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.0.24/5875
Modules linked in:
CPU: 1 UID: 0 PID: 5875 Comm: syz.0.24 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:kcov_task_exit+0xf5/0x160 kernel/kcov.c:483
Code: 10 00 00 48 8b bb 90 00 00 00 e8 46 b3 55 00 48 89 df 5b 41 5e 41 5f e9 39 70 5b 00 7c 1c 5b 41 5e 41 5f e9 bd 68 5c 09 cc 90 <0f> 0b 90 4c 89 f7 5b 41 5e 41 5f e9 eb 00 5b 09 48 89 df be 03 00
RSP: 0018:ffffc900059efae0 EFLAGS: 00010206
RAX: 1d945c5d85730a00 RBX: ffff88802c027200 RCX: 0000000000000000
RDX: 00000000e0899ed9 RSI: ffffffff8ba751c0 RDI: 00000000ffffffff
RBP: ffffc900059efc30 R08: ffffffff8b1f78e0 R09: ffffffff8dfc81c0
R10: dffffc0000000000 R11: fffffbfff1f11fbf R12: dffffc0000000000
R13: 0000000000000009 R14: ffff88802c027208 R15: ffff888027715c40
FS:  00007f2e1694d6c0(0000) GS:ffff888126273000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f07e4a8d000 CR3: 000000003ddfe000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 do_exit+0x150/0x22c0 kernel/exit.c:909
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1119
 get_signal+0x1284/0x1330 kernel/signal.c:3037
 arch_do_signal_or_restart+0xbc/0x840 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop+0x8c/0x4d0 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x33e/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2e1871ce59
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:00007f2e1694d0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f2e18996098 RCX: 00007f2e1871ce59
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2e18996098
RBP: 00007f2e18996090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2e18996128 R14: 00007ffd58cfbba0 R15: 00007ffd58cfbc88
 </TASK>