BUG: unable to handle kernel paging request at ffff88022be69240 binder: BINDER_SET_CONTEXT_MGR already set binder: 20230:20234 ioctl 40046207 0 returned -16 IP: __read_once_size include/linux/compiler.h:183 [inline] IP: __rhashtable_lookup include/linux/rhashtable.h:631 [inline] IP: rhashtable_lookup include/linux/rhashtable.h:666 [inline] IP: rhashtable_lookup_fast include/linux/rhashtable.h:692 [inline] IP: ipc_findkey ipc/util.c:183 [inline] IP: ipcget_public ipc/util.c:378 [inline] IP: ipcget+0x12a/0x620 ipc/util.c:654 PGD 404e067 P4D 404e067 PUD 4051067 PMD 0 Oops: 0000 [#1] SMP Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 20231 Comm: syz-executor3 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:__read_once_size include/linux/compiler.h:183 [inline] RIP: 0010:__rhashtable_lookup include/linux/rhashtable.h:631 [inline] RIP: 0010:rhashtable_lookup include/linux/rhashtable.h:666 [inline] RIP: 0010:rhashtable_lookup_fast include/linux/rhashtable.h:692 [inline] RIP: 0010:ipc_findkey ipc/util.c:183 [inline] RIP: 0010:ipcget_public ipc/util.c:378 [inline] RIP: 0010:ipcget+0x12a/0x620 ipc/util.c:654 RSP: 0018:ffffc90000dafea0 EFLAGS: 00010216 RAX: 0000000000010000 RBX: 00000000059015b8 RCX: ffffffff8161ed2a RDX: 0000000000000018 RSI: ffffc900037bb000 RDI: ffffc90000dafedc RBP: ffffc90000daff08 R08: 0000000000000001 R09: 0000000000000002 R10: ffffc90000dafe28 R11: 0000000000000002 R12: ffff8801fccdf808 R13: ffffc90000daff18 R14: ffff8801ff65e400 R15: ffff88022be69240 FS: 00007ffb8b75b700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88022be69240 CR3: 00000001ff6a5002 CR4: 00000000001606f0 DR0: 0000000020000000 DR1: 0000000020001000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: SYSC_semget ipc/sem.c:578 [inline] SyS_semget+0x6c/0x90 ipc/sem.c:559 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a09 RSP: 002b:00007ffb8b75ac58 EFLAGS: 00000212 ORIG_RAX: 0000000000000040 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452a09 RDX: 0000000000000350 RSI: 0000000000000002 RDI: 00000000798e263f RBP: 00000000000002c3 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f12e8 R13: 00000000ffffffff R14: 00007ffb8b75b6d4 R15: 0000000000000000 Code: 41 8b 0e c1 e8 05 8d 59 ff 21 c3 41 8b 4e 04 85 c9 0f 85 d5 03 00 00 e8 25 b6 c9 ff 89 d8 4d 8d bc c6 80 00 00 00 e8 16 b6 c9 ff <4d> 8b 3f 4c 89 7d a0 e8 8a e6 c2 ff 85 c0 74 12 e8 01 b6 c9 ff RIP: __read_once_size include/linux/compiler.h:183 [inline] RSP: ffffc90000dafea0 RIP: __rhashtable_lookup include/linux/rhashtable.h:631 [inline] RSP: ffffc90000dafea0 RIP: rhashtable_lookup include/linux/rhashtable.h:666 [inline] RSP: ffffc90000dafea0 RIP: rhashtable_lookup_fast include/linux/rhashtable.h:692 [inline] RSP: ffffc90000dafea0 RIP: ipc_findkey ipc/util.c:183 [inline] RSP: ffffc90000dafea0 RIP: ipcget_public ipc/util.c:378 [inline] RSP: ffffc90000dafea0 RIP: ipcget+0x12a/0x620 ipc/util.c:654 RSP: ffffc90000dafea0 CR2: ffff88022be69240 ---[ end trace bf897be89b5fab13 ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..