------------[ cut here ]------------ kcov->t != t WARNING: kernel/kcov.c:483 at kcov_task_exit+0xf5/0x160 kernel/kcov.c:483, CPU#1: syz.7.4133/19696 Modules linked in: CPU: 1 UID: 0 PID: 19696 Comm: syz.7.4133 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 c6 4f 54 00 48 89 df 5b 41 5e 41 5f e9 e9 26 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 8b 00 60 09 48 89 df be 03 00 RSP: 0018:ffffc9000ea5fae0 EFLAGS: 00010287 RAX: 445b5863e6582400 RBX: ffff8880523b1d00 RCX: 0000000000000000 RDX: 00000000b9174e89 RSI: ffffffff8ba647e0 RDI: 00000000ffffffff RBP: ffffc9000ea5fc28 R08: ffffffff8b245250 R09: ffffffff8ddcd780 R10: dffffc0000000000 R11: fffffbfff1ed4657 R12: 1ffff110051681fd R13: 0000000000000009 R14: ffff8880523b1d08 R15: ffff888055341e40 FS: 00007f07e8eed6c0(0000) GS:ffff888126440000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb69b377dac CR3: 0000000042d4e000 CR4: 00000000003526f0 Call Trace: do_exit+0xd8/0x2320 kernel/exit.c:904 do_group_exit+0x21b/0x2d0 kernel/exit.c:1112 get_signal+0x125c/0x1310 kernel/signal.c:3034 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:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f07eacbc799 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:00007f07e8eed0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f07eaf36098 RCX: 00007f07eacbc799 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f07eaf36098 RBP: 00007f07eaf36090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f07eaf36128 R14: 00007ffea8e78d40 R15: 00007ffea8e78e28