sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
==================================================================
BUG: KASAN: slab-use-after-free in hci_conn_hash_flush+0x201/0x240
Read of size 8 at addr ffff888048d84000 by task kworker/u5:2/279
CPU: 0 PID: 279 Comm: kworker/u5:2 Not tainted 6.3.0-next-20230427 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Workqueue: hci3 hci_error_reset
Call Trace:
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
dump_stack_lvl+0x91/0xf0
print_report+0xcc/0x620
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
kasan_report+0xc0/0xf0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
hci_conn_hash_flush+0x201/0x240
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
hci_dev_close_sync+0x57f/0xff0
misc raw-gadget: fail, usb_gadget_register_driver returned -16
hci_error_reset+0xab/0x140
process_one_work+0xa20/0x1660
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
worker_thread+0x64f/0x12a0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
kthread+0x33f/0x440
ret_from_fork+0x2c/0x50
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
Allocated by task 13239:
kasan_save_stack+0x22/0x50
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
kasan_set_track+0x25/0x30
__kasan_kmalloc+0x7f/0x90
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
hci_conn_add+0xa3/0x14d0
hci_connect_sco+0x3e7/0x1120
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sco_sock_connect+0x2c0/0x9c0
__sys_connect_file+0x159/0x1a0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
__sys_connect+0x169/0x1a0
__x64_sys_connect+0x73/0xb0
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
Freed by task 279:
kasan_save_stack+0x22/0x50
kasan_set_track+0x25/0x30
kasan_save_free_info+0x2e/0x50
__kasan_slab_free+0x10a/0x190
__kmem_cache_free+0xd1/0x2f0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
device_release+0xa6/0x240
kobject_put+0x177/0x270
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
put_device+0x1f/0x30
hci_conn_del+0x29f/0x810
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
hci_conn_unlink+0x211/0x390
hci_conn_unlink+0x2a3/0x390
hci_conn_hash_flush+0x195/0x240
hci_dev_close_sync+0x57f/0xff0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
hci_error_reset+0xab/0x140
process_one_work+0xa20/0x1660
worker_thread+0x64f/0x12a0
kthread+0x33f/0x440
ret_from_fork+0x2c/0x50
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
Last potentially related work creation:
kasan_save_stack+0x22/0x50
__kasan_record_aux_stack+0x95/0xb0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
__queue_work+0x622/0x12f0
__queue_delayed_work+0x1c8/0x270
queue_delayed_work_on+0xcd/0xd0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sco_chan_del+0x1db/0x440
__sco_sock_close+0x21e/0x770
sco_sock_release+0xa1/0x400
__sock_release+0xd2/0x2a0
sock_close+0x1c/0x30
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
__fput+0x263/0xa40
task_work_run+0x174/0x280
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
get_signal+0x1d3/0x26c0
arch_do_signal_or_restart+0x79/0x590
exit_to_user_mode_prepare+0xeb/0x180
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
syscall_exit_to_user_mode+0x1d/0x50
do_syscall_64+0x4c/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
The buggy address belongs to the object at ffff888048d84000
which belongs to the cache kmalloc-4k of size 4096
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
The buggy address is located 0 bytes inside of
freed 4096-byte region [ffff888048d84000, ffff888048d85000)
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
The buggy address belongs to the physical page:
page:00000000d488c743 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888048d82000 pfn:0x48d80
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
head:00000000d488c743 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0x100000000010200(slab|head|node=0|zone=1)
page_type: 0xffffffff()
raw: 0100000000010200 ffff888008442140 0000000000000000 dead000000000001
raw: ffff888048d82000 0000000080040003 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888048d83f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
ffff888048d83f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888048d84000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888048d84080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
ffff888048d84100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
general protection fault, probably for non-canonical address 0xe08e5c62e0000022: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0x0473031700000110-0x0473031700000117]
CPU: 0 PID: 279 Comm: kworker/u5:2 Tainted: G B 6.3.0-next-20230427 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Workqueue: hci3 hci_error_reset
RIP: 0010:hci_conn_cleanup+0x1c5/0x780
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
Code: fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ef 04 00 00 48 89 da 49 89 5c 24 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 ab 04 00 00 48 b8 22 01 00 00 00 00 ad de 4c 89
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
RSP: 0018:ffff888019967b60 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: 0473031700000117 RCX: ffffffff83da9f63
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
RDX: 008e6062e0000022 RSI: 0000000000000008 RDI: ffff88805070ac08
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
RBP: ffff888048d84000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88805070ac00
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
R13: ffff888048d84260 R14: dffffc0000000000 R15: ffff888040b34000
FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561c710a3d98 CR3: 000000004bc36000 CR4: 0000000000350ef0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
hci_conn_del+0x29f/0x810
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
hci_conn_hash_flush+0x19d/0x240
hci_dev_close_sync+0x57f/0xff0
hci_error_reset+0xab/0x140
process_one_work+0xa20/0x1660
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
worker_thread+0x64f/0x12a0
kthread+0x33f/0x440
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
ret_from_fork+0x2c/0x50
Modules linked in:
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
---[ end trace 0000000000000000 ]---
RIP: 0010:hci_conn_cleanup+0x1c5/0x780
Code: fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ef 04 00 00 48 89 da 49 89 5c 24 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 ab 04 00 00 48 b8 22 01 00 00 00 00 ad de 4c 89
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
RSP: 0018:ffff888019967b60 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: 0473031700000117 RCX: ffffffff83da9f63
RDX: 008e6062e0000022 RSI: 0000000000000008 RDI: ffff88805070ac08
RBP: ffff888048d84000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88805070ac00
R13: ffff888048d84260 R14: dffffc0000000000 R15: ffff888040b34000
FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561c710a3d98 CR3: 000000004bc36000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow
warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current]
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
----------------
Code disassembly (best guess), 2 bytes skipped:
0: df 48 89 fisttps -0x77(%rax)
3: fa cli
4: 48 c1 ea 03 shr $0x3,%rdx
8: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
c: 0f 85 ef 04 00 00 jne 0x501
12: 48 89 da mov %rbx,%rdx
15: 49 89 5c 24 08 mov %rbx,0x8(%r12)
1a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
21: fc ff df
24: 48 c1 ea 03 shr $0x3,%rdx
* 28: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2c: 0f 85 ab 04 00 00 jne 0x4dd
32: 48 b8 22 01 00 00 00 movabs $0xdead000000000122,%rax
39: 00 ad de
3c: 4c rex.WR
3d: 89 .byte 0x89