================================================================== BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:101 [inline] BUG: KASAN: use-after-free in atomic_fetch_add_relaxed include/linux/atomic/atomic-instrumented.h:116 [inline] BUG: KASAN: use-after-free in __refcount_add include/linux/refcount.h:193 [inline] BUG: KASAN: use-after-free in __refcount_inc include/linux/refcount.h:250 [inline] BUG: KASAN: use-after-free in refcount_inc include/linux/refcount.h:267 [inline] BUG: KASAN: use-after-free in sock_hold include/net/sock.h:726 [inline] BUG: KASAN: use-after-free in sco_sock_timeout+0x64/0x290 net/bluetooth/sco.c:89 Write of size 4 at addr ffff8880164c9080 by task kworker/0:3/3331 CPU: 0 PID: 3331 Comm: kworker/0:3 Not tainted 5.18.0-syzkaller-02752-gfdaf9a5840ac #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events sco_sock_timeout Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0xeb/0x495 mm/kasan/report.c:313 print_report mm/kasan/report.c:429 [inline] kasan_report.cold+0xf4/0x1c6 mm/kasan/report.c:491 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 instrument_atomic_read_write include/linux/instrumented.h:101 [inline] atomic_fetch_add_relaxed include/linux/atomic/atomic-instrumented.h:116 [inline] __refcount_add include/linux/refcount.h:193 [inline] __refcount_inc include/linux/refcount.h:250 [inline] refcount_inc include/linux/refcount.h:267 [inline] sock_hold include/net/sock.h:726 [inline] sco_sock_timeout+0x64/0x290 net/bluetooth/sco.c:89 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 Allocated by task 4352: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:436 [inline] ____kasan_kmalloc mm/kasan/common.c:515 [inline] ____kasan_kmalloc mm/kasan/common.c:474 [inline] __kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:524 kmalloc include/linux/slab.h:586 [inline] sk_prot_alloc+0x110/0x290 net/core/sock.c:1936 sk_alloc+0x36/0x770 net/core/sock.c:1989 sco_sock_alloc.constprop.0+0x31/0x330 net/bluetooth/sco.c:483 sco_sock_create+0xd5/0x1b0 net/bluetooth/sco.c:522 bt_sock_create+0x17c/0x340 net/bluetooth/af_bluetooth.c:130 __sock_create+0x353/0x790 net/socket.c:1468 sock_create net/socket.c:1519 [inline] __sys_socket_create net/socket.c:1556 [inline] __sys_socket_create net/socket.c:1541 [inline] __sys_socket+0x12f/0x240 net/socket.c:1589 __do_sys_socket net/socket.c:1602 [inline] __se_sys_socket net/socket.c:1600 [inline] __x64_sys_socket+0x6f/0xb0 net/socket.c:1600 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 Freed by task 4352: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track+0x21/0x30 mm/kasan/common.c:45 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370 ____kasan_slab_free mm/kasan/common.c:366 [inline] ____kasan_slab_free+0x166/0x1a0 mm/kasan/common.c:328 kasan_slab_free include/linux/kasan.h:200 [inline] slab_free_hook mm/slub.c:1728 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1754 slab_free mm/slub.c:3510 [inline] kfree+0xd6/0x4d0 mm/slub.c:4552 sk_prot_free net/core/sock.c:1972 [inline] __sk_destruct+0x5e5/0x710 net/core/sock.c:2058 sk_destruct+0x131/0x180 net/core/sock.c:2076 __sk_free+0xef/0x3d0 net/core/sock.c:2087 sk_free+0x78/0xa0 net/core/sock.c:2098 sock_put include/net/sock.h:1926 [inline] sco_sock_kill+0x18d/0x1b0 net/bluetooth/sco.c:403 sco_sock_release+0x155/0x2c0 net/bluetooth/sco.c:1259 __sock_release+0xcd/0x280 net/socket.c:650 sock_close+0x18/0x20 net/socket.c:1318 __fput+0x277/0x9d0 fs/file_table.c:317 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 ptrace_notify+0x114/0x140 kernel/signal.c:2372 ptrace_report_syscall include/linux/ptrace.h:427 [inline] ptrace_report_syscall_exit include/linux/ptrace.h:489 [inline] syscall_exit_work kernel/entry/common.c:249 [inline] syscall_exit_to_user_mode_prepare+0xdb/0x230 kernel/entry/common.c:276 __syscall_exit_to_user_mode_work kernel/entry/common.c:281 [inline] syscall_exit_to_user_mode+0x9/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x46/0xb0 The buggy address belongs to the object at ffff8880164c9000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 128 bytes inside of 2048-byte region [ffff8880164c9000, ffff8880164c9800) The buggy address belongs to the physical page: page:ffffea0000593200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x164c8 head:ffffea0000593200 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000001 ffff888010c42000 raw: 0000000000000000 0000000000080008 00000001ffffffff 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 1, tgid 1 (swapper/0), ts 1664297199, free_ts 0 prep_new_page mm/page_alloc.c:2441 [inline] get_page_from_freelist+0xba2/0x3e00 mm/page_alloc.c:4182 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5408 alloc_page_interleave+0x1e/0x200 mm/mempolicy.c:2104 alloc_pages+0x2b1/0x310 mm/mempolicy.c:2267 alloc_slab_page mm/slub.c:1799 [inline] allocate_slab+0x26c/0x3c0 mm/slub.c:1944 new_slab mm/slub.c:2004 [inline] ___slab_alloc+0x8df/0xf20 mm/slub.c:3005 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3092 slab_alloc_node mm/slub.c:3183 [inline] slab_alloc mm/slub.c:3225 [inline] __kmalloc+0x318/0x350 mm/slub.c:4410 kmalloc include/linux/slab.h:586 [inline] kzalloc include/linux/slab.h:714 [inline] acpi_os_allocate_zeroed include/acpi/platform/aclinuxex.h:57 [inline] acpi_ds_build_internal_package_obj+0x2a8/0x9ab drivers/acpi/acpica/dspkginit.c:112 acpi_ds_eval_data_object_operands+0x351/0x48c drivers/acpi/acpica/dsopcode.c:638 acpi_ds_exec_end_op+0xa82/0xe4a drivers/acpi/acpica/dswexec.c:615 acpi_ps_parse_loop+0x10d0/0x1402 drivers/acpi/acpica/psloop.c:525 acpi_ps_parse_aml+0x212/0x8cc drivers/acpi/acpica/psparse.c:475 acpi_ps_execute_table+0x356/0x3eb drivers/acpi/acpica/psxface.c:295 acpi_ns_execute_table+0x3c9/0x47e drivers/acpi/acpica/nsparse.c:116 acpi_ns_load_table+0x60/0x116 drivers/acpi/acpica/nsload.c:71 page_owner free stack trace missing Memory state around the buggy address: ffff8880164c8f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880164c9000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880164c9080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880164c9100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880164c9180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================