panic: kernel diagnostic assertion "tname->un_flags & UNVEIL_USERSET" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_unveil.c", line 879 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *159832 71805 0 0 0x4000000 0 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:208 __assert(ffffffff81f459f9,ffffffff81ef283c,36f,ffffffff81f53e28) at __assert+0x2e sys/kern/subr_prf.c:155 unveil_check_final(ffff8000ffff4e20,ffff800014a1a818) at unveil_check_final+0x805 sys/kern/kern_unveil.c:879 namei(ffff800014a1a818) at namei+0x88a sys/kern/vfs_lookup.c:232 dosymlinkat(ffff8000ffff4e20,20000040,ffffff9c,20000100) at dosymlinkat+0xcd sys/kern/vfs_syscalls.c:1613 syscall(ffff800014a1aad0) at syscall+0x541 Xsyscall(6,0,fffffffffffffffd,0,2,773d4e3010) at Xsyscall+0x128 end of kernel end trace frame: 0x7971597df0, count: 7 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.