------------[ cut here ]------------ kcov->t != t WARNING: kernel/kcov.c:483 at kcov_task_exit+0xf5/0x160 kernel/kcov.c:483, CPU#1: syz.1.8542/1785 Modules linked in: CPU: 1 UID: 0 PID: 1785 Comm: syz.1.8542 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 36 68 55 00 48 89 df 5b 41 5e 41 5f e9 49 25 5b 00 7c 1c 5b 41 5e 41 5f e9 7d cb 69 09 cc 90 <0f> 0b 90 4c 89 f7 5b 41 5e 41 5f e9 9b 64 68 09 48 89 df be 03 00 RSP: 0018:ffffc90004267ae0 EFLAGS: 00010202 RAX: bf0f606344bbd800 RBX: ffff88801e282d00 RCX: 0000000000000000 RDX: 000000004f957620 RSI: ffffffff8ba73040 RDI: 00000000ffffffff RBP: ffffc90004267c28 R08: ffffffff8b2cf750 R09: ffffffff8dfc80c0 R10: dffffc0000000000 R11: fffffbfff1f1717f R12: dffffc0000000000 R13: 0000000000000000 R14: ffff88801e282d08 R15: ffff8880540fdc40 FS: 00007f43e7fae6c0(0000) GS:ffff888126209000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000010030 CR3: 00000000890b4000 CR4: 00000000003526f0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: do_exit+0x150/0x22c0 kernel/exit.c:908 do_group_exit+0x21b/0x2d0 kernel/exit.c:1117 get_signal+0x125c/0x1310 kernel/signal.c:3037 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline] exit_to_user_mode_loop+0x86/0x480 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:328 [inline] do_syscall_64+0x33e/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f43e9d5c819 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:00007f43e7fae0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f43e9fd5fa8 RCX: 00007f43e9d5c819 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f43e9fd5fa8 RBP: 00007f43e9fd5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f43e9fd6038 R14: 00007ffdfca72800 R15: 00007ffdfca728e8