------------[ cut here ]------------ kcov->t != t WARNING: kernel/kcov.c:483 at kcov_task_exit+0xf5/0x160 kernel/kcov.c:483, CPU#0: syz.2.1660/11788 Modules linked in: CPU: 0 UID: 0 PID: 11788 Comm: syz.2.1660 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:kcov_task_exit+0xf5/0x160 kernel/kcov.c:483 Code: 10 00 00 48 8b bb 90 00 00 00 e8 e6 54 54 00 48 89 df 5b 41 5e 41 5f e9 09 2c 5a 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 cb f6 5f 09 48 89 df be 03 00 RSP: 0018:ffffc90003ac7d20 EFLAGS: 00010283 RAX: 9072acc3a0db9f00 RBX: ffff88803b9ecc00 RCX: 0000000000000000 RDX: 000000009c6ac396 RSI: ffffffff8ba64860 RDI: 00000000ffffffff RBP: ffffc90003ac7e78 R08: ffffffff8b2441d0 R09: ffffffff8ddcd780 R10: dffffc0000000000 R11: fffffbfff1ed4657 R12: 1ffff11005176f1d R13: 0000000000000000 R14: ffff88803b9ecc08 R15: ffff88803107db80 FS: 0000555567d79500(0000) GS:ffff888126340000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f80a6322490 CR3: 000000002a9c6000 CR4: 00000000003526f0 Call Trace: do_exit+0xd8/0x2320 kernel/exit.c:904 do_group_exit+0x21b/0x2d0 kernel/exit.c:1112 __do_sys_exit_group kernel/exit.c:1123 [inline] __se_sys_exit_group kernel/exit.c:1121 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1121 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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7b721fc799 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:00007ffe95e87668 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7b721fc799 RDX: 00007f7b71451000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffe95e876cc R08: 0000000000000000 R09: 00000000000927c0 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000003a R13: 00000000000927c0 R14: 00000000000a8c66 R15: 00007ffe95e87720