process 'memfd:[X[mdȅHX% elZ' started with executable stack ------------[ cut here ]------------ WARNING: CPU: 1 PID: 8463 at kernel/signal.c:376 task_participate_group_stop+0x2c0/0x370 kernel/signal.c:376 Modules linked in: CPU: 1 PID: 8463 Comm: 4 Not tainted 5.14.0-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 08 05 00 00 e9 d0 fd ff ff e8 e0 f4 2d 00 <0f> 0b e9 81 fe ff ff 48 89 ef e8 d1 bf 73 00 e9 4b fe ff ff e8 c7 RSP: 0018:ffffc90001867c50 EFLAGS: 00010093 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801d61e000 RSI: ffffffff814759a0 RDI: 0000000000000003 RBP: ffff888025e0a3a8 R08: 0000000000000000 R09: 0000000000000003 R10: ffffffff81475810 R11: 0000000000000000 R12: ffff888025e0a300 R13: ffff88801d61e508 R14: 0000000000040000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000ffbbe37b CR3: 00000000143ba000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_signal_stop+0x1f1/0x850 kernel/signal.c:2413 get_signal+0xc84/0x2160 kernel/signal.c:2673 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:00000000ffbbe2a0 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