From: syzbot <syzbot+55de1eb4975dec156d8f@syzkaller.appspotmail.com>
To: arve@android.com, christian@brauner.io,
devel@driverdev.osuosl.org, dvyukov@google.com,
gregkh@linuxfoundation.org, joel@joelfernandes.org,
kernel-team@android.com, linux-kernel@vger.kernel.org,
maco@android.com, maco@google.com,
syzkaller-bugs@googlegroups.com, tkjos@android.com,
tkjos@google.com
Subject: Re: kernel BUG at drivers/android/binder_alloc.c:LINE! (2)
Date: Thu, 14 Feb 2019 21:38:02 -0800 [thread overview]
Message-ID: <000000000000b4a7670581e82de5@google.com> (raw)
In-Reply-To: <00000000000048c0060581d8fe23@google.com>
syzbot has found a reproducer for the following crash on:
HEAD commit: b3418f8bddf4 Add linux-next specific files for 20190214
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=12ccad60c00000
kernel config: https://syzkaller.appspot.com/x/.config?x=8a3a37525a677c71
dashboard link: https://syzkaller.appspot.com/bug?extid=55de1eb4975dec156d8f
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16f63047400000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12a2ed58c00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+55de1eb4975dec156d8f@syzkaller.appspotmail.com
------------[ cut here ]------------
kernel BUG at drivers/android/binder_alloc.c:1141!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7540 Comm: syz-executor013 Not tainted 5.0.0-rc6-next-20190214
#35
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510
drivers/android/binder_alloc.c:1141
Code: 02 00 0f 85 20 04 00 00 4d 8b 64 24 58 49 29 dc e8 9f e1 26 fc 4c 89
e6 4c 89 ef e8 b4 e2 26 fc 4d 39 e5 76 07 e8 8a e1 26 fc <0f> 0b e8 83 e1
26 fc 4c 8b 75 d0 4d 29 ec 4c 89 e6 4c 89 f7 e8 91
RSP: 0018:ffff88804a6cf558 EFLAGS: 00010293
RAX: ffff888033dc61c0 RBX: 0000000020001000 RCX: ffffffff8549806c
RDX: 0000000000000000 RSI: ffffffff85498076 RDI: 0000000000000006
RBP: ffff88804a6cf5d8 R08: ffff888033dc61c0 R09: 0000000000000028
R10: ffffed10094d9f01 R11: ffff88804a6cf80f R12: 0000000000000008
R13: 0000000000000028 R14: ffff888069c1c210 R15: 0000000000000000
FS: 00000000017d9940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007b49a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
binder_alloc_copy_from_buffer+0x37/0x42 drivers/android/binder_alloc.c:1187
binder_get_object+0xa2/0x1e0 drivers/android/binder.c:2062
binder_transaction+0x2b4a/0x6690 drivers/android/binder.c:3231
binder_thread_write+0x64a/0x2820 drivers/android/binder.c:3792
binder_ioctl_write_read drivers/android/binder.c:4825 [inline]
binder_ioctl+0x1033/0x183b drivers/android/binder.c:5002
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x444579
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7
48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff
ff 0f 83 7b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff3621c708 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fff3621c710 RCX: 0000000000444579
RDX: 0000000020000440 RSI: 00000000c0306201 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000401000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402280
R13: 0000000000402310 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace e53003f51f970669 ]---
RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510
drivers/android/binder_alloc.c:1141
Code: 02 00 0f 85 20 04 00 00 4d 8b 64 24 58 49 29 dc e8 9f e1 26 fc 4c 89
e6 4c 89 ef e8 b4 e2 26 fc 4d 39 e5 76 07 e8 8a e1 26 fc <0f> 0b e8 83 e1
26 fc 4c 8b 75 d0 4d 29 ec 4c 89 e6 4c 89 f7 e8 91
RSP: 0018:ffff88804a6cf558 EFLAGS: 00010293
RAX: ffff888033dc61c0 RBX: 0000000020001000 RCX: ffffffff8549806c
RDX: 0000000000000000 RSI: ffffffff85498076 RDI: 0000000000000006
RBP: ffff88804a6cf5d8 R08: ffff888033dc61c0 R09: 0000000000000028
R10: ffffed10094d9f01 R11: ffff88804a6cf80f R12: 0000000000000008
R13: 0000000000000028 R14: ffff888069c1c210 R15: 0000000000000000
FS: 00000000017d9940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007b49a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
prev parent reply other threads:[~2019-02-15 5:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-14 11:31 kernel BUG at drivers/android/binder_alloc.c:LINE! (2) syzbot
2019-02-14 11:35 ` syzbot
2019-02-14 22:34 ` Todd Kjos
2019-02-14 22:36 ` syzbot
2019-02-14 22:46 ` Todd Kjos
2019-02-14 23:04 ` syzbot
2019-02-15 5:38 ` syzbot [this message]
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