BUG: sleeping function called from invalid context at net/core/sock.c:3252 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3998, name: kworker/u5:2 6 locks held by kworker/u5:2/3998: #0: ffff0000cfa52138 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283 #1: ffff80001cc97c00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285 #2: ffff0000d1284078 (&hdev->lock){+.+.}-{3:3}, at: hci_sync_conn_complete_evt+0xb4/0x8c0 net/bluetooth/hci_event.c:4471 #3: ffff800016bac0a8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1502 [inline] #3: ffff800016bac0a8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_sync_conn_complete_evt+0x404/0x8c0 net/bluetooth/hci_event.c:4551 #4: ffff0000d24e7220 (&conn->lock#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:363 [inline] #4: ffff0000d24e7220 (&conn->lock#2){+.+.}-{2:2}, at: sco_conn_ready net/bluetooth/sco.c:1116 [inline] #4: ffff0000d24e7220 (&conn->lock#2){+.+.}-{2:2}, at: sco_connect_cfm+0x260/0x908 net/bluetooth/sco.c:1201 #5: ffff0000c247b120 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1678 [inline] #5: ffff0000c247b120 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_conn_ready net/bluetooth/sco.c:1129 [inline] #5: ffff0000c247b120 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_connect_cfm+0x3e8/0x908 net/bluetooth/sco.c:1201 Preemption disabled at: [] spin_lock include/linux/spinlock.h:363 [inline] [] sco_conn_ready net/bluetooth/sco.c:1116 [inline] [] sco_connect_cfm+0x260/0x908 net/bluetooth/sco.c:1201 CPU: 0 PID: 3998 Comm: kworker/u5:2 Not tainted 5.15.168-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: hci0 hci_rx_work Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 ___might_sleep+0x380/0x4dc kernel/sched/core.c:9636 __might_sleep+0x98/0xf0 kernel/sched/core.c:9590 lock_sock_nested+0x100/0x1ec net/core/sock.c:3252 lock_sock include/net/sock.h:1678 [inline] sco_conn_ready net/bluetooth/sco.c:1129 [inline] sco_connect_cfm+0x3e8/0x908 net/bluetooth/sco.c:1201 hci_connect_cfm include/net/bluetooth/hci_core.h:1505 [inline] hci_sync_conn_complete_evt+0x468/0x8c0 net/bluetooth/hci_event.c:4551 hci_event_packet+0x8e0/0x12b4 net/bluetooth/hci_event.c:6483 hci_rx_work+0x1c0/0x7c4 net/bluetooth/hci_core.c:5155 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x114/0x7638 kernel/locking/lockdep.c:4882 Read of size 8 at addr ffff0000c247b0a0 by task kworker/u5:2/3998 CPU: 0 PID: 3998 Comm: kworker/u5:2 Tainted: G W 5.15.168-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: hci0 hci_rx_work Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 __asan_report_load8_noabort+0x44/0x50 mm/kasan/report_generic.c:309 __lock_acquire+0x114/0x7638 kernel/locking/lockdep.c:4882 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x124/0x1c4 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:368 [inline] lock_sock_nested+0x108/0x1ec net/core/sock.c:3253 lock_sock include/net/sock.h:1678 [inline] sco_conn_ready net/bluetooth/sco.c:1129 [inline] sco_connect_cfm+0x3e8/0x908 net/bluetooth/sco.c:1201 hci_connect_cfm include/net/bluetooth/hci_core.h:1505 [inline] hci_sync_conn_complete_evt+0x468/0x8c0 net/bluetooth/hci_event.c:4551 hci_event_packet+0x8e0/0x12b4 net/bluetooth/hci_event.c:6483 hci_rx_work+0x1c0/0x7c4 net/bluetooth/hci_core.c:5155 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Allocated by task 4791: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc+0x29c/0x4c8 mm/slub.c:4407 kmalloc include/linux/slab.h:596 [inline] sk_prot_alloc+0xc4/0x1f0 net/core/sock.c:1863 sk_alloc+0x40/0x3e0 net/core/sock.c:1916 sco_sock_alloc net/bluetooth/sco.c:485 [inline] sco_sock_create+0xb8/0x2d4 net/bluetooth/sco.c:520 bt_sock_create+0x14c/0x248 net/bluetooth/af_bluetooth.c:130 __sock_create+0x43c/0x8a0 net/socket.c:1486 sock_create net/socket.c:1542 [inline] __sys_socket+0x168/0x310 net/socket.c:1584 __do_sys_socket net/socket.c:1593 [inline] __se_sys_socket net/socket.c:1591 [inline] __arm64_sys_socket+0x7c/0x94 net/socket.c:1591 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Freed by task 4790: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4c/0x84 mm/kasan/common.c:46 kasan_set_free_info+0x28/0x4c mm/kasan/generic.c:360 ____kasan_slab_free+0x118/0x164 mm/kasan/common.c:366 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0x128/0x1ec mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kfree+0x178/0x410 mm/slub.c:4559 sk_prot_free net/core/sock.c:1899 [inline] __sk_destruct+0x418/0x600 net/core/sock.c:1985 sk_destruct net/core/sock.c:2000 [inline] __sk_free+0x37c/0x4e8 net/core/sock.c:2011 sk_free+0x68/0xdc net/core/sock.c:2022 sock_put include/net/sock.h:1923 [inline] sco_sock_kill+0x104/0x1c8 net/bluetooth/sco.c:406 sco_sock_release+0x1fc/0x2c0 net/bluetooth/sco.c:1098 __sock_release net/socket.c:649 [inline] sock_close+0xb8/0x1fc net/socket.c:1336 __fput+0x1c4/0x800 fs/file_table.c:280 ____fput+0x20/0x30 fs/file_table.c:308 task_work_run+0x130/0x1e4 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 The buggy address belongs to the object at ffff0000c247b000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 160 bytes inside of 2048-byte region [ffff0000c247b000, ffff0000c247b800) The buggy address belongs to the page: page:00000000b3b5a4d5 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102478 head:00000000b3b5a4d5 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 0000000600000001 ffff0000c0002900 raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000c247af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000c247b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000c247b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000c247b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000c247b180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== Unable to handle kernel paging request at virtual address dfff800000000000 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000000] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 3998 Comm: kworker/u5:2 Tainted: G B W 5.15.168-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: hci0 hci_rx_work pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : apparmor_sk_clone_security+0xf0/0x3d8 security/apparmor/lsm.c:818 lr : apparmor_sk_clone_security+0xd0/0x3d8 security/apparmor/lsm.c:816 sp : ffff80001cc97730 x29: ffff80001cc97730 x28: dfff800000000000 x27: 1ffff00003992efc x26: ffff0000c247a3aa x25: ffff0000c247b530 x24: 1fffe000199e4ec0 x23: dfff800000000000 x22: dfff800000000000 x21: 0000000000000000 x20: 0000000000000000 x19: ffff0000ccf27600 x18: 0000000000000204 x17: ffff800010d9528c x16: ffff8000088cd82c x15: ffff80000fd76fe4 x14: ffff80000a5d3000 x13: ffff80000802b56c x12: 0000000000000001 x11: 0000000000000001 x10: 0000000000000000 x9 : ffff0000cda93680 x8 : 0000000000000000 x7 : ffffffffffffffff x6 : ffff800010c89354 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80000a64def4 x2 : 0000000000000000 x1 : 0000000000000008 x0 : 0000000000000000 Call trace: apparmor_sk_clone_security+0xf0/0x3d8 security/apparmor/lsm.c:818 security_sk_clone+0x58/0x9c security/security.c:2318 sco_sock_init net/bluetooth/sco.c:468 [inline] sco_conn_ready net/bluetooth/sco.c:1139 [inline] sco_connect_cfm+0x58c/0x908 net/bluetooth/sco.c:1201 hci_connect_cfm include/net/bluetooth/hci_core.h:1505 [inline] hci_sync_conn_complete_evt+0x468/0x8c0 net/bluetooth/hci_event.c:4551 hci_event_packet+0x8e0/0x12b4 net/bluetooth/hci_event.c:6483 hci_rx_work+0x1c0/0x7c4 net/bluetooth/hci_core.c:5155 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Code: 710006df 540010ab 9779d8ae d343fe88 (38776908) ---[ end trace 37b4de86655ef504 ]--- ---------------- Code disassembly (best guess): 0: 710006df cmp w22, #0x1 4: 540010ab b.lt 0x218 // b.tstop 8: 9779d8ae bl 0xfffffffffde762c0 c: d343fe88 lsr x8, x20, #3 * 10: 38776908 ldrb w8, [x8, x23] <-- trapping instruction