assert "kd_lookup(kd->kd_unit) == NULL" failed in kcov.c (4)

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
openbsd	assert "kd_lookup(kd->kd_unit) == NULL" failed in kcov.c (3)	-1	2	123d	154d	0/3	auto-obsoleted due to no activity on 2025/09/12 14:51
openbsd	assert "kd_lookup(kd->kd_unit) == NULL" failed in kcov.c	-1	2	352d	389d	0/3	auto-obsoleted due to no activity on 2025/01/26 12:26
openbsd	assert "kd_lookup(kd->kd_unit) == NULL" failed in kcov.c (2)	-1	1	245d	245d	0/3	auto-obsoleted due to no activity on 2025/05/13 16:49

panic: kernel diagnostic assertion "kd_lookup(kd->kd_unit) == NULL" failed: file "/syzkaller/managers/main/kernel/sys/dev/kcov.c", line 306
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*228323  54717      0           0  0x4000000    0  syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83350277) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff8338f698,ffffffff8339b747,132,ffffffff833f40b5) at __assert+0x29 sys/kern/subr_prf.c:-1
kcovopen(113d4,102,2000,ffff80003ca9c2c8) at kcovopen+0x14f kd_lookup sys/dev/kcov.c:478 [inline]
kcovopen(113d4,102,2000,ffff80003ca9c2c8) at kcovopen+0x14f sys/dev/kcov.c:306
spec_open_clone(ffff80003c949478) at spec_open_clone+0x277 sys/kern/spec_vnops.c:722
spec_open(ffff80003c949478) at spec_open+0x316 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd806bc76cf0,102,fffffd8007bfb7b8,ffff80003ca9c2c8) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138
vn_open(ffff80003c949620,102,0) at vn_open+0x6a0 sys/kern/vfs_vnops.c:177
sys_ktrace(ffff80003ca9c2c8,ffff80003c9497f0,ffff80003c949740) at sys_ktrace+0x9a sys/kern/kern_ktrace.c:551
syscall(ffff80003c9497f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c9497f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x666ab512d10, count: 4
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