------------[ cut here ]------------
WARNING: kernel/signal.c:2174 at do_notify_parent+0x274/0x298 kernel/signal.c:2252, CPU#0: syz.0.12702/7716
Modules linked in:
CPU: 0 UID: 0 PID: 7716 Comm: syz.0.12702 Not tainted syzkaller #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
pstate: 214020c9 (nzCv daIF +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
pc : do_notify_parent+0x274/0x298 kernel/signal.c:2174
lr : exit_notify kernel/exit.c:758 [inline]
lr : do_exit+0x694/0x960 kernel/exit.c:988
sp : ffff800089963be0
x29: ffff800089963c20 x28: f2f000000462dc18 x27: fcf00000048c4300
x26: 0000000000980000 x25: f2f000000462d9d8 x24: f2f000000462d9c0
x23: ffff800082b65080 x22: ffff800089963be8 x21: 0000000000000000
x20: 0000000000000080 x19: f2f000000462d3c0 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: 00000002c48fd604
x14: f2f000000462d440 x13: 0000000000000162 x12: 00000000080cee3c
x11: f2f000000462d440 x10: fbf0000006fb1a00 x9 : 0000000000000001
x8 : 0000000000000000 x7 : 000000000000b9a0 x6 : 0000000000000322
x5 : ffffffffffff5caf x4 : fff000007d8d7640 x3 : fbf00000052b7610
x2 : 0000000000000000 x1 : 0000000000000080 x0 : f2f000000462d3c0
Call trace:
 do_notify_parent+0x274/0x298 kernel/signal.c:2252 (P)
 exit_notify kernel/exit.c:758 [inline]
 do_exit+0x694/0x960 kernel/exit.c:988
 do_group_exit+0x34/0x90 kernel/exit.c:1119
 get_signal+0x79c/0x860 kernel/signal.c:3037
 arch_do_signal_or_restart+0x11c/0x3dc arch/arm64/kernel/signal.c:1665
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop+0x114/0x19c kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:244 [inline]
 arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline]
 el0_da+0xe8/0xf0 arch/arm64/kernel/entry-common.c:557
 el0t_64_sync_handler+0xd0/0xf0 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:594
---[ end trace 0000000000000000 ]---