On Mon, Dec 18, 2017 at 08:23:01AM -0800, syzbot wrote: > Hello, > > syzkaller hit the following crash on > 6084b576dca2e898f5c101baef151f7bfdbb606d > git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw console output is attached. > C reproducer is attached > syzkaller reproducer is attached. See https://goo.gl/kgGztJ > for information about syzkaller reproducers > > > RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000444119 > RDX: 0000000000000004 RSI: 0000000000000001 RDI: 0000000000000003 > RBP: 0000000000000005 R08: 0000000000000001 R09: 0000000000000032 > R10: 00000000207a6000 R11: 0000000000000246 R12: 0000000000401e60 > R13: 0000000000401ef0 R14: 0000000000000000 R15: 0000000000000000 > BUG: unable to handle kernel NULL pointer dereference at (null) > IP: binder_poll+0x28/0xf0 drivers/android/binder.c:4371 > PGD 2134c1067 P4D 2134c1067 PUD 214180067 PMD 0 > Oops: 0000 [#1] SMP > Dumping ftrace buffer: > (ftrace buffer empty) > Modules linked in: > CPU: 0 PID: 3117 Comm: syzkaller406906 Not tainted 4.15.0-rc3-next-20171214+ > #67 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > RIP: 0010:binder_poll+0x28/0xf0 drivers/android/binder.c:4371 > RSP: 0018:ffffc900017d3df0 EFLAGS: 00010286 > RAX: 0000000000000000 RBX: ffffc900017d3ef0 RCX: ffffffff820258f3 > RDX: 0000000000000000 RSI: ffffffff83080700 RDI: 0000000000000286 > RBP: ffffc900017d3e20 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000000 R12: ffffc900017d3ef0 > R13: ffff8802118fb000 R14: ffffffff82bb9f20 R15: ffff8802140d1c30 > FS: 0000000000deb880(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000000 CR3: 0000000216bbc002 CR4: 00000000001606f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > ep_item_poll.isra.10+0x49/0xf0 fs/eventpoll.c:885 > ep_insert fs/eventpoll.c:1457 [inline] > SYSC_epoll_ctl fs/eventpoll.c:2104 [inline] > SyS_epoll_ctl+0x884/0x1010 fs/eventpoll.c:1990 > entry_SYSCALL_64_fastpath+0x1f/0x96 > RIP: 0033:0x444119 > RSP: 002b:00007fffbc6b55b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 > RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000444119 > RDX: 0000000000000004 RSI: 0000000000000001 RDI: 0000000000000003 > RBP: 0000000000000005 R08: 0000000000000001 R09: 0000000000000032 > R10: 00000000207a6000 R11: 0000000000000246 R12: 0000000000401e60 > R13: 0000000000401ef0 R14: 0000000000000000 R15: 0000000000000000 > Code: ff 66 90 55 48 89 e5 41 57 41 56 41 55 41 54 49 89 fd 53 49 89 f4 48 > 83 ec 08 e8 24 49 29 ff 49 8b bd 90 01 00 00 e8 78 fd ff ff <48> 8b 38 48 89 > c3 be 15 11 00 00 e8 e8 7e ff ff 44 8b 73 34 44 > RIP: binder_poll+0x28/0xf0 drivers/android/binder.c:4371 RSP: > ffffc900017d3df0 > CR2: 0000000000000000 Duplicate of: #syz dup: general protection fault in binder_poll _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
