syzbot

------------[ cut here ]------------
kcov->t != t
WARNING: kernel/kcov.c:475 at kcov_task_exit+0x181/0x240 kernel/kcov.c:475, CPU#1: syz.3.2998/13613
Modules linked in:
CPU: 1 UID: 0 PID: 13613 Comm: syz.3.2998 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:kcov_task_exit+0x181/0x240 kernel/kcov.c:475
Code: 90 00 00 00 e8 50 cb 57 00 4c 89 f7 5b 41 5e 41 5f e9 f3 8b 5d 00 7c 40 5b 41 5e 41 5f e9 87 4c 80 09 cc 90 0f 0b 90 eb 10 90 <0f> 0b 90 eb 0a 90 0f 0b 90 eb 04 90 0f 0b 90 4c 89 ff 5b 41 5e 41
RSP: 0018:ffffc90005957d20 EFLAGS: 00010287
RAX: fcc5cea4df21e100 RBX: ffff88805e018000 RCX: 0000000000000000
RDX: 00000000b8e13370 RSI: ffffffff8bca5f60 RDI: 00000000ffffffff
RBP: ffffc90005957e80 R08: ffffffff8b4419a0 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8e1c3000 R12: 0000000000000000
R13: ffff88805e018000 R14: ffff8880302bb100 R15: ffff8880302bb108
FS:  0000555582e0e500(0000) GS:ffff888125d49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000334030 CR3: 000000002b0ba000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 do_exit+0x159/0x2360 kernel/exit.c:937
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1147
 __do_sys_exit_group kernel/exit.c:1158 [inline]
 __se_sys_exit_group kernel/exit.c:1156 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1156
 x64_sys_call+0x221a/0x2240 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdddc19de59
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:00007ffc60c7a4f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdddc19de59
RDX: 0000001b32424000 RSI: 0000000000000018 RDI: 0000000000000000
RBP: 00007ffc60c7a55c R08: 0000000000000006 R09: 000000000000003b
R10: 00000000003f9760 R11: 0000000000000246 R12: 000000000000011f
R13: 000000000000003b R14: 00000000000894f2 R15: 00007ffc60c7a5b0
 </TASK>