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: 0 PID: 8794 Comm: syz-executor.3 Not tainted 5.5.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:fire_user_return_notifiers+0x90/0x110 kernel/user-return-notifier.c:42
Code: 00 48 8b 1b 48 85 db 74 06 48 83 c3 f8 75 10 e8 66 06 e2 ff eb 54 0f 1f 40 00 e8 5b 06 e2 ff 48 8d 7b 08 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 54 49 1e 00 4c 8b 73 08 48 89 d8 48 c1 e8
RSP: 0018:ffffc90001f07e38 EFLAGS: 00010a02
RAX: 1bd5a00000000020 RBX: dead0000000000f8 RCX: ffff888064702400
RDX: 0000000000000000 RSI: 0000000000000000 RDI: dead000000000100
RBP: ffffc90001f07e50 R08: ffffffff8109cfbd R09: ffffed100c8e0481
R10: ffffed100c8e0481 R11: 0000000000000000 R12: 0000000000000800
R13: dffffc0000000000 R14: dead000000000100 R15: dffffc0000000000
FS:  0000000001ef5940(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000ffffff CR3: 0000000064704000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 exit_to_usermode_loop arch/x86/entry/common.c:169 [inline]
 prepare_exit_to_usermode+0x420/0x5b0 arch/x86/entry/common.c:195
 syscall_return_slowpath+0x113/0x4a0 arch/x86/entry/common.c:278
 do_syscall_64+0x11f/0x1c0 arch/x86/entry/common.c:304
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4594a0
Code: c0 5b 5d c3 66 0f 1f 44 00 00 8b 04 24 48 83 c4 18 5b 5d c3 66 0f 1f 44 00 00 83 3d 91 f4 61 00 00 75 14 b8 23 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 d4 d1 fb ff c3 48 83 ec 08 e8 ea 46 00 00
RSP: 002b:00007fff05f536c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000023
RAX: 0000000000000000 RBX: 000000000003f9dc RCX: 00000000004594a0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fff05f536d0
RBP: 0000000000000311 R08: 0000000000000001 R09: 0000000001ef5940
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000b
R13: 00007fff05f53720 R14: 000000000003f6ae R15: 00007fff05f53730
Modules linked in:
---[ end trace 40107dd0d0328187 ]---
RIP: 0010:fire_user_return_notifiers+0x90/0x110 kernel/user-return-notifier.c:42
Code: 00 48 8b 1b 48 85 db 74 06 48 83 c3 f8 75 10 e8 66 06 e2 ff eb 54 0f 1f 40 00 e8 5b 06 e2 ff 48 8d 7b 08 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 54 49 1e 00 4c 8b 73 08 48 89 d8 48 c1 e8
RSP: 0018:ffffc90001f07e38 EFLAGS: 00010a02
RAX: 1bd5a00000000020 RBX: dead0000000000f8 RCX: ffff888064702400
RDX: 0000000000000000 RSI: 0000000000000000 RDI: dead000000000100
RBP: ffffc90001f07e50 R08: ffffffff8109cfbd R09: ffffed100c8e0481
R10: ffffed100c8e0481 R11: 0000000000000000 R12: 0000000000000800
R13: dffffc0000000000 R14: dead000000000100 R15: dffffc0000000000
FS:  0000000001ef5940(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000ffffff CR3: 0000000064704000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400