Re: BUG: unable to handle kernel paging request in __pm_runtime_resume

[Andrey Konovalov]

On Fri, Sep 20, 2019 at 8:59 PM syzbot
<syzbot+28ecdc146b8e7def92dd@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:    e0bd8d79 usb-fuzzer: main usb gadget fuzzer driver
> git tree:       https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=1670fa55600000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=8847e5384a16f66a
> dashboard link: https://syzkaller.appspot.com/bug?extid=28ecdc146b8e7def92dd
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
>
> Unfortunately, I don't have any reproducer for this crash yet.
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+28ecdc146b8e7def92dd@xxxxxxxxxxxxxxxxxxxxxxxxx
>
> BUG: unable to handle page fault for address: fffffbfff23530b1
> #PF: supervisor read access in kernel mode
> #PF: error_code(0x0000) - not-present page
> PGD 21ffef067 P4D 21ffef067 PUD 21ffb2067 PMD 0
> Oops: 0000 [#1] SMP KASAN
> CPU: 1 PID: 17297 Comm: syz-executor.5 Not tainted 5.3.0+ #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> Google 01/01/2011
> RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:92 [inline]
> RIP: 0010:memory_is_nonzero mm/kasan/generic.c:109 [inline]
> RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:135 [inline]
> RIP: 0010:memory_is_poisoned mm/kasan/generic.c:166 [inline]
> RIP: 0010:check_memory_region_inline mm/kasan/generic.c:182 [inline]
> RIP: 0010:check_memory_region+0x117/0x190 mm/kasan/generic.c:192
> Code: 75 2f 49 89 e9 49 29 c1 e9 6c ff ff ff 5b b8 01 00 00 00 5d 41 5c c3
> 4d 85 c9 74 f1 49 01 d9 eb 09 48 83 c0 01 4c 39 c8 74 e3 <80> 38 00 74 f2
> eb 92 4d 39 c2 74 4b e8 f8 e7 ff ff 31 c0 5b 5d 41
> RSP: 0018:ffff8881c7427710 EFLAGS: 00010086
> RAX: fffffbfff23530b1 RBX: fffffbfff23530b1 RCX: ffffffff8125804b
> RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff91a98588
> RBP: fffffbfff23530b2 R08: 0000000000000001 R09: fffffbfff23530b2
> R10: fffffbfff23530b1 R11: ffffffff91a9858f R12: ba771047467ec365
> R13: 00000000467ec365 R14: 0000000000000003 R15: ffff8881cbca2078
> FS:  00007f1c25a58700(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: fffffbfff23530b1 CR3: 00000001d664d000 CR4: 00000000001406e0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
>   test_bit include/asm-generic/bitops-instrumented.h:237 [inline]
>   __lock_acquire+0x133b/0x3eb0 kernel/locking/lockdep.c:3925
>   lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4487
>   __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
>   _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159
>   __pm_runtime_resume+0xf5/0x180 drivers/base/power/runtime.c:1077
>   pm_runtime_get_sync include/linux/pm_runtime.h:226 [inline]
>   usb_autopm_get_interface+0x1b/0x50 drivers/usb/core/driver.c:1709
>   usbhid_power+0x7c/0xe0 drivers/hid/usbhid/hid-core.c:1234
>   hid_hw_power include/linux/hid.h:1038 [inline]
>   hidraw_open+0x20d/0x740 drivers/hid/hidraw.c:282
>   chrdev_open+0x219/0x5c0 fs/char_dev.c:414
>   do_dentry_open+0x494/0x1120 fs/open.c:797
>   do_last fs/namei.c:3408 [inline]
>   path_openat+0x1430/0x3f50 fs/namei.c:3525
>   do_filp_open+0x1a1/0x280 fs/namei.c:3555
>   do_sys_open+0x3c0/0x580 fs/open.c:1089
>   do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:290
>   entry_SYSCALL_64_after_hwframe+0x49/0xbe
> RIP: 0033:0x4138f1
> Code: 75 14 b8 02 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48
> 83 ec 08 e8 0a fa ff ff 48 89 04 24 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48
> 89 c2 e8 53 fa ff ff 48 89 d0 48 83 c4 08 48 3d 01
> RSP: 002b:00007f1c25a577a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
> RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00000000004138f1
> RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f1c25a57850
> RBP: 000000000075bf20 R08: 000000000000000f R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000293 R12: 00007f1c25a586d4
> R13: 00000000004c8df7 R14: 00000000004dff20 R15: 00000000ffffffff
> Modules linked in:
> CR2: fffffbfff23530b1
> ---[ end trace 839607b5f3b5bbdf ]---
> RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:92 [inline]
> RIP: 0010:memory_is_nonzero mm/kasan/generic.c:109 [inline]
> RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:135 [inline]
> RIP: 0010:memory_is_poisoned mm/kasan/generic.c:166 [inline]
> RIP: 0010:check_memory_region_inline mm/kasan/generic.c:182 [inline]
> RIP: 0010:check_memory_region+0x117/0x190 mm/kasan/generic.c:192
> Code: 75 2f 49 89 e9 49 29 c1 e9 6c ff ff ff 5b b8 01 00 00 00 5d 41 5c c3
> 4d 85 c9 74 f1 49 01 d9 eb 09 48 83 c0 01 4c 39 c8 74 e3 <80> 38 00 74 f2
> eb 92 4d 39 c2 74 4b e8 f8 e7 ff ff 31 c0 5b 5d 41
> RSP: 0018:ffff8881c7427710 EFLAGS: 00010086
> RAX: fffffbfff23530b1 RBX: fffffbfff23530b1 RCX: ffffffff8125804b
> RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff91a98588
> RBP: fffffbfff23530b2 R08: 0000000000000001 R09: fffffbfff23530b2
> R10: fffffbfff23530b1 R11: ffffffff91a9858f R12: ba771047467ec365
> R13: 00000000467ec365 R14: 0000000000000003 R15: ffff8881cbca2078
> FS:  00007f1c25a58700(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: fffffbfff23530b1 CR3: 00000001d664d000 CR4: 00000000001406e0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>
>
> ---
> This bug is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxxx
>
> syzbot will keep track of this bug report. See:
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#syz dup: general protection fault in __pm_runtime_resume