wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready ================================================================== BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x1360/0x17d0 arch/x86/kernel/unwind_orc.c:470 Read of size 8 at addr ffff88808752fca8 by task syz-executor.5/17307 CPU: 0 PID: 17307 Comm: syz-executor.5 Not tainted 4.14.204-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 unwind_next_frame+0x1360/0x17d0 arch/x86/kernel/unwind_orc.c:470 perf_callchain_kernel+0x38c/0x520 arch/x86/events/core.c:2343 get_perf_callchain+0x2df/0x740 kernel/events/callchain.c:217 perf_callchain+0x147/0x190 kernel/events/callchain.c:190 perf_prepare_sample+0xd77/0x1380 kernel/events/core.c:6163 __perf_event_output kernel/events/core.c:6279 [inline] perf_event_output_forward+0xc9/0x1f0 kernel/events/core.c:6297 __perf_event_overflow+0x113/0x310 kernel/events/core.c:7542 perf_swevent_hrtimer+0x220/0x350 kernel/events/core.c:8752 __run_hrtimer kernel/time/hrtimer.c:1223 [inline] __hrtimer_run_queues+0x30b/0xc80 kernel/time/hrtimer.c:1287 hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline] smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100 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_acquire+0x97/0x3f0 kernel/locking/lockdep.c:3993 RSP: 0018:ffff88808752fbd0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e1230 RBX: ffff888087774040 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880877748c4 RBP: ffff888087775248 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffff888087774040 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 perf_remove_from_owner kernel/events/core.c:4308 [inline] perf_event_release_kernel+0x4b4/0x8a0 kernel/events/core.c:4354 retint_kernel+0x2d/0x2d RIP: 41b58ab3:lock_acquire+0x170/0x3f0 RSP: 0282:ffffffff8142dec0 EFLAGS: ffffffff88b53334 ORIG_RAX: ffff8880877748c0 RAX: ffffffff8beb4d40 RBX: 1ffff11010ea5fa9 RCX: ffff888087774040 RDX: 0000000000000001 RSI: 0000000000000282 RDI: 0000000000000282 RBP: ffff8880a4b9bdc0 R08: ffffffff816798ca R09: ffffffff88f77500 R10: 1ffff11010ea5fa2 R11: 0000000000000000 R12: ffffffff871fba60 R13: ffffffff88b52ff8 R14: 0000000041b58ab3 R15: ffff8880a4d600d0 The buggy address belongs to the page: page:ffffea00021d4bc0 count:0 mapcount:0 mapping: (null) index:0x0 flags: 0xfff00000000000() raw: 00fff00000000000 0000000000000000 0000000000000000 00000000ffffffff raw: 0000000000000000 0000000100000001 0000000000000000 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88808752fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88808752fc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88808752fc80: 00 00 f1 f1 f1 f1 00 00 00 f2 00 00 00 f2 f2 f2 ^ ffff88808752fd00: 00 00 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 ffff88808752fd80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================