syzbot

BUG: sleeping function called from invalid context at net/core/sock.c:3536
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5092, name: kworker/u9:2
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
6 locks held by kworker/u9:2/5092:
 #0: ffff888021bc4148 ((wq_completion)hci1#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888021bc4148 ((wq_completion)hci1#2){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc900036afd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc900036afd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffff888023958078 (&hdev->lock){+.+.}-{3:3}, at: hci_sync_conn_complete_evt+0xb1/0xaa0 net/bluetooth/hci_event.c:4926
 #3: ffffffff8f744688 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1967 [inline]
 #3: ffffffff8f744688 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_sync_conn_complete_evt+0x532/0xaa0 net/bluetooth/hci_event.c:5009
 #4: ffff88807ed84020 (&conn->lock#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #4: ffff88807ed84020 (&conn->lock#2){+.+.}-{2:2}, at: sco_conn_ready net/bluetooth/sco.c:1277 [inline]
 #4: ffff88807ed84020 (&conn->lock#2){+.+.}-{2:2}, at: sco_connect_cfm+0x28a/0xb40 net/bluetooth/sco.c:1362
 #5: ffff88807538e258 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1602 [inline]
 #5: ffff88807538e258 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_conn_ready net/bluetooth/sco.c:1290 [inline]
 #5: ffff88807538e258 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_connect_cfm+0x461/0xb40 net/bluetooth/sco.c:1362
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 5092 Comm: kworker/u9:2 Not tainted 6.10.0-syzkaller-01193-g408323581b72 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: hci1 hci_rx_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 __might_resched+0x5d4/0x780 kernel/sched/core.c:10199
 lock_sock_nested+0x5d/0x100 net/core/sock.c:3536
 lock_sock include/net/sock.h:1602 [inline]
 sco_conn_ready net/bluetooth/sco.c:1290 [inline]
 sco_connect_cfm+0x461/0xb40 net/bluetooth/sco.c:1362
 hci_connect_cfm include/net/bluetooth/hci_core.h:1970 [inline]
 hci_sync_conn_complete_evt+0x5ab/0xaa0 net/bluetooth/hci_event.c:5009
 hci_event_func net/bluetooth/hci_event.c:7444 [inline]
 hci_event_packet+0xac0/0x1540 net/bluetooth/hci_event.c:7496
 hci_rx_work+0x3e8/0xca0 net/bluetooth/hci_core.c:4042
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
==================================================================
BUG: KASAN: slab-use-after-free in __lock_acquire+0x78/0x1fd0 kernel/locking/lockdep.c:5005
Read of size 8 at addr ffff88807538e1d8 by task kworker/u9:2/5092

CPU: 1 PID: 5092 Comm: kworker/u9:2 Tainted: G        W          6.10.0-syzkaller-01193-g408323581b72 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: hci1 hci_rx_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 __lock_acquire+0x78/0x1fd0 kernel/locking/lockdep.c:5005
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 lock_sock_nested+0x6a/0x100 net/core/sock.c:3537
 lock_sock include/net/sock.h:1602 [inline]
 sco_conn_ready net/bluetooth/sco.c:1290 [inline]
 sco_connect_cfm+0x461/0xb40 net/bluetooth/sco.c:1362
 hci_connect_cfm include/net/bluetooth/hci_core.h:1970 [inline]
 hci_sync_conn_complete_evt+0x5ab/0xaa0 net/bluetooth/hci_event.c:5009
 hci_event_func net/bluetooth/hci_event.c:7444 [inline]
 hci_event_packet+0xac0/0x1540 net/bluetooth/hci_event.c:7496
 hci_rx_work+0x3e8/0xca0 net/bluetooth/hci_core.c:4042
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Allocated by task 5113:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:4123 [inline]
 __kmalloc_noprof+0x1f9/0x400 mm/slub.c:4136
 kmalloc_noprof include/linux/slab.h:664 [inline]
 sk_prot_alloc+0xe0/0x210 net/core/sock.c:2080
 sk_alloc+0x38/0x370 net/core/sock.c:2133
 bt_sock_alloc+0x3c/0x340 net/bluetooth/af_bluetooth.c:148
 sco_sock_alloc net/bluetooth/sco.c:500 [inline]
