 87.210052][ T5148] ret_from_fork+0x599/0xb30
[ 87.210077][ T5148] ? __pfx_ret_from_fork+0x10/0x10
[ 87.210103][ T5148] ? __switch_to_asm+0x39/0x70
[ 87.210121][ T5148] ? __switch_to_asm+0x33/0x70
[ 87.210138][ T5148] ? __pfx_kthread+0x10/0x10
[ 87.210155][ T5148] ret_from_fork_asm+0x1a/0x30
[ 87.210181][ T5148]
[ 87.210188][ T5148]
[ 87.402672][ T5148] Allocated by task 5837:
[ 87.407022][ T5148] kasan_save_track+0x3e/0x80
[ 87.411720][ T5148] __kasan_slab_alloc+0x6c/0x80
[ 87.416802][ T5148] kmem_cache_alloc_node_noprof+0x43c/0x710
[ 87.423184][ T5148] __alloc_skb+0x112/0x2d0
[ 87.427735][ T5148] hci_cmd_sync_alloc+0x3d/0x3b0
[ 87.432806][ T5148] __hci_cmd_sync_sk+0x1a7/0xc70
[ 87.437772][ T5148] hci_cmd_sync_status+0x4d/0x150
[ 87.443099][ T5148] hci_dev_cmd+0x431/0x7d0
[ 87.447729][ T5148] sock_do_ioctl+0xdc/0x300
[ 87.452254][ T5148] sock_ioctl+0x576/0x790
[ 87.456609][ T5148] __se_sys_ioctl+0xfc/0x170
[ 87.461242][ T5148] do_syscall_64+0xfa/0xfa0
[ 87.465751][ T5148] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.471736][ T5148]
[ 87.474165][ T5148] Freed by task 5838:
[ 87.478134][ T5148] kasan_save_track+0x3e/0x80
[ 87.482909][ T5148] kasan_save_free_info+0x46/0x50
[ 87.488040][ T5148] __kasan_slab_free+0x5c/0x80
[ 87.492829][ T5148] kmem_cache_free+0x197/0x640
[ 87.497689][ T5148] vhci_read+0x49a/0x5b0
[ 87.501940][ T5148] vfs_read+0x200/0xa30
[ 87.506104][ T5148] ksys_read+0x145/0x250
[ 87.510350][ T5148] do_syscall_64+0xfa/0xfa0
[ 87.514878][ T5148] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.521305][ T5148]
[ 87.523622][ T5148] The buggy address belongs to the object at ffff88807800bdc0
[ 87.523622][ T5148] which belongs to the cache skbuff_head_cache of size 240
[ 87.538553][ T5148] The buggy address is located 56 bytes inside of
[ 87.538553][ T5148] freed 240-byte region [ffff88807800bdc0, ffff88807800beb0)
[ 87.552637][ T5148]
[ 87.554978][ T5148] The buggy address belongs to the physical page:
[ 87.561580][ T5148] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7800b
[ 87.570714][ T5148] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
[ 87.577927][ T5148] page_type: f5(slab)
[ 87.581927][ T5148] raw: 00fff00000000000 ffff888140edd000 dead000000000122 0000000000000000
[ 87.590531][ T5148] raw: 0000000000000000 00000000000c000c 00000000f5000000 0000000000000000
[ 87.599308][ T5148] page dumped because: kasan: bad access detected
[ 87.606068][ T5148] page_owner tracks the page as allocated
[ 87.611801][ T5148] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5148, tgid 5148 (kworker/u9:1), ts 87171306860, free_ts 87127036354
[ 87.631180][ T5148] post_alloc_hook+0x240/0x2a0
[ 87.635986][ T5148] get_page_from_freelist+0x2365/0x2440
[ 87.642498][ T5148] __alloc_frozen_pages_noprof+0x181/0x370
[ 87.648441][ T5148] alloc_pages_mpol+0x232/0x4a0
[ 87.653416][ T5148] allocate_slab+0x86/0x3b0
[ 87.657922][ T5148] ___slab_alloc+0xf56/0x1990
[ 87.662593][ T5148] __slab_alloc+0x65/0x100
[ 87.667154][ T5148] kmem_cache_alloc_node_noprof+0x4ce/0x710
[ 87.673165][ T5148] __alloc_skb+0x112/0x2d0
[ 87.677593][ T5148] hci_cmd_sync_alloc+0x3d/0x3b0
[ 87.682655][ T5148] __hci_cmd_sync_sk+0x1a7/0xc70
[ 87.687627][ T5148] hci_read_local_name_sync+0x2c/0x120
[ 87.693314][ T5148] hci_dev_open_sync+0x230e/0x2dc0
[ 87.698460][ T5148] hci_power_on+0x1b4/0x720
[ 87.702985][ T5148] process_one_work+0x93a/0x15e0
[ 87.708032][ T5148] worker_thread+0x9b0/0xee0
[ 87.712736][ T5148] page last free pid 2 tgid 2 stack trace:
[ 87.718559][ T5148] __free_frozen_pages+0xbc8/0xd30
[ 87.723938][ T5148] __kasan_populate_vmalloc+0x137/0x1d0
[ 87.729715][ T5148] alloc_vmap_area+0xdca/0x1500
[ 87.734585][ T5148] __get_vm_area_node+0x1f8/0x300
[ 87.739621][ T5148] __vmalloc_node_range_noprof+0x371/0x16a0
[ 87.745525][ T5148] __vmalloc_node_noprof+0xc2/0x110
[ 87.750731][ T5148] dup_task_struct+0x3d4/0x830
[ 87.755607][ T5148] copy_process+0x4ea/0x3930
[ 87.760505][ T5148] kernel_clone+0x21e/0x850
[ 87.765199][ T5148] kernel_thread+0x10d/0x160
