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
Modules linked in:
CPU: 1 PID: 12473 Comm: syz-executor.3 Not tainted 4.14.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880a08722c0 task.stack: ffff88820c178000
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:mm_update_next_owner+0x367/0x5b0 kernel/exit.c:451
RSP: 0018:ffff88820c17faa0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: dffffc0000000000 RCX: 00000000026b904f
RDX: 0000000000000000 RSI: 0000000000000100 RDI: ffff8880004d0ac0
RBP: 0000000000000000 R08: ffff88804daca4f0 R09: ffffffff8a063e88
R10: ffff8880a0872b40 R11: ffff8880a08722c0 R12: ffff888085cb9900
R13: 0000000000000010 R14: ffff8880a08722c0 R15: ffff888091847900
FS:  0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055759a0018e8 CR3: 000000021427a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 exit_mm kernel/exit.c:544 [inline]
 do_exit+0x92b/0x2b00 kernel/exit.c:845
 do_group_exit+0x100/0x310 kernel/exit.c:955
 get_signal+0x385/0x1ca0 kernel/signal.c:2423
 do_signal+0x7c/0x1690 arch/x86/kernel/signal.c:814
 exit_to_usermode_loop+0x159/0x220 arch/x86/entry/common.c:160
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c889
RSP: 002b:00007ffcecb37f18 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 000000000045c889
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000076bfa8
RBP: 000000000076bfac R08: 0000000000770888 R09: 01ffffffffffffff
R10: 00007ffcecb37fe0 R11: 0000000000000246 R12: 000000000076bfa0
R13: 0000000000000005 R14: 0000000000000001 R15: 000000000076bfac
Code: 00 48 8d bd 20 03 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 fb 01 00 00 48 8b ad 20 03 00 00 4c 8d 6d 10 4c 89 e8 48 c1 e8 03 <80> 3c 18 00 0f 85 d2 01 00 00 48 8b 45 10 48 8d a8 68 fa ff ff 
RIP: __read_once_size include/linux/compiler.h:183 [inline] RSP: ffff88820c17faa0
RIP: mm_update_next_owner+0x367/0x5b0 kernel/exit.c:451 RSP: ffff88820c17faa0
---[ end trace 59c089045b5cf7c1 ]---