 sco_sock_create+0xbb/0x390 net/bluetooth/sco.c:531
 bt_sock_create+0x161/0x230 net/bluetooth/af_bluetooth.c:132
 __sock_create+0x490/0x920 net/socket.c:1571
 sock_create net/socket.c:1622 [inline]
 __sys_socket_create net/socket.c:1659 [inline]
 __sys_socket+0x150/0x3c0 net/socket.c:1706
 __do_sys_socket net/socket.c:1720 [inline]
 __se_sys_socket net/socket.c:1718 [inline]
 __x64_sys_socket+0x7a/0x90 net/socket.c:1718
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 5113:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2196 [inline]
 slab_free mm/slub.c:4438 [inline]
 kfree+0x149/0x360 mm/slub.c:4559
 sk_prot_free net/core/sock.c:2116 [inline]
 __sk_destruct+0x476/0x5f0 net/core/sock.c:2208
 sco_sock_release+0x25e/0x320 net/bluetooth/sco.c:1259
 __sock_release net/socket.c:659 [inline]
 sock_close+0xbc/0x240 net/socket.c:1421
 __fput+0x24a/0x8a0 fs/file_table.c:422
 __do_sys_close fs/open.c:1566 [inline]
 __se_sys_close fs/open.c:1551 [inline]
 __x64_sys_close+0x7f/0x110 fs/open.c:1551
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88807538e000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 472 bytes inside of
 freed 2048-byte region [ffff88807538e000, ffff88807538e800)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x75388
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: 0xffffefff(slab)
raw: 00fff00000000040 ffff888015042000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000080008 00000001ffffefff 0000000000000000
head: 00fff00000000040 ffff888015042000 dead000000000122 0000000000000000
head: 0000000000000000 0000000000080008 00000001ffffefff 0000000000000000
head: 00fff00000000003 ffffea0001d4e201 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5085, tgid 5085 (syz-executor289), ts 61801569049, free_ts 14985715302
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1473
 prep_new_page mm/page_alloc.c:1481 [inline]
 get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3425
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4683
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
 alloc_slab_page+0x5f/0x120 mm/slub.c:2265
 allocate_slab+0x5a/0x2f0 mm/slub.c:2428
 new_slab mm/slub.c:2481 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3667
 __slab_alloc+0x58/0xa0 mm/slub.c:3757
 __slab_alloc_node mm/slub.c:3810 [inline]
 slab_alloc_node mm/slub.c:3990 [inline]
 kmalloc_trace_noprof+0x1d5/0x2c0 mm/slub.c:4149
 kmalloc_noprof include/linux/slab.h:660 [inline]
 kzalloc_noprof include/linux/slab.h:778 [inline]
 rxrpc_alloc_connection+0x7b/0x560 net/rxrpc/conn_object.c:62
 rxrpc_prealloc_service_connection+0x26/0x300 net/rxrpc/conn_service.c:123
 rxrpc_service_prealloc_one+0x2cb/0xd70 net/rxrpc/call_accept.c:87
 rxrpc_kernel_charge_accept+0xd2/0x100 net/rxrpc/call_accept.c:475
 afs_charge_preallocation+0xba/0x2c0 fs/afs/rxrpc.c:712
 afs_open_socket+0x459/0x610 fs/afs/rxrpc.c:94
 afs_net_init+0x7b9/0x9a0 fs/afs/main.c:123
 ops_init+0x359/0x610 net/core/net_namespace.c:139
page last free pid 1 tgid 1 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1093 [inline]
 free_unref_page+0xd19/0xea0 mm/page_alloc.c:2588
 free_contig_range+0x9e/0x160 mm/page_alloc.c:6642
 destroy_args+0x8a/0x890 mm/debug_vm_pgtable.c:1017
 debug_vm_pgtable+0x4be/0x550 mm/debug_vm_pgtable.c:1397
 do_one_initcall+0x248/0x880 init/main.c:1267
 do_initcall_level+0x157/0x210 init/main.c:1329
 do_initcalls+0x3f/0x80 init/main.c:1345
 kernel_init_freeable+0x435/0x5d0 init/main.c:1578
 kernel_init+0x1d/0x2b0 init/main.c:1467
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff88807538e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807538e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88807538e180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff88807538e200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807538e280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================