syzbot

------------[ cut here ]------------
kcov->t != t
WARNING: kernel/kcov.c:483 at kcov_task_exit+0xf5/0x160 kernel/kcov.c:483, CPU#1: syz-executor/14894
Modules linked in:
CPU: 1 UID: 0 PID: 14894 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:kcov_task_exit+0xf5/0x160 kernel/kcov.c:483
Code: 10 00 00 48 8b bb 90 00 00 00 e8 96 c8 57 00 48 89 df 5b 41 5e 41 5f e9 39 91 5d 00 7c 1c 5b 41 5e 41 5f c3 cc cc cc cc cc 90 <0f> 0b 90 4c 89 f7 5b 41 5e 41 5f e9 1b 90 5e 09 48 89 df be 03 00
RSP: 0018:ffffc9001250fae0 EFLAGS: 00010206
RAX: c8d14d67dd970200 RBX: ffff8880226ecb00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8ba7f080 RDI: 00000000ffffffff
RBP: ffffc9001250fc30 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f1375f R12: 0000000000000009
R13: 0000000000000004 R14: ffff8880226ecb08 R15: ffff88802fe39f00
FS:  00005555625d1500(0000) GS:ffff888126244000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f443c026658 CR3: 0000000086ef4000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 do_exit+0x159/0x2360 kernel/exit.c:937
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1147
 get_signal+0x121b/0x12c0 kernel/signal.c:3038
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x104/0x730 kernel/entry/common.c:101
 __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:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f50ef5dd68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffeec99e078 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: fffffffffffffe00 RBX: 00005555625d1500 RCX: 00007f50ef5dd68e
RDX: 0000000000000030 RSI: 00007ffeec99e170 RDI: 00000000000000f9
RBP: 00007ffeec99e11c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000258
R13: 00000000000927c0 R14: 000000000011178f R15: 00007ffeec99e170
 </TASK>