kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8017 Comm: syz-executor2 Not tainted 5.0.0-rc1-next-20190108 #7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:fire_user_return_notifiers+0xae/0x160 kernel/user-return-notifier.c:41
Code: 00 00 00 00 fc ff df 75 10 eb 4a e8 bc 7a e3 ff 48 83 eb 08 49 89 dc 74 3c e8 ae 7a e3 ff 49 8d 7c 24 08 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 75 71 4c 89 e0 49 8b 5c 24 08 48 c1 e8 03 42 80 3c
RSP: 0018:ffff8880982a7d88 EFLAGS: 00010a02
RAX: 1bd5a00000000020 RBX: dead0000000000f8 RCX: ffffffff810d6247
RDX: 0000000000000000 RSI: ffffffff819e9de2 RDI: dead000000000100
RBP: ffff8880982a7da8 R08: ffff8880984d4440 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead0000000000f8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880984d4440
FS:  0000000001c9e940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000089cba000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 exit_to_usermode_loop+0x251/0x3b0 arch/x86/entry/common.c:171
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x696/0x800 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x485540
Code: 00 00 48 c7 c0 d4 ff ff ff 64 c7 00 16 00 00 00 31 c0 eb be 66 0f 1f 44 00 00 83 3d 11 12 5d 00 00 75 14 b8 23 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 c4 e0 f8 ff c3 48 83 ec 08 e8 3a 55 fd ff
RSP: 002b:00007ffc26b26aa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000023
RAX: 0000000000000000 RBX: 00000000000ef0ea RCX: 0000000000485540
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffc26b26ab0
RBP: 0000000000001124 R08: 0000000000000001 R09: 0000000001c9e940
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000b
R13: 00000000000eee1e R14: 00000000000005bd R15: 0000000000000002
Modules linked in:
---[ end trace 5872bbc12b69c032 ]---
RIP: 0010:fire_user_return_notifiers+0xae/0x160 kernel/user-return-notifier.c:41
Code: 00 00 00 00 fc ff df 75 10 eb 4a e8 bc 7a e3 ff 48 83 eb 08 49 89 dc 74 3c e8 ae 7a e3 ff 49 8d 7c 24 08 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 75 71 4c 89 e0 49 8b 5c 24 08 48 c1 e8 03 42 80 3c
RSP: 0018:ffff8880982a7d88 EFLAGS: 00010a02
RAX: 1bd5a00000000020 RBX: dead0000000000f8 RCX: ffffffff810d6247
RDX: 0000000000000000 RSI: ffffffff819e9de2 RDI: dead000000000100
RBP: ffff8880982a7da8 R08: ffff8880984d4440 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead0000000000f8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880984d4440
FS:  0000000001c9e940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000089cba000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400