new mount options do not match the existing superblock, will be ignored audit: type=1800 audit(1675107423.051:56): pid=10809 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="sda1" ino=14060 res=0 ================================================================== BUG: KASAN: stack-out-of-bounds in deref_stack_regs arch/x86/kernel/unwind_orc.c:304 [inline] BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x146f/0x17d0 arch/x86/kernel/unwind_orc.c:437 Read of size 8 at addr ffff888047a67970 by task syz-executor.1/10797 CPU: 1 PID: 10797 Comm: syz-executor.1 Not tainted 4.14.304-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351 audit: type=1800 audit(1675107423.051:57): pid=10806 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14061 res=0 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:304 [inline] unwind_next_frame+0x146f/0x17d0 arch/x86/kernel/unwind_orc.c:437 perf_callchain_kernel+0x38c/0x520 arch/x86/events/core.c:2344 get_perf_callchain+0x2de/0x740 kernel/events/callchain.c:217 perf_callchain+0x147/0x190 kernel/events/callchain.c:190 perf_prepare_sample+0x6a0/0x13a0 kernel/events/core.c:6171 __perf_event_output kernel/events/core.c:6287 [inline] perf_event_output_forward+0xc9/0x1f0 kernel/events/core.c:6305 __perf_event_overflow+0x113/0x310 kernel/events/core.c:7554 perf_swevent_hrtimer+0x229/0x360 kernel/events/core.c:8762 __run_hrtimer kernel/time/hrtimer.c:1223 [inline] __hrtimer_run_queues+0x2fe/0xc70 kernel/time/hrtimer.c:1287 hrtimer_interrupt+0x1b9/0x470 kernel/time/hrtimer.c:1321 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1079 [inline] smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1104 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:796 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:ffff888047a67858 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e13d8 RBX: ffff88809864c3c0 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88809864cc44 RBP: ffff88809debe3a0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffff88809864c3c0 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 __pipe_lock fs/pipe.c:103 [inline] pipe_release+0x49/0x300 fs/pipe.c:598 __trace_hardirqs_on_caller kernel/locking/lockdep.c:2883 [inline] trace_hardirqs_on_caller+0x3a8/0x580 kernel/locking/lockdep.c:2930 retint_kernel+0x2d/0x2d RIP: 8195a900:ORMASK+0x1bd28/0x16976b RSP: 88b782b2:0000000000000000 EFLAGS: ffffffff818e0527 ORIG_RAX: 0000000041b58ab3 RAX: ffff8880911f3a10 RBX: 0000000041b58ab3 RCX: 0000000000000010 RDX: ffff888000000010 RSI: 0000000000000000 RDI: 1ffff11008f4cf2d RBP: ffffffff81418c18 R08: 000000013fff7057 R09: ffff8880480f9538 R10: ffffffff872433c0 R11: ffffffff88b613d8 R12: ffffffff8195b274 R13: ffffffff8188f679 R14: ffff88809debe3a0 R15: 0000000000000000 The buggy address belongs to the page: page:ffffea00011e99c0 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: ffff888047a67800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888047a67880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888047a67900: 00 00 00 f1 f1 f1 f1 00 00 00 f2 00 00 00 f2 f2 ^ ffff888047a67980: f2 00 00 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 00 ffff888047a67a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================