[ 87.769816][ T5148] kthreadd+0x575/0x770
[ 87.774082][ T5148] ret_from_fork+0x599/0xb30
[ 87.778784][ T5148] ret_from_fork_asm+0x1a/0x30
[ 87.783750][ T5148]
[ 87.786100][ T5148] Memory state around the buggy address:
[ 87.791770][ T5148] ffff88807800bc80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 87.799953][ T5148] ffff88807800bd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
[ 87.808114][ T5148] >ffff88807800bd80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[ 87.816173][ T5148] ^
[ 87.824359][ T5148] ffff88807800be00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 87.832580][ T5148] ffff88807800be80: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
[ 87.840636][ T5148] ==================================================================
[ 87.849982][ T5148] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 87.857405][ T5148] CPU: 1 UID: 0 PID: 5148 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full)
[ 87.867062][ T5148] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 87.877306][ T5148] Workqueue: hci0 hci_cmd_work
[ 87.882542][ T5148] Call Trace:
[ 87.885853][ T5148]
[ 87.888927][ T5148] dump_stack_lvl+0x99/0x250
[ 87.893622][ T5148] ? __asan_memcpy+0x40/0x70
[ 87.898331][ T5148] ? __pfx_dump_stack_lvl+0x10/0x10
[ 87.903530][ T5148] ? __pfx__printk+0x10/0x10
[ 87.908239][ T5148] vpanic+0x237/0x6d0
[ 87.912511][ T5148] ? __pfx_vpanic+0x10/0x10
[ 87.917040][ T5148] ? preempt_schedule+0xae/0xc0
[ 87.922087][ T5148] ? __pfx_preempt_schedule+0x10/0x10
[ 87.927481][ T5148] panic+0xb9/0xc0
[ 87.931307][ T5148] ? __pfx_panic+0x10/0x10
[ 87.935759][ T5148] ? _raw_spin_unlock_irqrestore+0xfd/0x110
[ 87.941771][ T5148] ? is_module_address+0x17/0xf0
[ 87.946772][ T5148] ? hci_cmd_work+0x5d0/0x7b0
[ 87.951472][ T5148] check_panic_on_warn+0x89/0xb0
[ 87.956516][ T5148] ? hci_cmd_work+0x5d0/0x7b0
[ 87.961232][ T5148] end_report+0x6f/0x160
[ 87.965478][ T5148] kasan_report+0x129/0x150
[ 87.970097][ T5148] ? hci_cmd_work+0x5d0/0x7b0
[ 87.974876][ T5148] hci_cmd_work+0x5d0/0x7b0
[ 87.979485][ T5148] ? process_one_work+0x868/0x15e0
[ 87.984614][ T5148] process_one_work+0x93a/0x15e0
[ 87.989748][ T5148] ? __lock_acquire+0xab9/0xd20
[ 87.994623][ T5148] ? __pfx_process_one_work+0x10/0x10
[ 88.000187][ T5148] ? assign_work+0x3a1/0x410
[ 88.004781][ T5148] worker_thread+0x9b0/0xee0
[ 88.009486][ T5148] kthread+0x711/0x8a0
[ 88.013662][ T5148] ? __pfx_worker_thread+0x10/0x10
[ 88.018860][ T5148] ? __pfx_kthread+0x10/0x10
[ 88.023804][ T5148] ? _raw_spin_unlock_irq+0x23/0x50
[ 88.029005][ T5148] ? lockdep_hardirqs_on+0x9c/0x150
[ 88.034199][ T5148] ? __pfx_kthread+0x10/0x10
[ 88.038890][ T5148] ret_from_fork+0x599/0xb30
[ 88.043513][ T5148] ? __pfx_ret_from_fork+0x10/0x10
[ 88.048722][ T5148] ? __switch_to_asm+0x39/0x70
[ 88.053483][ T5148] ? __switch_to_asm+0x33/0x70
[ 88.058332][ T5148] ? __pfx_kthread+0x10/0x10
[ 88.062948][ T5148] ret_from_fork_asm+0x1a/0x30
[ 88.067713][ T5148]
[ 88.071214][ T5148] Kernel Offset: disabled
[ 88.075538][ T5148] 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-build358299314=/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 39990d513
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:32: run command via tools/syz-env for best compatibility, see:
Makefile:33: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=39990d513277ce9372a4cc89bdac23d9fc30b056 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20230811-094330'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=39990d513277ce9372a4cc89bdac23d9fc30b056 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20230811-094330'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=39990d513277ce9372a4cc89bdac23d9fc30b056 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20230811-094330'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress
mkdir -p ./bin/linux_amd64
gcc -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 -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"39990d513277ce9372a4cc89bdac23d9fc30b056\"