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WARNING: CPU: 0 PID: 8459 at kernel/signal.c:376 task_participate_group_stop+0x2c0/0x370 kernel/signal.c:376
Modules linked in:
CPU: 0 PID: 8459 Comm: 4 Not tainted 5.14.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:task_participate_group_stop+0x2c0/0x370 kernel/signal.c:376
Code: 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 9d 00 00 00 48 8b ab 00 05 00 00 e9 d0 fd ff ff e8 10 a9 2d 00 <0f> 0b e9 81 fe ff ff 48 89 ef e8 d1 61 73 00 e9 4b fe ff ff e8 f7
RSP: 0018:ffffc90001ac7c50 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88802f300100 RSI: ffffffff81473830 RDI: 0000000000000003
RBP: ffff88801f39b2e8 R08: 0000000000000000 R09: 0000000000000003
R10: ffffffff814736a0 R11: 0000000000000000 R12: ffff88801f39b240
R13: ffff88802f300600 R14: 0000000000040000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000ff92ab4b CR3: 000000003950c000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_signal_stop+0x1f1/0x850 kernel/signal.c:2398
 get_signal+0xc84/0x2160 kernel/signal.c:2658
 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:865
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
 exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:209
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0023:0xb7000000
Code: Unable to access opcode bytes at RIP 0xb6ffffd6.
RSP: 002b:00000000ff92aa70 EFLAGS: 00000200 ORIG_RAX: 000000000000000b
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000