syzbot

------------[ cut here ]------------
kcov->t != t
WARNING: kernel/kcov.c:483 at kcov_task_exit+0xf5/0x160 kernel/kcov.c:483, CPU#0: kworker/1:7/6286
Modules linked in:
CPU: 0 UID: 0 PID: 6286 Comm: kworker/1:7 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 f6 b0 55 00 48 89 df 5b 41 5e 41 5f e9 19 6e 5b 00 7c 1c 5b 41 5e 41 5f e9 3d b9 6b 09 cc 90 <0f> 0b 90 4c 89 f7 5b 41 5e 41 5f e9 4b 52 6a 09 48 89 df be 03 00
RSP: 0018:ffffc90003d17cc0 EFLAGS: 00010202
RAX: bda1879d85b88300 RBX: ffff8880299f2400 RCX: 0000000000000000
RDX: 00000000d492317c RSI: ffffffff8ba73e40 RDI: 00000000ffffffff
RBP: ffffc90003d17e18 R08: ffffffff8b2ee740 R09: ffffffff8dfc80c0
R10: dffffc0000000000 R11: fffffbfff1f178bf R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8880299f2408 R15: ffff888026db9ec0
FS:  0000000000000000(0000) GS:ffff8881260fe000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f44999128f0 CR3: 000000003988e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 do_exit+0x150/0x22c0 kernel/exit.c:908
 kthread+0x3a6/0x470 kernel/kthread.c:438
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>