syzbot

random: crng init done
------------[ cut here ]------------
WARNING: CPU: 0 PID: 2071 at kernel/signal.c:343 task_participate_group_stop+0x220/0x2c0 kernel/signal.c:343
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 2071 Comm: 5 Not tainted 4.9.141+ #1
 ffff8801cd94fa60 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff
 ffffffff82a3fc00 0000000000000000 0000000000000009 ffff8801cd94fb20
 ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66
Call Trace:
 [<ffffffff81b42e79>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b42e79>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff813f7125>] panic+0x1bf/0x39f kernel/panic.c:179
 [<ffffffff813f7362>] __warn.cold.8+0x2f/0x2f kernel/panic.c:542
 [<ffffffff810dc02c>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff811064b0>] task_participate_group_stop+0x220/0x2c0 kernel/signal.c:343
 [<ffffffff8110ac93>] do_signal_stop+0x373/0x7c0 kernel/signal.c:2028
 [<ffffffff8110ec3c>] get_signal+0x5bc/0x1460 kernel/signal.c:2205
 [<ffffffff81052aa5>] do_signal+0x95/0x1b00 arch/x86/kernel/signal.c:807
 [<ffffffff81003e2e>] exit_to_usermode_loop+0x10e/0x150 arch/x86/entry/common.c:158
 [<ffffffff81005932>] prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
 [<ffffffff81005932>] syscall_return_slowpath arch/x86/entry/common.c:263 [inline]
 [<ffffffff81005932>] do_syscall_64+0x3e2/0x550 arch/x86/entry/common.c:290
 [<ffffffff82817893>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..