Bluetooth: hci0 command 0x0406 tx timeout ================================================================== BUG: KASAN: stack-out-of-bounds in deref_stack_regs arch/x86/kernel/unwind_orc.c:312 [inline] BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x142e/0x17d0 arch/x86/kernel/unwind_orc.c:444 Read of size 8 at addr ffff88807d7f7d78 by task syz-executor.5/25506 CPU: 0 PID: 25506 Comm: syz-executor.5 Not tainted 4.14.198-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252 kasan_report_error.cold+0x8a/0x194 mm/kasan/report.c:351 kasan_report mm/kasan/report.c:409 [inline] __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430 deref_stack_regs arch/x86/kernel/unwind_orc.c:312 [inline] unwind_next_frame+0x142e/0x17d0 arch/x86/kernel/unwind_orc.c:444 __save_stack_trace+0x90/0x160 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3496 [inline] kmem_cache_free+0x7c/0x2b0 mm/slab.c:3758 __rcu_reclaim kernel/rcu/rcu.h:195 [inline] rcu_do_batch kernel/rcu/tree.c:2699 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline] rcu_process_callbacks+0x780/0x1180 kernel/rcu/tree.c:2946 __do_softirq+0x254/0xa1d kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:774 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:796 [inline] RIP: 0010:lock_is_held_type+0x81/0x210 kernel/locking/lockdep.c:4032 RSP: 0018:ffff88807d7f7b48 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff0fa2d20 RBX: ffff88807bc16200 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 00000000ffffffff RDI: ffff88807bc16a84 RBP: ffffffff87d84de0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffff88807bc16200 R12: ffffffff82cdcaec R13: 0000000000000000 R14: ffffed10133a4b82 R15: 0000000000000010 context_destroy security/selinux/ss/context.h:145 [inline] security_compute_sid.part.0+0xa5c/0xfe0 security/selinux/ss/services.c:1743 retint_kernel+0x2d/0x2d RIP: 87894e4c:selinux_socket_create+0x358/0x4b0 RSP: 82ca32d0:ffffffff87901319 EFLAGS: 41b58ab3 ORIG_RAX: 0000000000000001 RAX: 1ffff1100fafefae RBX: 0000000000000001 RCX: ffff88809096dd80 RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff88809096dd84 RBP: 0000000000000010 R08: 0000000000000001 R09: ffffffff82ce208b R10: 0000000000000001 R11: 0000000000000001 R12: ffff88807d7f7d90 R13: 0000000000000000 R14: ffffffff87899048 R15: 0000000041b58ab3 The buggy address belongs to the page: page:ffffea0001f5fdc0 count:0 mapcount:0 mapping: (null) index:0x0 flags: 0xfffe0000000000() raw: 00fffe0000000000 0000000000000000 0000000000000000 00000000ffffffff raw: 0000000000000000 0000000100000001 0000000000000000 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88807d7f7c00: f1 f1 00 00 00 f2 f2 f2 00 00 00 f2 f2 f2 f2 f2 ffff88807d7f7c80: 00 00 00 00 00 00 00 00 00 f3 f3 f3 f3 f3 00 00 >ffff88807d7f7d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 ^ ffff88807d7f7d80: f1 f1 04 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 ffff88807d7f7e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================