syzbot

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kcov->t != t
WARNING: kernel/kcov.c:483 at kcov_task_exit+0xf5/0x160 kernel/kcov.c:483, CPU#1: syz.1.2654/11424
Modules linked in:
CPU: 1 UID: 0 PID: 11424 Comm: syz.1.2654 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:kcov_task_exit+0xf5/0x160 kernel/kcov.c:483
Code: 10 00 00 48 8b bb 90 00 00 00 e8 b6 5f 54 00 48 89 df 5b 41 5e 41 5f e9 b9 38 5a 00 7c 1c 5b 41 5e 41 5f e9 cd 88 63 09 cc 90 <0f> 0b 90 4c 89 f7 5b 41 5e 41 5f e9 2b 22 62 09 48 89 df be 03 00
RSP: 0000:ffffc90005d17ae0 EFLAGS: 00010283
RAX: 04c876d9e7ccc900 RBX: ffff88802546f100 RCX: 0000000000000000
RDX: 00000000a8e24bb6 RSI: ffffffff8ba67a60 RDI: 00000000ffffffff
RBP: ffffc90005d17c28 R08: ffffffff8b26a1d0 R09: ffffffff8ddcb980
R10: dffffc0000000000 R11: fffffbfff1ed4ef7 R12: dffffc0000000000
R13: 0000000000000009 R14: ffff88802546f108 R15: ffff8880401e3d00
FS:  0000555577bd1500(0000) GS:ffff888126432000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fec6721da08 CR3: 0000000060e8e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 do_exit+0x150/0x23c0 kernel/exit.c:909
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1118
 get_signal+0x125c/0x1310 kernel/signal.c:3034
 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe07923c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc897db4a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffc897db590 RCX: 00007fe07923c819
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000051443 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b2e020000 R11: 0000000000000246 R12: 00007ffc897db5d0
R13: 00007fe0794b5fac R14: 00000000000518ac R15: 00007fe0794b5fa0
 </TASK>